Abstract: A device for fastening a holding part on an eyeglass lens placed on a plate comprises an arm adapted to receive removably the holding part and a carriage on which the arm is able to pivot between a loading and offloading position and a fitting position. The carriage is mobile on a frame between a rest position and an end of travel position over a path on which the arm is brought into alignment in the fitting position with the plate. The carriage is at least in part adapted to move in a straight line in a first direction controlled by a guide fastened to the frame and the pivot axis of the arm is in a second direction orthogonal to the first direction. A belt and gear transmission is operative between the carriage and the arm to move the arm from one end position to the other.

Abstract: This relates to a returnable/refillable container in the form of a blow molded polyester biaxially oriented bottle wherein the container includes a domed base construction wherein the wall thickness gradually and smoothly increases to a maximum at the center of the dome. This also relates to a specially configurated preform which is blow molded to form the container and a specially configurated blow mold cavity for receiving a preform having a lower axial projection in the form of an elongated gate without crushing.

Abstract: An actuator comprising, in a casing, a mechanism which is controlled by a motor and which is adapted to control an output member. The mechanism including in particular a moveable thrust unit which is arranged generally for to and fro movement. The casing is liquid-tight, and incorporates a sump for containing a liquid lubricant. A pump is associated with this sump, the pump being arranged to be actuated by the moveable thrust unit. The suction port is in communication with the lower part or sump of the casing, while its delivery port is in communication with the mechanism in at least one region of the latter that is to be lubricated.

Abstract: A device for phase detection testing any kind of optical system, in particular an ophthalmic lens, comprises, along an optical path, an emission device which constitutes a light source, a holding station which receives the optical system under test, an array, a receiving device which receives the image observable downstream of the array, and a data processing device which exploits this image by phase detection. Between the light source and the holding station is a separator element which constitutes on the axis of the optical path a semi-reflecting surface. The receiving device is disposed to the side, in line with the separator element. The data processing device includes a ray plotting program and a calibration system allowing for theoretical and manufacturing aberrations due to the separator element.

Abstract: A device for phase detection testing any kind of optical system, in particular an ophthalmic lens, comprises along an optical axis, an emission device which constitutes a light source, a holding station which receives the optical system under test, an array, a receiving device which receives the image observable downstream of the array, and a data processing device which exploits this image by phase detection. Between the holding station and the array is a convergence adapter element and the data processing device includes a ray plotting program and a calibration system allowing for theoretical and manufacturing aberrations due to the convergence adapter element.

Abstract: A torsion damping device has a pair of guide rings, a damper plate and a hub. Resilient are confined between the two guide rings, and arranged on either side of the damper plate so as to bear on the damper plate or the hub in such a way as to exert a biassing and gripping force thereon. There is a radial clearance between the hub and whichever one of the two coaxial parts of the damper is freely mounted with respect to the hub, in such a way that the hub is floatingly mounted with respect to that coaxial part.

Abstract: An internal combustion engine has first and second cylinders (12, 14), the first cylinder (12) having a larger swept volume than the second cylinder (14) and the second cylinder being formed in the crown of the first cylinder. First and second pistons (16, 18) are reciprocable respectively in the first and second cylinders (12, 14), the second piston (18) being formed as a protrusion on the crown of the first piston (16). A combustion chamber (20) is formed in the second piston (18) with an air port (44) opening into the first cylinder (12) and a second port (40) opening into the second cylinder (14). A first inlet is provided (25) for supplying air or the like into the first cylinder (12) during an induction stroke of the first piston (16) together with a fuel inlet (36) for supplying fuel to said second cylinder (14).

Abstract: An apparatus for the continuous wet treatment of woven fabrics and knitted fabrics comprising a casing providing with an entry slot and an exit slot for the fabric under treatment, a curved widening cylinder, a series of rollers covered with a rubber layer with their axes parallel and transverse to the fabric feed path, the rollers being arranged in zig-zag formation in a vertical plane one in contact with the next. The series of rollers comprises in succession idle rollers, presser rollers and a motorized roller. The apparatus also comprises a squeezing roller positioned in proximity to said exit slot in contact with the motorized roller. There are also provided devices for adjusting the contact pressure between the presser rollers and their adjacent rollers and between said squeezing roller and its adjacent roller, and pairs of scraper seals positioned against the side ends of each mutually contacting roller pair of said series.

Abstract: A pressure vessel contains a flexible separator comprising three layers, an outer layer, an inner layer and an intermediate layer which is at least partly impermeable to gases. The intermediate layer comprises a metal film. A particular application of the pressure vessel is to braking circuits.

