Abstract: A warp knitting machine has a row of needles, a row of warp thread guides for feeding to the needles warp threads which form the chain stitches of a ground fabric and a row of weft thread guides for feeding to the needles weft threads which form the inlay of the ground fabric. At least one row of pile thread guides is used to feed a respective pile thread to each needle. A row of pile-thread reserve-forming supports is provided, each support being individually shiftable, by a jacquard mechanism, from a reserve-forming position to a reserve-releasing position. The reserve-forming support, when in the reserve-forming position, forms a reserve length in a respective pile thread, by increasing the length of the path which the pile thread takes to a respective needle. Each and every pile thread is provided with such a reserve length in each and every course of the fabric. Each needle is provided with a clamp which clamps the pile thread to the needle.

Abstract: A warp knit machine produces patterned plush-loop warp knit fabric and includes a row of hooked needles, a pillar bar for forming interlaced adjoining chains of the ground fabric and an inlay bar for laying inlay thread into the ground fabric. Each needle has a set of pile-thread guiders swingably mounted between non-selected and selected position. A guide comb structure comprises a row of blades defining first inter-blade gaps alternating with second inter-blade gaps. All pile threads are guided through the first gaps, but the selected pile threads differently located in the gaps. During certain phases of operation, the needles extend through the second gaps, and also a row of pile-thread-laying sinkers pass through the second gaps. The guide-comb structure is shogged to overlap selected pile threads, which the pile-thread sinkers then lay into the needle hooks. Also, the guide-comb structure is so configured that it underlaps the non-selected pile threads beneath the needles.

Abstract: A filtering device for a dry cleaning machine comprising a casing having a door at one end, an inlet conduit means situated in said casing and having a plenty of perforations at a periphery thereof, outlet conduit means at the front or rear part of said casing, a first filter assembly in said casing and spacer means situated between said first filter assembly and said casing. The first filter assembly includes an elongated base member to substantially cover the inlet conduit means and having a plenty of perforations at a periphery thereof, a plurality of flanges detachably connected around the base member and first filter means carried by the flanges to substantially cover the base member. The spacer means includes a porous wall and a plenty of ribs provided at an outer periphery of the wall.

Abstract: Apparatus for washing cellulose pulp including a drum with a filtering member on its outer shell and stationary housings encircling the drum. A pressurized washing liquid is applied against the cellulose pulp which is in the form of a fiber web upon the filtering member and compartments affixed within the drum receive a suspension liquid displaced from the washing liquid. Pure washing liquid introduced against the rotation of the drum is applied against the fiber web forcing suspension liquid to pass through the filter and into compartments under the housing. A valve combines the suspension liquid flow from the compartments and conducts the flow to a supply connector at the next-to-last housing taken in the direction of rotation of the drum. This displaced suspension liquid displaces liquid from the pulp web with flow resistances encountered by the washing liquid between different housings causing pressure differential between washing liquids in different housings.

Abstract: A coincidental lock for a motor vehicle comprises a key controlled lock cylinder mounted in the axial bore of a housing for axial displacement between an outward and an inward position, and for rotation in its inward position into selected operating positions. A lock bolt is mounted in a cross bore of the housing for displacement between a retracted and a locking position for the steering column of the vehicle. A spring biases the lock bolt into the locking position, and a latch member on the lock bolt maintains the lock bolt in the retracted position when the lock cylinder is in the inward position. A driving member operated by the rotation of the lock displaces the bolt against the spring bias into the retracted position and includes a control ring arranged for engagement with the latch member in the retracted position and carrying a cam projecting from the control ring towards the lock bolt.

Abstract: A door lock, in particular a lock for hotel room doors. Actuation of the exterior door handle creates a supply of compressed air which is directed through a coding assembly to actuate a lock release member. The operation of the coding assembly is controlled by a pair of matching punched cards. One of the cards is normally positioned within the lock and the other card is retained by an authorized user for insertion into the lock to operate the coding assembly. Two separate coding assemblies are provided with a hotel door lock, one being for use by a guest and the other under the control of the hotel management.

