Abstract: A traveling step structure is mounted to a warehouse rack to allow convenient access to elevated shelves without blocking shelving corridors. A rack track is mounted to a rack between vertical rack members and a support track is fixed to the surface which supports the rack. The traveling step structure has a first frame mounted with followers to the rack track, and a second frame positioned outwardly from the first frame, and connected to the first frame for movement from a retracted position to an extended position. A plurality of steps extend between the first frame and the second frame and are pivotably mounted to both frames. When a user desires to access an elevated rack shelf, the second frame is pulled outwardly and downwardly to bring the steps into a horizontal position. A damper assembly is mounted between the first frame and a step to cushion extension.

Abstract: An assembly for installation, repair, or maintenance of balcony-mounted displays. The assembly may include a straddling component or frame, an anchoring assembly for selectively fixing one end of the straddling component in a desired location along the balcony, and a person-holding structure suspended from the balcony by another end of the straddling component. The straddling component may include forward vertical supports extending from the person-holding structure, horizontal supports attached to the forward vertical supports, and aftward vertical supports attached to the horizontal supports. Transport wheels may be rotatably attached to the aftward vertical supports, for rollable relocation of the platform relative to the balcony. The anchoring assembly may include both forward and aftward extension pieces attached to the aftward vertical supports and selectively adjusted to cooperatively fix the aftward vertical supports between a balcony wall and a heel-kick surface below the balcony seating.

Abstract: An equipment (1) for demolishing a building (2), wherein said building (2) comprises a building base (3) placed in proximity of a ground (4), or placed on the ground (4), and an opposite building top (5) or temporary building top (5) arranged away from said building base (3), as well as building floors (6), comprises: —a platform (7) adapted to be positioned against the top of the building (5) avoiding ground support devices which from the platform (7) reach the base of the building (3) or the ground (4) surrounding the building; said platform (7) comprising at least one working scaffold (8) adapted to be arranged along the periphery (9) of said building (2) and to face at least one floor (6) of said building (2); —said at least one working scaffold (8) being supported, hanged, on said platform (7) so that it descends along the side wall (10) of the building (2) to border the works for demolishing the building (2).

Abstract: A portable fall prevention apparatus. The apparatus provides points of attachment for a tether line to which a safety harness worn by a workman on a sloped roof can be attached. A pair of grapples attach to opposite, overhang portions of a sloped roof. A tie down strap threaded through a ratchet tie down connects each of the grapples to oppositely-disposed, oppositely-directed hinge plates of an anchor assembly. With the anchor assembly placed transversely across the ridge of a sloped roof and the tie down straps tightened to eliminate slack therein, the anchor assembly provides a secure point of attachment for a tether line.

Abstract: A ladder system includes an overhead track system, a ladder, a latch and a carriage. The overhead track system includes a first guide track and a second guide track. The carriage is operatively configured to move longitudinally along the first and second guide tracks and to move laterally between the first and second guide tracks. The ladder is pivotally mounted to the overhead track system. A lateral carriage brake is provided which prevents lateral movement of the ladder, and a longitudinal carriage brake is provided to prevent longitudinal movement of the ladder. The latch is operatively configured to affix the ladder to the carriage.

Abstract: A truck (136) has a sleeper cab (138) in which a bunk (140) is elevated from a floor (72) of the cab. A cabinet (110) is adjacent an end of the bunk. A track (146, 148) runs on the cab floor from inside the cabinet to outside the cabinet. A set of stairs (42; 242) are movable along the track from a non-deployed position inside the cabinet to a deployed position that allows a person to ascend and descend the stairs for climbing up into and climbing down from the bunk. A releasable locking system (150) locks the stairs in the deployed and non-deployed positions. A handle (158) can be pulled to unlock the stairs from non-deployed position and move them to deployed position. The handle can be pushed to unlock the stairs from deployed position and move them to non-deployed position.

Abstract: Fire escape apparatus comprising a main elongated hollow tubular member with an elongated slot and a relatively short auxiliary tubular member of similar construction. The main member is mounted on an exterior building wall and the auxiliary member extends therefrom to a building opening such as a door or window. A spherical member at the end of a flexible connecting line running to a building occupant is entered in the auxiliary tubular member and is controlled in its descent by frictional engagement with gradually arcuate spring-like members.

Abstract: A track ladder that includes a ladder frame, plurality of steps secured to the ladder frame and a carriage assembly secured to the ladder frame. The ladder frame rides on an upper track and a lower track and adapted to move in a horizontal direction and pivot about a vertical axis.

Abstract: A ladder support system, comprising a free-standing frame having an upper and lower horizontal member, and a ladder that is supported on the upper horizontal member and lower horizontal member. The frame further has a pair of ends which each have two legs joined by a top joint which forms an acute angle between the two legs which are both perpendicular to the upper horizontal member, which is also attached to the top joint. The upper horizontal member is parallel to the lower horizontal member. The ladder has wheel assemblies which engage the upper horizontal member and lower horizontal member so that the ladder may move laterally along the frame. A movement mechanism comprises a pair of end pulleys located at the ends, and a rope having a pair of rope extremities. The rope is threaded through the end pulleys with the rope extremities available to a workmen on the ladder, so that the workmen can move the ladder laterally along the frame without climbing down the ladder.

