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1,553 media by topic ∙ page 1 of 16
[Italian thermoscope and Dutch thermometer]

[Italian thermoscope and Dutch thermometer]

Illus. in: Mathematical recreations, .... [London] : Printed for W. Leake, 1653. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. : Library o... More

[Page of text with illustration of a "thermoscope" or thermometer without scale]

[Page of text with illustration of a "thermoscope" or thermometer with...

Illus. in: Sphlaera mvndi, .... Mvtinæ : Ex typographia Andreæ, & Hieronymi Cassiani, 1653. Published in: The tradition of technology : Landmarks of Western technology ... / Leonard C. Bruno. Washington, D.C. ... More

Watch with a portrait of Nicholas I, czar of Russia (r. 1825–55)

Watch with a portrait of Nicholas I, czar of Russia (r. 1825–55)

A gold and enameled pocket watch with a portrait of a man in uniform, Russia, free to use, no copyright restrictions image - Picryl description

Watch with a portrait of Nicholas I, czar of Russia (r. 1825–55)

Watch with a portrait of Nicholas I, czar of Russia (r. 1825–55)

Watchmaker: Firm of Perret & Cie (ca. 1840–1850) Public domain photograph of antique watch, free to use, no copyright restrictions image - Picryl description

[Examples of Florentine thermometers and a hygrometer]

[Examples of Florentine thermometers and a hygrometer]

Illus. in: Saggi di naturali esperienze / fatte nell'Accademia .... In Firenze : Per Giuseppe Cocchini all'Insegna della Stella, 1666 [i.e. 1667]. Published in: The tradition of technology : Landmarks of Weste... More

Watch with a portrait of Alexander II, czar of Russia (r. 1855–81)

Watch with a portrait of Alexander II, czar of Russia (r. 1855–81)

An early 20th century silver plated portrait of a british officer, Russia, free to use, no copyright restrictions image - Picryl description

Watch with a portrait of Alexander II, czar of Russia (r. 1855–81)

Watch with a portrait of Alexander II, czar of Russia (r. 1855–81)

Watchmaker: H. Maret Public domain photograph of antique watch, free to use, no copyright restrictions image - Picryl description

Atlantic Ocean. Meridional temperature section. Falkland Islands to the parallel of 35.40'.S. / engraved by Malby & Sons.

Atlantic Ocean. Meridional temperature section. Falkland Islands to th...

Vertical scale of fathoms and horizontal scale of degrees of latitude. Illus. in: Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-1876 ..., narrative, vol. 1, second pa... More

[Man on ship comparing temperature of the surface of the sea and the air in various parts of the world] / E. Gulland ; Pearson, sc.

[Man on ship comparing temperature of the surface of the sea and the a...

Illus. in: Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-1876 ..., narrative, vol. 1, second part. Longmans & Co. ..., 1885, diagram 22, p. 1003. Reference copy also... More

[Illustration demonstrating that the efficiency of a power cycle depends on the temperature in an engine]

[Illustration demonstrating that the efficiency of a power cycle depen...

Illus. in: Reflections on the motive power of heat and on machines fitted to develop that power. New York : J. Wiley & sons, 1890. Published in: The tradition of technology : Landmarks of Western technology ..... More

Chart, 1901 - Public domain document scan

Chart, 1901 - Public domain document scan

Chart, 1901 - Public domain document scan

Chart, 1901 - Public domain document scan

Bureau of Mines, low temperature laboratories

Bureau of Mines, low temperature laboratories

Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description

U.S. Weather Bureau meteorograph obtains records of wind velocity, temperature, humidity, pressure

U.S. Weather Bureau meteorograph obtains records of wind velocity, tem...

Public domain photograph of industrial building, factory, free to use, no copyright restrictions image - Picryl description

Knife River Indian Villages - Wild Weather Coloring Page

Knife River Indian Villages - Wild Weather Coloring Page

A coloring page about the extreme weathers on the plains with sun, rain, snow, and leaves falling on an eagle, bison, and mouse.

