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Main : Misc Packard Photos :  TOOTH FORM CHARTING MACHINE - 2776-A

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SubmitterBigKevMore Photos from BigKev    Last Update2018/7/23 8:20    Tell a friendTell a friend
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This machine is used for testing the form or curve of t'he teeth of transmission
and other gears after they have been ground.
To have the tooth contour correct in transmission and other spur gears is as
important as the unit itself, for long gear life cannot be obtained without a
very careful study and check of these important points.
Every gear blank and every tooth on the finished gear are not only carefully
made, but are manufactured completely in the Packard factory. This one responsibility
in addition to the advantage gained from harmony in design of the whole,
produces perfection in the finished product.
Packard transmission gears are forged from 5% nickel steel, and after machining
are carburized and hardened. There are no finer transmission gears made. In
fact, many other companies are using an oil-hardened steel gear which, of course,
is considerably less in cost than the carburized nickel steel. Each gear receives
an individual test and again - one of the reasons why Packard.gears do last longer
and are worth more from a first cost angle.

Picture courtesy of Roscoe Stelford

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