US Patent: 44,358
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| Improvement in hydraulic jacks
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Patentee:
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| Thomas H. Watson (exact or similar names) - New York, NY |
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Patent Dates:
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| Granted: |
Sep. 20, 1864 |
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Jeff Joslin
Vintage Machinery entry for Richard Dudgeon
Vintage Machinery entry for Watson-Stillman Co. (E. Lyon & Co.)
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Description: |
| "The nature of my invention consists in providing a reservoir holding fluids sufficient, when forced into the cylinder of the jack, to push the ram out is entire length when it is in a horizontal position, which is not accomplished by the hydraulic jacks now in use and described in Fig. 1, in which the force-pump is in the center of the reservoir, and when the jack is in a horizontal position half the contents of the reservoir is below the center of the pump and cannot run into and supply it with water sufficient to more than one-third fill the cylinder..." This patent acknowledges patent 8,203, which was granted to Richard Dudgeon who at the time was working for Thomas H. Watson's stepfather, Eliphalet Lyon. |
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