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Manufacturers Index - R. H. St. John
Patents
This page contains information on patents issued to this manufacturer.

Submitting Patent Information

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.

Patent Number Date Title Name City Description
18,213 Sep. 15, 1857 Watchmakers' lathe Roswell H. St. John Bellefontaine, OH
19,468 Feb. 23, 1858 Improvement in the manner of attaching legs to walking locomotives Solomon G. Hoge Bellefontaine, OH Just a few months before this patent was issued, co-assignee St. John had been granted a patent for a watchmaker's lathe, reportedly the first foot-power watchmaker's chucking lathe, which he manufactured for a few years.
23,406 Mar. 29, 1859 Watchmakers Lathe R. H. St. John Bellefontaine, Logan County, OH
112,978 Mar. 21, 1871 Improvement in hinges for sewing-machines Roswell H. St. John Bellefontaine, OH The inventor had earlier patented and manufactured a jeweler's lathe.
175,197 Mar. 21, 1876 Improvement in wringers Roswell H. St. John Bellefontaine, OH The inventor had earlier patented and manufactured a jeweler's lathe.