Wilson Mechanical Instrument Co. - Assigned Patents

Manufacturers Index - Wilson Mechanical Instrument Co.

Wilson Mechanical Instrument Co.
New York, NY, U.S.A.
Manufacturer Class: Metal Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

Submitting Patent Information

If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.

Key to Links for Patent Information

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
1,411,396	Apr. 04, 1922	Electrical-resistance thermometer	Charles H. Wilson	Mount Vernon, NY
		Electrical-resistance thermometer	Cuthbert J. Brown	North Pelham, NY
1,516,207	Nov. 18, 1924	Hardness-testing machine	Stanley P. Rockwell	Syracuse, NY	One of the two patents covering the original and famous Rockwell hardness tester; see also patent 1,516,208. This one is a follow-on to the inventor's patent 1,294,171 and is aimed at making a portable hardness tester.
1,516,208	Nov. 18, 1924	Hardness-testing machine	Stanley P. Rockwell	West Hartford, CT	One of the two patents covering the original and famous Rockwell hardness tester; see also patent 1,516,207. This one is an improvement to the inventor's patent 1,516,207 that is aimed at improving accuracy.
1,571,310	Feb. 02, 1926	Penetrator for testing penetration hardness	Charles H. Wilson	North Pelham, NY	It is not known whether this patent was used, but the inventor had established the Wilson Mechanical Instrument Co., Inc., to manufacture Rockwell hardness testers.
1,690,517	Nov. 06, 1928	Electrical controller and recorder	Charles H. Wilson	North Pelham, NY
		Electrical controller and recorder	Cuthbert J. Brown	North Pelham, NY
1,762,497	Jun. 10, 1930	Automatic hardness tester	Charles H. Wilson	Pelham, NY	Improvements to Stanley P. Rockwell's patents 1,516,207 and 1,516,208.
1,762,498	Jun. 10, 1930	Hardness-testing method and apparatus	Charles H. Wilson	Pelham, NY	Improvements to the inventor's patent 1,762,497.
1,885,972	Nov. 01, 1932	Hardness testing gauge	Charles H. Wilson	Pelham, NY	Improvements to the Rockwell hardness tester, patents 1,516,207 and 1,516,208, intended to reduce friction as a confounding factor that led to inaccurate measurements.
1,890,923	Dec. 13, 1932	Test piece support for hardness testers	Charles H. Wilson	Pelham, NY	It is not known whether this patent was used, but the inventor had established the Wilson Mechanical Instrument Co., Inc., to manufacture Rockwell hardness testers.
CA-336,012	Sep. 26, 1933	Hardness tester	Charles H. Wilson	Pelham, NY	Canadian equivalent of US patent 1,885,972, which covers improvements to the Rockwell hardness tester.
2,091,995	Sep. 07, 1937	Hardness testing device	Frederick Knoop	Washington, DC	See patent 2,722,853 for an improvement to this patent. A 1957 brochure for the Tukon Tester from the Wilson Instrument Division of the American Chain & Cable Co., Inc., mentions "The Knoop Indenter (U. S. Patent No. 201995 under which we hold license)..."
CA-395,516	Mar. 25, 1941	Hardness testing device	Charles H. Wilson	Pelham, NY
2,361,441	Oct. 31, 1944	Hardness testing indenter	Charles H. Wilson	Pelham, NY	This hardness testing tip is intended for testing very hard and thin materials such as chrome plating.
2,362,941	Nov. 14, 1944	Penetrator chuck retainer	David F. Sklar	Brooklyn, NY	Improvements to a portion of patent 1,885,972.
2,722,831	Nov. 08, 1955	Hardness testers	Charles W. Smith	Stratford, CT	This patent number was seen in a sales brochure for the "Tukon Tester" from the Wilson Mechanical Instrument Division, American Chain & Cable Co., Inc. The patent specification notes, "In U. S. Patent No. 2,091,995 there is described an indenter which is in the form of a pyramid with two greatly elongated edges, which produces as impression, as viewed with the microscope, of a rhombus with one diagonal much longer than the other..." This present patent provides improvements on that predecessor patent. One improvement is intended to reduce vibration during contact of specimen and indenter, and another improvement is to place the specimen in proper position for testing by the act of focusing the microscope on the specimen.