| All Patents in class 474 |
Patents 391 -
405
of 580
      |
| Number | Date | Patentee | Title | Type |
| 1,662,660 | Mar. 13, 1928 | H.C. Clay | Controller for Variable Speed Transmission | industrial machine speed and direction changing mechanisms |
| 1,666,135 | Apr. 17, 1928 | L.S. Hall | Belt-tensioning device for threading machines and the like | pipe threading machines |
| 1,670,139 | May 15, 1928 | F.B. Cockburn | Lathe | metal lathe mechanisms |
| 1,671,048 | May 22, 1928 | P.B. Reeves | Belt fastener | industrial machine pulleys and belt drive mechanisms |
| 1,690,111 | Nov. 06, 1928 | L.R. Heston, A.L. Anderson | Sawing machine | circular crosscut saws |
| 1,690,145 | Nov. 06, 1928 | W.O. Vivarttas | Molding machine | molders |
| 1,708,672 | Apr. 09, 1929 | E.J. Hornberger | Motor drive for lathes | metal lathes |
| 1,723,077 | Aug. 06, 1929 | J.A. Richards | Circular-saw structure | tablesaws |
| 1,731,599 | Oct. 15, 1929 | C.E. Tannewitz | Band-saw wheel | bandsaws |
| 1,740,810 | Dec. 24, 1929 | D.P. Davies | Tractor | tractors |
| 1,761,155 | Jun. 03, 1930 | P.B. Reeves | Belt splice | industrial machine pulleys and belt drive mechanisms |
| 1,765,402 | Jun. 24, 1930 | A.G. Carter | Wheel or pulley for band saws | bandsaws |
| 1,765,403 | Jun. 24, 1930 | A.G. Carter | Wheel or pulley for band saws | bandsaws |
| 1,785,055 | Dec. 16, 1930 | N.A. Strand | Driving Mechanism | polishing and buffing machinery |
| 1,795,313 | Mar. 10, 1931 | J.D. Nies | Electric-motor support | electric motors |
