Abstract: A device for automatically receiving sheets in a pile at a delivery station of a sheet processing apparatus and for removing a completed pile of sheets characterized by a first conveyor device for transporting a pallet along a vertical path and including a device for lowering the pallet along the vertical path as the sheets are deposited at the delivery station and received thereon, and a second conveyor device for transporting a pallet in a horizontal path between at least two positions with one of said positions in the path of the first conveyor and the other position removed therefrom. Preferably, the second conveyor extends perpendicular to the path of the first conveyor and has three positions arranged in a row with the middle position being the one position in the path of the vertical path of the first conveyor so that as a pallet is removed from the first conveyor to an unloading position, an empty pallet in a ready position is moved into the path of the first conveyor.

Abstract: An apparatus for crushing cans uses a pair of guide rods having an anvil attached at each end, and a pair of sliding rams sliding on the guide rods. Can support wire members are positioned between each ram and anvil to support a can during crushing. A ram drive cam alternately drives each ram to crush a can against its associated anvil. The single drive cam is connected through reduction gearing to a flywheel which is driven by an electric motor. Each ram has a cam follower and the rams are connected together with springs to maintain the cam followers in continuous contact with the cam. A second embodiment has four rams driven by a single motor and flywheel driving a pair of cams and a can feed mechanism feeds cans in synchronization with the movement of rams.

Abstract: A can crusher having an upstanding stationary platen and an upstanding movable platen, the movable platen being reciprocated with respect to the stationary platen. Both platens are canted with their upper ends closer together than their lower ends so that, when a can is placed in the crusher with the can in contact with the platens, the platens trap and hold the can in the crusher and concentrate the crushing forces over a narrow portion of the can perimeter at the beginning of the crushing of the can resulting in a reduction in the total force required to crush the can.

Abstract: Compacting apparatus comprising a first compacting plate and a second compacting plate arranged for linear, reciprocating movement relative to the first compacting plate. Arranged between the plates in the neighborhood of one of said plates is a free-fall aperture, such that a compacted object is able to fall freely, through gravity, from said apparatus subsequent to completing a compacting stroke.

Abstract: A double-acting compacting apparatus comprises two movable compaction plates and stationary compaction plate arranged between said movable plates. Arranged between respective ones of said movable plates and said stationary plate is a free-fall aperture through which compacted objects can fall under gravity. Means are provided for connecting the movable plates together such that during a compaction stroke utilizing one of said movable plates the other of said movable plates defines with said stationary plate a space for receiving further material to be compacted.

Abstract: A trash compactor is especially designed for industrial and commercial usage. A compacting unit is driven by an electricity-free drive unit for allowing applications in hazardous environments, such as offshore drilling rigs. Specifically, a hydraulic pump is pneumatically driven for powering the compactor. A container used in the compactor is specially designed for facilitating removal of the relatively bulky and heavy compacted trash.

Abstract: A compressor for cans and the like. First and second plates are pivotally secured to each other for movement between open and closed positions, each of said plates including a planar bearing surface defining a compression area. In a preferred embodiment, the plates are non-parallel in the open position and generally parallel in the closed position with the location of the pivot connection being offset from the planes of both bearing surfaces. This offset facilitates ejection of the compressed material while reducing the forces which tend to prematurely eject the material to be compressed.

Abstract: A cyclically operable machine having a work station where a blank is deformed into a work product and in which the work product is ejected on to a conveyor oscillated between that station and another conveyor to which the work product is delivered synchronously.

Abstract: Shredded paper for use as animal bedding material is compacted for packing by a reciprocating hydraulic compacting ram which displaces the material into an ejector chamber in a number of successive storkes. The pressure in the compacting ram is monitored by a pressure switch, and when a threshold pressure corresponding to a desired degree of compaction is reached a limit switch is effectively primed to trip the operation of an ejector ram upon completion of a compaction stroke, to eject the compacted material from the ejector chamber.The production of fertilizer particles is also described in which shredded paper impregnated with manure after use is comminuted and at least partially dried.

