Abstract: A scaffolding component comprising an inverted channel member and an integral top part, recesses are provided at the juncture of the channel member and the top part for receiving hooks of a platform.

Abstract: Working platforms for scaffolding must be light and functional and easily stackable. It must therefore be possible to include all their components with a long useful life in the static calculations as well. The requirements include both great rigidity in the corner joint of a rectangular bearing frame for the working platform and the smallest possible gaps between adjacent platforms. Above all, however, the smallest possible number of components must be used to keep the costs of such a working platform within limits. To this end the invention makes use of a U-shaped folded footplate (2) clamped between the longitudinal bearing members (11) of the bearing frame. If, in addition, at least the longitudinal bearing members (11) are rectangular hollow sections, no dirt or residual building material can enter the working platform.

Abstract: A scaffolding assembly having at least one pair of substantially parallel spaced-apart scaffolding components, each of which extends between a pair of substantially vertical spaced-apart uprights and supports a respective end of a deck plate extending therebetween. Each scaffolding component is adapted to receive a respective end of said deck plate and prevent accidental disengagement of said deck plate due to wind or accidental contact. Each end of the scaffolding component is provided with oppositely directed tongues extending laterally therefrom, said tongues being adapted to engage securing means mounted on each of said uprights.

Abstract: An end cap system for scaffolding planks, especially for hollow core planks formed of fiberglass or other composite materials, is disclosed. The end cap includes an extrusion having a plank-receiving portion on one side and a rib profile on the other side for slidingly receiving scaffolding hooks. A reinforcing member is placed in the hollow core, extending between its walls, and surrounding the fastening device securing the end cap to the plank, to resist deformation of the plank by the compressive force of the fastening device. The end cap permits similar parts to be used for a wide variety of plank widths and allows for replacement of damaged hooks or the exchange of hook configurations, such as between "high" or "low" hooks.

Abstract: A support leg comprising an upstanding member and securing means for securing both an elongated member and a platform to the support leg.

Abstract: A clamp connector for scaffolding must not only make it possible to join two scaffolding components rapidly and securely but also be inexpensive to manufacture, have a long life and be suitable for use with a wide variety of scaffolding designs. To this end, the invention calls for there to be an aperture (PA) in each of the shaped-section bars of the scaffolding units to be fixed together, the aperture being designed to hold a crossbar (12) and to be locked by a moving clamp (6).

Abstract: A ladder support bracket for staging in which a pair of ladders are supported in a vertical position spaced from a wall and having a staging element supported by the ladder rungs. The support bracket is a rigid A-frame and the ladder is tightly clamped between the apex portion of the frame and the crossbar.

Abstract: An end cap system for scaffolding planks, especially for hollow core planks, is disclosed. The end cap includes an extrusion having a plank-receiving portion on one side and a rib profile on the other for slidingly receiving scaffolding hooks. The end cap permits similar parts to be used for a wide variety of plank widths and allows for replacement of damaged hooks or the exchange of hook configurations as described. In the most preferred embodiment, the hooks are fixed to the end cap, such as by a set screw, after they are slidingly located at the desired position. The end caps of the present invention may be used with either "high" or "low" hooks.

Abstract: The present invention relates to a mountable work platform for use on a ladder, comprising a long plate and a short plate. The long plate and the short plate each further comprise a plurality of plates, arranged in a row and connected by a connection bar and a clamp bar, where a stable assembly is attained by protrusions of the connection bar and the clamp bar holding depressions on the plates. The connection bars of the long plate and of the short plate together embrace a step of the ladder, and the clamp bars of the long plate and of the short plate each hold another step of the ladder in a grip. The long plate and the short plate are independently usable as a table on the ladder, when the ladder is folded.

Abstract: A scaffolding plank for a framework scaffolding or a suspended scaffolding, which has its object to eliminate a clearance in all directions of the scaffolding plank and to detachably mount a stopper at the back of a hook on a lateral member with a one-touch control.There is comprised of a horizontal plank body 6, a plurality of hooks 9, 10, 11, 12 provided at both front and rear ends of the plank body, a plurality of notches 13, 14a, 14b, 15, 16a, 16b likewise provided at both front and rear ends of the plank body, and a stopper mechanism S provided below each hook to be freely moved in and out, said front hook being provided on the same axis where the rear notch is provided, said rear hook being provided on the same axis where the front notch is provided.

