Abstract: A simple yet complete device to compare molding mitered angles & lengths commonly used in, but not limited to, the picture framing industry. This device will take pair lengths of molding placed bottom surface to bottom surface with the outer surfaces of the moldings located and centered by means of a 2 toned pattern on a plate, with the mitered surfaces abutted against a radiused tab at one end of the plate.

Abstract: The head of a head assembly for a cutting machine defines a first channel oriented at an oblique angle to an axis of movement of the assembly, a slide, mounted for slidable movement in the channel, between a withdrawn blade position and a plunged blade position, and a blade-holding magazine. The slide has a second channel extending substantially parallel to the first channel for receiving the blade-holding magazine, and the slide and head include cooperating mechanical elements for adjustably limiting the movement of the slide to the plunged blade position. Cooperating mechanical components also adjustably limit the depth of magazine insertion into the second channel.

Abstract: The head of a head assembly for a cutting machine defines a first channel oriented at an oblique angle to an axis of movement of the assembly, a slide, mounted for slidable movement in the channel, between a withdrawn blade position and a plunged blade position, and a blade-holding magazine. The slide has a second channel extending substantially parallel to the first channel for receiving the blade-holding magazine, and the slide and head include cooperating mechanical elements for adjustably limiting the movement of the slide to the plunged blade position. Cooperating mechanical components also adjustably limit the depth of magazine insertion into the second channel.

Abstract: A machine for cutting a sheet material incorporates a system for clamping the sheet material against an underlying support surface, which system employs linear arrays of clamp units, each unit including a separate clamping member having a head portion with a flat top surface and a peripheral element constructed to engage an edge portion of the sheet material. The clamping members are disposed in spaced relationship along marginal portions of the support surface, an actuator is proveded for effecting movement of the clamping members between release and clamp positions. Because of the construction of the clamping members, the top surfaces thereof will be substantially flush with the surface of the clamped material being cut, thus enabling a cutting head having an associated glide plate to pass thereover, in contact therewith, without substantial interference or impediment.

Abstract: A system for clamping sheet material against an underlying support surface employs linear arrays of clamp units, each unit including a separate clamping member having a head portion with a flat top surface and a peripheral element constructed to engage an edge portion of the sheet material. The clamping members are disposed in spaced relationship along marginal portions of the support surface, and an actuating device is providing for effecting movement of the clamping members between release and clamp positions. The cutting head utilizes a blade magazine-mounting slide, the travel of which is positively limited and which has a unique pin arrangement for facilitating the interchange of separate magazines adapted for specific cutting modes.

Abstract: A V-nail fastener has a leading edge that is partially formed with asymmetric sharpening, limited substantially to the central sections. Flange elements extend generally perpendicularly to the panel elements of which the central (V-shaped) portion is constructed and cooperate therewith to give the fastener a W-shaped overall profile. The lateral sections of the leading edge, which extend along the flange elements, are substantially devoid of sharpening, or are otherwise so formed as to permit the directional influence of the asymmetric sharpening to occur substantially undiminished.

Abstract: A device for circumscribing selectively both circles and also ellipses of variable proportions includes a housing in which is rotatably mounted an armature. The armature is constrained to move on two axes disposed at right angles to one another, so as to enable elliptical shapes to be generated. One such axis is provided by a rectilinear channel in the base of the device, in which is engaged a follower operatively attached to the armature; the other axis is provided by a rectilinear slot formed through the cover of the device. A hub is engaged in the cover slot and is assembled with the armature; it can be moved to any selected position along a rectilinear axis of the armature without disassembly, and can be secured in position by tightening of a clamping mechanism. In one position the axes of rotation of the hub and the armature are aligned, to thereby cause the device to circumscribe a circle; in other positions the axes are offset, thereby conditioning the device for circumscribing ellipses.

