Abstract: A motor vehicle lubricating facility for enabling a workman to perform lubricating functions on an automobile rapidly and efficiently with a minimum of waste time and effort. The facility comprises a building structure with a basement floor and a ground floor supported on columns above the basement floor. In the ground floor are a plurality of rectangular longitudinal openings in parallel relation, each adapted to be straddled by an automobile driven over the ground floor through door openings at the front and back of the building structure. Adjustably supported at a selected one of several heights on the columns between the ground and basement floor and substantially coinciding in area with each of the openings in the ground floor, is a "catwalk" or grilled metal platform, on which a workman may stand to perform lubricating functions with respect to parts of the automobile accessible only from beneath the automobile.

Abstract: A convertible ladder is provided which can be set up as an extension ladder, a step ladder or a trestle. A pair of leg assemblies each have a pair of sides connected by a plurality of rungs. Each leg assembly has regularly spaced hooks along its length which engage with the end lugs of a plank member. The plank member has arms provided with lugs which engage another pair of hooks on each leg assembly to form a trestle. The leg assemblies are also provided with a pair of upturned hook lugs which engage a rung of the other leg to form an extension ladder. In the step ladder configuration, the leg assemblies are maintained at maximum angular relationship by means of ties pivotally connected to one leg assembly with openings to engage pins on the other leg assembly.

Abstract: A movable roof-supported scaffold support which comprises front and rear vertical frame members which are detachably connected by a plurality of spaced-apart connectors. At least three spaced-apart pairs of wheels are mounted on the support. One wheel of each pair is adjacent to the front frame member; the other wheel being remote therefrom. A scaffold connector assembly is secured to the front vertical frame member.

Abstract: A scaffold device is disclosed which includes a workbench guidably movable with respect to support posts. A peripheral skirt, supporting the workbench, has socket members at each corner which slidably engage the support posts. The socket member may be locked to the support posts.

Abstract: A scaffold construction includes a fixed leg portion and an adjustable platform portion with a spring loaded pin connection operatively connecting between the two to selectively lock the leg and the platform in the required relationship. The pin is mounted on one end of a leaf spring which in turn is secured to the platform and engages any one of a plurality of apertures in the leg portion. A gravity operated locking device normally prevents inadvertent disengagement of the pin from the leg unless it is moved upwardly manually thus preventing accidental and inadvertent collapse of the platform relative to the leg.

Abstract: A chain of end support sections are foldably linked together and hang vertically from either side of a horizontal support beam. The beam is attached to a pair of suspension cables through two motorized grip hoists rigidly attached to the beam and the cables then hang downwardly along the chains of end support sections to the ground. Work platforms extend horizontally between the end support sections and can move vertically independently of the end support sections. Means are provided for selectively attaching the ends of any work platform to the cables or the end support sections thereby enabling the independent movement of the end support sections and the work platforms during erection and disassembly of the scaffold system.

Abstract: The present invention relates to a scaffold consisting of section members, joining members, supporting shoulders and keys. The section members are provided with equidistantly spaced openings, the dimensions of which correspond to the outer dimensions of the section members. The scaffold is assembled by providing the section members, constituting the lower upright members, with support shoulders; threading section members on said upright members to rest against said support shoulders to constitute horizontal beams; by disposing a working platform on said beams; by threading guard railings through the openings of said upright members; by fixing said members and shoulders where necessary by means of keys; by joining further section members to the lower upright members by means of the joining members. The lastmentioned section members are provided with support shoulders and the above steps are repeated.

Abstract: An electrically powered steerable scaffolding cart having a vertically positionable platform and handrails transports and supports a workman while he performs overhead work.

Abstract: A brace for converting an extension ladder into a stepladder. The brace comprises a pair of spaced clamping members for securing two diverging extension ladder sections. The clamping members comprise a pair of rods having U-shaped clamps at each of their ends. The pairs of rods are secured by channel sections. An adjustable device for rigid bracing of the ladder sections is provided.

Abstract: A portable collapsible scaffold ladder has a pair of upright caster-mounted end members joined together by a horizontal platform member. A pull-out ladder for ascending to the platform is connectable at its upper end and slidable along its connected end member for movement between a nested position within that end member and a diagonally extending operative position. The platform member is joined to the two end members by T-shaped glide members pivoted to each of the four corners of the platform member. Each glide member has a glide portion slidable along one side of a connected end member and a pivot portion pivoted to an adjacent side portion of the platform member. Each glide member has a resilient leaf-type spring which carries two locking pins, one for interlocking with the platform and the other for interlocking with one of a series of pin-receiving openings in the upright.