[Fruit culture] . Power Sprayers.—^For full-bearing orch-ards of 15 acres or more, gasoline-power sprayers, two typesof which are shown in Figs. 20 and 21, have generally giventhe best satisfaction. As the name would indicate, the powerfor these sprayers is furnished by a gasoline engine. Thestructure of gasoHne engines cannot be discussed here; how- 38 ESSENTIALS OF FRUIT CULTURE §2 ever, in buying a gasoline outfit the construction of the engineshould be carefully examined and the purchaser should becertain that it is durable before buying. Since the enginemust be hauled around, generally, w
[Fruit culture] . Power Sprayers.—^For full-bearing orch-ards of 15 acres or more, gasoline-power sprayers, two typesof which are shown in Figs. 20 and 21, have generally giventhe best satisfaction. As the name would indicate, the powerfor these sprayers is furnished by a gasoline engine. Thestructure of gasoHne engines cannot be discussed here; how- 38 ESSENTIALS OF FRUIT CULTURE §2 ever, in buying a gasoline outfit the construction of the engineshould be carefully examined and the purchaser should becertain that it is durable before buying. Since the enginemust be hauled around, generally, with one team, it is impor-tant that it be reasonably light, and durability may be sacri-ficed to lightness to some extent. It should not be assimied,however, that a heavy engine is always more durable than alighter one, since workmanship figures very largely in thedurability of engines. In spraying with a gasoline engine, probably two of the mostessential though the simplest items of care are to keep all Fig. 22 especially the cylinder, oiled with good oil, and to keep all thebolts tight. The small engines generally used with sprayingoutfits must run rapidly and if any bolts are loose the engineis rapidly worn. In case the engine fails to work, the batteriesshould first be tested to see whether the spark produced issufficient to ignite the gasoline. The gasoline tank shouldnext be examined to see whether it is empty. Then the sparkplug should be examined, for it often becomes gimimed orsoaked with oil, and instead of a spark being produced, a con-tinuous current is given that does not ignite the gasoline used should be perfectly pure, as the presenceof water or dirt in the gasoline gives much trouble. When § 2 ESSENTIALS OF FRUIT CULTURE 39 back-flaring—that is, an explosion with a jet of flame from thecarbureter—occurs, there is not a proper mixture of air andgas, or the spark occurs at the wrong time. An impropermixture is also indicated by smokin
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Keywords: ., bookcentury1900, bookdecad, booksubjectfruitculture, bookyear1912
