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The Americana Volume 2 : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world

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The Americana Volume 2 : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world

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    Available in PDF Format | The Americana Volume 2 : a universal reference library, comprising the arts and sciences, literature, history, biography, geography, commerce, etc., of the world.pdf | English
    Frederick Converse Beach (Author)
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...the water in the jacket and that in the radiator, the latter being unusually large. By increasing the dimensions of the pump, to produce more rapid circulation, and reducing the diameter of radiating tubes while increasing their total radiation surface, the amount of water to be carried and the capacity of the tank, have been gradually diminished. With the socalled 'honeycomb' coolers the water tank is almost dispensed with, consisting of only two small compartments framing a network of flattened tubes erected in front of the motor, through which air is drawn rapidly by means of an exhaust fan, usually forming the.spokes of the engine fly-wheel. The air current in this case is defined within a closed motor hood. In other cnses the hood is provided with slits. In the winter when water might freeze and burst water jacket, cylinder or radiator, calcium chloride or glycerine is admixed to lower the freezing point, or a special oil distilled from crude petroleum is used instead of water. The water jackets were up to 1903 commonly cast integrally with the cylinders, cylinder heads and valve chambers, but the difficult cored castings were often faulty, especially when only cylinder heads and valve chambers were jacketed. More recently sheet copper has been secured to flanges on the cylinders, etc., so as to form a jacket between the copper and the plain cylinder casting, and weight reduction as well as some elasticity (affording security against accidental freezing of the water) have been gained thereby, while the quality of castings has been improved. With reference to sheet copper jackets, it is now noted, however, that difficulties were experienced in securing the joints against eventual leakage and in 1906 only three or four firms continued to employ...
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