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US Patent: 806,581
Head for Compasses
Patentee:
Georg Schoenner - Nuremburg, Germany

USPTO Classifications:
33/558.5

Tool Categories:
layout tools : compasses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Leonard Koerber
Oscar Bock
H. M. Kuchne
John A. Percival

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.

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