Airplanes - Instruments - Manufacturing altimeters for the aviation section at the plant of the Taylor Instrument Companies, Rochester, N.Y. Heat compensating cabinet for Tycos Altimeters. Temperature is raised from room temperature to 40 degrees Centigrade. Air is kept in circulation with electric fans at each end and temperature is checked with standard thermometers, throughout the cabinet. Rec'd from Taylor Instrument Companies

Airplanes - Instruments - Manufacturing altimeters for the aviation se...

Photographer: Rec'd from Taylor Instrument Companies Airplanes - Instruments Public domain photograph of industrial design, equipment, free to use, no copyright restrictions image - Picryl description

Airplanes - Instruments - Manufacturing altimeters for the aviation section at the plant of the Taylor Instrument Companies, Rochester, N.Y. Heat compensating cabinet for Tycos Altimeters. Temperature is lowered from room temperature to 10 degrees below ero centigrade. Rec'd from Taylor Instrument Companies

Airplanes - Instruments - Manufacturing altimeters for the aviation se...

Photographer: Rec'd from Taylor Instrument Companies Airplanes - Instruments Public domain photograph related to the United States in World War One, free to use, no copyright restrictions image - Picryl description

Although the temperature was below the freezing [...] the President and Mrs. Coolidge were up early to view the eclipse of the sun from the lawn of the White House. They used a blackened window pane, while the First Lady of t[...] had a developed photographed plate furnished by one of [...] photographers

Although the temperature was below the freezing [...] the President an...

A black and white photo of two people and a bird. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Oh Gosh! Temperature made to order for our homes; factory operated farms; letters sent and received by radio; aircraft guided through fog and darkness by an invisible radio wave; and motion pictures by radio in our homes. These are among the wonders of science of tomorrow as foreshadowed by Henry D. Hubbard, secretary of the United States Bureau of Standards

Oh Gosh! Temperature made to order for our homes; factory operated far...

A black and white photo of a man sitting at a desk. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Washington man sleeps in a blanketless bed. Milton Fairchild of Washington, D.C., does not need any blankets for keeping him warm these winter nights.He has invented an electrical bed which does not require any covering for the body when asleep. Furthermore, according to Mr Fairchild, an "electric blanket" is healthier and one is not so susceptible to colds. The temperature is maintained constant throughout the night by automatic controls

Washington man sleeps in a blanketless bed. Milton Fairchild of Washin...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington. Room temperature reduced 10 degrees display I

Electric Institute of Washington. Room temperature reduced 10 degrees ...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington. Room temperature reduced 10 degrees display II

Electric Institute of Washington. Room temperature reduced 10 degrees ...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Electric Institute of Washington. Room temperature reduced 10 degrees display III

Electric Institute of Washington. Room temperature reduced 10 degrees ...

Public domain photograph of commerce and advertising, 1920s-1930s America, free to use, no copyright restrictions image - Picryl description

Government scientist cools water to -6ʺ without freezing it. Washington, D.C., Aug. 9. The belief that water freezes at 32 degrees fahrenheit has been blasted by Dr. N. Ernest Dorsey, scientist of the National Bureau of Standards. Neither does all water freeze at the same temperature. These discoveries have been made by Dr. Dorsey after experimenting with 37 specimens of water taken from lakes, canals, and other sources. He has cooled water until it was minus 6 degrees fahrenheit that is, 38 degrees colder that the so called freezing point of 32 degrees. Yet it remained liquid, 8/9/38

Government scientist cools water to -6ʺ without freezing it. Washingto...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Scotch machine, Washington, D.C., September 8. This machine, exhibited at the World Power Conference which is being held here, is devised so as to use every inch of matter contained in coal. The coal is put in the rettort and heated to a temperature of 1832 degrees. From the smoke and gas, Tar, Ammonium Sulphite, sulphur, light oils and gas are derived and from the tar, medicines, aromatic oils, perfumes, dyes, and acids are derived. From the light oils, motor fuel is obtained. In short: this machine wastes nothing at all

Scotch machine, Washington, D.C., September 8. This machine, exhibited...