Abstract: A connecting device (10) is adaptable to assemble one, two or three ladders (72, 74, 76) into a tripod structure. A body (12) of the connecting device has six rung receivers (28) affixed thereto and outwardly projecting therefrom in pairs, with each pair of receivers projecting at an angle to the other pairs and at an angle to the vertical. Where three ladders are not available, support members (140, 160) may be employed to form one or two of the tripod legs.

Abstract: A scaffolding system for holding and hanging wallboard in an overhead orientation while using only a mechanic and one helper is disclosed. The invention comprises a plurality of braces in a vertical, opposed, parallel relationship, having paired upstanding side members for maintaining a stable, untippable status. Each side member further has a recess on a lower end adapted for receiving a wheel for mobility. A plurality of rigid sections are horizontally disposed within the braces and form a platform for the mechanic and helper to stand on. A plurality of ladders urge the helper to mount one of the side braces after the wallboard is resting on a plurality of pintles against the side members. A plurality of wheels provide mobility for the system without disassembly of the system as the wallboard is installed overhead.

Abstract: The PLANK SUPPORT JACKET comprises an upper horizontal ledge and a lower horizontal ledge joined to a vertical wall member, each ledge extending from the vertical wall member in a direction opposite each other and means for connecting the vertical wall member to a longitudinal side surface of a plank of wood to be supported thereby such as to dispose the lower horizontal ledge adjacent the underside surface of the plank and the upper horizontal ledge in substantially axial alignment to the upper surface of the plank.

Abstract: A collapsible-expansible support assembly including a support platform arranged to be supported by spaced ladder frames pivotally joined by a collapsible-expansible truss assembly, adapted to be restrained and automatically locked in shielded outward, expansible movement, the support assembly being mounted on a unique set of casters and plugs.

Abstract: A combination scaffold plank comprised of a metal platform having a rectangular base, side flanges extending downwardly from each side of said rectangular base and return flanges extending inwardly from the end of each side flange. At each end of said metal platform said return flanges are cut away or bent upwards, and a pair of slip resistant blocks is secured to the lower or inner surface of said metal platform. A slip resistant board is then secured to the base of each pair of slip resistant blocks such that the slip resistant board extends below the side flanges and return flanges, thereby providing the surface upon which the combination scaffold plank can rest. This surface provides sufficient friction to prevent slipping of the combination scaffold plank off of the metal scaffold frame, or the upper metal surface of another scaffold plank, on which it rests.

Abstract: In a scaffold for construction work, four supports are provided at the respective corners of a rectangle. The front and rear supports on each side are connected to each other by connecting frames which can be folded without changing the height of the scaffold. After the connecting frames are folded, a scaffolding floor member provided on the top surface enclosed by the four supports can be rotated about its one end so as to pivot to a lowered vertical position.

Abstract: To improve the stability of a scaffold board consisting of an upper sheet section and a lower waved sheet section and to reduce its weight at the same time, the lower sheet section is connected with its wave tops substantially pointwise to the upper sheet section. The resultant cavities are foamed with an expanding and curing foam, with the expanding foam squeezing the upper and lower sheet sections apart.

Abstract: The PLANK SUPPORT JACKET comprises an upper horizontal ledge and a lower horizontal ledge joined to a vertical wall member, each ledge extending from the vertical wall member in a direction opposite each other and means for connecting the vertical wall member to a longitudinal side surface of a plank of wood to be supported thereby such as to dispose the lower horizontal ledge adjacent the underside surface of the plank and the upper horizontal ledge in substantially axial alignment to the upper surface of the plank.

Abstract: A collapsible ladder having vertical and horizontal ladder parts has a stepboard detachably mounted on the horizontal ladder part. The stepboard has a width which is less than or equal to the separation between uprights of the horizontal ladder part and retaining members for detachably securing the stepboard to the rungs of the horizontal ladder part.