Abstract: The invention concerns device for the manufacture of blisters with high barrier properties using metal-plastic composite foils which can be deep drawn, in particular an aluminum-plastic composite foil which is clamped firmly in the clamping facility of a device for manufacturing blisters. The process is such that the composite foil is pre-stretched in a first step and then shaped into a blister in a second step.

Abstract: A steel flanged wheel rim includes a pair of hollow ears extending radially and outwardly at the side edges of the rim, a semi-circular recess between the ears and a flange extending radially and inwardly from the center of the recess. The steel flanged wheel rim is produced by plastically processing through a series of shaping rolls in different processing stages and then bending the band into a ring shape to thereby continuously produce steel flanged wheel rims.

Abstract: A taper spring is manufactured by rolling which is achieved by a single-spindle planetary rolling mill having a shiftable upper roll and a planetary roll constructed by a main roll and a plurality of satellite rolls while applying predetermined longitudinal tension to a material by a drawing chuck located at the outlet side of the rolling mill and a pair of relatively movably feed rolls located at the inlet side of the rolling mill.

Abstract: A preferably circular cam driver coupled to one of a pair of pivotally coupled die carrying members and operated by drive means is cooperatively engaged with a cam member coupled to the other of the pair of die carrying members and which, in turn, is rotated by and exerts a force upon the cam driver to selectively move the work engaging portions of the die carrying members into engagement with a workpiece located therebetween.

Abstract: A crimping tool comprising a top plate, a parallel bottom plate, a rigid arm disposed between the plates and being affixed thereto, a movable arm positioned adjacent the rigid arm and having one end thereof pivotally mounted to the plates adjacent one end of the rigid arm, the rigid arm and the movable arm being positioned and formed so that their free ends comprise opposed crimping jaws for allowing the positioning of a portion of a circle clamp therebetween when the arms are in an open position, the top plate having a sufficient width so as to rest atop the open jaws of a bench vise when the crimping jaws are fully opened, the bottom plate having a width no greater than the combined widths of the arms in order to allow the jaws of the bench vise to close against the arms, a spring for holding the crimping jaws open for facilitating the positioning of a portion of a circle clamp therebetween, and an alignment bolt for holding the crimping tool within the jaws of the bench vise whereby the crimping jaws exten

Abstract: Several embodiments and mountings of a vibration sensor are disclosed, all of which are suitable for detecting vibrations diagnostic of a combustion in a combustion chamber of a liquid cooled internal combustion engine. The channel for collection and transmission of these vibrations from the combustion chamber to the sensor in each embodiment includes the liquid engine coolant. In some of the embodiments, the sensor detects flexure of portions of the walls of the existing structure of the engine cooling system apart from the primary rigid structure of the engine. Dimensions of coolant system passages may be modified to tune or emphasize certain frequencies delivered to a sensor. To improve signal to noise ratio of the dignostic vibrations seen by the sensor, portions or extensions of the cooling system may be damped or silenced, or alternatively, damping or silencing may be applied to the entire cooling system.

Abstract: A device for testing, or exercising, or calibrating an emergency governor by disconnecting the overspeed device from the equipment it protects, and driving the overspeed device throughout the entire speed range by using an auxiliary drive.

Abstract: The accurate determination of the fat, moisture, and protein content of salt added meats by means of thermal extraction is complicated by the enhanced fat and moisture binding capability that salt gives to meat proteins. This effect is counteracted by the addition of a controlled amount of acid to a salted meat sample which lowers the pH of the meat proteins below their isoelectric points. In a preferred embodiment, citric acid is mixed with a salted meat sample and the sample is then exposed to microwave energy for a time sufficient to achieve a relatively constant chemical analysis in the residue which is related to the amount of fat and moisture rendered from the sample.

