Abstract: A vulcanizer and method for vulcanizing sheets of unvulcanized elastomeric material is presented in which the sheets are formed from generally rectangular small sections of unvulcanized material where the edges of the sections are tapered and mated together along their maximum dimension to form longitudinally extending seams within large sheets. The sheets are wrapped onto a series of concentrically assembled mandrels having different diameters, which serve as individual supports for the multiple wraps of sheet material. Each mandrel is received within the mandrel of the next larger diameter and is supported within the vulcanizing chamber by self-supporting mounting devices or carriage.

Abstract: For the production of gas-permeable briquettes it is suggested to provide parts of the surfaces having higher porosity by performing the pressing operation in partial areas of the press surfaces against the material to be compressed. Press rolls (2), presses or briquette moulds, respectively, comprise depressions, grooves or blind bores (4), respectively, for receiving material to be pressed.

Abstract: A rotary mold having a removable rotary mold segment of truncated sectorial shape having top, bottom, side, and end wall surfaces wherein the top arcuate surface is adapted for molding, and the generally planar bottom surface is connected to the top surface by two end walls in radial alignment with the axis of rotation defining the arcuate top surface wherein the bottom surface joining said end walls is in perpendicular alignment with one of said end walls.

Abstract: Improvements in the mold opening and closing actuator mechanism in a multiple station, multiple clamp assembly rotary blow molding machine for the manufacture of plastic bottles and the like and improvements in the automatic unloader mechanism for the machine. In a rotary machine having an even number of stations and clamp assemblies rotatably indexable from station to station, the clamp assemblies are closed and opened by rotatable cranks and toggle mechanisms. Adjacent clamp assemblies are opened and closed by rotating the respective cranks in opposite directions for either the closing or the opening movements of the clamp assemblies. Rotary actuators at the mold closing and mold opening stations rotate 180.degree. to actuate the clamp assemblies. By providing the above opposite rotational actuation of adjacent clamp assemblies the need to reverse or retract the rotary actuators during indexing of the clamp assemblies is eliminated as is the time required to reverse or retract.

Abstract: A machine and method to operate the machine to provide a plurality of valve-like perforations in the rubber-like backing of a nap mat or carpet by delivering the nap mat or carpet to and under a spiked roll. The machine includes a sensing device to ensure the leading and trailing edges of the nap mat are not perforated by the spiked roll.

Abstract: Device for striating laterally or diagonally an unvulcanized rubber strip at equal intervals to create air escapes comprises a pleat roll having a plurality of rollers, each of which presses the rubber strip to the pleat roll independently and which have gaps between roller of the first pressing member. A second pressing member includes a plurality of roller, each of which presses the rubber strip to the pleat roll independently and which have the widths greater than the gaps between rollers of the first pressing and the gaps between rollers of the second pressing member narrower than the widths of the rollers of the first pressing member. The second pressing member is positioned to connect the discontinuous striae of the rubber strip in the lateral or diagonal direction, which are striatec with the first pressing member and the ridges of the roll. A transfer device is positioned interpose to the rubber strip between the pleat roll and the first and second members.

Abstract: The briquette making machine comprises a waste-receiving bin (11), one wall of which is defined by a plate (12) to sweep waste towards a guillotine (15) forming another wall of the bin (11). The guillotine (15) comprises a blade portion (19) to shear any waste straddling the bin and a compression chamber defined by the blade portion (19) and a wall (17). With the guillotine (15) in its most downward position a piston (23) configured to conform to the cross-sectional shape of the compression chamber clears the compressed waste therefrom by further compressing it against and eventually through a constricted discharge opening. The opening is defined by wheels (25, 26) which longitudinally groove the emergent briquette.In a preferred embodiment, the guillotine (15) and the piston (23) are advanced and retracted by first and second double-acting hydraulic rams (respectively 9 and 23, 24). There is a third ram (27) holding one (26) of the wheels against the emergent briquette. The hydraulic circuitry (FIG.

Abstract: A clamp mechanism for selectively locking and unlocking a first member in a first position relative to a second member comprises a linkage system connecting the first and second members and drive means for articulating the linkage system for moving the first member relative to the second member. A fluid link is provided for locking the first member in position relative to the second member wherein the fluid link is actuated upon sensing the first member approaching the first position.

