Abstract: A hand operated cutting apparatus and method of cutting mat board, glass, and other related sheet-like framing material. The apparatus has a cutting head assembly which includes a plurality of interchangeable and adjustable blade holding units. Each blade holding unit provides a different type of cut, such as a beveled, straight edge, or V-groove cut. Most of the blade holding units are intended for use with mat board, but some can be used to cut and trim sheet-like glass or plastic framing material. Each blade holding unit is also capable of vertical adjustment relative to the workpiece so that various depths of cut can be provided. The method of cutting a mat board permits the mat board to be positioned face up on the base board of the cutting apparatus and does not require flipping or taping of the mat board during V-groove cutting operations.

Abstract: The present invention relates to an improved surgical stapler that prevents refiring of a spent staple cartridge. More specifically, this invention includes a simple, inexpensive mechanical locking mechanism which prevents refiring of a spent staple cartridge by blocking the path of the firing and/or cutting means of the stapler.

Abstract: The circular saw mill has an engine driven circular saw on a carriage. The carriage has a table that catches the sawn lumber and caries it back to the operator. The saw mill is laid out so one man can operate the mill, which eliminates the necessity for extra help. The set works for the saw mill has a hand lever at the operator station so the operator can advance the log towards the saw, controlling the thickness of the board to be cut. The log is held in a position for cutting by conventional dog asssemblies. The carriage is moved by a conventional chain and sprocket mounted on a hydraulic motor powered by a hydraulic power unit.

Abstract: A bread slicing machine having blade frames and blades readily removable without wrenches or other tools, clamps between the blade frames and drive mechanism for removably securing the blade frames to the drive mechanism, the clamps each comprising a T-shaped cam stud, a pivotal cam receiving the cam stud, and an actuator handle; cam-engaging members on the blade frames adjacent the cam studs and engaged by the pivotal cams, the actuator handles being shiftable to pivot the cams relative to the cam engaging members to cause the cam studs to secure or release the blade frames. The pivotal cams each have a vertical slot and a cross slot to receive the T-shaped cam stud.

Abstract: A device for cutting a detonating cord having an explosive core is provided. The device includes a detonating cord holding member having a cord holding portion, such as an aperture or recess, configured to closely receive the detonating cord so that the detonating cord is held in place relative to the holding member. The cord holding member also has a side surface from which the detonating cord projects when the detonating cord is held in the cord holding portion prior to cutting. A blade arm is pivotally mounted to the cord holding member. The blade arm carries a sharpened blade and is pivotal between an open and closed position. The blade passes over the cord holding portion in close proximity to the side surface so that the detonating cord is cut by the blade as the blade is passed over the cord holding portion.

Abstract: A safety device for a power saw, such as a miter saw, includes an interference stop mounted on the frame or other support of the saw. The stop prevents a lower pivotal blade guard of the saw from being pushed away from a covering relationship with respect to the saw blade when the saw is moved from a "cutting" position to a fully raised "home" position, thereby preventing accidental exposure of the saw blade.

Abstract: A tape end trimming apparatus for appropriately cutting and shaping the ends of plural tapes of different widths without wasting the tape and without requiring replacement of the cutting blade is provided. The tape end trimming apparatus comprises cutting for trimming the corners of the end member of a tape. A guide member comprises tape insertion path for guiding an inserted tape to the cutting apparatus. An end position regulator regulates the insertion position of the tape end. The cutting apparatus comprises cutting blade for cutting the end corners at the sides of tape with the position of one side thereof regulated by one tape side position regulator and the position of the end thereof regulated by end position regulator, and the position of the other side thereof regulated by the other tape side position regulator and the position of the end thereof regulated by end position regulator.

Abstract: Mechanism for connecting a shaving cartridge to a razor handle with bearings to allow the cartridge to swivel about a first axis parallel to the edge of the cartridge blades and the bearings being supported on a linkage to permit the cartridge to rock end-to-end about a second axis perpendicular to the first swiveling axis and parallel to the direction of shaving.

Abstract: An apparatus for cutting grooves in a green concrete slab having at least one terminating side edge transverse to a broad top surface in a low cost manner is described and includes the following elements: a hand-held portable rotary saw, supported on a rollable platform disconnectably connected to and supporting the relative to the green concrete slab. The rollable platform includes a planar base in surface contact with a conventional guide plate of the saw, and flared side walls extending outwardly from the planar base an anchoring portion adapted to receive a human-generated force to provide rectilinear travel along a preselected direction over the green concrete slab. The planar base also includes a slot in alignment with an opening in the guide plate through which the saw blade extends whereby a working plane of reference is defined that intersects an axis of rotation of the saw blade whereby a maximum depth of cut is easily defined coincident with the working plane of reference.

Abstract: A vegetation trimmer attachment head includes a main body, a plurality of elongated blades extending radially outward therefrom, and pins to pivotably attach the blades to the main body. A single pin cover mates with the main body to retain the pins in place. The pin cover is held in place by being interposed between the main body and the vegetation cutting device. The attachment head is simple and can be quickly disassembled and reassembled without tools because it has few parts, none of which are threaded or snap together.

Abstract: A cutter plotter for drawing a roll type cutting sheet and cutting it, prevents bad influences accompanied with increasing of drawing resistance when drawing the roll type cutting sheet from a rolled part. If a feeding amount of the cutting sheet by a cutting order to be executed is over an amount already fed at that time, the cutting sheet is further fed in a Y-direction prior to execution of the cutting order for compensating said over amount.

