Abstract: The folding blade spindle of a folding drum is rotatably driven by a single drive train that utilizes only one gear drive pair. The folding drum itself is rotated by a separate drive assembly. The use of only one gear drive pair for the folding blade spindle drive substantially reduces play in the folding blade and promotes accurate folding of printed products.

Abstract: Fine paper that is sized with a 2-oxetanone alkaline sizing agent and that does not encounter machine feed problems in high speed converting or reprographic machines, including continuous forms bond paper and adding machine paper, processes for converting the paper into envelopes, continuous forms bond paper and adding machine paper, and paper products of the processes.

Abstract: In a rotary printing press with at least one folder, which comprises at least one cutting cylinder and one folding jaw cylinder, each folder is driven, due to being equipped with at least one separate drive motor, mechanically independently at least from the printing units of the printing press, and can be installed and registered independently therefrom.

Abstract: A carton engaging assembly for use in continuous motion packaging machines is designed to perform specific functions on a carton as it moves continuously along the path of travel through the packaging machine. The carton engaging assembly includes mechanisms for aligning the carton engaging device perpendicular to the carton's path of travel and to the carton side wall, so that the engaging device enters and exits the carton side wall along the substantially perpendicular line of travel. The carton engaging assembly is a self-contained, rotary unit which is readily interchanged with other units to facilitate engagement with various sizes and shapes of cartons. The rotational movement of the carton engaging assembly is timed with the continuous linear movement of the carton along the carton path of travel.

Abstract: A folder for a web-fed rotary printing press includes a cooperating pair of collection and cutting cylinders to sever a paper web into web segments. A belt conveyor system enwraps a portion of the surface of the collection cylinder just before an intake point of the paper ribbon between the collection cylinder and the cutting cylinder. This belt conveyor system prevents the newly created leading edge of the paper ribbon from springing back.

Abstract: A folding apparatus of a rotary printing machine includes a combination of a plurality of folded-product guiding cylinders including at least one cylinder with adjustable folding blades and impaling pins, and at least one cylinder with folding jaws, and transfer cylinders with gripper devices as well as perforating devices, the folding blades, the impaling pins, the folding jaws, the gripper devices and the perforating devices being adjustably mounted in the respective cylinders adjacent respective outer cylindrical surfaces thereof, a device operatively connected to at least one of the cylinders for automatically adjusting a fold, the adjusting device being actuatable for varying respective operating positions of the folding blades, the impaling pins, the folding jaws, the gripper elements and the perforating elements relative to one another at the respective outer cylindrical surfaces of the respective cylinders, and a remotely controllable drive for operating the adjusting device.

Abstract: The present invention pertains to a variable size folding machine 10 in which a plurality of cross perforaters 61, 62, and 63 are disposed. Any of the plurality of cross perforaters 61, 62, and 63 may be selected for forming lateral perforations on a signature 15 of a corresponding size. A lateral perforated line is applied by the selected cross perforater to the print paper 14A-14F printed in the printing machine and delivered therefrom. Each of the cross perforaters 61, 62, and 63 can be integrated and moved as a cross perforater unit 60 to thereby select a particular cross perforater.

Abstract: A machine for cutting and folding an uninterrupted printed web of paper to produce folded sections includes a cutting cylinder cooperating with a transfer cylinder. The transfer cylinder is rotationally driven about its longitudinal axis and interacts with a folding cylinder having a set of folding jaws. The transfer cylinder has an external transfer surface interrupted by a number of sets of impaling pins and engaging blades intended to introduce the transversely cut web of paper into the folding jaws. The transfer cylinder also includes means for causing the angular spacing between the engaging blades and the impaling pins to vary. The disclosed transfer cylinder also includes, in the region of its external transfer surface, a set of closure plates on either side of each engaging blade and on either side of each set of impaling pins.

Abstract: Folding apparatus for signatures having a given format includes at least a first longitudinal folding device, a plurality of cylinders arranged in succession thereafter and followed by at least a second longitudinal folding device. Also included are a cylinder section having a base frame, and two cross-fold systems operatable independently of one another and integrated in the base frame. Each of the cross-fold systems has cylinders for guidingly carrying signatures having a given format, the signature-carrying cylinders being of such diameter as to have an outer cylindrical surface extending over the circumference thereof adequate for carrying one behind the other at one time at least two of the signatures having the given format.

