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US Patent: 588,365
Adjustable Spanner
Rudolf Stocker - London, England

USPTO Classifications:
81/134, 81/356, 81/361, 81/413, 81/427

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches
wrenches : wrench adjustment types : auxiliary levers on wrenches


Not known to have been produced

G. F. Redfern
John E. Bousfield

Patent Dates:
Applied: Apr. 02, 1897
Granted: Aug. 17, 1897

Patent Pictures:
Rudolf Stocker patent August 17, 1897
USPTO pdf tiff
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The movable jaw has a frame with an angled section and spring connection to the adjusting lever. The adjusting lever has rack teeth that engage rack teeth on the shank of the fixed jaw. A tapered end on the adjusting lever adds gripping movement to the movable jaw. An extension on the movable jaw frame facilitates sliding the jaw into position with the gripping teeth are disengaged.

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