Abstract: An attachment device is provided for use with a ladder having two side stile members and a plurality of hollow rungs connected therebetween for extending at least one of said side stile members so that the ladder can be used on uneven ground. The attachment device comprises an elongated member provided with a longitudinal slot extending lengthwise therethrough, and mounting means for adjustably attaching the elongated member to one of the side stile members. The mounting means includes at least one first crossbar adapted to fit through the slot in the elongated member and to extend through one of the hollow rungs and means for securing opposite ends of the at least one first crossbar to the side stile members.

Abstract: A sign holder assembly used to pendently support signs, posters or advertising material from a ceiling or overhead support. The holder assembly has a strip of magnetic material that adheres directly to metal ceiling structures. A channel body accommodates one or more hooks that are attachable to the sign. A gripping tool having an elongated handle is used to locate the holder assembly adjacent the metal ceiling surface and remove the holder therefrom.

Abstract: A ladder-like stilt, designed to be used in pairs, particularly for ceiling work such as sheetrocking as shown. Two pairs of side rails are joined at a conventional head step area. The area of the otherwise conventional head step is extended by the employment of an elongated head step platform to which a boot is attached for accepting the user's foot. The downwardly projection of the head step platform falls within the footing defined by the distal ends of the side rails, thus providing a stable platform for standing, when the stilts are used in pairs. The boot allows the user to walk on the stilts and perform elevated work, while being able to quickly dismount and climb down the steps.

Abstract: A scaffold for an A-frame ladder, including a platform for being positioned between two legs of the ladder, supported on a bottom side of the platform intermediate two opposing ends thereof by a rung of the ladder and extending outwardly from opposite sides of the ladder. The scaffold includes a first strut pivotally attached to the bottom side of the platform adjacent one end thereof and extending diagonally downward for engagement with a rung of the ladder below the rung supporting the bottom side of the platform, and a second strut pivotally attached to the bottom side of the platform adjacent the other end and extending diagonally downward for engagement with the rung of the ladder with which the first strut is engaged.

Abstract: A pen set having a base, which base is adhesively secured to a countertop. The pen set includes a jacking mechanism within the base whereby the base may be lifted from the countertop without damage to either the countertop or the base.

Abstract: A quickly foldable and substantially braced sawhorse bracket, to which, in conjunction with a second, like, sawhorse bracket, are attached an elongated top beam 34 and four elongated leg members 36 to create a single, foldable sawhorse; utilizing a flat top beam attachment plate 14 and L-shaped leg attachment angle plates 22 for variety in cross-sectional dimensions of top beam 34 and leg members 36; two almost identical bracket sides 46 of bracket being pivotally joined at two points on top and hingedly joined and braced by a pivotally operating spreader brace 24 attached to lower leg plates 22.

Abstract: A safety device for a stairway or other inclined surface includes a rail and a safety belt. The safety belt is wrapped around the rail to form a noose. The noose allows the safety belt to move freely along the rail when a person is not falling and prevents the safety belt from moving along the rail when a person is falling.

Abstract: A net is yieldably supported in an elevator shaft to permit a controller, decelerated descent of an object falling down the shaft. The net is automatically closed and maintained in a closed state by closure rings that slide along tethers attached to the net.

Abstract: This a means for locking an automobile battery to its mounting plate so that it can't easily be stolen. It includes a special block and hardened material which serves to lodge a mounted battery in place against its mounting plate. A bolt is secured through this block to the mounting plate. The bolt has a head formed with a variably configured female locking receptacles which fits down in a recessed opening in the top of the block. A key male piece can be matingly received in this female head so that the attached bolt can be turned to lock or release the battery. The key can be removed and the recessed head becomes inaccessible for security of the battery.

Abstract: An anchor system for use with a lanyard secured to a worker located at an elevated position to prevent the worker from falling. The anchor system is arranged to be releasably secured to a fixed member, e.g., an I-beam, adjacent the elevated position and comprises a releasable holding assembly and an associated connector assembly. The holding assembly comprises an elongated flexible strap and a releasable fastening/locking device. The releasable fastening/locking device is a ratchet-operated member fixedly secured to one end portion of the strap for receiving the other end portion of the strap so that the strap can be tightly encircled about a portion of the fixed member against accidental slippage or disconnection. The connector assembly comprises a sleeve having a ring fixedly mounted thereon. The sleeve is arranged to receive the strap therethrough to mount it on the strap at any desired position. The lanyard is connected to the anchor assembly via the ring.

