Abstract: A cooling arrangement, especially but not exclusively suited for cooling rolled stock such as wires and bars, has two end members provided with axially aligned passages through which a workpiece can travel. The end members are connected by an annularly arranged series of bars between which spaces are left free so that cooling fluid admitted into contact with the workpiece can rapidly flow off again. The space surrounded by the bars converges in the direction of travel of the workpiece.

Abstract: A rolling mill arrangement is disclosed in which a basically six-high mill has intermediate rolls which have no necks and are supported laterally by side support roller assemblies, and in which the work rolls are also laterally supported, whereby higher torque may be delivered to the mill to obtain heavier reductions without lateral flexure of the intermediate rolls.

Abstract: This relates to the handling of thin soft temper material during the feeding thereof and in formation of such material into individual components in a punch press. Most particularly, a pull tab formed of a plastics material-aluminum foil laminate is being formed. In order to control the movement of the stock through the punch press, the stock is longitudinally stiffened by the formation of longitudinal ribs therein. The ribs are preferably formed by the stock feeding mechanism. The work product is blanked and formed substantially in its entirety in regions of the stock outside of the stiffening rib areas and prior to the final severing of the work product from the stock, the stiffening ribs are flattened. In the separation of the work product from the stock, there is material removal in a punching operation along the areas previously containing the stiffening ribs.

Abstract: Pressure test apparatus for testing heat exchanger tubing is disclosed, and the preferred embodiment includes pressure inlet and pressure outlet means for connecting to the open ends of heat exchanger tubing. The apparatus utilizes a quick disconnect mechanism for tubing which is pressure actuated by introducing water under pressure, the water flowing into the tube and maintaining continued pressure to thereby test the tubing for leakage. For fitting around the end of the tubing, the invention thus discloses a surrounding cylindrical body which is counterbored to an internal cavity which receives a set of collets which surround the end of the pipe. The collets collectively are abutted by a pressure transmission ring at the end, the ring being exposed to the water pressure. As the water pressure increases, the collets are driven into a wedged position, jamming against the pipe to be held in the test apparatus.

Abstract: An apparatus capable of determining the clotting time of blood, without requiring continuous inspection of the sample, is disclosed. The apparatus includes a support frame, which is capable of supporting therein a syringe containing a blood sample, and a turntable adapted to rotate at a known rate of speed. Blood from the syringe drops onto the turntable, the clotting time being automatically and graphically depicted by a chart rotatively carried upon the turntable. The apparatus can also be employed for determining variations in the viscosity of blood plasma and other fluids.

Abstract: Means for conducting a blood sedimentation rate test in the primary blood collecting vessel. The invention provides a plunger for said primary blood collecting vessel, a calibrated measuring tube connected to said plunger, and pressure actuated, normally closed valve means in said plunger operative between the blood collecting vessel and the calibrated measuring tube. In the operation of this device, blood is transferred directly from the primary blood collecting vessel to the calibrated measuring tube without intermediate handling.

Abstract: A load cell for measuring the rolling resistance of a tire as a function of a load placed on the tire. The cell includes a block having major parallel surfaces and a centrally disposed opening through which a shaft coupled to the tire rotates. An inner hub surrounding the opening and an outer hub are connected by a plurality of beams. Each beam is defined by a first pair of bores on the periphery of the inner hub and a second pair of bores in the outer hub. The first pair of bores are connected by a recessed web portion, as is the second pair of bores. The thickness of the first web portion relative to the major surfaces of the block is greater than the thickness of the other web. A first strain gage in one bore of the second pair and a second strain gage in the other bore of the second pair sense the rolling resistance of the tire along one axis and the loading force applied to the tire along another axis, respectively.

Abstract: A multiple sensing device has sensors, mounted on a common rotatable shaft, for sensing magnetic field, electric field, gas flow, angular acceleration and linear acceleration. The latter three of the sensing devices employ piezo electric crystals as the sensors, while the magnetic field sensor employs a pair of rotating coils and the electric sensing device employs a pair of rotating electrodes.

