Manufacturers Index - Govro-Nelson Co.
Govro-Nelson Co.
Detroit, MI, U.S.A.
Manufacturer Class:
Metal Working Machinery
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
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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
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DATAMP = Directory of American Tool And
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on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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2,053,514
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Sep. 08, 1936
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Automatic feed head
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Claude E. Broders |
Detroit, MI |
The invention is a centrifugally-operated feed head for milling and drilling operations. The head automatically advances forward while cutting and automatically retracts to its initial position after reaching a pre-determined cutting depth. |
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RE21,341
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Feb. 06, 1940
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Automatic feed head
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Claude E. Broders |
Detroit, MI |
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2,280,115
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Apr. 21, 1942
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Drilling machine
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Claude E. Broders |
Detroit, MI |
The invention is a drilling head that provides automatic feed and return. |
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Drilling machine
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Victor Gauvreau |
Detroit, MI |
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2,426,386
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Aug. 26, 1947
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Automatic feed head
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Claude E. Broders |
Detroit, MI |
The invention is a drilling head that provides automatic feed and return. This invention is an improvement on patents 2,053,514 (reissued as 21,341) and 2,280,115, intended to reduce friction in the mechanism. |
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2,532,207
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Nov. 28, 1950
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Automatic feed head
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George Treglown |
Detroit, MI |
This patent is a counterpart to patent 2,426,386, adapting the ideas of the earlier patent for use in tapping machines. |
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Automatic feed head
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Claude E. Broders |
Detroit, MI |
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2,618,179
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Nov. 18, 1952
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Hydraulic control for drill feeding units
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Claude E. Broders |
Detroit, MI |
This patent is an improvement on patents 2,053,514 (reissued as 21,341) and 2,426,386. The improvement substitutes a hydraulic dash-pot for an air dash-pot, plus a mechanism to automatically bleed air from the mechanism. |
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3,091,137
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May. 28, 1963
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Drilling and tapping machine
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Oril Aronson |
Grosse Pointe, MI |
Mechanism to provide automatic pecking of a drill or tap where the retracting motion is faster than the feeding motion. |
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4,369,956
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Jan. 25, 1983
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Self-centering fixture
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Oril Aronson |
St. Clair, MI |
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