Abstract: A selectively removable support platform is designed to be attached to the rungs of a conventional ladder. The platform includes pivotally interconnected arms which may be aligned with the hollow metallic rungs of the ladder, and connector pins pivotally attached to the arms may then be projected through apertures in the arms so as to be positioned within the rung interiors. Safety straps may then be used to lock the connectors in position, and platform alignment is facilitated through the use of a telescoping adjustable arm construction. Short safety chains may optionally be provided for connecting the platform to a gutter spout or some other building structure, and the front of the platform is covered with a rubber or foamed plastic material so as to prevent both slippage and damage to the structure against which the platform is resting. Additionally, the foam or rubber material provides an electrically insulative effect between the ladder platform and metal siding.

Abstract: A scaffold plank hanger is suspended from a rung of a ladder by hooks engaging such rung which are spaced apart less than the width of the ladder. Such hooks carry a crossbar of a length greater than the width of the ladder. A scaffold plank has hooks projecting from one end which are hooked over opposite end portions of the hanger crossbar between its ends and the adjacent ladder rails, respectively.

Abstract: A seat device for a ladder, which seat device comprises a frame, a first hook device extending from the frame and for fitting over a first rung of the ladder, a second hook device extending from the frame and for fitting over a second and adjacent rung of the ladder, a foldable seat extending from the frame and for enabling a person to sit down while working on the ladder, a support member for supporting the seat in an unfolded position, and releasable locking means for maintaining the seat in its unfolded position and for preventing accidental collapse of the seat to a folded position.

Abstract: One of the side walls of a tray is provided with a stepladder side rail engaging bracket which includes opposed diverging channel members. Such channel members rest, without any fasteners or the like, upon the exposed upper edges of the side rails or stringers which form one side of the stepladder. The angle formed by the diverging channel members approximates the angle formed by the diverging front and rear side rails of the stepladder when in the open position. The tray may be compartmentalized to carry tools or parts; alternatively it may be partially or totally free of compartments to support paint cans or buckets for other uses.

Abstract: A holder or attachment in box like form for use with a stepladder is provided. The box like attachment is provided with a connecting member secured to the bottom of the box with the connecting member being in the form of a tongue. The tongue of the box like member is adapted to reside or fit within the slots formed between support members on a foldable shelf which forms a part of a conventional stepladder and the box is adapted to hold wall papering equipment, cans of paint and tools such as hammers, saws, pliers and screw drivers.

Abstract: A two-position ladder platform designed for operation by a single climber so as to provide the climber with a broad foot support in its erected position and to retract to a recessed position to avoid impairing the climber. The device includes a platform section, preferably rectangular in shape, with platform hooks pivotally mounted along adjacent corners of the platform section. Leg sections extend away from other adjacent corners of the platform and terminate in a forked end. In the erected position the platform hooks engage a first ladder rung with the platform extending outward therefrom while the forked ends engage a ladder rung below the platform. The platform is capable of being inward over the first rung into a recessed position which avoids it becoming an obstruction to the user when climbing the ladder. The platform can be easily kicked back into the erected position to provide the climber with support after he climbs passed it.

Abstract: In a platform assembly for a slanted ladder wherein a base is hooked to the ladder and a platform is hinged to the base with a brace pivoted to the platform hold the platform substantially level, improved adjustment means are provided for accomodating different ladder angles characterized by coaxial pins movable simultaneously in opposite directions into and out of a selected pair of aligned holes in spaced side flanges on the platform.

Abstract: This invention relates to an improved safety platform for attachment to a ladder. The locking means of the device is engaged and disengaged without the use of tools or complicated mechanical means. This enables the user to adjust the height of the attachment on the ladder while standing on the ladder above ground level. The platform of the invention is fixed in a generally horizontal plane to hold containers or like articles, or for use as a platform for a person to stand upon while working. The invention is ideally suited for use by painters and like persons who do exacting work at varying heights above ground level while standing on a ladder.

Abstract: A paint pot carrier comprises a unitary moulded body defining a pot-receiving well (3). A hooking web (8) of the body enables the carrier to be hooked over a ladder rung (R), an inclined shoulder (14 or 15) bearing against an adjacent one of the ladder stiles (S). Two movable jaws (20,21) can be raised to clamp the rung from beneath against the web (8). To move the jaws, rack teeth (26) of the jaws are engaged by pinions (25) secured to a common drive shaft (27). Rack teeth of a drive bar (30) engage a toothed central portion (28) of the shaft (27), and manually operable means (34-39 or 48-60) enables the drive bar to be moved longitudinally to operate the jaws.

