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.
|
186,602,001
|
Aug. 02, 1866
|
Machine for cutting dovetail joints
|
Samuel Thomas Armstrong |
New York, NY |
This novel and important invention uses helical saw blades attached to cutter blocks that rotate about 150 RPM to cut pins and tails. The dovetails could be through, half-blind or even full-bind. The machine's design demanded precise and heavy construction but the result was a dovetail more precisely cut than any previous machine-cut dovetails. We have not been able to find an equivalent US patent. In any event, the machine was a sensation at the Paris Exhibition of 1867. That machine was built by Thomas Robinson & Son of England and demonstrated by Mr. Armstrong himself. Robinson also imported the machines into the US and Canada. |
|
141,642
|
Apr. 22, 1920
|
Improvements in circular saw benches
|
Charles John Robinson |
, England |
This patent covers a method of reducing spindle over-hang, and is shown in a T. Robinson & Son catalog cut from about 1930; benches without the patent mechanism were also available, at lower cost. Of the patent versions it says, "These saw benches are one of Robinson's best known manufactures..." |