Abstract: Scaffold mounting structure for mounting a longitudinally extending scaffold deck to a raised framework including a pair of scaffold deck fastening members constructed to be mounted to a scaffold deck end so as to allow a scaffold deck rung to be readily assembled and positioned proximal the scaffold deck end to enhance scaffold stability.

Abstract: Lightweight scaffolding is made of aluminum or other lightweight material. The scaffolding includes end frames with vertical and horizontal frame members, the latter having special shapes for greater strength in a vertical direction with rounded top surfaces having ridges to prevent slipping. The horizontal frame members are evenly spaced to provide rungs for workers to climb. The vertical frame members are of generally cylindrical shape with thicker portions on opposite sides, the thicker portions having flat surfaces. One portion provides a full surface to which ends of the horizontal frame members are welded. The other provides a stable surface to which an adjacent end frame can be fastened. Braces can be affixed by bolt and wing nut fasteners so that a brace can be fastened to either side of the vertical frame member. Simplified connecting pins connect vertically stacked end frames. The scaffolding also includes a base to provide added width and stability, to which base vertical frame members are affixed.

Abstract: Standard platforms are integrated into a mason's scaffold to reduce manufacturing and assembly costs. The standard platforms having hooks on both ends. The hooks are supported on lower horizontal members of respective rectangular frames. Platform fasteners are secured to each lower horizontal member with the standard platform hooks therebetween, thereby retaining the standard platforms to the frames to form a working deck. Each platform fastener comprises a metal sheet to which is welded an L-shaped bar that engages a hole in the frame lower horizontal member. A pin slides within the metal sheet and cooperates with the bar to positively secure the platform fastener to the frame lower horizontal member. Similar standard platforms and platform fasteners are assembled to upper horizontal members of the frames to form a protective canopy. Hatches with selectively openable doors may be used for some sections of the canopy.

Abstract: A plank for use on a scaffold. The principal component is a hollow integral aluminum extrusion with an elongate rectangular shape transverse to its length. The extrusion has a top wall, a pair of spaced-apart opposing sidewalls extending downwardly from the top wall, and a longitudinal locking structure located between the sidewalls. A complementary fastening assembly cooperates with the locking structure to secure the extrusion to a horizontal cross-member of the scaffold. Sheet material containing mineral particulates is adhered to the upper surface of the extrusion to provide a non-slip walking surface. After use in an environment containing dangerous contaminants, such as radioactive materials, the sheet material may be stripped for disposal and the extrusion cleaned with an appropriate solvent before re-application of fresh sheet material.

Abstract: The present invention relates to a scaffold deck of simplified construction. The scaffold deck has two parallel side rails connected at the ends by means of parallel transom members. Hook members are provided at the junction of the transom and side rail members with the fasteners for each hook member commonly securing the respective transom and side rail. The side rails at the opposed interior edges include a substrate engaging slot extending in the length of the side rails and have an edge region beyond the substrate which forms part of the top working surface of the scaffold deck. The scaffold deck advantageously uses the side rails for forming an edge region of the scaffold deck whereby the amount of substrate between the side rails is reduced thereby reducing cost and improving the weight of the scaffold deck.

Abstract: A folding scaffold for supporting workers and material including a folding frame and a plurality of supporting planks. The frame includes two ladder frames with rungs, which ladder frames are connected by the support frames which hold the ladder frames a spaced distance apart when the scaffold is fully extended. The support frames are of different size and they are hingedly connected to fit in the same plane when the scaffold is in the folded position. The larger support frame protrudes a spaced distance from the smaller support frame when in the same plane to form a handle for easy transport of the scaffold when folded. When fully extended the end of the larger support frame is equi-distant from the ladder frames. The supporting planks extend between the ladder frame and are notched to receive the rungs of the ladder frame to hold the ladder frames in a parallel relation. A removable snap-on spring clip retains the ladder frames in the folded position for transport or storage.

