US Patent: RE10,557 - Throttle Valve


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US Patent: RE10,557

Throttle Valve

Patentee:

Edmund Lunkenheimer (exact or similar names) - Cincinnati, OH

USPTO Classifications:

251/101

Tool Categories:

wrenches : auxiliary wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Chas. Anderson

E. C. Pollock

R. M. Christopher

Patent Dates:
Applied:	Nov. 11, 1884
Granted:	Feb. 03, 1885

Patent Pictures:

Edmund Lunkenheimer reissue patent October 3, 1885

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Description:

Throttle valve for steam engines; the valve faces are machined to prevent leakage. The threaded hexagon cap eases the gate valve off and on the valve seat. The patent calls the operating lever a wrench.