Abstract: The automatic trimming machine of the present invention utilizes a conventional web press to print various sizes of postal and insert cards, flyers and coupon books completely on-line. The automatic trimming machine of the present invention includes a device for perforating the paper to define a folding line and a paper folding device for folding the paper along the perforated folding line. A preliminary trimming unit will first trim the left and right sides of the folded paper, including removing the backbone of the folded paper. The severed backbone is then removed from the preliminary trimming unit. The top and bottom edges of the paper are then trimmed to the appropriate size prior to the paper being cut into distinct products in a finish trimming unit. The finish trimming unit includes a plurality of adjustable cutting blades to allow for cutting of various sized products.

Abstract: The present invention relates to a folder for a rotary offset printing press comprising a transfer cylinder, a first-fold cylinder and a second fold cylinder. Each of the cylinders is constructed of two imbricated independent parts, and inner part and an outer part, moveable relative to one another and equipped with a respective driving gear. The drive gears of the respective cylinders are coupled to one another two-by-two so that coincidence between the cylinders is preserved. The drive gears of the transfer cylinder are connected to one another by a first pair of coupling gears coaxial relative to one another and interconnected by a first disengageable coupling and the drive gears of the first-fold cylinder being connected to one another by a second pair of coupling gears coaxial relative to one another and interconnected by a second disengageable coupling.

Abstract: An interfolded boxed bag arrangement and method and apparatus for making the same from plastic tube or sheeting stock. Plastic tubular or sheeting stock is unwound off two rolls under tension. The stock proceeds to various stations where it is cut into bag lanes by rotary knife blades. A bag lane is cut between each pair of rotary knife blades with a hot knife to form a sealed bottom for the bags. The bag lanes are then cut to a specified length with a hot knife which seals each side of the bag. Bags produced by each roll of stock material are staggered adjacent to one another and are interfolded with each other by a set of rotary gripper fingers and tucker fingers to form an interfolded stack of bags. The stacks are placed into a dispensing box for individual dispensing.

Abstract: A device for fabricating toilet seat covers from paper sheeting comprises three paper shearing and folding assemblies positioned one over the other, each assembly including a drive roll, as well as two additional compression rolls which shear and fold the sheeting. Three layers of the sheeting are fed simultaneously through rotary cutting rolls, and subsequently to the drive rolls associated with each of the assemblies. While one of the layers is fed to the bottom assembly drive roll, a double layer of sheeting proceeds to the drive roll of the middle assembly. There the double layer of sheeting is separated, with one layer being fed to the drive roll of the top assembly, and other layer proceeding through the other compression rolls of the middle assembly. Completed covers exiting from the superimposed assemblies are collated and transferred by transport and collating belts to a transversely adjustable ejection mechanism where the covers are ejected from the device.

Abstract: The present invention relates to a printed paper folding apparatus comprising: conveyor means provided from the upstream side of a folded paper conveying path located below a folder unit to a folded paper cutting position on the downstream side thereof so as to convey a sheet of printed paper which is folded and discharged by the folder unit in a zigzag fashion; a folded paper separating position indicating device provided along the paper conveying path so as to indicate separating positions at intervals of a predetermined number of folds of the printed paper which is folded and discharged by the folder unit; a folder paper cutting device provided by the cutting position so as to automatically cut the paper, which is continuously conveyed by the conveyor means along the conveying path, into an upstream portion and a downstream portion relative to the conveying path; and a paper sorting device provided near the cutting position so as to automatically sort the upstream portion of the paper from the downstream p

Abstract: A device for fabricating toilet seat covers from paper sheeting comprises three paper shearing and folding assemblies positioned one over the other, each assembly including a drive roll, as well as two additional compression rolls which shear and fold the sheeting. Three layers of the sheeting are fed simultaneously through rotary cutting rolls, and subsequently to the drive rolls associated with each of the assemblies. While one of the layers is fed to the bottom assembly drive roll, a double layer of sheeting proceeds to the drive roll of the middle assembly. There the double layer of sheeting is separated, with one layer being fed to the drive roll of the top assembly, and other layer proceeding through the other compression rolls of the middle assembly. Completed covers exiting from the superimposed assemblies are collated and transferred by transport and collating belts to a transversely adjustable ejection mechanism where the covers are ejected from the device.

Abstract: The apparatus for the production of paper napkins or other similar products which includes a feeder for continuously supplying a web of material, a slitter for cutting the web into a plurality of longitudinal strips, a first folder to fold the strips lengthwise, a transverse cutter for providing lengths of longitudinally folded strips, a second folder to fold the strips transversely, and a stacker to pile up the finished napkins. A driving roller matches the two edges of the longitudinally folded strips and downstream of the driving roller are inclined surfaces to separate the longitudinally folded strips to lay them down on a common geometric plane parallel to each other.

