Abstract: A sheet punching machine comprising a support for the sheet to be punched and a punch carrier carrying a multiplicity of punches, together with means for forcing the punches through the sheet; said means are so arranged as to press the punches successively, one after the other, through the sheet, and return means are provided to return to their starting position the punches which have passed through the sheet. The means of forcing the punches may comprise two parallel endless chains mounted on two pairs of coaxial toothed wheels fixed in rotation in pairs, at least one transverse shaft fixed to the two chains and carrying a working roller and two running rollers, and two rectilinear support surfaces for the running rollers, the punches being axially movable at least approximately perpendicularly to the trajectory of the rollers and having a part which intersects the horizontal path of the working roller when the running rollers run on the said support surfaces, the return means for the punches being elastic.

Abstract: A punching device for use in a fixed frame adapted to support punch means in alignment with a ram. An assembly of a punch, a guide and stripper plate and a stripping spring is removable as a unit. The assembly of this invention is characterized by means by which the assembly is retained together when removed from the frame of the punching machine. The assembly includes a quick release guide, a clip ring spring support retainer and a replaceable stripper plate.

Abstract: A feedstock cutting and feeding device for forming machines having a reciprocating cutter which will cut the feedstock in one, short stroke and hold the cut feedstock in a position to be easily introduced to a transfer disc by the advancement of the feedstock.

Abstract: A novel die set and a power pack that is adapted to be mounted thereon define, in part, the improved punch press comprising the present invention. Hollow, magnetizable leader pins having spring actuated stripper buttons therein are used as the armature for the power pack which also includes coil means positioned concentrically about at least one end of the leader pins. The coil means may be made in several discrete sections which are electrically connected parallel to each other and where more than one coil means is utilized, the plurality of coil means are also connected in parallel to each other. The power pack comprising the present invention is readily attachable to the movable portions of the die set.

Abstract: The cutter comprises a cutter body having an upper support surface formed with an elongated rectangular opening with inwardly extending rails on the opposite longer sides of the opening and on one end of the opening. An open rectangular support frame is engageable with the rails and has a length less than that of the opening, for reciprocation along the rails, and coil springs, engaged in recesses in one end of the rectangular opening bias the support frame to engage the other end of the opening. An open rectangular blade frame is removably and conformingly seated in the opening of the support frame, and has a plurality of cutting blades extending longitudinally across the opening therein in equispaced substantially parallel relation. A pressing cover is hinged at one end to the cutter body and has a free end provided with an operating handle, and the pressing cover has projections on its inner surface engageable through the spaces between the cutting blades.

Abstract: Punching device for punching paper comprises a frame, a cooperating base supporting the frame, a plurality of individual punches removably and changeably mounted in the frame and an operating handle for actuating the punches. The frame is made of a single sheet of metal which is bent to form a U-shaped punch holding section comprising an upper portion, a lower portion and a portion connecting the upper and lower portions at one side and a die section which is joined with the lower portion of the punch holding section by a fold line and underlies such lower portion with an intervening space to receive the material to be punched. The upper portion and lower portion of the punch holding section have aligned bearing holes removably to receive and guide spring biased punches and the punching section has aligned punching holes to receive the lower ends of the punches when actuated by the operating handle.

Abstract: A Punch and Stripper Assembly for use in a punch press includes a punch with a shoulder at an intermediate portion thereof, a head threaded onto an end of the punch for being engaged by the ram of the press, a compression spring engaging the head, a washer engaging the opposite end of the spring, a retainer acting between the punch shoulder and the washer, and a stripper sleeve for acting between the workpiece and the retainer, whereby the position of the head on the punch provides a preload to maximize spring life, as well as to control the effective height of the assembly with respect to the ram. With this assembly, no special tooling is needed to assemble it. The retainer can be inverted to alter the retractive position of the punch shoulder.

Abstract: A feedstock cutting and feeding device for forming machines of bolt nuts and other products of similar shape wherein the moving distance required by a cutter to cut off the rod material is the distance between the original position thereof and the center of the cut-off die.

Abstract: The power stroke of the within punch press results from the electrical interaction of an armature, attached in depending relation from a superposed positioned die set, and a solenoid coil located in the supporting base of the press. In assembling each component of the sub-assemblies consisting of the supported die set and of the supporting base, a positional relation is achieved for each component which in the assembly of the die set onto the base contributes to a proper projected positioning of the armature within the encircling solenoid coil, to thereby achieve the required electrical reaction therebetween without losses or other inefficiencies.

