Patent GB-692492-A (GB)
Title: Improvements in or relating to wagon traversers
IPC: B61J1/10
Filed: 1950-08-17
Abstract: 692,492. Railway wagon traversers. MITCHELL, F. G. Aug. 15, 1951. [Aug. 17, 1950] No. 20472/50. Class 104 (ii). A railway wagon traverser has a carriage which is movable along a track arranged transversely to a set of parallel railway sidings and is surmounted by a travelling mechanism movable thereon in a direction parallel to the sidings and comprising two or more trolleys mounted one above the other and movable bodily and also relative to one another in the same direction so that the efiective movement imparted to one of the trolleys, which is provided with catch means for engaging a wagon to be moved, is greater than the width of the carriage. A carriage 19 mounted on rails 24 disposed at right angles to siding rails 15 has mounted thereon a section of the rails 15 for the passage of a wagon 67 and rails 16 for the passage of a trolley 17. The trolley 17 carries a secondary trolley 26 movable thereon on flanged wheels running in channels 29 and is moved over the rails 16 by a pair of ropes 23 passed over pulleys 25 at the ends of the carriage 19 and attached to driving drums 22 and at their ends anchored at 27 on the trolley 17. The secondary trolley 26 is moved by a pair of ropes 31 attached to anchorages 32 on the carriage 19 and at one end passed over pulleys 33 mounted at one end of the trolley 17 and attached to a spring device 34 on the trolley 26 and a pair of ropes 35 also attached to the anchorages 32 and passed over pulleys 36 at the other end of the trolley 17 and attached to the other end of the spring device 34. The carriage 19 and the trolleys 17, 26 are moved by an electric motor 18 through an epicyclic gear mechanism 20. The mechanism 20 has two brake drums and when the trolleys 17, 26 are to be moved a band brake 61 is applied to one drum through levers 62 and solenoids 63 so that the drums.22 are driven through bevel gears 52, 53 and pinions 55, 56 and when the carriage 19 is to be moved a band brake 61 is applied to the other drum so that a shaft 59 is rotated through a train of gear wheels. A catch 38 on the secondary trolley 26 engages with an axle 66 to move the wagon 67. After the carriage 19 is aligned with the siding rails 15, 16 the drums 22 are driven to move the trolley 17 on to the siding rails 16 and to move the trolley 26 over the trolley 17 so that the catch 38 may engage axle 66. The trolley 26 is then moved further to the right to rotate the catch 38 from the position shown in Fig. 7 to that shown in Fig. 6 and to withdraw a connecting rod 68 from above a stop pin 69 which is then moved upwards by a balance weight 70. The wagon is thereupon pulled onto the traverser and moved to align with the required siding and pushed thereonto. A shock absorber 75 limits the rotation of the catch 38. Towards the end of this movement a roller 78 mounted on a lever 82 pivoted on a lever 71 rolls on to a cam plate 80 of a tripper 77 and is pivoted in a clockwise direction against a spring 83 and at the same time a pair of pawls 79, freely mounted on either side of the lever 71 run idly over ratchet grids 81 as the trolley 26 is moved to the extreme right hand position shown dotted in Fig. 1. The trolleys 17 26 after'reaching the extreme right hand position are returned to their initial position and as the return movement is commenced one of the pawls 79 engages a ratchet grid 81 to tilt the lever 71 to withdraw the stop pin 69 to disengage the catch 38 from the axle 66. The spring 83 pulls the lever 82 to lift the pawls 79 away from the grid 81 once the lever 71 has been tilted. Specifications 550,529 and 628,500 are referred to.