Abstract: An apparatus and method for disintegrating a can includes a feeding chute for feeding the cans into a cutter-compactor mechanism in which cutting blades are fixedly positioned on a rotating drum for cutting each can fed into the mechanism and driving the can further into the compacting portion of the drum. The rotating drum compacts the cans against a fixed arcuate surface and drops the cut and compacted can pieces into a receptacle. The rotating drum has annular raised sides for holding the cans therebetween and protruding cleats on its surface for dragging the cam into the compacting portion. The fixed compacting surface is arcuate to gradually compress the can being pulled against it as the space narrows between the surface and the rotating drum. The chute may have a ferrous can detector to eliminate ferrous cans from the unit, and the fixed compacting surface has a slot to allow the blades to pass therethrough as the drum rotates.

Abstract: A manually operated press for crushing aluminum cans in the specific and exact manner of end to end while maintaining their original diameter, having a crushing chamber enclosed on its two sides by parallel walls of a frame, furthermore enclosed by a fixed stationary end, while the opposite end of crushing chamber is enclosed by a manually operated crushing member which is movable within sides of frame toward and away from fixed stationary end of crushing chamber with the bottom of crushing chamber enclosed by a base which crushing member guide slides upon, leaving top of crushing chamber open in which an aluminum can is placed horizontally in crushing chamber with the sides of the aluminum can parallel to the sides of the frame whereby the crushing member by means of mechanical advantage is advanced toward fixed stationary end of the crushing chamber thereby crushing the aluminum can by forcing one end toward its opposite end; while the walls of the crushing chamber, because of their close tolerance to the a

Abstract: A self-propelled module builder comprising a frame in which cotton or other compressible material is deposited. A compacting mechanism is mounted on the open top of the frame to compress the material into a module. The frame has a side frame structure on each side thereof. Each side frame structure includes a walking beam that is pivotally connected centrally between the ends thereof by an hydraulic jack, which is pivotally attached to the adjacent side frame structure. The ends of the walking beam are connected by pins to parallel spindle tubes. Each spindle tube is constrained for vertical sliding movement by an upright guide, which is fixed to the associated side frame structure. Drive wheels are mounted at the lower ends of the spindle tubes through respective spindles. With the frame lowered, a module is made on the ground to be transported to a suitable facility. When the rectangular frame is raised, the module builder is capable of traveling to another location.

Abstract: A compressive chamber of a baling device is open at both ends. Associated with one end is a movable closure member and a ram projects into the chamber from the opposite end. Drive mechanism directly connects the ram and the closure member so that in one direction of drive the closure member is forced into and held in closed position while the ram travels toward it and, in the opposite direction of drive, the ram and closure member are forced apart to unseat the closure member and move it to open position.

Abstract: A machine for the distribution of dough or a similar viscous material, comprising a hopper with an end plane along which a distribution head is driven sealingly, its first position causing an open connection with the outlet of the hopper. The distribution head comprises a movable expeller in a pressure chamber, so interacting during a second position of the distribution head, with a storage chamber, comprising a piston under pressure, that an accurately metered portion of dough is received under pressure in said storage chamber, this portion being expelled when the position of the distribution head changes.

Abstract: Batts are sequentially delivered to a reception station and deposited in columnar order on a platen substantially in one continuous movement in one plane while said platen is advancing from said reception station towards an ejection chamber spaced therefrom in steps commensurate with the delivery rate and thickness of the batts; a preceding batt column previously disposed in the ejection chamber being compressed by the advancing platen and thereafter expelled, while compressed, into a prepared bag.

Abstract: A vertical baler has a generally rectangular compacting chamber defined by vertical wall members extending from a base, and the chamber is closed by pivotal front doors and a vertically retractable safety gate. A vertically movable horizontal platen is suspended within the chamber by a hydraulic cylinder, and batches of scrap material compacted within the chamber are held down by dog members some of which are pivotally supported. A set of flexible bale ejecting members are coupled to the pivotal dog members and bias the dog members inwardly into the chamber when compacting material, and the ejecting members are then coupled to the platen to provide for ejecting a tied bale in response to upward retraction of the platen.

Abstract: Safety apparatus for a bacon press or the like including a transparent safety door movable vertically between a raised retracted position in which a slab of bacon or other work to be pressed may be readily placed in the press and in which a pressed slab of bacon or the like may be removed from the press, and a lowered position in which access to the movable parts of the press is blocked. Movement of the safety door from its raised to its lowered position initiates operation of the press. Partial opening of the door during operation of the press immediately stops the press. The door is automatically raised at the end of an operating cycle of the press. The safety apparatus also includes the provision of safety screens which may be readily raised and locked in their raised position to permit access to the press and which may be readily lowered.

