US Patent: 806,581 - Head for Compasses


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US Patent: 806,581

Head for Compasses

Patentee:

Georg Schoenner (exact or similar names) - Nuremburg, Germany

USPTO Classifications:

33/558.5

Tool Categories:

layout tools : compasses

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Feb. 15, 1905
Granted:	Dec. 05, 1905

Patent Pictures:

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Description:

This is a design for the joint in a draftsman's compass or dividers. It uses a spring-loaded joint with a fixing screw to prevent the compass from changing adjustment when used.