Jacobs Manufacturing Co. - Assigned Patents

Manufacturers Index - Jacobs Manufacturing Co.

Jacobs Manufacturing Co.
West Hartford, CT; Clemson, SC, U.S.A.
Company Website: http://www.jacobschuck.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.
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Patent Number	Date	Title	Name	City	Description
709,014	Sep. 16, 1902	Drill-chuck	Arthur I. Jacobs	Hartford, CT	This patent covers the now-famous Jacobs chuck, still in production over 100 years later. "This invention relates to a chuck which has jaws that are movable in recesses inclined to the axis of the body for gripping and releasing the shank of a drill or similar tool. The object of this invention is to construct a strong chuck of this nature with simple, cheap, and convenient means for opening and closing the tool-holding jaws. The body of the chuck that is illustrated as embodying the invention has radial sockets or pins for the reception of the end of a key and rack-teeth on an edge of the nut-sleeve for engagement with gear-teeth on the key, so that when the end of the key is applied to the body and turned the meshing of the gear-teeth and the rack-teeth turn the nut and cause the desired movement of the jaws."
911,012	Jan. 26, 1909	Chuck	Arthur I. Jacobs	Hartford, CT
933,179	Sep. 07, 1909	Chuck	Arthur I. Jacobs	Hartford, CT
1,123,541	Jan. 05, 1915	Chuck	Arthur I. Jacobs	Hartford, CT
1,526,328	Feb. 17, 1925	Chuck	Gustaf A. Englund	West Hartford, CT	Improvements to patent 1,123,541. The innovation is to use "spiral teeth" on the chuck key and sleeve so that as the chuck is tightened the chuck key is drawn inward. This does not seem like a good idea because when loosening the chuck the key would be pushed outward rather than inward.
1,798,234	Mar. 31, 1931	Key holder for tools	Hubert M. Toppin	West Hartford, CT
2,346,706	Apr. 18, 1944	Collet	Arthur Merrick Stoner	West Hartford,Hartford County, CT	E. W. Marshall - patent attorney This patent & patent #2,459,899 are for the Jacobs Rubber-Flex collet system.
2,346,707	Apr. 18, 1944	Collet	Arthur Merrick Stoner	West Hartford, CT	These collets are the "Rubber-Flex Collets" used with the Jacobs Spindle Nose Lathe Chuck of patent 2,346,706.
2,360,908	Oct. 24, 1944	Collet chuck	Arthur Merrick Stoner	West Hartford, CT
2,374,245	Apr. 24, 1945	Collet	Arthur Merrick Stoner	West Hartford, CT
434,490	Apr. 30, 1946	Machine tool collet	Arthur Merrick Stoner	West Hartford, CT
2,403,136	Jul. 02, 1946	Collet	Arthur Merrick Stoner	West Hartford, CT
2,403,768	Jul. 09, 1946	Double-acting collet chuck	Arthur Merrick Stoner	West Hartford, CT
440,664	Apr. 08, 1947	Collet	Arthur Merrick Stoner	West Hartford, CT
440,665	Apr. 08, 1947	Collet	Arthur Merrick Stoner	West Hartford, CT
2,459,899	Jan. 25, 1949	Collet	Arthur Merrick Stoner	West Hartford, Hartford County, CT	This patent & patent #2,346,706 are for the Jacobs Rubber-Flex collet system.
2,459,900	Jan. 25, 1949	Collet	Arthur Merrick Stoner	West Hartford, CT	These collets are the "Rubber-Flex Collets" used with the Jacobs Spindle Nose Lathe Chuck, and is an improvement to patent 2,346,706.
2,466,129	Apr. 05, 1949	Collet chuck	Arthur Merrick Stoner	West Hartford, CT
2,508,731	May. 23, 1950	Lathe chuck	Arthur Merrick Stoner	West Hartford, CT	This patent was used on the Jacobs Spindle Nose Lathe Chuck; see also patent 2,346,706.
D161,552	Jan. 02, 1951	Lathe chuck	Peter Muller-Munk	Pittsburgh, PA	This clever collet-closing lathe chuck was manufactured as the Jacobs Spindle Nose Lathe Chuck. Co-inventor Peter Muller-Munk was a well-known industrial designer who did work for Porter-Cable among many others.
		Lathe chuck	Arthur Merrick Stoner	West Hartford, CT
2,536,519	Jan. 02, 1951	Lathe chuck	Carl Bernhard Brink	West Hartford, CT	This patent was used on the Jacobs Spindle Nose Lathe Chuck; see also patent 2,346,706.
		Lathe chuck	Arthur Merrick Stoner	West Hartford, CT
2,546,351	Mar. 27, 1951	Toggle-acting collet	Arthur Merrick Stoner	West Hartford, CT	Improvements to the "Rubber-Flex Collets" used with the Jacobs Spindle Nose Lathe Chuck of patent 2,346,706. See patent 2,584,303 for a subsequent improvement to this collet design.
2,584,303	Feb. 05, 1952	Toggle-acting collet and method of making same	Arthur Merrick Stoner	West Hartford, CT	These collets are the "Rubber-Flex Collets" used with the Jacobs Spindle Nose Lathe Chuck, and is an improvement to patent 2,546,351.
2,746,758	May. 22, 1956	Chucks	Arthur M. Stoner	Madison, New Haven County, CT	This patent is an evolution of the Rubber-Flex collet system that reduces friction in that system by adding long metal fingers to engage the jaws of the collet.
		Chucks	Girard S. Haviland	Wethersfield, Hartford County, CT
2,816,768	Dec. 17, 1957	Lever operated collet chuck	Girard S. Haviland	Wethersfield, CT
		Lever operated collet chuck	Arthur Merrick Stoner	West Hartford, CT
563,364	Sep. 16, 1958	Lever operated collet chuck	Girard S. Haviland	Wethersfield, CT
		Lever operated collet chuck	Arthur Merrick Stoner	West Hartford, CT
2,985,456	May. 23, 1961	Multiple-screw actuated collet chuck	Arthur Merrick Stoner	West Hartford, CT
3,044,790	Jul. 17, 1962	Chuck and operating key with enlarged pilot	Arthur M. Stoner	Madison, CT	This patent covers the use of an enlarged pilot hole for the chuck key; the benefit is to be able to skip the hardening of the chuck body, thus reducing cost.
663,552	May. 21, 1963	Multiple-screw actuated collet chuck	Arthur Merrick Stoner	West Hartford, CT