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US Patent: 1,728,552
Wrench
Patentees:
Alexander D. Kennedy (exact or similar names) - Chicago, IL
John A. Gillies (exact or similar names) - Dodge City, KS

USPTO Classifications:
73/862.26

Tool Categories:
wrenches : torque wrenches

Assignees:
Du-Wel Steet Products Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Feb. 04, 1927
Granted: Sep. 17, 1929

Patent Pictures:
Alexander D. Kennedy & John A. Gillies patent Sept. 17, 1929
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Description:
Torque wrench for railroad track bolts. The deflection of the main shank compared to a supplemental parallel frame actuates a pointer. The scale is attached to the main shank. Du-Wel was advertising the GILKEN TORSION WRENCH in 1929.

An improved torque indicating wrench described as improvement to this patent received patent 2,125,945.

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