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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191,325,122
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Mar. 12, 1914
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Improvements in endless band grinding and polishing machines
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Charles Ralph Townsend |
, England |
The idea is an adjustable work-rest that runs across the horizontal platen and the vertical angle can be adjusted via a hinged connection on either side of the platen. |
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Improvements in endless band grinding and polishing machines
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Robert Charles Turner |
, England |
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191,315,805
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Apr. 23, 1914
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Improved endless-band grinding and polishing machine
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Charles Ralph Townsend |
, England |
Co-inventors Townsend and Turner were partners in Townsend & Co. of Birmingham. Their invention is a means of mounting one of the drums or rollers so that it can be adjusted to vary spacing between the drums. |
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Improved endless-band grinding and polishing machine
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Robert Charles Turner |
, England |
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191,400,494
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Oct. 15, 1914
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Endless band grinding or polishing machines
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Charles Ralph Townsend |
, England |
The innovation is an improved tracking adjustment mechanism. |
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Endless band grinding or polishing machines
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Robert Charles Turner |
, England |
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105,276
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Apr. 12, 1917
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Improvements in endless band grinding and polishing machines
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Charles Ralph Townsend |
, England |
Patent covers the use of a weighted belt tensioning mechanism. |
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106,337
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May. 23, 1917
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Improvements in endless band grinding and polishing machines
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Charles Ralph Townsend |
, England |
Belt sander where the platen ("table") can be adjusted laterally so that its edge is aligned with the edge of the belt. The flat platen can be swapped with one having a convex surface for grinding curved surfaces, and likewise a worn platen can easily be replaced. |