Davis & Thompson Co. - Assigned Patents

Manufacturers Index - Davis & Thompson Co.

Davis & Thompson Co.
Milwaukee, WI, U.S.A.
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
1,213,340	Jan. 23, 1917	Gas-engine	Frank M. Davis	Milwaukee, WI
1,279,286	Sep. 17, 1918	Duplex Milling Machine	Frank M. Davis	Milwaukee, Milwaukee County, WI	R. S. C. Caldwell - patent attorney
1,366,770	Jan. 25, 1921	Gearing	Frank M. Davis	Milwaukee, WI	"The object of the invention is to provide a simple and effective means for taking up the back-lash on worm gearing and is particularly useful on machines where accurate work is done."
1,376,861	May. 03, 1921	Universal duplex milling-machine	Frank M. Davis	Milwaukee, WI	"This invention relates to duplex milling machines operating simultaneously on opposite faces of the work as the latter is carried between the cutters on a rotating table, and has for its object to provide such a machine adapted for universal use or for the varying requirements of large machine shops engaged in quantity production of parts of different sizes and shapes."
1,415,530	May. 09, 1922	Feeding and clamping means for metal-working machines	Frank M. Davis	Milwaukee, WI
1,545,744	Jul. 14, 1925	Milling Machine	Frank A. Davis	Milwaukee, Milwaukee County, WI	Claim: In a milling machine, the combination of a frame, a housing mounted thereon, a rotating work mandrel journaled in said housing, a rotating spindle journaled in said housing, the housing having an integral bridge section between the mandrel and spindle whereby the spindle's center is fixed with relation to the center of. said work mandrel, and a milling cutter on said spindle operable upon the work carried by said mandrel.
1,782,138	Nov. 18, 1930	Continuously-operating multiple lathe	Albert C. Hoeh	Pontiac, MI
		Continuously-operating multiple lathe	Frank M. Davis	Milwaukee, WI
1,877,560	Sep. 13, 1932	Vertical Continuous Milling Machine	Frank M. Davis	Milwaukee, Milwaukee County, WI	Claim: A vertical continuous milling machine, comprising a vertical standard, a tool carrier journaled thereon and having a plurality of circumferentially spaced and vertically movable spindles, tool shafts rotated by the spindles and extending at an angle thereto, workholding means turning with the carrier, guide means for said tool shafts coacting with* said workholding means, means for moving the tool shafts towards and away from the work in successive order as the carrier revolves around the standard, milling cutters carried by the tool shafts, and means for rotating the spindles.
2,033,686	Mar. 10, 1936	Multiple operation machine	Frank M. Davis	Milwaukee, WI
2,065,173	Dec. 22, 1936	Milling machine spindle mounting	Frank M. Davis	Milwaukee, WI
2,203,943	Jun. 11, 1940	Machine tool spindle mounting	Frank M. Davis	Milwaukee, WI
2,364,884	Dec. 12, 1944	Work clamping means for machine tools	William H. Weimer	North Prairie, WI	Invention improves on a band clamp used to hold the work on a milling and drilling machine; the improvements include providing a wide range, to minimize pressure variations, and a simpler release mechanism, among other improvements.
429,985	Sep. 11, 1945	Machine tool work clamping means	William H. Weimer	North Prairie, WI
2,424,524	Jul. 22, 1947	Boring machine	William H. Weimer	North Prairie, WI	This invention allows the boring machine to bore a hole of non-circular cross-section. For example, a tubular workpiece with a longitudinal welded joint may have a bore with a flattened portion at the joint to provide extra wall thickness there. This boring machine can also vary the boring diameter along the length of the bore.
2,529,205	Nov. 07, 1950	Machine tool chuck	William H. Weimer	North Prairie, WI	This chuck is intended for holding cylindrical workpieces, especially tubes, where even pressure is required to firmly clamp without distorting the workpiece.
2,568,136	Sep. 18, 1951	Engine starter	William H. Weimer	North Prairie, WI	The inventor was president of machine-tool maker Davis & Thompson Co. It is not know why he patented an engine starter for a company, the Air Diesel Engine Corp., 300 miles distant from him. The only mentions of the assignee we could find anywhere on the Internet were in relation to this patent.
2,697,952	Dec. 28, 1954	Continuously operating machine tool	Gerhold L. Otto	Menomonee Falls, WI
2,699,856	Jan. 18, 1955	Overload release clutch	Walter L. McCann	West Allis, WI
2,701,482	Feb. 08, 1955	Milling and center-drilling machine	Gerhold L. Otto	Menomonee Falls, WI	This is a combined machine for milling and center-drilling a workpiece such as a shaft of some kind.