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Description: |
| This patent was improved by patent #901,070.
Abstract:
The object of my invention is to produce a simple easily-manufactured pump especially designed for pumping lubricating-oil in small regulated quantities from a reservoir to a part, to be lubricated.
Claim:
The combination, with a suitable reservoir, of a cylinder formed integral therewith within the reservoir and having eduction and induction ports communicating with the bore thereof, a piston rotatably and axially reciprocal within the cylinder and having a passage formed therein communicating with the cylinder at the end of the piston and adapted to be brought into registry with the. induction and eduction ports successively, a spring for normally urging the piston in one direction, a shaft, a cam carried by said shaft and adapted to drive the piston axially in opposition to the spring, and a pair of meshing gears carried by the shaft and piston. |
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