Abstract: A system is provided for injecting slaughtered animal carcasses with tenderizing solution. The carcasses to be injected are weighed and are conveyed to a plurality of sequential injection stations. A number of injection headers are energized for calculated energization time periods. Each carcass is injected by each injection header with solution that flows automatically for a calculated time period that is directly proportional to the carcass weight. A microprocessor is utilized to provide a separate data storage location for each injection station. Data is provided to each storage location in proper sequence as the side to be injected is conveyed to sequential injection stations. A separate timing means is provided for each injection station, and data from the storage location is transferred to the timing means in sequence as the carcass to be injected is conveyed to sequential injection stations.

Abstract: Apparatus for machine scalping and possibly total pelting of a worked up carcass of an animal such as a sheep which uses a composite roller capable of being machine rotated in at least one rotational direction, the roller having a first portion and a second portion movable with respect to each other so as to clamp before the rolling off of the scalp and to release upon reversal after previous operation the grip on the scalp. The apparatus is actuable so as to cause the phased movements required for first gripping the pelt for scalping and then the release of any pelt removed by the composite roller.

Abstract: An arrangement for carding fibers to produce a fibrous sliver, in which the fibrous sliver is advanced through the nip between two rollers, and withdrawn downwardly from the nip through a compacting funnel in which the sliver becomes formed with a coherent ribbon. The fibrous sliver is withdrawn in a vertical path coinciding with a center line of the nip, or it may be withdrawn in a path which is inclined to the longitudinal end to a center line of the nip. The pair of nip rollers are positioned to receive the fibrous sliver so that the latter passes through the nip therebetween. The spacing between the nip rollers and a guide baffle is arranged to be greater than the spacing between the guide baffle and a pair of withdrawing rollers located downstream of the funnel.

Abstract: An open loop control system is disclosed for controlling the production of a web or sliver on a carding machine so as to have a uniform weight per unit length. A novel sensing arrangement for the card input is disclosed wherein corrections to the input are made at the same mechanical plane and point in the feeding process as where the input is sensed to provide highly accurate control of the weight of the output.

Abstract: An "open" type clamp constituted by a wound over metal strip 1, comprising two radial folds or ears 2-5, whereas a first ear is bent over and is provided with an extension directed along the periphery of the clamp to constitute a sole 4 which extends substantially over the distance separating the two ears. The second ear 5 has an extension 6 which is substantially parallel to the periphery of the clamp and extends as far as close to the first ear 2, comprising at its end a portion 7 bent towards the clamp.

Abstract: Sealing devices are disclosed in which two members are connected through a hinge for clamping and sealing engagement with gathered-together material at the end of an enclosure. The hinge facilitates installation and accurately aligns interacting parts including a projecting structure on one member with an opening in the other, interengageable locking elements on side portions of the members and sealing elements on end portions of the members. The locking elements include a shoulder on one member engageable by a shoulder on a projection on the other, the projection being engageable in one embodiment for release. Additional locking elements are positioned adjacent the hinge connection for reinforcement.

Abstract: A device for securing the ends of a snow chain together which includes a plate with an aperture near one end thereof for engagement by a hook on one end of the chain, and a threaded hole near the other end thereof into which is threaded a bolt with a manipulating head and a shoulder to engage a link at the other end of the snow chain.

Abstract: A tapered, hollow bowl of a well spider fitted to an elongated base member and supporting a circumferential array of well casing gripping slips mounted within the bowl for vertical movement to radially enlarge and contract a circular hole within the center of the slip receiving the well casing is segmented to include a pivotable door which carries at least one of the slips, the door being locked in closed position, but pivoted to open the side of the bowl to permit lateral entry of the well casing through the open door.