Abstract: Apparatus for determining the stress-strain characteristics of materials in the viscoelastic state, especially polymer melts, in which a bar-shaped test specimen arranged vertically in a thermostable bath is stretched by means of a tape attached to a motor-driven reel and the tensile forces are continuously measured by a load cell arranged below the specimen and within the bath.

Abstract: A method for continuously determining the water and fat content of a material such as butter which involves instantaneous measurements of the density of the substance, as well as either the dielectric constant or radiative backscatter intensity. Signals representing these non-destructive measurements are fed to a computer and compared with values of the same parameters which were previously measured by laboratory destructive tests. The comparison permits a calculation of the composition of the substance, specifically fat and water content. In the case of a salted material, salt content can also be calculated.

Abstract: For checking the rate of delivery of an injection pump for a Diesel engine, vertical vessel is provided having a movable bottom wall formed by a piston-like member: the latter, via a mechanical transducer, reads the displacements of the piston as a function of the quantity of liquid delivered to the vessel by the pump being tested, the stop point being the top level in the vessel. The top level is signalled by a photoelectric device which spots the overflow of the liquid from the vessel top immediately as it occurs. Count-up or count-down means are provided for reading out the displacements of the piston so that, knowing the number of revolutions of the motor which drives the pump being tested, the exact rate of delivery of the pump can be calculated without being disturbed by any external cause of accidental errors.

Abstract: Method and apparatus for timing combustion events in the combustion chamber of an internal combustion engine wherein a piezoelectric transducer is utilized to develop a signal corresponding to the first derivative of pressure within the cylinder being monitored. A signal processing circuit detects that change in polarity of the first derivative signal which occurs at the transition between compression and expansion of cylinder volume during the combustion cycle of the piston. Circuitry is provided for effectively disregarding all other polarity changes or "zero crossings" of the transducer output signal which are not related to the achievement of the top dead center position by the piston within the cylinder. This directly derived indication of a transition from compression to expansion in the combustion chamber is combined with other timing signals for the monitoring or controlling of injection or ignition timing for the engine.

Abstract: A pulsed through-transmission ultrasonic non-destructive inspection of the internal structure in a tire wall is effected. The transmitted acoustic signals preferably have a frequency of least 40 Khz, are transduced to electrical form, amplified with a relatively long time constant AGC, rectified and integrated during only the initial or leading edge portions of each pulse or burst. The resulting integrated analog signal values thus provided have relative magnitudes which may be displayed or otherwise processed to detect structural anomalies within the tire wall. If plural acoustic transmitters are utilized, they are preferably multiplexed such that only a single transducer is activated at a given time.

Abstract: A selectable depth water retriever including a weighted container having a threaded neck thereon which mounts a threaded cap. The cap has an opening formed in the top thereof. A perforated disc is positioned on the top of the neck of the container, and positioned between the perforated disc and a closure disc upon the cap opening is a coil spring which normally maintains the closure disc upon the cap opening until pressure at a selected water depth forces the closure disc from the cap opening to allow water to enter the container. The threaded connection of the cap upon the container allows for adjustment of the compression of the spring which in turn determines at what depth the closure disc is removed from the opening in the cap.

Abstract: A balance beam has a fulcrum, at least one bellows (connected to the source of pressure or vacuum) acting on the beam at a point along its length and a connection to the armature of a differential transformer at one end. A poise is mounted for movement along the beam by rollers riding on shoulders formed on the beam in a unique arrangement. A carriage having a connection to the poise at the elevation of the axes of the rollers moves the poise and is, in turn, driven by an expansible belt, chain or cable extending around two sprockets, one of which is driven by a servo-motor controlled by a circuit including the differential transformer. Careful provision is made for temperature compensation both longitudinally and transversely of the beam yet the drive elements are elastic. The bellows may be moved to different locations relative to the beam by use of pre-drilled holes in the beam and base plate. Two bellows, on opposite sides of the fulcrum, may be used to gauge pressure differences.

