Abstract: A device for improving the winter road holding properties of automobiles is disclosed, which includes anti-skid members arranged in grooves in tire treads so as to surround lugs of the tread. A long working life of the anti-skid members may be attained if means are provided for moving the anti-skid members between non-retracted settings and retracted positions in which the anti-skid members are in the grooves.

Abstract: Antiskid apparatus comprising a first doglegged linkage of two rods which are pivotally connected together on one end and a second doglegged linkage of two rods which are pivotally connected together on one end, the linkages being pivotally connected in the middle of the respective rods to form a pantograph. A circular support member is pivotally mounted on the open end of each of the rods, and a thin-plate-shaped gripping member is fixed to each of the support members. Each of the gripping members comprises a ground contact portion that contacts the tire tread and covers at least a part of the width of the tread and a mounting portion that contacts the tire sidewall. In one embodiment, the linkage is held in a specified form by means of a holder, and the apparatus is mounted on the tire by securing hooks of tighteners in positions corresponding to the tire wheel holes, the hooks being provided at the top of the tighteners.

Abstract: An anti-skid device for a vehicle is automatically positioned by securing members 50 which cause the device to pass from an installation position to the operating position in which an anti-skid assembly 70, such as a snow chain arrangement, is arranged on the peripheral surface of the tire 10. The anti-skid device comprises a principal annular section 30 fixed to the anti-skid assembly 70 by arms 40 and arranged in a manner such that the securing member 50 can be fixed to this annular section 30 and can move freely over the circumference thereof.

Abstract: The device includes a flat rigid rectangular frame forming a pair of opposed parallel sleeves. Four traction elements, each having shank and U-shaped hook portions, are provided for telescoping movement of the shanks within the sleeves, to thereby position the hooks transversely across the tread of the tire. A cable and traveling block/threaded shaft arrangement is provided to simultaneously contract all four traction elements at substantially the same rate into gripping engagement with the tire treads. Crossbars, extending chordally on the inboard side of the tire connect the inner ends of the hooks and secure the device onto the tire. The shanks can rotate within the sleeves so that rotation of the tire can twist the hooks into a slanted condition whereby they more tightly grip the tire.

Abstract: An improved tire chain consisting of two side ropes, a plurality of crosswise bent bars set properly spaced apart between the two side ropes, a connector, a metal chain to be added supplementarily to prolong the side ropes to suit to a larger tire, and auxiliary crosswise bent bars possible to be added together with the metal chain to supplement the anti-slippery force of the prolonged section.

Abstract: A traction device for use in combination with vehicular tires includes a series of traction straps arranged at forty-five degree intervals about the tire and extending over the traction surface of the tire with forward and rear securement bands extending radially of the tire and coextensively of the traction bands to cooperate with respective forward and rear securement rings. A series of forward and rear side wall bands maintain the orientation of the traction and anchor bands. The forward anchor bands extending through the forward anchor ring are provided with apertures to receive a lock pin therethrough wherein the bands are each formed of resilient material to enable the arrangement to accommodate variation in tire sizes, as well as providing for enhanced traction in association with the tire.

Abstract: An anti-skid device for a vehicle wheel with a tire, particularly for tired vehicle wheels when used in ice and snow, arranged to be mounted on the vehicle wheel connected to an axle shaft, the anti-skid device including a setting member arranged to be positioned opposite to the vehicle wheel, the setting member including an annular setting portion concentric with the axle shaft, a supporting member removably mounted around the setting portion of the setting member, a fastening device for securing the supporting member to the setting portion of the setting member by fastening a pair of free ends of the supporting member to each other, such that the supporting member assumes a generally annular shape around the setting portion, the supporting member being fitted loosely around the setting portion unless the free ends of the supporting member are fastened to each other, and a plurality of elastically deformable anti-skid arms fixed to the supporting member, the arms extending radially outwardly over one of side

Abstract: An anti-skid device for a vehicle wheel is provided comprising an axial part having a plurality of arms extending therefrom which are attached to an anti-skid assembly, such as a snow chain arrangement. The axial part includes a securing device which rotates freely relative to the axial part for securing the anti-skid device to the vehicle wheel. Thus, the rotary motion of the anti-skid assembly around the wheel is not transferred to the securing device.

