. Destructive insects. Insect pests. — 42 — made of strong'sheet iron, and holds about five gallons of wash. It will, when properly charged with air and fluid, throw a continuous spray from ten to fifteen minutes without operating the handle. It is best to charge with air first and then with fluid. A gauge shows the quantity. About fifty pounds pressure per square inch of air, the balance fluid, and kept at one hundred pounds pressure, will do good work. The cylinders in the Bean spray pump are enameled inside. This will withstand the action of the acids or alkali in the solution; and the valv
. Destructive insects. Insect pests. — 42 — made of strong'sheet iron, and holds about five gallons of wash. It will, when properly charged with air and fluid, throw a continuous spray from ten to fifteen minutes without operating the handle. It is best to charge with air first and then with fluid. A gauge shows the quantity. About fifty pounds pressure per square inch of air, the balance fluid, and kept at one hundred pounds pressure, will do good work. The cylinders in the Bean spray pump are enameled inside. This will withstand the action of the acids or alkali in the solution; and the valves and plunger packing are made of a rubber compound that is chemically prepared to resist the action of corrosive washes. The valves of the latest improved Bean spray pumps are easily reached; nothing but a common wrench is necessary and no mechanical skill required to change the valve or plunger packing. The pump shown at Fig. 42 can have four lines of hose Fig. 43. Another good pump is the Improved Climax No. 2* (Fig. 43). It is mounted on a fifty-gallon barrel, and has two brass pumps like Climax No. 1, but larger and more powerful. Each of these pumps is complete in itself, but the two are connected by a crosshead at the top and are worked by[the same stroke. The two pumps are joined and empty into a ^-shaped *R. S. Chapman, 18 California Street, San Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. State board of horticulture. Division of entomology. [from old catalog]; Craw, Alexander. [from old catalog]. Sacramento, A. J. Johnston, supt. state printing
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsectpests, bookyear
