US Patent: 461,643
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| Screw-jack
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Patentee:
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| Henry W. Robie (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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| Applied: |
Apr. 29, 1891 |
| Granted: |
Oct. 20, 1891 |
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Jeff Joslin
Vintage Machinery entry for Riehlé Brothers
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Description: |
| A 1920 condensed catalog from Riehlé Brothers Testing Machine Co. mentions that their catalog "F" covers "Hand and power operated hydraulic pumps and presses, also Riehlé-Robie patented screw jacks, etc." |
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