Abstract: In order to be able to use an anti-skid device, particularly for vehicle wheels with pneumatic tires when driven on ice and snow, having fixing disk, which can be attached to the wheel rim and which remains thereon even when the anti-skid device is not in use, and a supporting disk attachable to the fixing disk by a retaining ring and having a plurality of anti-skid arms engaging over the tire tread without great technical expenditure on a large number of vehicles, whose rims have different hole circles and pitches for the rim screws, the fixing disk with a shaped-on hub carries on its side remote from the supporting disk an adaptor disk, which is connected to the fixing disk by screw connections and which has a plurality of radially directed elongated holes in identical and/or several spacings or pitches.

Abstract: A studded tire apparatus for a wheel rotatably mounted on a vehicle, a tire being mounted on the wheel. The tire has a plurality of angularly spaced pairs of passages formed therein leading to the outer peripheral surface thereof, and a belt extends movably through each of the pairs of passages. A stud is fastened to each of the belts and is movable with the associated belt between projected and retracted positions. A gear train is mounted on the wheel and connected with the belts for moving the belts and the studs between the above positions, and an electric motor is connected to the gear train for operating the gear train.

Abstract: A traction-enhancing device that is releasably attached to vehicle tires. A rigid base member having a central core and plural arms radiating therefrom is placed into overlying relation to the side of a tire. Plural flexible cords and rigid rod members in axial alignment therewith interconnect a like number of tread-overlying road-gripping members to a capstan mounted centrally of the base member. Rotation of the capstan draws the road-contacting members radially inwardly into tight-fitting engagement with the tire and effectively creates an enhanced tread. Counter rotation of the capstan enables the road-contacting members to be swung away from the tread so that the device can be removed from the tire.

Abstract: The antiskid device includes a fixing disk, which can be mounted on the wheel rim of a motor vehicle and can remain thereon during the winter months, and a supporting disk mountable on the fixing disk and lockable therewith by means of a retaining ring on putting the antiskid device into operation. The supporting disk is provided with a plurality of radially arranged support arms, which engage over the tire tread and which carry a chain grid as the snow chain which, in the operating state, engages over the tire tread, so as to provide an antiskid device which can be effortlessly mounted on a wheel and provide a snow chain-like action.

Abstract: A traction device designed for attachment and support by a spoke of a vehicle wheel. The traction device includes a clamping arm that is forced by a threaded fastener to grip an individual spoke. Extending from the clamping arm is a traction arm having a traction finger that extends transversely to the treadwall portion of the tire.

Abstract: The anti-slip device comprises a plurality of linkages stretched over the tread of a vehicular tire. The ends of the linkage are formed into loops and extend over the tire sidewalls. In the proximity of the loops are a plurality of binder covered frames attached to the sidewalls in equal segments of space. Protruding from the binder is an extension adapted to be connected with and penetrate the end loops of the linkages to fasten the linkages on the tire tread.

Abstract: An antiskid traction device adapted to be attached to vehicle tires which comprises a right side frame member having a locking pin, a left side frame member having a pivotable locking member adapted to engage the locking pin, at least two antiskid members disposed at each of the end portions of the right and left side frames, the antiskid members being provided with a plurality of studs thereon for improving the traction thereof, and an adjusting member for changing the length of at least one of the antiskid members so that the device can be adjusted for all tire sizes.

Abstract: The present invention provides a spare tire apparatus for installation on a vehicle. The spare tire can be installed to a vehicle without the use of a conventional jack and can use the motion of the vehicle to secure itself to the vehicle. The inventive spare tire does not require removal of the flat tire which is attached with the vehicle.

