Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 1,223,012
Screw Thread Gaging Device
Patentees:
Frederick W. Whelpley - Greenfield, MA
Frank A. Bicknell - Greenfield, MA

USPTO Classifications:
33/199R

Tool Categories:
metalworking tools : machinist tools : measuring tools : thread gages

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. R. Driscoll
Roland A. Frye
Herbert S. Huricke

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

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
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.

Copyright © 2002-2017 - DATAMP