Abstract: A high-pressure delivery pump is provided which includes a high-pressure cylinder and a plunger displaceable within the high-pressure cylinder. The high-pressure delivery pump also includes an eccentric pin which is arranged on a drive shaft having an axis of rotation perpendicular to a central longitudinal axis of the plunger. The plunger has a disk-shaped widened portion at a first end thereof. The disk-shaped widened portion extends radially outwardly from the high-pressure cylinder. A rolling ring in rotatably mounted on the drive shaft and an outer circumference of the rolling ring faces the widened portion of the plunger. The widened portion of the plunger bears against the outer circumference of the rolling ring to form a contact area. The rolling ring has at least one recess or relieved portion at its outer circumference.

Abstract: A housing (7") of the displacement machine for compressible media includes an end wall (28). Placed onto the housing (7") in the axial direction is a hood (50), which, together with the end wall (28), bounds a space (51). The two inlets (12, 12'), which are located on the outside in the radial direction, are connected to each other by this space. For its part, the hood (50) has a nozzle-like connection (52), via which the displacement machine can be connected to an upstream air filter. The displacement machine needs little space, as viewed in the radial direction.

Abstract: A displacement machine for compressible media includes a displacer (1) which is arranged in a stationary housing. When the machine is operating, the displacer executes a circulating but non-rotating movement. Spiral bars (3, 3') are arranged perpendicularly on the disk (2). The bars (3, 3') have outer sealing faces (30, 30') and inner sealing faces (31, 31'). The beginning (32) of the outer sealing faces (30, 30') is offset with respect to the beginning (33) of the inner scaling faces (31, 31'), as viewed in the circumferential direction. This is correspondingly true of the end (34, 35) of the sealing faces. The bars (3, 3') engage in spiral delivery spaces in the housing and, when the machine is operating, the sealing faces (30, 30', 31, 31'), together with the cylindrical walls of the delivery spaces, form working chambers in a uniform rotational angle interval of the drive.

Abstract: A feed device for a packaging machine having two conveying elements that circulate adjacent to one another at least along an operating path between a loading station and an unloading station. The conveying elements are driven by separate drive motors each connected to a respective rotation angle sensor. The motors and sensors are connected to a control device. Each conveying element has a plurality of pushers spaced with a uniform, settable interval, the plurality of pushers extending over only a portion of the length of the respective conveying element and including a front pusher and back pusher. The control device control the device motors in such a manner that the front pusher of the one conveying element, in the region of the loading station, follows the back pusher of other conveying element with a spacing corresponding to the interval.

Abstract: The method proposed calls for a crush blade (9), which separates cross-sealed plastic bags from each other, to be built into a cross-sealing jaw. The crush blade (9) has a zig-zag crush edge (16) made up of V-shaped grooves (17,18) laterally staggered with respect to each other. Joining with the angles (26,27) of the crush edge (16) are sharp cutting edges (24,25) which run in the direction of rotation (19) of the blade (9). The cutting edges (24,25) make an angle with the plane (23) of the crush edge (16). This ensures a long life of the blade (9) and makes it easy for the consumer to tear open the bags.

Abstract: An arrangement for an endless belt includes an endless belt having an inside adapted to be driven by a transport wheel and an outside. Elastic fingers are attached to the outside of the endless belt. The elastic fingers are substantially evenly spaced from one another. Each elastic finger has a free end and another end that constitutes a fastening point to the endless belt. Each elastic finger has a curved shape between the free end and the fastening point and presents a clamping region between the free end and the fastening point.

Abstract: Two holders (27-30) arranged on both sides of the mid-plane (4) of a conveyed tubular bag (1) are rotated in parallel directions by crank mechanisms (15-18). A sealing jaw (37) or matching jaw (38) is vertically guided in the holders (27-30) and prestressed by a spring (41) against a stop (44). Stopping rollers (62) project sideways from the jaws (37, 38) and bump against supporting strips (48, 49) before the jaws (37, 38) touch each other. The supporting strips (48, 49) are moved against each other by a controller (54) in such a way that the vertical components of motion of the jaws are delayed in a controlled manner. On the contrary, before the jaws (37, 38) are moved away from each other, they are accelerated up to the required vertical speed to bump softly against the stop (44). This device works without noise, is gentle to the material and may be adapted to various working conditions.

