US Patent: 799,917


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US Patent: 799,917

Wrench

Patentee:

Robert N. Miller (exact or similar names) - Pittsburgh, PA

USPTO Classifications:

81/145

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

E. E. Potter

K. H. Butler

C. A. Randolph

Patent Dates:
Applied:	May 27, 1905
Granted:	Sep. 19, 1905

Patent Pictures:

Robert N. Miller Pat. Sept. 19, 1905

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Description:

An improvment on Miller's Feb. 7, 1905 patent (no. 781,963). In this improvement, the curved yoke at the base of the adjusting screw can be pushed toward the shank, thereby releasing gripping teeth on the back side of the yoke. This allows the entire adjustable jaw assembly to be quickly adjusted. The screw adjuster provides final fine adjustment.