Abstract: A folder comprising a knife cylinder adapted to be driven at a rate independent of the speed of the web being supplied, a mating cylinder adapted to cooperate with said knife cylinder in cutting a web into sections at a cutting nip and which is provided with grippers for the leading edges of the sections, and a belt conveyor belt trained around a part of the circumference of said mating cylinder following said nip. It is possible to ensure more accurate production and greater reliability if the folder is so designed that it includes at least one of the cylinders delimiting said cutting nip and having suction or blowing ports placed following the cutting means, such ports being adapted for causing a flow of air towards the cylinder having said grippers.

Abstract: A bag folding machine for folding thin plastic bags, such as polyethylene bags, comprises two bag folding arrangements which substantially are made of a pair of folding drums provided respectively with longitudinal grooves, swing grippers and thrusting and cutting blades. The phase difference between the folding drums is determined so that the longitudinal grooves and the thrusting and cutting blades of one folding drum of the two folding drums coincide with the thrusting and cutting blades and longitudinal grooves of the other folding drum, respectively, at the point of tangency of the folding drums. Due to such construction, the machine is capable of alternately folding thin plastic bags in two so that the trailing half of the preceding folded bag folded by one of the bag folding arrangements and the leading half of the succeeding folded bag folded by the other bag folding arrangement overlap each other.

Abstract: Folded articles, such as paper napkins, handkerchiefs, and the like are puced of an intially continuous web or sheet material which is moved into a folding machine in a feed advance direction at a controllable feed-in speed. The sheet material may be folded once lengthwise around the feed advance direction before it is cut by a cutter operating at equal time intervals. The cut sheet material sections are then accelerated and after the acceleration they are folded at least once crosswise around a direction perpendicularly to the feed advance direction, whereby the cut sections travel at a constant speed during the crosswise folding and subsequent stacking. The feed-in speed is kept constant as long as articles of a given size are being produced. When the article size is to be changed, the feed-in speed is accordingly changed.

Abstract: Downstream of a paper leaf stacking machine, e.g. a paper napkin folder, there is a device comprising supports on each of which is mounted at least one leaf separating finger.Each support is kept, by a stop, in a fixed position corresponding to that in which the paper folder forms and deposits the folded leaves. After a predetermined number of leaves have been deposited, the stop is disengaged and the finger is snapped in between one sheet and the next and so advances at least part of the way with the stack of folded sheets. At a certain point of the path, each pack of leaves, as marked by two successive fingers, is lifted out by a forceps or the like and each support is returned to its starting position.

Abstract: An improvement for use in machinery for interfolding porous cut sheets is disclosed having two adjacent and counter-rotating folding rolls each having projecting tuckers and recessed grippers arranged alternately on the folding rolls such that a tucker on one roll mates with a gripper on the other. Porous cut sheets are selectively adhered to the folding rolls by vacuum ported to the tuckers and grippers.

Abstract: A zigzag folding apparatus has conveyors for transporting a zigzag folded web from a folding station to a discharge station, and an adjustable web cutter for separating the web at adjacent folds into groups of folded web segments during the process of transporting the web and before the web reaches the discharge station.

Abstract: In a folding apparatus with a transverse cutting and transverse folding unit fed by a first longitudinal folding unit and with a second longitudinal folding unit followed by a delivery unit, simple development and expansion of the folding apparatus step by step is made possible by arranging the transverse cutting and transverse folding unit on a basic frame and arranging the second longitudinal folding unit on a lower additional frame. Furthermore the basic and additional frame are arranged at the same level and are provided with connection structure adjacent to each other and over the connection on the basic frame there is a further connection structure for a superposed frame with transverse and longitudinal forming unit. The additional frame is provided with support surfaces for the superposed frame which has corresponding surfaces.

Abstract: To permit formation of a transverse perforation in advance of a second cross fold, a first folding blade cylinder (5) equipped with needles (6) and preferably forming a collection cylinder has folding blades, to receive products, cooperation with a first folding flap cylinder (8). In accordance with the invention, the folding flap cylinder is formed with at least one axially extended perforating groove (10) and an associated folding and perforating blade cylinder (11) has a combination perforating and folding blade (13) which engages a folded product once to push the folded product into the perforating groove (10) to form perforations and, upon further travel of the folded product, transfers the product to a second folding flap cylinder (14) having folding flaps (16) to again engage the products with the combination perforating and folding blade to form a second transverse fold in the folding flaps of the second folding flap cylinder (14).