Abstract: Compression apparatus including a press framework defining a compression region for housing material such as straw to be compressed, one or more compression elements such as two opposed arrays of compression teeth for compressing material by movement along the compression region, and a drive mechanism for moving the compression teeth in a cycle of movement. The cycle includes the compression teeth entering into the compression region, moving along the compression region along a substantially rectilinear path to compress material in the compression region, and returning to the position occupied at the beginning of the cycle, the compression teeth being at least partially removed from the compression region during the return movement.

Abstract: An article crusher comprised of a base plate support having an upstanding member supporting a pivoted lever with a platen carried thereon adapted to be moved within a cylinder mounted on the support plate to crush an article or the like positioned therein, with said cylinder being shaped to facilitate the insertion and removal of the article.

Abstract: A container in which trash may be stored until such time as the container can be dumped into a truck for transportation to a sanitary disposal site. Trash may be inserted and compacted within the container by a compactor unit formed integrally with or fixedly attached to the container. The compactor unit includes a hopper into which trash may be dumped. A packing panel may be pivotally mounted to move through the hopper to push the trash into the container and compact it therein. The packing panel may move from a position in which the hopper is fully opened to a position in which the panel serves as a door to close the hopper and prevent access to the hopper. The panel can be moved from the "door" position to a third position approximately 180.degree. from the fully opened position. In the third position, the panel has moved all of the trash out of the hopper and into the container.

Abstract: A lid unit for a refuse compactor which includes a bin having a power-actuated compacting blade therein; the lid unit comprising a flat, dual-section lid supported on the bin in normally closing relation thereto, the lid embodying a front section and a rear section transversely hinged together at adjacent edges, the lid being longitudinally shiftable a limited distance on the bin to different selective positions, and instrumentalities provided between the lid and the bin arranged to prevent opening of either of the lid sections when the lid is in one position, to permit the front lid section only to be opened when the lid is in a second position, and to permit the rear lid section to be folded onto the front lid section and the folded-together sections then swung to depend in front of the bin when the lid is in a third position.

Abstract: Apparatus for increasing the densichamber driven by a compression ram having a preset stroke and preferably being hydraulic, and a movable backplate facing the piston and being provided with means for producing a reaction force in opposition to the compression force of the ram and less than the maximum compression force exertable by the ram. Means for binding the compressed bales is also provided. Preferably the reaction force is maintained constant regardless of displacement of the backplate and this can be achieved by using a second hydraulic ram to which fluid is supplied at a constant pressure.

Abstract: A compactor-strapper comprising spaced forward and rearward fixed jaws, forward and rearward moveable jaws, hingedly attached independent actuators for said forward and rearward jaws, said jaws having removeable and replaceable insert members providing cavities forming a work reception chamber, and a strapping machine having a strap applying portion arranged around a strapping space defined by said cavities and between said forward and rearward jaws, and pneumatic circuitry with automatic cycling, controlling said jaws, said strapper, and a bundle ejector, resultant from a single manual control motion.

Abstract: A baler for car bodies using a simultaneous compression and cutting of the car body to produce in a working chamber of the baler a partly compressed bale which is then reduced to final dimensions in the working chamber by further compression stages.

Abstract: Disclosed is a compactor which may be utilized to compact waste material including small wood or bark pieces and chips, paper, and paper cartons and form the material into a useful form such as fireplace logs. The device employs a cylinder which is removable from a base, and a piston, the rod of which extends through a head removable from the top of the cylinder for loading. Special bail port construction provides for setting a baling wire in place in the cylinder, holding it in place during loading and compression, securing the compression material in its compacted condition with the bail, and removing the formed and secured product from the compactor.

Abstract: A horizontal piston-type compactor is mounted in a housing, having an open end, that is diagonally joinable to a trash container, also having an open end, the open ends coinciding in horizontal alignment to form the unit. A trash receiving port, surrounded by a combing, is defined in the top of the housing and overhangs the bottom of the trash container owing to diagonal joint between the housing and the container, to provide an interior spillage area and use of higher trash compacting pressure in the container. Side liners are pivoted to the respective sides of the container adjacent its open end and extend oppositely therefrom short of an opposite closed end thereof.