Abstract: A lightweight device for obtaining improved performance of rubber tired vehicles. The arrangement has high-strength, thin-gauged traction intensifying means secured to the driving member for a tire, having a smooth or shallow tread, providing improved drawbar performance in fields when said traction intensifying means are engaged and improved traction and riding characteristics on hard grounds and pavements when said traction intensifying means are disengaged; and includes actuating means for rapid and convenient conversion between "steel-drive" for fields and "rubber-drive" for hard surfaces, and vice versa.

Abstract: An antiskid traction device adapted to be attached to vehicle tires which comprises a right side frame member having a locking pin, a left side frame member having a pivotable locking member adapted to engage the locking pin, antiskid members disposed at each of the end portions of the right and left side frames, the antiskid members being provided with a plurality of studs thereon for improving the traction thereof, and an adjusting member for changing the length of at least one of the antiskid members so that the device can be adjusted for all tire size.

Abstract: An anti-skid device is intended for use on pneumatic tires when the tires are used on ice and snow. The device includes a supporting disk with anti-skid arms pivotally displaceable about axes extending parallel to the axis of the wheel on which the pneumatic tire is mounted. The supporting disk is fixed to the wheel by a fixing disk and a retaining ring mounted on the wheel rim. The combination of the fixing disk and the retaining ring secure the supporting disk on a hub formed on the fixing disk. The supporting disk is arranged so that there is a certain amount of clearance relative to the hub for performing eccentric rotary movement for adapting the device to any elastic deformation of the pneumatic tire.

Abstract: A tire chain device of the type which has a rigid structure positioned on the inner side of the wheel upon which it is installed, said rigid structure being comprised of an adjustable length horizontal strap and two rigid depending straps pivoted from either end thereof in a manner that restricts pivoting more than 90.degree., the two ends of the horizontal strap of said inner structure being connected by two short cross links to an adjustable length outer strap, and the lower end of each depending strap being removably connected by two long cross links to a plurality of posts having expanded ends spaced along the exposed side of the outer strap. In another mode of the invention the inner structure is comprised of five rigid straps including four of equal length and shape pivotally depending from one horizontal strap such that they form five sides of an octagon when pivoted to their maximum outward extent.

Abstract: The invention relates to a device for fitting and fixing gripping shoes on vehicle wheels. Four gripping shoes are fitted at the one end of respective arms which, after being fitted on the wheel, form a cross. The other ends of the arms of the gripping shoes are toothed and the arms are slidingly suspended in their longitudinal directions relative to a housing centrally situated with respect to the wheel and are movable by means of a gear wheel, rotatably mounted in the housing. The gear wheel engages with the teeth on the arms and is rotatable by means of an operating mechanism. The centrally situated housing is shaped from one piece in which there are arranged four channels for slidingly suspending and guiding the arms of the gripping shoes. The channels are running from the lower part and in the same plane on each of the short sides of the centrally situated housing and are running out at the upper part and in the same plane on opposite short sides of the centrally situated housing.

Abstract: A tire chain device of the type which has a rigid structure positioned on the inner side of the wheel upon which it is installed, said rigid structure being comprised of an adjustable length horizontal strap and two rigid depending straps pivoted from either end thereof in a manner that restricts pivoting more than 90.degree., the two ends of the horizontal strap of said inner structure being connected by two short cross links to an adjustable length outer strap, and the lower end of each depending strap being removably connected by two long cross links to a plurality of posts having expanded ends spaced along the exposed side of the outer strap. The outer strap is slotted near one end for vertical support of the inner structure in the formation of a warning triangle.

Abstract: Anti-skidding device for vehicle wheels with tires, particularly pneumatic tires, for ice and snow surfaces. The anti-skidding device 100 consists of a support disk 120 which can be attached at the wheel disk or rim 11. The support disk is provided, adjacent to its periphery, with a plurality of anti-skidding arms 140 which extend radially in a fixed manner, equally spaced apart or are pivotal about axes 141 which extend parallel to the wheel disk bearing axis 117. The anti-skidding arms are prebent sections of plastic which engage over the tire travel surface 14 and carry spikes at their free ends.