Abstract: A combined well casing spider and elevator is formed of a main body having a downwardly tapered bowl inner wall. The main body has an open end wall having spaced apart recessed flanges on either side of the opening. A gate member is pivotally secured to one of the recess flanges and releasably secured to the other of the recessed flanges to close the open end wall when the gate is in a secured position. The gate member pivots laterally when released to permit the lateral entry of a well casing within the area defined by the bowl inner wall. A circumferential array of casing gripping slips are arranged in opposing pairs for vertical and radial mounting in surface contact with the bowl inner wall, the gripping slips forming a circular hole within the center of the array to receive a well casing. The slips are vertically moveable along the bowl inner wall to effect radial enlargement and contraction of the circular hole formed thereby by upward and downward movement respectively to release and grip the casing.

Abstract: The invention is a tube clamp which is used to connect a first pipe to another pipe. The invention can be used, for example, to add a pipe extension to the exhaust pipe used on a car. The tube clamp is made from a plate having a first and second flat portion, each having a hole wherein said holes are equal. The holes are connected by a slot and the plate has first and second flanges surrounding and remote from the hole in the first and second portions of the plate. The plate is transversely bent between the first and second flat portion to a degree to form a connector passage, the plate being bent so that the first and second flat portions are in contact with each other and said holes are substantially coaxial with the first and second flanges directed away from each other. Connector means selected from the group of rivets or welds connects the first and second flat portions. A connector means going through a connector passage connects the pipe flange.

Abstract: The present invention relates to a method and apparatus for firmly securing a formerly cut and removed cranial cap skull section to the base portion of the cranium, after the cranial cap skull section has been cut and removed in the course of an autopsy. To accomplish this, a frictional plug or hook assembly is anchored in the cervical foramen cavity extending downwardly from the base of the skull, and another anchoring assembly is secured to the removed cranial cap skull section. A flexible coupler in the form of an elastomer is operatively attached between said frictional plug or hook assembly and said anchoring assembly anchored in said cranial cap skull section so as to hold with a tensional force the cranial cap skull section firmly in place about the cranium thereby effectively completing the calvarium closure.

Abstract: A shear device for splitting hot metallic bars or billets into smaller forms on a continuous basis, as the metallic bars continuously exit from a mill. The shear device comprises two mechanical complexes. The first mechanical complex is a circular shear for generating shearing stresses in the metallic bar by displacing portions of the metallic bar with respect to adjacent portions thereof, and the second mechanical complex wedges and shapes the deformed metallic bar into separate bars.

Abstract: In a fence structure comprising upper and lower horizontal rails between which fence panels are disposed each of the fence panels is connected to each of the rails by a jointed structure, the jointed structure comprising a resiliently deformable V-shaped lip a first limb of which is presented by the fence panel and the second limb of which has a free edge, with the lip disposed, with the second limb resiliently deformed towards the first limb, within a recess in the associated rail. The lip is in contact with a bottom wall of the recess with a space provided between this bottom wall and the second limb of the lip, the free edge of which is in biting engagement with one side wall of the recess at a spaced distance from the bottom wall thereof, with the first limb of the lip in bearing contact with the other side wall of the recess.

Abstract: A reactor tube for a high temperature chemical reactor having a precisely controllable porosity comprises a plurality of layers of a fabric of a fibrous refractory material such as carbon or graphite cloth. Difficulties connected with the handling of carbon cloth, which has an extremely high coefficient of friction, are substantially eliminated by winding the cloth on a mandrel to form the reactor tube. After winding, the mandrel is contracted, allowing its removal without damaging the inside surface of the tube. Heating elements for the high temperature chemical reactor are also formed by winding carbon cloth on a mandrel. A preferred embodiment of the reactor contemplates that a plurality of such heating elements be positioned radially outwardly of the reactor tube.

