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Robert Stephens Mears
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19,358. Mears, R. S. Sept. 25. Check valves for lubricators. A valve 33, controlling the admission of oil from a chamber 10 to a locomotive cylinder &c., is regulated by a spring 42, the tension of which is adjusted by a screw 43, fitted in a nut 44 and covered by a cap 45.
GB190519358D1905-09-251905-09-25Improvements in Lubricating Devices.
ExpiredGB190519358A
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