Abstract: The bearing device consists of a hydraulic cylinder and piston unit mounted between two pivotally interconnected solids and a hydraulic circuit. The acceleration performances in the two directions imparted to the suspended mass supporting the grinding wheel are obtained by using a combination of suitable valve means controlling the hydraulic circuit and more particularly through the system for regulating the fluid pressure in one of the chambers of the cylinder which operates as a differential. The result thus obtained is a homogeneous removal of chips and an optimal exploitation of energying flaw-removing machines.

Abstract: This device intended for crack removing machines comprising a frame structure, a post and a first fluid-actuated cylinder connected to a two-armed lever pivotally connected to an arm supporting the grinding wheel comprises a third cylinder connected in parallel to the first cylinder and having one point of its cylinder and another point at the end of its piston rod pivotally connected the former about a vertical axis fixed in relation to the frame structure of the machine and the latter about another axis fixed in relation to the post and not coincident with the pivot axis of this post.

Abstract: A press for the vulcanization of tires comprising a horizontal cross-member which is mounted in a cantilever fashion at one of its ends on a support having a vertical axis, and which is able to both pivot about and to slide along the vertical axis of said support. In order to control both the pivoting and sliding movements of the horizontal cross-member, there is provided a single control means associated with guide means comprising a cam follower member and a groove forming a cam having two end portions which extend vertically and which are one another offset vertically and angularly in relation to axis of support, and an intermediate portion progressively connecting the two end portions of the groove.

Abstract: Device for centering and positioning the upper bead of a horizontally disposed crude tire around a bead ring provided centrally of the upper, vertically movable portion of the mold in a vulcanizing press of the type comprising a set of radial segments disposed in a central cavity in the upper mold portion, said segments having their operative ends shaped to constitute together a tapered centering member; a vulcanizing bladder is firstly inflated moderately in order to push said upper bead against said tapered centering member, whereafter said segments are allowed to retract radially and rise in said cavity under the bladder pressure until the upper bead is force fitted around the bead ring.

Abstract: A method of and a device for measuring the radius of a grinding wheel during the rotation thereof, said grinding wheel being supported by at least one pivoting arm of predetermined length and urged against an object to be ground having predetermined dimensions, wherein the value of the angle formed between said pivoting arm in relation to a fixed direction is measured, and an electric signal in relation to the value of the measured angle is generated and fed to a computer together with electric signals corresponding to predetermined fixed parameters for generating from said signals an electric signal proportional to the radius of the grinding wheel. This invention is applicable notably to the control of the speed of rotation of the grinding wheel as a function of the radius thereof which decreases as a consequence of the normal wear of the grinding wheel.

Abstract: This press comprises a frame structure, an unloading station on one side of said frame structure, a mold, a cross member extending over said frame structure and movable in relation thereto between a molding position in which the upper portion of the mold is vertically aligned with the lower portion of the mold, and an unloading position in which said upper mold portion is vertically aligned with said unloading station. The cross member is mounted in cantilever fashion at one end to a support having a vertical axis and is adapted to pivot about this vertical axis and slide along said support. The press is intended notably for vulcanizing tires and affords a considerable reduction in the mold loading and unloading time while being more reliable in operation.BACKGROUND OF THE INVENTION1.