Abstract: A thermal fluxmeter is disclosed, comprising a sensor or pick-up incorporating at least one interconnected series of thermocouples, the sensor comprising a board or plate-like element having metallic plating applied to both sides of the element and to the interior surface of the orifices, the plating being divided into local areas and being formed of different metals in different areas thereof to provide thermocouples having low temperature and high temperature junctures at opposite side faces of the sensing element, which junctures are interconnected by plating within the orifices.

Abstract: A vortex shedding flowmeter assembly which utilizes at least one vibrating body that is positioned in relation to an upstream facing vortex forming plate so that vibration of the body caused by vortices formed at the edges of the plate is enhanced. The body is separated from the plate so it will vibrate without causing vibration of the plate. The vibration body may be split transversely generally in the midsection of the body so that the body forms two cantilevered portions.

Abstract: A fluid flow sensor for measuring the conditions of pressure and/or velocity of fluid flow in a passage and which has the capability of averaging measured pressure and/or velocity of flow across the width of the passage.

Abstract: Marine detection apparatus includes a sound transducer mounted below the water line of a vessel for emitting and receiving sound signals and imperviously sealed within a transducer housing together with a temperature detector for sensing the temperature of the water. A display is provided capable of displaying water depth and water temperature. The water depth reading is proportional to the elapsed time between the transmission and the reception of the sound waves, and the temperature reading is proportional to an elapsed time determined by a timing circuit in which the resistance value of the temperature sensor operates to determine the charging time of a capacitor. The display is of a circular, dial type using lighted spots and a lighted arcuate shaped column to display the depth and temperature.

Abstract: Arrangement for monitoring the temperature of a moving component: a stationary measuring device including an oscillator; a sensor on the moving component is moved past the measuring device; the sensor includes a coil that is outside the moving component and a cold conductor that senses temperature and changes its impedance in response to temperature changes and that is inside the component and electrically connected to the coil, whereby the coil is effectively short circuited or effectively open on the different sides of a preset temperature level sensed by the cold conductor, and the effective condition of the coil is sensed by the measuring device; a capacitor may be placed in series with the coil; the coil is helical and is in a plane; the coil and the cold conductor and the connecting leads are held in place by an insulating substance; specifics of the sensor body configuration are disclosed.

Abstract: Apparatus for measuring barometric pressure comprising a housing made of high thermal conductivity metal and defining a cavity therein, a diaphragm of flexible spring type material clamped in position across the cavity dividing it into upper and lower portions, a connecting passage leading from the lower portion of the cavity to the pressure to be measured, electrical means for measuring deflections of the diaphragm and providing a control signal to a power supply, a low boiling point liquid filling part of the upper portion of the cavity in the housing, with vapor from the liquid filing the remaining part, a heating coil positioned in relation to the housing and connected to the power supply controlled by the electrical means such as to bring the temperature of the liquid and thus its vapor pressure to a level to balance the pressures across the diaphragm, thermal insulation encompassing the housing and means for measuring the temperature of the housing and the liquid therein, this temperature being related

Abstract: A gas safety control hatch attached to the top of a crude oil storage or stock tank. The hatch has a lid which can be opened to enable the contents of the stock tank to be gauged. A liquid lock apparatus is provided between the interior of the hatch and the interior of the stock tank. The liquid lock comprises a downwardly extending conduit having one end opened into the hatch and the other end opened in proximity of the bottom of the stock tank so that liquid always covers the lower, marginal end of the conduit whenever any appreciable amount of crude is stored in the stock tank. Accordingly, when the lid of the hatch is opened, no obnoxious fumes from the vapor space within the tank can flow into the hatch; and accordingly, the tank can be safely gauged by running a sampling apparatus down through the conduit and into communication with the liquid phase of the tank contents.

Abstract: Disposable sampling apparatus for drawing samples from melts by lowering thereof into the melt and comprising a mold embedded in a sand body, a tube constituting an inlet for the molten material into the mold and projecting out of the sand body, and a tubular sleeve surrounding a portion of the sand body and at least a portion of the inlet tube to the mold. The novelty features of the invention reside in the fact that the sleeve is arranged on a portion of the sand body adjacent the inlet tube and extends therefrom outwards around the inlet tube, and that there is a gas flow path through said sand portion from the recess formed between the inlet tube and the sleeve to an open portion of the sand body.

