Abstract: A method and an apparatus for forming circumferentially extending necked and flanged parts at an end of a bilaterally open hollow cylindrical body. First and second axially aligned shafts carry axially displaceable first and second inner tools, respectively. Each inner tool has a circumferential body-shaping and a circumferential body-supporting surface. In a first axial position of the two inner tools the shaping surfaces together define a circumferential shaping groove situated inside the hollow body, and the body-supporting surfaces support the hollow body. In a second axial position the two inner tools are at a greater axial distance from one another than in the first position to allow introduction of a hollow body therebetween. A third shaft, carrying an outer tool having a circumferential shaping surface, extends parallel to the first and second shafts.

Abstract: An roller-flanging device for flanging at least an end region of a cylindrical body includes a receptacle having a longitudinal axis common with the cylindrical body being flanged. Flange rollers are rotatably seated in the receptacle about the common longitudinal axis, and roll along a surface of the cylindrical body. The flange rollers each have a part with a cylindrical surface and a flange collar for forming a flange contour on the cylindrical body. At least one limiting body is disposed between contiguous ones of the flange rollers, and extends inwardly toward the common longitudinal axis beyond the circumscribed cylindrical surface of the cylindrical parts of the flange rollers at least when forming the flange. The at least one limiting body prevents burrs or material from the cylindrical body from reaching or extending beyond the cylindrical surface of the flange rollers, and assures a uniform flange diameter.

Abstract: Two cooperating spiral conveyors are provided between a transport device having a transport plane and a transport segment. The conveyors are driven in opposite directions and are provided with opposite thread directions. The axes of the spiral conveyors are disposed at the height of the transport plane. The pitch and the thread clearance of peripheral recesses of the spiral conveyors decrease continuously from the transport device to the transport segment. A support surface for a lid is disposed between the two spiral conveyors. At the end contiguous to the transport device, the support surface has the same height as the transport plane, and at the end contiguous to the transport segment, its height is lower by half of the lid diameter.

Abstract: An apparatus for serially conveying receptacle lids includes two lid-advancing wheels each having a plurality of circumferentially spaced peripheral pockets for receiving individual lids. The wheels peripherally adjoin one another in a border zone for transferring the lids from one wheel to the other. The apparatus further has a supporting surface situated underneath the wheels for supporting the lids as the lids are advanced by the wheels. An annular guide surrounds the wheels externally of the border zone for retaining the lids in the wheel pockets. A pin is mounted on at least one of the wheels at one of the pockets thereof; the pin is held displaceably relative to the wheel carrying the pin. Further, the pin has an upper position for engaging a radially inner part of a shoulder of the lid to retain the lid in the pocket adjoining pin. Further, the pin has a lower position for releasing the lid shoulder to allow a displacement of the lid relative to the pocket.

Abstract: A method for dry fractionation of a mixture of meltable, higher molecular weight organic substances, including: melting a mixture of organic substances which is meltable and which has a higher molecular weight by heating the mixture to a temperature effective to provide a melt, the melt having an interior temperature; pre-cooling the melt with a cooling means including a coolant to one of (1) cool the melt without nucleation of crystallization and (2) cool the melt and nucleate crystallization at a nucleation temperature; and growing crystals under conditions effective to one of (1) nucleate crystallization at the nucleation temperature and ripen the crystals, and (2) ripen crystals nucleated in step (b), wherein pre-cooling, nucleating and crystal ripening each include a thermal treatment, wherein, during precooling, temperature reduction is effected at any desired rate but under the conditions that the coolant has a temperature which is not more than 10.degree. C.

Abstract: A drive arrangement for a machine for the application of sealant to lids includes a turret head rotatable about a vertical axis. A main drive motor is coupled for driving the turret head for rotation about the vertical axis. A ring of teeth is mounted for rotation about the vertical axis and relative to the turret head. A plurality of sleeve shafts carries plates for the accommodation of lids. The sleeve shafts are mounted for rotation about axes that are parallel to the vertical axis. Each sleeve shaft includes a pinion that is in engagement with the ring of teeth. An auxiliary drive motor is provided which is independent of the main drive motor. The auxiliary drive motor is connected with the ring of teeth for driving the pinions by way of the ring of teeth at a rate of rotation independent of the rate of rotation of the turret head caused by the main drive motor.

