US Patent: 373,100 - Protractor and Circle Scribing Attachment for Rulers


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


Quick search:	Patent number:	Patent Date:

US Patent: 373,100

Protractor and Circle Scribing Attachment for Rulers

Patentee:

James G. Smith (exact or similar names) - Jamestown, NY

USPTO Classifications:

33/473

Tool Categories:

rules : rule attachments

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Frank W. Stevens

Fred R. Peterson

Patent Dates:
Applied:	Mar. 30, 1887
Granted:	Nov. 15, 1887

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.

Description:

Attachment for a bench rule that allows it to be used for scribing circles and drawing angles. Loop on the end is for a pencil to be used as the pivot point.