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US Patent: 1,363,274
Self Adjusting Wrench
James Webb Saffold - Cleveland, OH

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches

Victor Manufacturing Co. - Dayton, OH

Victor Manufacturing Co. - Dayton, OH

Albert Lynn Lawrence
John F. Dell

Patent Dates:
Applied: Nov. 30, 1917
Granted: Dec. 28, 1920

Patent Pictures:
James W. Saffold patent Dec. 28, 1920
USPTO pdf tiff
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The geometry of the swinging loop ends and the lobes on the handle extending into those loops are such that the wrench will bear on the sides of hexagon nuts and bolt heads. The design is intended to provide a type of ratchet action, and to lessen the chance of damaging the corners of hexagon nuts and bolts.

Produced as the VIMCO wrench, with initial sales and promotion from an Omaha, NE address.

Compare this to J.E. Meredith's patent no. 651,574.

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