Abstract: A pipet for slurry and the like comprising a body with an end chamber containing a slidable element which, between them, defines a predetermined volume. The element includes an end plate to close the chamber, and a biased plunger is mounted in the body for moving the element so as to open and close the chamber and thus trap the predetermined volume of material to be sampled. The element is replaceable with one of different size to vary the volume of sample. In one form, a cutting edge on the body and a cutting surface on the end plate cooperate to sever fibrous material only partly in the chamber.

Abstract: An underwater diver's instrument case for tethering an underwater watch and depth gauge to a pressure gauge suspended from a hose leading from a regulator mounted on a scuba tank. The case includes a housing formed with a compartment defining pressure gauge and depth gauge cavities. The housing includes a retainer which retains the pressure and depth gauges in their respective cavities. The cover is formed with windows overlying the faces of the respective gauges to enable viewing thereof. Thus, the case may be conveniently mounted to a pressure gauge conventionally suspended from a scuba diver's air regulator by means of a hose and the depth gauge will be readily available for convenient viewing during a dive much the same as the pressure gauge.

Abstract: Distance-measuring apparatus for attachment to a speedometer cable comprising a sensing assembly and a digital counter; the sensing assembly including a drum portion having a bore therethrough for disposition over an exposed section of the rotatable inner shaft of the speedometer cable, fasteners associated with the drum portion to secure the drum portion to the inner shaft, at least one magnet affixed to the drum portion adjacent a point on the periphery thereof, a housing surrounding the drum portion and spaced therefrom to allow independent rotation of the drum portion therein, fasteners associated with the housing to secure the housing to spaced ends of the sheath of the speedometer cable adjacent to the exposed section of the inner shaft, a magnet-responsive switch affixed adjacent a point on the periphery of the housing; electrical leads connecting the switch with the digital counter; the digital counter being capable of receiving and retaining a preselected constant value and adding the constant value

Abstract: A transducer comprising a longitudinal bar of piezoelectric material having one longitudinal face substantially covered with a first electrode and the opposite longitudinal face in contact with a predetermined plural number of separate electrodes spaced along the length thereof, permits all detected echoes to be processed by a single low input impedance amplifier permanently coupled to the first electrode.

Abstract: The apparatus comprises an ultrasonic transducer for the purpose of scanning an examination subject, and an image display device for representation of the ultrasonic information signals in the form of a display image. In accordance with the illustrative disclosure, an arrangement of electric frequency filters is associated with the ultrasonic transducer, said frequency filters manifesting a frequency response which is essentially the inverse of the frequency response being imposed on the ultrasonic impulses by the attenuating examination subject in the ultrasonic-transmit path. The imaging apparatus finds application particularly in medical ultrasonic diagnosis.

Abstract: Transducer completely immersed in ultrasonic propagating liquid can be oscillated back and forth at a high rate, without producing significant turbulence in liquid, if oscillation velocity varies as a predetermined smooth continuous function of time.

Abstract: In the thermal gas pressure gauge, a foil heater has a heater surface disposed in gas communication with the gas to be measured and the heater surface is thermally cycled at first and second reference frequencies to produce cyclical heating of the gaseous material adjacent the heating element. A directional microphone is disposed facing the heating element to derive signals of an amplitude determined by the amplitude of the cyclical heating effect of the gaseous material at the first and second reference frequencies. The detected signals are synchronously detected to produce a pair of dc outputs indicative of pressure in two respective pressure regimes. In an overlap pressure regime the two dc outputs are converted to digital signals which are correlated with pairs of values tabled in a read only memory for reading out a digital signal indicative of the pressure. In a low pressure regime from approximately 10.sup.

Abstract: A strain gage particularly suited for use in detecting and measuring mechanically induced strain in thermally strained specimens including an elongated link, adapted to be fixedly secured to the surface of a specimen, having thermal expansion characteristics matched with those of the specimen, and characterized by a differential capacitor employed for detecting strain induced motion as such motion is effected between the link and the surface of the specimen.

