Abstract: Hollow cylinders of relatively rigidized paper are perforated in closely spaced circularly extending, axially spaced rows by perforating adjacent ones of the rows from opposite sides on the cylinders. Apparatus for perforating the cylinders uses a fixed rolling shoe and a rotating drum each of which carry needles to effect perforation. The method and apparatus are especially effective for perforating paper cylinder cigarette mouthpieces.

Abstract: A foraminous upperwardly inclined conveyor belt, which normally carries slices of vegetable, such as potatoes from the washer to the cooker is straddled by a spiked roller on the bottom side and a grooved roller on the other for progressively puncturing the vegetable while carried on the conveyor.

Abstract: A dispenser for flexible sheet material having a reserve roll that automatically moves into the dispensing position when the dispensing roll is almost exhausted. The sides of the reserve roll guide tracks are angled inwardly to engage the reserve roll spool at an off center point, so the spool is pushed downwardly into contact with a driving roller during rotation. The leading edge of the reserve roll towel engages the remaining portion of the almost exhausted dispensing roll and is moved therewith to be threaded through the dispensing mechanism. The perforating mechanism is assisted through the perforating stroke by a spring mechanism. The sensing roll is halted by a roll stop mechanism including a pivoted stop link and an anti-reverse pawl.

Abstract: A cutting device for cutting sheets of material wherein a cutting member co-operates with a bed of upstanding pins which support the sheet. Although the cutting member may be a knife, it is preferably composed of a line of upstanding pins which are sufficiently long to penetrate through the material to be cut and to enter the bed of upstanding pins. The cutting device may comprise two drums mounted for rotation in opposite senses about parallel axes, one drum carrying the cutting member and the other the bed of pins, the tips of the pins being aligned with the cylindrical surface of their associated drum.

Abstract: A unique preferably Y-shaped tear line-forming perforation is formed in the sealed marginal portion of a flat bag made of confronting panels of synthetic plastic material sealed together at marginal portions thereof. The perforation is formed with a unique bag-puncturing tool having a faceted, tapered tool head having preferably only three straight longitudinally extending bag-cutting edges converging to a bag-puncturing point at the end of the tool head.

Abstract: The invention contemplates mechanism for perforating signatures for ultimate use in glued binding of the signatures into a book. The perforating mechanism cuts chips in the course of continuous transport of the signatures, and the arrangement is such that the chips are transiently supported and transported out of the chip-cutting zone prior to forced ejection from the mechanism, thereby avoiding any fouling accumulation of retained chips at the cutting zone.

Abstract: A dispenser for flexible sheet material having a reserve roll that automatically moves into the dispensing position when the dispensing roll is almost exhausted. The sides of the reserve roll guide tracks are angled inwardly to engage the reserve roll spool at an off center point, so the spool is motivated to move downwardly toward the dispensing position whenever it is rotated. The leading edge of the reserve roll towel engages the remaining portion of the almost exhausted dispensing roll and is moved therewith to be threaded through the dispensing mechanism. The perforating mechanism is assisted through the perforating stroke by a spring mechanism and is halted by a roll stop mechanism including a pivoted stop link and an anti-reverse pawl.

Abstract: A method for manufacturing perforated plastic pipes, in particular corrugated thermoplastic pipes of which the wave valleys are perforated by at least one punching member, to which a velocity is imparted in the direction of conveyance of the plastic pipes, which equals the rate of conveyance of these pipes. During the punching operation the punching member or members retain substantially a perpendicular position with respect to the plastic pipes.

Abstract: Shrink film perforating unit for perforating thermoplastic film material, for example of the type used to wrap articles which are then subjected to heat shrinking tunnel treatment to shrink the thermoplastic material tightly around the article yet permit captive hot air to escape via such perforations, such unit being in the form of a rotary heated perforator arrangement including rotor having heatable external contact perforation points, e.g. in the form of a star wheel, and a stator with heating means captively received within an internal axial bore of the rotor for heating the external contact perforation points, with sufficient clearance being provided therebetween to permit unhindered rotation of the rotor about the stator, whereby the stator may be stationarily mounted with respect to the rotor and the rotor rotatably mounted so as to be disposable for location crosswise of the path of travel of a movable web of thermoplastic film material, e.g.

Abstract: Method and apparatus for punching holes in continuously moving board material are disclosed. The holes may be decorative or functional and are punched so that no or negligible elongation results. The board is continuously moved in a first direction at a first speed and at least one member having pins or other projections thereon is rotated simultaneously about two axes at angular speeds such that the pins contact and punch the board during a portion of the rotation of the member while the speed of the member and the first speed are approximately equal and with the projections being in an essentially predetermined orientation to the board. Since the projections are oriented with respect to the board and are moving at approximately the same speed as the board while they contact and punch the board, there will be no or negligible elongation of the punched holes.

Abstract: A tube perforating device for forming outlet openings in a tube, such as a plastic tube, having discharge openings for passage of air, or the like, where it is desired to diminish the sound of the discharge to a minimum, and the method of accomplishing such opening formations by multiple perforations with perforating members spaced as desired and having ovoid heads to permit perforations of the walls of the tube and withdrawing the head of the perforating means through the perforations, drawing the peripheral margins of the opening outwardly, leaving the inside wall of the tube smooth, thus diminishing turbulance therein, and said device having an adjustment permitting a selective penetration of both walls of the tubing, transversely, with just the point of the penetrating means perforating the bottom wall, forcing said peripheral margin outwardly on the bottom perforation, and withdrawing the said head through the upper wall penetration, again moving the peripheral margin outwardly, providing pairs of openin

Abstract: A device for manufacturing corrugated plastic tube by subjecting an internally unsupported corrugated plastic tube, at a temperature between 30.degree. and 70.degree. C, to the simultaneous action of at least two punching members in one or in two corrugations.A device comprising a guide for corrugated plastic tube, and punching means with an operating member for simultaneously acting upon at least two punching members spaced a short distance from each other.