Abstract: A pressing roll for a tire building machine includes a shaft having a longitudinal axis; a plurality of discs inserted on the shaft in an axial series; a mounting arrangement for providing for an individual, radial displaceability of each disc relative to the longitudinal axis; and a force-exerting power arrangement for displacing the discs relative to the shaft.

Abstract: A method of crushing material between cooperating jaws of a crushing jaw assembly of a demolition tool includes the steps of applying a closing force to at least one of the jaws for urging the jaws toward one another; and imparting a vibratory motion to at least one of the jaws while the closing force is applied.

Abstract: A drilling apparatus includes a drill rod unit having at least one drill rod; a percussion mechanism having a housing; a percussion piston having an axis and being slidably received in the housing; and a hydraulic system for generating pressures in the housing for effecting an axial reciprocation of the percussion piston in the housing for delivering blows to the drill rod unit in a direction parallel to a direction of reciprocation. The housing has opposite, axially aligned open ends and the percussion piston has a throughgoing axial passage in alignment with the open ends of the housing. The drill rod unit extends into the axial passage and has a counterface situated in a path of travel of the percussion piston for being impacted by an end thereof. The percussion mechanism is receivable on the drill rod unit at either selected side of the counterface for delivering blows to the drill rod unit in a selected one of two opposite directions.

Abstract: A roller knife cutter includes a first knife shaft pair for severing a ferromagnetic metal sheet into sheet metal strips forwarded in a first direction of advance; and a plurality of substantially coplanar plates arranged downstream of the first knife shaft pair in a series in the first direction of advance. The plates are separated from one another by a clearance. The cutter further has an endless belt having an upper run moving in a second direction of advance and positioned in the clearance and extending parallel therewith. The upper run has a lowered position in which a top surface of the upper run is at a level below the top surfaces of the plates and a lifted position in which the top surface of the upper run is substantially coplanar with the top surfaces of the plates; and a plurality of individually height-adjustable magnet units arranged in a series underneath the upper run parallel to the second direction of advance.

Abstract: A demolition tool includes a carrier body and two tool blades mounted thereon to define a tool mouth for receiving material to be crushed. The demolition tool further has a hydraulic cylinder including a cylinder housing as well as first and second chambers defined therein. A piston rod is received in the cylinder housing and projects therefrom for moving at least one of the blades. First and second pistons are spacedly affixed to the piston rod and bound the first and second chambers, respectively. Hydraulic fluid is introducible into the first and second chambers for exposing the pistons to pressure to generate a force for moving the piston rod in a working direction. A control unit is operatively connected to the chambers for controlling admission of hydraulic fluid thereto. The control unit has a first position in which the control unit admits hydraulic fluid solely to the second chamber and a second position in which the control unit admits hydraulic fluid under pressure to the first chamber.

Abstract: A control system for a hydraulic percussion mechanism (6) is based on the continuous measurement of the striking rate (z) of the striking piston, or on the continuous measurement of the striking rate (z) of the striking piston together with the quantity per unit time (Q.sub.e) of the hydraulic driving medium coming into the percussion mechanism (6). One, or possibly both, of these parameters is measured from outside the percussion mechanism itself. The control system is configured in such a way that the internal resistance of the percussion mechanism or the hydraulic pump which powers it is increased if there is an increase in the striking rate (z) or the ratio z/Q of the striking rate to the incoming stream rate beyond respective limit values.

