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US Patent: 1,101,381
Anton E. Anderson - Okmulgee, OK
Frank  L. Bailey - Okmulgee, OK
William C. Cummings - Okmulgee, OK

USPTO Classifications:
81/165, 81/177.9, 81/62

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : wrench adjustment types : angle adjustable wrenches

Anderson-Bailey-Cummings Company - Okmulgee, OK

Adjustable Ratchet Wrench Co. - Chicago, IL

C.  H. Wagner
G. W. Kirkley
O. M. Cummings
J. O. Waibs

Patent Dates:
Applied: Apr. 23, 1913
Granted: Jun. 23, 1914

Patent Pictures: [ 1 | 2 ]
Anton E. Anderson, Frank L. Bailey and William C. Cummings patent June 23, 1914
USPTO pdf tiff
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Ratchet-like adjustment for the angle of the handle and the head. The jaw opening adjusts with a knurled adjusting worm engaging rack teeth on the movable jaw.

Marketed as the ANDERSON; and produced in 6 inch, 8 inch and 10 inch sizes.

The same design also appears as "MEPHISTO."

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