Public domain photograph of Washington DC, free to use, no copyright restrictions image - Picryl description

Scotch machine, Washington, D.C., September 8. This machine, exhibited at the World Power Conference which is being held here, is devised so as to use every inch of matter contained in coal. The coal is put in the retort and heated to a temperature of 1832 degrees. From the smoke and gas, Tar, Ammonium Sulphite, sulphur, light oils and gas are derived and from the tar, medicines, aromatic oils, perfumes, dyes, and acids are derived. From the light oils, motor fuel is obtained. In short: this machine wastes nothing at all

Scotch machine, Washington, D.C., September 8. This machine, exhibited...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Corn, dried up and lying in the field. The temperature was over one hundred degrees. Between Dallas and Waco, Texas

Corn, dried up and lying in the field. The temperature was over one hu...

Public domain photograph - historical image of Texas, United States, free to use, no copyright restrictions image - Picryl description

Photograph of an Indicator Board for Regulating Temperature

Photograph of an Indicator Board for Regulating Temperature

Historic Photograph File of National Archives Events and Personnel Public domain photograph related to history of the US National Archives, free to use, no copyright restrictions image - Picryl description

Photograph of an Indicator Board for Regulating Temperature

Photograph of an Indicator Board for Regulating Temperature

Historic Photograph File of National Archives Events and Personnel Public domain photograph related to history of the US National Archives, free to use, no copyright restrictions image - Picryl description

#4--Miss Ann Turner, getting the proper temperature for milk

#4--Miss Ann Turner, getting the proper temperature for milk

A woman is opening a refrigerator with milk in it. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

New radio meteorograph developed for the U.S. Navy. Washington, D.C., June 9. The National Bureau of Standards has recently developed for the U.S. Navy Meteorological Service a new radio meteorograph. The new instrument (shown in the picture) is sent up on a 5-Foot balloon and is expected to replace the use of airplanes in upper-air meteorological surroundings. E.G. Lapham, Associate Physicist of the bureau, is shown assembling the new meteorograph in preperation for an ascent. The device transmits audio notes which are a function of temperature and humidity. These notes are interrupted at approximately each 10-millibar increment in pressure, thus identifying each temperature and humidity indication with its respective increment of altitude, 6937

New radio meteorograph developed for the U.S. Navy. Washington, D.C., ...

A man standing in front of a table with a mirror, Library of Congress Harris and Ewing collection Title from unverified caption data received with the Harris & Ewing Collection. Gift; Harris & Ewing, Inc. 1955... More

Flame propogation in gas engines photographed. Washington, D.C., Aug. 26. A study of the mechanism of the flame propogation in the cylinder of a internal combustion engine is being made at the U.S. Bureau of Standards for the National Advisory Committee for Aeronautics. A secial bomb made of steel, shown in the foreground, and designed to withstand pressures up to 500 lbs. to the square inch is used to show the progress of the flame and the rise in pressure which may be recorded photographically during the gas explosions under carefully controlled conditions. The camera, where the recordings are made, is in front of Dr. Ernest F. Flock of the Bureau of Standards, carries its film on a drum which may be revolved up to 4,000 revolutions per minute, this camera also records a neon light flashing at a thousandth of a second. The independent effects of pressure, temperature and charge composition upon flame speed and explosion ratio may be made with this equipment, 8/26/37

Flame propogation in gas engines photographed. Washington, D.C., Aug. ...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Correct way to bake turkey. An important step: this placing of the bird in the pan. It must be placed breast side down on a rack in an open, dry roaster. It is baked at an even temperature of between 300 and 350 degrees

Correct way to bake turkey. An important step: this placing of the bir...

Picryl description: Public domain photograph of chicken, poultry, agriculture, farm animals, free to use, no copyright restrictions.

Mécanisme pour la contrôle de la température et de l'humidité atmosphérique de la salle des livres rares

Mécanisme pour la contrôle de la température et de l'humidité atmosphé...

