US Patent: 420,484
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| Instrument for Copying Drawings
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Patentee:
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| Ruel W. Whitney (exact or similar names) - San Francisco, San Francisco County, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 23, 1889 |
| Granted: |
Feb. 04, 1890 |
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Patent Pictures:
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Joel Havens
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Description: |
| Abstract:
This invention relates to that class of instruments or machines used in drawing or copying, and is intended to produce a copy of the exact size as the original, which I am not aware has ever been done before by any drawing-instrument.
Claim:
The combination of rod A, sleeves P and G rod D, projecting pieces D' D' D" D' bars IE E, rod Fi, pencil-holder G, and tracing-point G', with step or foot G. |
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