Abstract: A press for forming sheet material into a shaped article comprising a frame, first and second complementary dies, a cam supported by the frame for reciprocally moving the first die along an axis between a first position axially spaced from the second die and a second position fully mated with the second die, the cam including a dwell period when the first die is in the second position. The press includes a bolster supporting the second die for axial movement between upper and lower limits, the bolster being axially spaced from the upper limit by movement of the first die to the second position. The press also includes a hydraulic power circuit responsive to the position of the cam for normally biasing the bolster toward its upper limit under a first hydraulic pressure and for biasing the bolster toward the upper limit under a second hydraulic pressure during the dwell period, the second hydraulic pressure being greater than the first hydraulic pressure.

Abstract: A method and an apparatus for producing concrete articles, such as shaft rings, with projecting elements such as climbing irons or stirrups, by means of an automatic inserting mechanism which removes the climbing irons from a magazine and automatically inserts them into a mold core. These climbing elements are guided automatically to a core segment and are brought into housings therein during a time interval between the ejection of a completed concrete article from the mold cavity in a first working cycle and the next following work cycle in timed overlap with carried out work steps during this time interval. This automatic process takes place while the operator withdraws and takes away a completed article from the machine at the end of a work cycle and prepares the machine for the next work cycle. This leads to equally short machine cycle times for completion of concrete articles with or without climbing elements.

Abstract: A single-piece, injection molded rack for holding test tubes or similar articles and a mold for producing the same. In a preferred three-tiered form, the intermediate tier is a lattice defined by the intersection of two superposed sets of parallel bars. These two sets of bars are formed by two pairs of correspondingly channeled slides that cooperatively engage to form a portion of the mold cavity corresponding to the lattice. The channels in each set of slides are aligned with the path of movement of the slides to permit their sliding, uniaxial movement relative to the molded bars. To further enable this sliding movement between mold segments and the molded rack, the connecting supports between the top tier and the intermediate tier are provided on the sides of the rack, while the connecting supports between the intermediate tier and the bottom tier are provided on the front and rear of the rack.

Abstract: A device and a method for transferring inserts into a mold which has at least one insert receiving cavity. Included in the device are an insert positioner and an insert actuator. The insert positioner includes a transfer plate, which has a mold face with at least one insert transfer channel aperture which opens into an insert transfer cavity. Included in the insert actuator are an actuator plate, and a plate actuator. The actuator plate has at least one actuator pin extending therefrom. The actuator plate and the transfer plate are connected to so that each of the actuator pins is substantially axially aligned with the central axis of an insert transfer channel. For moving the inserts into the mold the plate actuator is adapted to move the acutator plate toward the transfer plate and thereby convey each actuator pin at least partially through each corresponding insert transfer channel. The device is adapted for operation by hand.

Abstract: Rotary molding apparatus particularly for use with "soft"-type baking doughs and like media includes, in combination with a rotary die roll which carries molding cavities in its outer surface, a feed roll for forcibly filling the molding cavities with media from a supply hopper, and media-trapping retention means disposed adjacent the die roll between the feed roll and a take-off conveyor which receives the molded media from the cavities and conveys the shaped media away for further processing. The media-trapping retention means keeps the shaped "soft" media within the molded cavities as the die roll rotates toward the take-off conveyor, and the take-off conveyor preferably is disposed in complementary wrapping engagement with and along at least the lower extremities of the die roll. In its most preferred form the media-trapping retention means includes a shoe with a curved face which is resiliently biased against and in sliding contact with the outer surface of the die roll.

Abstract: An in-mold label dispenser (10) for a plastic blow molding machine (12) is disclosed as including a base (24) on which label magazines (26) are mounted along with a subbase (34) which is moved by a first actuator (40) between aligned and transfer positions with respect to open mold sections (16) of the mold (14). A shuttle (42) of the dispenser has label carriers (44) thereon and is movable with the subbase movement as well as being movable toward and away from the mold (14) by a second actuator (46) that moves with the subbase under the operation of the first actuator (40). An enlongated support (36) preferably mounts the shuttle (42) for sliding movement under the impetus of the second actuator (46) between a withdrawn position adjacent the label magazines (26) and an inserted position where the labels received by the label carriers (44) are aligned with cavity sections (18) of the mold to deposit the labels upon operation of the first actuator (40).

