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: 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: 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: A compact index card register of relatively small dimensions, consisting of a housing with a keyboard of several selector keys arranged in an array of rows and columns, and within the housing a drawer adapted to be moved outwardly from the housing and to accommodate a stack of index cards. Parts associated with each selector key and the housing serve to retain a predetermined number of index cards within the housing and to release the drawer for outward movement whereby all but the predetermined number of index cards are moved outwardly together with the drawer, in exposing to sight an index card corresponding to the actuated selector key. Every index card includes a selector tongue with a predetermined number of selector apertures.

Abstract: A compact index card register of relatively small dimensions, consisting of a housing with a keyboard of several selector keys arranged in an array of rows and columns, and within the housing a drawer adapted to be moved outwardly from the housing and to accommodate a stack of index cards. Parts associated with each selector key and the housing serve to retain a predetermined number of index cards within the housing and to release the drawer for outward movement whereby all but the predetermined number of index cards are moved outwardly together with the drawer, in exposing to sight an index card corresponding to the actuated selector key. Every index card includes a selector tongue with a predetermined number of selector apertures.