Abstract: A method for manufacturing liquid crystal cells is disclosed, in which a pair of large-area glass substrates are put together, opposite to each other and spaced a small distance apart from each other, so that a plurality of liquid crystal cells are integrally formed between the glass substrates, and by splitting the glass substrate assembly, the individual cells are separated from one another. Each of the glass substrates has a plurality of regions defined on the surface thereof to serve as substrate sections for liquid crystal cell units and desired electrodes are formed on the regions. Grooves having a substantially U-shaped cross section are cut along the boundary lines bordering the respective regions on that surface of each substrate on which the desired electrodes are formed, while linear scratches are formed in the surface of the substrate opposite to the electrode-carrying surface, corresponding in position to the U-shaped grooves.

Abstract: An apparatus for simultaneous location and termination of a plurality of stripped conductors in a connector is disclosed. The apparatus comprises a body having a connector orienting cavity, a conductor comb for aligning the stripped conductor, a conductor wiper assembly disposed parallel to said cavity and conductor insertion tooling disposed perpendicular to said cavity.

Abstract: A semiautomatic rotary razor which comprises a rectangular box-shaped framework, an annular cap detachably secured to one surface of the framework and having a reticulate outer blade, a rotary shaft extending across the framework with one end protruding out of the one surface of the framework, an inner blade assembly detachably mounted at the protruding end of the rotary shaft, a fly wheel and a driven gear mounted on the rotary shaft within the framework, a partition wall extending within the framework along the length thereof, a stub shaft extending within the framework adjacent and in parallel to the rotary shaft and slidably received in the framework and partition wall, a driven gear and a transmission gear mounted on the stub shaft and a slidable rack bar having rack teeth thereon for engaging the driven gear on the stub shaft.

Abstract: There is provided a shaving apparatus comprising a shear plate having hair entry apertures and a cutting unit associated with and drivable relative to the shear plate. The cutting unit comprises a cutting member having cutters extending toward the shear plate and respectively associated lead cutters movable relative to the cutters away from and toward the shear plate. The arrangement is such that each lead cutter is always maintained spaced from its associated cutter throughout their respective lengths regardless of their relative position.

Abstract: A razor blade cartridge pivotally mounted in a razor has a sheet-like blade holder with a slot having upper and lower inner inclined walls to one or both of which a single or twin blades are respectively secured by adhesive. A second slot is provided on the leading side of the leading blade. In a second embodiment, a double edge blade has a second cutting edge extending past the back surface of the blade holder.

Abstract: Apparatus for removing weld surplus formed after the aluminothermic welding of two rail butt ends, and incorporating a frame, a first cutting tool secured to the frame and a second cutting tool movable relative to the frame towards the first tool to remove the weld surplus. This apparatus is characterized by the fact that both tools have a cutting edge each with a profile suitable for cutting only the weld surplus on top of the rail head, and the second tool may either be moved horizontally and parallel or perpendicularly to the longitudinal axis of the rail by a hydraulic jack whose body is attached to the frame and whose ram is fixed to the second tool above its cutting edge.

Abstract: An improved rotary power shear that includes an electric motor which drives, through a reduction gear assembly, a rotary shear assembly comprised of a driving shear wheel which rotates against a cooperating driven shear wheel. The design of the tool is characterized by a handle that extends above the motor housing and gear casing, and which supports the tool at one end from the gear casing and at the other end from the rear of the motor housing. In this manner the tool is balanced when held by the handle as the weight of the gear casing and cutting assembly at the forward end of the tool offsets the weight of the motor at the rearward end of the tool. In addition, the design of the tool is facilitated by the provision of a single bracket member that serves the multiple functions of supporting and biasing together the rotary shear wheels, providing a cover for the gear casing, and also providing a support for the stub shafts on which the gears are journalled.

Abstract: A laminate cutting assembly includes spaced upper and lower plates whereby the laminate sheet may be inserted therebetween and cut by a cutter extending through aligned slots in the plates with a movable guide bar assembly having a guide surface in the space between the plates controlling the width of the cut.

