United States Patent Office.

STEAM-ENGINE VALVE-GEAR.

| September/October 1958

  • Steam Engine Valve Gear


  • Steam Engine Valve Gear

OF BATTLE CREEK, MICHIGAN, ASSIGNOR OF ONE-HALF TO MINARD LAFEVER, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 236,052, dated December 28, 1880.

Application filed May 3, 1880. (Model.)

To all whom it may concern:



Be it known that I, ELON A. MARSh, of Battle Creek, in the county of Calhoun and State of Michigan, have invented a new and useful Improvement in Steam-Engine Valve-Gear, of which the following is a specification.

My invention relates to certain improvements in reversing - gear for steam-engines; and it consists in the combination, with the main shaft of the engine and the valve-rod, of two intermeshing gear-wheels of equal diameter, one mounted on the main shaft and the other upon a lever fulerumed to the main shaft and connecting with the valve-rod by a wristpin in such manner that the last-mentioned wheel may be thrown to either side of a line on the plane of the reciprocation of the valve and the center of the main driving-shaft, and thus change the motion of the valve and engine.



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