Abstract: A viewing window for covering an aperture in a hand-held circular saw includes an optically transmissive member adapted to be coupled with the guard. The member is movable between a closed position, wherein the member substantially covers the aperture, and the open position, wherein the member at least partially uncovers the aperture, to allow the cleaning of the member. A structure is provided for biasing the member to the closed position.

Abstract: A gripping apparatus for reel material includes a reel support, a first clamping device and a second clamping device as well as a cutting device arranged between the clamping devices. The first clamping device is spring-mounted along two non-parallel axes so that the paper web can be evenly clamped and cut transversely to the web direction without twisting and formation of undulations.

Abstract: Apparatus for automatic scribing and breaking of semiconductor wafers wherein scribing is performed at a scribing station and the scribed wafer transported in the X direction to a breaking station on an X-Y table. Scribing and breaking of parallel lines is accomplished by transporting the wafer step-wise in the Y direction by the Y table. Rotation of the wafer for scribing and breaking along sets of lines perpendicular to one another is accomplished by a theta table carried on the Y table. An impulse bar is carried by the X table for applying force to the bottom surface of the wafer during both scribing and breaking. In one embodiment, upward movement of the wafer during breaking is resisted by an anvil positioned above the wafer. In a second embodiment, such upward movement is resisted by a vacuum chuck beneath the wafer, to avoid contact with the upper wafer surface.

Abstract: A portable sawmill with lateral and longitudinal stability which includes first and second rectangular end frames, each end frame including two horizontal and two vertical members, longitudinal, horizontal rails slidably connected by brackets to corresponding first and second vertical members, first and second winding assemblies, each winding assembly includes bearings journalling an upper one of the horizontal members, a handle to rotate the upper horizontal frame member, an idler wheel located at a lower end of each of the vertical frame members, and a flexible joining connection for each bracket, the flexible joining connection is engaged about the respective upper frame member and a respective idler wheel and connected at both ends to the respective bracket to move the bracket in both directions up and down the respective vertical frame member to thereby move the rails.

Abstract: A device for severing flexible polymeric tube, pipe, or tubular extrudate, such as flexible light pipe, reproducibly, cleanly, and safely is described. The device comprises a block with two specially aligned cylindrical devices for holding the pipe and a slot between the devices for guiding the severing blade with minimum deviation from its path, and a pivot and mounting upon which a blade in a holder is mounted to give even more accurate and uniform control of the path of the severing action.

Abstract: A cutting guide to be removably attached to any one of a number of hand operated power cutting tools such as, for example, a circular saw for cutting a substantially planar workpiece. The cutting guide includes an L-shaped guide plate having first and second sets of channel ears affixed thereto. First and second position adjustable guide arms are slidable received through respective ones of the first and second sets of channel ears such that the guide arms are arranged in perpendicular alignment relative to one another. The first guide arm is selectively positioned to engage and travel along a side of the workpiece so that the cutting tool moves in a cutting path that is parallel to the side of the workpiece. The second guide arm extends to a point that is spaced from an end of the workpiece so as to move with the cutting tool towards and into engagement with the end of the workpiece to thereby limit the length of the cutting path to the distance from which the second guide arm is spaced from the workpiece.

Abstract: A mitre box having a base and a pair of upstanding spaced sidewalls extending upwardly from the base. Each sidewall has an end edge, a slot in each of the sidewalls, the slots being in angular axial alignment with each other with the slot in one of the sidewalls being in axial angular alignment with the slot in the opposite sidewall, ruler marks on said mitre box substantially parallel to the sidewalls. Notch means are also provided between the two end edges of the sidewalls.

Abstract: Products (2) made of paper or similar materials are cut along predetermined cutting lines in a drawing cut between crossed knife edges while being conveyed continuously in a dense conveying stream in which their main surfaces are orientated substantially perpendicular to the conveying direction (v). For this purpose a counter knife (1) with a guide edge (11) is allocated to each product (2) and the products (2) together with the counter knives (1) are conveyed past at least one cutting knife (5) with a cutting edge (51) having two ends, whereby the cutting edge (51) of the cutting knife (5) substantially lies in the plain formed by the guide edges (11) of the counter knives (1) and forms a cutting angle (.alpha.) with the guide edges (11).

Abstract: A device for positioning sawguides for circular gang saws includes a first shaft rotatable about a first axis, an annular gear having an outer surface and a concentric threaded inner surface and rotatable in a first plane about a second axis, the first plane generally perpendicular to the second axis, the first shaft rotatably engagable with the outer surface of the annular gear wherein rotation of the first shaft about the first axis rotates the annular gear about the second axis, the annular gear journalled on and coaxial with a second shaft lying along the second axis, a collar slidably mounted on the second shaft and adapted for non-rotational longitudinal sliding along the second shaft, the collar having an outer threaded surface concentric with the threaded inner surface on the annular gear for journalled threaded engagement therein whereby rotation of the annular gear by the first shaft causes longitudinal translation of the collar along the second axis relative to the annular gear, first and second pa

Abstract: A device (10) for cutting a material into strips, particularly fabric ribbon flowing continuously along a plurality of such devices mounted on a bar positioned transverse to the direction of movement of the fabric, includes a body (12) coupled to the bar and two electrodes (20, 22) between which is stretched a resistance wire (28). The resistance wire is attached to the electrodes by rivets (30, 32).

Abstract: A converging tube assembly for use with a hydraulic food cutter is provided having a converging tube for the passage of suspended food product and liquid therethrough from a larger upstream inlet end to a smaller convergent downstream outlet end, said tube being formed of resilient material. A circumvolving converging tube flange is attached to and extends radially out from the inlet end of the converging tube. A first flange retaining plate having a U-shaped notch for receiving and holding the inlet end of the converging tube, and for compressive engagement with at least a portion of the downstream surface of the flange is provided, along with a lower cradle support frame for supporting the lower portion of the converging tube.