Abstract: An emulsifying device (10) for liquids, in particular milk, comprises a container (11) containing the liquid to be emulsified and to which is connected near the bottom a first horizontal duct (14) connected to a steam source. The first duct (14) has a constriction (15) downstream from which is connected a second duct (17) with an opening at the top flowing into said container (11) in a position near the level of its edge so as to draw in air and emulsified liquid reaching the upper opening level as the steam passes into the first duct (14). Container (11) comprises a drain (12) with a closing plug (13) removable to take away the emulsified liquid.

Abstract: A torsion damper has a viscous damping device, a dry friction damping device, two guide rings, a damper plate and a hub. The viscous damping device is arranged outside the zone which is bounded by the guide rings, and is confined within a housing comprising two housing portions which are movable with respect to each other. Mutual engagement structure which couples components together for simultaneous rotation, are provided between (a) the hub and one of the housing portions and (b) the other portion of the housing and that one of the coaxial parts of the damper which is not coupled with the hub for rotation therewith.

Abstract: An apparatus for conveying, accumulating in succession and arranging products or ready-made articles in groups, with the products or ready-made articles being fed to the same apparatus on one or more rows of conveyors, wherein the individual packages or the individual ready-made articles are orderly positioned inside independent saddles, positioned in succession, and driven along the pathway of the apparatus. The saddles are moved by a continuous, closed-loop element, to which they can be selectively and elastically linked by friction elements, and are disengaged by simple engagement with stopping elements.

Abstract: A printing machine suitable for printing objects with an oblong or a circular transverse cross-section includes a fixed printing shaft. An object to be printed is rotated about the printing shaft in contact with a flat printing plate or the like carried by a mobile assembly. The distance between the printing shaft and the printing plate or the like is corrected automatically. A drive shaft rotates the object to be printed through a transmission system which provides at least two transmission ratios.

Abstract: A safety device in the control of a motor vehicle automatic transmission, wherein the gear selector lever is provided with a mechanical locking device which is operated by a cable connected to the brake pedal and locks the lever in predetermined positions, from which it can be released only by pressing the brake pedal.

Abstract: A top shield arrangement for elongated filter traps, comprising an elongated sleeve member adapted to receive through one and thereof at least one filter trap such that the filter trap lies completely inside the sleeve member. The sleeve member is formed at the other end thereof for preventing withdrawal of the filter trap from the other end. A wafer seal is inserted into the sleeve member at the one end of the sleeve member for preventing unauthorized removal of the filter trap from the sleeve member through the one end thereof. The top shield arrangement of the invention protects filter traps against tampering by unauthorized persons.

Abstract: An interpupillary distance measuring device comprises a box with a front panel whose position corresponds to an eyeglass frame. The device has a main axis perpendicular to the front panel and equidistant from the eyes of the subject. A horizon plane perpendicular to the plane of the face passes through the main axis and the eyes of the subject. In the box are a master lens and a point light source at the focus of the lens and on the main optical axis. The point source creates at the center of the eyes of the subject corneal reflections, virtual images of which are formed by the lens. These virtual images form real objects for an objective lens which forms a pair of real images on a measurement scale formed by one or more linear arrays of photosensitive charge transfer devices. The device scans sequentially to identify the elements of the arrays at which the images are formed by means of the rank of those elements.

Abstract: A unifocal ophthalmic lens has a part-spherical concave surface and a part-spherical convex surface. Its refractive index varies radially from its optical axis to its periphery. It has a null geometrical power so that its optical power is due only to the variation in its refractive index.

Abstract: A unifocal ophthalmic lens has part-spherical concave and convex surfaces. Its refractive index varies radially from its optical axis to its periphery. The variation of the refractive index is governed by a law such that the absolute value of the optical power of the lens is significantly greater than its geometrical power when the optical power is computed using the refractive index of the lens on its optical axis.

Abstract: A piston for an hydraulic brake is of the kind comprising an insulating core member and a cup member, joined together by fastening means arranged between the core and cup members.This fastening means is constituted as follows. The base portion of the cup member has a central projection, while the core member has a central cavity which is open at the level of the outer projecting surface of the cup member and which is closed by an end wall forming the base of the cavity, with the projection from the cup member base portion extending through a hole in this base wall. An axially acting resilient means is engaged on the free end of the projection within the cavity and engages against that face of the wall which is directed away from the base portion of the cup member. The invention is particularly applicable to the control of hydraulic brakes, in particular for automotive vehicles.