Abstract: A ladder hoist device for hoisting material up an extension ladder. The ladder hoist device includes a device that is able to move materials up and down an extension ladder. The device has a back plate. The back plate has a front side, a back side, a top edge and a bottom edge. A support plate supports the materials. The support plate has an edge fixedly coupled to the front side of the back plate. A mounting frame has a plurality of rollers for guiding the back plate along the rails of the ladder. A plurality of brackets rotatably couple the rollers to the back plate. Each of the brackets is coupled to each other and to the back plate. The rollers engage the ladder. A pulley system pulls the back plate up the ladder.

Abstract: A mobile ladder (10) including a goods lift (12) which can be driven between upper (FIG. 3) and lower (FIG. 4) positions. The ladder has a default-immobile state which can be overcome by a force manually applied to a handle. The ladder can then be moved and steered via the handle.

Abstract: A default-immobile ladder (10) includes mobility means (12) displaceable between a ladder immobile position and a ladder mobile position in which the mobility means extends downwardly beyond the foot of the ladder and manually actuable means (32) for displacing the mobility means from the ladder immobile position to the ladder mobile position. When the manually actuable means is released, the mobility means returns to the ladder immobile position.

Abstract: An elevatable stand construction 10 for physically challenged hunters which includes a ladder style main framework member 20 supported in an upwardly angled disposition, a chair style platform member 30 slidably disposed on the main framework member 20, and a mechanized unit 13 for moving the platform member 30 in an up and down fashion relative to the main framework member 20. The mechanized unit 13 may comprise a manual version 40 or a motorized version 50.

Abstract: A lifting device for raising a load intended for support by a roof of a building utilizing a ladder. Device includes a sled having first portion for slidingly contacting the ladder and a second portion providing a platform for a load. The sled is movable along the ladder generally in an up and down direction. A brace member connects to the ladder end, adjacent the roof. The brace possesses a flange which contacts the roof. An arm rotatably connects to the brace. The brace arm includes a first support surface for the sled when the arm is rotated toward the roof and a second support surface for contacting the roof. The sled is motivated along the ladder by motivating mechanism such as a crank operated cable.

Abstract: The present invention comprises a platform for an aluminum extension ladder which platform is adjustable upwardly and downwardly, and is pivotable between a pair of side frames, to permit a user's foot a comfortable support, in addition to the ladder rung to which it is attached.

Abstract: An apparatus having first and second floor plates defining a floor opening to receive a ladder therethrough is provided, with the floor plates having first and second side plates mounted to opposed ends of the floor plates, with the side plates arranged in a parallel coextensive relationship. At least one of the side plates includes a support container, and optionally, both side plates may include support containers hingedly mounted to permit pivotment together in adjacency forwardly of the apparatus. Roller structure is mounted interiorly of the side plates to guide and direct ladder legs of the ladder within the floor opening. Further, a brake lever is arranged for engagement relative to a rear wheel guide for selective positioning of the organization relative to the ladder. A floor hook cooperative with a ladder rung pulley for selective securement to an associated ladder rung is arranged to permit selective lifting of the carriage apparatus relative to the ladder.

Abstract: An adjustable ladder comprising, a pair of side supports, a device for retaining the supports in a spaced relationship, a rung, a device for slidably mounting the rungs in the supports, and a device for moving the rung along the supports for adjusting the position of the rung.

Abstract: An apparatus wherein a base plate mounts a plurality of base plate tubes, each mounting stabilizer legs, wherein the stabilizer legs are provided to include leveling screws to provide leveling of the associated apparatus relative to an underlying support surface. A guide track including a gear rack is arranged to cooperate with a drive gear structure rotatable by use of a reversing electric motor to effect raising and lifting of an associated platform in cooperation with the drive gear structure with the gear rack. An extension guide track, including an extension gear rack, is arranged to be affixed longitudinally aligned with the gear rack structure to effect extension of effective length for raising and lowering of the associated platform.

Abstract: A ladder adaptable platform for attachment to a typical extension ladder which has a pair of parallel side rails and spaced rungs. The ladder adaptable platform has a platform surface which is engageable at the backside of a desired rung, the platform surface having side frames which each articulably support rail engaging channels. The ladder adaptable platform may be moved up or down the ladder by lifting the platform from engagement with its rung, sliding the channels up or down the ladder rails to a new desired rung to which the platform surface may be engaged.

