Patent GB-1168902-A (GB)
Title: Improvements in or relating to Transportable Load-Carrying Appliances
Inventor: COWLISHAW FRANK
IPC: B60P1/64
Filed: 1967-02-07
Abstract: 1,168,902. Transferring loads to and from vehicles by jacks. W. E. & F. DOBSON Ltd 30 Jan., 1968 [7 Feb., 1967; 16 Aug., 1967; 4 April, 1967], Nos. 5772/67, 37668/67 and 15351/67. Heading B8E. A transportable load-carrying appliance on a lorry 5 comprises, Figs. 3, 4, a container 1 with four hydraulic jack type legs, such as 4, so that when the jacks are extended a lorry can be backed under the container 1. Figs. 6, 7 show that the leg 4 (the other legs being identical) comprises a lower ram 4a in an upper cylinder 4b, the latter being mounted on an axle 8 extending through a girder 9 set back from the side 1a of the container 1. The leg 4 is thus retractable and displaceable pivotally by rotation of the axle 8 which extends through a fixed bearing block 10 in which it is slidable. The inner end of the axle 8 is connected by a pivot 11 to a ram 12a of a double-ended, double-acting hydraulic jack 12. The legs, in operative position, Fig. 6, are spaced outwards from the girder 9. Operation of the jack 12 to contract the ram 12a draws the leg 4 inwardly. In the block 10 is a helical groove 14 in which a spigot 15 projecting from the axle 8 engages. As the axle 8 is drawn inwards the spigot 15 is guided by the groove 14 to cause rotation of the leg 4 to an upper horizontal position under the lower edge of the container 1. Each leg has a catch such as 16 and the groove 14 terminates in a straight portion 14a so that further inward movement of the axle 8 draws the catch 16 into catching abutment with a part 5a of the lorry 5. In a final inward movement of the axles such as 8 all the catches such as 16 are pulled tightly against the parts such as 5a thereby to centralize the container 1 and lock it down to the lorry 5. Fig. 9 (not shown), illustrates a suitable hydraulic circuit for the device. For locating the container 1 lengthwise tapered members such as 22, Fig. 3, fitted to the underside of the container 1 engage between spaced girders such as 23, 24 on the lorry platform. Alternatively, or in addition, bearing blocks (25) of inverted V form engage on inverted V guiders (26) on the lorry, Figs. 10, 11 (not shown). In a modification, Fig. 12, the legs are pivoted at locations on the inner ends of the cylinders and the container 1 has underside rollers, runners or the like 27 which can run on ground rails 28 to which the container 1 can be locked by the catches 16. In a further modification, Fig. 16, the slot 14 and spigot 15 are substituted by a square shaft 32 sliding in a bush 35 replacing the axle 8 and rotated by a small hydraulic jack 42 to pivot the leg 4. Fig. 17 shows a modification in which the transportable load-carrying appliance is a box frame body structure 45, spigots 50, 51 being provided, as an alternative to the catches 16, to engage in the ends of girders 52, 53 on the transport vehicle (not shown). Fig. 18 shows a modification wherein leg cylinders 59, 60 are pivoted at their inner ends 57, 58 so that, after extension of the associated pistons 61, 62 and removal of the lorry 5, the container 1 may be lowered to ground level, for easier emptying and filling, by retraction of the pistons 61, 62. A power pack PP and control valve CV may be fitted to the container 1, Fig. 18 or to the base frame 45, Fig. 17. Fig. 3 shows a reel 6 of hydraulic flexible hose 7 releasably connectible to the container 1.