Abstract: A device for supporting simultaneously the bottom ends of both stiles of a ladder from sloping ground, so that the rungs of the ladder are horizontal, comprises a reversible triangular platform, which is supported from the ground by three feet, one of which spaces the respective corner of the platform at a greater height above the ground than the other two feet.

Abstract: The invention disclosed herein comprises a ladder roof brace which includes adjustable means of engaging the rungs of a ladder, means of bearing against both sides of a roof over a ridge and means of engaging a gutter.

Abstract: A clamping device is provided for the adjustable attachment of stabilizer legs to a ladder in a manner to prevent lateral movement of the ladder. The clamping device has paired elongated jaws interconnected by a hinge and spring and adapted to slideably engage the legs of the ladder. A spreader rod is pivotably associated with the hinge and has a free end adapted to move in a vertical path. A stabilizer leg is attached to the free end of the spreader rod. When the spreader rod is swung downwardly, it forces the jaws into gripping contact with the leg of the ladder. When the spreader rod is swung upwardly, the jaws open sufficiently to permit sliding movement along the leg of the ladder.

Abstract: The invention is a climbing device comprising a ladder with a pair of spaced apart upright members for leaning against a structure and a plurality of spaced apart rungs each extending between and supported by the upright members, a stabile support member having a base portion for securement to the structure and a retainer portion engaged with one of the rungs and selectively disengageable therefrom, and fastening means for fixing the base portion to the structure. The securely fastened stabile support prevents slippage of the ladder and together therewith provides a safe apparatus for climbing structures.

Abstract: A ladder attachment is provided for holding a ladder on a sloping roof. Sharp, pointed members or claws are attached to the ladder which, in operation, protrude from the ladder in a direction facing the roof. The sharp, pointed members pierce into the roof a selected distance at a selected angle and hold the ladder on the roof without sliding. Multiple non-skid surfaces are also provided on the rungs of the ladder for supporting the user.

Abstract: A ladder rest comprises interconnected yokes (12,13) which extend across the front or climbing side of an upper ladder section (8) and are mounted on rungs (18) of that ladder section by hooks (17). The yokes extend around the stiles (11) of the ladder and carry abutments (22) which engage a wall (24). The yokes are clear of the stiles of the ladder and of any guide furniture (10) on the lower ladder section, so as not to interfere with complete retraction of the ladder. The abutment portion (22) is below the level of the lower hook (17) at which load is applied from the ladder to the device to provide an advantageous geometry when the ladder is loaded and bows towards the wall.

Abstract: A rain gutter ladder support device (A) is illustrated which may be placed inside of a gutter (12). The device is designed to fit snuggly inside the gutter with a front bar (10) engaged against the front edge (12a) of the gutter (12). The device reinforces the front edge (12a) of the gutter when a ladder (L) is placed against the front edge (12a) to fully support the ladder and weight of the person without damaging the gutter. The device may be made of various metals and can be made in various sizes to fit different size gutters.

Abstract: A multi-purpose convertible ladder stabilizer, particularly adapted to stabilize the upper free end of ladders such as the extension type during utility in the construction, maintenance, repair, painting of commercial and domestic buildings. The stabilizer is characterized by its portability and function convertibility wherein it may be removably set for disposition as an outside corner clutch, an inside corner engager, a building overhang ladder attachment, window spanner and the like. A coactive relationship is provided between elements wherein interconnected articulable extensions and a ladder during use, irrespective of the geometric vertical configuration of that elevated part of a building which may be considered the workplace.

Abstract: Modifications in a levelling device for ladders and the like are provided. Apertured lug, adapted for attachment to the bottom ends of uprights, stiles or legs of a ladder, trestle, etc., are slidably mounted on an arcuate support bar, and biased to a non-locking or freely slidable position. On application of weight to the ladder, the apertured lugs pivot to a locking position. In one embodiment, each of the apertured lugs is formed with extension members or fingers with abutment surfaces extending parallel to the plane of the ladder which tangentially engage the sides of the support bar when the apertured lugs are in locked position to prevent or limit any tiltable movement of the support bar out of the plane of the ladder. In another aspect of the invention, the lugs are provided with non-circular apertures and the support bar is formed with a complementary non-circular cross-sectional configuration, such as triangular, square, etc.