Abstract: The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly having a pair of pivotally mounted frames. The ladder is connected to one frame and may move longitudinally along the front face of the storage rack. The ladder and its frame may also be moved laterally in an arc up to 90.degree. in a direction extending perpendicular to the front face of the storage rack. The carriage assembly includes a horizontal ladder support arm on the first frame upon which the ladder is mounted. A user can quickly and easily position the ladder at any position along the storage rack for accessing items stored on the shelves. This ladder system is particularly useful in crowded warehouse-type retail outlets which are now in popular use across the country.

Abstract: The ladder system is located adjacent the front face of a storage rack. The ladder is carried by a cantilever supported carriage assembly. The ladder may move longitudinally along the front face of the storage rack and may also be moved laterally in a direction extending perpendicular to the front face of the storage rack. The carriage assembly includes a horizontal ladder support track upon which the ladder is mounted by means of two sets of rollers. With such a construction, the ladder may pivot about the support track to avoid obstructions in the aisle or projecting from the storage rack. In this way, a user can quickly and easily position the ladder at any position along the storage rack for accessing items stored on the shelves. This ladder system is particularly useful in crowded warehouse-type retail outlets which are now in popular use across the United States of America.

Abstract: A tree stand consists of mounting structure and a platform member, the platform member being rotatable about the mounting structure to permit facile reorientation without need for dismounting by the occupant. The platform member may itself provide the necessary seating and standing areas, or those parts may be provided as a separate assembly.

Abstract: A movable support structure from which a window washer is suspended that utilizes the parapet wall of a building as a support or runway by directing the force applied by the weight of the washer downwardly into the parapet wall. An upright frame above the parapet wall extends upwardly in substantially the same vertical plane of the parapet wall. The upright frame is supported on the parapet wall by a first set of wheels that rest on the wall. The upright frame may be further maintained on the roof by a second set of wheels that rest on the roof. The wheels roll along the roof and wall to facilitate horizontal movement of the apparatus. The horizontal movement is guided by internal and external guide rollers that engage the respective surfaces of the parapet wall. In addition, a ladder depends over the edge of the wall such that a window washer may safely step over the parapet wall and into a position to begin cleaning.

Abstract: Device and method for transporting and distributing materials and/or equipment at the periphery of a building by using a carrier structure similar to a scaffolding or to a working or circulation walkway filled with a parapet including a carriage having at least one sliding or rolling member connecting the carriage to at least one longitudinal solid element of the parapet said connection transmitting to the parapet at least the resulting efforts equivalent to the horizontal component of the force diagram of a device.

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: A work apparatus for a work on a wall surface of a structure, e.g., a building, comprises rail supports secured fixedly to an upper end portion of a structure, upper provisional horizontal rails supported provisionally on these rail supports, lower provisional horizontal rails mounted provisionally on a lower portion of a wall surface of the structure in parallel with the upper provisional horizontal rails, upper horizontally running trolleys mounted slidably on the upper provisional horizontal rails and connected to one another, a working platform, e.g.

Abstract: The invention relates to a vertically and horizontally movable work platform 4 for carrying out renovations to the concrete on reinforced concrete buildings or for replacing the structural protection on steel constructions. To increase the operational safety these work platforms 4 are held against the surfaces 1 of the buildings by attached magnetic plates 6. Since the tensions cables previously required are dispensed with, the weight of the upper carriage 2 from which the work platforms are suspended by cables is considerably reduced.

Abstract: A multiuser high-rise building fire escape device includes a basic bearing frame assembly alternatively mountd on the roof or either floor of a high-rise building, and several cabins mounted on the tracks of the basic bearing frame assembly and suspended therefrom through a steel rope combination. The cabins each comprises a speed reducing gear to smoothen the down stroke speed of the cabin, a motor assembly to drive the steel rope to wind up so as to lift the cabin, a mid-way stop mechanism to stop the cabin during down stroke, and a ladder door to control the access of the cabin and to serve as a bridge for striding over the cabin and an intermediate floor of a building.

Abstract: A work cradle comprising a work platform suspended by ropes from a building. Two guide ropes extend downwardly on either side of the platform and are secured to the building. The work platform is attached to the guide ropes by two further ropes which are slidable along the guide ropes by means of releasable hooks. The ropes pass over respective pulleys attached to an extension projecting from the platform in a direction away from the building. A winch is provided for each rope to apply tension to the ropes by means of which the platform may be prevented from swinging away from the building, and/or may be moved to a different lateral position, at a given suspension height.Also disclosed is a beam clamp which may be used with the above-described work cradle.