Abstract: An improved drafting device for use in association with drafting templates and forms, both the internal and external shapes, configurations and designs thereof; a circular disc having a rim adapted to underlie the internal or external edge of a template, an optional central underside base to minimize pencil and ink interference from movement of the base, openings or slots to permit pencil, pen or blade insertion through the disc so as to mark or cut spaced sets of lines or cuts in the work sheet under the template, an upper central wall on the disc to ride against the template form and an optional outboard flange on the central wall to override and engage the template top face to control disc undersurface contact with the work; improved devices for drawing concentric lines with respect to template inner and outer forms, including both large and small templates.

Abstract: A coiling tape measure which is coiled and stored in a housing. In its uncoiled state the tape has a slightly curved cross-sectional section with a convex lower surface. On its convex lower surface there are one or more closed channels and a device is provided for supplying a pressure medium to said closed channels to effect an increase in the self-supporting capacity of the tape measure. Several embodiments of the channels on the convex surface and several embodiments of the pressure supply device are disclosed.

Abstract: A linear measuring instrument for attachment to a cutting saw includes a rack and pinion gear assembly for unwinding a measuring tape coiled on a rotatable drum. The pinion gears are gear coupled with the axle of the drum, and the rack gear is manually movable for rotating the pinion gears. Therefore, upon depressing the rack gear, the tape is extendable for uniformly measuring long bolts cut from a log, for example. Spaced bearings are mounted on a housing containing the drum and the tape, the bearings being in rolling engagement with the tape during the unwinding for reducing friction between the turns as the tape unwinds, and for otherwise confining the tape within the housing. A variable limit stop arrangement is provided for limiting the extent of rack gear movement and thus limiting the extent of the tape unwound from the housing so that log bolts of different uniform lengths may be cut.

Abstract: Apparatus for detecting whether a measured dimension deviates from a nominal value by a predetermined increment. It comprises a feeler for following the surface of a component and a variable area window controlled by said feeler. Two pairs of photoelectric receivers are located behind the window and the photoelectric receivers of each pair receive differential illumination through the window.

Abstract: A planar pattern making device that fits around a patterned object retaining an indication of the patterned object's surface within the plane of the pattern making device. A pair of opposed symmetric hinged arms are sized so that when closed around the object, they roughly fit the object to be patterned. A plurality of pins reciprocate inwardly from both arms to contact the surface of the object to be patterned. According to the method of the invention, the pattern making device is then latched and the pins are reciprocated to contact the surface of the object to be patterned in a predetermined plane. The arms are released, retaining the indication of the patterned object's contour through the pins.

Abstract: The device for measuring the engagement lead of the thread of a screw-like work piece, such as a hob, for example, includes a spindle for rotating the work piece about an axis, a measuring slider movable transversely to the axis and terminated with a feeler which is in sliding contact with a flank of the thread of the work piece whereby the path of movement of the measuring slider is angularly adjustable, a sliding carriage supporting either the measuring slider or the work piece to impart a relative axial displacement therebetween, a tachometer generator coupled to the axially movable sliding carriage to generate a signal proportional to the speed of the axial displacement, a sinusoidal potentiometer mechanically coupled to the measuring slider and to an angle measuring and adjusting device to adjust the angular position corresponding to the base lead angle of the thread of the work piece, the output of the tachometer generator being connected via the sine potentiometer to the electromotor for dirving the me

Abstract: An electronic control system to regulate heating and cooling cycle temperatures in a clothes dryer drying program. Operation is controlled according to a preselected combination of a heating schedule and a cooling schedule. Provision is made to sense and control according to the temperature of the air used to dry articles such as clothes in the clothes dryer. Provision is further made to give a visual indication of the drying program selected and to cancel the program selected and indication thereof upon completion of the drying program or selection of an alternative program. The final state of the articles being dried is determined by tumbling the articles in the presence of heated force-convected air until the desired state of dryness is obtained and terminating the application of heat and continuing tumbling and forced-convection until the articles are cooled to a desired temperature whereupon said tumbling is terminated.

