US Patent: 618,506


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US Patent: 618,506

Wrench

Patentee:

Joseph H. Hanson (exact or similar names) - Crystal Falls, MI

USPTO Classifications:

81/142, 81/68

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

Joseph H. Hanson - Crystal Falls, MI

Sherman T. Handy - Crystal Falls, MI

A. M. Darling - Crystal Falls, MI

D. R. Brown - Mills Centre, WI

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Apr. 21, 1897
Granted:	Jan. 31, 1899

Patent Pictures:

Joseph H. Hanson patent January 31, 1899

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Description:

The patented feature is adjustment by a rack bar held in engagement with rack teeth by a ball or balls. The ball or balls can be retracted by turning sockets in a parallel "bolt" toward the rack bar.

The adjustment means is shown applied to a combination nut & pipe "monkey wrench," to an adjustable chain wrench, and to an adjustable open end wrench.