. L'encyclopédie de l'horticulture ; pratique un système de référence de l'horticulture commerciale, couvrant les phases pratiques et scientifiques de l'horticulture, en particulier pour les fruits et légumes ;. Jardinage ; culture ; fruits-légumes. Encyclopédie de l'Horticulture 1894 PRATIQUE 52. Fig. 8. Stewart de la crépine. Tuyau flexible d'aspiration ou le fil-bordée d'un flexible d'aspiration, qui est fourni avec les machines nécessitant une telle connexion, doit être de la meilleure qualité. L'une et un quart-pouce de conduites, bien que n'étant pas flexible, ni aussi facilement changé comme le même diamètre tuyau d'aspiration, poss

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. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. 1894 ENCYCLOPEDIA OF PRACTICAL HORTICULTURE 52. Fig. 8. Stewart Strainer. Suction Hose or Pipe The wire-lined suction hose, which is furnished with machines requiring such a connection, should be of the very best quality. One and one-fourth-inch pipe connections, although not flexible, nor as easily changed as the same diameter suction hose, possess the advantage of not becoming leaky, are not affected by the oil sprays, and cost very little when their replacement becomes necessary. However, a suction hose permits the washing out of the pump without wash- ing out the tank, and it is usually long enough to be placed in the storage tank when using a tank filler. Plain hose will collapse when the pump is operated, hence it cannot be used in place of wire-lined suction hose. Air Chambers The air chamber, in most cases, comes next in order. This serves a two-fold purpose; first, it acts as a storage for the liquid under pressure; secondly, the air confined above the stored liquid is a resilient body which tends to equalize the pressure when there is a sudden in- flux of liquid. When a pump has a large capacity per stroke, and is equipped with a small air chamber, it is not unusual to see the indicator on the pressure gauge swing through a range of fifteen to forty pounds at every stroke of the pump. The strain upon hose and connections is ex- tremely severe, and the shock upon the closing valve is comparable to the blow from a hammer, when the pump is op- erated under these conditions. The capacity of the air chamber on power outfits should be at least one-half as great as the amount of liquid the pump delivers per minute when it is operated tf^lM^M. Please note that these images are extracted from scanned page images that

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