Abstract: An apparatus for handling tires to be placed in a vulcanizing machine--particularly for retreading the tread or the whole tire--and for the removal of the tire from the machine, comprises: a housing developed along and behind the front of a set of such machines. The housing has a conveyor and slide rails. A carriage is movable on the rails so that it can reach transfer positions near each of the machines. An arm with a plurality of sections and having several degrees of freedom include a drawing device to engage the upper rim of a tire in horizontal position, to transfer it from an open mold on to the conveyor, and to transfer it from a drawing position as far as the open mold of a machine.

Abstract: A crosshead (10b) and a method are provided for extruding a tubular layer of a thermoplastic material, or for coextruding tubular layers of various thermoplastic materials, without incurring a weld line. The crosshead (10b) includes a supply passage (46) which provides an annular flow of thermoplastic material around a mandrel (18b) by providing separate flows that merge distal from a supply passage (52), a first compressive forging passage (72) that provides static mixing by transverse viscous shear, a longitudinal shear mixer (44a) that provides static mixing by longitudinal viscous shear, and a second compressive forging passage (94) that provides static mixing by longitudinal shear, and an extrusion opening (110).

Abstract: An in-mold label dispenser (20) for a plastic blow molding machine of the rotary wheel type is disclosed as including a base (50) on which a carrier arm (52) is pivotally mounted by a support (58) to swing a dispensing head (60) on the carrier arm along a curved path between withdrawn and inserted positions with respect to mold sections (32) of an adjacent open mold (28) on the machine wheel (24). At least one label carrier (62) is mounted on the dispensing head for movement between retracted and extended positions, and at least one label magazine (64) is located adjacent the dispensing head with the carrier arm in the withdrawn position. A drive mechanism (66) of the label dispenser (20) includes a first drive (68) that pivotally moves the carrier arm and also includes a second drive (70) that moves each label carrier between the retracted and extended positions during cyclical operation that transfers labels from the label magazine to the molds on the machine wheel.

Abstract: A machine is provided for forming a supply of jellifiable fluid into jelled spherical droplets by pouring that fluid out of a housing through nozzles while intersecting the path of the fluid with knives rotating in a horizontal plane on a rotated axle. Valves for the nozzles and the rotational speed of the axle are subject to adjustment. A mechanical arrangement is provided for holding all of the valves open to a desired degree against a closing force provided by springs. A jellifying agent is fed through the axle and out onto the knives so that jellification begins to occur immediately as the jellifiable fluid is cut into segments by the rotating knives.

Abstract: A transfer apparatus is provided for advancing a molded article from the molding station to the flash trimming station of an automated molding press. The transfer apparatus is comprised of a support member having a retainer and an expandable clamp member. The expandable clamp member is mounted within the retainer. The expandable clamp member, in its fully expanded position, has an interior size sufficient to hold a molded article by flash formed about the outer edge of the molded article. In the contracted position, the clamp has an inner edge larger than the size of the flash formed about the outer edge of the article. The transfer apparatus is pivotally mounted to oscillate between the molding station and the flash trimming station. In use, the transfer apparatus is positioned with the clamp member in the fully expanded position between the molds of the molding station so as to form a molding surface against which the flash can be molded in a uniform configuration.

Abstract: There is described a tire vulcanizing press, comprising a frame provided with a lower supporting plate for allowing a mold for vulcanizing the tires to rest upon, and an upper plate that is mobile with respect to the lower plate. The mold comprises a lower cheek, an upper cheek that is mobile with respect to the lower cheek, and a series of sectors, that are mobile with respect to an annular-containing element, each of which is radially mobile with respect to the upper cheek. The mold further comprises a connecting means for fixing the lower cheek to the lower plate, and the upper cheek and the annular element to the upper mobile cheek, and which comprises a series of rotating bodies on the lower and upper plates which are actionable from the outer side of the plates with respect to the mold.