. Destructive insects. Insect pests. — 41 We will now turn our attention to the larger spray pumps. These- pumps are mostly used by the extensive fruit growers of the State. The Champion spray pump* (Fig. 38) is a very strong and compact pump, has double action, and the cylinder is lined with brass. The motion of the piston is horizontal, and the handle is so arranged that no bending is required. The pump has a good air chamber, which gives a continu- ous and even discharge. The valves are metal and lie directly beneath the air chamber, being easily reached when out of order. The plunger is a
. Destructive insects. Insect pests. — 41 We will now turn our attention to the larger spray pumps. These- pumps are mostly used by the extensive fruit growers of the State. The Champion spray pump* (Fig. 38) is a very strong and compact pump, has double action, and the cylinder is lined with brass. The motion of the piston is horizontal, and the handle is so arranged that no bending is required. The pump has a good air chamber, which gives a continu- ous and even discharge. The valves are metal and lie directly beneath the air chamber, being easily reached when out of order. The plunger is a solid disk of vulcanized rubber, and is made so that the wear may be instantly taken up by tightening a nut. A gauge can be attached to the pump. This is a very good idea, as when testing the pump on the first trip a certain pressure will show where the pump works best, and the man at the handle can always keep it at such pressure, thereby making the spraying Fig. 42. The Bean spray pumpsf (Figs. 39, 40, 41, and 42) are used very much throughout the State, and have proved very reliable pumps. The main feature of this pump is the charge receptacle. This is a cylinder, *Woodin & Little, 312 Market Street, San Francisco. tBean Spray Pump Company, Los Gates, L' 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
