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US Patent: 496,595
Carriage Wrench
James K. Byler - Morgantown, PA
Henry S. Zook - Morgantown, PA

USPTO Classifications:
81/124.3, 81/125.1

Tool Categories:
wrenches : axle nut wrenches
wrenches : nut wrenches



Ed. A. Kelly
W. G. Stewart
Calvin Jackson

Patent Dates:
Applied: Dec. 20, 1892
Granted: May 02, 1893

Patent Pictures: [ 1 | 2 ]
James K. Byler and Henry S. Zook patent May 2, 1893
USPTO pdf tiff
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Malleable iron carriage wrench. The patented feature is the "flared" handle segment on the socket end which will allow the wrench to be placed on the ground and hold a greasy axle nut off the ground without tipping over.

Examples designed for square and hexagonal axle nuts are extant. Most are marked more extensively than the examples in the 2nd image: "SUSQUEHANNA FERTLIZER CO. // OF BALTIMORE CITY MD. PAT MAY 2, 93" "H.S. ZOOK's VEHICLE WRENCH // PAT MAY 2 1893 BLUE ROCK PA. Z" etc.

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