Abstract: A gutter protection device for preventing damage to an eaves-mounted gutter against which a ladder is leaned. A polyethylene foam block forms the body of the device. A semi-circular recess in one face of the body can be fitted on the lip of the gutter. A pair of pins which project from the body into the recess are then hooked behind the gutter lip to mount the device on the gutter. A bearing surface of the body has a pair of slots which receive the legs of the ladder. One slot closely receives the leg of the ladder to assist in preventing sideward sliding of the ladder. The other slot is oversized so that it can receive the legs of ladders having various sizes.

Abstract: A stabilizing attachment for a ladder intended to make the ladder safer to use. The attachment includes a fixture capable of being secured at a selected position along the length of the ladder and support means comprising a cross member extending parallel to the rungs of the ladder and a pair of parallel struts coupling the cross member to the fixture. The support means can be arranged in either of two positions; in one position, the struts extend at right angles to the uprights of the ladder while in the other the struts extend parallel to the uprights. In either case, the cross member makes line contact with the structure against which the ladder is placed and the cross member may be provided with a friction-engendering surface to inhibit slipping of the cross member on the structure.

Abstract: A ladder fastening device for pole climbing. The device includes a central strap portion operable to be wrapped around a pole and having free end portions. A pair of end straps are included each connected to a different end of the central strap portion and operable to be wrapped about the legs of a ladder previously leaned against the pole. Each of the end straps has a pair of rigid buckles connected to an end for engaging the free end of the central strap portion. There is included at the other end of each end strap a latching means for looping each end strap around one of the legs.

Abstract: An adjustable stablizing device which is attached to an extension ladder having hollow rungs without requiring modification of the ladder structure or affecting normal operation of the ladder is described. The device has two stabilizing elements made of aluminum which are located at different side of the ladder. Each stabilizing element has an upper and a lower bracket which are connected together by two rigid pivotably-linked longitudinal members. The stabilizing elements are connected to each other by rods which extend through the hollow rungs of the ladder and which connect the upper and the lower brackets. The lower bracket and the lower longitudinal member are pivotably connected, and the upper bracket has a number of apertures spaced lengthwise of the ladder. By choosing the aperture to which the upper longitudinal member is connected, the attitude of each of the lower members is varied via the pivotable connection so as to lie on the surface adjacent the ladder side.

Abstract: A wall stand-off apparatus and method for supporting virtually any ladder adjacent to a substantially vertical surface. The novel wall stand-off apparatus of the present invention comprises a U-shaped support bar which forms two, substantially parallel legs. Each leg is provided with an extension member, such that the legs are individually adjustable in length.Two clamps are pivotally connected to the support bar. Each clamp comprises two movable, opposing jaws which are adapted to be attached to a portion of the ladder which is inserted therebetween. Each clamp includes a thumbscrew such that when a ladder's side rail or rung is inserted into the clamp, the thumbscrew may be tightened so as to firmly secure the clamp to the ladder. With both clamps properly secured to either the side rails or a rung of a ladder, the ladder may thereafter be leaned against a substantially vertical wall, with the legs of the support bar resting against the wall.

Abstract: A ladder safety device is provided which may be fitted to a ladder and includes at least two elongated members cooperating telescopically. Apertures are formed in the elongated members which may be brought into register on telescopic extensions of the members to receive the ends of ladder uprights so that the device may be located transversely across the top of a ladder. The apertures may be of different sizes and may be brought into register at different relative locations of the elongated members to receive ladder uprights at different separations. In a preferred embodiment, the device comprises a central and two additional elongated members. The central member is formed with two spaced apertures and each additional member is formed with one aperture towards one end thereof.