Abstract: A portable bale press for tobacco and the like. The press includes a wheeled support and a compression chamber on a pivotable frame on the support. A press head attached to the rod of a hydraulic cylinder is also on the frame and is movable into the compression chamber to form a compressed mass of tobacco in the compression chamber. Power is supplied for driving the press head. The pivotable frame which supports the compression chamber, hydraulic cylinder and press head and is shiftable between an inactive position for transportation of the bale press and an active position where the compression chamber of the press is in position for compression of tobacco. Releasable holding and shifting structure is provided for transferring the frame between positions and holding the frame in the active and inactive positions for tobacco compression and transportation of the bale press respectively.

Abstract: An assembly for cleaning and packing tobacco leaves after curing. The cured tobacco leaves are conveyed to a rotating drum of wire construction to allow sand and dirt to be removed from the tobacco leaves while being tumbled. The cleaned tobacco leaves are then deposited within a sheeting ring which is positioned on a tobacco sheet. A power operated compression member engages the tobacco leaves within the ring to compress the same. Locking elements are provided for selectively engaging the sheeting ring with the compression member for removing the same as a unit from the tobacco, following which the ends of the tobacco sheet are tied together.

Abstract: A baling press has opposed boxes with a tramper movable along the lint feed box for pre-packing fibrous material fed thereinto. The press box opposed to the feed box has a ram follow block against which the fibrous material is pre-packed, and which moves incrementally away from the lint box as the prepacked fiber mass accumulates. The tramper is reciprocable at a uniform stroke and has a pronged tramper head thereon for restraining the pre-packed bale in the press box as a slotted gate is closed prior to a final compression of the bale. Prepacking in the lint box may then continue for another batch during the final bale compression.

Abstract: Apparatus for filling containers with refuse which has been compacted by pressing comprises a weighing device for weighing refuse collecting vehicles, a plurality of holders each capable of holding and discharging a batch of refuse from one vehicle, a refuse press including a filling shaft and two conveyor belts, which are preferably arranged one on each of two opposite sides of the filling shaft, for conveying batches of refuse discharged from the holders, which are arranged in a row, to the filling shaft of the press. The apparatus enables batches of refuse of different weights from each other to be selected from a larger number of batches to provide optimum filling of the container with the weight of the contents of the container closely approximating a predetermined weight.

Abstract: A conveyor carries cans or other refuse from a source of cans to a jaw crusher. The conveyor is adapted to drop cans generally one at a time into a bin, and the bin has an opening to release each can when the jaws open to receive it. In the open position, the jaws are spread far enough apart so that the can drops to the bottom thereof. A flap is provided at the bottom to hold the can between the jaws. The end of the flap extends to a position above the bottom of the stationary jaw. As the jaws come together in crushing, the moving jaw cams the flap downward along the stationary jaw. However, the flap is not cammed entirely out of the area beneath the jaw until the jaws have come together to hold the can. The flap ensures that no lip is formed on the can. After the jaws close, the flap is moved out from beneath the jaws so that when the jaws open, the crushed object can fall out of the jaws for carrying away.

Abstract: A refuse compactor having a receptacle for holding the refuse during compacting in which the container is distortable and includes a pressure deformable section on at least one side normally bulging out of alignment with the adjacent area of the receptacle under conditions of substantially no pressure and a pressure member on the compactor for retaining said section deformed in substantial alignment with the side of the container during the compacting. This pressure deformable section facilitates removal of the filled container after compressing the refuse from the compactor and also facilitates removal of the compacted refuse from the container.

Abstract: A fish-canning machine having two adjacent parallel rotary turrets each having a fish-receiving pocket in the periphery thereof. The turrets are positioned to align the pockets with each other to form a single combined pocket which is then filled with fish from a corresponding large size feed chute of increasing cross-sectional area. The fish in the pockets is severed between the turrets and the turrets are rotated by different amounts to move the filled pockets laterally out of alignment with each other. The fish in both filled pockets is formed into the shape of a can and ejected endwise from the pockets into two separate cans.

Abstract: Disclosed is a method of packaging asbestos fibers wherein damp asbestos fibers are consolidated into blocks having a density of at least about 100 lbs./cu. ft. (PCF). These blocks can then be stacked on pallets, pulpable pallets if desired, and secured to said pallet with various means, for example with a shrink film, to produce a clean, compact package. At the point of use, the blocks are disintegrated using a block-breaker and the resultant pieces are then opened into a loose mass of asbestos fibers in a conventional opening apparatus.