Abstract: A paper trimmer includes a base and a plate pivotally attached to the base. A carrier is slidably attached to the plate in an elongated slot. A blade assembly includes a blade secured to a blade holder. The blade assembly is received in a cavity formed in the carrier such that a cutting edge of the blade extends below the plate and is received within a channel formed in a cutting region of the base when the plate is disposed over the cutting region. A paper is cut by translation of the carrier along the slot of the plate.

Abstract: A belt-mountable tape dispenser operable with one hand for the retrieval and cutting of a predetermined length of tape from a spool of tape mounted to the dispenser. The tape dispenser includes a frame fabricated from a malleable material to accommodate conforming the frame to the waist of the wearer. Belt clips on each end of the frame releasably mount the frame to the belt. A strut extends downwardly from the frame and rotatably supports a reel upon which the spool of tape can be mounted. A cutter assembly and a cutter shield are removably attached to the strut. The cutter assembly and the cutter shield are adaptable to being mounted to the strut for either a left-hand operation or a right-hand operation. The placement of the reel below the frame prevents the pulling and tearing forces imposed on the tape from dislodging the tape dispenser from the belt.

Abstract: Portable metal drum openers allow the use of a cutting head with a relatively small diameter so that most metal drum covers can be removed without having to beat down or remove bungs in the cover. The cutting head is spring mounted so that the small diameter cutting head will not slip or stall when encountering a kink in the chime. The cutting head is tilted downward in the direction of cutting so that the cutting head would tend to move downward along the chime when making the cut, however, the cutting head is physically restrained from moving downward past a selected chime cutting height. The selected chime cutting height is preferably adjusted by adjusting the position of a shaft collar along threads on a cutting shaft that projects perpendicularly from the cutting head. It is preferred that the drum opener be driven either manually, or by an electric DC motor.

Abstract: A lamination notching apparatus for forming dynamoelectric core laminations with winding slots includes a sprocket and drive belt system connecting an indexer to the drive table shaft of a lamination table. The indexer is driven from a punch drive and has an output sprocket. A coupling unit has a first sprocket and a second sprocket mounted on a common same shaft and connected by a passive clamp unit to produce a one-to-one rotation. Drive belts connect the indexer sprocket to the first sprocket and the second sprocket to the drive sprocket table shaft. The sprockets are formed with a special tooth profile to eliminate tooth-to-belt clearance and backlash with a standard HTD profile belt for precise rotary motion. The indexer is movably mounted for tension adjustment of the drive belt. The passive clamp unit includes telescoped tapered sprocket hubs on a tubular shaft, with a spring-loaded clamp nut and bolt passing therethrough.

Abstract: A moving web is either perforated or cut using a knife cylinder having at least one blade, and an anvil cylinder having at least one raised anvil surface, and preferably a plurality (e.g. about 22) of alternating substantially uniform raised surfaces and depressions. The knife cylinder is substantially continuously rotated, and the anvil cylinder is substantially continuously rotated by a servo motor, which also positively controls the position of the anvil cylinder with respect to the knife cylinder to selectively either effect perforation or cutting of the web, or no perforation or cutting. Position controlling is typically accomplished by substantially constantly and instantly indexing the anvil cylinder in a reverse direction. Sensors may be utilized for sensing the locations of the knife and anvil cylinders and providing that information to a computer controller to facilitate indexing.

Abstract: A punch roll which may be used in existing roll piercing systems. The punch roll has radially oriented punches which cooperate with dies upon coordinated rotation to pierce holes in material. The punch roll features a two-piece construction. The two pieces include an annular ring which is maintained in coaxial relationship with a cylindrical member. In the preferred embodiment, the cylindrical member has axially oriented spline-like recessed portions formed in the peripheral surfaces thereof. The recessed portions are preferably oriented parallel to the axis of the member. In the punch roll annular member, the radially oriented bores provide a close tolerance sliding fit with a first portion of a punch. The second portion of the punch has a larger cross-section than the first and is received in the recessed portion located between the annular ring and the cylindrical member.

Abstract: A disk-type cutting tool having a plurality of hardened inserts that are received in recesses formed in the periphery of a base disk. Each insert has a shank portion that is received in the recess and which defines a shoulder that is in abutting engagement with one side of the base disk. This provides a mechanical interlock and location for brazing operation, and also increases the amount of surface area for brazing to provide a more rigid assembly.

Abstract: Knives (28, 30, 122) are held in tangential, resilient (106, 108) or fixed (132, 136) contact with a surface of an air bar (12-20) or air table (142); so that a web (26) moving on a cushion of air (46) over the air bar or table is cleanly slit into webs (32, 34, 36) of smaller width.

Abstract: A cigar cutter comprising a housing having a cigar tip receiving aperture, a cigar tip cutoff blade having an inclined cutting edge, and a blade mounting slide telescopically fitted to the housing and adapted to be manually operated to move the blade to cut off a cigar tip inserted through the aperture. A guide on the slide engages a guide receiving channel in the housing; the slide is guided to slide into and out of the housing, and to move the blade past the aperture to a fully inserted position. A spring disposed in the channel above the guide biases the slide outwardly from the housing. The blade is mounted on the slide with the cutting edge facing generally away from and at an angle to the guide. When the slide is manipulated into the housing against the bias of the spring, forces exerted on the slide by the blade during cutting of a cigar force the slide laterally within the housing, pressing the guide against the channel.