Abstract: A ladder including upstanding opposite side rails and vertically spaced rungs extending and mounted between the side rails is provided. A pair of screw shafts extend along and are journalled from the side rails and elongated guides are mounted from and extend along the upper end portions of the side rails. A pair of followers are guidingly engaged with the guides for movement therealong and the screw shafts are threadedly engaged with the followers. The lower ends of the shafts include structure for inputing rotary torque thereto and the followers include laterally outwardly projecting arm portions disposed generally normal to a plane containing side rails of the ladder.

Abstract: A ladder which can be used as either an extension ladder or step ladder or stool, and which includes a pair of slidingly telescoping, selectively extendable ladder sections. An interconnecting pedestal subassembly is provided and is adapted for detachable engagement with the side rails of the ladder sections. The interconnecting pedestal subassembly can be interchangeably used to form a ground engaging braking skid or a window hook when secured to one or the other of the ladder sections.

Abstract: This application provides an attachable non-slip ladder support for and on an upper rung of a ladder with a typical stile and rung construction. This support has a shell-like member having an internal configuration which is sized and adapted for slidable mounting on this upper rung. Intermediate this shell-like member and fixedly secured to its outer surface is a resilient non-skid member which is typically of sponge-like material. This member is secured by adhesive, rivets or the like. Clamp members are used at each end of this resilient support to removably secure the support assembly to the rung in the selected desired attitude. These clamp members insure that the support is not moved during use so that the resilient portion protrudes ahead of the stiles.

Abstract: The safety attachment includes a flat strap base member and a clamp thereon to detachably mount it on the top rung of a ladder. A pair of curved horns are pivoted on the ends of the base member, the horns being curved to fit around the tree against which the ladder is put, and with teeth on their concave sides to bite into the tree. The horns have diverging extensions at their outer or swinging ends which act as camming elements in applying the attachment to the tree. A chain interconnects the horns, which rests against the tree, and a tension spring also interconnects the horns. The horns have inner extensions extending oppositely beyond the pivot axes, and a pull rope interconnects these extensions and reaches the ground, which the user can pull for swinging the horns away from each other and releasing them from the tree.

Abstract: A ladder attachment consisting of two triangular plates with holes and connecting rods. When connected through the rungs of a conventional extension ladder it forms a frame on the outsides of the ladder that can be adjustably extended over the ridge of a roof.The attachment allows the ladder to conform to the roof's pitch and be secured to the roof's ridge.

Abstract: A fitting for a ladder including a pair of brackets releasably attached to the ladder legs and including a pair of downwardly directed hook portions and associated parts that are sized to be seated in a gutter. The brackets are connected by a crossbar and in a second mode of operation a non-skid, resilient faced member is attached to the crossbar. Thus the resilient faced member can be used against aluminum siding and the like to distribute the weight and thus avoid damage to the exterior wall of the building.

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 ladder standoff device adapted to be readily attached to and detached from a ladder comprises an elongated axle member having a pair of wheels rotatably mounted at opposing ends thereof, an elongated standoff bar attached to the axle member and extending transverse thereto, and a handle member pivotally attached to the end of the standoff bar remote from the axle member. The standoff device is attached to a rung of the ladder by a pivot structure that is mounted on the standoff bar and consists of a fixed hook member and a cooperating sleeve that is slideable along the standoff bar; and the standoff device may be locked in position by a further attachment member that is slideable along the handle member and adapted to engage a rung of the ladder different from the rung upon which the device pivots.

Abstract: A safety device for ladders to prevent slippage when placed against a tree or pole is disclosed. Means for gripping the tree is connected to a holding member A and lies generally perpendicular to the rungs L of the ladder. The holding member A is rotatably fastened to the top rung of the ladder for rotational movement about a longitudinal axis of the rung. In a preferred embodiment, the gripping means comprises a plurality of sharp teeth B disposed along the side edges of the holding member A. The holding member A is arcuately shaped for conforming engagement with the tree when the tree has such a small diameter that the teeth B do not engage the tree. In another embodiment, the holding member A is rotatably fastened to an elongate member C. The elongate member C is then fastened to the side rails I of the ladder generally parallel to the rungs L.