Lantern slide showing climate control machinery for the rare book room at the Library of Congress. Slide was probably used in a lecture to accompany an exhibit prepared for the Exposition Internationale des Art... More

New radio meteorograph developed for the U.S. Navy. Washington, D.C., June 9. The National Bureau of Standards has recently developed for the U.S. Navy Meteorological Service a new radio meteorograph. The new instrument (shown in the picture) is sent up on a 5-Foot balloon and is expected to replace the use of airplanes in upper-air meteorological surroundings. E.G. Lapham, Associate Physicist of the bureau, is shown assembling the new meteorograph in preperation for an ascent. The device transmits audio notes which are a function of temperature and humidity. These notes are interrupted at approximately each 10-millibar increment in pressure, thus identifying each temperature and humidity indication with its respective increment of altitude, 6/9/37

New radio meteorograph developed for the U.S. Navy. Washington, D.C., ...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientists of the National Bureau of Standards today conducted a test of the new radiometeorograph, a device attached to parachute and balloon and sent into the skies to radio back signals giving the pressure, temperature and humidity of the upper air. Preparing the balloon for the ascension are Dr. L.V. Astin, (left) of the Bureau's Electrical Division, and Dr. L.F. Curtiss, head of the Radium Division. The balloon carries the instrument as high as 50,000 or 60,000 feet. 9 to 11 miles high. Today's test was conducted for the U.S. Weather Bureau. 9/13/37

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientis...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Hams. Placing the ham in the incubator, Mr. Carroll sets the heat at the required temperature for the aging

Hams. Placing the ham in the incubator, Mr. Carroll sets the heat at t...

Picryl description: Public domain photograph of chicken, poultry, agriculture, farm animals, free to use, no copyright restrictions.

Government experts discover "perpetual" electrical current. Washington, D.C., March 10. Dr. F.B. Silsbee (left) and Dr. F.G. Brickwedge, of the Bureau of Standards, have just concluded experiments which have proved that an electric current, cut off from its original source, will flow eternally round and round a coiled tin wire circuit when the wire is subjected to 450-degree-below-zero temperature. The tests were made in a new effort to understand what electricity really is, 3/10/38

Government experts discover "perpetual" electrical current. Washington...

Public domain photograph of laboratory, scientist, free to use, no copyright restrictions image - Picryl description

Air conditioned hen house is latest. Washington, D.C., Aug. 9. Biddy increases the production of eggs in an air-conditioned hen house, U.S. Department of Agriculture experts have discovered after extensive experiments. The first temperature controlled maternity ward for hens has just been put into operation at the governmental experimental farm here. The hens have voiced their approval by laying more frequently; also a more uniform egg. R.B. Nestler poultry expert, is pictured as he removes the eggs from the automatic chute in the new room. Note the air conditioning apparatus on the ceiling, 8/9/38

Air conditioned hen house is latest. Washington, D.C., Aug. 9. Biddy i...

Public domain photograph of Washington DC, 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Sweeping hot coals from outdoor earthen oven after it has been heated to proper temperature to bake bread, Taos County, New Mexico

Sweeping hot coals from outdoor earthen oven after it has been heated ...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

White-hot steel pours like water from a 35-ton electric furnace, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pennsylvania The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive. "The furnace is tilted for the pouring." The flying sparks indicate the fluidity of the steel

White-hot steel pours like water from a 35-ton electric furnace, Alleg...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. Cheese factory. Int[erior]. Cheese mixture submitted to high steam temperature (closed apparatus)

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Show window of finished work

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Fatherless migratory family camped behind gas station. The mother is trying to support three boys by picking pears. Just arrived from Minnesota, she used to work in a restaurant there. Oldest boy, age ten, helped carry ladder from tree to tree Photograph made at end of day (temperature 106 degrees) when she returned from orchard. Yakima Valley, Washington

Fatherless migratory family camped behind gas station. The mother is t...

Public domain photograph - United States during 1930s Great Depression, free to use, no copyright restrictions image - Picryl description

Owens-Corning Fiberglas Corp., Toledo, Ohio. Intense heat is needed to melt the inorganic ingredients of the batch from which Fiberglas insulation wool is manufactured. Twenty-four hours a day, seven days a week, this gas-fired furnace maintains the temperature required in the process

Owens-Corning Fiberglas Corp., Toledo, Ohio. Intense heat is needed to...

