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| All Patents in class 451/258 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 14,950 | May 27, 1856 | W. Clemson | Grinding circular saws | |
 | 27,221 | Feb. 21, 1860 | C.W. Hubbard | Machine for grinding and polishing saws | |
 | 70,788 | Nov. 12, 1867 | T. Birch, A. Sowden | Improvement in grinding machine for circular saws | |
| 259,728 | Jun. 20, 1882 | J.N. Smith | Tool for Dressing Car Wheels and Axles | ||
 | 288,717 | Nov. 20, 1883 | A.W. McIntyre | Machine for Grinding Car Wheels | |
| 2,019,042 | Oct. 29, 1935 | R.G. Anderson, J.Y. Blazek | Arc transferring means | ||