Abstract: A can compactor comprising a frame, a generally vertical anvil mounted in the frame, and a ram movable horizontally toward and away from said anvil. A guide is provided for guiding the cans for rolling movement toward the anvil. A stop is provided for a row of cans rolling toward the ram. Upon retraction of the ram a can is forced over the stop into the space between the anvil and the ram where it is retained between the anvil and the ram to permit the ram to be moved and thereby compact the can.

Abstract: Coking coal is pounded into a compacted cake of substantially uniform density in a pounding box by means of a plurality of punners mounted on carriages which can move to-and-fro lengthwise of the box. The punners are alternately raised and then allowed to drop under the influence of gravity onto the coal in the box. The raising and dropping is so timed that at any time preferably the foot of only one punner per carriage is in contact with the coal in the box, so as to leave as much as possible of the coal surface area exposed.

Abstract: A machine feeds material such as shredded or ground paper, cellulose fiber, peat moss, or the like, into a vertical chamber having a ram forcing the material into a communicating chamber adapted to retain a bag over an open end thereof and having a ram or pressure plate moveable longitudinally thereof for compressing the material in the chamber. The rams are perforated, with the rear thereof being evacuated to dispose of dust or the like, and a piston operated back-up plate is mounted on a track for controlled movement relative to the open ended chamber for holding a bag end during compression of material and removal of loaded bags.

Abstract: A compactor for metal cans, particularly beverage cans, which consists of a housing and a lid containing therein a primary chamber cavity terminating at one end in transversely extending cavity extension. With the can in position in the chamber a motorized longitudinal ram crushes the can in a longitudinal direction into the shape of a disc whereupon a cross ram operating in the cavity extension transversely crushes the disc into a pellet. In operation of the device the power driven longitudinal ram compresses the can to a predetermined point whereupon the power driven cross ram automatically starts and the longitudinal ram automatically stops. When maximum compaction has been obtained both rams automatically withdraw to their original position and the pellet falls through an opening in the floor of the cavity extension.

Abstract: A press for compacting scrap metal for subsequent melting, e.g. in an electric furnace, the press comprising a supporting bed, a chamber formed in the bed and open at the top for the introduction of scraps thereinto, a closing cover for the chamber lockable in a closed portion by locking means. Movable and stationary walls define the sides of the chamber and are associated with the bed. Control and guide means for the shifting movement of the movable walls are adapted to bring the movable walls close to each other until there is defined therebetween a cavity. The distances between the walls are smaller than and proximate the distance between the inner walls of the furnace whereinto the compacted scraps are to be molten. A ram with related control means defines with its active face the base of the cavity and is movable in the bed to and away from the cover in order to press, against the cover, the scraps already compacted in the cavity.

Abstract: A baling machine for particulate material such as wood chips and bark includes a vertically elongated compression chamber provided at its upper end with an inclined inlet feed chute, a downwardly facing vertically movable compression ram in the chamber, an upwardly facing vertically movable gate ram forming the lower end of the chamber during compression, and a bale-strapping assembly associated with the lower end portion of the chamber. A horizontally movable door operating between open and closed positions at the inner end of the feed chute forms part of the wall of the chamber when closed. The leading edge of the door is specially shaped to penetrate the material in the chute and to cooperate with anvil surfaces at the end of its travel to prevent jamming of the door as it closes.

Abstract: Disposal installation for domestic waste, to be used e.g. in or near kitchens of houses, hotels and the like, whereby the installation comprises a common holder, in which four separate and separated chutes are accommodated, which are meant for the disposal of respectively tins, glass, synthetic material and food remains, and whereby in each chute waste processing devices are accomodated, which reduce and process the waste meant for the chute.

Abstract: An automatic laminating machine is provided for use with pre-fabricated laminating packets having a tear-off tab with a plurality of notches thereon. The machine is substantially automatic in its operation and can be easily operated by an inexperienced operator. The machine requires no warm-up time and heats up in only 10 seconds each time a packet is inserted. The machine will not operate unless it is used with a laminating packet with a pull tab of proper configuration which not only energizes the machine but also aligns the packet within the machine.