Abstract: Disclosed is a roll fed rotary web device such as a rotary offset or rotogravure web printing press or a collator, having an improved perforator. Also disclosed are examples of prior art perforators. The perforator is incorporated in a standard perforating cylinder which rotates during the process of perforation. Perforating blades are mounted in the perforating cylinder and several improvements relating to spring biased positioners of the perforating blade are illustrated.

Abstract: A machine for perforating high density polyethylene film comprising a feed roller, cooperating male and female rollers between which the film passes for perforation and a take-up roller for receiving the perforated film material. A plurality of blade members are housed within the male roller and under the influence of adjustable indexing means are adapted for reciprocal motion relative to the surface of the male roller. In the vicinity of the female roller preselected ones of the blade members are caused to project from the surface of the male roller and to enter a complementary recess in the female roller to perforate the film material as it passes between the male and female rollers. The longitudinal distance between the perforations on the film is determined by the selection of blade members caused to project from the male roller during each revolution of the male roller.

Abstract: A mounting clip having projecting prongs is installed along an edge of a wall panel, to permit attachment of the panel to a support member having means for mating engagement with the mounting clip, by driving the clip prongs into the panel edge either with or without prior indentation of the edge by driving similar prongs of an indenting tool into the edge. Pressure is applied to opposite sides of the panel adjacent its edge during penetration of the latter by the tool or clip prongs to prevent bulging of the panel sides.

Abstract: Dispensing apparatus has a holder supporting an opened can of a jellied food product with its open end downwardly disposed and spaced from a stop that limits the extent to which the body of the jellied food product protrudes from the can. A blade is operable to sever a slice from the protruding end of the jellied food product and means are provided to ensure the discharge of the slices onto a receiver having means for collecting juices escaping from the can. Means are also provided to puncture the closed end of the can while supported by the holder and to provide an air assist to cause the jelly body to slide towards the stop.

Abstract: A thin sheet metal orifice plate is disclosed having at least one orifice therethrough with a rounded inlet to improve flow and an outlet defined by an encircling projection whose axis accurately conforms to a predetermined direction. Apparatus for the production of such an orifice plate is disclosed and includes a forming tool operable to form a spherical boss in a flat intermittently advanced thin metal sheet of orifice blank material. The apparatus includes an orifice plate blank trimming tool having a punch and die assembly for accurately trimming the spherical boss from a continuous strip such that an annular flange is provided therearound. An orifice punching apparatus is provided having a chuck for holding an orifice plate blank adjacent to a resilient backing material. The chuck is supported by an angular adjustment apparatus which, in turn, is rotatably supported on a base and provided with a pair of detent mechanisms. The detent mechanisms secure the angular position of the adjustment apparatus.

Abstract: A method and apparatus for the perforation of flexible film products, specifically flexible film bags wherein openings are provided for releasable retention of the bags on a wicket pin. Means are provided to form first and second openings, with said first opening comprising a plurality of spaced line slits intersecting generally at the mid-points thereof to form arcuately spaced wicket pin receiving sectors, and with one of said line slits being disposed generally parallel to the axis of the film bag. The second opening comprises a single line slit in projected continuation with that line slit of the first opening which is disposed parallel to the film bag axis, with the slit forming the second opening being disposed between the top open edge of the film bag and that line slit of the first opening which is parallel to the film bag axis.

Abstract: A flexile core material for laminated structures is produced by providing a sheet of rigid elastic foam plastic material having a pair of opposite sides; slotting the sheet from one side to form a plurality of longitudinally extending, contiguous, strips of equal width, said strips being articulately interconnected by hinge pieces constituted by unslotted portions of the sheet on the other side thereof, said unslotted portions being longitudinally spaced at equal intervals, and slotting the sheet transversely from one side to divide said strips into rectangular block-like elements of equal length, said elements being separated from one another save at said hinge connections.

Abstract: Opposed C-shaped cuts can be made in plastic film in a continuous manner by passing the film between a punch roll bearing specially designed punches and a mating roll having wells for receiving the punches. The special design of the punches overcomes the problem of stretching and tearing of the film normally encountered in attempting to make such cuts in plastic film using a rotary punch.

Abstract: Apparatus for wrapping cigar bunches has a first conveyor consisting of two endless belts having filler-engaging stretches which cross each other in space and move a single file of bunches lengthwise while simultaneously rotating the bunches about their axes. One of the stretches feeds an adhesive-coated web which is convoluted around successive bunches to form a tube consisting of partially overlapping helices. The tensile strength of the tube is reduced between successive wrapped bunches by a row of needles mounted on an endless toothed belt or drum which makes with the path of the tube a first angle equal to the angle between the plane of one belt of the first conveyor and the axis of the tube. The row of needles on the toothed belt or drum makes with the plane of the toothed belt or drum a second angle which equals 90.degree. minus the first angle.

Abstract: A mechanism for perforating a web of flexible sheet material which is adapted to be used in a flexible sheet material dispenser, said mechanism comprising; a rotatably mounted roller, a rotatably mounted knife positioned adjacent the roller and having a radially outward portion defining a cutting edge for perforating the web as the web passes between the roller and the knife, the roller being operatively connected to the knife for synchronous rotation therewith and having a slot therein for receiving the radially outward knife portion as the knife rotates past the roller, and means associated with the knife for orienting the cutting edge substantially in the direction in which the radially outward knife portion moves with respect to the web during the entrance of the portion into the slot so that when the portion enters the slot the cutting edge will effectively perforate the web.