Abstract: An extendible ladder includes a sealed housing for housing the ladder in a collapsed condition. The ladder mounts to a support wall such as the side of a home or an apartment building. The ladder is extendible during an emergency by opening the sealed housing which allows gravity to extend the ladder. Rollers are included with the ladder to prevent the support wall from interfering with the ladder as the ladder is extended. The housing may take the shape of an awning for mounting over a window in the support wall.

Abstract: A portable combination observation and hunting stand having a lower and middle ladder portion interconnected with each other with the middle ladder portion interconnected to a third, upper portion which comprises of a seat platform and an separate standing platform, all of which is abuttable to a tree or other support structure at a unique angle and is securely attached thereto by a chain or cable having a first end attached to the upper ladder portion at the end of the outer vertical upright then extending around the tree to a turnbuckle or load binder pivotally connected on the opposite side of the seat platform and adjustable according to the circumference of the selected tree or other support structure.

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: There has been very little improvement in pole climbing devices over the past one hundred years. A relatively simple, electrically insulating pole climbing device includes a solid, one-piece sole plate for attachment to the bottom of a boot or shoe, a side bar pivotally connected to one side of the sole plate for extending upwardly therefrom and carrying a top strap for connecting the device to the calf of a user, a metal gaff mounted on the side bar for engaging a pole, and an arm extending upwardly from the other side of the sole plate and carrying straps for connecting the sole plate to the foot and ankle of the wearer. The combination electrically insulates the gaff from the wearer, so that the possibility of an electrical shock is substantially reduced.

Abstract: A sit and climb tree stand uses a wedging tree engagement bar to provide for positive support in the tree with minimal tree damage. A self-locking leveling feature is provided which allows the user to adjust the level when at the desired elevation.

Abstract: A step-stool for enabling a child to climb up to the top surface of a cabinet made of a top piece, a bottom piece and a middle step or platform piece adapted to slide out from between the top piece and the bottom piece to form a step. Two T-shaped spacers, one on each side, provide a channel for the middle platform piece to move outward and form the step. Screws, nails, or nuts and bolts act as fasteners to fit through the top piece, the two spacers and the bottom piece to hold them together, leave room for the middle slidable platform piece to be pulled out and to anchor the step-stool to a cabinet or other floor. The components of the step-stool of the invention may be marketed as a kit, put together to form an unanchored step-stool or anchored to a cabinet or other floor.

Abstract: A sawhorse of the folding leg type, characterized by having three sets of outwardly folding legs that are held in the open position by three pairs of attached braces, that in turn are attached to a bar that runs parallel to the beam of the sawhorse, which bar allows a user to simultaneously open or close the braces and in turn open and close the legs of the sawhorse. The sawhorse is further characterized in that, once the braces are opened and locked, the sawhorse can be turned onto a side or either end, so as to support downward-bearing loads in any one of these orientations.

Abstract: A normally retracted escape ladder assembly that includes a framework mountable on a building wall, a plurality of ladder sections movably interconnected and having at least one such section attached to the framework, a platform, and a latch maintaining the ladder sections in a collapsed condition and actuated to release the ladder sections upon application of weight to the platform. The framework includes a wall abutment section and a ladder support section projecting therefrom. The platform is carried by the framework and is pivotally attached to either the wall abutment section or the ladder support section of the framework. Connected to the platform and carried by the framework is a latch which engages at least one of the ladder sections to maintain the ladder sections in a collapsed condition. The application of weight to the platform allows the ladder sections to assume an extended condition.

Abstract: A structure particularly adapted for erecting construction site scaffolding comprises an elongated lower frame pivotally joined to an upper frame. The lower frame is formed with a pair of radiused guide rails which interact with slide brackets of the upper frame when the lower frame is rotated above the pivot connection. The upper frame further includes two sets of spaced apart tube sections prepared to receive tongs of a forklift-type truck. The lower frame in turn has a series of downward extending, spaced apart retaining brackets. To erect a section of scaffold the erection structure first is raised by the forklift truck to allow upper cross pieces of scaffold end frame units to be secured in the lower frame retaining brackets. While these end frame units are hanging freely downward, they are joined together by crossing bracing to form a self-supporting first setional tier of the scaffold. A second sectional tier may be added by further raising the erection structure.

Abstract: A method adapted to support a workpiece to be sawed, and a board supporting assembly which is used with the method. The assembly comprises: a front board supporting means for supporting a front board means, a rear board supporting means for supporting a rear board means, and a connecting board supporting means which is adapted to support a rear board means and which is connected pivotally at a front end thereof to the front board supporting means and at a rear end thereof to said rear board supporting means in a manner that the board supporting assembly reduces in size in a collapsed position and has certain dimensional relationships.

Abstract: The present invention is directed to a safety anchor for mounting on the roof of a building. The safety anchor comprises an anchor member and a base for supporting the anchor member. The anchor member is provided with a closed loop extending from the base for attachment of the safety line and an elongate securing member in contact with the surface of the base. The anchor member is attached to the base by a plurality of points of attachment between the elongate securing member and the surface of the base. In a preferred embodiment of the invention, the anchor member is a U-shaped member securely attached to the base by a plurality of points of attachment between the arms of the anchor member and the surface of the base. The closed loop extending from the base is defined by the interior periphery of the anchor member extending from the base and the exterior periphery of the base between the arms of the anchor member.

