Abstract: A lifting truck is provided with a folding rail assembly for confining workers to an elevated platform. The folding rail assembly includes a plurality of link members pivotally connected relative to the platform and to a protective railing structure. The link members permit movement of the protective railing structure between a lowered position and an elevated position relative to the platform. One or more latch members are pivotally connected with respective link members for preventing movement of the railing from the elevated position. The latch members are configured to allow the railing to be lifted directly to the elevated position. The latch members comprise handles for exerting an opposing force against the bias of a spring for releasing the latch members to permit the railing to be lowered after use.

Abstract: An improved parking brake is provided for use on a movable machine, in particular a lift truck with an elevating platform. A pin-type brake is provided with a buffered slide mechanism which engages and disengages a slotted disc mounted on a wheel to brake the machine while not in use. The buffered slide mechanism provides a delay for the slide mechanism when the slide and apertures in the slotted disc are not in precise alignment, and automatically engages or disengages the brake when the slide and disc apertures are in alignment. The brake also reduces wear on the internal cylinder components by providing a slide supported at its ends by guides and pivotally linked to the cylinder mechanism.

Abstract: The invention provides an elevating apparatus for raising and lowering a work station holding personnel, equipment, and/or materials between a downward declining, compact retracted position and an upwardly inclining extended limit position. The work station is connected to a mobile support base by parallelogram first and second boom assemblies which are operatively interconnected by a boom assembly coupler and rigid compression link. Thus, raising or lowering the first boom assembly by hydraulic lift means causes the second boom assembly to move correspondingly such that the work station moves vertically, unaccompanied by any substantial horizontal motion, and is maintained in a level attitude throughout the range of motion of the apparatus.