Abstract: An apparatus for measuring or monitoring changes in the periphery of a vessel, especially a pressure vessel for containment of a nuclear-reactor core, comprises a wire which extends around the periphery of the vessel and is held along this periphery by a plurality of mechanical elements establishing a predetermined spaced relationship between the wire and the periphery. The wire extends polygonally around these elements and is provided with a displacement-measuring device responsive to any tendency of the wire to shift from its original position. According to the invention, the connecting elements between the wire and the periphery of the vessel are constituted as sheet-metal plates or vanes lying in planes substantially perpendicular to the axis of the wire and extending radially with respect to the axis of the vessel. The vanes are elastically deformable laterally or shiftable in the direction of the axis of the wire and are retained under tension by the tension applied to the wire.

Abstract: In radiographic apparatus of the kind known as computerized tomographic (CT) apparatus, a source of radiation is moved around a patient to irradiate the patients body from a plurality of directions. In certain types of CT apparatus the motion includes a stepped rotation. During each rotational step reaction forces are transferred to the fixed part of the apparatus and for rapid movements the reaction forces can become excessive. To reduce the reaction forces a compensating means is provided to oppose the reaction forces. This may be a resilient member such as a spring and may react against a member, such as a cam, which is shaped to adjust the compensating force to a suitable value.

Abstract: A pulley including a cup-shaped hub having a cylindrical sidewall provided with a radially extending annular, multiple wall thickness fold at the axially inner end thereof, a radially outwardly flaring belt retaining flange at the axially outer end thereof, and a belt retaining ring mounted on said sidewall adjacent, and projecting radially outwardly beyond, the fold. One aspect of the invention comprises the method of making the pulley including the step of mounting the belt retaining ring prior to the step of forming the axially inner, multiple wall thickness fold.

Abstract: A method and apparatus for the cold forming of a metal billet into a desired geometrical configuration including the steps of feeding the billet into a die cavity while the cavity is open, closing one end of the die cavity with the billet confined therein and disposing an anvil in the opposite end of the die cavity to define an annular space between the anvil and the die cavity wall, closing such annular space, applying a first pressure against a selected area of the billet sufficient to cause the billet to commence extrusion about the anvil and to fill the die cavity, thereafter increasing the volume of the annular space between the anvil and die cavity wall into which the billet is extruded while maintaining a substantially uniform second pressure against the billet in opposition to the flow of the metal, the magnitude of the second pressure being less per unit area than the first pressure whereby the metal flows substantially uniformly in the course of the extrusion.

Abstract: A transmission by gears with divided gear trains which comprises for N gear trains 2N gears connected in pairs by torsion shafts which distribute evenly the power to be transmitted, due to a predetermined rigidity.In the case of two gear trains, the rigidity of the torsion shafts is in the inverse proportion of the squares of their rotation speed.

Abstract: A gear comprises a hub and a gear ring mounted thereon, each formed with peripherally spaced apertures and interlocking elements extending peripherally between adjacent apertures to hold the hub and gear ring against axial movement relative to each other. The apertures of the hub and gear ring register. Torque is transmitted between the hub and gear ring by a plurality of first abutments on the hub which have radially outwardly facing surfaces adjoining respective apertures therein, a plurality of second abutments on the gear ring which have radially inwardly facing surfaces adjoining respective apertures therein and radially aligned with respective outwardly facing surfaces, and a plurality of prestressed elastomeric spring elements disposed in the registering apertures. Each spring element engages the radially aligned surfaces and is retained in the apertures by a retaining disc secured to the hub and engaging the spring element on one side of the gear.

Abstract: In combination with a transmission having both multiple input and output portions, each of which contains a plurality of speed change gears, is a manual shift control system having pluralities of both input and output shift rails that are adapted to cooperate with input and output cam shafts that extend through shift rail input and output cam shaft cutouts, with one or both cam shafts having at least one one-way cam which may be in combination with one or both of a two-way cam and an interlock cam, said one-way and two-way cams being adapted to cooperate with one-way and two-way cam follower surfaces, respectively, to effect bidirectional and unidirectional movement of the respective shift rails upon oscillation of the cam shafts, with the cam follower surfaces also being adapted to alternately cooperate with the interlock cams to arrest all but the selected ones of the input and output shift rails against axial movement. Details of actuating means and mechanical interlock means are also set forth.

Abstract: An engine control linkage for connection between an engine output control and hand and foot controls. The linkage includes first and second elements interconnected by a pivotable link, motion being arranged to be transmitted from the hand control to the engine output control by non-pivoting translational movement of the link. A connection is provided between the foot controls and the link for pivoting of the link relative to the first and second elements to vary the effective length of the linkage and thus override the engine output setting of the hand controls.