Abstract: A ladder is provided with a pair of brackets which permit the ladder to be used against a house without damaging the gutters. The attachments comprise a pair of bracket members each of which is of square tubular construction and bent at approximately 20.degree. midway between the ends thereof thus defining a horizontal leg and a depending leg. The horizontal leg of each bracket is attached to the top rung of a ladder. The opposite depending leg of each bracket has an extensible member threadedly engaged therein for inward or outward adjustment with respect thereto. A foot is carried on each extensible member which engages the inside rear wall of the gutter. The depending legs with the extensible members are positioned within the gutter with the feet thereof abutting against the inside rear wall thereof.

Abstract: A ladder securing device which comprises two connectors for attachment to the runners of a ladder. One of the connectors includes a first rotatable element on which is mounted a second rotatable element. The elements are rotatable about axes which are at right angles to one another. A curved metal band is attached to one of said elements and the other connector includes an arrangement such as a locking pin for releasably securing the metal band to it. The arrangement of the first connector is such that the band can pivot about the two axes.

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 which is attached to the top portion of ladder rails, the support having a large bearing surface which is covered with soft fabric and being adapted to fit ladders of various sizes and made of various materials.

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: A multi-purpose attachment for ladders enhances the safety and convenience of a ladder. A basic attachment unit is adjustable along ladder side rails and can be locked in any selected position. The basic unit contains fittings which allow the ready attachment and locking of gutter, roof and ladder side rail attachment components all held securely by set screws.

Abstract: A ladder attachment including an adjustable frame assembly detachably connected to the end of a section of a conventional extension ladder, the frame assembly cooperating with the side rails of the ladder to form a hook portion for extending over the ridge of a pitched roof to thereby allow the ladder to be supported in an inclined position on the roof.

Abstract: A step-ladder is provided with one or more hooks on one or both of the ladder's stanchions, with the hooks adapted to engage with corresponding horizontal, standing, or inclined members carried by a fixed structure. The hooks, which may also be telescopic, are vertically and perpendicularly displaceable with respect to the normal position of the step-ladder and each hook is independent from the other in order to permit their regulation or adjustment in height and direction of orientation.

Abstract: A ladder support having a pyramidal configuration with a ladder rest at the apex of the pyramid which provides a stable rest for supporting a ladder proximal to eaves of a building structure.

Abstract: A ladder levelling device used in combination with a ladder on inclined ground surfaces, which levelling device is placed under one leg of the ladder while the other leg rests on the ground surface or some other support, comprises a triangular, inclined platform including an open cavity area defined in its bottom side. The levelling device provides a stable, as well as a level ladder.

Abstract: A pair of ladder brackets held together by an elastic tie at one end of each having U-shaped clamps at the other ends for engaging the narrow sides of the side rails of a ladder when the brackets are fitted to the outer wide sides of the side rails. The elastic tie holds the U-shaped clamps against the inner wide sides of the rails. The brackets can be slid along the rails without interference from the rungs. The free ends of the brackets engage the roof of a building against which the ladder leans, to prevent the ladder from being displaced sideways. The brackets can be carried in a small package up a ladder by a user, and installed while the user is standing on the ladder.

Abstract: A scaffold structure comprising a tubular column positioned vertically in use by a base support for supporting a base end portion of the column. Top supporting structure supports a top end portion of the tubular column and is effective to maintain the column vertical in use. The base support and top support impart torsional rigidity to the tubular column. A positionable platform assembly having a platform for standing thereon is positionably mounted on the column for positioning the platform at a selected height above the base end of the column, and to permit adjustment of the height of the platform above the base end of the tubular column.