Picryl description: Public domain image of a historical building, landmark architecture, world heritage, free to use, no copyright restrictions.

A woman in a black dress is holding a stick, Great Depression. FSA/OWI Photograph

A woman in a black dress is holding a stick, Great Depression. FSA/OWI...

Picryl description: Public domain image of industrial or agricultural worker, 1930s, 20th-century, free to use, no copyright restrictions. show less

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. Cheese factory. Int[erior]. Cheese mixture submitted to high steam temperature (open apparatus)

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Determining temperature of earthen oven in which bread will be baked by seeing how fast straw will be burned, Taos County, New Mexico

Determining temperature of earthen oven in which bread will be baked b...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Coming out of tobacco barn in which tobacco is being cured. Careful check of temperature must be made. Granville County, North Carolina

Coming out of tobacco barn in which tobacco is being cured. Careful ch...

Public domain photograph - historical image of North Carolina, United States, free to use, no copyright restrictions image - Picryl description

Spanish-American woman testing temperature of earthen oven by determining length of time required to scorch wool, Taos County, New Mexico

Spanish-American woman testing temperature of earthen oven by determin...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Flash-cooking process used in preparing grapefruit juice for canning. Temperature is carried to 180 degrees, and is attained in a few seconds, thus retaining much of the original flavor. Weslaco, Texas

Flash-cooking process used in preparing grapefruit juice for canning. ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Weighing box of turkeys to be loaded into freight car at cold storage plant. Brownwood, Texas. Sheepskin coat is necessary because of low temperature in cold storage plant

Weighing box of turkeys to be loaded into freight car at cold storage ...

Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description

Migratory boy, aged eleven, and his grandmother work side by side picking hops. Started work at five a.m. Photograph made at noon. Temperature 105 degrees. Oregon, Polk County, near Independence. See general caption number 45

Migratory boy, aged eleven, and his grandmother work side by side pick...

Picryl description: Public domain image of a farmer, 1930s, 20th-century dust bowl era, free to use, no copyright restrictions.

[Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Painting with metal colours]

[Jewish factories in Palestine on Plain of Sharon & along the coast to...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Rishon le Zion. The brewery. Low temperature aluminum containers

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Painting with metal colours

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Painting with metal colours

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Spanish-American woman testing temperature of earthen oven by determining length of time required to scorch wool, Taos County, New Mexico

Spanish-American woman testing temperature of earthen oven by determin...

Public domain photograph - New Mexico, United States, free to use, no copyright restrictions image - Picryl description

Jewish factories in Palestine on Plain of Sharon & along the coast to Haifa. Tel Aviv. A. Barbash's high temperature painting on china ware. Exhibit of finished work

Jewish factories in Palestine on Plain of Sharon & along the coast to ...

Public domain photograph, 1930s-1940s Jerusalem, Palestine, History of Israel, free to use, no copyright restrictions image - Picryl description

Young migrant worker brings his hops to weigh scales. From five a.m. until noon, when photograph was made, he had picked eighty pounds, which equals eighty cents. Temperature 105 degrees. Oregon, Polk County, near Independence

Young migrant worker brings his hops to weigh scales. From five a.m. u...

Picryl description: Public domain image of a farm, farmer, agriculture, early 20th century, free to use, no copyright restrictions.

Potato storage barn on a field near Caribou, Maine. The earth is built up around the sides to provide a more even temperature throughout the year

Potato storage barn on a field near Caribou, Maine. The earth is built...