Abstract: A rolling safety trolley for traversing the upper circumference of an open tank having a top ledge comprises: a frame having an upright member and at least one cross member, and preferably a plurality of cross members, an outer wall roller affixed to the extremity of each of said crossmembers and adapted to engage and roll along the outer wall surface of said tank, a hooked member affixed to the uppermost portion of said upright member, a top ledge roller affixed to said hook member and adapted to engage and roll along said top ledge, and an inner wall roller affixed to said hook member and adapted to engage and roll along the inner wall of said tank.

Abstract: A wheeled scaffold for roofing materials has a framework for carrying the roofing materials. The framework includes a row of steps extending along the framework. First and second wheels are secured to the framework. The first wheels support the framework on roof purlins, while the second wheels are arranged to run along the upper side of the roof purlins. The first and second wheels can be adjusted to accommodate different spacings of the roof purlins. Work platforms are secured to a side of the framework, to enable a person to secure roofing materials in position without leaving the scaffold.

Abstract: A work scaffold system including a frame structure having spaced, parallel upper and lower horizontal track members upon which a pair of vertical column members may be horizontally moved. The vertical members have tracks for the vertical movement of worker cars. The structure supporting the horizontally and vertically movable worker cars are positioned in a desired location adjacent the face of a building by a truck crane or the like which is attached to the scaffold system by a hydraulically powered knuckle assembly attached between the crane head and the scaffold to provide control of both horizontal and vertical axes of rotation for proper attitude alignment of the scaffold.

Abstract: A manually portable, movable, bosun chair support apparatus comprising: a frame member with rollers mounted to the underside which rests on the top ledge of a building wall; an adjustable U-shaped member with arms extending downwardly, one on the inside and the other on the outside of the building wall; a first and second adjustable roller means operatively attached to each of said downwardly extending arms such as to make contact and roll along the inside and the outside of the building wall, respectively; and a hook means attached to the lower end of the outside arm for tieing a rope thereto. Such an apparatus is useful for suspending a workman seated in a bosun chair tied to the apparatus without making permanent or damaging contact with the roof of the building, yet affording the workman ease of movement along the exterior wall of the building as well as affording essentially instantaneous manual installation, removal and repositioning.

Abstract: An emergency rescue system for use in rescuing persons trapped in the upper floors of a multistory building during emergency conditions such as during a fire or the like. The rescue system comprises a rescue gondola suspended alongside the exterior face of the building by a suspension cable. The suspension cable is secured to a carriage at the top of the building wherein the carriage includes means for adjusting the length of the suspension cable to adjust the elevational position of the gondola, and the carriage is movable along a track at the top of the building to adjust the lateral position of the gondola. In one embodiment, a tension cable is removably secured between the carriage and a fixed point near the base of the building and is received over the exterior face of the gondola to steady the gondola and to urge the gondola inwardly toward the building.

Abstract: A scaffold has features that allow it to be supported vertically by connecting it to a building. The scaffold includes a pair of legs. Each leg will telescope to vary the length of the leg. A rail interconnects the legs. A worker's platform is carried by the rail below the rail. Rollers connected with the platform allow the platform to roll along the length of the rail. An adapter mounted to the top of each leg will insert under a depending member of the building roof to hold the legs vertically. The adapter is urged upward by a spring to maintain engagement.

Abstract: A work staging scaffold system comprising an open movable structural frame with horizontal track members mounting one or more sets of carriages that support one or more associated traverse tracks carrying vertically movable worker cars and also workpiece cable hoists.

Abstract: A scaffolding apparatus has features that are easy to carry and easy to assemble. The scaffolding apparatus includes a pair of legs that are connected together by a horizontal rail. Standoff means supports the scaffold against the building, with the legs inclining toward the building and the rails spaced away from the building. A worker's platform is carried by the rail below the rail and for movement along the rail.

Abstract: A mobile scaffold has a carriage for traversing longitudinally a first track and a second track. The carriage is suspended from the first track. Lateral support for one side of the carriage is provided by the second track, and this track is spaced vertically from the first track. A parallel arm type crane has one end mounted to the carriage on a side that is opposite from the side adjacent the second track. Attached to the end of the crane extended outwardly from the carriage is an operator's platform. The crane can swing to position the platform both in elevation and in a direction lateral of the carriage. The carriage has a vertical drive shaft with a horizontal wheel mounted thereon for contacting the second track. Bearings fit about the vertical drive shaft and the end of the crane is attached to the bearings so as to swing about the drive shaft.

Abstract: Packets of long metal roofing panels are transported on the skeletal structure of a pitched roof by a carrier structure with an elongated skeletal frame spanning the purlins which run the length of the pitched roof. The carrier structure comprises wheel structure on each of several adjacent purlins, with each such wheel structure comprising multiple sets of pairs of a horizontal axis wheel and a vertical axis wheel.

Abstract: A hoisting apparatus mounted on a building structure has parallel-extending upper and lower tracks attached to the building structure and supporting a respective upper and lower traveling block movable thereon by a propelling device, a hoisting cage supported by and between the traveling blocks and a hoisting device for raising or lowering the cage between the traveling blocks.