Abstract: A measuring device connectable to a pressure conduit of a hydraulic circuit for determining characteristic operational parameters of hydraulic energy converters forming components of the hydraulic circuit includes a measuring section having a conduit guiding pressurized fluid of the pressure conduit and a throttle in the conduit for effecting a pressure drop thereacross; a differential pressure transducer communicating with the conduit at an upstream side and a downstream side of the throttle as viewed in a direction of fluid flow for determining a pressure differential across the throttle and for generating an output signal representing the pressure differential; and an electrotransducer connected to an output of the differential pressure transducer for separating the output signal into an alternating voltage component signal and a direct voltage component signal. The electrotransducer has an output to which the alternating voltage component signal and the direct voltage component signal are applied.

Abstract: A hydraulically operated striking mechanism includes a contact pressure control member held at least temporarily in contact with an insertion end of a drilling tool by a mechanism which applies a restoring force in the striking direction. A control conduit is connected by way of the contact pressure control member either to a pressure conduit or to a pressure return conduit. The control conduit actuates a switching element so that a control unit which alternatingly switches the movement of the striking piston performs a reversal movement into an operating stroke position at an earlier or later point in time during the return stroke of the striking piston and thus actuates the operating stroke of the striking piston in the striking direction.

Abstract: A bladderless tire-curing press has upper and lower pressing disks cooperating with upper and lower bead rings. The pressing disks have circumferentially continuous outer surfaces engaging the beads and bounded inwardly by axial projections with conical centering surfaces which engage in recesses in the bead rings. The bead rings have projections engaging in grooves between the projections of the disks.

Abstract: An automatic lubricating arrangement for a chisel of a hydraulic striking mechanism. A conveying unit is adapted for connection to the chisel guide supporting the chisel of the striking mechanism for charging the chisel guide with lubricating grease and is further connected to the source of operating pressure for the striking mechanism. The conveying unit includes a conveying chamber for receiving lubricating grease and a mechanism for performing a predetermined conveying stroke of adjustable magnitude each time the striking mechanism is charged with operating pressure for forcing lubricating grease out of the chamber and into the chisel guide under pressure derived from the source of operating pressure. A lubricant reservoir for storing lubricating grease is connected to the conveying unit and has a movable separating element and compression spring biasing the separating element against the lubricating grease for supplying lubricating grease to the conveying chamber of the conveying unit.

Abstract: An apparatus for use in a compression molding machine to secure the position of a mass of hardenable plastic compound from which a compression molded object can be produced by upper and lower mold halves which are driven so as to be movable relative to one another. In order to prevent undesirable displacement of the plastic compound mass during closing of the mold, the apparatus includes holding pins at the lower mold half. The holding pins project beyond the mold surface of the lower mold half during charging and also during part of the compression molding process. The height of the holding pins relative to the mold surface is dimensioned to be less than the thickness of the plastic compound mass in the region of the pins.

Abstract: In order to ensure that the pressing force exerted during the production of molded objects acts exclusively on the molding compound (34), and is not absorbed by the lands (1a, 2a) the mold halves (1, 2), a distance determining apparatus employs a nozzle (3) bored into one of the lands. The mouth of the nozzle faces the land of the other mold half. The nozzle is connected by way of a hose (5) with a pressure source (9) for a compressible flow medium, such as compressed air. The hose serves as a reservoir for the flow medium. After attaining a starting state in which a predetermined overpressure is applied to the reservoir, the pressure source is switched off by a valve (7), and the time needed for the pressure in the reservoir to drop to a predetermined lower value is measured. This time period constitutes a measure of the distance (x) between the two lands (1a, 2a) of the mold halves.

Abstract: The present invention relates to a gripping apparatus for carrying along a adhesive panel of material and includes a carriage which is movably guided in the longitudinal direction of the panel and a holding tong disposed on the carriage with its long arms being configured to be adhesion reducing on their interior sides. To improve the economy and operational reliability of the gripping apparatus, it is proposed to equip the interior sides of the tong arms with a continuous adhesion reducing sheet which is pre-tensioned by means of a tensioning frame and to make the adhesion reducing sheet movable with a carriage. Displacement of the holding tongs, which is caused by the movement of the carriage results in a movement of the adhesion reducing sheet in the direction toward the front sections of the tong arms at the same velocity in opposite directions.