Latest Addition to the Directory of American Tools and Machinery Patents (DATAMP)

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Updated: 10 hours 34 min ago

US Patent: 3,981,209

July 11, 2020 - 12:39pm
Gripping Pincers Patentee: Yves Robert Caroff - Saint-Mande France Granted:1976-09-21

U.S. patent corresponding to French patent FR-2237730. The focus of the patent is a turnbuckle type adjusting mechanism for an adjustable pivot point locking plier wrench. The patent is also of interest because the curved spring (#13 in the drawings) appears in FACOM and "copy-cat" locking plier wrenches that otherwise correspond to French patent FR-1100195. The French patent was granted to manufacturer FACOM. The patent cites patents FR-1100105, Swiss and British patents, and U.S. patents 2,543,922, 2,672,778, 2,777,347, 2,981,133, 3,733,627 and 3,831,207 as references.
This is one of 65,293 patents currently in the database at datamp.org

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US Patent: 1,413,121

July 8, 2020 - 12:30pm
Wrench Patentee: John Arthur Johnson - Leavenworth KS Granted:1922-04-18

Turning the end of the handle adjusts the jaw opening; the effective length of the handle lengthens as the jaws open. This patent is of note because the inventor was former world heavyweight champion Jack Johnson, the first black man to hold that title. "My invention relates to improvements in wrenches and has for its object to provide an improved wrench which is of simple and durable construction, reliable in operation and easy and inexpensive to manufacture, which may be easily and readily adjusted and which is adapted to exert a powerful gripping action upon the work. "Another object is to provide an improved wrench of this character which in assembly presents a substantially unitary structure and which may be easily disassembled for purposes of replacement or repair." Munn & Co., attorneys
This is one of 65,251 patents currently in the database at datamp.org

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FR Patent: 1,100,105

July 7, 2020 - 12:29pm
Pince de Serrage Patentee: Granted:1955-09-16

This steward does not read French, and welcomes an English translation of the specifications and claims. The patent drawings describe a locking plier wrench with adjustable multiple pivot points, and the end of the lever handle hinged so it also serves as the lock release. The patent was issued to the French manufacturer FACOM, and does not identify an individual inventor. The FACOM 500 series locking plier wrenches appears to correspond to this patent. The patent is cited in the references for patent no. {2.799,195}.
This is one of 65,233 patents currently in the database at datamp.org

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US Patent: 4,799X

July 6, 2020 - 12:27pm
Engine for dividing scales, gauges, etc. Patentee: Lemuel Hedge - Windsor VT Granted:1827-06-20

This important patent was granted to one of the earliest New England makers of rules. According to a 1987 Gristmill (MWTCA) article by Clifford D. Fales, "It has been claimed that Hedge's original dividing engine remained in use in the Stanley Rule and Level Co. plant at least as late as 1923." The organ in the church at Windsor, VT was built by "local inventive genius" Lemuel Hedge.
This is one of 65,222 patents currently in the database at datamp.org

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US Patent: 766,835

July 3, 2020 - 12:21pm
Photographic Plate Holder Patentee: Alfred J. Merz - Yonkers, Westchester County NY Granted:1904-08-09


This is one of 65,190 patents currently in the database at datamp.org

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US Patent: 3,557,857

June 30, 2020 - 12:13pm
T-Nuts Patentee: Henry F. Swenson - Roseland, Essex County NJ Granted:1971-01-26

Abstract: A T-nut for use in slots of machine tool tables and the like includes a threaded hole disposed at an angle to the upper surfaces of the extending wings of the T-nut. The upper surfaces of the extending wings of the T-nut are provided with toothed or knurled surfaces to insure that the engaged surface does not slide in the T-grooves of the worktable when the T-nut is tightened against this groove.
This is one of 65,189 patents currently in the database at datamp.org

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US Patent: 1,758,775

June 25, 2020 - 12:04pm
Heat Dissipating Device Patentee: Charles C. Abbot - Pittsfield MA Granted:1930-05-13


This is one of 65,164 patents currently in the database at datamp.org

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US Patent: 1,557,864

June 24, 2020 - 12:03pm
Wrench Patentee: Raymond A. Mull - Benton Harbor MI Granted:1925-10-20

The patent is for the spring-loaded pivoted gripping surface on the adjustable jaw of the wrench. The retaining pin for the pivot is held by the wrench frame, but can be removed when the jaw is removed from the frame to facilitate replacement of the gripping piece when it wears. Compare R.C. Morris' Sept. 1, 1925 patent (no. 1,551,763). MANUFACTURER ATTRIBUTION: After comparing examples of the HOLLAND STEEL CORP HOLLAND PATENTED 1925 (later STEELGRIP) pipe wrench, and the PAT. PEND BULL DOG GRIPS - NEVER SLIPS BULL DOG WRENCH CO. BENTON HARBOR MICH pipe wrench (announced in spring 1924), the BULL DOG wrench jaw appears to match the design in this patent. Mull was not mentioned in news items announcing formation of the BULL DOG WRENCH Co.
This is one of 65,164 patents currently in the database at datamp.org

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US Patent: 2,874,985

June 21, 2020 - 11:54am
Drill chuck and spindle connection Patentee: Clifton J. March - Phoenix MD Granted:1959-02-24

This patent number was seen on a Black & Decker No. 655 3/4-inch mag drill.
This is one of 65,154 patents currently in the database at datamp.org

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US Patent: 3,001,558

June 20, 2020 - 11:50am
Interchangeable wood cutter head Patentee: William W. Showler - Greensboro NC Granted:1961-09-26

This patent covers "hub mounted molder and shaper heads used in the furniture industry". See also Canada patent CA-643,022. The Concentro Service Corp. manufactured planer cutterheads that were apparently based on this invention. The cutterheads are made in segments, and each segment has a carbide knife permanently attached. This type of cutterhead can go a very long time between sharpening, but to sharpen it the head must be removed from the machine, which probably explains why very few such heads have survived. They do appear to have worked very well in use other than the sharpening hassles.
This is one of 65,148 patents currently in the database at datamp.org

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GB Patent: 189,501,903

June 19, 2020 - 11:44am
Improvements in or Applicable to Injectors for Raising and Forcing Fluids. Patentees: James Gresham - Salford, Lancashire County England , George Kiernan - Salford, Lancashire County England Granted:1895-11-30


This is one of 65,141 patents currently in the database at datamp.org

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CA Patent: 828,282

June 18, 2020 - 11:44am
High speed liquid cooled motors Patentee: Russell I. Robinson - Thiensville WI Granted:1969-11-25

This is the Canadian equivalent of US patent 3,479,541.
This is one of 65,139 patents currently in the database at datamp.org

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CA Patent: 461,965

June 17, 2020 - 11:32am
Lathe machine Patentee: Frederick R. Francis - Billings Bridge ON Canada Granted:1949-12-27

See also US patent 2,495,927.
This is one of 65,138 patents currently in the database at datamp.org

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US Patent: 396,361

June 16, 2020 - 11:28am
Rolling Die Machine Patentee: William H. Johnson - Racine, Racine County WI Granted:1889-01-15


This is one of 65,136 patents currently in the database at datamp.org

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