Abstract: Gyroscopic apparatus comprises a gyroscopic device having two mutually perpendicular sensitive axes. The device is suspended in a two-axis gimbal system by means of cross-spring pivots of zero stiffeners. The gimbal system is further supported by a subsidiary suspension about two horizontal axes, and the subsidiary suspension carries damping means to damp movements of the gimbal system.

Abstract: In order to eliminate the day-to-day gyro drift phenomena which result from interaction of the magnetic pole position of the synchronous motor typically used to drive the gyro and the gyro wheel, an induction motor controlled by a phase locked loop referenced to an appropriate control frequency is utilized to drive the gyro.

Abstract: The improvement to a low profile pushbutton radio tuner eliminates excessive friction between the mechanical parts thereof by providing loosely mounted cam followers in a mounting mechanism which provides for accurate centering and, therefore, accurate repetitive tuning of stations in response to depressed pushbuttons.

Abstract: A power take-off mechanism which converts rotational motion to a variety of available rotating, reciprocating and/or oscillating motions. The device comprises a rocking frame within which is mounted a rotating shaft on which is mounted an unbalanced weight. One end of the shaft is connected through a constant velocity type joint to a power source and the opposite end of the shaft rotates within a restraining ring or area on the frame. The rotating unbalanced weight transmits force through the shaft to the rocking frame which is free to pivot or move rotationally about one axis and at the same time to reciprocate axially along the same axis. Power may be taken off from various points on the frame as either reciprocating motion, reciprocating motion with a cyclicly reversing twist, circular motion inscribed on a plane of rotation, or eliptical motion inscribed on a plane of rotation.

Abstract: The chain has laminated, laterally flexible link members interconnected by pairs of rocker-joint bearing members. The laminated links freely engage and are retained by transversely spaced notches in the bearing members, which also engage drive sprocket teeth. The chain is manually separable and is designed to operate on the industrially standardized roller chain type drive sprockets.

Abstract: A torque division gearing system is disclosed wherein two pairs of bevel gears are provided with each pair having a large bevel gear and a small bevel gear. One of the small bevel gears is arranged on an input shaft and the other small bevel gear is mounted on a second shaft parallel to the input shaft. Each of the small bevel gears drive the respective two large bevel gears arranged on a common axially displaceable shaft. The displaceable shaft is coupled by a gear stage to an output shaft.

Abstract: A ball screw nut assembly of the type in which a nut having an internal helical groove is telescoped over a shaft having an opposing helical groove and an endless train of balls is disposed in the grooves so that the nut travels axially along the shaft as the latter is turned relative to the nut. Travel of the nut along the shaft is limited by a stop which is mounted on the shaft and engaged by the nut. As the nut approaches the stop, the balls leave the groove in the shaft and roll on a cylindrical portion of the shaft whereby the nut is no longer positively driven and the force with which the nut impacts the stop is substantially reduced. Return of the balls into the groove on the shaft is aided by making the diameter of the cylindrical portion slightly greater than the root diameter of the shaft grooves and by utilizing a resilient stop.

Abstract: A shift mechanism for the gears of a transmission is disclosed having a pivotally mounted bushing assembly. The bushing assembly defines an aperture. Positioned in adjacent, spaced apart relationship to the bushing assembly is means for selectively engaging one of a plurality of gears in a transmission. A shift lever is rotatably positioned in the aperture in the bushing assembly. One end of the shift lever is adapted for drivingly engaging the means for selectively engaging one of a plurality of gears in a transmission, whereby rotating the shift lever selects the gear in the transmission and pivoting the shift lever engages the selected gear in the transmission.

