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US Patent: 1,188,890
Stencil-Compasses
Patentee:
Ernest J. Brasseur (exact or similar names) - Chicago, IL

USPTO Classifications:
33/27.03

Tool Categories:
layout tools : compasses
layout tools : compasses : trammels

Assignees:
A.B. Dick - Chicago, IL

Manufacturer:
A.B. Dick - Chicago, IL

Witnesses:
H. H. Muhan
Joseph Teal

Patent Dates:
Applied: Jan. 26, 1916
Granted: Jun. 27, 1916

Patent Pictures:
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Report data errors or omissions to steward Ralph Brendler
Description:
This is a simple trammel that attaches to a drafting pen. Instead of the traditional inking nib, however, it uses a small rotating cutter, allowing the user to make a clean cut of a perfect circle.

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