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US Patent: 519,541
Micrometer Gage
Patentee:
Henry McBride (exact or similar names) - New Haven, New Haven County, CT

USPTO Classifications:
33/827, 33/828

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers

Assignees:
Wilbur F. Day - New Haven, New Haven County, CT
Joseph P. Lavigne - New Haven, New Haven County, CT

Manufacturer:
Goodell-Pratt Co. - Greenfield, Franklin County, MA

Witnesses:
J. H. Shumway
Lilliam D. Kelsey
Fred C. Earle

Patent Dates:
Applied: Jan. 07, 1893
Granted: May 08, 1894

Patent Pictures: [ 1 | 2 | 3 ]
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Lavigne Automatic Mfg. Co.
Description:
Earle & Semour-patent attorneys

Joseph P. Lavigne owned the Lavigne Micrometer Co. of New Haven, CT.

Abstract:

My invention relates to an improvement in micrometer gages, the object being to produce a simple, durable, accurate and convenient instrument for inside measurements. With these ends in view, my invention consists in the combination with a graduated, internally threaded, hollow beam of a measuring sleeve fitting over the same, a measuring screw connected with the outer end of the said sleeve, and taking into the open end of the beam, a chuck located at the outer end of the sleeve, and a removable measuring-piece inserted into the said chuck in line with the beam, sleeve, and screw. My invention further consists in certain details of construction and combinations of parts.

Claim:

In a micrometer gage, the combination with a graduated, internally threaded hollow beam, of a measuring sleeve fitting over the same, a measuring-screw connected with the outer end of the said sleeve, and taking into the beam, a chuck located at the outer end of the sleeve, and a removable measuring piece inserted into the said chuck in line with the beam, sleeve and screw.

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