American Broach & Machine Co. - Assigned Patents

Manufacturers Index - American Broach & Machine Co.

American Broach & Machine Co.
Ann Arbor, MI, U.S.A.
Company Website: http://www.americanbroach.com
Manufacturer Class: Metal Working Machinery

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
1,339,656	May. 11, 1920	Cutter-bar and bushing therefor	Francis J. Lapointe	Ann Arbor, MI
1,339,657	May. 11, 1920	Finishing-broach	Francis J. Lapointe	Ann Arbor, MI
1,376,708	May. 03, 1921	Broaching-machine	Francis J. Lapointe	Ann Arbor, MI
1,376,709	May. 03, 1921	Spline-finishing broach	Francis J. Lapointe	Ann Arbor, MI	"This invention...has for its object the provision of means whereby, in a single operation, the central opening in the work being operated upon will be made concentric with the outer ends of the spline cut therein."
1,421,014	Jun. 27, 1922	Attachment for broaching machines	Francis J. Lapointe	Ann Arbor, MI	"This invention relates to broaching machines and has for its object the provision of a machine of this character particularly adapted to form aligned holes in bifurcated members such for instance as the two parts of a universal joint."
1,434,711	Nov. 07, 1922	Manually-operated broaching machine	Francis J. Lapointe	Ann Arbor, MI	"This invention... has for its object the provision of an inexpensive device of this character particularly adapted for use in service stations and garages for the purpose of broaching out the worn holes in pistons to receive oversize piston pins and also to form new bearings in the larger ends of connecting rods."
1,463,473	Jul. 31, 1923	Broaching tool	Francis J. Lapointe	Ann Arbor, MI
1,492,252	Apr. 29, 1924	Broaching tool	Francis J. Lapointe	Ann Arbor, MI
1,551,036	Aug. 25, 1925	Broaching tool	Francis J. Lapointe	Ann Arbor, MI
1,569,862	Jan. 19, 1926	Broaching machine	Francis J. Lapointe	Ann Arbor, MI
1,687,369	Oct. 09, 1928	Hydraulic broaching machine	Francis J. Lapointe	Ann Arbor, MI
1,724,669	Aug. 13, 1929	Adjustable finishing end for broaches	Francis J. Lapointe	Ann Arbor, MI
1,781,114	Nov. 11, 1930	Hydraulic broaching machine	Francis J. Lapointe	Ann Arbor, MI	"The invention relates to broaching machines and particular to machines of this character which are of the pull type and actuated by hydraulic means, the object of the invention being the production of a machine of this class which will be semi-automatic dispensing with the handling of the broach by the operator during the broaching operation."
1,806,106	May. 19, 1931	Vertical pull broaching machine	Francis J. Lapointe	Ann Arbor, MI
1,855,766	Apr. 26, 1932	Broaching machine	Francis J. Lapointe	Ann Arbor, MI
1,875,033	Aug. 30, 1932	Broaching machines	Francis J. Lapointe	Ann Arbor, MI
1,929,593	Oct. 10, 1933	Hydraulic screw broaching machine	Francis J. Lapointe	Ann Arbor, MI
1,984,974	Dec. 18, 1934	Broaching machine	Francis J. Lapointe	Ann Arbor, MI
2,041,551	May. 19, 1936	Surface broach	Francis J. Lapointe	Ann Arbor, MI
2,079,692	May. 11, 1937	Broach shank connector	Francis J. Lapointe	Ann Arbor, MI
2,089,753	Aug. 10, 1937	Broaching machine	Francis J. Lapointe	Ann Arbor, MI
2,148,241	Feb. 21, 1939	Broaching machine	Francis J. Lapointe	Ann Arbor, MI	Sundstrand Machine Tool Co. acquired American Broach & Machine Co. in 1936; we presume that the machine of this patent was made by American Broach even though the patent was assigned to Sundstrand.
2,199,343	Apr. 30, 1940	Method of reclaiming broach tools	Elmer J. Lapointe	Ann Arbor, MI	When the finishing teeth on a broaching cutter are sufficiently worn, the hole cut by the broach falls below spec and the broach must normally be replaced. This invention involves boring a tapered hole in the end of the broach, inside the finishing teeth, heating up the broach and then permanently inserting a chilled tapered pain into the hole. This can expand the end of the broach by 0.002 or more inches, which allows the broach to be sharpened while maintaining spec.
2,255,221	Sep. 09, 1941	Method and means for surface broaching	Francis J. Lapointe	Ann Arbor, MI
2,263,390	Nov. 18, 1941	Broach handling mechanism	Francis J. Lapointe	Ann Arbor, MI
2,264,538	Dec. 02, 1941	Broaching machine	Francis J. Lapointe	Ann Arbor, MI
2,343,420	Mar. 07, 1944	Broaching machine	John W. Podesta	Ann Arbor, MI
2,392,747	Jan. 08, 1946	Pull head for broaching machines	Francis J. Lapointe	Ann Arbor, MI
2,392,823	Jan. 15, 1946	Broach	Francis J. Lapointe	Ann Arbor, Washtenaw County, MI	Claim: This invention relates to the art of broaching, and it is particularly concerned with a broach comprising a body with multiple cutters mounted thereon.
2,405,961	Aug. 20, 1946	Pull head for broaching machines	Francis J. Lapointe	Ann Arbor, MI
2,408,521	Oct. 01, 1946	Broaching machine	Francis J. Lapointe	Ann Arbor, MI	"One object of the invention is to provide a broaching machine in which a series of broaches is employed in a manner to secure an unusually smooth and accurate results. Another object of the invention is to provide a machine in which a series of broaches is employed to complete a piece of work and in which a rack or support is arranged to travel with the moving element of the machine so as to be conveniently positioned at all times for presenting the broaches when they are wanted for use in the machine, and for receiving the broaches as they are removed therefrom. A further object of the invention is to provide a special arrangement for providing coolant..."
2,571,904	Oct. 16, 1951	Broaching machine	Charles O. Lofgren	Ann Arbor, MI
2,643,585	Jun. 30, 1953	Broaching machine	Elmer J. Lapointe	Ann Arbor, MI
		Broaching machine	Francis J. Lapointe	Ann Arbor, MI