Abstract: An apparatus for conveying, grouping and storing flat articles includes a storing device which has a plurality of gondolas each having a plurality of vertically spaced, generally horizontally oriented, superposed storing shelves; a gondola support and conveying mechanism for carrying the gondolas and moving them in a predetermined travelling path; an input station situated along the travelling path for presenting the gondolas in succession to receive articles; and an output station situated along the travelling path for presenting the gondolas in succession to discharge articles. There are further provided a conveyor situated at the input station for advancing articles thereto and for placing articles on the storing shelves of the gondola dwelling in the input station; and a grouping device for removing articles from the superposed storing shelves of the gondola dwelling in the output station and for forming article stacks of the removed articles.

Abstract: A screw connection includes a first component having an outer surface and a countersunk bore extending from the surface and having a cylindrical portion adjoining the outer surface of the first component. There is further provided a second component adjoining the first component. A screw passes through the countersunk bore and extends into the second component for joining together the first and second components. The screw includes a screw head having an end face which is recessed relative to the outer surface. A disk is press-fitted into the cylindrical portion of the countersunk bore. The disk has a surface oriented toward the end face of the screw head. The disk surface has a center part which is in direct or indirect contact with the end face of the screw head. A circumferential marginal part of the disk is at a clearance from the end face of the screw head whereby an externally applied pressing force on the disk at a disk location spaced from the center part causes a rocking motion of the disk.

Abstract: A cutting apparatus for separating a series of an indeterminate number of end-to-end connected bag packages into groups of a predetermined number of end-to-end connected bag packages includes a first rotary member including a knife; a second rotary member including a countersupport having an outer surface contacting the knife upon each revolution thereof, whereby a transverse seam connecting two adjoining bag packages and momentarily situated between the knife edge and the outer surface is cut. The outer surface is provided with a depression. The apparatus further has a shifting mechanism for shifting the rotary knife and the countersupport relative to one another into first and second positions. In the first position the knife passes across the depression for leaving a length portion of the knife out of contact with the outer surface, whereby the transverse seam remains uncut along the length portion to preserve a connecting web between the two adjoining bag packages.

Abstract: An apparatus for separating, conveying and grouping flat items includes a supply chute for advancing the items in a face-to-face orientation in a series of indeterminate length; a conveying track adjoining the supply chute for receiving items therefrom; a grouping device disposed on the conveying track for forming a group of vertically stacked items of predetermined number; and a conveyor for advancing the items on the conveying track. The conveyor has sequentially spaced item pushers each advancing the items to the grouping device from the supply chute. Some of the item pushers are placed in an inoperative state at the grouping device to allow items to remain therein and be stacked to attain an item group having the predetermined number of items.

Abstract: An apparatus for forming a plurality of output rows from a single input row of articles has a conveyor advancing articles in a row parallel to the conveying direction; a deflecting device including an endless deflecting belt trained about two end rollers and having, when in a working position, an operative length portion forming an acute angle with the conveying direction. The deflecting member includes a first length portion provided with a bounding edge extending generally parallel to the conveyor surface and being at a clearance therefrom which is less than an expected minimum height of the articles positioned on the conveyor. The deflecting member further has a second length portion provided with a bounding edge extending generally parallel to the conveyor surface and being at a clearance therefrom which is greater than an expected maximum height of the articles positioned on the conveyor.

Abstract: The invention concerns a rock drill (2) for activating a rotatable and reciprocable drill steel assembly (FIG. 1 ). A reversible motor (50) is coupled to a striking bar (3) for rotating the drill steel. The striking bar is struck by a percussion piston (10). A rotary fluid valve (15) is operating the piston. A disconnectable coupling (37,38,43) in normal operation couples both the valve (15) and the striking bar (3) with the motor (50). In special modes the motor operates only the percussion piston, e.g. for retracting a drill rod, or only rotates the striking bar (3), e.g. for connecting and disconnecting drill rods.

Abstract: An apparatus for separating and sequentially conveying articles from an article stack includes an article accumulator in which the article stack is formed, a wheel, and a plurality of article pushers mounted on the wheel. Each article pusher has an article pushing face for pushing the article out of the article accumulator and is movable relative to the wheel into a first and a second position. In the first position the article pushing face is sufficiently close to the accumulator to abut and carry an article as the pusher passes by the accumulator and in the second position the article pushing face is sufficiently remote from the accumulator to move past the stack without abutting an article as the article pusher passes by the accumulator. Further, a control device moves selected article pushers into the second position prior to reaching the accumulator. A device resets the article pushers into the first position after having passed the accumulator.

