| 摘要 |
1,022,518. Motor vehicle driving gears. NEW YORK AIR BRAKE CO. Dec. 4, 1964 [Dec. 11, 1963], No. 49346/64. Heading B7H. [Also in Division F2] In a tractor having endless tracks 1, 1<SP>1</SP> independently driven from engines 4, 4<SP>1</SP> through change-speed gears 5, 5<SP>1</SP>, bevel gears 7, 8; 7<SP>1</SP>, 8<SP>1</SP>, shafts 6, 6<SP>1</SP>, clutches 9, 91 and sprockets 2, 2<SP>1</SP>, a hydrostatic transmission 12, 12<SP>1</SP> is connected between the shafts 6, 6<SP>1</SP> so that during steering effected by disengaging one of the clutches 9, 9<SP>1</SP> and engaging an associated brake 11 or 11<SP>1</SP> power is transmitted from the engine associated with the braked track to the other track. The hydrostatic transmission may be rendered inoperative by movement of a lever 53. Steering may also be effected by selecting different ratios in the change-speed gears 5, 5<SP>1</SP> and/or different throttle settings for the two engines 4, 4<SP>1</SP>. |
