Abstract: The invention relates to a device for preforming and holding a wrapper in a orming mould constituting part of a forming station in a machine for heat-forming receptacles, said device comprising a plurality of applicator fingers movably mounted inside the forming chamber, the bottom wall comprising openings adapted to accommodate each finger, and further comprising finger controlling means which are arranged so as to ensure, on the one hand, the spaced-apart relationship of the fingers with respect to the side wall when the mould is in position of alignment with the wrapper-making device and, on the other hand, the application of said fingers against the side wall in all the other positions of the mould and during the displacement of said fingers along said side wall up to their housing in the bottom wall.

Abstract: A system for manufacturing concrete products comprising: storage apparatus for supplying raw materials; mixer assembly positioned to receive raw materials from the storage means and for mixing the raw materials with liquids to form a wet concrete mixture; receiver assembly adjacent the mixer assembly for receiving wet concrete mixture therefrom; mold assembly positioned to receive wet concrete mixture from the receiver assembly; and cubing assembly adjacent the mold assembly for successively receiving precured products from the mold assembly and stacking them in layers.

Abstract: Apparatus for forming a powder metal compact having an undercut or a reentrant angle in which the portion of the die that results in the compact undercut or reentrant angle is axially movable relative to a stationary part of the die means along the axis of pressure in order to permit automatic straight line ejection of the compact.

Abstract: A block molding machine for manufacturing concrete blocks, the machine including a stripper head, which includes a head plate upon the underside of which there are adjustably supported several plungers, for forming the central openings through a conventional concrete block, each plunger consisting of two bars, that can be adjustably spread apart, as wished, in order to compensate for wear on the outer sides thereof.

Abstract: A machine for manufacturing concrete building blocks faced with a decorative material is provided with a mold having a wall which is removable to expose a face of a freshly cast block. The material is arranged on a horizontal panel alongside the block and this panel is pivoted into a vertical position to apply the material to the exposed face of the upright block. A clamping and vibrating action is applied to the panel to further embed the material in the vertical face.

Abstract: A factory for manufacturing concrete products, in particular prestressed concrete products, comprising a rotary supporting housing of a general cylindrical shape, having a horizontal axis of rotation and conveying moulds, for the concrete products, placed on its internal surface. The rotary housing comprises a circular carrier structure supported by means permitting the rotation of the said carrier, and a structure, resistant to longitudinal stresses, arranged in the interior of the carrier structure. The resistant structure comprises, on the one hand, longitudinal recesses adapted to receive sets of moulds, and, on the other hand, at one longitudinal end means for the attachment of reinforcement wires of the concrete products and, at its other longitudinal end, means for tensioning the reinforcement wires, such that the tensile stresses of these wires are taken up exclusively by the aforesaid resistant structure.

Abstract: An apparatus for the production and deposition of bands in which a pre-winding cavity is positioned below the mould having a base plate integral with the ejecting plunger via a supporting member. The base plate, plunger and supporting member are fixed in space and the mould and cavity are vertically movable relative to the latter. The movable cutting member is connected to a control member which is independent of the vertical movements of the mould. It is possible to impart a reverse movement to the transporting rollers in order to disengage the strip from the access slot.

Abstract: An apparatus for molding a slurry of calcium silicate crystals comprising: a base plate provided with drain passages on the upper surface; a net conveyor having meshes for dewatering the slurry and disposed on the upper surface of the base plate in contact therewith; a frame-shaped lower mold placed on the net conveyor and immediately above the base plate; an upper mold provided on the low surface thereof with dewatering means for dewatering the slurry and movable into the lower mold to press and dewater the slurry in cooperation with the lower mold and to thereby form a shaped product; drive means for raising and lowering the lower mold; drive means for raising and lowering the upper mold; and lower mold holders movable with the upper mold and also movable upward and downward independently of the upper mold.

Abstract: A system for manufacturing concrete products including: mixing apparatus for continuously mixing liquid and raw materials to form a wet concrete mixture; receiver apparatus adjacent the mixing apparatus for receiving the wet concrete mixture and maintaining therein at least a predetermined static head; and mold apparatus positioned to repeatedly receive precompacted wet concrete mixture charges from the receiver apparatus.

