Abstract: A paper punch has an inner punch and an outer punch movably received with respect to each other. The outer punch has a first contour punch so as to be able to punch a hole in a piece of paper with the same contour as that of the first contour punch, and the inner punch has a second contour punch so as to punch a small hole in a piece of paper with the same contour as that of the second contour punch. Because the second contour punch moves first and the first and the second contour punches are placed concentrically, a piece of paper is then able to be punched twice by the first and the second contour punches to have an attractive shape.

Abstract: An apparatus and method for cleanly breaking a continuously advancing cellulose web includes a transfer fabric which supports and advances the cellulose web to a wind up zone. The transfer fabric forms a closed loop and is driven at a desired speed by a drive roll. At least two spray nozzles are arranged transversely across the advancing cellulose web as it is carried on the transfer fabric. The spray nozzles are capable of emitting a liquid under high pressure against the advancing cellulose web to form perforations across the width thereof. A plurality of hollow cores are independently and sequentially moved into position at the wind up zone to receive the advancing cellulose web. The hollow cores are located downstream of the spray nozzles and each hollow core is capable of accumulating a predetermined amount of the cellulose web.

Abstract: A wire stripper has a blade (33) projecting from a carrier (35) mounted in a handle (56). A hook-shaped wire clam (45) is slidably mounted in the handle and is spring-urged towards a position where a wire is pressed by the clamp on to the blade. The clamp (45) may be turned relative to the blade (35) about the axis of the handle between first and second positions when the blade performs a circumferential cut around a held wire or a longitudinal cut along a held wire, respectively. The clamp (45) may be turned through an acute angle from the first position to a third position where the blade (33) performs a helical cut along a held wire. A spring biases the clamp to the first position, or selectively to the third position.

Abstract: A dual purpose rule guard for two-piece rotary cutting dies consists of a pair of confrontable allochiral guards. Each defines on its confronting surface a first portion thereof recessed inwardly therefrom and a second portion thereof projecting outwardly therefrom. The guards of the pair are interdigitable for assuming an interlocked position with respect to each other to insure the correct alignment of the cutting dies and of their rules. Additionally, each guard is so positioned relative to its cutting die that its second outwardly projecting portion projects outwardly of the confrontable edge or join line of the cutting die so that it functions as an overhang to keep the knife at the join line upwardly and away from any storage surface.

Abstract: A cutter wheel which can form a deep slit on an article to be cut so that the article can be broken easily along the slit and a perpendicular cut surface can be formed reliably when the article is broken along the slit. The cutter wheel is a disk-shaped member having a cutting edge along the outer edge and formed with a mounting hole extending therethrough along its axis. The mounting hole has an irregular shape so that the cutter wheel vibrates when it rolls due to steps between adjacent sides of the polygonal hole. The edge of the wheel can thus penetrate more deeply into the glass plate so that a deeper and smoother slit can be formed in the glass plate. This in turn makes it possible to more easily break the glass plate along the slit and to form a perpendicular cut surface.

Abstract: A knife is described including a handle with a blade mount. An elongated blade with a handle mounting surface is releasably engageable with the blade mount on the handle to enable selective attachment and detachment of the blade to and from the handle. The blade mount includes a blade back configured to receive a length of the blade and a tang disposed within the handle. A blade release is formed integrally with the tang and includes an integral elongated bar spring extending longitudinally within the handle from an end joined integrally with the tang, to a laterally movable free end. A blade lock is located on the elongated bar spring adjacent the movable free end, laterally positionable by deflection of the elongated bar spring to selectively engage and lock the blade in an extended operative position, and a release position clear of the blade.

Abstract: An apparatus for cutting a web with a rotary cutter 31 includes a cutter drum 42, which has an air suction chamber 58 and air discharge chambers 59A and 59B, these chambers being formed in its inside, as well as having first air jet holes 71, second air jet holes 72, and third air jet holes 73, these air jet holes 71 to 73 being open in its outer periphery.

