Patent GB-190304937-A (GB)
Title: Improvements in and relating to Tipping Vehicles or Dumping Cars
Inventor: BROOKES ALFRED GEORGE
Filed: 1903-03-03
Granted: 1903-07-16
Abstract: 4937. Brookes, A. G., [Page Car Co.]. March 3. Tip-wagons. - A tipping - vehicle or dumping-car comprises one or more boxes 21, Fig. 1, each tipping laterally about a central longitudinal axis below it. The axis is formed by the thin edge of a T- bar fixed below the box and bearing upon a plate fixed to the central sill 3. At the ends of the T-bar are trunnions which work in sockets fixed to the end sills. The central sill 3, draught sills 6 and side sills 7 are separated by spacing - blocks at intervals, as shown in Fig. 3, and are tied together by transverse bolts. The end sills are tied together by longitudinal tie-rods 17<1>, Fig. 1, and the whole of the underframing is trussed by longitudinal rods 13, 14 bent under queen posts 15, 16 projecting downwards from the framing. Transverse vertical frames rise from the underframing at the ends of the tipping- boxes ; they are braced by diagonal rods connecting them with the sills and by longitudinal tie-rods running the whole length of the car and connecting the ends of the upper cross-bars 22 of the frames as shown at 200. The lower corners of the tipping-boxes are fitted with channel-iron bars 32, which receive the ends of the transverse floor sills 33. The channel-irons are tied together by rods 35 which are bent to serve also as trusses. The floor boards are rabbeted into their supporting- sills and are covered with sheet metal, which is bent up to form the ends of the box. The ends of the box are stiffened by inclined angle-iron posts 49 and by curved Z-iron bars at their upper edges. The sides of the box are open and fitted with doors 40 secured at their upper ends by hooks 41 engaging with lugs on the ends of the box, the lower ends of the doors fitting behind keepers 44 at the bottom of the box. At the top of the door are rollers 45 which, when the box tips, run on fixed inclined surfaces formed on the end frames of the car, the action being such that the side of the box moves downwards away from the door, which remains suspended from the end frames as shown in dotted lines on the left of Fig. 1. When the box returns to the vertical position, the door fastenings are automatically reengaged. To prevent undue friction between the door and the side of the box as it tips, a triangular space is left between the door 40 and the angleiron 49 which terminates the box end ; the space is closed by shields projecting inwards from the door. The box is retained in its vertical position by latches engaging with an offset projecting up from the centre of the top of each end of the box. The latches are pivoted on pins 62 carried by a sheet-metal lining 57, which is supported in a frame built on the cross-bar 22 of the end frame. When the box is to be tipped to either side, the corresponding latch is raised by a tool inserted beneath it, and it is maintained in the raised position by a hinged catch below it. The tipping of the box is effected by a hand-lever pivoted within the lining 57 and carrying two dogs which grip the edge of a curved bar 70 attached to the end of the box. The arrangement is shown in detail in Fig. 22. The hand-lever is fixed in a socket 74 from which project two pins 75 fitting into holes in the overlapping inner ends of two jaws 71. The lower edge of the bar 70 rests upon the lugs 73 projecting from the jaws, and its upper edge is acted upon by the dogs 72 pivoted to the jaws. The fulcrum of the lever is formed by a pin on the back of the socket 74 midway between the pins 75. With the dogs in the position shown, an attempt to move the lever towards the left would result in a tendency to move the bar 70 in opposite directions simultaneously, and the bar would, in consequence, remain locked in position ; but if the right-hand dog be reversed, a motion of the lever to the left will move the bar to the left and the return motion of the lever will cause a further motion of the bar to the left. The ends of the box run on antifriction rollers 85<1>. To arrest the tipping at any point or to control it, a wedge brake operated by a long stroke of the hand-lever acts on the bar 70. The linings 57, Fig. 1, are fitted with hinged covers having on their undersides projections which serve to lock the latches and the dogs 72 when the covers are closed. When the car is to be tipped, the covers are held open by hinged struts, and they then serve as guards to prevent the operator, who stands on the end frame and works the tipping- lever, from falling.