Abstract: Climbing apparatus including a rolling tower support platform, and method and tooling for the same wherein one of two spaced double walls of each of opposed tower rails of a tower ladder is snugly gripped by detents formed on the end portions of spaced rail rungs and the extremities of the rungs are flared, the rails including expanded bottoms for snap lock and threaded lock assembly with unique caster boxes of a caster wheel assembly for the tower rails and a support platform mounted on the rails with slidable carriages having double grip and threaded pin tightening arrangements and also having sockets to receive collapsible hand rail assemblies with unique hinges for gates thereof.

Abstract: A support having two support sections slidably engaged with each other includes a lock that can be used to releasably fix the size of the support surface defined by the support sections. The lock is mounted to one of the support sections and includes a shaft that can be received by any of the series of openings defined by the remaining support section. When the shaft is located within an opening, the positions of the support sections relative to each other are fixed, and the support surface will remain stable during use.

Abstract: A ladder platform preferably for extension ladders, has supports for receiving ladder rungs and supporting the platform in a generally level condition on any desired position between the top and the bottom of the ladder. The ladder platform provides support for someone working on the ladder and items that might be needed while working on the ladder.

Abstract: Interactive component parts for assembling an ATV-mounted hunting stand of either the "A"-frame type or tree-leaning type, or alternatively as a ground-standing tree-leaning hunting stand. It includes a leveling seat platform, ladder elements, quick-grasping base connector assemblies, and a ground support. The seat platform has angularly-adjustable sockets so sized as to fit onto the upper ends of ladder elements, whose lower ends may have sleeves to allow these ladder elements to be mounted atop other ladder elements. Base connector sleeve assemblies allow ladder elements to be quickly and easily mounted on and demounted from rods attached to an ATV; they are free to pivot about these rods. When such ladder elements are so mounted on an ATV as an A-frame hunting stand, changing the angularity of the seat sockets effects seat leveling. For ground-standing ladder use, a broad ground support may be inserted into the lowest ladder element.

Abstract: A connector for maintaining the floor elements of a scaffold in a fixed spaced relation is disclosed. The connector comprises a plurality of independent sleeves, each of the sleeves being adapted to receive one of a plurality of floor elements. The sleeves are rigidly interconnected. Each sleeve includes an opening that is adapted to receive a nail so that the sleeve and the respective floor elements may be connected.

Abstract: A scaffold flooring attachment clamp utilizing two identical rotably connected members to attach a cross-member of a scaffold suporting structure to a scaffold flooring. Each of the identical members includes a semi-circular jaw portion and a tab portion, with the semi-circular jaw portions being arranged so as to oppose each other, and are therefore adapted to receive and hold the cross-member of the scaffold supporting structure. The tab portion of the clamp is adapted to being bent over and affixed to the scaffold flooring such that the attachment clamp is locked in place securing the scaffold flooring to the scaffold supporting structure.

Abstract: An improved method and apparatus of scaffolding during building has a scaffold with folding hanger and work frames, storable bumpers on the work frame for propping the scaffold off of a wall, and a hanger structure in the hanger frame for suspending the scaffold from the cap or upper header of a building wall. The scaffold is also usable as a sawhorse and a ground/floor supported scaffold. The method of scaffolding provides the steps of hanging the scaffold from the header or cap, propping the scaffold off with storable bumpers, and folding the scaffold flat for storage and transportation.

Abstract: An improved means for securing planking to a horizontal support in a platform having a plurality of vertical support frames laterally joined with cross braces for use in constructing bleachers, risers and stages. The vertical support frames have horizontal supports for planking and means are concealed within the underside of the planking to prevent the planking from uplifting or shifting from end to end or back and forth on the horizontal support. The means are in the form of male and female mating endcaps for the planking in cooperation with a hook provided on the horizontal support.