Abstract: A multiple use ladder support attachment (M.U.L.S.A.), for hollow rung ladders, designed to pivot and lock a pair of arms (with a support plate across one end) so as to offset and support a ladder top from a roof of any slope (pitch) or to pivot the support plate upward and support the ladder top a selectable distance from a vertical wall or to further pivot upward and place the support plate between the ladders rail tops and any fragile siding to protect the siding from damage.A pair of adjustable length pivotal upper arms connected to a pair of adjustable length pivotal lower arms. The upper arms control the distance from ladder to support plate while the lower arms control the angle of the upper arms (and support plate). The pivotal action allows a simple change from one support position to another.A second configuration uses an optional support plate to support the ladder top from the peak of a roof.In a third configuration, the M.U.L.S.A.

Abstract: A worker operates a winch having a handle located below a fully deployed net from a protected position in which the net shields the worker from injury. A curtain is mounted either above or below the net on support structures therefor for joint movement with the net. A close-in bracket brings the inner edge of the net closer to an outer face of a building under construction.

Abstract: A telescoping derrick has a safety line which is attached to a harness which secures to a worker to be used while climbing the ladder of the derrick. Telescoping tube sections are mounted to the derrick for extension and contraction with the derrick sections. The line is trained over a pulley attached to the crown of a derrick, then passes into the telescoping tube. The line is connected to a counterweight located in the telescoping tube. The line and counterweight remain inside the telescoping tube during rig up and rig down of the derrick.

Abstract: A draft/copy holder including a plate shaped draft/copy holding arrangement with a fastener arrangement adapted to enable a fastening of the draft/copy holder on a support and carrying device. A portion of the plate is bent through an oblique angle so as to produce a side edge of the draft/copy holder, with the angle being preferably less than 90.degree. and with an angular range extending between 40.degree. and 75.degree.. A detachable locking arrangement is provided on the bent portion of the draft/copy holder, with the locking arrangement being adapted to grip into correspondingly shaped locking arrangements provided on the support and carrying device.

Abstract: A work station for mounting to the side of a vehicle to aid a mechainc in reaching the engine compartment comprising a platform surface, four legs movably attached to the platform so that the height of the platform is adjustable, a brace attached to the platform to space the platform away from the side of the vehicle, and mounting means for attaching the platform to the side of the vehicle so that the platform does not move during use.

Abstract: The self-raising work platform assembly includes a pair of spaced towers adapted to be erected alongside a building structure, sleeve members surrounding and guided along the respective towers, joists extending between and releasably hooked to the sleeves, a flooring supported by the joists and chain blocks carried by the sleeves. The chains can be hooked to the tower to raise the sleeves, the joists and the flooring, to the level at which work on the building is to be effected.

Abstract: A step-up bracket is provided to extend laterally from scaffolding to aid in providing, in conjunction with a plank, a work platform protruding laterally from the scaffolding. The step-up bracket includes a vertical base to be secured to the scaffolding, and a horizontal seat supported by a diagonal brace extending from the seat to the base. An extension portion is provided which is secured beneath the seat and extends laterally so as to be aligned with the extremity of the seat.

Abstract: A safety anchor including a pair of rectangular plates connected by a spring-loaded hinge assembly which normally biases the plates toward one another in a completely folded configuration. Each plate defines an aperture aligned with the opposing aperture when the plates are completely folded together. A double locking safety hook may be clipped through the apertures, and prevents the plates from being unfolded. Each plate includes a retention post fixedly attached thereto and extending outwardly beyond the rear edge of the associated plate. Each retention post has an enlarged head with two flat surfaces. The flat surfaces may be aligned with the slot in the beam and inserted therethrough into a recessed cavity when the plates are completely unfolded. When the plates are then folded together, the retention posts rotate relative to the slot and the enlarged heads become engagingly retained within the recessed cavity and behind the narrower slot.

Abstract: A single run or extension ladder particularly suitable for use where electrical safety is significant. Stiles 6 are each formed from a pair of elongate hollow members 5 fabricated from glass-fibre material. Rung supports 7 are formed from an aluminium extrusion comprising a pair of piped edge sections 8 separated by a pair of webs 9 in the nature of a box-section 10. The elongate members 5 extend through and are attached to the edge sections 8 by an adhesive. The rung supports 7 thus space the elongate members 5 adjacently apart to form a stile 6. The ends of rungs 12 are mounted in laterally aligning apertures 14 in the webs 9, the end of a rung 12 being crimped back onto an outer of the webs 9. End caps or feet 16 are provided on the stiles 6. An extension ladder is formed in conventional manner, to that end, saddles 18 telescopically captivate a pair of such single run ladders together.

Abstract: A ladder apparatus including a plurality of spaced parallel ladder legs, with each ladder leg telescopingly mounting an extension leg relative to each ladder leg to accommodate uneven surface conditions. Interlocking structure is provided to secure each respective extension leg relative to a receiving cylinder relative to each ladder leg.