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US Patent: 1,081,684
Compression Wrench
William H. Lutz - Philadelphia, PA

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Lutz-Webster Engineering Co. - Philadelphia, PA

Lutz-Webster Engineering Co. - Philadelphia, PA

M. E. Byrne
C. D. McVay
L. Douville
P. F. Nagle

Patent Dates:
Applied: Jan. 24, 1913
Granted: Dec. 16, 1913

Patent Pictures:
William H. Lutz patent December 16, 1913
USPTO pdf tiff
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An improvement on Lutz's previous Compression Wrench design which received patent no. 1,054,700. In the improvement, the parts are simplified and made more robust, the retaining spring is replaced with a pivoted latch, and the adjustable fulcrum shoe feature is eliminated.

The wrench was supplied as alternative to a ratchet handle in a drill post equipment produced by the Lutz-Webster Engineering Co. The company also advertised a lathe dog employing this principle. Both the wrench and lathe dog could be fitted with a range of girth sizes.

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