Abstract: Apparatus for forming concrete building blocks which is constructed and arranged (1) to minimize sound emissions to the environment of a magnitude which might cause injury to the hearing of the operators, (2) to provide shielding around the major movable components of the machine so as to substantially eliminate potential causes of bodily injury to the operators, and (3) to improve the performance and cooperation of the major components for making concrete blocks. To provide shielding against noise and bodily injury, the frame of the apparatus is constructed in conjunction with sound insulation panels to provide an enclosure around the major movable components of the apparatus, and the frame also supports these components on internal surfaces thereof so as to minimize sound transmission openings to the environment.

Abstract: Apparatus for forming concrete building blocks which is constructed and arranged (1) to minimize sound emissions to the environment of a magnitude which might cause injury to the hearing of the operators, (2) to provide shielding around the major movable components of the machine so as to substantially eliminate potential causes of bodily injury to the operators, and (3) to improve the performance and cooperation of the major components for making concrete blocks. To provide shielding against noise and bodily injury, the frame of the apparatus is constructed in conjunction with sound insulation panels to provide an enclosure around the major movable components of the apparatus, and the frame also supports these components on internal surfaces thereof so as to minimize sound transmission openings to the environment.

Abstract: Apparatus for molding a concrete panel having:A. an articulated concrete-pouring mechanism with pivotally inter-connected horizontal tubes, each containing a motor-driven feed screw;B. a mold frame pivoted on a vertically-fixed, horizontal axis to be turned from an upright position, which it occupies while being filled with wet concrete, to an inverted position;C. a bottom plate and core assembly in the mold frame mounted for limited, vertically guided movement downward in the mold frame when it is turned over;D. and a vertically-displaceable platform below the mold frame for receiving the concrete filling from the mold cavity when the concrete is stripped from the mold due to its own weight and the weight of the bottom plate and core moving down in the inverted mold frame.

Abstract: Concrete structural members are cast in a metal mold form which comprises side members closed off by a horizontally extending resilient pallet. The side members have affixed thereto at their lower ends adjustable swivel arm actuating mechanisms adapted to flex the side members laterally away from one another to enable stripping of the cast member from the form. The resilient pallet forms the bottom surface of the mold form and etablishes a seal to prevent slurry leakage. The pallet is supported by a roller transfer assembly that enables the cast member to be transported to another operating station after the cast member has been stripped from the form. The transfer assembly is adjustable in height by means of a swing arm assembly which in addition to setting the depth of the casting also causes the cast member to be elevated clear of the form to enable it to be removed therefrom.

Abstract: During stripping of a cement block from a mold in a cement block forming machine by shoes of a stripper head, the head is driven by gravity and its distance from a pallet receiver structure, including a pallet receiving the cement block, is limited by hydraulic, collapsible stops. The stops collapse during stripping a distance sufficient to slump the block. The amount of collapse during the stripping time interval is controlled by adjustable hydraulic flow means under constant pressure.

Abstract: A flexible printing plate is separated from the inner surface of a curved matrix after formation of the plate in a mold by first moving the ends of the plate inwardly away from the matrix, while maintaining the center of the plate in stationary contact with the matrix, and then moving the center of the plate inwardly away from the matrix, while maintaining the ends of the plate away from the matrix. The matrix is held in an outer mold half, and the printing plate is formed in a mating inner mold half having a center section wih sloping side surfaces that converge toward the outer mold half, a first end section having a side surface contiguous to one sloping side surface of the center section, and a second end section having a side surface contiguous to the other sloping side surface of the center section.

Abstract: Cup-shaped shells suitable for use as hors d'oeuvres, snacks, and the like are made from leavened dough. The shells are cut from a crust of leavened dough and then shaped by dies and heated to form a concave configuration.

Abstract: This invention relates to a plastic closure or cap-type stopper of which the outer skirt has formed on its inner surface a plurality of ribs adapted to engage the top ring and the grooves of the neck of the container to be stopped, on either side of a partially tearable guaranty strip bounded by circular thinning grooves formed in the inner surface of the skirt.The mold for manufacturing this closure comprises underneath a fixed plate formed with holes for the passage of the ejection ring and ejection shaped sleeve of a sliding plate perforated like the fixed plate and actuated by a pusher, and above a sliding impression plate of which the perforation corresponding to the preceding ones bounds the injection chamber for the closure skirt on the core, said sliding impression plate being actuated by a pusher for releasing the closure from the mold impression at the end of its stroke.