Abstract: The numerically controlled machine tool provided with an automatic tool exchange device and a work indexing device. After the spindle head completely retreats, the preparation for the next tool, the exchange of the tools or the change of the machined surface are carried out. Since the interference region at the time of the change of the machined surface is determined, the tools can be exchanged closest to the work but without interfering with the work. The indirect operation time required for the exchange of the tools and the change of the machined surface can be minimized. When the work has multiple surfaces to machine, the work can be rotated minimum angle in a predetermined direction without interfering with the peripheral device by the indexing device to change the machined surface. The operator can confirm the direction on the display.

Abstract: An attachment of multiple head arm assemblies to an actuator in a magnetic data disk drive system. A leaf spring applies a uniform load against angle surfaces formed on the head arm assemblies. This creates forces on the head arm assemblies to align reference surfaces formed on the head arm assemblies against reference surfaces formed on the carriage. Loads on the head arm assemblies are due to the geometry of the parts rather than on screw torques.

Abstract: A method of manufacturing a circuit breaker comprises the steps of preassembling the movable parts of the circuit breaker between a pair of frame members and providing a housing that is configured for supporting the unitary breaker assembly without attachments. Other circuit breaker components, attached to the unitary breaker assembly, are also supported in the housing without attachments. A cover is secured to the housing to complete the circuit breaker. Another version of the invention preassembles the movable parts of the circuit breaker and the stationary contact mechanism and trip coil, with the line and load terminals attached, between a pair of supporting frame members to form an operable circuit breaker module. The module is in turn supported in a housing without attachments. The circuit breaker module may be tested and adjusted prior to final assembly.

Abstract: A mandrel for use in a vertical-type pipe expanding apparatus comprising a reciprocating member provided above pipes to be expanded and vertically movable by extending and contracting means; an attachment plate provided adjacent to the underside of the reciprocating member, having a predetermined space gap formed on the upper side, and also having a plurality of penetration holes bores through the attachment plate to hold a plurality of pipe expanding mandrels in such a manner as to prevent the mandrels from slipping off in the direction toward their tip ends, when the mandrels are inserted into the penetration holes to extend vertically downwardly therethrough, the proximal ends of the mandrels being capable of projecting through the reciprocating member from below to above; and a pressing attachment removably installed into the space gap and having pressing surfaces formed to make the proximal ends of the mandrels actuatable in match with positions of the pipes to be expanded.

Abstract: A device for removing a winding of an electric linear motor which winding is arranged in downwardly open grooves of a bundle of laminations fastened to a support. The individual strands of the winding are held fast in the grooves on holders. The holders have feet with webs which extend out of the grooves, the feet engaging in mounted position in undercuts in the grooves. The device includes at least one removal device arranged on a vehicle which is moveable on the support, the device having at least one pressing tool and at least one pulling tool coupled with it. The pressing tool has two bevels extending in V-shape to each other which are intended to come against the webs of the feet, by which bevels, upon the downward movement of the removal device, every two webs present on opposite sides of the holder are pressed towards each other.

Abstract: A circuit panel subassembly suitable for use in an eletromechanical apparatus includes a plurality of wires formed within an electrically conductive grid imbedded within a reaction injection molded panel which forms a part of the housing of the electromechanical apparatus. Wires are deployed in a pattern by using a wire organizing frame and the electrically conductive grid and the frame are subsequently imbedded in a reaction injection molded panel. Terminals attached to the ends of the wires remain exposed at spaced apart locations where components are to be mounted. Separate connector housings can be attached to the panel over the exposed terminals and other components or matable connectors can be attached thereto. The entire apparatus can be constructed robotically.

Abstract: An improved circuit board structure and method of forming the same are provided. The circuit board includes an insulating core and has plated through holes connecting the circuitry on both sides and intermediate layers of the core. A permanent dielectric material is applied on at least one surface of the board covering the circuitry and plated through holes. Vias are formed through the dielectric material and signal lines are formed on the top of the dielectric material connected to the circuitry onto the board through the vias. Additional layers of dielectric material with additional wiring and vias can also be formed for multi-level wiring.

