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

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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
1,640,900 Aug. 30, 1927 Short circuiter Everett P. Larsh Dayton, OH
1,678,517 Jul. 24, 1928 Short circuiting device for motor commutators Everett P. Larsh Dayton, OH
1,685,549 Sep. 25, 1928 Short circuiter Everett P. Larsh Dayton, OH
1,699,792 Jan. 22, 1929 Quick-acting switch Everett P. Larsh Dayton, OH
1,723,360 Aug. 06, 1929 Pump Everett P. Larsh Dayton, OH
1,735,579 Nov. 12, 1929 Short-circuiting device for motor commutators Everett P. Larsh Dayton, OH
1,779,006 Oct. 21, 1930 Short circuiter Everett P. Larsh Dayton, OH
1,792,645 Feb. 17, 1931 Armature bearing for electric motors Everett P. Larsh Dayton, OH
RE18,093 Jun. 09, 1931 Short circuiting device for motor commutators Everett P. Larsh Dayton, OH
1,895,288 Jan. 24, 1933 Bearing mounting Everett P. Larsh Dayton, OH
1,896,869 Feb. 07, 1933 Electric fan Everett P. Larsh Vandalia, OH
1,939,399 Dec. 12, 1933 Electric fan Everett P. Larsh Vandalia, OH
1,950,675 Mar. 13, 1934 Friction gear for stepless changing the rotation of a driven shaft David Hans Heynau , Germany This patent number was seen on a "Speed Ranger" variable speed motor unit from Master Electric Co., along with patents 2,032,015 and 2,199,491.
1,983,091 Dec. 04, 1934 Electrodynamic machine Everett P. Larsh Vandalia, OH This invention varies the speed of an induction motor by varying the "slippage", which can be achieved by a device on the stator that is adjusted to increase magnetic leakage.
1,993,449 Mar. 05, 1935 Electric motor Everett P. Larsh Vandalia, OH
2,011,493 Aug. 13, 1935 Self aligning bearing Everett P. Larsh Dayton, OH
2,032,015 Feb. 25, 1936 Friction gear transmission David Hans Heynau , England This patent number was seen on a "Speed Ranger" variable speed motor unit from Master Electric Co., along with patents 1,950,675 and 2,199,491.
2,068,992 Jan. 26, 1937 Vibrating machine Everett P. Larsh Dayton, OH This patent number was seen on a floor sander from American Floor Surfacing Machine Co. The motor used in that sander was manufactured by Peerless Electric Co. of Warren, Ohio.
2,074,067 Mar. 16, 1937 Ventilated splashproof motor housing Victor L. Darnell Dayton, OH
2,100,426 Nov. 30, 1937 Electric series-parallel switch Max Voege Dayton, OH
    Electric series-parallel switch Arthur F. Berger Dayton, OH  
2,116,708 May. 10, 1938 Apparatus for compacting concrete Richard A. Niekamp Dayton, OH
2,199,491 May. 07, 1940 Friction gear transmission David Hans Heynau Cincinnati, OH Improvements to the variable-speed transmission of patent 2,032,015 to improve its rigidity and eliminate slippage. Both of these patent numbers were seen on a "Speed Ranger" variable speed motor unit from Master Electric Co., along with patent 1,950,675.
2,261,477 Nov. 04, 1941 Electric motor William H. Kuner Vandalia, OH "This invention pertains... more particularly to an elongated motor assembly of relatively small diameter, adapted for insertion in well casings and other restricted spaces."
2,295,203 Sep. 08, 1942 Field ring Victor L. Darnell Dayton, OH The innovation in this patent is the use of a sheet metal housing with cast end bells, where the field laminations are press or shrink fit and punching, spinning or welding are used to create "abutments" for locating brush rings.
2,300,838 Nov. 03, 1942 Stoker motor control Carl H. Dicke Dayton, OH
2,320,379 Jun. 01, 1943 Electric motor gearing Richard A. Niekamp Dayton, OH
2,381,914 Aug. 14, 1945 Motor housing Victor L. Darnell Dayton, OH
    Motor housing Jerome Leflar Dayton, OH  
2,385,369 Sep. 25, 1945 Shaft coupling Richard A. Niekamp Dayton, OH
2,499,390 Mar. 07, 1950 Rotor for alternating current Henry M. Joy Dayton, OH
2,502,463 Apr. 04, 1950 Short circuiter for repulsion-induction electric motors Jerome Leflar Dayton, OH
2,586,867 Feb. 26, 1952 Governor Frederick E. Smith Dayton, OH
    Governor Orland L. R. Schram Dayton, OH  
D169,488 May. 05, 1953 Gearhead motor Robert L. Wolfe Springfield, OH
    Gearhead motor William H. Kuner Dayton, OH  
    Gearhead motor Anthony G. Horvath Dayton, OH  
D169,489 May. 05, 1953 Right angle gearhead motor Robert L. Wolfe Springfield, OH
    Right angle gearhead motor William H. Kuner Dayton, OH  
    Right angle gearhead motor Anthony G. Horvath Dayton, OH  
2,643,357 Jun. 23, 1953 Instantly reversible motor Loris D. Clark Dayton, OH
2,744,202 May. 01, 1956 Motor Robert L. Wolfe Springfield, OH
    Motor William H. Kuner Dayton, OH  
    Motor Anthony G. Horvath Dayton, OH