Abstract: A tray for use with ladders having hollow rungs opening to the side is disclosed, with the device being supported by a resilient member which is inserted into the rung and expanded against the inside of the rung by applying a compression force to the ends of the member, which holds the device firmly in place. The particular means for expanding the member disclosed herein uses the resilient characteristic of the member to "lock" the device in place.

Abstract: A work tray for mounting on hollow rung ladders. The tray has a single shaft which goes through one rung of the ladder. Lock means are provided to keep the tray from rotating or from pulling out of the rung. Angular adjustment means are provided so that the tray may be kept level when the ladder is used at different angles.

Abstract: A mounting clip adapted to engage the top platform of a self standing or step ladder, such clip configured to be engaged by a specially shaped opening in the body parts of a tool tray or toolbox; a T section bar member resiliently fastenable to the top platform of a step ladder for engagement by transverse openings or tunnels in toolboxes or tool trays for fixing such boxes and trays removably to the top platform of such step ladder; a toolbox with configured openings or tunnels transversely formed through the side and any interior walls thereof for engagement with a T section mounting bar resiliently clipped to the top platform of a self standing or step ladder; a T section bar member that inserts into and positively engages, by spring action, the walls of a T shaped slot or tunnel in the bases of members, boxes and containers desired to be fixed atop a ladder.

Abstract: An extension ladder workshelf apparatus for supplying a work area on extension ladders. Apparatus is attached by hooks which allows apparatus to be attached at any desired height.

Abstract: A portable ladder platform having locking and leveling features. A platform is provided which attaches to a standard rung type ladder through brace members, one of which is hook shaped for placement over a rung, and another, which is pivotable, moves under the rung to prevent accidental dislodgement of the platform in use. A leveling device is provided which allows adjustment for varying ladder angles.

Abstract: A platform for a ladder having rungs includes a frame and a step structure. The frame is arranged to detachably attach to at least one of the rungs of the ladder. The step structure is hingeably mounted to the frame for providing a footrest. The step structure is sized to swing upwardly and allow a foothold between the step structure and the frame. This foothold is supported by an intermediate one of the rungs.

Abstract: The present invention comprises an apparatus (10) for adjustably supporting diverse articles (16) on a stepladder (17). The apparatus includes in general an article securing means (15) releasably supported in a support unit (12), which is mounted for relative rotation with respect to a base unit (11). In addition, a releasable locking means (14) operatively controls the relative rotation between the support unit (12) and the base unit (11), and mounting bracket units (13) and (80) are also provided to securely engage the base unit (11) on the stepladder (17), either directly or indirectly.

Abstract: The present invention comprises an apparatus (10) for adjustably supporting diverse articles (16) on a stepladder (17). The apparatus includes in general an article securing means (15) releasably supported in a support unit (12), which is mounted for relative rotation with respect to a base unit (11). In addition a releasable locking means (14) operatively controls the relative rotation between the support unit (12) and the base unit (11), and a mounting bracket unit (13), is also provided to securely engage the base unit (11) on the stepladder (17).

Abstract: A bracket is adapted for mounting on a ladder (1) as the support means for a work platform as one or more planks. The bracket comprises an arm (2) as a seat for the platform, a carrying bar (3) adapted for being suspended in one of the rungs (4) of the ladder and engaging against a rung situated lower down, and a strut (5) arranged between the carrying bar and arm to support the latter substantially horizontally oriented. The strut has a hook means (6) for optional coaction with one of a row of notches (7) along the carrying bar. The arm is joined to the carrying bar at a first joint (9) and to the strut at a second joint (11). The second joint is movable and comprises two or more non-round and preferably like holes (14) along the arm coacting with a headed stud on the strut.

Abstract: A ladder support erectable onto a ladder for supporting workmen or materials. The ladder support includes a platform and at least two tensionable chain members. The platform is connectable in a generally horizontal position to a ladder rung, after which one chain member is interconnectable between one end of the platform and the upper adjacent ladder rung and another chain member is interconnectable either between the same end of the platform and the lower adjacent rung or the opposite end of the platform and the upper adjacent rung or both for added strength. The platform includes a lower plate connectable to the platform by screws, the mating of the two forming an elongated cavity into which a ladder rung is held. The plate mounting to the platform is adjustable so that the platform may be adjustably positioned fore and aft on the ladder rung.