Abstract: A multiple-runner intake manifold is constructed of upper and lower parts that fit together at a joint. The upper manifold is molded thermoplastic, and the lower part is molded phenolic. The lower part contains an integral fuel rail. The lower part contains a portion of each runner. Those portions are formed as separate through-passages during molding of the lower part in the cavity of a multi-part mold. The fuel passages are molded as through-holes some ends of which are subsequently plugged by closures and other ends of which receive fittings.

Abstract: A liveload assembly including a stack guide, compressed belleville washers stacked inside the stack guide and a retainer to hold the compressed washers in the stack guide. A longitudinal slot in the wall of the stack guide permits visual checking of the compression provided by the liveload assembly on the gland follower of the valve or pump. The rotary or reciprocating shaft of a valve or pump is liveloaded by placing the liveload assembly over the bolt securing the gland follower to the stuffing box. A nut is threaded on the bolt until it contacts the washers and the retainer removed.

Abstract: A filled supercalender roll is characterized by a plurality of resin impregnated discs that are carried side-by-side on a shaft and form a homogeneous roll body. To make the supercalender roll, a web of woven or nonwoven fibrous material is immersed in and carried through a vat of thermosetting resin to saturate the web with the resin. The resin saturated web is then transported through an oven to partially cure the resin to the B stage, after which the web is cut into a plurality of the discs. The discs are placed side-by-side on the shaft and a collapsible oven is assembled around the discs. The discs are then axially compressed while being heated within the oven to fully cure the resin to the C stage, during which time the collapsible oven decreases in length in accordance with a decrease in the axial length of the axially compressed discs on the shaft as the resin cures.

Abstract: A tool for the exertion of firm, well-modulated, compressional and shear force, ideally suited to the removal of nutshells by hand. An inclined surface moves alongside another surface, creating a V-shaped gap. Such movement will cause materials to be gripped, rolled, and crushed. This pair of surfaces is curved end-to-end around a central axis so that one becomes a circular cylinder, while the other assumes the form of a spiral curve, either around or within the first. One part rotates in relation to the other upon the central axis. The rotary-drum embodiment comprises a spiral curve (20a), the ends joined by a convex arc (22a), the resulting shape extended to form a cylinder. A web (38) spans one end of the cylinder to form a cup (40). The web serves to retain materials (92) being worked (such as edible nuts), as well as to support a central spindle (42) upon which a drum (22a) is turned by means of a key-shaped handle (46).

Abstract: Apparatus and method for grooming and treating natural eyelashes by trimming the eyelashes for regrowth by cutting the eyelashes along a curve corresponding generally to the natural curve followed by the eyelashes arrayed along an eye, with all of the eyelashes in the array being cut simultaneously, so that regrowth of the eyelashes will produce thicker and longer eyelashes of enhanced appearance.

Abstract: An emergency escape tool is proposed for escaping from a car when an accident happens. Scissors for cutting a seat belt and a spike are provided. The spike is held at and retractably protrudes from a handle of the scissors. A tip of the spike is pressed against a window glass. A spike driver is housed in the handle. The spike driver usually urges the spike in the protruding direction. When the spike pressed against the window is displaced inwardly, the spike driver accumulates a compression force corresponding to the displacement. According to the accumulated compression force, the spike is promptly pressed toward the protruding direction so as to break the window glass.

Abstract: A support device for eyeglass frames whereby the contour of one or both rims or surrounds of the frame can be read comprises a plurality of retaining means on a plate and on a flap pivoted to the plate. The retaining means are adapted to hold an eyeglass frame above a hole in the plate. The flap is pivoted to the plate and its inclination relative to the plate is adjustable.

Abstract: An improved miter gauge includes a gauge body and a lead arm pivotally coupled together. The lead arm is provided by a substantially rigid member which includes a plurality of slots formed in a length direction of the member which define adjoining side wall portions of the rigid member. A plurality of threaded bores are provided, each through one of the side wall portions, in communciation with one of the slots. A plurality of set screws are provided in the threaded bores and are adjustable to project out of the rigid member or to span the slot and contact the opposing side wall portions of the member so that overall width of the rigid member of the miter gauge can be adjusted to fit the width of a guiding slot on a piece of power equipment.