Abstract: A punch includes a first member and a second member which has two lugs extending therefrom which are pivotally connected to the first member. Two apertures are defined through the second member. A transverse frame is connected between the two lugs and two punching tools movably extend through the transverse frame. Each punching tool has the first end thereof contacting the underside of the first member and the second end of each punching tool extends through the transverse frame and is located in alignment with the aperture corresponding thereto. A first end of a rod rotatably extends through the second member and the first member, wherein a second end of the rod movably extends through the second member. A handle is pivotally connected to the first end of the rod so that the handle is pivoted relative to the first member to extend the distance between the punching tools and the handle.

Abstract: A sheet cutter cuts a portion of a continuous sheet, discharged through a gap between a pair of moving and stationary knives respectively having arc-shaped and straight knife edges. A motor rotates a pair of rotatable, identical gear wheels engaged with each other and opposed to the moving knife and having a pair of respective link arms thereon. Each link arm has a first end connected to a peripheral position of the respective gear wheel by a pivot thereon and a second end connected to the moving knife by a pin inserted into a respective one of a pair of horizontally extending slits in the moving knife.

Abstract: An arbor lock mechanism for use with an arbor of a table saw. The mechanism includes a bearing plate connected to the frame of the table saw and through which the arbor rotates. The mechanism also includes an arbor lock plate connected to the bearing plate and having an upper pivot hole, a central hole and a lower arcuate slot. The central hole includes a lower section through which the arbor extends and rotates and an upper section that has flat edges to secure the arbor in a locked position. The arbor lock plate includes lift portion to move the plate between an open position, where the arbor rotates, and a locked position that secures the arbor.

Abstract: A food slicer for automatic operation having a staged dynamic brake for bringing the slicer carriage to rest at a predetermined location in a smooth manner. A sensor or system of sensors are utilized to detect the slicer carriage location. The sensor output is fed through a microprocessor which controls a dynamic brake which in turn acts upon the slicer carriage. The brake acts upon the carriage in two or more stages, so as to bring the carriage to rest in a smooth manner. The invention may also operate to as to bring the carriage to rest in a predetermined location.

Abstract: A multi-purpose blind cut-down apparatus for cutting a blind having a head rail and closure elements. The cut-down apparatus has a blind holding plate with a blind component opening and a closure element opening for holding the head rail and closure elements in position for cutting. The cut-down apparatus uses a closure element cutting bar moveable relative to the holding plate for cutting the closure elements extending through the holding plate. The cutting bar has an die opening for receiving a cutting die on a cutting die plate. The die opening and cutting die receive the head rail of the blind and cooperate to cut the head rail by moving the cutting die plate relative to the holding plate. The cutting bar moves in a linear path while the die plate moves in an arcuate path, both the cutting bar and die plate are moved by a transmission element moveable relative to the holding plate.

Abstract: A fastening machine (e.g. for rivets) has a fastening head where the fasteners are brought into alignment with the punch and die in a carrier tape. The carrier tape has a web with slits or teeth engageable by a sprocket wheel which sequentially advances the fasteners until the stems engage a retractable stop. When the punch is advanced, the fasteners are pushed through the carrier tape to be deformed by an upsetting die aligned with the punch. In modified embodiments, the fasteners are urged transversely from the web of the carrier tape, the carrier tape being advanced by a gear which engages teeth on a side flange on the carrier tape. The sprocket wheel may be remotely driven e.g. by a flexible cable drive to accommodate the movement as the fastening head is advanced towards, or retracted from, the upsetting die.

Abstract: A tool including a handle, a blade-carrying portion attached to a first portion of the handle and a guide portion attached to a second portion of the handle. The second portion of the handle is movable with respect to the first portion of the handle thereby defining a variable distance between the blade-carrying portion and the guide portion. The guide portion includes a channel defining a longitudinal axis and a blade including two opposing ends and a generally u-shaped portion having a cutting edge thereon. The u-shaped portion is attached between the two opposing ends of the blade and the two opposing ends are pivotally attached to the blade-carrying portion. The blade is pivotable between a first cutting position and a second cutting position with respect to the blade-carrying portion. The blade defines a first cutting direction when in the first cutting position and defines a second cutting direction when in the second cutting position.

Abstract: A cutting-off machine includes a fastening device including a headrail positioning base fixedly mounted on a top wall of a working table and containing a first guiding groove for passage of a headrail, a slat positioning base fixedly mounted on the top wall of the working table and containing a guiding opening for passage of a plurality of juxtaposed slats, and a bottom rail positioning base adjustably fixed on the top wall of the working table and containing a second guiding groove for passage of a bottom rail.

Abstract: A magnetic cutting assembly and waste removal system is provided for cutting a panel from an envelope blank or the like. The die holder has a magnetic outer surface and a plurality of surface orifices therein radially communicating with corresponding feed tubes for supplying vacuum or air to the surface and into the vicinity of the envelope blank. In order to maximize the number of orifices while minimizing the number of magnetic members, the magnetic members are disposed in a plurality of rows wherein each row contains alternating magnets and orifices and a row of orifices are disposed between each adjacent row of magnets, and the orifices are connected to corresponding feed tubes in a matrix.