Abstract: A vibration damping device for a mechanical clutch release system comprising a damper weight mounted to an inner cable connected to a release fork by a clevis. The damper weight is provided with an axial bore for receiving the inner cable, two slits formed on diametrically opposite sides of the axial bore, a bolt for securely holding the inner cable in the axial bore and a cylindrical portion provided near the release fork to coaxially encircle the clevis.

Abstract: A steering unit comprised of a housing which has a disc rotatably mounted therein. The disc has a grooved outer peripheral surface and has a push-pull control cable attached thereto. The push-pull control cable is attached to the disc via an inner cable. The improvement comprises a concave portion formed in the outer peripheral surface of the disc. This concave portion extends into the outer peripheral surface of the disc to a greater degree than the groove which is in the peripheral surface of the disc. The inner cable is attached to the disc at the low point of this concave indentation in the periphery of the disc. The inner cable and the concave portion of the disc are connected by means of an end fitting extending between the end of the cable and the concave portion. The end fitting is generally inclined from the groove in the disc into the concave portion whereat a head portion secures the head fitting to the concave portion of the disc.

Abstract: A positioning device with a pivotable positioning member. The positioning member comprises a guide lug spaced from and parallel to its pivot axis, the guide lug having a head portion which may be introduced into an enlarged end of a guideway in a support but which maintains the positioning member parallel to the pivot axis. An abutment prevents the guide lug from re-entering the enlarged end of the guideway. A strip integrally formed with the positioning member has a protruding portion which bears against one side of the support tensioning the strip. The pivotal mounting is afforded by co-operable detents including a pivot pin (e.g. on the support) with a tapered end which snaps into an aperture defined by a pair of integrally formed flexible strips (e.g. on the positioning member). The oblong aperture permits the pivot pin to shift therein as the pointer at the other end of the positioning member undergoes substantially rectilinear displacement.

Abstract: A flywheel includes a cross-ply composite central portion including a plurality of fiber-containing layers and a relatively thick rim portion of circumferentially wound fibers impregnated with a binder. The relatively thick rim portion surrounds the central portion and is of sufficient radial thickness such that the ratio of the outer radius of the central portion to the outer radius of the rim portion is equal to or less than 0.90. The rim and central or core portions are secured together by a relatively large interference fit of at least 0.001 inch per inch of the outer radius of the rim. Such interference fit substantially precludes failure of the flywheel by rim-core separation as would occur in similar flywheels having such relatively thick rims in the absence of the aforesaid large interference fit. The tangential modulus of elasticity of the rim-portion fibers is substantially greater than the corresponding modulus of the core-portion fibers.

Abstract: The invention relates to new and useful improvements in the pivotal movement of the intra-articulate connecting rod used in reciprocating heat engines and positive displacement pumps and compressors. The device described is a small spring which is used to hold the articulating components in the toggled or untoggled configuration during periods when the system is free of dynamic operating loads or static friction loads when the system is not in operation. The purpose of the spring during engine operation is to guide the pivotal movement of the intra-articulating connecting rod and thus provide a smoother and more positive action particularly at low speed.

Abstract: High-low speed rotary drive mechanism for rotatably driving driven elements of a tool, for example a hydraulic chuck, while permitting axial movement of the driven elements relative thereto, said mechanism including a housing, a tubular spindle rotatably mounted by the housing top and bottom walls, drive lugs joined to the spindle inner peripheral wall for driving the driven elements, an axially lower main drive gear fixed to the spindle to drive the spindle, a reversible hydraulic motor mounted on the housing for driving the main drive gear at high speed, low torque, an upper gear mounted on the spindle between the lower gear and the top wall for rotation relative the spindle, an elongated rack having teeth intermeshing with the upper gear for driving the upper gear at high torque, low speed, and a poppet type ratchet assembly mounted by the upper gear to rotate therewith.