Abstract: An inspection apparatus for measuring a surface contour on a workpiece, such as a groove in a pilgering roller die, includes a supporting mechanism for rotatably clamping the die so as to orient the groove thereon in a measurement position, an elongated contact member having a pair of arms with end elements extending in opposite directions, a pair of measurement devices each including a displaceable contact probe and electrical circuitry for measuring the displacement of the contact probe, and a spindle mounting the contact member in a generally vertical orientation and for movement about a vertical axis. End elements on the contact member arms are movable along orthogonally-disposed axes lying in horizontal planes and are respectively placed in contact with a contour of the die groove to be measured and the displaceable contact probes such that displacement of the probes permits measurement of the radius of the groove contour.

Abstract: The invention relates to fine adjustment means used with instruments which have to be finely aimed in a certain direction. The multi-directional fine adjustment unit comprises two discs held coaxially adjacent to each other by connecting means located along the axes of the discs and tilting means for tilting one disc relative to the other, wherein said tilting means are located in a circumferential annular track between the discs, and wherein said tilting means may assume any position along the track.

Abstract: A gauge positioner used for measuring the edge portion of the surface of a workpiece held on a measuring fixture is disclosed. The positioner has a lip which rests upon the corner of the measuring fixture under the workpiece edge. The upper portion of the positioner overhangs, and is spaced above, the lip. A hole is formed through the upper portion of the positioner for receiving the barrel of a measuring gauge and positioning the tip of the gauge in measuring contact with the workpiece.

Abstract: The invention provides a photosensitive material processing apparatus having a processing part consisting of a plurality of processing tanks for processing a photosensitive and a drying part, disposed downstream of the processing part in a processing sequence, for drying the material. The drying part includes infrared drying system and hot air current drying system. There are provided a distinguishing circuit and a controlling circuit. The distinguishing circuit distinguishs the condition of the material either on a constant-drying-rate condition or on a decreasing-drying-rate condition on the basis of physical characteristics of the material. The controlling circuit controls the drying part so as to use the infrared drying system on the constant-drying-rate-condition or to use the hot air current drying system on the decreasing-drying-rate-condition on the basis of a distinguishing result of the distinguishing circuit.

Abstract: A microprocessor controlled clothes dryer wherein the posture of a switch in the lint filter system is monitored and a signal to CHECK FILTER is displayed if the switch posture has not changed. The switched is a reed switch mounted stationary on the lint filter assembly and a magnet operator is attached to the removable filter screen. Movement of the filter screen into and out of filtering position in the lint filter assembly of the exhaust duct changes the posture of the magnet operated reed switch. Change of posture of the switch through its cycle impresses a change of voltage on the microprocessor. The microprocessor effects control over the CHECK FILTER signal that is visually illuminated on a VFD tube; such that, if the microprocessor sees the cycling of the switch the CHECK FILTER signal is extinguished.

Abstract: A shoe and shoe sole for accommodating forefoot strike activities such as aerobics, and forefoot strike tendencies of runners and the like, to forestall stress features, tendonitis and muscle tears, by incorporating a special forefoot pad in the midsole. The pad has a forward chamber and a rearward chamber, separated by an internal wall with restricted orifices therein, the forward chamber being larger and extending curvilinearly beneath the five metatarsal heads of the foot, and the rearward chamber being smaller and extending behind the second, third and fourth metatarsal heads in the arch region of the foot. Impact compression by the metatarsal heads on the forward chamber causes controlled viscous liquid flow into the rearward chamber to absorb impact force, and such that the amount of liquid in the rearward chamber is temporarily greater than its at rest volume, causing the walls of that chamber to bulge and form a temporary arch support.

Abstract: A mobile ballast plow comprises a machine frame and a ballast planing plow vertically adjustably mounted on the machine frame and extending from shoulder to shoulder. The ballast planing plow includes central plow elements extending over the center track portion, and a ballast conveying device associated with the central plow elements and arranged in the center track portion. The ballast conveying device consists of at least one vertically adjustable broom rotatable about an axis extending in the direction of the track, the broom having radially extending flexible ballast sweeping elements, and respective drives for vertically adjusting and rotating the broom.