Abstract: A device for circumscribing selectively both circles and also ellipses of variable proportions includes a housing in which is rotatably mounted an armature. The armature is constrained to move on two axes disposed at right angles to one another, so as to enable elliptical shapes to be generated. One such axis is provided by a rectilinear channel in the base of the device, in which is engaged a follower operatively attached to the armature; the other axis is provided by a rectilinear slot formed through the cover of the device. A hub is engaged in the cover slot and is assembled with the armature; it can be moved to any selected position along a rectilinear axis of the armature without disassembly, and can be secured in position by tightening of a clamping mechanism. In one position the axes of rotation of the hub and the armature are aligned, to thereby cause the device to circumscribe a circle; in other positions the axes are offset, thereby conditioning the device for circumscribing ellipses.

Abstract: A push-pull DIY cutter for sheet material, such as mat and foam board, utilizes a blade-mounting handle that is pivotable from a null position in both of two opposite directions, so as to alternatively bring into operative position a blade element spaced to either side of the null position center line. The blade is mounted for lateral shifting, so as to cause the elements on its opposite ends to protrude to a greater or lesser extent from either side of the cutting head. Indicia are provided along the lower boundary of the head to facilitate adjustment of the blade for optimal protrusion of the blade element that is to be utilized in any given instance.

Abstract: A clamp assembly for use in constructing a picture frame consists of two superposed, separate plates. One plate has threaded apertures for the receipt of jacking screws, and the other has recesses for engaging the tips of the screws, the axes of which are offset when the lateral edges of the plates are in mutual registry; adjacent interior edges of the plates are serrated for increased gripping power. Advancement of the screw separates and shifts the plates to move the serrated edges toward one another, thus applying lateral as well as a transverse clamping and gripping forces upon the frame members.

Abstract: A clamp assembly for use in constructing a picture frame consists of two superposed, separate plates. One plate has a threaded aperture for receipt of a jacking screw, and the other has a recess for engaging the tip of the screw, the axes of which are offset when the lateral edges of the plates are in mutual registry. Advancement of the screw separates and shifts the plates, thus exerting lateral as well as a transverse gripping forces upon the frame members.

Abstract: An assembly utilizes a wedge-shaped supplemental base to convert a manual bevel cutter for making straight cuts in sheet materials.

Abstract: A support assembly includes a base having end edges along which extend toothed racks for engagement of a clamping bar having meshing detents on its end portions, the clamping bar providing a guide track for a DIY mat cutter. The base is invertible to present English system and metric system distance-measuring features on its opposite side surfaces.

Abstract: A push-pull DIY cutter for sheet material, such as mat and foam board, utilizes a blade-mounting handle that is pivotable from a null position in both of two opposite directions, so as to alternatively bring into operative position a blade element spaced to either side of the null position center line. The cutter is adapted to slide along a clamping bar and to be reversible thereon, for ambidextrous use and maximum-width border cutting, and different forms of blades can be employed interchangeably.

Abstract: A turret assembly for a cutting head has a glass-cutting wheel and a plastic-cutting blade portion disposed at spaced peripheral locations. Rotation of the turret body brings the cutting elements into their operative positions, and cooperating detent elements ensure reliable indexing of the turret and proper orientation of the leading edge of the plastic-cutting blade portion.

Abstract: Measuring stops for a mat cutting machine are constructed to permit installation without removal of either the shaft on which they are carried or of any element used to mount the shaft on the clamping bar. The stop locking mechanism comprises a pivotable block, which is forced into clamping relationships by a screw assembly; strong locking effect is achieved without overstressing or distortion of the stop body material.

Abstract: A mechanism is provided for circumscribing oval paths, wherein a pivotably mounted element is dynamically oriented so as to maintain a functional axis thereof constantly tangent to the circumscribed path. An orienting arm attached to the mounted element is arcuately reciprocated by an element moving unidirectionally in a circle, the direction of circular movement being opposite to that in which the mounted element proceeds.

Abstract: A pneumatically powered point driver utilizes a valve mechanism having a core that is operated by air conducted therethrough from the supply source. The valve core is preferably provided with an enlarged head, to enhance the rapidity and firmness of the action produced.

Abstract: A machine having a cutting head assembly and a clamping system is provided for cutting shapes in planar workpieces. A pair of separately operated blades are convergently disposed to enable the formation of an edge bevel on the workpiece by cutting it from either side, and also to enable facile V-grooving. The clamping system securely and inobtrusively secures the workpiece in cutting position.