Abstract: A lightweight device for obtaining improved traction efficiency of rubber tired vehicles without adding ballast weight. The device has resilient traction intensifying means secured to a driving tire, including auxiliary means for utilizing stronger sub-surface soil, providing higher drawbar pull at a higher rate of travel speed; and means for convenient attachment and removal.

Abstract: The present invention relates to a skid protections device (3) for wheels preferably snow chains for vehicle wheels. In order to permit quick and simple assembly of snow chains on vehicle wheels the device according to the invention comprises a power aggregate attached to a wheel, coupled to a bracket thereon. The bracket with skid protection means may be mounted at the wheel with the skid protection means extending in working position around the wheel except a part thereof which is prevented from attaching a working position by the wheel engaging a ground. The power aggregate, in coupled condition, moves the blocked part of the skid protection means to the working position when it is released by rotation of the wheel, the skid protection means in working position is movable in peripheral direction relative to the wheel during rotation.

Abstract: A tire traction device including a cylindrical cup member for attachment on a rim-securing nut of a vehicle wheel by a set screw, an elongated threaded shank extending coaxially with the cup member, an elongated link having an elongated slot for receiving the elongated shank, nuts threadably mounted on the elongated shank on opposite sides of the elongated link for tightening the elongated link in an axial position on the shank wherein the elongated link both extends perpendicularly to the shank and rests against the side of a tire, and a traction member extending perpendicularly from the end of the elongated link and having a first side for gripping engagement with the tread of the tire and an opposite side for gripping engagement with the ground.

Abstract: An automatic tire chain for driver operated vehicles includes a chain device that is moved to the road contact surface of a tire from a position adjacent thereto by means of a spring mechanism placed under tension when the chain is held away from the road contact surface of the tire. A pair of rings, one being fixed to the wheel and the other being slideably mounted thereon are provided with indexing slots. The slideable ring has a chain affixed thereon and is moved relative to the fixed ring by an operator activated engaging mechanism mounted on the vehicle. The engaging means engages the indexing slots and moves the slideable ring relative to the fixed ring while the vehicle moves along the road at a speed less than 10 miles per hour placing the chain adjacent to the road contact surface of the tire.

Abstract: The invention relates to an anti-skid device for vehicle wheels for travelling on ice and snow with a disc-like casing connected to the wheel rim with resilient-elastic anti-skid arms, constructed in such a way that in the position of use their ends can be swung out radially into the tire tread area while adapting to the rolling shapes of the tire and can be swung in when not in use, so that a device is obtained which can effortlessly be fitted whenever required, which is inexpensive to manufacture and which permits higher speeds than are possible when travelling with snow chains or spiked tires.

Abstract: There is disclosed in the present application a traction device adapted to being mounted on a driving wheel tire of a vehicle for obtaining greater traction on ice or snow although the device may also be useful in certain types of mud. The device comprises four spring arms each including a textured traction portion positioned across the face of the tire tread. The device is quickly mounted over the tire by collapsing and spreading apart the tread portions to permit bringing the device into engagement with the tire from a radial direction. The four arms in two pairs are then disposed at right angles to each other and are thereafter simultaneously tightened into embracing generally equally spaced relationship with the tire by turning a spring loaded crank.

Abstract: The present invention is primarily for providing traction for the tires of automotive vehicles in particular on snow and ice surfaces. The tire generally comprises pairs of deep and shallow channels in close proximity with each other around said tire to extend transversely from the side walls thereof toward a tread portion, said pairs being uniformly spaced at intervals around the periphery of said tire. The tire of the invention includes traction units which are always recessed in the deep channels to provide no traction, and when the traction units are disposed in the shallow channels, they provide effective traction. In addition, the invention comprises a device for converting from one type of tire to another and also a mechanism having a pneumatic bumper for protecting a supporting unit and a shifting unit from breakage when a tire is punctured.