Public domain photograph of life in the United States in the 1930s, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Converting scrap iron and steel into high quality alloy steel. A workman adds alloying materials to the bath of molten steel in one of the thirty-five ton electric arc furnaces. These furnaces give faster heating and more accurate temperature control than do open hearth furnaces

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. The rapid tempo of expansion necessary to meet the ever-mounting needs of the national defense production program. In the left foreground a newly completed electric melting furnace is already in operation as a construction crew puts the finishing touches on the furnaces beyond it. In the background additional plant structure is still being built. Electric melting furnaces provide faster melting of the steel bath and more precise control of temperature which is necessary in the processing of high quality alloy steels

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Converting scrap iron and steel into high quality alloy steel. A workman adds alloying materials to the bath of molten steel in one of the thirty-five ton electric arc furnaces. These furnaces give faster heating and more accurate temperature control than do open hearth furnaces

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water from a thirty-five ton electric furnace. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water ...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

Potato storage barn showing earth built up around the sides. Such construction helps maintain a more even temperature the year round. Near Caribou, Maine

Potato storage barn showing earth built up around the sides. Such cons...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. A heated ingot of steel is removed from the soaking pit. In this pit ingots are thoroughly heated to the extremely high temperature required for conversion into slabs, billets or sheet bars for further conversion

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. A heated ingot of steel is removed from the soaking pit. In this pit ingots are thoroughly heated to the extremely high temperature required for conversion into slabs, billets or sheet bars for further conversion

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Thirty-five ton electric arc melting furnace in operation. These furnaces convert scrap iron and steel into high quality steel alloys. This type of furnace gives much faster heating and permits the accurate temperature control so necessary in the processing of the high quality steels. The alloying elements are being added to the bath of molten steel

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. A heated ingot of steel is removed from the soaking pit. In this pit ingots are thoroughly heated to the extremely high temperature required for conversion into slabs, billets or sheet bars for further conversion

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Potato storage barn on a field near Caribou, Maine. The earth is built up around the sides to provide a more even temperature throughout the year

Potato storage barn on a field near Caribou, Maine. The earth is built...

Picryl description: Public domain image of a rural countryside landscape, farmhouse, farm field, pasture free to use, no copyright restrictions.

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Thirty-five ton electric arc melting furnace in operation. These furnaces convert scrap iron and steel into high quality steel alloys. This type of furnace gives much faster heating and permits the accurate temperature control so necessary in the processing of the high quality steels. The alloying elements are being added to the bath of molten steel

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water from a thirty-five ton electric furnace. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive. The furnace is tiled for the pourings. The flying sparks indicate the fluidity of the steel

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water from a thirty-five ton electric furnace. The finest quality steels and alloys are produced in these furnaces, which allow much greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising steadily, even though this process is the most expensive. The furnace is tiled for the pourings. The flying sparks indicate the fluidity of the steel

Steel manufacture, Allegheny-Ludlum. White-hot steel pours like water ...

Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Potato storage barn on a field near Caribou, Maine. The earth is built up around the sides to provide a more even temperature throughout the year

Potato storage barn on a field near Caribou, Maine. The earth is built...

Public domain photograph of life in the United States in the 1930s, free to use, no copyright restrictions image - Picryl description

Taking a temperature reading in the foundry at the Farrell-Birmingham Corporation. Ansonia, Connecticut

Taking a temperature reading in the foundry at the Farrell-Birmingham ...

Public domain photograph of Connecticut in 1930s, free to use, no copyright restrictions image - Picryl description

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenridge, Pennsylvania. Thirty-five ton electric arc melting furnace in operation. These furnaces convert scrap iron and steel into high quality steel alloys. This type of furnace gives much faster heating and permits the accurate temperature control so necessary in the processing of the high quality steels. The alloying elements are being added to the bath of molten steel

Steel alloy manufacture. Allegheny Ludlum Steel Corporation, Brackenri...

