Abstract: A substantially one-piece ladder attachment is disclosed. The attachment provides a secure, laterally well-supported platform on which a worker would stand. The invention is particularly useful for an extension ladder, especially one with circular rungs. The attachment of the invention comprises a platform having a single, hollow, vertical support member projecting from one edge thereof. The vertical support is centrally disposed on the edge on which it is located. The vertical support angularly projects from the platform and is connected to an arcuate, horizontally disposed, transversely mounted upper bracket. The upper bracket is intended to engage the rung of a ladder to impart lateral stability to the platform. The attachment further includes a lower, horizontally-disposed arcuate bracket which is securely mounted to the same edge of the platform as the vertical support.

Abstract: An adjustable roof support apparatus (10) for pitched roofs (100) including a horizontal platform member (14) and a vertical panel member (20) operatively secured together by fastening members (30) in a variety of angular dispositions so that the horizontal platform member (14) will be oriented parallel to the ground regardless of the angle of pitch of the pitched roof (100).

Abstract: An adaptor bracket for rotatably securing a retractable lifeline block to a corner casting on a cargo retaining frame wherein the bracket has a locked position when it is secured to the corner casting and an unlocked position for removal from the corner casting. The bracket includes a twist lock which is spring-biased such that insertion of the twist lock into an opening in the corner casting automatically turns the twist lock to the locked position. Manual pressure and rotation of the twist lock placed it in the unlocked position for removal from the corner casting. The adaptor bracket and the retractable lifeline block are rotatable relative to the corner casting when in the locked position. Also disclosed is a standard method of using the adaptor bracket at a work site.

Abstract: An improved intermediate support is provided for ensuring the safety of a worker while moving relative to a fixed structure at elevated locations, with the worker being secured by a lanyard to a safety or fall restraint cable. The intermediate support is secured to the fixed structure, and includes a supporting plate having a notch along the periphery thereof for receiving the safety cable, and a pair of opposing hook members positioned on opposite sides of the supporting plate. The hook members prevent the safety cable from inadvertently or intentionally moving out of the notch. The method of the present invention ensures that an end of the lanyard secured to the safety cable may be quickly and easily moved sequentially past one hook member, then the supporting plate, and then the other hook member to allow the worker to efficiently and safely move past the intermediate support.

Abstract: A tackle box holder of the present invention comprises an elongate support member, a bracket for pivotally connecting one end of the support member to the pedestal of a boat seat for swinging movement of the support member on a first generally horizontal axis, and a mounting structure at the other end of the support member for mounting a tackle box for pivotal movement of the box on a second generally horizontal axis extending in side-to-side direction with respect to the tackle box. The support member, when pivotally connected to the pedestal of a boat seat, pivots on the first generally horizontal axis between a lowered position in which a tackle box mounted on the support member is adapted to rest on a supporting surface, such as a boat deck, and a raised position in which the tackle box is adapted to rest on the lap of a person sitting in the boat seat.

Abstract: A folding step ladder of multipart construction that is extendable from a standard base height to a series of heights incrementally greater than the standard base height, and that is composed of four ladder elements; an upper-front element joined to an upper-rear element at a top hinge-step, a lower-front element slidingly joined to the upper-front element along its length, and a lower-rear element slidingly joined to the upper-rear element along its length. The lower elements captively slide along the length of their corresponding upper element and are capable of being held at a particular incremental extension by a latch arrangement that engages the upper element when downward force is exerted on the ladder.

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: A device having two C-shaped hooks and a connecting tether enable a person to assume a seated position within a swimming pool while cleaning the waterline zone of the side wall of the pool. The hooks are precisely contoured so that, when placed in angled relationship to the side wall, the lower end of the hook abuts against the side wall of the pool, and the upper portion of the hook rests upon a horizontal deck surface that surrounds the pool.

Abstract: A displaceable platform which can be advanced sectionwise on a wall has support shoes (11) which are securable to the wall (12) at specific intervals in the direction of advance, at least two carrier rails (13) which are arranged spaced apart alongside one another and which extend along the wall (12) between at least two support shoes (11) in each case, and at least one displaceable bracket arrangement (14) which is arranged for displacement in the direction of advance and is fixable on at least two adjacent carrier rails (13), with the carrier rail (13) and the displaceable bracket arrangement (14) being alternately displaced upwardly.

Abstract: A metal construction for a ladder includes two spaced apart side rails and a plurality of rungs attached at their ends to the side rails. The side rails each include a generally rectangular side rail tube having angularly disposed reinforcing webs integrally formed within the tube. A plurality of weight reducing apertures are formed in the sidewalls of the tube and are longitudinally spaced at predetermined intervals. The rungs include a tube with an integral reinforcing web extending parallel to the sidewalls of the tube. A portion of the sidewalls of the ladder rung tube are removed by milled slots. The rungs are pivotally attached to the side rails to allow the ladder to be collapsed down to a folded condition.

Abstract: A foldable ladder including a foldable support frame mechanism and a head step assembly releasably mounted to the support frame mechanism. The head step assembly comprises a pair of base plates each having protuberances on both sides thereof and a number of step plates each having holes complementary in shape to the protuberances on the base plate. Two step plates and one base plate can be stacked together side by side through protuberance and hole engagement to form a bundle which can be stored within the support frame mechanism in its folded position.

