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US Patent: 2,930,343
Lathe Layout Degree Device
Patentee:
Ralph W. Derrick (exact or similar names) - Picture Rocks, PA

USPTO Classifications:
116/215, 116/237

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories and attachments

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Aug. 22, 1957
Granted: Mar. 29, 1960

Patent Pictures: [ 1 | 2 ]
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Description:
Wilkinson, Mawhinney & Theibault - patent attorneys

A lathe layout degree attachment for use with the head spindle of a lathe having a bore formed therein, a substantially hollow tubular shaft having an inner and an outer end, a rotational degree scale disc member secured to the outer end of said shaft and having the degree portions of a complete Circle marked thereon, the inner end of said shaft being received within said bore and having a split end detachably coupling said attachment to the head spindle of said lathe, a pendulous index member freely mounted on said Shaft adjacent said scale member whereby rotation of said shaft and scale member with said head spindle will cause said pendulous index member to indicate the degree of rotation of said shaft and head spindle, and locking means comprising a shaft having an operating disc secured to one end and having the other end threaded to receive a tapered nut engageable with the split end of the tubular shaft to expand said tubular shaft into, frictional engagement with the inner bore of the lathe spindle.

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