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US Patent: 459,648
Instrument for Describing Outlines of Objects
Patentee:
William Potter - New York, NY

USPTO Classifications:
33/41.5

Tool Categories:
layout tools : scribes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. F. Acker
C. Sedgewick
Donn Twitchell

Patent Dates:
Applied: Jan. 15, 1891
Granted: Sep. 15, 1891

Patent Pictures:
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Description:
This is a simplified version of the inventor's earlier design (450,892 - 4/21/1891) that does away with the springs in favor of a simple sliding arm.

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