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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CA-276,291
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Dec. 13, 1927
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Broaching machine
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Hiram Dyson Croft |
Springfield, MA |
The patent specification mentions hinge making as an application for which their machine is suited. |
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Broaching machine
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Julian Leigh Perkins |
West Springfield, MA |
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CA-342,009
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May. 29, 1934
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Gear construction
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Julian Leigh Perkins |
West Springfield, MA |
A pair of bevel gears on a shaft, with the bevels facing toward one another and a hub in between them, is difficult to manufacture in a unitary operation because the hub will be cut into by the tooth-forming operations unless the hub is of substantially smaller diameter than the minor diameter of the bevel gears, and that limitation is objectionable because the resulting part will be weaker than it would otherwise be. The invention, then, is to weld the bevel gears onto a hub after the gear teeth are cut; in this way the outer diameter of the hub is not constrained by the tooth-cutting operation. |
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Gear construction
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Hiram Dyson Croft |
Springfield, MA |
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CA-366,681
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Jun. 08, 1937
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Dough slicing apparatus
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Julian Leigh Perkins |
West Springfield, MA |
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Dough slicing apparatus
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Louis E. Deloghia |
Agawam, MA |
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Dough slicing apparatus
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Hiram Dyson Croft |
Springfield, MA |
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