Abstract: A differential gear mechanism of the limited slip type is provided. The mechanism includes a clutch, including a plurality of discs (31 and 33), and a cam mechanism including a main cam member (43) and an intermediate cam member (45). The intermediate cam member is splined to the side gear (19), such that axial forces are not transmitted to the side gear. The main cam member (43) defines a set of internal gear teeth (81), engaging an externally toothed member (79) of an acutating mechanism (71). The arrangement of the cam members and the provision of the gear teeth on the inner periphery of the main cam member results in a differential gear mechanism having a substantially reduced "bearing span", combined with a reduced casing diameter.

Abstract: A high torque infinitely variable traction drive has concentric input and output shafts 22, 24 within portions disposed within a housing 12. A cup shaped input carrier 26 is rotatable with the input shaft and carries a pair of pins 46. Planetary members 54 are journaled on the pins, each of the planetary members in turn driving an output gear 62. The gears 62 are in turn interconnected with gearing 76 rotatable with the output shaft. A traction ring 60 is mounted within the housing 12 coaxial with the output shaft 24. The ring contacts an outer spherical surface 58 of the planetary members 54 to establish the rotational speed of the members. Means 82, 84, 102 are provided to axially shift the traction ring 60 relative to the outer spherical surface 58 of the planetary members whereby the speed of the members may be varied. A power take-off shaft 38 may be disposed within the output shaft 24, one end of the PTO shaft being coupled to the inner end of the input shaft 22.

Abstract: The initiation and end of the application of a jolt control system to the internal combustion engine during gearshift operations is matched to then-present operating conditions by determining the engine speeds at which the control is to be initiated and ended as a function of the engine speed at the start of the gearshifting. For this purpose, the initial speed is digitalized and used as an address for a storage which contains the desired values. In a second embodiment, the speed at the end of the gearshift is determined and the values read out from storage are speed increment values which are added to the speed at the start of the gearshifting and subtracted from the speed at the end of the gearshift during downshift operations, and vice versa during upshift operations, to determine the engine speeds at which the jolt control is to be initiated and terminated.

Abstract: An axe sharpening device which comprises an adjustable two piece axe-clamping element having on the upper part thereof a file guide including a base oscillatably mounted on the upper part of the axe clamp with an upper part pivoted thereto and fitted with clamping means holding the file against a pivot pin. Resilient strips are provided on the axe clamping element to securely engage the axe head and to prevent it from slipping.

Abstract: A method for making a cutting tool such as a tap, reamer or the like, in which the entire surface of a soft high speed steel blank is coated with a formation of titanium nitride, heat treated, and then finish ground by conventional means to define the cutting edges.

Abstract: In a power tong of the type used in making up and breaking out threaded connections between pipe sections, the bearing surface between the upper cage plate and the tong top body plate is provided with improved means for reducing friction and other undesirable forces when the cage plate is rotatably driven with respect to the body plate. In a particular embodiment, the upper cage plate is provided with an arcuate groove which opens toward the opposing top body plate. The groove includes guide rollers mounted on vertical shafts for engaging the inner and outer arcuate walls of the groove to guide the cage plate when it is rotated. The groove also includes weight relief rollers mounted on horizontal shafts for providing a gap between the upper cage plate and its opposing body plate to eliminate metal-to-metal friction therebetween.

Abstract: Apparatus for screwing, unscrewing, and handling large bolts such as stud bolts for the cover of the core tank of a nuclear reactor. A circular guide rail is positioned above the periphery of the core tank. A main chassis is suspended from and movable along the guide rail. The main chassis includes two vertical beams and a plurality of horizontal guide beams which extend over the core tank periphery toward the interior thereof. A secondary chassis includes a number of bars which cooperate with the guide beams to permit horizontal movement of the secondary chassis in a direction substantially perpendicular to the direction of movement of the main chassis. A screwing mechanism is vertically movable on the secondary chassis and includes a gripping device for gripping the screw and a jack for compensating for the weight of the screw. A second gripping device can be included for gripping a washer.

