US Patent: 1,874,517 - Screw Thread Gauging


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US Patent: 1,874,517

Screw Thread Gauging

Patentee:

James Hartness (exact or similar names) - Springfield, Windsor County, VT

USPTO Classifications:

33/199R, 33/DIG.14

Tool Categories:

metalworking tools : machinist tools : measuring tools : thread gages

Assignees:

None

Manufacturer:

Jones & Lamson Machine Co. - Springfield, Windsor County, VT

Witnesses:

Unknown

Patent Dates:
Applied:	Aug. 23, 1928
Granted:	Aug. 30, 1932

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Jones & Lamson Machine Co.

Description:

This sophisticated thread gauge is used to verify that major diameter, pitch diameter, minor diameter, thread angle, and thread pitch are all with specification.