Improvements in or relating to transmissions for traversing bulkheads or other partitions along compartments particularly on vehicles

摘要

760,130. Moving bulkheads in vehicle bodies. WALKER & COUNTY CARS, Ltd., VENNING, R. B. H., and TAPP, D. R. F. Dec. 13, 1954 [Dec. 11, 1953], No. 34645/53. Class 78 (4). The transmission for moving a bulkhead 15, Fig. 1, to move material in a compartment comprises one or more endless flexible elements 25 ... 28 guided to form a number of stretches moving simultaneously in the same direction and secured to at least three points on the bulkhead. In the construction of Fig. 1, a pair of chains 25 on each side of a vehicle with telescoping scuppers 10, 11, 12 pass over driven sprockets 18, 20 and are secured at one end to the wall 15 of the inner scupper 10 and at the other end to cables 26, 28 which are returned over pulleys 23, 24 to be secured to the wall 15. The pulleys 18, 20 are fast with pulleys 17, 19 connected by a chain 21 and the common shaft 22 of the lower pulleys is driven from the power take-off of the vehicle engine. The separate endless elements formed by the cables and chains 25, 26 and 27, 28 may be replaced by a single element on each side passed over pulleys and sprockets suitably disposed to form two pairs of runs with those runs moving in the same direction connected to the bulkhead or wall 15. Further the endless elements on opposite sides may be joined to form a single endless element as shown in Fig. 4 in which a cable 30, 32, 33, 36, 45, 51 is passed over suitably disposed pulleys to provide four runs 30, 30, 36, 36 secured to the bulkhead 15 which moves relatively to the inner scupper 10 of a pair of scuppers 10, 11. Any of the pulleys illustrated may be driven or replaced by driving sprockets engaging a portion of chainsecured in the cable. Alternatively, the runs 51 of Fig. 4 may be broken and theirends wrapped around driving drums carried by a common lateral shaft driven from the vehicle engine. In the construction of Fig. 5 two endless elements, each formed of a length of chain 69 passed over sprockets 52, 68 and a length of cable 54, 56, 58 passed over suitably disposed pulleys on the vehicle framework and over pulleys 62, 64 on the inner scupper 10 are secured to the bulkhead 15 at two upper laterally spaced points and to a single central tongue 6 towards its lower end. As indicated in Fig. 6 the pulleys 62, 64 are carried by a bracket 71 which is protected by the inclined wall 70 of the bulkhead 15 from the material in the inner scupper 10. In the construction of Fig. 8 an endless cable 30, 32, 36, 45 reeved as shown is driven by a connection 75 between the run 36 on each side of the vehicle and a run 72 of an endless chain carried by sprockets 73, 74. The sprockets 73 on opposite sides are driven by their common shaft 76 either from the engine of the vehicle or through a manuallyoperated drive from a crank. According to the Provisional Specification chains driving the bulkhead can be driven by a reversible ratchet mechanism driven manually or by power.