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.
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1,288,324
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Dec. 17, 1918
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Chuck
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David Weir |
Hartford, CT |
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1,370,598
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Mar. 08, 1921
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Chuck
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Donald H. Lapointe |
Hartford, Hartford County, CT |
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2,144,486
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Jan. 17, 1939
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Locating Device
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Edmund M. Erb |
West Hartford, Hartford County, CT |
Also patented in Great Britain, patent #501631. |
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501,631
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Mar. 02, 1939
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Improvements in Indexing Devices for Chucks and Other Work Holders
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Edmund M. Erb |
West Hartford, Hartford County, CT |
See U. S. Patent #2,144,486.
Abstract:
A work holder 31 is secured to a member 27 for rotation in abase 11 located in a machine by keys 18. An indexing disc 45, with evenly spaced peripheral slots, is secured to the member 27 by studs 44 and is locked by a slide 50 mounted in the base and engaging the slots A masking disc 73 with peripheral slots arranged for a particular sequence of operations is secured to the disc 45 by a pin 74 and cover plate 80 with slots of both discs in register. The slide 50 co-operates with both discs and locks the work holder' when the slots of disc 45 are unmasked by the slots of disc 73. The work holder is locked by a two-part brake 91. |
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2,779,220
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Jan. 29, 1957
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Universal Drilling Machine
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Raymond J. Dunn Jr. |
West Hartford, Hartford County, CT |
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Universal Drilling Machine
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Oscar L. Wright Jr. |
Grandby, Hartford County, CT |
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