Abstract: A method of making a packaging bag from a wrapper sheet includes the following steps: forming a continuous sleeve from the wrapper sheet; forming a longitudinal seal inward of and adjacent to a longitudinal folded edge of the wrapper sheet by bonding overlapping longitudinal edge portions of the sleeve to one another; forming a transverse seal bonding overlapping sheet portions to one another; cutting a tear-open slit through at least three layers of the wrapper sheet in the transverse seal in an area of intersection with the longitudinal seal; transversely severing the sleeve to provide a packaging bag having an open end spaced from the transverse seal; charging the packaging bag with goods through the open end; and forming an additional transverse seal bonding overlapping sheet portions to one another for closing the open end.

Abstract: An apparatus for filling flexible bags includes an endless conveyor having a generally horizontally oriented upper run; and a plurality of bag holders mounted on the conveyor and distributed therealong. Each bag holder includes two cooperating plates extending upwardly from the upper (working) run of the conveyor and movable towards and away from one another.

Abstract: An apparatus for making flat packaging bags from a flexible web of indeterminate length includes a machine frame; a sled mounted on the machine frame for travel parallel to the direction of web advance; a first drive for reciprocating the sled parallel to the direction of advance; a mandrel mounted on the sled; a tubular folding body fixedly mounted on the machine frame and coaxially surrounding the mandrel for bending the web about the mandrel to form a web hose; a first sealing shoe mounted on the sled; a second drive for pressing the first sealing shoe against an outer face of the mandrel for providing a longitudinal sealing seam on the web hose situated between the mandrel and the first sealing shoe; a second sealing shoe mounted on the machine frame for displacements perpendicularly to the direction of web advance; a third drive for actuating the second sealing shoe for providing a transverse sealing seam on the web hose; and a cutter for severing a length of web hose from the web.

Abstract: An apparatus for introducing articles into a storage device includes a feeder conveyor for advancing articles toward the storage device in a direction of advance; a support for movably supporting the feeder conveyor such that its discharge end is movable in a direction transverse to the direction of advance of articles on the feeder conveyor and generally parallel to a direction of motion of article-supporting elements of the storage device at the inlet thereof; a drive for moving the feeder conveyor in the direction of advance; a drive for moving the support to thus displace its discharge end transversely to the direction of advance; and an arrangement for synchronizing the motion of the discharge end of the feeder conveyor with the motion of a selected one of the article-supporting elements for transferring articles from the feeder conveyor to the selected article-supporting element during simultaneous motions of the article-supporting elements, of the feeder conveyor in the direction of advance, and of the

Abstract: An apparatus for forming a column of spaced articles has a supply belt and a downstream-adjoining removal belt. The article transfer location between the two belts is formed by belt-supporting end rollers, one defining the downstream end of the supply belt and the other defining the upstream end of the removal belt. The two rollers together define an article transfer location. The two belt-supporting end rollers are mounted on a first carriage which is movable parallel to the conveying direction and which is attached to the upper reach of an endless flexible element. A second carriage is secured to the lower reach of the flexible element. On the second carriage there are mounted two deflecting rollers about which the supply belt and the removal belt are trained, respectively. The endless flexible element is supported by end rollers and is driven by a motor connected to a regulator.

Abstract: A rotary assembly for attachment to a rotary shaft includes a rotary body; and a bore hole extending in the rotary body from one end thereof for coaxially receiving a rotary shaft. The bore hole has a longitudinal axis coinciding with a rotary axis of the shaft when received in the bore hole. A parting split defining a clearance extends in the rotary body from one end thereof. The parting split extends in a plane which contains the longitudinal axis. A slot extends in the rotary body from the parting split on either side of the bore hole. The slot defines a dividing plane which traverses the longitudinal axis and which divides the rotary body into first and second axially adjoining body parts. The bore hole extends consecutively in the first and second body parts, and the bore hole which extends in the first body part is circumferentially closed. Two clamping wings are defined in the second body part by the parting split, the slot and the bore hole extending in the second body part.