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Manufacturers Index - Heinrich Co.
Patents
This page contains information on patents issued to this manufacturer.

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USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
1,647,622 Nov. 01, 1927 Metal shears Paul Kramer Racine, WI
    Metal shears Robert Heinrich Racine, WI  
1,831,447 Nov. 10, 1931 Metal cutting instrument Robert Heinrich Racine, WI "This invention relates to improvements in metal cutting instruments and more particularly to a rod cutting attachment for metal shears such as illustrated in (1,647,622)."
1,971,069 Aug. 21, 1934 Vise for shapers Robert Heinrich Racine, WI
2,362,067 Nov. 07, 1944 Quick-adjustable vise Robert O. Heinrich Racine, WI One of the key features of this vise is that the sliding bars carrying the movable jaw are stacked vertically rather than horizontally, which provides more space for holding a long workpiece vertically.
This patent number is listed in an undated catalog from Heinrich Tools Inc. The Model 14 Production Bench Vise has the key features of this patent.
2,392,820 Jan. 15, 1946 Vise lock Robert O. Heinrich Racine, WI This patent is a companion to patent 2,362,067; see that patent for more information.
2,424,313 Jul. 22, 1947 Quick locking vise Robert O. Heinrich Racine, WI
2,612,805 Oct. 07, 1952 Locking plate adjusting means for vise beams Robert O. Heinrich Racine, WI Improvements to the means for advancing, locking, and retracting the sliding jaw of the vises of patents 2,362,067, 2,392,820, and 2,424,313.
2,638,804 May. 19, 1953 Actuating means for advancing and locking jaws of vises and like fixtures Robert O. Heinrich Racine, WI Improvements to patent 2,424,313.
2,679,177 May. 25, 1954 Precision vise of the double-acting type Franklin Gahl Gepfert Cleveland, OH The invention is a hydraulic or pneumatic vise where each jaw is moved by its own cylinder. The action of the two jaws are cross-linked so that they move in a synchronized way.
2,764,046 Sep. 25, 1956 Initial adjusting mechanism for gripping members Robert O. Heinrich Racine, WI The invention is a pneumatic vise with one movable jaw, and the innovation is a mechanism to adjust the range of motion of the jaw.
2,994,538 Aug. 01, 1961 Collet chuck having an axially stationary collet Lawrence Farnsworth Racine, WI
2,998,259 Aug. 29, 1961 Collet and chuck therefor Lawrence Farnsworth Racine, WI Improvements to patent 2,994,538.
3,143,356 Aug. 04, 1964 Powerhead Percy E. Pray Minneapolis, MN The invention is a pneumatically operated collet closer, though the patent specification does not use "collet" in its description of the invention.