Abstract: A combination folding ladder and height adjustable scaffold, comprises (a) a first assembly including a first leg and a second leg, each formed by an outer and inner telescoping member, and outer and inner rungs which connect the outer and inner telescoping members in substantially parallel, spaced apart relation; (b) a second assembly including a third leg and a fourth leg, each formed by an outer and inner telescoping member, and outer and inner rungs which connect the outer and inner telescoping legs of the third and fourth legs in substantially parallel, spaced apart relation; (c) positioning joints removably secured to upper ends of the for pivotally securing the first and second assemblies together; (d) a height adjustment assembly for varying the heights of the legs; and (e) a scaffold platform for use with the combination when the positioning joints are removed from the legs and the first and second assemblies are separated, the scaffold platform including a flat rectangular board, U-shaped supports a

Abstract: Scaffolding that has a high strength-to-weight ratio, and is light, well balanced and easy to carry, lift, and assemble. The decking cross member of scaffold frames according to the invention is placed at approximately forty percent (40%) of the height of the scaffold frame. Other structural members laterally connect the frame uprights to add strength and to balance the frame about the midportions of the uprights. This structure allows for quick and easy scaffolding assembly with a minimum of danger. A worker standing on the decking of a level of scaffolding can easily reach the top of the frame supporting the decking on which he is standing, which is approximately waist high, in order to assemble the next level of scaffolding. Location of the decking cross member also places the decking at approximately the same height as the cross bracing between frames, so that workers standing on the decking can work on adjacent vertical surfaces with minimum impairment of arm movement by cross braces.

Abstract: A scaffolding platform is provided which is stronger and more resistant to damage. The platform includes two longitudinally-extending parallel rails and transverse, parallel cross rails affixed at least to end portions of the longitudinal rails. Mounting hooks for mounting the platforms on scaffold frames are affixed to end portions of the longitudinal rails by fasteners which are located on both sides of one of the transverse rails for each hook, there preferably being four fasteners for each hook. One end of each of the transverse rails has a notch to straddle the body of one of the mounting hooks between its two pair of fasteners.

Abstract: A scaffold plank hanger is suspended from a rung of a ladder by hooks engaging such rung which are spaced apart less than the width of the ladder. Such hooks carry a crossbar of a length greater than the width of the ladder. A scaffold plank has hooks projecting from one end which are hooked over opposite end portions of the hanger crossbar between its ends and the adjacent ladder rails, respectively.

Abstract: A support assembly for e.g. a scaffold support platform, comprises two horizontally spaced elongate elements 10 mounted between two longitudinally spaced supports 12 and 14 by means of respective hook connectors 16 and 18. The elements 10, connectors 16-18 and supports 12-14 are so dimensioned and arranged with respect to one another that upwardly directed disconnection of the connectors from their supports is prevented unless the element 10 is first deliberately displaced in a direction parallel to its longitudinal axis. Upon such displacement, the element 10 may be tilted upon one support to permit upwardly directed disconnection from the other support.

Abstract: A scaffold assembly that can be disassembled and reassembled is provided with spring locking members which are attached releaseably in vertical mounting pieces supporting a shelf and which can engage in the attachment holes of vertical struts to lock the vertical mounting pieces against movement relative to the vertical struts.

Abstract: A side rail system for interconnecting layered sections of elongated scaffold staging with the sections respectively spanning pairs of opposing upper and lower support arms of pump jacks which respectively ride on spaced apart pump jack poles. The side rail system includes upright posts which are spaced along the staging. A pair of rods are associated with each of the posts. The rods confrontingly project from the respective staging sections. The posts are pivotally coupled to the rods and are secured to the rods by quick adjust pins to prevent separation of the rods and posts. A mid-rail as well as a toe board can be interconnected between the rails. An end rail system can also be included. The scaffolding arrangement can be used exteriorly with a brace onto a wall. It can also be used interiorly between roof and floor with appropriate height adjustment arrangement provided.

Abstract: A side rail system for interconnecting layered sections of elongated scaffold staging with the sections respectively spanning pairs of opposing upper and lower support arms of pump jacks which respectively ride on spaced apart pump jack poles. The side rail system includes upright posts which are spaced along the staging. A pair of rods are associated with each of the posts. The rods confrontingly project from the respective staging sections. The posts are pivotally coupled to the rods and are secured to the rods by quick adjust pins to prevent separation of the rods and posts. A mid-rail as well as a toe board can be interconnected between the rails. An end rail system can also be included. The scaffolding arrangement can be used exteriorly with a brace onto a wall. It can also be used interiorly between roof and floor with appropriate height adjustment arrangement provided.