Abstract: A safety bracket for securing a ladder in place against a building structure, the bracket having two extending arm members interconnected in crossing relation intermediate the respective ends thereof with each arm member being slidable with respect to the other. Each arm member includes an intermediate portion and two end portions pivotally joined to the intermediate portion, the two end portions of each arm member including, respectively, a hook shaped portion which may be hooked around an upright member of a ladder and an eyelet for receiving therethrough a projecting member secured to the building structure.

Abstract: A stablizing device to be connected on the outer sides of the side pieces of a ladder has a lower leg pivoted on a lower part of the side piece and pivoted at its upper end to an upper leg part which has a locking member for releasable locking on the side piece. By adjustment of the upper leg part, the leg parts can be braced against the ground or against a vertical wall surface. This device leaves the rungs of the ladder unobstructed and the upper leg part may be freely slidingly connected on the side piece so that the knees can readily be adjusted independently to allow the ladder to be stabilized on uneven ground. There is disclosed an arrangement in which a lever on the upper leg part engages a toothed rack on the side piece and lifts the ladder bodily upwards a small distance as the lever is pressed inward to the side of the ladder.

Abstract: A bracket including a clamp for removable clamped engagement with a ladder is provided for support from an upstanding inclined ladder and includes a rigid support arm projecting horizontally outwardly from the clamp and the side of the ladder facing in the direction toward which theladder is inclined. The outer end of the arm includes a mount supported therefrom for angular displacement about an axis extending transversely of the support arm and an elongated clamp arm is supported from the mount for oscillation therewith relative to the arm. The clamp arm is disposed at generally right angles relative to the axis of oscillation of the mount and is swingable with the mount in a plane generally paralleling the support arm. The clamp arm includes one end portion which may be lengthwise advanced and retracted relative to the mount.

Abstract: A support strut arrangement for use with a ladder extends from the ladder in load transfer relation with the ground, having lost motion provision to accept a predetermined extent of bowing of the ladder under the weight of a user before the load strut becomes effective, so that the top ends of the ladder may be in substantially unrestricted pressing relation against the supporting wall or other object, thereby permitting the development of substantially maximum friction forces tending in normal use to maintain the tip of the ladder in its propped position. In the event that the foot of the ladder slips out the lost motion, in the form of an extensible tension member or of a strut which can shorten its effective length, is taken up and substantially rigid triangulation of forces is established.

Abstract: A plurality of substantially parallel, laterally spaced, male parts formed of a plastic having low dimensional stability are removably insertable into a base member of similar plastic having a similarly arranged plurality of sockets. If the spacings of the male and female members do not exactly coincide, both the male members and the walls of the sockets may be distorted a substantial amount, thereby premitting insertion of the male members into the sockets in spite of the misalignment of the members.

Abstract: A step stool includes a handrail attached to one side with non-skid steps that make it safe when standing on the step stool. Stabilizing bars are connected to the step stool to prevent it from tipping over due to a user placing his weight on the hand rail when standing on the step stool.

Abstract: Stepladders having good lateral stability comprise a pair of channel members of fixed length pivoted at their top end to the side rails of the front ladder section to swing between a closed position and an extended position. The bottom ends of each channel member carries a foot member which always extends below the bottom end of the front section side rails so that the front section is supported in use of the ladder exclusively upon said foot members and not upon the bottom ends of the side rails.

Abstract: A safety device for supporting legs or feet of a ladder or similar structure which is a one-piece combination of an inclined plane and a series of steps providing a multiplicity of levels on which said structure may be supported.

Abstract: Increased stability is imparted to a ladder according to the present invention by providing a load suspension means connected at the upper and lower ends of the ladder for suspending a load in an elevated position disposed inwardly towards the lower end of the ladder from a vertical plane extending from the point of connection of the suspension at the upper end of the ladder.

Abstract: An extension ladder in which the extension part has a plurality of striated cut-out portions along the leaning edge to serve as hooks for hooking onto a gutter or top edge of a sidewall or roof of a building to prevent lateral or vertical sliding. A lining of rubber or similar material is preferably provided in the cut-out portion to provide an anti-skid surface to further prevent lateral sliding.