Abstract: An improved ladder stabilizing device for supporting a ladder a spaced distance away from a substantially vertical surface is disclosed. The device of the present invention includes a U-shaped support bar which forms two parallel legs, the ends of which rest against the substantially vertical surface. The support bar is attached to a leveling device consisting essentially of a U-shaped channel. The ends of the leveling device rest against the side rails of the ladder and the support bar engages the U-shaped channel. The leveling device and the support bar are simultaneously attached to the side rails of the ladder. The stabilizing device is easily removable and holds the ladder a distance from the substantially vertical surface to provide a safe angle of support.

Abstract: A versatile hunting stand is provided which may be supported by a tree, ladder or tripod. The stand has a collapsible seat assembly which serves as a foot bar when used as a climbing stand. Adjustable arms may be used as a component of the climbing bar assembly or when a ladder is connected to the front of the stand, the arms may be used to brace the ladder. Instead of supporting the back end of the stand against a tree, tripod legs may be inserted into sockets in the stand.

Abstract: An apparatus is set fourth for providing a chair lift for vertical repositioning relative to an overlying support such as a tree or adjacent building. The apparatus includes a seat platform, including a lateral and longitudinal bar orthogonally and integrally mounted to the bottom surface of the seat platform. The lateral bar includes a plurility of arm rest posts integrally mounted thereto, with an arm rest mounted at an upper end of each post pivotally mounted to each arm rest post. The longitudinal bar includes a forward and rear "L" shaped yoke, wherein the forward yoke includes a light post mounted thereto. The rear "L" shaped yoke includes a lower spine link adjustably mounted thereto, with a back suport plate mounted to the lower spine link. An upper spine link is pivotally mounted relative to the lower spine link and in turn is pivotally mounted to an overhead link which integrally mounts a winch member to effect a lifting of the organization.

Abstract: A folding step structure (7) comprises an elongate base (11) to be laid on or parallel to a ground surface (1); a frame (15) connected to the base; a step (14) connected to the frame such that the frame and the step member are together pivotal, about pivot points (20, 21) towards one end of the base, between a first limit position in which the step is parallel to, and closely spaced from, the ground surface at a location towards the other end of the base, in which limit position the frame is closely adjacent the base, and a second limit position in which the step is supported above the base; and a bracing strut (24) for securing the step and the frame in the second limit position.

Abstract: An automatic levelling device for attachment to a ladder to allow the ladder to be used on an uneven supporting surface. The levelling device includes a downwardly opened U-shaped tubular member which guidably supports therein a ball chain connecting element. Slidable within the open ends of the tubular member and attached to opposite ends of the connecting element are extendable legs.A locking means is connected to the tubular member and is adapted to cooperate with the ball chain to provide positive locking of the chain when the extendable legs are in the proper position to maintain the ladder in a vertical orientation. The ball chain when locked in the locking means can not be unlocked unless weight is removed from both supporting legs.

Abstract: A device for the maintenance of large-capacity containers such as storage tanks or the like vessels is described, which consists of a scaffolding structure for accommodating a plurality of working platforms along the container wall, such scaffolding structure reposing swingably around the vertical centerline which is the rotation axis. For this purpose, the device is movable along the total peripheral area of the upper container wall. In three preferred embodiments, the device may consist either of a centrally supported pivot mounting supported on the container roof, which is horizontally adjustable and vertically settable around an air dome, or of a load-carrying support which is placed centrally on the container roof, or finally of a load-carrying support reposing movably on a uppermost container edge and a tank catwalk, such load-carrying support being composed in turn of a lattice carrier and a frame.

Abstract: An apparatus for temporary installation within a relatively large pressure veseel, especially a boiler-furnace for generating electricity, for facilitating the manual inspection and (if necessary) the repair of things within said pressure vessel. The apparatus includes a generally horizontal platform upon which workers stand, and cables for raising and lowering the platform. The platform is fabricated from relatively small construction elements, each of which has a size that permits it to be inserted through a small access opening in the pressure vessel. The elements are manually assembled within the vessel by pinning them together, using high-strength pins which engage a plurality of prepared aperture. A relatively large platform is constructed in a vertical mode, and subsequenctly rotated to its horizontal and working orientation.

Abstract: A self-leveling foldable saw horse including a trestle formed as a downwardly opening box, two pairs of legs, each of which has three working surfaces for leveling the pairs of legs, stably supporting the weight on the trestle and enabling rotation of the legs from a closed position to an opened position and two rods for supporting the legs. The first operating surface on each leg of a pair of legs is in contact with the first operating surface of the other leg of its pair and the second surfaces of each leg of pair are in contact with the underside of the top surface of the trestle when the saw horse is in the open position. Exerting pressure on the top surface of the trestle causes sliding adjustment of the first operating surfaces of each pair to level the trestle and stably support the saw horse on uneven surfaces. Two saw horses can be attached together in a compact, efficient manner with handles to transport the pair of saw horses for use on uneven ground surfaces.

Abstract: An extensible and retractable step assembly for a floor cabinet having an open rectangular base slidably mounted in an interior space at the bottom of the cabinet immediately above the floor and selectively positionable in the cabinet or in front of the cabinet, a step which fits inside this base, and slidable pivoted linkages connecting the step to the base and permitting the step to be raised up from the base when the base is extended in front of the cabinet.