| All Patents in class 414/431 | 
| Patents 1 - 
					8
					of 8 
       | 
| Number | Date | Patentee | Title | Type | 
| 441,411 | Nov. 25, 1890 | J. Hartness | Stock Feeding Device for Screw Machines | workpiece changers and storage mechanisms | 
| 629,161 | Jul. 18, 1899 | J. Hartness | Stock Feeding Mechanism for Screw Machines | workpiece changers and storage mechanisms | 
| 641,040 | Jan. 09, 1900 | C.G. Richardson | Rod Feeding Device | workpiece changers and storage mechanisms | 
| 711,851 | Oct. 21, 1902 | B.M. Hanson | Feed  Mechanism for Metal Working Machines | screw machines | 
| 711,852 | Oct. 21, 1902 | B.M. Hanson | Feed  Mechanism for Metal Working Machines | screw machines | 
| 739,866 | Sep. 29, 1903 | J. Hartness | Turret Lathe | turret lathes | 
| 791,544 | Jun. 06, 1905 | W.S. Davenport | Feed Mechanism |  | 
| 3,038,587 | Jun. 12, 1962 | G.A. Bilocq | Log conveying apparatus | sawmill log handling |