Abstract: The invention relates to driving means for displacing two elongate members, the driving means comprising: a first set of at least a row of primary rollers and a row of secondary rollers; a second set of at least a row of primary rollers and a row of secondary rollers; wherein the first set is connected to a first member and the second set is connected to a second member; and wherein a belt serpentines between the primary rollers of the first set and the primary rollers of the second set along the length of the members and serpentines back between the secondary rollers of the first set and the secondary rollers of the second set.

Abstract: The device for crushing metal cans has a supporting structure and a crushing head mounted on the supporting structure and forming a region for resting the can to be crushed. The crushing head supports two presser elements arranged mutually opposite along a main axis proximate to the resting region. The device also has a mechanism for moving one of the presser elements towards the other presser element and rotating it about the main axis with respect to the other presser element, whereby to crush a can interposed between the two presser elements.

Abstract: A hydraulic or pneumatic power unit (1) includes at least one elastomer space (4) for a compressive-force producing/transmitting elastomer (5), the space (4) being formed so as to provide the space (4) with at least one constriction point between pressurizing side and compressing side, and that the elastomer space (4) is filled with elastomer (5) by casting elastomer in situ. Elastomer space (4) is preferably in direct communication with a pressurizing space (2) for a hydraulic fluid (7), the pressurizing space (2) being connected to a pressurizing unit (20).

Abstract: The invention relates to a device for working plate-shaped material, the device being provided with a frame and a pair of cooperating elongated working members. One of these working members has a stationary arrangement in the frame, while the other is movable in the frame, transversely to its longitudinal direction, towards and away from the stationary working member. Both the frame and the movable member are each provided with a plurality of rollers which, when seen in the longitudinal direction of the working members, are arranged one behind the other. An endless belt is passed over the series of rollers. The belt is fixed at one end and is at it other end connected with a driving means, by which the belt can be moved in its longitudinal direction to draw the movable member and frame closer together, or to permit them to move apart under the influence of an external opposing force.

Abstract: An improved method and apparatus is shown for simultaneously retreading all of the tires in a stack of rubber tires that have been placed in an autoclave or the like. Each of the tires is covered respectively with a precured tread and enclosing envelope having a U-shaped cross section that surrounds the periphery of the tire to be retreaded, the inner edges of the respective envelopes being pressed to seal against the rims or shoulders of the tires. Proper sealing of the edges of the U-shaped envelopes against the sides of the tires is effected by compressing the stack against a back-up means adjustably supported on and locked in position on a post that extends centrally through the stack. The improved means for producing compression in the tire stack includes an inflatable tire means that surrounds the post to press the stack against the back-up means.