A roller-type apparatus for indicating a charge or load on a fixed axle comprises a roller rotatably mounted to the fixed axle, the charge or load being arranged to act on the peripheral surface of the roller. The axle is fixed at two spaced apart positions and the roller is rotatably supported on the axle at two spaced positions disposed adjacent the fixing positions of the axle and equally spaced relative to the center of the axle. At least one transmitter is coupled to the axle in the area be...

A roller to be used in apparatus for wet treatment of photographic material comprises a hollow metallic core and two inserts with coupling shafts provided therein. A coat of chemically resistant thermoplastic material is applied around and sealingly surrounds the core to protect it from the corrosive action of media used in the wet treatment process. The outer surface of the thus coated roller is thereupon machined to a high-quality finish.

A roller for compressing of webs of material comprises a rotating hollow roller traversed lengthwise by a stationary crosshead. Hydraulic loading devices in the form of sealing members act on the inside circumference of the hollow roller and delimit hydrostatic bearing pockets to which hydraulic pressure fluid can be supplied. The extension of the sealing members is limited by head bolts, which make it possible to position the hollow roller relative to the crosshead during operation.

A crusher roller having a pair of roll hubs mounted on a shaft. Each hub has an external taper on its radially outer surface and an annular recess in each end adjacent to the inner surface. A shrink disc with an internal taper on the inner surface is positioned within each annular recess adjacent to the inner surface of the roll hubs. A circular wedge having an external taper on its outer surface is positioned between each shrink disc and the inner surface of each annular recess and bolts connec...

Inside a tubelike mantle a shaft is attached at the middle of the mantle and the shaft has roller bearings at both ends for rotating the mantle on a support or stand. The mantle is furthermore supported at one or several points between the point at which the shaft is attached to the mantle and the end of the mantle by supporting means mounted either inside the mantle on the shaft or outside the mantle on the support, stand, base or the like.

A roller for a roller conveyor which has an integral base body (3) made of thermoplastic which is symmetric to an axis of rotation (9) and which contains a through passage (11) coaxial to the axis of rotation and is defined by two face sides (7, 8). The roller has a flanged pulley (4) integral to the base body (3) which is coaxial to the axis of rotation, a covering (34) arranged on the supporting section (5) which forms a running surface for work pieces or work piece supports, a tooth arrangeme...

A roller mount for a roller of a conveyer has an axle, multiple holding panels, and a fastener. The holding panels are mounted around a connecting end of the axle, and each has a positioning hole and a securing hole. The positioning hole has a diameter larger than that of the connecting end of the axle. At least one pair of male-female combination is defined between each pair of adjacent holding panels. A distance between an uppermost one pair of the at least one male-female combination and the ...

A composition for roller for an electronic copying machine or printer which comprises a vinyl polymer (A) having at least one alkenyl group per molecule, and a roller as fabricated using said composition for roller. The present invention provides a composition for roller for an electronic copying machine or printer with which an alcohol-soluble nylon layer can be directly constructed on the roller without a primer or other pretreatment.

A roller cage made of metal for holding rollers of a roller bearing, includes: separation bars separately defining a plurality of window holes along a peripheral direction of the bearing with a constant interval thereamong. The window holes respectively receive said rollers therein. Each of the separation bars includes: a contact surface being formed by press-molding one of an outer diameter surface side end portion and an inner diameter surface side end portion thereof, and contacting with the ...

An idler roller for use in roller conveyors comprises a shaft which is nonrotatably installed in the frame of the conveyor, a hollow cylindrical shell coaxial with the shaft, and two annular mounting units each installed in one end of the shell and each provided with an antifriction bearing to facilitate rotation of the shell about the axis of the shaft. Each mounting unit further comprises a labyrinth seal which prevents entry of foreign matter into the respective bearing. The mounting units ar...