| All Patents in class 74/473.1 |
Patents 16 -
26
of 26
      |
| Number | Date | Patentee | Title | Type |
| 2,056,792 | Oct. 06, 1936 | J.E. Lovely | Lathe and the like Speed Control Mechanism | metalworking speed changing mechanisms |
| 2,077,730 | Apr. 20, 1937 | W.F. Zimmermann | Balanced Helicoidal Change Speed Drive for Shapers | metal shapers |
| 2,106,731 | Feb. 01, 1938 | K.F. Gallimore | Speed Change Mechanism | metalworking speed changing mechanisms |
| 2,149,013 | Feb. 28, 1939 | F.A. Fritzsch | Speed Changing Mechanism | metalworking speed changing mechanisms |
| 2,269,290 | Jan. 06, 1942 | G.H. Schurger | Speed Change Mechanism | metalworking speed changing mechanisms |
| 2,377,305 | Jun. 05, 1945 | C.A. Bickel | Gear change mechanism for lathes | metal lathes |
| 2,475,665 | Jul. 12, 1949 | W.G. Hoelscher | Drill Spindle Driving Mechanism | metalworking power transmission |
| 2,523,397 | Sep. 26, 1950 | G.J. Kasselmann, H.J. Siekmann | Change Speed Gearing for Lathe Headstocks | industrial machine gearing |
| 2,630,718 | Mar. 10, 1953 | F.D. Dickas | Variable-speed mechanism | |
| 3,274,842 | Sep. 27, 1966 | R.J. Huff | Lathe Transmission Mechanism | engine lathes |
| 4,208,930 | Jun. 24, 1980 | O. Hermann | Spindle Control Mechanism | machine tool controls |
