| All Patents in class 72/316 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 31,347 | Feb. 05, 1861 | W.H. Beach | Improved Machine for Swaging Sheet Metal |
| | 57,045 | Aug. 07, 1866 | R. Lyon | Making Rivets |
| | 178,967 | Jun. 20, 1876 | W. Sellers | Hydraulic Apparatus for Holding Bars of Iron Against the Pressure Required to Upset Them |
 | 1,253,553 | Jan. 15, 1918 | B.F. Winterhoff | Apparatus for smoothing and calibrating tapered and curved hollow metal bodies, such as bows for wind instruments |
| | 1,795,358 | Mar. 10, 1931 | W.E. Arndt | Tool for spinning angular flanges on metal tubes |
| | 2,797,799 | Jul. 02, 1957 | W.A. Ehlert | Apparatus for Drawing Wire and Operating Thereon |
| | 2,840,381 | Jun. 24, 1958 | L.D. Mersek | Wire Gripping Mechanism |
| | 3,184,943 | May 25, 1965 | B.F. Ware | Wire Shaping and Drawing |
