Wood pattern-making; the fundamental principles and elementary practice of the art by Purfield Horace Traiton

Author:Purfield, Horace Traiton
Language: eng
Format: epub
Tags: Patternmaking
Publisher: Ypsilanti, Mich., The Scharf tag, label & box co.
Published: 1906-03-25T05:00:00+00:00

FiG. 56.

ticular case. Consequently, in preference to a gear of any specific size, gears of the last mentioned kind will be considered.

The part to be considered first is the rim or periphery of the wheel, to which the teeth are fastened. There

WOOD PATTERN MAKING

are several ways that this may be built up; the difference is mainly in regard to the method of holding it in the lathe while being turned. The actual building should be done as explained for the pulley rim, that is, with segmental pieces of wood of the required size and thickness. As the cross section is of somewhat different shape, the segments will of course vary also. If the gear is to be large enough so that both sides can be gotten at at the same time while running in the lathe, the best way is to build up the rim on what may be called a three-armed chuck. This is made as illustrated by Pig. 56. The width of the arms will be determined by the

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