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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3,522,871
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May. 10, 1973
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Lathe
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Harold William Clisby |
, Australia |
The patent covers a method of building smaller lathes that provides the required accuracy but is simpler and less expensive to build. The main innovation is a bed extruded from, e.g., nickel silver (an alloy of nickel and copper). The headstock and tailstock may also be extruded. The choice of extrusion material is claimed to provide the required accuracy. "The inverted dovetailed cross-slide and ways are also extruded material. If the extruded material is manganese bronze, it may, if so desired, be plated with chromium to produce a hard scuff resisting surface; if it is an extruded aluminum alloy, its surface may be deep anodised to hard it, and subsequently polished (this being desirable because of the abrasive properties of aluminum alloy)." Besides the use of extrusions, another cost-cutting improvement is a planetary gearing system. |
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6,398,123
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Jun. 04, 2002
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Railway fastening anchor and clip
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Harold W. Clisby |
, Australia |
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Railway fastening anchor and clip
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Orville L. Clisby |
, Australia |
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