Abstract: The present invention relates to an improved machine for shearing and compressing scrap metals, in particular, a large scrap metals, such as an automobile. The machine includes a carriage defined by a pair of spaced apart plates, a rigid base disposed between said spaced apart plates to define a U-shaped cross-section, an arm member having a drive motor operatively connected thereto and a supply table having a drive motor operatively connected thereto. A pivot is provided for pivotally mounting the arm member between the pair of spaced apart plates whereby the arm member pivots toward and away from the base. Another pivot is provided for pivotally mounting the supply table at the end of the carriage whereby the supply table rises in order to supply the scrap metals placed thereon onto the base. The supply table is further provided with a put-out table for serving to exhaust the compact block of scrap metals from the machine with the action of the supply table.

Abstract: Apparatus for crushing containers, such as beverage cans, in a crushing zone between a movable ram and a relatively stationary platen, and for delivering the crushed containers to given receptacles according to the material of the containers. Control means for power operated means, such as a container counting device, includes a pair of movable container engaging probe members that are adapted to engage opposite ends of a container in a testing zone through which the container passes during movement to the crushing zone, the probe members comprising portions of an electric circuit also including a selector switch having a movable switch element. The extent of movement of the movable switch element is governed by the extent of movement of the probe members toward and away from engagement with a container. Power operated mechanism imparts movements to the ram, probe members, and a container feeding device.

Abstract: Process for dewatering thickened sludge comprising the steps of depositing thickened sludge onto a porous support, partially dewatering the thickened sludge by establishing a vacuum within said porous support, compressing the partially dewatered sludge on said porous support at a pressure of from 1 to 10 kp/cm.sup.2 to further dewater the sludge and to form a sludge cake, compressing the sludge cake on the porous support at a pressure of from 10 to 300 kp/cm.sup.2 to further dewater the sludge cake and discharging the dewatered sludge cake from the porous support.

Abstract: A scrap compactor has a generally parallelepipedal elongated chamber. The top wall of the chamber may be pivoted down to partially crush the scrap, and a lower portion of one of the side walls of the chamber may be pivoted inward to similarly precompress the scrap. After swinging-in of the lower portion of the one wall this wall is swung outwardly and the opposite wall is moved in while remaining parallel to the other wall. Thereafter the fully compacted scrap may be pushed out an outlet hole in one end of the press.

Abstract: Apparatus for fabricating flat floor trusses or other wood structures, the apparatus including a number of wood member support frames securable together in end-to-end abutting relation with each of the frames having a tongue at one end thereof and a groove at the other end thereof whereby the groove of one of the frames receives the tongue of another of the frames to facilitate rapid set-up of the frames with the frames in proper alignment with one another. Lumber stops are provided on support frames for accurately positioning the chord members of the truss and for preventing outward movement thereof, but yet permitting a completed truss to be readily lifted from the support frames without unclamping or releasing the stops and without undue friction from the stops. The support frames further include a plurality of wood member support platforms adjustably movable along the length of the support or readily removable therefrom so as to support the wood members at the joints of the truss being formed.

Abstract: A baling press, having a cavity and a bolster for reciprocating in the cavity, uses replaceable cavity liners and bolster wear strips. These liners and wear strips can be replaced without disassembling the press by withdrawing the bolster from the cavity. Also disclosed is the use of a number of high volume pumps which are switched out of the hydraulic supply circuit as the bolster nears the end of its compression stroke so as to allow the use of relatively low power prime movers.

Abstract: Apparatus is provided for bailing compressible material between a pair of bale boards. The material is supplied to a retractable chamber and onto a bale board positioned at the bottom of the chamber when the chamber is in the down position. A ram is movable within the chamber to compress the material onto the board. Following partial withdrawal of the ram to permit a bale board to be inserted within the chamber, the ram descends to form the bale to its final dimensions. Upon retraction of the chamber, an ejector moves laterally to the direction of ram movement to displace the bale to a station where straps are secured about the bale. The ram returns to its up position and after return of the ejector to its original position, the chamber is moved to its down position in readiness for the fabrication of the next bale.

Abstract: A hydraulically actuated ejector mechanism is mounted on a press bed and includes a pair of opposed cams connected to the press slide for vertical displacement therewith. The cams actuate corresponding followers in the form of hydraulic pistons which operate together to hydraulically displace an ejector member during upward movement of the slide following a metalworking operation. The cam contours enable timing the ejector pin displacement with the press slide stroke so as to achieve optimum acceleration and deceleration of the stroke of the ejector pin.