Lathes Page: 56
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35-36 AIR CORPS
held in the lathe headstock. In fastening the wire, one chuck jaw is
loosened and the wire placed between the chuck jaw and the man-
drel. It is good practice to support the outer end of the mandrel
with the tailstock center to prevent distortion. The wire is placed
in a lathe boring tool holder, together with a piece of brass, having
a notch filed in it and tightened just enough to prevent slippage.
Tension or compression springs of different pitches may be wound
in this manner by selectively gearing the longitudinal carriage feed.
(See fig. 51.)
FICutE 1.--Spring winding on lathe.
DRILLING, REAMING, AND BORING
Drilling- --- 36
Renaming ..______ __ __ _ _ 37
Boring ._ ..- -.- --.. . . . 38
36. Drilling.-a. Drilling is ordinarily done in the lathe by hold-
ing and revolving the work in the lathe chuck, with the drill suit-
ably held in the tailstock and fed by means of the tailstock hand
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United States. Army. Air Corps. Lathes, book, November 29, 1940; Washington, D.C.. (digital.library.unt.edu/ark:/67531/metadc96655/m1/58/: accessed July 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.