US Patent: 335,146
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| Lubricator
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Patentee:
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| James Powell (exact or similar names) - Cincinnati, OH |
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Patent Dates:
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| Applied: |
Sep. 14, 1885 |
| Granted: |
Feb. 02, 1886 |
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Joel Havens
"Vintage Machinery" entry for William Powell Co.
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Description: |
| Abstract:
This invention relates to those devices which rc employ a spring-actuated piston for inducing a forced feed of that kind of turgid lubricant known as "grease", in contradistinction from oil or other similar fluids which are automatically discharged by simple gravitation and the first part of my improvements comprises a novel combination of piston, piston- rod, spring, hollow screw-threaded adjusting- stem, and an external nut that engages with said stem, the details of said combination.
Claim:
An improved grease-cup, consisting of a cylindrical fount provided with a discharge-passage and traversed by a piston whose rod passes freely through a tube, which latter is screw-threaded externally to engage with the cap of said fount, a spring being interposed between said piston and the externally-threaded tube, in combination with a cutoff located transversely of said passage in the base of said fount for the purpose of enlarging or contracting the area of the same, and thereby controlling the speed of said piston. |
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