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.
|
14,844
|
May. 06, 1856
|
Sawmill-dog
|
George W. Hill |
Waverly, NY |
According to the 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office", this patent was granted an extension.
An 1871 Sellew, Adams & Co. catalog says of their "Hill & Lyon's Self Setting Saw Mill Dogs": "We warrant them to increase the product of any mill twenty per cent, over what the same mill is sawing with the ordinary bale dogs... That with one man in a mill they will increase the product of the mill fifteen per cent over any rack and pinion sets in use... Price of sets complete and put into mill $175." |
|
73,031
|
Jan. 07, 1868
|
Improvement in sawmills
|
C. D. Olmstead |
Williamsport, PA |
|