Abstract: A special purpose tool for applying torque to a cannister-type oil filter to engage and disengage the threaded end thereof with an engine block. The tool is generally cup-shaped, having an internal surface for engaging the polygonal end of the filter in the manner of a socket wrench. The open end of the tool is flared to a larger diameter than the filter body for catching oil which escapes as the filter is removed, and an internal space is provided to act as a reservoir for the escaping oil. Slots are provided in the lower surface of the tool for receiving a bar to increase the applied torque.

Abstract: There is disclosed a socket retaining ring for use with power driven sockets to fasten the sockets to the plug of the drive tool. The retaining ring comprises a molded, one-piece elastomeric ring having an integral, diametric pin extending from one side substantially across the span of the ring. The retaining ring is used with sockets which have a pinned interconnection to the plug of the drive tool by inserting the flexible diametric pin of the ring into the retaining hole and seating the ring in the peripheral groove about the socket.

Abstract: Vibration of a rotating disc is dampened by means of a pair of weights which respectively lie in inclined tracks and are held against the opposite faces of the disc by the force of gravity.

Abstract: A long-sized wire transfer apparatus for use with a wire cutting machine or the like including a wire feed mechanism and a cutter blade assembly which opens and closes to cut into predetermined lengths a wire intermittently fed in by the wire feed mechanism. The wire transfer apparatus comprises a wire clamping transfer conveyor laterally extending from the downstream side of the cutter blade assembly in a direction at the right angles to the wire withdrawing line, a wire drift conveyor composed of an endless belt extending laterally from the initial end of the transfer conveyor through a slide plate of suitable length along the wire withdrawing line, and a wire collecting device or the like disposed immediately below the terminal end of the wire clamping transfer conveyor.

Abstract: A drive mechanism for the reciprocating meat supporting carriage of a meat slicing machine wherein the carriage supports the meat product to be sliced and moves the meat product relative to a power driven knife, and which includes an endless belt trained over longitudinally spaced apart pulleys, thereby defining upper and lower horizontal belt runs extending between the pulleys, a drive member connected along the belt and having a driving lug mounted intermediate the ends thereof, the driving lug slidably engaging a drive slot formed in a driven bar extending from the carriage, the slot extending perpendicular to the direction of movement of the carriage, and the ends of the drive member being connected to the belt such that the path of the driving lug during the time the connected ends of the drive member traverse the pulleys follows a path substantially longer than the path of either connected end of the drive member, whereby the deceleration and acceleration forces of the driving lug are substantially less

Abstract: A cutter that can be mounted to a workpiece for cutting a cope at a prescribed arc at a selected radius and angle. A support frame mounts a band saw for pivotal movement about a first axis, parallel to the saws cutting flight. The support frame is mounted to a central workpiece clamp for pivotal movement about a second axis that is parallel to the first. The clamp secures the workpiece to the support frame, centered on a plane parallel to the first axis. The saw blade can thus be swung through an arc representing the outside diameter of a second workpiece that is to intersect at a prescribed angle with the clamped workpiece.

Abstract: Apparatus is described for slitting an elongated web of sheet metal to produce a plurality of strips that are retained in the web during coiling by intermittently spaced connections. The connections are formed by partially sheared tabs that are easily broken apart for ultimate separation of the strips. Also described is a slitting cutter configuration particularly adapted to produce partially sheared tabs.

Abstract: A musical instrument for producing slapping sounds occurring at an audibly distinct asynchronous rate. A rigid slat member has a plurality of flexible slat members disposed adjacent thereto on at least one side and connected at one end to form a gripping handle. The flexible slats are increasingly weighted away from the rigid slat member such that when the rigid slat is rapidly accelerated through a swinging motion by gripping the handle the outermost slats will be flexed a greater distance than the inner slats. Consequently, the time for unflexing when the swinging has stopped is greater for the outer flexible slats whereby they strike in a slapping motion at a sufficiently delayed time to be audibly distinguishable.