Public domain photograph of building construction site, free to use, no copyright restrictions image - Picryl description

Photograph of Sig Olson Testing the Temperature of the Water

Photograph of Sig Olson Testing the Temperature of the Water

Original caption: Sig Olson is shown testing the temperature of the water in the cans of small mouth bass fingerlings and finds that it is the same as that of the lake water. Planting small mouth bass fingerlin... More

Rubber reclamation. Reclaiming rubber from scrap tires. An attendant at a large Midwest xylos process plant checks temperature on a continuous belt dryer which removes every trace of water. Recovery of rubber from old casings is based on dissolving and washing away all tire fibers and processing the resultant rubber material. Firestone

Rubber reclamation. Reclaiming rubber from scrap tires. An attendant a...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Checking temperature of milk being pasteurized. Antigo, Wisconsin

Checking temperature of milk being pasteurized. Antigo, Wisconsin

Picryl description: Public domain image of a factory worker, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions. show less

Closing the cover of the mold. Entirely automatic, the "watch-case" mold is closed by pushing a button, which starts several operations. First the airbag is filled with live steam which circulates during the entire process; next an automatic timer sets itself for the proper length of time and temperature; next pressure is exerted to squeeze the tire into the mold pattern. Firestone (General) Tires, Akron, Ohio

Closing the cover of the mold. Entirely automatic, the "watch-case" mo...

Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description

Rubber in storage. Number one U.S. stockpile. Crude rubber stored at points throughout the country is ample for all the needs of our armed forces. Boxes and bales weighing 250 pounds are stored in heating and thawing rooms to bring them to the proper temperature for processing

Rubber in storage. Number one U.S. stockpile. Crude rubber stored at p...

Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.

Thermostat recording temperature in the pasteurizing unit at the Burlington cooperative milk bottling plant. Burlington, Vermont

Thermostat recording temperature in the pasteurizing unit at the Burli...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Rubber in storage. Preferred stock. It's crude rubber -- and there's more in many warehouses throughout the country to meet our war needs. The 250-pound bales, wrapped in burlap or packed in boxes, are stored in heating and thawing rooms until they attain the proper temperature for processing

Rubber in storage. Preferred stock. It's crude rubber -- and there's m...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Workmen checking the temperature of magnesium alloy and "salting" the mixture (i.e., adding chemical necessary to the particular alloy combination at hand) before pouring it into the moulds. Ford River Rouge Foundry

Workmen checking the temperature of magnesium alloy and "salting" the ...

Public domain photograph of the United States military and military-industrial complex before World War Two, 1930s, free to use, no copyright restrictions image - Picryl description

Tracks for scout cars and other Army vehicles go through a curing process in an Ohio tire plant. The hydraulic press in which this important operation is performed assures uniform cure under automatically regulated temperature. Goodrich, Akron, Ohio

Tracks for scout cars and other Army vehicles go through a curing proc...

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Ingots of "strong alloy" aluminum go through a rolling mill at a temperature of 800 degrees Fahrenheit

Aluminum. Reynolds Metal Company, Louisville, Kentucky. Ingots of "str...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 20th century, free to use, no copyright restrictions.

Fence on Cruzen Ranch. Valley County, Idaho. AAA (Agricultural Adjustment Administration) has painted out this fence as being an outstanding type for ranch use. It keeps out predators (wolves, etc.), the wire is stapled loosely to allow for expansion and contraction caused by temperature changes

Fence on Cruzen Ranch. Valley County, Idaho. AAA (Agricultural Adjustm...

Public domain photograph of United States agriculture in the 1930s, country, farmer, farm, great depression, migration, dust bowl refugees, free to use, no copyright restrictions image - Picryl description

Molten metal from blast furnaces arrives at the open hearth foundry where it is placed in a 600 ton mixing furnace, which maintains a temperature of 2100 degrees fahrenheit. The mixing furnace acts as a sort of thermos bottle, or ore storage tank. A worker is shown here preparing an open hearth furnace for charging

Molten metal from blast furnaces arrives at the open hearth foundry wh...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Daily temperature readings are seen on Venetian Causeway between Miami and Miami Beach, Florida

Daily temperature readings are seen on Venetian Causeway between Miami...

