Abstract: A control assembly to control the rate at which a food material is conducted to die cavities of a rotary press. The control assembly includes a roller subassembly, a first roller rotatably supported by the roller support assembly, and a second roller rotatably supported by the roller support assembly and located adjacent the first roller. The first and second rollers form a feed gap therebetween to receive the food material, and the second roller is also supported for movement toward and away from the first roller. The control assembly further includes an adjusting subassembly connected to the roller support subassembly to move the second roller toward and away from the first roller to vary the size of the feed gap, and a roller drive subassembly connected to the first and second rollers to rotate those rollers to pull the food material through the feed gap and to direct the food material to the die plate.

Abstract: A support assembly for a rotatable punch drive plate in a rotary press having a die plate forming a multitude of die cavities and supported for rotation about a given axis, and a multitude of punches supported for axial reciprocating movement in the die cavities. The punch drive plate engages the punches, and rotation of the die plate and the drive plate reciprocates the punches to force a food material into the die cavities, to mold the food material therein into tablets and then to eject the tablets from the die cavities. The support assembly includes a multitude of support subassemblies spaced around and engaging the punch drive plate. These support subassemblies preferably both support the drive plate for rotation about the given axis and axially flex the drive plate toward and away from the die plate as the drive plate rotates about the given axis.

Abstract: An apparatus for charging a press for making brakeshoes and the like utilizes an intermediate mold carrying precompacted powder positioned on the press mold. The powder is engaged by the raised press ram and a lowered ejection ram such that the powder trapped between the rams is transferred to the press mold. The intermediate mold is then removed, a counter-pressure plate swingably mounted on a frame of the apparatus is applied into registry with the press mold and the press operation ensues.

Abstract: A method for quality assurance in the manufacture of tablets. Tablet samples consisting of a plurality of tablets are taken whose actual weight is compared with their nominal weight, so that the tabletting machine is subsequently adjusted according to the deviation in order to adjust the weight of the tablets to the nominal weight. If the sample of tablets contains one or several tablets which, as so-called error tablets, show significant deviation from the nominal weight due to flawed manufacture, inaccuracy of the result so obtained is avoided if prior to adjustment of the machine, the weights of the individual sample tablets are measured and compared with one another. If it is found that the sample contains tablets with significant deviation from their nominal weight, such tablets may be taken into account in the statistical analysis by corrective computation.

Abstract: A press, especially for the manufacture of die-formed parts of dimensional accuracy made of powdered materials is described, which can be equipped and used interchangeably either for the use of the so-called smoothing process or the so-called plunger process. It includes a press support 103 on which a fixed press bed 104 and a vertically slidable press frame 105 are mountred for movement relative to each other by a mechanical drive, preferably a toggle linkage 106, to form a main press ram. Further, it has a bottom ram passing upwardly through the press bed 104 which serves as a smoothing ram or a plunger ram, being operated for both purposes by a double-arm lever 123 pivoted on the press support and actuated by a rock lever 133 likewise pivoted on the press support 103 and having a sliding pivoting connection to the double-arm lever 123.

Abstract: Method for manufacturing stones in a press provided with a mould including several moulding rooms and taking a fixed position, a stamp arranged above the mould and being movable up and down, a table arranged under the mould and being movable up and down, a supply conveyor for supplying empty product plates and with a discharge conveyor for discharging the product plates carrying stones shaped in the mould. The moulding mass is compressed in the mould while under the mould a moulding plate supported by the table is located, which is provided with upright ribs for shaping bevelled edges on the stones. During compression the stamp is moved downward until the stamp is located at a certain distance from the table, determined by cooperating stops provided on the table and on the stamp, after which the moulding plate is removed from between the table and the mould, while simultaneously a product plate is moved between the table and the mould.

Abstract: In an apparatus for producing shaped bodies of non-swelling mixture, of fiber materials with a heat hardenable binding medium, the shaped body of a complex shape can be formed so that at its visible side seams are not formed during pressing, by means of an additional pressing of a pre-pressed mixture in a one piece cavity press member before it reaches its final shape.

Abstract: A continuous high pressure press especially adapted for molding thermosetting or thermoplastic sheet material comprises two tracks each carrying a plurality of molds which converge at the press input where sheet material is fed in. Each track is engaged by two groups of presser rails which alternately move forward while applying molding pressure and move in reverse while retracted. The pressure is applied to each rail by a hydraulic actuator acting through a pinion which meshes with a rack formed in the rail. The pinion is rotated by another hydraulic actuator carried by the piston rod of the first actuator.

