The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and (20618369130)

Title: The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;
Identifier: CUbiodiversity628875-9365 (find matches)
Year: 1914 (1910s)
Authors: Lowther, Granville, ed; Worthington, William, 1871-
Subjects: Gardening; Fruit-culture; Vegetable gardening
Publisher: North Yakima, Wash. , The Encyclopedia of Horticulture Corporation
Contributing Library: Cornell University Library
Digitizing Sponsor: Mann Library, Cornell

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SPRAYS AND OTHER MEANS OF CONTROL 1899 withstand 200 lbs. pressure, is not prac- tical to use, as it is too cumbersome, being entirely too heavy for the operator to drag around. Three-eighths-inch high- pressure hose costs almost as much as half-inch hose of similar quality, yet it does not have sufficient capacity to supply a cluster of large nozzles without greatly reducing the nozzle-pressure of the spray solution. The hose connections for this size of hose have much smaller openings than the half-inch connections, which partially accounts for the reduction of pressure at the nozzle cap. The lead of hose to the operator on the ground should be at least thirty-five feet long, but the lead to the tower can be as short as twelve feet without hampering the op- erator in handling the spray rod. Barrel pumps or large hand pumps will seldom successfully supply more than one lead of hose at a satisfactory working pres- sure; but two nozzles can be used on the spray rod, when one nozzle does not utilize more than half of the capacity of the pump. Fig. 17 (12), (13), (14) and (15) shows a number of the various styles of hose connections; the double-length kinds, permitting the use of two hose bands, are the only ones which should be used. A connection having a hexagonal nut of the form shown in (14) is supe- rior to the round, coupling type (13). The flange or a corresponding section of the male hose connection should be hex- agonal, as in (15), so that an ordinary wrench can be used to turn it, and when the connection at the base of the exten- sion rod has one-fourth-inch pipe-thread, as in (15) and Fig. 18 (16), the reducer of the type shown in (17) is not needed. The Sherman hose-band, shown in (18), is much superior to a wire or narrow galvanized iron band, and is the kind that is amost universally used. "Never-slip" clamps, like those shown in (19), are so built that the hose cannot be pulled off of the connection by pressure. The hooks on the clamp extend over the flange on the connection and supplement the clamp on the hose in preventing it from slip- ping off of the connection. For power sprayers this style of clamp and con-
Text Appearing After Image:
Fig. 18. (16) A one-fourth pipe-thread male hose connection with a hexagonal section and held by a single Sherman hose-band. This connection is long enough to permit the use of two hose-bands. (17) A reducer which be- comes unnecessary when a one-fourth thread- ed connection is used instead of a standard male hose connection. (18) A Sherman hose- band. (19) A Never Slip hose-clamp and a double-length connection in position, The hex- agonal nut is superior to the round kind often furnished. nection is superior to any other kind, as it is impossible to blow the hose off of the connection by high pressure. Kod Cut-Offs The one-fourth-inch cut-offs, used at the base of the spray rods, must have sufficiently large openings so that the flow

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