US Patent: 1,223,012 - Screw Thread Gaging Device


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US Patent: 1,223,012

Screw Thread Gaging Device

Patentees:

Frederick W. Whelpley (exact or similar names) - Greenfield, Franklin County, MA

Frank A. Bicknell (exact or similar names) - Greenfield, Franklin County, MA

USPTO Classifications:

33/199R

Tool Categories:

metalworking tools : machinist tools : measuring tools : thread gages

Assignees:

None

Manufacturer:

Bicknell-Thomas Co. - Greenfield, Franklin County, MA

Witnesses:

G. R. Driscoll

Roland A. Frye

Herbert S. Huricke

Patent Dates:
Applied:	Jun. 05, 1916
Granted:	Apr. 17, 1917

Patent Pictures:

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Description:

Horatio S. Bellows - patent attorney

This invention relates to a novel device or instrument for gauging and testing the pitch or "lead" of screw threaded parts, and has for its object to provide a device of simple and comparatively inexpensive structural character, and which is susceptible of quick and convenient use for determining whether the threads on an article, as for instance a tap, die or other threaded piece, and designed to be of a certain number to an inch are truly formed as per the requirement, or at variance therefrom to any appreciable extent.