Abstract: The cavity or gap between shell and arbor of a hydraulically inflatable roll also houses metal support elements which may be adjusted to fill that gap partially or wholly. The roll support elements are mating wedges, preferably a pair of sawtooth profiled metal ring assemblies with inclined faces bearing on each other. The degree of support is varied by moving one assembly axially on the other. Hydraulic apparatus for so moving an assembly is contained with the roll arbor.

Abstract: Destruction of the bond of urethane roll covers to metal paper machine rolls is eliminated by venting the interface of the urethane and the metal to the atmosphere. Venting of the interface can be accomplished by drilling small holes through the roll periphery, by applying an adhesive substrate to the roll with grooves exposed to the atmosphere, by providing porous wicks between the roll and cover or by grooving the periphery of the roll to provide channels exposed to the atmosphere.

Abstract: The present invention provides a linear slide ball bearing light in weight and suitable for guiding a high speed reciprocal movement, the linear slide ball bearing comprising a bearing case formed of a molded light weight material such as synthetic resin and aluminum, a pair of bearing races formed of a rigid material and attached to the bearing case, the bearing races being provided with no-load guide grooves for forming no-load ball guide holes in cooperation with no-load ball guide grooves on the bearing case side and load ball grooves, a raceway table having a rolling groove at the position corresponding to that of the load ball groove of each bearing race furnished in the bearing case, a pair of side covers fitted to both the left and right sides of the bearing case and provided with guide grooves in the inside surfaces in the circumferential direction for forming endless tracks by making both the ends of the no-load ball guide holes and the load ball grooves communicate with each other, and a number of

Abstract: In a process for the production of a heat treated bearing ring with at least one longitudinal slit extending axially therethrough formed by means of two abutting ends lying opposite one another in the circumferential direction, one or more flat band sections of heat treatable strip material are stamped with at least a holding tongue formed on one or both respective abutting ends and a holding recess on the opposite abutting end fitting the respective holding tongue with a force fit. The band section is bent to form a bearing ring, with each holding tongue of the one abutting end radially engaging the respective holding recess of the other abutting end on the respective longitudinal slit. The ring is then heat treated and then the holding tongue is broken out of its respective recess.

Abstract: A composite sleeve for use in a hot-rolling roll for H-section steel and channel steel comprises a working layer adapted to contact the material to be rolled and composed of two layers, i.e., a first outer layer made of one of adamite with graphite, spheroidal graphite cast iron and adamite having high resistance to sticking, and a second outer layer made of adamite or high chromium iron having high resistance to wear; and an inner layer adapted to be out of contact with the material and made of spheroidal graphite cast steel or spheroidal graphite cast iron having high toughness. The first outer layer covers the second outer layer, and the second outer layer covers the inner layer, the three layers of the first outer layer, the second outer layer and the inner layer being joined together by melting.

Abstract: An apparatus for forming helically wrapped spine fin heat exchanger tubes is disclosed which includes a rotatable cutter head operable to cut a strip of thin metal to provide a base portion and a multiplicity of spines integrally joined at one end to the base portion. A tube feed is provided to axially feed smooth tubing past the cutter head. As the tube is fed past the cutter head the cutter head operates to helically wind the spine fin material on the tube. A first drive is provided to drive the tube feed and cutter head in time relation to ensure that the tube is fed through a predetermined minimum distance during each revolution of the cutter head. A second drive is provided to increase the distance through which the tube is fed during each revolution of the cutter head to increase the helix angle of the material being wound onto the tube and correspondingly reduce the spine fin density at selected locations along the tube.

Abstract: A forming roller for corrugating sheet material or for performing other forming operations includes a number of relatively thin discrete forming discs coaxially mounted in compression for rotation with a rotatable mandrel. The forming discs preferably have undulating flutes on their peripheral surfaces to form the roller's forming surface. The forming discs may optionally include irregular openings extending therethrough in an irregular pattern to vary the resonant frequency, thereby reducing the operating noise of the roller. The openings may also be filled with a sound-absorbing material. The roller may also be equipped with means for heating the forming roller sheet material, vacuum means for retaining the sheet material against the roller surface, and sound-absorbing spacer discs between adjacent forming discs.

Abstract: A heat pipe is provided with a multiplicity of longitudinal deep grooves and ridges formed in the inner peripheral surface thereof. A plurality of shallow grooves are formed by a plastic work in the top surfaces of the longitudinal ridges separating the deep grooves. Parts of burrs formed as a result of the plastic work for forming the shallow grooves are extended over the deep groove so as to form bridges connecting adjacent ridges over the deep grooves.

Abstract: An ink applying sleeve of resilient micro-porous ink retaining material is confined between a pair of circular flanges mounted on a connecting support hub. A cylindrical ink retaining unit is also mounted on the center hub and is confined between the flanges to support the sleeve. The unit includes a stack of thin plastic discs which define concentric annular ink retaining capillary passages or chambers for receiving a supply of ink. The concentric chambers are interconnected by a series of radially extending passages which control the outward radial flow of ink from the concentric chambers into the micro-porous sleeve. In one form, the thin plastic discs are heat-formed from thin sheet plastics material and have a center hole for receiving the support hub.

Abstract: Components such as lids (9) and electronic chip carriers (10) are assembled by registering respective mating faces of each component. An array of assembly stations (75) are formed on an upwardly extending edge (67) of a base (66) having a special inclination. For example, a lid (9) is supported with its mating face upturned and a carrier (10) is supported with its mating face downturned upon the upturned face of the lid (9) on the base (66). The inclination causes the components to slide relative to each other and the base in a given direction within each station (75). A plate (92) overlies a plate (72), supported on and inclined with the base (66). Plate (72) has an opening (74) and plate (92) has an overlying opening (94) to each station (75). The openings (74) and (94) have respective reference edges for stopping sliding of, and thereby positioning an upturned lid (9) and a downturned carrier ( 10) thereupon with a desired registration.

