File:Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish (1871) (14783150073).jpg

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Identifier: sponsdictionaryo05spon (find matches)
Title: Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish
Year: 1871 (1870s)
Authors: Spon, Edward Byrne, Oliver Spon, Ernest
Subjects: Engineering
Publisher: London, New York : E. & F.N. Spon
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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;iin(iii;ii;i;;iign Fig. 3164. Spui-gears. Fig. 3165. The wheel to the right is termed a crown-wheel ; that gearing with it is a spur-gear.These wheels are not much used, and are only available for light work, as the teeth of the crown-wheel must necessarily be thin. 1642 GEARING. 3167.
Text Appearing After Image:
GEAEING. 1643 Fig. 3166. Multiple-gearing—a recent invention. The smaller triangular wheel drives thelarger one by the movement of its attached friction-rollers in the radial grooves. Fig. 3167. These are sometimes called brush-wheels. The relative speeds can be varied bychanging the distance of the upper wheel from the centre of the lower one. The one drives theother by the friction or adhesion, and this may be increased by facing the lower one with india-rubber. Fig. 3168. Transmission of rotary motion from one shaft at right angles to another. Thespiral thread of the disc-wheel drives the spur-gear, moving it the distance of one tooth at everyrevolution. Fig. 3169. Worm or endless screw and a worm-wheel. This effects the same result as Fig. 3168 ;and as it is more easily constructed, it is offener used. Fig. 3170. Friction-wheels. The surfaces of these wheels are made rough, so as to hite asmuch as possible ; one is sometimes faced with leather, or, better, with vulcanized india-

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Spon, Edward; Byrne, Oliver;

Spon, Ernest
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28 July 2014
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current05:37, 14 October 2015Thumbnail for version as of 05:37, 14 October 20152,364 × 4,272 (883 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': sponsdictionaryo05spon ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fsponsdictionaryo05spon%2F fin...

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