Abstract: A wear resistant plate is secured to the surface of a refractory grid of a fluid bed apparatus to both improve the wear life of the refractory grid and to serve as a means for retaining the fluidizing air nozzles in place. Anchor bolts or studs are embedded in the refractory material. These can be either embedded in cast refractory during the casting process or in the case of factory fired refractory bricks, T-shaped grooves are formed in the sides of the bricks. Wear resistant plates are then secured to the surface of the refractory by using the anchor bolts and suitable fasteners. The wear resistant plates have openings therethrough which are aligned with but larger than the fluidizing air holes in the refractory grid. The fluidizing air holes through the grid have nozzles positioned therein. These nozzles are secured to the grid by using a fastener arrangement to releasably secure the nozzles to the wear resistant plate or by shaping the wear resistant plate to act as a fastener.

Abstract: In a laundry system including a washer, a dryer, and a water heater, the improvement of using a heat pipe to recover waste heat, whether it be from the hot air exhaust of the dryer or from the conductive losses from the dryer and to transfer that heat to the feed water of the water heater.

Abstract: A vacuum evaporator/sublimator flask apparatus comprises an elastomer cap and a cylindrical glass body. The glass body is a straight-sided cylinder, preferably made of borosilicate glass tubing of sufficient wall thickness to prevent implosion when subject to high vacuum, open at one end and sealed at the other. The elastomer cap is preferably fabricated of clear elastomer in a one-piece molded arrangement which includes an upper neck portion, an outwardly extending sloping intermediate portion terminating in outer downwardly extending walls having an inwardly extending flange at the end thereof to engage the glass body. The neck portion has a tubular opening and a molded-in-place insert at the base of the neck to serve as a stop for rigid tubing that is inserted to permit connection to a vacuum system. The upper portion of the neck includes an inwardly extending portion which engages a vacuum insert.

Abstract: A durable sandal includes a composition rubber sole, a first composition rubber insole, and a unitary leather element including four straps and a second insole section of substantially the same shape as the first insole. Two of the straps having buckles attached thereto are substantially shorter than the other two and extend from one edge of the second insole section. The other two straps extend from an opposite edge of the second insole section. The unitary leather element is aligned with and peripherally sewn to the top surface of first composition rubber insole. The bottom surface of the composition rubber insole is adhesively bonded to an upper surface of the composition rubber sole.

Abstract: Disclosed is a monk style shoe having an adjustable and flexible closure assembly utilizing separable fastening members having separable fastening members having coacting, flexible gripping elements, such as hook and loop Velcro type fastening means, including a fastener strap attached to one side of the shoe and one of the shoe quarters on the opposite side of the shoe elongated and having an opening through which the fastener strap passes. This improvement permits the wearer, using only one hand, to easily pull the shoe uppers simultaneously to the precise desired tautness and fasten the shoe.

Abstract: An attachment for snowplows comprising two sheets of steel, fiberglass, or plastic type material that are curved in contour with the snowplow moldboard and attached thereto in such a manner as to make the snowplow adjustable to various widths.

Abstract: Successive rows of individual pile yarn tufts are secured to a backing fabric with the aid of a pile forming guide designed for assisting in obtaining a more uniform pile spacing and pile height. The pile yarn is threaded onto a needle and each individual pile yarn tuft is individually secured to the backing fabric by penetrating the backing fabric with the pile yarn and securing the same thereto by forming a knot.

Abstract: An improved permanent calendar construction that allows easy removal and rearrangement of vertical date columns and yet prevents their disengagement when, for example, the calendar is tilted forward. Extending horizontally across the date column area or well, there is located at least one lipped horizontal track. Defined in the back wall of each date column are at least two openings or grooves that can mate with the track, as desired. The lip results in a track which extends in more than one straight axial direction and thus engages the groove at least in dual directions (and with the end portion of the track furthest from the back wall terminating in an upwardly and perpendicular direction from an axis perpendicular to the back wall). An example of the preferred embodiment is a track with a right angle lip. Of course, at a minimum, the purposes of the present invention can be accomplished if the track is not lipped and is parallel to or diagonally upwardly directed toward the rear wall.