Abstract: A knife holder includes two transparent plates, a plurality of partitioning blocks, a plurality of securing blocks, and a plurality of larger securing blocks. The partitioning blocks are spaced equi-distantly apart between the plates such that the plates define a receiving space. Upper ends of the plates are provided with a plurality of pairs of opposite indentations. The receiving space and the indentations are sized to receive knives. The knives are divided by the partitioning blocks so that they do not overlap. The partitioning blocks have front and rear ends forming bolt portions that pass through corresponding through holes in the plates for screwable engagement with the securing blocks so that the plates can be screwably secured on the partitioning blocks. The larger securing blocks are secured at two lower corners of each plate so that the knife holder can stand on a planar surface.

Abstract: An extensible cutlery device has a hollow tube, a first casing disposed in the hollow tube, a second casing disposed in the hollow tube, and a fork device disposed between the first casing and the second casing. The first casing engages with the second casing. The fork device has a handle inserted in a spacing defined between the first casing and the second casing. A drive mechanism drives the fork device to extend and retract. A plug seat has two hook ends inserted in a rear end of the hollow tube.

Abstract: A brick cutting apparatus which includes a base frame, a cutter holder moved along a guide track at the base frame, a disk cutter and a stop plate respectively coupled to the cutter holder by a respective screw bolt, and a handle connected to the cutter holder and operated to move the cutter holder over the brick to be cut, wherein a carrier is coupled to a dovetail groove at one lateral side of the base frame to hold a supporting leg outside the base frame for supporting the brick to be cut on the base frame; the disk cutter has two reinforcing flanges raised from two opposite side walls thereof, and a bearing at a center through hole thereof which receives the corresponding screw bolt; a set of rubber packing blocks of different thickness are selectively fastened to the stop plate at a bottom side by a plug joint to adjust the vertical thickness of the stop plate subject to the thickness of the brick to be cut.

Abstract: A scroll saw with an adjustable tensioning mechanism includes a housing having an inner surface and a pivoting arm having a rearward end disposed within an opening in the housing. A first blade clamp is disposed at the forward end of the pivoting arm and secures the upper end of a saw blade. The lower end of the saw blade is secured in a second blade clamp disposed at the forward end of a lower arm. A wedge is disposed within the housing, in contact with the inner surface of the housing. The wedge also is disposed in contact with and translatable along a surface of the pivoting arm. A rod is linked to the wedge at one end and extends through the pivoting arm. The rod includes an upwardly turned arm. A cam having a spiral track is rotatably mounted at the front of the pivoting arm with the upwardly turned arm disposed in the track.

Abstract: A hole cutter adapted for cutting holes through the sidewalls of medical catheters is fashioned from a hollow tube having a distal cutting end, a proximal ejection end and a lumen of smaller diameter near the cutting end. Slugs formed at the cutting end are extracted by suction applied to the ejection end, and are captured by a filter.

Abstract: An apparatus and method for cutting a surgical suture at a first and second different location along its length. The apparatus having a first and a second cutting die with channels for receiving at least a portion of the cross-section of the surgical suture at each location. Each of the first and second cutting dies respectively is provided with an opposing cutting die to further restraint the suture. A blade is also provided at each cutting location for cutting the suture at a point adjacent to the respective cutting dies when the suture is restrained between the sets of dies.

Abstract: A system is provided for cutting and finishing muntins. The system comprises a device for cutting muntins, a device for pinning muntins, and at least one device for punching muntins. The device for cutting muntins comprises a pair of cutting blades that are independently rotatable, translatable and positionable, and indexable, and further comprises means for precisely measuring muntins fed into the apparatus. The device for pinning muntins comprises means for stabilizing a muntin during punching; a guide, which is preferably magnetic; a pin or a blade, which is preferably made of metal; means for punching the pin or blade into a muntin; and means for precisely measuring the location at which a pin or blade is to be punched into a muntin. The at least one device for punching muntins comprises means for stabilizing a muntin strip; means for cutting the muntin strip; and means for translating the means for cutting. Power for the at least one punching apparatus is preferably pneumatic.