Abstract: A remote control rear-view mirror assembly has a bracket mountable on an automotive vehicle and a housing supported on the bracket, in which housing a mirror holder is mounted for universal swiveling movement. The bracket has a shaft extending through a housing bottom plate into the housing and having a plurality of radial cam projections angularly spaced from each other. A fastening means in the housing, having a ring disposed around the shaft has a plurality of cam projections angularly spaced from each other and extending radially inwardly from the annular ring. The cam projections engage each other with the housing bottom plate fastened tightly between the fastening means and the bracket. A cable attachment adapter mounted on the mirror holder has three radial grooves angularly spaced 120 degrees apart from each other. Three control wire elements have ferrules on one end each retained in one of the grooves, the ferrules being prevented from moving out of position by an annular flange on the mirror holder.

Abstract: Apparatus for synchronizing the operation of a pair of wire-operated mechanisms such as a carburetor and a lubricating oil pump. In order to take up block or looseness which may exist, the actuated wires from the mechanisms are connected to a rocker beam which is part of a slider. An actuating wire is connected to the slider. Lock means is unlocked and enables the rocker beam to equalize tension in the two wires until a sufficient force is exerted by the actuating wire, whereupon the lock means locks the beam and the adjusted actuating wires operate the mechanisms in synchronism.

Abstract: A detachable handle assembly is provided for a powered garden tool, such as a hedge trimmer. The handle assembly according to the present invention includes an elongated first member having a hand grip formed at one axial end. A clamp assembly is connected to the other axial end of the elongated member and detachably, clampingly receives the garden tool so that the garden tool can be moved by means of the elongated handle member. In addition, the clamp assembly is adjustably coupled to both the garden tool and the elongated handle member such that both the angle and pitch of the garden tool relative to the elongated handle member can be infinitely variably adjusted.

Abstract: A rotary support device for use with a dial apparatus is disclosed. The rotary support device is formed mainly of a first cylinder having an aperture through which a rotary shaft of the dial apparatus passes, the rotary shaft being then fixed thereto, a second cylinder having an aperture through which the rotary shaft passes with a clearance therebetween, and a coupling member which resiliently couples the first and second cylinders. The second cylinder is coupled to a rotating member of the dial apparatus and they are to be rotated together, so that when the rotating member of the dial apparatus is rotated, the rotary shaft of the dial apparatus is rotated through the second cylinder, the coupling member and the first cylinder even if the axis of the rotary shaft is eccentric to the axes of the support cylinders.

Abstract: The present disclosure sets out an improvement in counterbalanced pumping systems of the type described in my prior application Ser. No. 824,346 filed Aug. 15, 1977 wherein two mandrels are mounted on a common shaft which also is geared through a planetary gearing system to a drive motor. The mandrels play out, in opposing directions two spirally stacked sheave chains, one going to a well bore to support the pumping assembly therein, and the other being extended into a counterbalance pit to support a counterbalancing weight at the end thereof. The stacked mandrels are enclosed in a common housing which also includes the necessary turning rollers for directing the sheave chains into the respective bores, one end of the housing being attachable directly to the exposed end of the well pipe while the other end of the housing being supported on top of the counterbalance pit liner. The housing may thus form a leak-proof enclosure in which sufficient oil may be stored to lubricate the sheave chains and the mandrels.

Abstract: A warm-up control for a closed loop engine roughness control responsive to engine load and engine temperature is disclosed herein. The warm-up control provides a first correction signal to the closed loop engine roughness control operative to increase the effective value of the roughness signal in response to a signal indicative of a load being applied to the engine and the engine temperature being below a predetermined temperature and a second correction signal to the closed loop engine roughness control operative to decrease the effective value of the roughness signal in response to a signal indicative of a light engine load and the engine temperature being below a predetermined temperature. The control also generates a transient signal in response to a sudden increase of the engine's load operative to cause the closed loop engine roughness control to generate a fixed output signal for a predetermined length of time.

