US Patent: 1,188,890
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Stencil-Compasses
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Patentee:
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Ernest J. Brasseur (exact or similar names) - Chicago, IL |
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Patent Dates:
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Applied: |
Jan. 26, 1916 |
Granted: |
Jun. 27, 1916 |
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Ralph Brendler
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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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