| 摘要 |
1,214,620. Tractor hitches. INTERNATIONAL HARVESTER CO. 18 June, 1969 [17 July, 1968], No. 30765/69. Heading A1P. [Also in Division F2] A speed converter 20 for connection between an implement one speed input 13 and a tractor with a two speed power output 11 comprises a frame (e.g. housing 33) journalling two parallel shafts 37, 42 connected by drive means (e.g. toothed gears 48, 49 or a chain and sprocket assembly) and extending from opposite ends of the frame, the outwardly extending ends 46, 47 of the shafts having interchangeable couplings, the frame being movably mounted (e.g. pivotable about a transverse axis) in a support 31 to interchange the positions of ends 46, 47, so that depending on the speed of the output 11 one shaft 37, 42 when connected thereto (e.g. by a shaft 21) is selected so that the other shaft 42, 37 when connected (e.g. by a shaft 22) to the input 13 rotates at the required speed. The support 31 may be mounted on the tractor draw bar 17. |
