Patent GB-1367647-A (GB)
Title: Container-carrying vehicles
IPC: B60P1/48
Filed: 1971-11-22
Abstract: 1367647 Tipping containers MASCHINENFABRIK FAHR AG 22 Nov 1971 [23 Nov 1970] 54141/71 Addition to 1288649 Heading B7B [Also in Division B8] A container carrying vehicle comprises a towing hitch 2, a frame 1 with side members 3 and a lifting linkage 6, 7. The linkage 6, 7 is locked to the frame 1 for picking up and carrying a container 11, but is unlocked for pivotal movement about a pivot 12 on the frame 1 for tipping the container 11, the unlocking being effected by the linkage as it moves into position for tipping. As shown, in the carrying position, the upper end of link 7 is a pin that engages a fork 15 on the container 11, a roller 13 at the upper end of link 6 engaging under the rim 10 on the container 11. At its lower end the link 7 has a roller 14 engaging in a channel 9 pivoted at 12, the lower end of the link 6 being pivoted at 16 on the frame 1. The channel 9 carries two webs: inner 31 and out 30, a fixed pin 26 runs between them. An inner slide 34 carries fixed pins 28, (29), (Fig. 7, not shown), passing through slots in the webs 31, 30. Further pins 27, (27<SP>1</SP>) fixed to the back of the channel 9 and carrying spacers 35 pass through slots in an outer slide 33 and holes in the inner slide 34. A spring 39 fixed to a stud 36 on the inner slide 34 and passing through a slot in the channel 9 is attached to the channel 9 and biases the inner slide 34 rearwards (i.e. to the right as shown). The outer slide 33 carries locking plates 32, (32<SP>1</SP>) co-operating with locking hooks 4, (4<SP>1</SP>) on the frame 1. Outer slide 33 carries a stud 41 on which is pivoted a lever 42 biased by a spring 43 and with a projection 48 engaging a lug 38 on the inner slide 34 to fix the relative positions of the slides 34, 33 except when the linkage 6, 7 is raised for tipping, outer end 46 of the lever 42 resting in the lowered position of the linkage on the frame 3. A latch arm 17 is pivoted at 18 to the lower end of the link 7 and has a latch 22 biased towards a pin seat 20 by a spring 23. To pick up a container 11 from the lowered position of the linkage 6, 7 (when the latch 22 and seat 20 are well forward, to the left as shown, of the pin 28 the vehicle is manoeuvred to engage the container 11 at the fork 15 and by the roller 13. Lifting jack 8 is then extended until the latch arm 17 rides over the pin 26 when the fluid pressure supply is cut off and the container 11 sinks until the seat 20 rests on the pin 26, and is then in the carrying position. The container 11 may be further lifted by extending the jack 8 further until the seat 20 engages either pin 28 or pin (29). In either of these positions cutting of the fluid pressure allows the container 11 to sink and the weight acting on the pin 28 (or (29)) slides the inner slide 34 forwards to release the locking plates 32, (32<SP>1</SP>) from the hooks 4, (4<SP>1</SP>). Further extension of the jack 8 now tips the container 11 about the pivot 16. From the position shown the latch may be released from the pin 26, the jack 8 being unpressurized, by supplying pressure fluid to the jack 8 until the latch 24 snaps over the pin 26 whereupon the jack 8 may be cut off from the fluid pressure supply when, as the linkage 6, 7, sinks, the latch arm 17 will ride over the pin 26. The latch arm 17 may be similarly disengaged from the pin 28 or (29).