US Patent: 785,581
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Patentee:
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| Alvertus V. Shorts (exact or similar names) - Allegheny, PA |
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Patent Dates:
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| Applied: |
Apr. 06, 1904 |
| Granted: |
Mar. 21, 1905 |
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Patent Pictures:
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Russ Allen.
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Description: |
| Four levels are housed in one annular frame that can be rotated by use of a worm gear. Casing is provided with degree markings to allow any angle desired to be set.
Known example is marked A. V. SHORTS/PAT'D. MAR.21.05/TOWNVILLE, PA. and W.H.HILL/MANFR.CAMBRIDGE SPRINGS,PA. |
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