Abstract: A portable draft bar is demountably attached to a horizontally disposed surface of an earth-working implement that is adjustably disposed on an earthmoving vehicle by providing an elongated draft bar that is adapted at its rear end to be driveably attached to the rear portion of a horizontally-disposable surface of an earth-working implement, such as a front end loader, and which is slidably disposed in a clamp adapted to be clamped to a forward portion of the work surface so as to provide three-dimensional stability and connection of the draft bar to the vehicle for use as, for example, in moving trailers and the like.

Abstract: A compact padding machine for screening and conveying soil into a trench. The machine is usable as an attachment to a conventional bucket loader, bulldozer or other base machine. The padding machine includes a screening belt, an underlying inclined conveyor belt, and a transverse, extendible discharge conveyor belt. Soil is collected and conveyed upwardly on the screening belt. Fine grained soil passes through the screening belt, is deposited onto the inclined conveyor belt, and is discharged therefrom onto the transverse conveyor belt, from where it may be conveyed into an adjacent trench. A hydraulic vibrator is coupled to the screening belt to disaggregate clods of fine-grained soil and cause the soil to pass through the screening belt. Rocks and other large objects are conveyed to the rear of the machine and discharged.

Abstract: An advertising and information display includes a mounting bracket for attaching the display to a conventional retail shelving unit or other structural support, a fixed carrier for holding a relatively small, continuously displayed information medium, and a flexible, user-operable, automatically-retracting carrier for holding a substantially larger, intermittently displayed information medium. The fixed carrier holds a removable user-enticing placard that does not interfere visually or physically with nearby exhibits or products located on that or adjacent shelves. The flexible carrier is preferably a plastic, cloth, or paper sheet which is mounted behind the fixed carrier on a spring-loaded roller or other automatically retracting storage device. A brake preferably controls retraction speed.

Abstract: An illuminated traffic control sign transforms a conventional passenger automobile into a traffic control vehicle. The body of the sign is formed from a flexible sheet of weather resistant material. The sign is ordinarily stored under the luggage compartment lid of the automobile when not in use and is deployed between the open lid and the lower part of the luggage compartment when in use. The flexible sheet has a horizontal double arrow design formed on it in a color that contrasts with the color of the sheet. Electric light fixtures are attached over the double arrow design to illuminate the design when the fixtures are activated. A plurality of flaps are secured to the flexible sheet and may be moved between retracted positions where they reveal the double arrow design or active positions where they cover part of the design. By positioning the flaps, the double arrow design may be selectively changed to a right arrow, a left arrow, or a caution bar without an arrowhead.

Abstract: A safety plug for the firing chamber of a weapon to provide a visual indication that the weapon firing chamber is free of live ammunition. The safety plug includes a cylindrical body having a diameter which is less than the weapon chamber bore. This body is rounded in the preferred embodiment at its forward end portion and fabricated from a non-abrasive material. A tab extends outwardly from the body such that it is visible when the firing chamber is closed to indicate a safe weapon. A button is carried by the rear end portion of the body. This button is preferably fabricated from a hardened material and can be readily engaged by the metal extractor of a conventional weapon for ejecting the plug in normal weapon operation. The plug can be used with a semi-automatic weapon in which the magazine is, or is not, inserted.

Abstract: This invention relates to a variable velocity riot gun designed to give the individual using it control over the velocity of the projectile such that he can effect a sub-lethal attack of projectile impact upon his opponent at will on a shot by shot basis at a variety of target distances and hardness. This is achieved by a gun design including two barrels; a main barrel and a vent barrel. The vent barrel slides forward and back to open and close vents in the main barrel. For minimum projectile velocity the vent barrel is disposed fully to the rear with all vents open. When the vent barrel is disposed forward, all vents are closed to produce maximum projectile velocity.