Abstract: A paper knife is mounted at its opposite ends on a pair of arcuate arms pivotally attached to the knife table. The knife is operated by a fluid cylinder which extends from the table to the knife. This way all of the operating apparatus is positioned beneath and not above the table, thereby providing a low profile so that the operator may reach over the knife. Various mechanical details enable quick paper sets and closer cuts.

Abstract: A system for enabling X-ray films, of the type primarily used in the dental and medical fields, to be handled in daylight for exposure to X-rays. The system utilizes identical film sheets emulsion coated on one or both faces, each sheet having a notch, displaced from the sheet center line, formed in one edge thereof. A stack of sheets is packed in an opaque envelope with the sheets being alternated so that all of the notches lie along a common stack edge arranged in two parallel rows, the notches in adjacent sheets lying in different rows. The system includes a light tight dispenser which receives the envelope and is capable of being operated to strip the envelope from the film sheet stack. The dispenser includes a pair of rotatable selector cams, each aligned with a different row of notches. A spring mounted back-up plate urges the film sheet stack against the selector cams with the two selector cams respectively bearing against notched and unnotched portions of the top sheet.

Abstract: A device for mounting on a machine to allow the machine to be used as a saw comprises a member for securing to the machine. A tension spring is connected to one extremity of said member, the other end of the tension spring connected to one end of a saw blade or wire. The device comprises also means connected to the other end of the saw blade or wire and for connection to a spindle of a motor of a machine and for converting rotary motion of the spindle to reciprocating rectilinear motion and imparting the reciprocating rectilinear motion to the saw blade or wire.

Abstract: Apparatus for cutting sheet material unwound from a roll supported adjacent a cutter, the cutter comprising a stationary cutting member and a distinct movable cutting member adapted to cut material placed between the cutting members. The stationary cutting member is mounted on a support which can be affixed to a wall or supported on legs on the floor, and the movable cutting member is guidably supported for longitudinal travel along the stationary cutting member on which it rides to effect cutting of the material.

Abstract: A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit, and such assembly includes means by which such assembly is retained together, especially during handling away from the frame of the punching device. To this end, the sleeve has a circumferential groove in which there is a radial aperture, and a retainer member is disposed in the groove and has a portion that projects radially through the radial aperture into an elongated recess in the punch body.

Abstract: An apparatus for making relief cuts on prescored glass sheets is disclosed, having an elongated beam extending above the previously scored glass pane; a horizontal, pressure medium operated cylinder and piston unit disposed on the beam and extending substantially over the entire length thereof to advance the cutting wheel to a starting position adjacent the previously scored outer contour of the pane, and then to effect the relief cut; a cutting head which bears the cutting wheel and can be displaced horizontally by the horizontal cylinder and piston unit; a vertical, pressure medium operated cylinder and piston unit disposed in the cutting head for raising and lowering the cutting wheel out of and into its working position, and a control system for the controlled, automatic operation of the cylinder and piston units.

Abstract: A perforator of the kind having a die and a slidable punch for piercing holes in sheets of paper or similar documents intended to be placed in a file or binder with openable rings. The perforator is constructed so that it can be temporarily fitted to each ring of the file or binder for the purpose of piercing a hole accurately aligned with the ring.

Abstract: A press frame includes upper and lower arm portions forming a recess therebetween for receiving a workpiece that is supported by a worktable mounted on the lower arm portion. A ram housing is supported at the front of the upper arm portion and is provided with a ram punch connected to a power source for reciprocating the ram toward and away from the worktable. A swing arm is connected to the upper arm portion in the recess of the press frame by a vertical shaft and is arranged to pivot in a horizontal plane with respect to the upper arm portion with the shaft. A tool holder is releasably engaged to the end of the swing arm by a locking device and is provided with a vertical bore for receiving a punch tool.

Abstract: A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit, and such assembly includes means by which such assembly is retained together, especially during handling away from the frame of the punching device. To this end, the sleeve has a circumferential groove in which there is a radial aperture, and a retainer member is disposed in the groove and has a portion that projects radially through the radial aperture into an elongated recess in the punch body.

Abstract: A Punch and Stripper Assembly for use in a punch press includes a punch with a shoulder at an intermediate portion thereof, a head threaded onto an end of the punch for being engaged by the ram of the press, a compression spring engaging the head, a washer engaging the opposite end of the spring, a retainer acting between the punch shoulder and the washer, and a stripper sleeve for acting between the workpiece and the retainer, whereby the position of the head on the punch provides a preload to maximize spring life, as well as to control the effective height of the assembly with respect to the ram. With this assembly, no special tooling is needed to assemble it. The retainer can be inverted to alter the retractive position of the punch shoulder. .Iadd.