Patent GB-1429785-A (GB)
Title: Lifting and loading device
IPC: B66F9/12
Filed: 1972-04-19
Abstract: 1429785 Lifting devices D M MILLER 19 April 1973 [19 April 1972] 18070/72 Heading B8H An auxiliary device for use in loading articles into containers comprises mobile loading elements, Fig. 1, in the form of four tines 7-10 mounted on rollers 6, the element 5 being connected by means of an extension linkage 26 to a backplate 23 which is connectible to the carriage plate 3 of a lift truck 1 whose tines 2, in the full line condition of the element 5, are received in compartments 13 in the outer tines 7, 10, so that an article can be carried on the element 5 in this condition to the mouth of a container and then the tines 7-10 are raised relative to the rollers 6 and thus relative to the truck tines 2 by actuating an hydraulic ram 20 associated with each tine, each ram 20 being connected to a bar (16) connected to each roller below each tine and also to a link (14) pivotally attached to each roller so that on actuation of each ram 20 the associated bar (16) is moved to cause rotation of the links (14) and thereby the raising of the tines relative to the rollers, Fig. 3 (not shown), the leading element 5 then being movable away from the truck tines 2 to its position shown in phantom in Fig. 1 on extension of an hydraulic ram 34 connected between the arms 27, 30 of the linkage 26. Further hydraulic rams 35 which are mounted between a cross-bar 31 of the linkage 26 and the rear of the element 5 are operable to move the element 5 further beyond the range permitted by the linkage 26 by causing the temporary severing of the connection between the linkage arms 30 and the rear of the element 5, as shown in Fig. 4. After an article has been deposited in the container by means of the element 5 a winch 36, by means of its cable (37) which is attached to the element, Fig. 2 (not shown), is operable to retract the element 5 to cause its re-engagement with the linkage arms 30. All the rams are supplied with pressure fluid by means of a pipe 38 from the truck 1 and are controlled from a control member 40 on the truck 1. A second embodiment of auxiliary device is shown in Fig. 5 and is in the form of a mobile loading element 105 comprising tines 107 having three rollers 106 at their outer ends, the other ends of the tines being attached to the upper member 108 of a rear transverse element, whose lower member 111 carries a wheel 112 which is driven and steered by means of hydraulic rams 114, 115, respectively, which are powered from the lift truck. Elevation of the tines relative to their rollers 106 is effected by means of hydraulic rams 118 extending between the members 108 and 111, extension of the rams 118 causing upward movement of the member 108 and thus the upward movement of the rear of the tines 107, the front of the tines being also raised by means of a connecting rod (123) disposed within each tine and each of which is connected to a bell crank lever (121) which is connected both to the front of the associated tine and to a carriage (119) on which the rollers 106 are mounted, the upward movement of the member 108 causing rearward movement of a pair of cam levers (124) and thus the rearward movement of the respective connecting rods (123) which cause anti-clockwise rotation of the bell-crank levers (121) and thus the raising of the front of the tines, Fig. 6 (not shown). The tines of the fork lift truck are engageable with the tines 107 from the rear of the device as the tines 107 are of channel shape. The rams 118 are also powered from the lift truck.