Abstract: The present invention relates to an improved adjustable scaffolding assembly and is seen to include an adjustable scaffolding supporting device, a roller assembly, and a peak stabilizer bar assembly. The adjustable scaffolding supporting device is adapted to be slid along a ladder to permit positioning the scaffolding supporting device at a predetermined height and pitch with respect to the ladder. The roller assembly is mountable to the ladder and facilitates positioning the scaffolding assembly for use. The peak stabilizer bar assembly is also mountable to the ladder and is adapted to secure the scaffolding assembly while in position on a building roof.

Abstract: A combination ladder and carriage carried by the ladder for up and down movement to carry loads up the ladder at construction sites including building, repairs and the like at elevated heights. The upper ends of the ladder rails are extended in bow-like fashion so as to enable the ladder to reach over a roof or other elevated structure, and the carriage has a back wall of flexible construction enabling it to accommodate the bow-like ends of the ladder whereby to bring the load more closely to where it is needed.

Abstract: An adjustable platform for a rung ladder has a footplate which provides sufficient surface area to enable full contact by the users feet. A footplate support system enables the footplate to accomodate a range of angles of inclination of the ladder relative to the horizontal. The footplate support system is releasably secured to two parallel guides running length wise of the ladder, either as part of extruded ladder stiles or secured to stiles of an existing ladder, and is adapted to slide up and down the guides to engage the footplate with the desired rung of the ladder. Clamp means is provided to locate the footplate in the desired position.

Abstract: An erectable manipulator placement system for use on a space station and comprising an elongate lattice-like boom having dual guide tracks attached to parallel chords thereof, a carriage-like dolly movable along said tracks, and a segmented maneuvering arm-like assembly pivotally mounted on and extending from said dolly. The system further includes a turntable base pivotally interconnected with the proximal end of the boom and positioned either on a part of a transferring vehicle, or on another payload component being carried by said transferring vehicle, or on the space station.

Abstract: The present invention is a transportable hoist consisting of a twin-arm telescopic unit comprising a given number of rectangular telescopic elements, which can be extended longitudinally by means of a telescopic hydraulic cylinder. A carriage with a work platform is mounted on said twin-arm unit; the carriage and work platform are moved along the unit by means of two steel cables connected to a windlass. The carriage is equipped with an automatic emergency brake. The twin-arm unit is supported by a pivoting platform mounted on a self-propelled or towed vehicle. Two telescopic cylinders are used to set the angle of said unit during use.

Abstract: An elevating apparatus comprises an inclined elevator and a load-carrying carriage. The inclined elevator comprises a pair of guide rails, and the carriage is movable along the guide rails by means of a cable. The carriage is movable along the guide rails on rollers provided on rocker arms pivotally mounted on the carriage. The upper portion of each guide rail is angled away from the remaining portion of that guide rail, the upper portions of the guide rails defining a horizontal section of the elevator which constitutes a discharge position for the carriage.

Abstract: The invention relates to a load-carrying platform, particularly for moving furniture or the like along an inclined elevator. The load-carrying platform is supported by a carriage which is movable along guide rails of the elevator. Telescopic guides are provided between the carriage and the base of the platform, so that the platform is displaceable in relation to the carriage. Thus, when the unloading position is reached, the platform can be moved, at least partially, through a window opening and into the interior of a house.

Abstract: A portable folding platform apparatus is disclosed which may be removably mounted on an extension ladder having a winch removably mounted at the top of the ladder. The apparatus may be used to lift loads to the top of a house, to the different floors of a building, or onto a roof. The apparatus has a platform with a sliding top which may be used to carry a load. After the apparatus and winch are mounted on the ladder, the winch and cable are then used to pull the apparatus to the top of the ladder. The load may then be moved in a horizontal direction by the sliding top. Two diagonal struts and two vertical struts are used to support the platform. The struts are coupled to two side plates having rollers which allow the apparatus to move up and down the ladder. Guide blocks attached to the side plates assist in guiding the apparatus along the ladder. Two swing arms coupled to the apparatus and the winch have rollers which engage the top surfaces of the ladder.