Abstract: A platform for supporting paint, tools, and other articles is formed of first and second platform members which communicate with a side rail of a ladder tensively and compressively, respectively. Each of the platform members is provided with apertures therethrough, at least one of the members having slot-shaped apertures, for adjustably securing the platform members to one another. In a preferred embodiment, the platform members are provided with respective serrated plate members which communicate grippingly with the side rail of the ladder. The platform may be provided with a paint tray for accommodating a paint can, and a tool or article holder. The present platform can be located anywhere along the side rail of the ladder and does not rely upon the rungs. A safety arrangement includes a spring for applying a biasing downward force which reduces the possibility of accidental disengagement of the platform from the side rail of the ladder.

Abstract: A sleeve fits securely over a ladder rail with attached hooks over at least two rungs of the ladder. Attached to the side of the sleeve are a rigid hand rail and pivotable utility tray. Clips on the side of the tray hold tools. Supplies and tools are stored in the tray or the tray may be a paint roller tray. A slot or groove in either the sleeve or an extension of the tray permits tilting of the tray to a desired angle relative to the ladder. A bolt through one of the hooks secures the sleeve in place and permits the sleeve to be used upside-down on an opposite ladder rail. The sleeve may be constructed from a single sheet of material cut and bent into shape.

Abstract: A device capable of being mounted on a ladder having hollow rungs comprises a platform or tray having a first arm mounted thereon adjacent one end thereof and a second arm pivotably mounted thereon adjacent the other end thereof and extending below the platform or tray, said second arm being adjustable in length and said arms being adapted to enter the hollow rungs of a ladder. In use the first and second arms are inserted in separate rungs of the ladder, the second arm being inserted in the rung below the first arm.

Abstract: A support platform for a ladder is disclosed which is arranged to be assembled with eight bolts by placing a platform on to a pair of straps which have hook members at either end thereof. Further, a spreader bar, that serves as a handle, is fastened across the upper portions of the straps so that the upper portion is stiffened. A leg is spaced inwardly from the hooks at either end of the straps to provide guidance of the platform onto the rungs of the ladder; leg portions are elongated for the purpose of proper engagement with the rungs of the ladder.

Abstract: A ladder caddy particularly adapted for attachment to a step or extension ladder for containing work implements is provided. The ladder caddy comprises a container member including side edge portions adapted to engage associated ladder side rails, and a clamping member depending from the container member for clamping the ladder caddy to a ladder. The clamping member includes a first portion comprising a first support shoulder and first support flange generally normally depending therefrom, and a second portion selectively adjustable to the first portion comprising a second support shoulder generally opposite of the first support shoulder and a second support flange generally normally depending from the second support shoulder. Means are provided for selectively fastening the clamping member first portion to the clamping member second portion whereby the ladder caddy may be attached to a ladder.

Abstract: A step ladder work bench apparatus for significantly increasing the top shelf area on step ladders. Apparatus is hingedly attached to said step ladder allowing apparatus to be raised and hooked in place for use and lowered against step ladder rails for storage.

Abstract: A ladder attachment includes a telescopic cross-bar 1A, 2A the ends of which carry wheels 3A for engaging a wall on either side of the ladder. This provides stability and also sets the ladder back from the wall.The center portion 1A of the cross-bar has a pair of hooks 4A which hook over a rung 5A of the ladder and a pair of turnbuckles 9 which hook under a lower rung 12 (after which the turnbuckles 9 are tightened to secure the fixing). The turnbuckles are attached to a sleeve 10 carried by the bar 1A and have hooks 11.A platform assembly 30 can also be mounted on the ladder and connected to the ladder attachment by support struts. The platform assembly includes a support framework 32 in which slots 33 are provided to overlie two rungs 34 and a turnbuckle 35 tightens the framework against the ladder.The ladder attachment can carry a pulley by which goods can be hoisted to the person working on the ladder.

Abstract: A service platform for a ladder has a ladder rung locking means that provides support for a frame member upon which a user stands. A scissor-like action is produced about a bearing wherein one lever arm is an extended arm attached to the frame and the other lever arm is a support lever connected directly to the other support lever by a support bar which rests upon the side rails of the ladder. The ladder rung is inserted into slots formed in the extended arms, the bearings, and in the support levers. Rotation of the frame causes the slots to become misaligned thereby locking the ladder rung therein. The service platform can be stored on the ladder without interfering with its use.

Abstract: An adjustable paint tray support for use on a ladder having a bracket for attaching to one of the legs of the ladder is disclosed. The bracket contains a section for engaging one of the steps or rungs on the ladder. A support member for the paint tray is pivotally connected to the bracket. The support member has a raised portion at each end for engaging the paint tray. A clamp is positioned on the bracket to engage a portion of the support member to releasably secure the support member with respect to the bracket.

