. Control of horse flies on cattle. Horseflies; Insecticides. END VIEW SCALEâI" = I2" TREADLE SPRING ^ TREADLE, RAISED â 6"- 6"- -6"- 34" 6"- 6"^ PROPOSED PLAN FOR Z. a W. SPRAYER â¢SHOCK SPRING. Diagrams of working model used in 1950 experi- ments are shown at left. A proposed adaptation of applicator in which Z. & W. sprayer may be used is shown above. Several adaptations are possible, and builders of applicators are iirged to use their ingenuity. The two treadle springs may be heavy duty door springs. The shock spring should be short and heavy eno
. Control of horse flies on cattle. Horseflies; Insecticides. END VIEW SCALEâI" = I2" TREADLE SPRING ^ TREADLE, RAISED â 6"- 6"- -6"- 34" 6"- 6"^ PROPOSED PLAN FOR Z. a W. SPRAYER â¢SHOCK SPRING. Diagrams of working model used in 1950 experi- ments are shown at left. A proposed adaptation of applicator in which Z. & W. sprayer may be used is shown above. Several adaptations are possible, and builders of applicators are iirged to use their ingenuity. The two treadle springs may be heavy duty door springs. The shock spring should be short and heavy enough to absorb the sudden application of animal weight on treadle. The compression spring (or, with Z. & W. sprayer, a light extension spring) should be strong enough to lift the lever and extend the spray plunger. Plunger rod of sprayer should be loosely attached to lever to reHuce friction and wear in sprayer. Connecting rod, which is attached to treadle and operates sprayer, may be a heavy wire or 1/8 to 3/16 inch iron rod. General directions: Place chute on well-drained soil and where cattle must pass through it on the way to water or salt. Treat posts, treadle, floor, and other wood parts with creosote or other wood preservative. Keep water and water sprays out of sprayer to prevent its corroding. -7-. 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 Bruce, Willis Nels; Decker, G. C. (George Clemens), 1898-. Urbana
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Keywords: ., bo, bookcentury1900, bookpublisherurbana, booksubjectinsecticides