Abstract: A method and apparatus for the manufacture of filters in which a filter material in the form of a continuous length (5) is folded to form pleats (39). The pleats are attached to their ends along the lateral edges of the filter material and are sealed in this way one against the other so as to form a flow path for the medium which is to be filtered into the spaces between the pleats on one side of the filter material, through the material, and out into the spaces between the pleats on the other side of the filter material. During the process of attaching the ends of the pleats to one another, the pleats are kept separated from one another by a pre-determined distance between their outer folded edges by means of a device (18) provided with a number of combs (20) which extend inside the pleats and hold them in this way at the aforementioned pre-determined distance from one another.

Abstract: The present invention relates to second-fold rollers for a folding device adapted for cutting and folding superposed paper webs into a folded section of superposed sheets. The second-fold rollers are arranged in a pair in parallel each other, at least one of which is provided with at least one of non-contact section so formed as to prevent from contacting with the rear corners of the paper sheet to be passed between these second-fold rollers. The non-contact section is a recess partially formed in its cylindrical surface near each end of the second-fold roller.

Abstract: Zig-zag folded layers of paper webs are stacked downstream of a folder on a lifting table. A belt is raised to hold a nearly completed stack from below and a separating rake with leading spear shaped heads is moved into the stack at a division between sheets, and severs the stack along a fold. The lifting table and separating rake are shifted together as the separating rake advances, during which the stack to be removed is supported on the raised belt. A new partial stack accumulates on the separating rake while the old stack is removed, the belt is lowered and the table is raised. The table and rake are then returned to their original position to resume stacking on the table. Shifting of the table and separating means, and movement of the raised belt, are driven from a common drive by means of a controllable freewheel clutch engaging over a part of the cycle.

Abstract: A machine for continuously and automatically cutting, folding and packing sheet material into rolled up webs. The machine is provided with two variable speed drive devices which continuously pulls the sheet material into the machine where it can be cut and folded. The second variable speed drive device comprises a variable speed transmission that operates the folding devices which comprises pivotable plates, folding rollers and the cylinder. The pivotable plates directs the material between the roller and the cylinder by links and levers so that multiple folds may be made in the material. The links and levers are operationally connected to the variable transmission.

Abstract: To prevent withdrawal of a sheet adjacent a moving folding blade in a folding blade-type folding apparatus in which a folding blade is carried by a folding blade cylinder, the blade projecting against a plurality of superposed sheets to press them against folding grippers in a folding gripper cylinder, the outermost sheets are pre-punched with windows placed along the fold lines, and the folding gripper cylinder is formed with projecting grippers which extend through the notches formed upon folding to grip the innermost sheet and prevent inadvertent withdrawal thereof upon withdrawal of the folding blade from the notch in the folding gripper cylinder.

Abstract: An apparatus for segmenting a continuous running web into a stream of discrete articles by cutting the web transversely at uniformly longitudinally spaced intervals; and which apparatus may also effect U-folding of each of the discrete articles. The apparatus is of the type which includes a flight of longitudinally spaced, web engaging friction plates which provide cutter access to the web through spaces intermediate adjacent friction plates. The apparatus further includes a constant clearance infeed nip which is formed in part by the spaced friction plates of the flight passing over a circumferential portion of an infeed roll having circumferentially spaced, radially extending lugs, and which lugs are configured and disposed to engage the web by extending through the spaces intermediate the spaced friction plates. Alternatively, the flight of friction plates may be integrated into a unitary apertured conveyor belt; and the cutter may be integrated into such a constant clearance nip.

Abstract: The disclosed signature handling apparatus is for use with a saddle conveyor which moves signatures with a folded edge up along a path through a series of stations. The apparatus transfers signatures from the saddle conveyor to the infeed conveyor of a signature trimmer in a smooth motion and without abrupt changes in speed or direction. The infeed conveyor to the signature trimmer is located in a plane parallel to and above the path of the saddle conveyor. The apparatus includes a tucker blade mechanism which contacts the folded edge of the signature from below the saddle conveyor. The tucker blade mechanism moves the signature forwardly and upwardly from the saddle conveyor as it moves in a vertical plane through a path which is oblique relative to the saddle conveyor. A gripper finger assembly grips the signature from the tucker blade mechanism and continues the forwardly and upwardly movement of the signature and simultaneously rotates it about an axis parallel to the saddle conveyor.