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US Patent: 138,932
Wrenches
Improvement in Wrenches
Patentee:
Henry Franklin Read - Brooklyn, NY

USPTO Classifications:
81/145, 81/173, 81/DIG4

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

Assignees:
Henry Franklin Read - Brooklyn, NY
Edmund Beach - Brooklyn, NY

Manufacturer:
H. F. Read & Co. - New York, NY

Witnesses:
A. E. H. Johnson
Augustus H. Girard

Patent Dates:
Applied: Sep. 16, 1872
Granted: May 13, 1873

Patent Pictures:
H. F. Read Pat. May 13, 1873
USPTO pdf tiff
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READ RAPID TRANSIT WRENCH from 1879 AMERICAN MACHINIST (FLICKR)
Description:
The adjustable jaw component has teeth engaging a rack on the main shank for quick adjustment, and an intermediate screw to "take up lost motion." Marketed as the READ & BEACH RAPID TRANSIT. Read patented pipe jaw and pipe cutter attachments for this wrench on May 14, 1878 (Pat. No. 203,774). The wrench and these accessories were described in an 1879 AMERICAN MACHINIST writeup. An overall "improvement" patent granted May 24, 1881 (Pat. No. 241,881) is reflected in markings on some examples of the READ RAILROAD WRENCH.

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