US Patent: 63,656 - Improvement in Dividers and Calipers


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 63,656

Improvement in Dividers and Calipers

Patentee:

Sylvanus Sawyer (exact or similar names) - Fitchburg, MA

USPTO Classifications:

33/558.06

Tool Categories:

layout tools : calipers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

A. Nouwt

David Abraham

Patent Dates:
Granted:	Apr. 09, 1867

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler

Description:

This design for a compass joint features a center stem that turns to adjust the caliper width. This idea was improved by the inventor as patent #79,603 (7/8/1868).