Abstract: An automatic press includes a first plate (2, 5), which is movable in translation along an axis, and a hydraulic jack (7), of which a piston (6) is secured to the first plate. The hydraulic jack commands the translation movement of the first plate to bring it into a first predetermined position (A) in relation to a reference postion (R1). The jack (7) is supported by a frame (3, 4, 8, 9). The press includes also a second plate (10, 12, 13), which supports an object (30) to be pressed; this second plate is situated facing the first plate. The jack (7) includes a mechanism (41) for bringing into control the position of the plate with the set predetermined position (A), and an opto-electronic member (16) for referencing the momentary positions of the first plate in the course of its movement. The automatic press has application to the manufacture of objects by pressing and also to welding done by bringing the plates together.

Abstract: A circular pelletizing machine for compressing of powder or grain materials, comprises a rotatable matrix disc with a plurality of circumferentially distributed matrices, upper and lower punches located above and below the matrix disc respectively, at least two pre-pressing elements movable relative to one another and acting upon the upper and lower stamps so as to pre-press pellets of a material, at least two main pressing elements movable relative to one another and acting upon the upper and lower stamps so as to finally press the pellets of the material, an adjusting motor arranged to adjust a distance between the main pressing elements relative to one another, computer device arranged to control the adjusting motor, and device for measuring a pressing force of the pre-pressing elements and supplying data of the measurement to the computer device so that the computer device controls the adjusting motor and therefore the distance between the main pressing elements in dependence upon the measured pressing fo

Abstract: The invention relates to the production of granulates by using a tabletting machine comprising at least one top punch and one bottom punch which co-operate with a die formed with a bore, the top punch being displaceable into the bore from outside to compress powder accommodated in the bore and the bottom punch displaceable in the bore being displaced within the bore for ejecting the powder compressed into a tablet, the tabletting machine additionally comprising a powder feed unit which introduces the powder into the bore when the top punch is in its raised position. According to the invention, a perforated plug in the bore of the die in conjunction with a granulate stripping, transporting and collecting system arranged beneath the lower end face of the perforated plug is used instead of the displaceable bottom punch for producing granulates.

Abstract: A tablet press with a mould table and with multi-part rams whose movable ram parts slide along a stationary ram part having an internal hollow space connectable periodically to a suction device which removes, by suction mouldable material, dust which has penetrated in the interior of the movable ram, thus preventing the ram from being blocked with multiple material dust and making frequent cleaning and servicing of rams necessary.

Abstract: A tablet press (10) comprises a plurality of dies (17), a plurality of upper rams (18) and lower rams (19) each having a ram shaft (20, 21), a plurality of ram guides (22, 23), and support means (13, 14, 15) for supporting the dies and the ram guides, the arrangement being such that each ram (18, 19) is mounted for reciprocation in an associated one of said ram guides (22, 23) and each pair of one of said upper rams (18) and one of said lower rams (19) cooperates with a respective one of said dies (17); the press further comprising an upper intermediate wall (28) having a plurality of holes (34), one for the passage of each upper ram shaft (20), the upper intermediate wall (28) engaging at its edges with the support means (13) to form a dust barrier between the dies (17) and the upper ram guides (18), and a lower intermediate wall (28') having a plurality of holes (34), one for each lower ram shaft (21), the lower intermediate wall (28') engaging at its edges with the support means (14), to form a dust barrie

Abstract: In an anvil assembly for powder-compacting press wherein an article is compacted of powder material against the face of the anvil clamped in position over a die cavity filled with powdered material, a reciprocable punch being disposed at the bottom of the die cavity for compacting the powdered material against the anvil face, the anvil is provided with a movable face portion which, during compaction of the powder material, is displaced away from the die cavity, compressing an elastomeric return spring.

Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.

Abstract: A mold for producing anisotropic permanent magnets consists of a cavity defined by a thin-walled tubular lining element closely surrounded by an electrical field coil, reinforced by a metal ring enclosing the field coil so that a magnetic field of a given strength can be generated in the cavity with less power than in the case of the conventional field coil normally positioned at a relatively greater distance from the interior of the cavity. The lining element can be composed of a non-metallic material such as a ceramic, or sintered Al.sub.2 O.sub.3.

