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US Patent: 776,944
Joseph E. Richards - Boston, MA
Henry H. Muggley - Boston, MA

USPTO Classifications:
81/159, 81/175

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches


Richards Tool Co. - Boston, MA

W. N. Woodson
E. S. Hayden
Geo. A. Perkins

Patent Dates:
Applied: Apr. 08, 1904
Granted: Dec. 06, 1904

Patent Pictures: [ 1 | 2 ]
Joseph E. Richards and Henry H. Muggley patent December 6, 1904
USPTO pdf tiff
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Quick adjust nut wrench with the adjustment means enclosed in a protective sleeve that serves as the outside of the handle; in this patent a couple of options for interrupted threads engaging teeth on an extended leg of the movable jaw are shown.

The wrench as produced has an internal helical thread that engages spur teeth on the extended base of the movable jaw, as shown in patent no. 746,113.

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