Abstract: A service elevator, designed to carry persons up or down along a building wall or other structure, comprises a ladder secured to that structure and a carriage on which an endless conveyor band is supported. The band has projecting dogs engaging the rungs of the ladder which are held between a first stringer of circular cross-section and a second stringer of rectangular cross-section. The band-supporting frame has sleeves slidably engaging the first stringer and roller pairs bracketing the second stringer. A second conveyor band, serving as a standby for the working band, corotates therewith and has dogs slightly offset from those of the latter for dropping onto the rungs when the working band fails.

Abstract: A lift for moving a wheelchair over a stairway includes a ramp, a wheelchair supporting platform and a mechanism for operating the platform over the ramp. When the lift is inoperative, the wheelchair supporting platform can be removed from the ramp and the ramp can be stored such that it does not intrude into the stairway and the operating mechanism is inaccessible.

Abstract: Two frame sections are hingedly attached at their top and each frame section contains a pair of wheels at the bottom. One of the frame sections consists of a pair of laterally spaced parallel side rails having horizontal steps disposed therebetween. The other frame section contains a pair of parallel spaced channel bars on which ride a vertically movable platform. The platform can be hoisted along the channel bars by use of a hand crank and winch assembly. The two frame sections can be folded together for use as a conventional hand truck or the frame sections can be folded apart and the wheels locked for use as a stepladder.

Abstract: A cart bolted to a short bottom section of a ladder carries a winch. A cable on the winch runs over a pulley on a short top section of the ladder and is connected to a carriage having wheels running in channel-like side members of the ladder. The carriage has an adjustable, folding platform and a back which pivots to a horizontal position when the carriage reaches the top of the ladder. A bottom pushbutton control and a top pushbutton control are provided.

Abstract: An elevatable operator-actuated lifting device, including a lower support frame and a platform section telescopically interfitted with the support frame as to be elevatable with respect thereto. Hydraulically actuated piston and cylinder means are provided for telescoping and de-telescoping the platform section with respect to the support frame, to enable elevation and lowering of the platform section. Means moveable with the platform section, including a manually actuated hydraulic pump, enable pressurization and de-pressurization of the piston and cylinder means, to thereby enable raising and lowering of the platform section by an operator standing thereupon.

Abstract: There is provided a cam type braking device for a ladder lifter arranged so that as soon as the lifting wire rope for the ladder lifter is broken, a brake cam is pressed against the associated ladder rail, whereby the lifter is braked and it is securely stopped at the position on the rail which it assumed at the time of breakage of the wire rope, without causing any large fall of the lifter.

Abstract: Apparatus for aligning a work platform which is cantilevered outwardly and laterally on a carriage for movement up and down on parallel rails of an elevated tower is illustrated as including a pair of vertically spaced horizontal shafts carried by a first pair of wheels engaging an outside portion of a rail, each of said shafts having an adjustable eccentrically mounted wheel carrying portion with means for mounting the shaft in fixed position with respect to the carriage so that the eccentric portion of the shaft is in position to affect proper alignment for the wheels with respect to the rail to insure proper alignment of a second pair of vertically spaced wheels engaging an outside portion of the other rail.

Abstract: This invention relates to a device useful in connection with bridging two sections of an extension ladder. The device takes the form of a sleeve structure which extends from the side rail of one section of a ladder to co-operate with the side rail of another section of the ladder. The sleeve member is guided and maintained in position by cutouts formed therein which co-operate with ladder rungs. The sleeve member has a cam portion. The invention finds use in connection with facilitating the use of a hoist or the like used with an extension ladder, and provides a smooth track for the usual wheel or roller assembly on which such hoist travels.

Abstract: A working platform lifting apparatus for an aerial ladder truck, wherein the working platform movable up and down along the ladder is arranged so that it does not interfere with the extension and contraction of the ladder, that when it is stopped at any desired position it is automatically braked, that when it reaches its uppermost position it is automatically stopped and that in an emergency it can be lowered manually. Other merits and details of the construction will be made clear.

Abstract: A device for use with a high-altitude working vehicle provided with a vertically and horizontally revolvable and extensible ladder and an operator-carrying lifter movable up and down along the ladder, the device being characterized in that it allows the exension and contraction of the ladder only when the lifter is at a predetermined position, thereby securing safety of the operator riding in the lifter. Other advantages and details of the construction will be made clear.