Abstract: A device for loading black powder, a projectile, and optional components into the muzzle of a muzzle loading firearm. The device includes an elongated tubular cartridge for holding the components to be loaded; a cartridge receiving housing for placement of the cartridge relative to the muzzle; and a plunger for insertion of the components into the muzzle. The cartridge has a central bore, substantially equal in diameter to the bore of the firearm, and preferably is transparent for viewing of the components therein. A crimp or frangible membrane serves to close one end of the cartridge and the projectile closes the opposing end. The cartridge housing includes a slotted portion for receiving and holding the cartridge and is provided with end apertures, aligned with the base of the cartridge for reciprocally receiving the plunger. The housing preferably includes a jacket for fitting over the end of the muzzle for perfecting alignment of the muzzle and cartridge bores.

Abstract: A substantially hands-free operated device for coating fishing lures and tackle with a fish attracting scent. A container with a cover which is raised by pressing a foot pedal contains portions of a resilient, absorbent material. The material holds a fish attracting scent absorbed therein, which scent is transferred to fishing tackle placed within the container and the cover closed thereon. A protecting mechanism is provided to prevent the closing of the cover from damaging a fishing line.

Abstract: An elongated, upwardly opening V-shaped trough for measuring fish. The trough has spaced apart indicia at measured intervals from one closed end of the trough for indicating the length of a fish placed in the trough. Auxiliary indicia are placed at appropriate distances along the trough to signify the legal limit for various species of fish likely to be encountered by a fisherman.

Abstract: An electronic ice fishing system provides an enhanced alert to a fisherman of a fish strike. The electronic ice fishing system comprises an electric circuit with a radio transmitter and a magnetic reed switch encased in a weatherproof housing. The housing is attached to the frame of any of a number of conventional type fishing tipups. A ferrous plate is bonded to the housing proximate the magnetic reed switch inside. A magnet is placed on the ferrous plate, and the magnet actuates the magnetic reed switch to an open state. The magnet is tied with a cord to the flag alert of the tipup. When a fish strikes, the flag alert trips and pulls the magnet from the plate. As a result, the magnetic reed switch closes, and the radio transmitter is energized to signal a pager carried by the fisherman, who can be at a substantial distance and out of sight of his tipup. In a modified embodiment, the magnet and the plate are inverted.

Abstract: A snagless fishing lure for attachment to a fishing line. The fishing lure includes a decoy body with an attached base. A fish hook having first and second hook members and means for urging the hook members away from one another is attached to the base. A depressible trip lever is also pivotally attached to the base. The trip lever has an elongated lever arm with a first end movable relative to the base member and a second end opposed to the first end. A hook contacting member is contiguously attached to the second end of the elongated lever arm. The hook contacting member has a central longitudinal junction and a pair of flanges depending therefrom. When the fishing lure is cocked for operation, the first and second hook members are retained behind hook retaining flanges perpendicular to the base. The hook contacting member is interposed between the base and the retained hooks.

Abstract: A fishing lure especially adapted for trolling type fishing is disclosed. The lure comprises a generally cylindrical body, a skirt, and chum-dispensing means for dispensing chum through the body. The lure body face and body are so designed as to cause the lure to pitch, roll and yaw as it is pulled through the water, thus emulating a sick or injured fish. The lure thus appeals to the fish's sense of sight, smell, hearing, taste and touch.

Abstract: A method of applying a design, such as a simulated live fish design, onto an artificial fly body includes the step of applying a base layer of lacquer over the entire primed exterior surface of a buoyant artificial fly body. A first overlay of a lacquer is applied in a predetermined pattern, i.e., stripes, dots, etc., at predetermined discrete locations on the artificial fly body while the base layer is still wet. While the first overlay of lacquer is still wet, a second overlay of a lacquer is applied over the first overlay. The second overlay mixes with the first overlay of lacquer and flows outward from its point of initial application to a boundary spaced from the edge of the first overlay. A peripheral edge portion of the first overlay remains exposed around the second overlay. Finally, a clear layer of lacquer is applied over the entire artificial fly body after all of the overlays are dry.

Abstract: There is disclosed a novel fish hook assembly comprised of a hook body having an eye, a shank and a curved bend terminating in a tip and a sleeve of material disposed on the curved bend of the hook body proximate the tip, preferably in an area of reduced cross-section.

