Lathes Page: 36
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(1) An overarm is provided on the center rest so that work may be
removed and replaced without disturbing the jaw adju-tinent. This
feature also allows the niachining of duplicate pieces.
(2) To prevent marring of work which has ground surfaces, the use
of copper shim stock between the center rest jaws and the work is
(3) Center rest bearing surfaces must be kept lubricated with a
mixture such as white lead and lubricating oil to prevent scoring.
FuI;Ce1n :;'.-Application of follower rest.
21. Follower rest.-The follower rest is also used to support
work that may spring or distort while being machined. It is claiimped
to the saddle of the lathe, and the two jaws are adjusted and locked
upon a surface of the work which has previously been cut. Th.e tool
is usually mounted a short distance to the left of the follower rest jaws,
and as the carriage and tool move along the work the rest gives sup-
port almhnost directly behind the cut (fig. 33). A follower rest is essen-
tial in threading long work of small diameter and is very useful in
many other similar operations.
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United States. Army. Air Corps. Lathes, book, November 29, 1940; Washington, D.C.. (digital.library.unt.edu/ark:/67531/metadc96655/m1/38/: accessed March 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.