Abstract: This invention relates to a device for automatically securing a climber climbing a wall, wherein it comprises:a shaft guided in rotation,at least one drum comprising a groove for receiving a line wound around the drum at least once,an irreversible control member interposed between each drum and the shaft preventing a relative rotation between the drum and the shaft in a first direction and allowing rotation of the drum in a direction opposite the first direction,a system for continuously taking-up the slack of the line,and a means for controlling rotation of the shaft in a direction opposite that allowed by the irreversible control member, enabling the climber, who has fallen, to descend.

Abstract: An A-frame ladder comprises two side rail assemblies and a platform guard rail assembly each provided in their rail members with elongate oval apertures defining handholds or hand grips. Steps of the side rail assemblies and the platform of the platform guard rail assembly are formed with elongate openings for draining water from the upper surfaces of the steps and the platform and for augmenting the gripping of users' feet by those upper surfaces. The steps are connected to the side rails by snap lock pins and the side rail assemblies are connected to guard rail members of the platform guard rail assembly by twist-ock pins, whereby an outer side rail assembly may be removably disconnected from the platform to prevent access to a swimming pool by youngsters. Brackets are attachable to the guard rail members of the platform guard rail assembly for connecting the platform guard rail assembly to sections of a perimetrally extending fence, whereby the ladder becomes an integral part of the fence.

Abstract: A tree stand having a weight bearing platform and a gripping frame hingedly joined thereto utilizes a pair of variable length suspension braces connecting the outer end of the platform to the gripping frame. By varying the length of the braces the platform is leveled while positioned on the tree. The hinged construction also allows for easy folding of the stand for storage and transportation.

Abstract: Apparatus for lowering a passenger-carrying gondola from a high-rise building includes a vertical shaft or chute having a vent opening at its upper end, a vent opening at its lower end, and an air motor at its lower end suitable for either delivering air into or removing air from the chute. A passenger-carrying gondola is mounted in the chute such that as it descends under the influence of gravity, it compresses the air beneath the gondola to a pressure depending upon the position of the lower vent. If the lower vent is totally closed, the gondola creates an air cushion which can be controlled to slowly lower the gondola. The descent of the gondola can be retarded by closing the upper vent to create a vacuum above the gondola. When the gondola is descending from a relatively high-rise position, the air motor can be activated to remove the air cushion beneath the gondola so that it descends at a rate greater than a free-fall.

Abstract: This relates to a swing scaffold assembly comprising a plurality of frames disposed in alignment with each other in spaced apart generally parallel planes. Each such frame includes a lower cross beam and a secondary frame structure supported on an intermediate section of each said cross beam. Opposing end portions of each cross beam extend outwardly from the intermediate beam section. A pair of uprights are each connected to and extend upwardly from the opposing ends of each cross beam. An upper cross member spans the distance between and is interconnected to the upper ends of each pair of these uprights. The secondary frame structure for each frame is arranged such that when the frames are in their spaced apart parallel positions they serve to provide a plurality of raised centrally located supports upon which longitudinally extending planks or the like may be laid thereby to provide a raised central bench for supporting building materials at a height convenient for masons and the like.

Abstract: A safety ladder is disclosed. The safety ladder comprises at least two legs each of which containing a smooth longitudinal blind bore, a steel hollow pipe having an outer surface and being smoothly disposed in the longitudinal blind bore while providing additional strength to the at least two legs, a rod disposed concentrically in the steel hollow pipe and vacillating up and down therein without any hindrance so that its ease of operation is increased, a solid piece of steel drilled and tapped so as to contain a throughbore that will accommodate the steel hollow pipe, and a flat steel plate affixed to the solid piece of steel and containing a skewly drilled hole so that the skewly drilled hole lines up with the outer surface of the steel hollow pipe.

Abstract: A hunter's portable tree stand that has an elongated platform assembly whose rear end is secured against the trunk of a tree. A pair of support arm assemblies have their front ends pivotally secured the front end of the platform assembly. A V-shaped clamping yoke passes around the trunk of the tree and its opposite ends are detachably connected to the respective rear ends of the support arm assemblies. A pair of upright brace members that pivot at the top, which the bottom is adjustable and secured to the rear end of the platform assembly and their top ends connected to the rear end of the support arm assemblies. The support arm assemblies have a unique structure which allows for adjustment of the angle that the platform assembly makes with the trunk of a tree even when the hunter is standing thereon.

Abstract: A safety attachment for a ladder is disclosed as including an extruded channel fixed to the top of the ladder with a screw shaft having left and right hand threads disposed in the channel, pole engaging arms extend from guides mounted on the shaft threads for movement of the arm to engage and disengage relative to the pole. A pulley fixed to the shaft rotates the same by means of a rope having ends extending toward the bottom of the ladder whereby the pulley may be operated either at the top or the bottom of the ladder.

Abstract: An apparatus and method for maintaining a tubular workpiece in position on a support, such as a ladder or the like, preferably comprises a pair of bodies adapted for connection to the support, with one of the bodies being positioned on either side thereof, such as to the stiles of the ladder. A clamping assembly including a clamping plate secures the bodies to the ladder stiles in a predetermined position on the ladder and at a predetermined angular orientation. Each body is provided with an upwardly facing slot having a width which decreases toward the lower portion of the body, with the slots being adapted to receive the workpiece therein. Downward movement of the workpiece into the slots results in frictional engagement of the workpiece with the slot walls to secure the workpiece in position. The workpiece is removed by exerting an upward force thereon and disengaging the workpiece from the slot walls.