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US Patent: 1,261,092
Wrench
Patentee:
Fred R. Allen - Providence, RI

USPTO Classifications:
81/60

Tool Categories:
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Allen Wrench and Tool Co. - Providence, RI

Witnesses:
A. F. Macready
Augustus F. Friend
Howard E. Barlow

Patent Dates:
Applied: Jun. 18, 1914
Granted: Apr. 02, 1918

Patent Pictures: [ 1 | 2 ]
Fred R. Allen patent April 2, 1918
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Description:
Ratchet wrench with the ratchet head having a roughly spherical surface with teeth correspondingly cut. This enables the handle to vary the angle in relation to the driven member. The wrench must be flipped over to switch between tightening and loosening.

Produced as the ALLEN UNIVERSAL WRENCH as the driving member for a socket set.

Cited as a reference in patent no. 2,709,386.

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