Public domain photograph - historical image of Florida, United States, free to use, no copyright restrictions image - Picryl description

Putting tire into curing mold. From the vacuum expander, the potential new truck tire is taken to this "watch-case" curing mold in which it is baked under high heat and pressure for a long time. The exact time and temperature varies with the type and size of tire. The airbag inside the carcass is filled with live steam during this process so that heat is added from both inside and out. The mold contains the tread pattern, or design, as well as all markings which will appear on sidewall. Under this heat and pressure the rubber turns semi-liquid, and flows into every crevice, completely bonding the rubber processed fabric carcass to the cushion, the cushion to the tread. After this operation it is now one unit--a complete tire. Firestone (General) Tires, Akron, Ohio

Putting tire into curing mold. From the vacuum expander, the potential...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Great Falls, Montana. Anaconda Wire and Cable Company. Wire bars are placed on a conveyor which pushes them gradually into the heating furnace where they are brought up to correct temperature for rolling into rods

Great Falls, Montana. Anaconda Wire and Cable Company. Wire bars are p...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Science and research. Studies of non-coking coals. Research workers at the Golden, Colorado field station of the U.S. Bureau of Mines at a fifty-pound coke oven, which is used to determine if an unknown coal has coking properties. Coal is tested at various temperature levels to determine its adaptability to coking. Left to right: Ralph Maugham, labor foreman; William Landers, assistant chemical engineer; V.F. Parry, supervising engineer. Mr. Landers is shown using an instrument which measures temperature by the color of the heated mass. The bureau is carrying on a project to determine the suitability of western coal for coke operations with the view to supplying war needs of the expanding iron and steel industry of the Western states

Science and research. Studies of non-coking coals. Research workers at...

Picryl description: Public domain image of people, meeting, eating, drinking, food, beverage, 1930s, free to use, no copyright restrictions.

Aluminum casting. One of the many operations essential to production of aluminum articles for the Army and Air Forces: lowering basket into quench tank from high temperature heat treating solution furnace. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. One of the many operations essential to production o...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Production. Milling machines and machine castings. Precision gears are essential for machine tools to ensure accurate, smooth, quiet operations and long life. This gear grinder -- itself a machine tool -- is perfecting the working surfaces between the teeth of a milling machine gear. The milky liquid is coolant used to control the temperature at the grinding point so that the delicate physical character of the metal, produced by predetermined and careful heat treating, will not be disturbed. Location: a large Midwest machine tool plant

Production. Milling machines and machine castings. Precision gears are...

Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.

Conversion. Copper and brass processing. A mechanical feeder is here shown running billets of brass into an electric furnace, where they will be heated at a high temperature. Then the heated billets will be pushed with tremendous force through the die of an extrusion machine to form rods, tubes, angles or other shapes. Chase Brass and Copper Company, Euclid, Ohio

Conversion. Copper and brass processing. A mechanical feeder is here s...

Picryl description: Public domain photograph of lumber, lumberjack workers, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Aluminum casting. Shelf after shelf of aluminum castings on their way to the heat treating oven for low temperature precipitation treatment. These castings are for aluminum piston heads. Aluminum Industries Inc., Cincinnati, Ohio

Aluminum casting. Shelf after shelf of aluminum castings on their way ...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Production. Veneer for aircraft and other war essentials. Veneer for combat planes. In the "half-round method," a half log, after being heated in water to the proper temperature, is bolted on a stay log and revolved against a stationary knife. The sheets, as they fall from the knife, are stacked in proper sequence just as they were in the log. Louisville, Kentucky

Production. Veneer for aircraft and other war essentials. Veneer for c...

Picryl description: Public domain photograph of lumber, lumberjack workers, 1930s, Great Depression, economic conditions, free to use, no copyright restrictions.

Synthetic rubber (Ameripol). These control instruments in the Akron, Ohio, synthetic rubber plant of the B.F. Goodrich Company, maintain the proper temperature and pressure in the polymerizer tanks where raw material monomers are changed into polymers

Synthetic rubber (Ameripol). These control instruments in the Akron, O...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Cardinal "don't" for housekeepers: don't put hot food into the refrigerator. Allow cooked foods to cool to room temperature before placing in the refrigerator

Cardinal "don't" for housekeepers: don't put hot food into the refrige...

Public domain photograph of kitchen, free to use, no copyright restrictions image - Picryl description

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