Abstract: A mushroom cultivation apparatus includes an air suction fan or a vacuum pump which suctions air in all or part of an incubation chamber, a budding chamber and a plurality of suppressing and growing chambers, which are required for cultivation of mushrooms, to reduce pressure in the chambers so that concentration of carbonic acid gas in a cultivation bottle in the cultivation chamber, the budding chamber and the plurality of suppressing and growing chambers is reduced to a predetermined concentration or less, preferably to a 15% concentration or less. Thus, carbonic acid gas in the cultivation bottle is forceably exhausted to adjust the concentration of carbonic acid gas in the cultivation bottle to an optimum condition.

Abstract: There is provided a netting produced from polymeric fibers, for use in fences for plant protection preventing invasion for insect pests, which netting has rectangular openings of from 0.25 mm to 0.35 mm in one dimension, and from 0.4 mm to 1.0 mm in the other dimension, with an open area of at least 40 percent of the area of the netting, the fibers having a diameter of about 0.2 mm to about 0.35 mm. The invention further relates to a method of crop protection, preferably against Bemisis Tabaci, where plots of land on which a crop is grown are surrounded by a netting as defined above. Also other insect pests are prevented from passing through such netting and from entering such cultivated plots.

Abstract: The present invention is to provide a seeding and seedling growing sheet and a seeding and seedling-growing method comprising using the sheet, which are to be used for seeding and growing seedling of grain, vegetable, flower and the like, and which are suitable for efficiently seeding at a desirable position and a desirable density with a higher positional precision and for promoting the growth at germination, by employing the seeding and seedling-growing adhesive sheet comprising a sheet support body composed of water-soluble or water-dispersible paper or water-soluble polymer film, an adhesive agent containing a powdery ferromagnetic substance being coated in spots or in stripes on the support body, and by applying the seeding and seedling-growing method comprising using the adhesive sheet.

Abstract: An automatic self-watering system for plants growing in a container includes a water receptacle above the level of growing medium in the container. The water container may be of any appropriate shape, and may be attached to or located adjacent an upper edge of the container. Alternatively, the water container may have legs resting on or inserted in the growing medium, or may be hooked onto the edge of the container. The water receptacle may be formed separately from or integrally with the container. A conduit for transporting water is connected to an outlet in the side or base of the water receptacle and the conduit is engaged with a dryness sensor inserted in the growing medium in the container. The dryness sensor automatically closes the conduit when the growing medium is adequately irrigated, and opens the conduit to allow water to drip onto the growing medium when water is needed.

Abstract: Plants are hydroponically grown in a cellular water table provided with divergent grow lines along which plants are moved in plant holders. The grow lines are arranged to provide spacing between adajcent rows of plants as plants mature. Within each grow line is a variable pitch screw arrangement which provides for increased spacing between adjacent plants in a grow line as the plants mature. Four-way spacing is provided for both the leaves of the plants and their roots as the plants are suspended over the cellular water table. Maintenance of the system is facilitated by a crawl space beneath the water table which allows access to removable bottom panels of the individual cells within the water table. Plants are cultivated and serviced from the top by a man carrier system. CO.sub.2 enriched air and/or pesticides are supplied directly to the undersides of the plants by a conduit system provided within each grow line.

Abstract: A valve operating structure for a working vehicle having different control valves with slide spools extending parallel to each other. A control lever is operatively connected to an interlocking member for selectively operating the control valves. The valve operating structure comprises an interlock switching mechanism for moving the interlocking member between a position to engage one slide spool and a position to engage another slide spool. The interlocking member is pivotable about a point located at substantially the same distance to the two spools, with a free end thereof extending to a position between the spools. The two interlocking positions are selectively provided by connecting the free end to one of the spools.

Abstract: A counterbalanced operator for a pivoting unit includes a housing 17 and a rotatable drive member mounted in the housing. A first end 29a of arm member 29 is operatively connected to the drive member. A second end of the arm member is operatively connected to the pivoting end of the unit and a torque from the unit is transmitted to the arm member. A crank 33 rotates the drive member. A spring 40 provides for a means for counterbalancing the torque on the arm member. The spring 40 creates a force, the spring operatively connected to the arm member and the spring positioned in the housing. The force is transmitted from the spring to the arm member.