Abstract: Apparatus and means for assembling strips in grilles, comprising a carriage (24) displaceable vertically on a sub-frame, and a device (26) displaceable horizontally on the sub-frame parallel to the slots in the strips, and comprising a table equipped for receiving and centering a strip, and for enabling a frame forming an assembly jig to be retained in successive predetermined positions in which the slots in the strips carried by the frame face the path of the strip carried by the movable device.

Abstract: A protrusion is formed on the free end of an axially extending lip of an outer race member. The free end of the protrusion is axially and radially spaced from the free end of the remaining part of the axially in-turned lip to permit the passing of a reduced end of a reduced end roller. The reduced end rollers are inserted into the outer race member through the protrusion. After all the rollers are in place within the outer race member the free end of the protrusion is closed by heating the protrusion and pressing the protrusion to provide an in-turned lip of substantially the same shape throughout the circumference of the lip.

Abstract: A web punched by a fin press and continuously fed therefrom is intermittently fed by increments equal to a desired number of tiers of punched holes in the web into a space below a pressure plate. The web is then held under suction by the pressure plate and cut off by a cutter into a plate fin. The pressure plate with the cut-off plate fin held thereby is horizontally fed along an interval in the direction in which the web is fed. The plate fin then is released from the pressure plate so as to drop onto a mobile carriage below the pressure plate until hairpin pipes carried by the mobile carriage in upstanding disposition are inserted through the punched holes in the plate fin. The pressure plate moves back to its original position. The above cycle of operation is repeated until a prescribed number of plate fins are fitted over the hairpin pipes. Thereafter, the pressure plate is lowered to depress the plate fins for thereby stacking the plate fins on the hairpin pipes.

Abstract: A heat exchanger having a heat absorbing or radiating panel formed from a plate which is mounted in thermal contact with a pipe or series of pipes. The panel is mounted within a seamless frame member, joining means being interposed between the panel and frame member, to locate adjacent edges of the panel and frame member and secure them together. The plate forming the panel and the frame member may be made from a single sheet of material in a single forming operation.

Abstract: A calender roll wherein a hollow rotary cylindrical shell surrounds a stationary carrier and the latter supports a set of hydraulic cylinder and piston units serving to urge the external surface of a bearing element toward the internal surface of the shell. The external surface of the bearing element is formed with liquid-filled pockets each of which communicates with the cylinder chamber of a pressure generating unit. The cylinder chambers receive pressurized liquid from a pump via first conduits whose resistance to the flow of liquid is more pronounced than that of second conduits which directly connect the cylinder chambers with one or more hydropneumatic accumulators.

Abstract: A heat exchanger unit having opposed pan shaped sections with perimeter flanges which are folded one over the other to secure the sections together. The section having the inner flange is formed with a displaced flange portion or bead all along the perimeter flange portions, which bead is elastically displaced by the folded over flange to form a substantially leakproof joint.

Abstract: In a controlled deflection roll comprising a rotating shell forming the working roll periphery and a stationary beam extending lengthwise through the shell and spaced all around from the inner periphery of the shell, the space between the beam and the inner periphery of the shell, in the neighborhood of the operative plane, is divided into chambers by longitudinal seals and a number of transverse seals, the chambers have separate feed lines and each pair of adjacent chambers has a common transverse seal between them. Neighboring chambers are connected by a duct and non-return valves so that the transverse seal is always acted upon by the pressure of the higher-pressure chamber and pressed against the inner periphery of the shell. The chambers can be formed on the side of the beam facing the nip and also on the side remote from the nip and can also be individually filled with pressure fluid at different temperatures.

Abstract: A method of manufacturing a bearing assembly for the wheels of automobiles, wherein an axle member B is ground by a first step wherein a raceway surface 5 and a cylindrical seat 6 are simultaneously ground, a second step wherein any deviation of the finished raceway diameter from its predetermined size is fed back to a gauge 23 for in-process control which controls the grinding operation on back-face rib surface 21 and shoulder 9, and a third step wherein the back-face rib surface 21 and shoulder 9 are ground simultaneously, while an inner annular member C is ground by a first step wherein a raceway surface 11 is ground, a second step wherein any deviation of the finished raceway diameter from its predetermined size is fed back to a gauge 29 for in-process control which controls the grinding operation on back-face rib surface 21 and front face 10, and a third step wherein the back-face rib surface 21 and front face 10 are ground simultaneously, and the inner annular member B is then fitted on the cylindrical

Abstract: A method for installing a close-fitting cylindrical metal sleeve (26) within a tube (14) secured to a tube sheet (12) of a steam generator, comprising the following steps. First, the sleeve is inserted into the tube until an upper portion (28) of the sleeve is above the tube sheet while the lowr portion (30) of the sleeve is within the tube sheet. Next, the upper portion of the sleeve is radially deformed against the adjacent tube wall to form substantially coextensive permanent bulges (32,34) around the circumferences of the sleeve and the tube. The sleeve is then displaced axially, or longitudinally, relative to the tube, such that the bulge in the sleeve produces a wedge-like mechanical interference seal (40) against the tube wall (16'). Finally, the lower portion (30,38) of the sleeve is joined and sealed (42) against the adjacent tube wall (16') to permanently maintain the tight mechanical interference seal at the upper portion of the sleeve.

Abstract: A roller, for guiding strips of material, that can tilt in one plane with respect to a support shaft located inside the roller but is carefully prevented from moving out of the one plane by separate guides, also inside the roller, which separate guides are independent of the clearances needed in the bearing that allows tilting.