Abstract: A photograph mount comprising a frame and cover hinged thereto along one edge so that by disposing the cover at an angle to the frame, the structure may set upright on the lower edges of the frame and cover and wherein the frame comprises a back board, an intermediate board coextensive therewith and a face board containing a photograph opening; and a blank for making a photograph mount such as described. This is a continuation of application Ser. No. 779,198 filed May 23, 1977, now abandoned.

Abstract: A decorative plate consists of an outer part having a base with curved sides terminating in a peripheral lip. This part may be suitably decorated. An inner part is formed complementary to the interior of the outer part, and is preferably of a clear material, such as a plastic. On the back of the inner part there is preferably a foil ring. Prior to assembly of the inner part and the outer part, a photograph may be prepared and inserted inside the foil ring. Thereupon the inner part is pressed toward the outer part until the edge of the inner part snaps under the lip. The completed dish may be used as a decorative plaque, tray, ash tray, or for other purposes.

Abstract: A wall mounted telephone index including a housing arranged to be mounted in a substantially vertical position on a wall, the housing having a front opening for access to the interior in which a stack of pivotally mounted index cards are disposed with a pivotally mounted door on the housing for closing the front opening and maintaining the cards in a storage position. A slide selector is mounted on the housing for movement into a selected position for retaining engagement with a selected card so that when the door is pivoted downward manually, the index cards overlying the selected card pivot downwardly to display the selected index card.

Abstract: A modular panel system for making possible easy transportation in compact dissassembled form of a large single plane display surface structure comprised of at least four plastic foam core type panel sections assembled with their edges abutting the edges of adjacent panel sections so that the front faces of the panel sections form the single plane display surface and the back face of each of the abutting panel sections has fastened thereto at support positions with separable and pressure engageable loop and hook fastener elements a support panel overlapping the abutting edges of the associated panel sections so as to firmly bind the associated panel sections and support panel together, and a periphery support member at each of the peripheral edge junctures of the panel sections and likewise having separable and pressure engageable loop and hook elements binding the peripheral edges of the panel sections and the periphery support members together to thereby provide a unitary single plane display structure which

Abstract: An electro-mechanical triggering mechanism for fire arms which comprises a signal receiver used as an input unit which converts a shot-triggering signal generated by the user pulling the trigger into an electrical signal and an electro-mechanical converter which forms an output unit, which unit receives the electrical signal from the input unit and acts on a shot-triggering element to initiate the shot. The improvement consists in that the electro-mechanical converter is an electrically or electro-magnetically deformable piezo-active element which is mechanically connected to the shot-triggering element to initiate the shot. The piezo-active element can be a cantilevered bending bar; a hollow body filled with piezo-active liquid which is capable of moving a piston or elastic membrane; or a bending bar having a series of longitudinally extending bores having electrically conductive walls throughout its middle.

Abstract: This application discloses a bait box of the type having passive circulation of water or air therethrough in order to provide fresh, oxygenated water for fish or live bait stored therein. A collector and a siphon tube are provided for mounting below the water line of the boat. Additional flexible tubing is coupled thereto in order to guide the flow of water between the tubes and a container. The container includes a plurality of compartments through which the water is circulated. Adjustable inlet and outlet devices are coupled to the flexible tubes for circulating the water throughout the container. An air scoop is also provided for oxygenating the water within the container by inserting air under pressure therein.

Abstract: An apparatus for use in monitoring the numbers of a selected species of insect comprising one or more traps into which is put a synthesized pheromone to attract that particular insect. Each trap has a grille comprising a plurality of bars between which is applied a high voltage by means of a high voltage generator, so that when an insect of the selected species tries to enter the trap it touches adjacent bars and is electrocuted by the electric discharge between them. This discharge is detected by a discharge detector connected to the trap and the detector passes a signal to a transmitter which transmits it to a central receiver equipped with a discriminator for ignoring signals other than those from the transmitter and for passing the signals representing discharges to a pulse counter whereby a total of the number of insects trapped in a given time can be obtained at a central station without visiting each trap.