Abstract: An accessory aid device for a stepladder is disclosed which includes a sleeve 22 which is affixed to a ladder leg and a shank 28 corresponding in shape received in the sleeve which will slide but not rotate therein. A set screw 30 is received in a thickened wall 32 of the sleeves and positively sets the position of shank 28 which supports a utility shelf 34 for holding tools and the like and for aiding in the positioning of articles for overhead mounting.

Abstract: A platform accessory (20) for use with a straight ladder (22) includes a flat deck (40) adapted both to engage a lower rung (26L) of the ladder (22) and to connect to a higher portion of the ladder by a pair of resilient bracket arms (82). Lower portions (86) of the bracket arms are hingedly connected to the deck (40); intermediate portions (88) of the bracket arms (82) wrap around the ladder's side rails (24); and, upper portions (90) of the bracket arms are insertable into apertures formed in the side rails (24). In one embodiment, apertures (32) in the side rails (24) communicate with interior portions of hollow rungs.

Abstract: A carrier for tools, painters' supplies and the like, for use on the top of a folding ladder, is invertible, providing a selection between two tray-like receptacles of different depths having a common planar bottom which rests on the ladder top. The rectangular wall of the inverted tray portion holds the carrier securely on the ladder top. Handles, drawn upward to whichever side is presented upward and then inward, spring back and retract out of the way by gravity.

Abstract: A supporting device for ladders which has two supports which can be connected with rungs of the ladder by two connecting devices. The connecting devices form at least one pair of connecting parts which receive two rungs of the ladder in opposite direction, the connecting parts being at a variable distance from each other.

Abstract: A ladder support for attachment to a first inclined ladder in order to support a second ladder extending upwardly therefrom which includes a base which is attached to the first ladder and bridges a plurality of rungs, a platform hinged at one end to the upper end of the base for supporting the second ladder and a strut assembly hinged to the lower end of the base and adjustably attached to the other end of the platform to hold the platform in a horizontal position.

Abstract: An attachment for a rung-type ladder which provides a generally horizontally disposed supporting surface such as a step. The attachment includes a pair of downwardly opening generally inverted U-shaped members which are positioned over a pair of adjacent ladder rungs combined with a pair of angulated support members attached thereto and provided with a laterally extending upper end portion which combines with the top surface of the uppermost ladder rung engaging member to attach and support a horizontal generally planar supporting member which extends laterally to both sides of the ladder stiles thereby providing a step to receive the shoes of a person using the ladder to provide comfort and stability thereto or support a paint tray, container, tools and the like.

Abstract: In the art of scaffolding, temporarily utilizing elevated planks, stages or platforms for supporting workmen and materials through use of two or more leaning ladders, a compact ladder jack has a tubular, scaffold-supporting arm for storing a suspension chain when not in use. The arm hooks over a ladder rung and the chain is looped over a higher rung. The chain has a snap hook for receiving a preselected chain link to permit mounting of the jack in a position where the arm is disposed horizontally to accommodate variances in ladder inclinations. A latch on the arm guards against accidental displacement of the hook end of the arm from the lower rung.

Abstract: A dual purpose ladder attachment usable singularly as a human body support platform with hand rails or in a pair as a scaffold jack. Each ladder attachment comprises two pairs of pivotally joined support beams. Each pair of pivotally joined support beams have their non-joined ends connected to ladder rung engaging brackets. Each bracket is sized and shaped to fit over the side rail of the ladder while engaged with a ladder rung. When the device is being used as a body support platform, a cross-bar connected between the parallel support beams supports a rigid planar surface which is also attached to a ladder rung. This platform is useful for standing on the ladder while holding the side rails. In this configuration the device is mounted to extend vertically upward on the upper side of the ladder, allowing a user to stand comfortably on the ladder.

Abstract: A shelf, having a pair of brackets which extend downward and then forward from its back edge to engage the back edge and underside of either a step, or the top ledge, of a ladder. A stop member, which may be in the form of a pin loosely slidable in a hole through the shelf is spaced so that when the shelf is engaged on a step and pulled forward to bring the brackets snug against the back edge, the pin drops down to be engagable with the front edge and to prevent the shelf from being inadvertently pushed backward from the step. The pin may be pushed up with one finger under it, and the shelf pushed back to disengage the bracket for removal.

Abstract: The present invention relates to a foldable ladder attachment adapted to be secured to the rungs of a ladder to provide a platform for paint cans, brushes or like appurtenances or tools. The device is characterized by a novel linkage assembly enabling the apparatus to be readily accommodated to be affixed at an acute or an obtuse angle to a straight or extension ladder or inside or outside the sections of a folding ladder, without necessitating the employment of extensible stretcher mechanisms or like cumbersome devices as embodied in scaffold or platform supports heretofore known.