Abstract: A specular machining apparatus for giving a specular machining or mirror-like surface to a peripheral edge portion, in particular a chamfered portion, of typically a semiconductor wafer such as a silicon wafer. This mirror-like surface is provided to smooth out the relatively rough surface formed by etching to remove a strained layer which is generated as a result of grinding work. The mirror-like surface tends to reject the attachment of dirt, which is desirable. The specular machining apparatus is of simple construction and easy to use, comprising a chuck table plus chuck means for holding a wafer having a chamfered peripheral edge portion. The chuck table rotates the wafer held by the chuck about the wafer axis. A polishing ring is disposed to be freely rotatable around an axis perpendicular to the axis of the wafer on the chuck table, to permit the polishing surface on the outer periphery to be accessable for polishing.

Abstract: A vertical glass edger is modified to edge a circular piece of glass by driving the circular piece of glass in contact with a grinding wheel of the vertical glass edger. The vertical glass edger is modified to include a removable pressure roller assembly, drive roller assembly and an idler roller assembly which are used to bias circular glass toward the grinding wheel in a stabilized manner. The attachment provides flexibility in edging circular glass of a diameter of 16 to 72 inches.

Abstract: A numerically controlled machine tool, such as a grinding machine, is capable of machining a workpiece with a precise dimension by measuring a workpiece machining dimension and/or a tool length. According to one aspect of the invention, when the machining operation is provisionally terminated, a machining dimension of the workpiece is measured without dismounting the workpiece from a table. If a machining error is detected, the workpiece is further machined to a target dimension to thus eliminate the machining error. According to another aspect of the invention, the grinding surface of a grinder is subjected to dressing or truing, and the length of the grinder reduced through the dressing or truing is detected to determine the actual length of the grinder. With the known length of the grinder, the feeder amount of the grinder with respect to the workpiece is set for the subsequent machining operation.

Abstract: Operation of a blasting hose is controlled safely and efficiently by the operator at the nozzle by means of a switch-controlled circuit housed at the nozzle and connected to circuits at the blast pot by means of a three-wire cable arranged to stop operation of the blast pot if a main switch held by the operator is released by the operator. The switch-controlled circuit includes a tone generator to produce tones correlated to changing the mix of blast agent and air, as well as cutting off the supply of either or both.

Abstract: The present invention relates to a apparatus and method for sharpening rotary tools which includes a base for supporting a housing and a slidable table. The housing includes a motor which drives a grinding wheel located at the end of the drive shaft. A sleeve is pivotally mounted on one end of the slidable table. A toolholder which holds the tool to be sharpened is placed and is slidable within the sleeve. A spiraled cam is attached to the toolholder. A guidepin, supported by the sleeve, rides within the spiraled groove of the cam to rotate the toolholder such that the tool will be sharpened along a spiraling blade. A pointer is supported by the sleeve for marking each successive point at which the tool will strike the grinding wheel as the toolholder is advanced within the sleeve toward the grinding wheel.

Abstract: Disclosed is a new and improved method and apparatus for automatically lapping a ball and a seat of a valve to produce a non-flat lapped sealing surface finish that provides a reliable fluid seal at minimum cost. Either the seat or ball is rotated as the work piece by the apparatus while in contact with the surface of a lap member which may be the mating seal part. The lap member is held or maintained in a desired angular or tilt relationship with the work piece. A controllable force spring is provided to maintain the desired lapping force between the work piece and lap member. While the lap member is blocked from rotation about the tilt angle and apparatus swings or oscillates the lap member about the work piece to maximize the effectiveness of the lapping contact.

Abstract: A swingable dust hood is provided for use in the dust removal system of an endless belt type working machine. The dust hood has a jet air cleaner positioned on an inner wall which blows dust and other particles off the workpiece for exhaust via an outlet connected to the dust hood. A pivot rod is fixed to the outer shell of the dust hood and is rotatably journalled in a pivot receptacle bracketed to the machine support table. The hood can accordingly be positioned in three primary positions; namely, a first position wherein the hood completely encases a roll when the workpiece does not extend past the form platen; a second position wherein the hood partially encloses the piece when the workpiece is extended past the platen; and a third position wherein the hood is swung back to completely expose the drive roll to permit changing or repair of the endless belt and/or the roll.