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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1,551,054
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Aug. 25, 1925
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Saw-grinding machine
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John F. Pribnow |
Indianapolis, IN |
"It is the object of my invention to produce an automatic saw-grinder in which the non-grinding intervals between the grinding of successive teeth are materially lessened in length, so that the proportion of actual grinding time to the whole time of the operation is materially increased; in which the travel of the grinding wheel over the teeth may be accurately and easily controlled, and a path-controlling cam may be used which approximates a plane and ordinarily needs but slight adjustment from the plane shape; in which all the necessary adjustments are easily made by devices readily accessible to the operator and in general capable of manipulation which the machine is in operation; and in which the adjustments for tooth-pitch and tooth-height are interrelated, so that they may be properly and easily set for standard dimensions of saws in co-ordination with each other... My present invention is a development of my prior Patent No. 1,179,556..." |
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1,763,065
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Jun. 10, 1930
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Saw-tooth grinder
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John F. Pribnow |
San Diego, CA |
Improvements to patent 1,551,054. |