| All Patents in class 470/141 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 27,943 | Apr. 17, 1860 | H. Abbott | Bolt Heading Machine |
 | 88,214 | Mar. 23, 1869 | J. Root | Improved bolt-heading machine |
 | 133,135 | Nov. 19, 1872 | A.A. Wilder | Improvement in bolt-machines |
 | 317,642 | May 12, 1885 | J. Young, C. Hall | Bolt-machine |
| | 1,004,247 | Sep. 26, 1911 | E.W. Duston | Ejecting mechanism for heading-machines |
| | 1,026,082 | May 14, 1912 | E.W. Duston | Heading mechanism |
| | 1,111,729 | Sep. 29, 1914 | J.R. Blakeslee | Bolt Heading Machine |
| | 1,718,987 | Jul. 02, 1929 | J.W. Smith | Reciprocating Tool Holder of Metal Working Machines |
| | 2,797,799 | Jul. 02, 1957 | W.A. Ehlert | Apparatus for Drawing Wire and Operating Thereon |
