Insect pests of farm, garden and orchard . -, as is necessary with the operation ofa gasolineengine pump. The trucks and tanks are much cheaper than thegasoline sprayers, but the cost of the engine and air-compressorat the charging station makes the total cost probably more. Itis also necessary for each tank to return to the charging station,and it is not possible to use a supply tank, a-s is commonly donewith gasoline sprayers. However, these outfits are in successfuloperation by some of the largest orchardists, who believe them to. Fig. 43.—Vermorel, Ixirdeaux, and disk type of nozzles. be m
Insect pests of farm, garden and orchard . -, as is necessary with the operation ofa gasolineengine pump. The trucks and tanks are much cheaper than thegasoline sprayers, but the cost of the engine and air-compressorat the charging station makes the total cost probably more. Itis also necessary for each tank to return to the charging station,and it is not possible to use a supply tank, a-s is commonly donewith gasoline sprayers. However, these outfits are in successfuloperation by some of the largest orchardists, who believe them to. Fig. 43.—Vermorel, Ixirdeaux, and disk type of nozzles. be much the best type of sprayers for large operations, so that theymerit study by those contemplating extensive spraying. Nozzles.—A good nozzle is as essential as a good pump for suc-cessful spraying. The best nozzles now in common use are ofthree types. The Vermorel type consists of a small chamlior into which theliquid is admitted at a tangent and leaves through a small hole in aremovable cap, thus making a fine, cone-shaped spray. A smallpin, with a spring to hold it back when not in use, serves as a dis-gorger to remove any sediment which may clog the outlet. Thistype of nozzle is made in many slightly different styles and oftensold under trade names, such as the Demorel, Mistry and slightly modified form has no spring attached to the disgorger,but has a loose cap which is hold away from the pin by the force of SPRAYING AND DUSTING APPARATUS 73 the liquid, and the outlet is disgorged by simply pressing the capd
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisheretcet, bookyear1912