Abstract: The invention relates to a cutting machine for cutting a flexible material by a cutting wheel rotated by a motor. The cutting wheel and the motor are carried by a cutting head mounted to move horizontally along two orthogonal axes and to rotate about a vertical tangential servo-control axis. The invention further includes a support table covered with a mat into which the cutting wheel penetrates. The cutting wheel is adjustable to change the depth to which the cutting wheel penetrates into the mat. The cutting wheel is also adjustable to change the horizontal distance between the vertical tangential servo-control axis and the axis rotation of the cutting wheel so that the cutting wheel penetrates into the mat a front contact point situated in the vicinity of the tangential servo-control axis.

Abstract: A portable, hand-guided working tool has a drive motor and a motor housing in which the drive motor is housed. The motor housing has a front side and a rear side when viewed in the direction of the longitudinal center axis of the working tool. A tool member is connected to the front side of the motor housing and extends forwardly in the direction of the longitudinal center axis. The tool member is driven by the drive motor. The rear grip is connected by vibration damping elements to the rear side of the motor housing and extends rearwardly in the direction of the longitudinal center axis. An abutment device includes a first abutment member connected to the motor housing and positioned between the rear end and the rear grip and includes a second abutment member connected to the rear grip and cooperating with the first abutment member for limiting a relative movement between the motor housing and the rear grip.

Abstract: In a paper-punching device for use in an image-forming apparatus, the rear edge of a sheet of paper that is being transported through a transport guide is detected by the photosensor. After a predetermined time has passed since the detection, a punching device is activated. At this time, a punching member is depressed downward, and a punching blade attached to its top penetrates through the sheet of paper, thereby forming a punch hole. Even during the punching operation, transport rollers continue to rotate. Therefore, when the sheet of paper is caught by the punching blade, the transport rollers are allowed to slip predetermined amount with respect to the paper. For this reason, at least one of the transport rollers is made of a foamed material. With this arrangement, since the punching operation is carried out on the rear side of the sheet of paper, it becomes possible to reduce the occurrence of paper jams even if sheets of paper are transported in succession.

Abstract: To manufacture orifice disks, polygonal workpieces are prefabricated and oblique holes are punched successively by positioning the polygonal workpieces in different angular positions between lateral stops on an inclined bearing surface of a fixed punch die. The workpiece is removed after punching a hole, arranged in the following angular position and positioned between the lateral stops in order to punch the following hole. The removal and positioning of the workpiece in different angular positions is repeated to provide the required arrangement of punched holes. A device for manufacturing orifice disks includes a punch, lateral stops, and an inclined bearing surface of a fixed die. Accordingly, the series production of orifice disks of multiple-orifice nozzles for fuel-injection engines is accomplished.

Abstract: A table saw has a motor driven rotary blade disposed in a blade case and vertically adjustable with respect thereto. During cutting, wood chips are expelled from the blade case even when the rotary blade is vertically disposed away from a bottom of the blade case. An air current, provided by a fan driven by the motor, is blown from a motor gear housing and guided to the blade case via a plurality of guide members. The air current subsequently blows along an inner surface of the blade case in order to blow the wood chips out a chip discharge port.

Abstract: A rotatable perforating roll, for use in a continuously operating paper-converting rewinder, comprises at least a first plurality of pockets and a second plurality of pockets, each of the pockets designed to receive at least one perforating surface therein. The pockets are spaced apart from one another along the roll's outer circumference such that the pockets of the first plurality are equally spaced from one another at a first angular distance, and the pockets of the second plurality are equally spaced from one another at a second angular distance different from said first angular distance, but the pockets of the first plurality are unequally spaced from the pockets of the second plurality.