Abstract: A rotary tabletting machine comprises a rotor with press tools for compression of tablets arranged around the periphery thereof. Pressure rolls contacting said press tools are mounted on both sides of the rotor. The machine is provided with a means for batching tablet material, a means for controlling said means for batching tablet material, and a hydraulic stabilizer of compressive pressure. The hydraulic stabilizer is equipped with a hydraulic pressure regulator connected with said controlling means and incorporating a check valve, a hydraulic damper and a capillary, the inlet of said check valve being coupled to the hydraulic stabilizer, and the outlet thereof being coupled to said controlling means through the hydraulic damper and to a drain through the capillary.

Abstract: A multi-sectional filter tip assembly is initially made with two charcoal filter sections and alternate sections of cellulose acetate fibrous material with a fibrous section at each end. The filter tip assembly is then compacted by a pin compactor which punches a recess into each fibrous end of the filter tip assembly while at the same time forcing the displaced acetate fibrous material into the charcoal sections to compact the charcoal. Upon removal of the pins of the pin compactor, a recess is formed in each end of the filter tip assembly.

Abstract: A tablet-making machine is provided which includes relatively movable upper and lower punches for compressing a charge of material into a tablet. The machine includes a die head having a plurality of die cavities and axially-extending passageways in which the lower punches are mounted for reciprocating movement. Suitable drive means are also provided for controlling the reciprocation of the lower punches within the axial passageways relative to the die head. In accordance with the invention, each of the lower punches is provided with an opening extending completely through the punch and in a direction transverse to the longitudinal axis of the lower punch. Spring-biased plungers are positioned within each of the transverse openings and may be adjusted relative to the lower punches.

Abstract: A tablet compressing machine includes strain gauge sensors 5, 5' for monitoring the forces applied to piston rams 1, 2 by pressure rollers 3,4. The strain gauges are connected in a bridge circuit whose amplified output is fed to a mean value generator 15 and a logic control unit 9. The former generates a mean pressing force curve (A in FIG. 3) while the latter causes preset individual limit values for the pressing force signals (B, C in FIG. 3) to track fluctuations in the mean value curve, and compares the instantaneous pressing force signals with the individual limit values. Whenever these limit values are exceeded or fallen below the machine is disabled and the faulty ram is indicated on a display 14 by means of a sensor 7 which signals the ram being monitored. Means are also provided for disabling the machine whenever the mean value exceeds or falls below adjustable tolerance limits.

Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.

Abstract: A self-lubricating tablet press having a force detector for measuring the force required to eject the tablet from the die cavity connected to and activating a lubricator for lubricating the dies and punch faces when the ejection force reaches a predetermined value.

Abstract: There is disclosed instrumentation for use in connection with one or more tablet presses of various types, and in particular rotary tablet presses, for virtually any reasonable combination and number of such tablet presses. Tablet formation information, in particular compression and ejection force information, tablet capping information and force information related to the time of occurrence of punch withdrawal is provided and processed by such instrumentation. This information is selectively applied to converting means which renders the selected information in a convenient data form for processing. Selection of the information may be made for example based on the need or desire to monitor a particular tablet press, tablet press station and/or individual tablet die/punch set combination.

Abstract: The invention relates to an apparatus for stamping candy bits from a string of confectionary material and comprises coacting rotating members, which are disposed eccentric to each other and arranged to squeeze or cut bits of confection from the string and immediately upon the bit being formed, oppositely disposed stamping elements are introduced into the path of travel of the bit to shape it prior to its being discharged from the apparatus.

Abstract: An apparatus for forming a sinterable compact of a powder comprises a pair of respective shafts displaceable toward one another by the action of respective cams and serving to displace opposing ram members to compact a powder between them. Respective plates carrying the ram members are entrained with the shafts and are displaced in the opposite direction by respective pairs of pneumatic cylinders. The rams are thereupon displaced at high rate against the precompacted powder by energizing a disk-shaped coil which repels electrodynamically the plate carrying the rams.

Abstract: A rotary tableting machine has a detachable covering enclosing the principal part of the machine including a turntable. Clean air is introduced into the interior of the covering to collect the powder which is scattered in the air due to the operation of the machine and which would otherwise cause various troubles and stain the room.

Abstract: A method of producing hot pressed products, especially products of complex shapes, wherein the material from which the component is formed is hot pressed between a plurality of die parts of which at least one is of substantially uniform density and substantially compressible. This enables the shape of the die part to conform exactly or nearly so to the shape of the body being sintered throughout hot pressing, thereby resulting in obtainment of products of complex shapes.