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US Patent: 473,906
Valve Gear for Steam Engines
Patentee:
Milan C. Bullock (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
91/187

Tool Categories:
propulsion and energy : steam engines : steam engine valve gear

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Clarence Poole
Harry Cobb Kennedy
William J. Kennedy
Louis M. F. Whitehead

Patent Dates:
Applied: Jan. 14, 1890
Granted: May 03, 1892

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
Abstract:

This invention relates to improvements in steam-engines and more particularly to the construction of the reversing-gear for such engines.

Claim:

An engine comprising a frame, a cylinder or cylinders attached to the frame, a crankshaft actuated from said cylinders, an eccentric crankpin supported upon the crank-pin of the crankshaft and connected with and actuating the valves of the engine, a sleeve interposed between the shaft-bearing adjacent to the crank and the shaft, said sleeve being connected with and adapted to give oscillatory movement to the eccentric crank-pin, and a longitudinally-moving sleeve upon the shaft, provided with a spiral flange engaging the said sleeve first mentioned, by which the later sleeve may be partially rotated with reference to the shaft and the position of the eccentric crank-pin thereby changed to accomplish the reversal of the engine.

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