Abstract: A tipping vehicle has a tipping tray which is pivoted about a hinge by inflation of a flexible gas bag. The bag is constructed in two sections, the lower of which is generally cylindrical with parallel side walls and the upper of which is generally conical with its central axis tilted toward the hinge. The bag may be inflated with vehicle exhaust gasses.

Abstract: A mechanism for transmitting force produced by a cylinder includes fulcra (5) and linkages (22) pivotally connected at one of their ends to the fulcra (5). The linkages (22) are pivotally connected at the other of their ends to an anchor block (15). The cylinder is pivotally mounted on the anchor block (15). The anchor block (15) moves on rollers (22) along tram guides (11) during the work stroke of the cylinder. The tram guides (11) have slots through which pivotal connecting means (18) extend. The pivotal connecting means (18) are connected to the one end of the linkages (22).

Abstract: A tipping apparatus for a truck body includes a piston and cylinder type thrustor connected at one end to the truck body and connected at its other end to a slide on the truck chassis. Initial extension of the thrustor is converted, via a triangular push rod pivoted on the chassis and linked at one end to the slide thereby providing to a substantially vertically upward lifting force on the truck body.

Abstract: An elevation apparatus for lifting a truck box pivotally mounted on the truck chassis comprises a first main cylinder piston arrangement arranged at the front end of the truck box and a second subsidiary piston/cylinder arrangement provided adjacent the midpoint of the truck box. The secondary piston/cylinder arrangement includes two cylinders, one on either side of the chassis and arranged in the lowered position to lie substantially along the chassis with the piston directly coupled to the truck box and the cylinder coupled directly to the chassis. A latch mechanism for the piston of the main cylinder acts to lock the piston head in position on the chassis when the truck box is lowered and to release the piston head when the truck box is raised so that the piston head moves free from the latch mechanism when the secondary cylinders raise the truck box beyond the extent of the first piston.

Abstract: The device comprises a derrick with a main telescopic arm and an auxiliary arm. The telescopic arm 9 is pivoted on a sub-frame which in turn is pivoted to the main chassis of the vehicle. At the front the main vehicle chassis 3 is mounted a cam having ramps 20 and 21 on which travels a roller mounted to the free end of the telescopic arm. In order to tip the load on the vehicle, the telescopic arm is first contracted, providing a slight upward swing of the arm when the roller 22 climbs the ramp 20. This appreciably relieves the load requirements of the tilting jack thereby enabling handling of larger loads.

Abstract: In a loading crane comprising a crane post on which is pivotally mounted a crane arm or boom, and a main hydraulic piston-and-cylinder unit the lower end of which is pivotally connected to the base of the crane post and the upper end of which is pivotally connected to the inner crane arm end to effect raising and folding movements of said arm, a device, preferably in the form of an auxiliary piston-and-cylinder unit, arranged to displace the upper fulcrum of the main cylinder unit away from the crane post, past an imaginary line extending between the fulcrum pin on which the crane arm pivots relative to said post and the lower fulcrum point of the main cylinder unit.

Abstract: A tipping vehicle comprising a chassis a body mounted on the chassis to tip about a tipping axis and a main and an auxiliary hydraulic ram for tipping the body, the rams each being connected independently of the other between the chassis and the body with the main ram being closer to the tipping axis than the auxiliary ram and with the rams having opposite inclinations with respect to the vertical when the body is in its lowered position.

Abstract: A load transfer device for transferring a portion of the load normally carried by the rear wheel sets of a dump truck to the front wheel sets of the dump truck. The device is in the form of a tag frame which is pivotably mounted on the tailgate of a dump truck so as to be movable between an elevated position in which the tag frame is disposed closely adjacent the tailgate and a lowered position in which the wheel set of the tag frame is in the current engaging position.

Abstract: An operating mechanism for raising the dump body of a dump truck that includes a linear actuator arranged with its longitudinal axis substantially parallel to the floor of the dump body when the latter is in the lowered-carry position and is connected to a bell crank member for raising the dump body.