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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1,089,152
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Mar. 03, 1914
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Belt-shifter
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Arthur C. Pletz |
Cincinnati, OH |
Shortly after this patent was issued the inventor left his job at Aurora Tool Works to start his own business manufacturing machine tools. Within a couple of years he was the general manager of the Morris Machine Tool Co., and it is possible that this invention was used by them although that remains unconfirmed. During the period 1920 to 1923 he was on of the Sons in Carl Pletz & Sons which manufactured a 9-inch shaper. |
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1,213,253
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Jan. 23, 1917
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Tapping or thread-cutting device
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Arthur C. Pletz |
Cincinnati, OH |
The inventor was one of the "Sons" of metalworking machinery maker Carl Pletz & Sons, and he was also the general manager of the Morris Machine Tool Co. |
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1,307,831
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Jun. 24, 1919
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Drilling and tapping machine
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Arthur C. Pletz |
Cincinnati, OH |
The inventor was the general manager of the Morris Machine Tool Co., and it is possible that this invention was used by them although that remains unconfirmed. During the period 1920 to 1923 he was one of the Sons in Carl Pletz & Sons which manufactured a 9-inch shaper. |