Abstract: A coordinated stage system with articulate means for interconnecting two or more stages in line and in series for use on scaffolding equipment, pole jacks, bridges, docks and the like is disclosed.The coordinated stage system provides a continuous path wherein the length of the path may be increased and changes in elevation are accomplished by a novel joint arrangement.

Abstract: A method and apparatus for making hook-to-rail connections for scaffolds or the like, namely a method of securing an offset hook to a rail or beam of generally I-shape by inserting an arcuate plate of such ductility as to be deformable upon extension thereof to fill spacing between the flanged ends of the rail or beam and the hook and to secure the hook to the rail.

Abstract: A foldable scaffold is disclosed, including a frame and a person-supporting plank. The frame comprises two upwardly-extending end ladders. A backwardly-located truss pivotally joins the ladders together and includes a hinge at the intermediate portion thereof for pivotal forward movement of the latter from a fully-extended truss position to a folded truss position. The latter movement produces relative lateral movement of the ladders from spaced-apart positions, one toward the other, to near-abutting positions. The frame also includes a hinge to releasably immobilize the hinge and maintain the truss in fully-extended position. The person-supporting plank is removably fixed to and extends between the ladders when the truss in its fully-extended position.

Abstract: A scaffold plank comprising a layer or layers of covering member wrapping a plurality of hollow, lightweight elongated members rectangular in cross section and arranged in side-by-side contact to provide at each end a plurality of transversely aligned opening mouths into which a corresponding number of inwardly projecting plug portions of a transverse end member are matingly fit, whereby plank ends are protected from deformation, damage, and incoming of mud or water. The plurality of elongated members may be replaced by a single piece of partitioned tubular member which is a rectangular in cross section and has two or more opening mouths formed respectively at opposite end thereof.

Abstract: A scaffold plank correction arrangement comprises a pair of identical connectors, each having a horizontal flat portion attached to a plank and a folded-down tongue portion integrally formed therewith. A transverse slit is provided in the flat portion of each connector, which slit extends parallelly to the common boundary between the flat portion and the tongue. When the connectors are placed in an overlapping relationship, the tongue of one connector protrudes through the slit in the other connector whereby a direct connection is formed between the ends of two adjacent planks (FIG. 2).

Abstract: A scaffold is disclosed having a platform and at least a pair of generally horizontally extending, spaced support members beneath the platform. A pair of longitudinally spaced openings are formed in the platform through one surface to extend generally perpendicular thereto. A hollow cylinder is mounted in each opening having a pin mounted therein for movements between a retracted position and an extended, operative position. The platform can be disposed on the support members with the pins in the operative positions to prevent the platform from sliding off the support members, and the platform can be turned over to move the pins to the retracted positions for transport and storage purposes.

Abstract: In a scaffolding assembled of vertical posts, trough-shaped crossbars secured to the posts and gangplanks hooked on the edges of crossbars by claws, a safety device for securing the gangplanks against accidental lifting includes oblong holes formed in the bottom of the trough-shaped crossbars, a rail arranged above each crossbar and overlapping the claws, each rail being provided with a downwardly directed projection formed at its end with a bent portion insertable into the holes and engageable with the crossbar, and a locking plate hinged to the end of the rail which is situated away from the direction of bending of the hook-shaped portions.

Abstract: The scaffold system of this invention includes structures for retaining hollow folded metal planks on scaffold end frames or scaffold side brackets. A plank retaining lug is used to engage the underside of a plank and cooperates with a hold-down shoulder to retain the plank in place. A frame header may use the structures described to retain planks on both sides of an end frame. The frame header may be releasably mounted to a conventional scaffold end frame. Side brackets may be equipped with the structures to retain planks cantilevered from the scaffolding system.

Abstract: A scaffold plank has a horizontal metal walkway provided with a plurality of perforations with selectively upwardly and downwardly extending collars, two side flange members each extending along one side edge of the walkway and formed by a side portion of the latter, and two end profiled members each extending beneath the walkway along one end edge of the latter and connected with the walkway and the side flange members. Each end profiled member is provided with an element for suspending the plank.