Abstract: The present invention provides a tire arranged to circumscribe a spheroidal construction set joint element of the type having multiple facets located around its periphery each having a joint opening located therein. A portion of the facets circumscribe the joint element around a diametric axis and are arranged in a particularly defined pattern. The tire comprises an annular rim having a width slightly greater than the facets and is fabricated from a yieldable material so that it can be easily stretched for installation onto the joint element. The inner side of the tire includes a plurality of planar engaging surfaces, each having substantially the same shape as the joint element facets, arranged in the same pattern as the circumscribing facets. Accordingly, when the tire is placed over the joint element, the engaging surfaces mate with the facets to prevent rotation of the tire relative to the joint element.

Abstract: The present invention relates to a housing for a solar cell driven motor suitable for use in model toys. The housing typically has an inclined surface to which the solar cells may be applied. The housing may be used to energize a toy mill, radar tower, conveyor, or lever conductor.

Abstract: A thermal-break window of extruded frame members interconnected to form a substantially rectangular frame for encasing a glass panel in which each of the frame members is formed with a channel along its axial length. This channel contains a material of low thermal conductivity hardened in situ and with a strip of the extruded material along the channel being removed, effectively separating thereby each of the extruded frame members into two sections along their entire lengths, representing exterior and interior sections, that remain joined only by the material of low thermal conductivity. Consequently, the exterior frame sections are and remain thermally insulated from the interior frame sections. Furthermore, certain of the extruded frame members are designed to snap-fit to one another, providing for ease and simplicity in assembly.

Abstract: A centerless grinding machine which comprises a grinding wheel, a regulating wheel, a blade and an inprocess gaging device and in which said gaging device includes a pair of feelers each having a contact adapted to contact each one of the wheels and the blade is provided with a rectangular opening or slot having dimensions sufficient to freely receive the contacts so that interference between the wheels, blade workpieces and contacts is prevented. One of said feelers contacts the periphery of said grinding wheel in a peripheral position below by the distance of center height of the workpiece and the other feeler contacts the periphery of said regulating wheel in a position below the position where the first-mentioned feeler contacts the periphery of the grinding wheel.

Abstract: A milling cutter rotatable about an axis and including a cylindrical steel core having helical tapered threads, such as V-shaped threads, diamond grit of a suitable mesh being appropriately secured, as by nickel plating, onto the crests, roots and flanks of the threads, the diamonds being substantially contiguous one another and so related to each other that as the cutter rotates against the work, the individual crest diamonds will first cut the work and eventually break off. Because of the helical pattern, the cutting action will continue, since one of the other diamonds lying in the same transverse plane normal to the axis as the missing diamond will operate upon the work being cut. The loss of the outermost or crest diamonds will expose diamonds in the tapered flanks of the thread to provide cutting points on the cylinder that are operable to cut the work, the flank diamonds traversing the same path normal to the axis of the cutter as the crest diamonds.

Abstract: An improved abrasive flap wheel is comprised of a highly compacted annulus of like-oriented, radially disposed, interleaved coated abrasive flaps and resilient, lofty, non-woven flaps adhesively fastened together at adjacent inner ends. The abrasive flap wheel is made by compressing a stack of juxtaposed flaps of a desired distribution to form a block substantially the same length as the inner perimeter of the annulus, fastening together the ends of the flaps on the surface of the block which will become the inner surface of the annulus and forming the block into an annulus with the free ends of the flaps directed radially outward. The inner ends of the flaps are adhesively fastened together in the process. The degree of annulus compaction is reflected by the compressed thickness of the ends of the non-woven flaps at the inner perimeter which is less than approximately 35% as thick as their uncompressed outer ends.