Abstract: An auxiliary gripping member for gripping shoes for vehicle wheels is disclosed. The auxiliary gripping members can be affixed to a gripping shoe which is attached to a gripping wheel without disassembly therefrom. In a preferred embodiment, the auxiliary gripping members are attachable without the need for tools and without creating undue stress on the mounting mechanism.

Abstract: An improved gripping member for gripping shoes used on vehicle wheels is disclosed. The cross sectional shape of the gripping member is formed as a U throughout its length whereby substantially improved traction and a substantially stronger gripping member are obtained. In a preferred embodiment, the side legs of the U-shaped gripping member are made wavy in the area which contacts the ground.

Abstract: A traction device having a base that attaches to the wheel of a vehicle and a shaft projecting from the base has a moveable member on the shaft that forces a traction member to cover a portion of the tire tread when extra traction is desired, as in ice and snow. The traction member may be attached either to the base, in which case the moveable member pushes against it to radially spread it, or to the moveable member itself, in which case the device is moved toward the tire and spread at the time it is engaged.

Abstract: Emergency traction apparatus for temporary attachment to a vehicle wheel comprises a multiplicity of diametrical arms forming a unitary arm assembly with a common central pivot. The arms are interconnected by flexible couplings so that the assembly may be spread from a collapsed condition to form a stable radiating arm array by turning two of the arms about the pivot and then interconnecting them. Opposite ends of the arms have radially movable J-rods that overlie the tire tread when the arm assembly is applied to the side of a vehicle wheel. The J-rods are simultaneously engaged with the tire by a central tightening mechanism that moves the rods radially inward against the bias of springs that normally urge the rods radially outward to provide clearance for the easy application of the apparatus to the vehicle wheel.

Abstract: An assembly securely mounted to a wheel of an automotive vehicle to provide continual availability of cleats to be fitted around the treads of a tire for use in driving an automotive vehicle through mud or snow. The assembly consists of a cylindrical plate with a series of round through holes for affixing to a range of automotive wheel configurations with elongated lug nuts and bolts, a series of L-shaped brackets securely affixed around the outside perimeter of the mounting plate, a spring-loaded telescoping shaft extending from each L-shaped bracket parallel to the outside of a vehicle tire, a cleat affixed on the outside end of each telescoping shaft, so that each cleat can be locked in position around the tire treads with the telescoping shaft in the telescoping position and with each cleat further being placed in a locked position near the side of the tire when the telescoping shaft is in a retracted position so as to be out of the way when not in use.

Abstract: An endless tire-mounted anti-skid belt is produced by spreading an endless fibrous mesh to the diameter of the vehicle tire on which the belt is to be mounted, impregnating the spread endless mesh with a hot-vulcanizable elastomer dissolved in a solvent, drying the impregnated spread endless mesh until at least 80% of the solvent has been removed, repeating the impregnation and drying steps several times until a desired thickness of elastomer has been deposited on the spread endless mesh, and curing the elastomer by vulcanization in an autoclave under hot steam.

Abstract: Applicator for applying transverse traction sections to an automobile tire having a toothed cog mounted on the outer surface of the hub at each of the openings between the hub and rim, which are connected in driving engagement with a manually operated worm-gear drive unit, the lead of the worm being such as to lock the cog against rotation of its own accord. A perforated steel ribbon slidably extends out of one end of a sheath secured diametrically across the wheel hub, and passes over and in meshing engagement with the cog and extends through a channel secured to the rim at the opening. The steel ribbon is so arranged so that when the cog is operated to extend the steel ribbon out of the sheath, the lead end of the ribbon will curl around the tire from the inside to the outside so as to enable one end of a traction section to be secured thereto and then drawn over the tire by retracting the ribbon into the sheath.