Abstract: A device for stripping the insulating sheathing from electrical wire conductors includes a pair of jaws formed of a stack of resilient blades having at least one leg which has an end formed with a cutting projection, the cutting projections being aligned to form a cutting edge when the blades are assembled in a stack to form one of two stripping jaws for the device. The blades of the jaws will exhibit different flexion characteristics depending upon the shape and configuration of the blades which may be in accordance with one of several aspects of the invention.

Abstract: A dual vertical spindle turning machine for simultaneously machining workpieces chucked on the respective spindles having a horizontally movable dual tool assembly including independent side-by-side tool slides, and independent drive motors for simultaneously moving the tool slides along a horizontal slideway of a vertically movable main slide. The tool slides have clearance therebetween to enable independent adjustment of either one or both of the tools by incremental energization of either one or both of the tool slide drive motors.

Abstract: A control apparatus for a shaping machine such as a lathe includes a positionable piston and cylinder assembly for driving the cutting tool toward the workpiece to establish cut depth. A feeler rides a pattern to limit cut depth and control cut shape. A plurality of cam-operated switches responsive to piston and cylinder assembly position controls cut depth in successive cycles until control is assumed by the feeler. The feeler operates switches and a control valve to permit close control of the shaping in accordance with the pattern.

Abstract: A quick change device for mounting a tool in a support member such as a turret. The tool has a shank with radially outwardly movable balls therein and the mounting device includes a sleeve receivable on the shank and adapted for mounting in a bore in the support member. The shank includes an actuator ball causing the aforementioned balls to move radially outwardly and engage a shoulder at the end of the sleeve to pull the tool into a predetermined axial position and lock the tool in the aforementioned position while cooperating elements of key means in the tool in the support member prevent rotation of the tool in the support member.

Abstract: An auxiliary feeder apparatus for a punch press. The feeder picks up blank stock to be punched, transfers it to a work holding collet where the press punches a circular pattern of spaced holes or slots in the blank to form an electric motor lamination or the like. After punching, the feeder apparatus picks up the finished part and transfers it to a storage location while at the same time picking up and transferring a new blank to the collet for punching. The operation of the feeder apparatus is integrated with the operation of the punch press and is fully automatic. Controls in the feeder apparatus and press prevent the punch from operating when malfunctions, such as a part not properly positioned on the collet or two or more parts transferred to the collet, occur.

Abstract: The device for cutting a web into sections according to cutting marks provided on the web comprises an advancing roller for advancing the web along a predetermined track, an electrooptical scanning device for reading respective cutting marks on the web and for generating corresponding output signals, a cutting mechanism arranged on the track behind the advancing roller and monitored by the scanning, a tension equalizing and loop forming device arranged on the track before the advancing roller and the scanning device to loop resiliently a portion of the web, an elliptical gear driving system for driving the advancing roller; and a magnetic coupling arranged between the driving system and the advancing roller to stop the feeding of the web in response to the output signals from the scanning device and to resume the feeding after the cutting mechanism has severed the marked web portion.

Abstract: A cutting assembly of the type useable for severing a sheet into desired lengths. The assembly includes an elongate track having a slot extending through an upper wall thereof for slidably receiving and retaining a cutter slide therein. The track has upper surface segments that are roughened; preferably with laterally extending grooves spaced along a major portion of the elongate slot. A cutter slide moveable within the slot has a top member overlying the cutting element and extending beyond the element both laterally and in the direction in which the slide is moveable so as to overlie the roughened surface segments of the track. The top member has an extremely smooth stationary lower surface in the regions overlying the roughened track surfaces.

Abstract: An improved, safer, more efficient saw table construction is provided in the present invention by channelled guide tracks which slidably support a tool and plate assembly in any one of two positions at right angles to each other. The tool can be readily moved from one position to another, without remounting the tool on the tool plate, by controllable withdrawal of the tool plate from the ends of the guide tracks, rotation of the entire tool and plate assembly, and reinsertion of the plate into the channelled tracks provided.

Abstract: Saw guide apparatus for longitudinal or near longitudinal saw cuts in an elongate workpiece has a base from which at least one saw guide column projects upwards. The base and said column provide respective horizontal and vertical bounding faces which are coplanar so as to define a vertical support plane against which the elongate workpiece can be placed to depend below the base. Location means are provided to set the position of the workpiece transversely to a saw guide plane defined by said guide columns so that the position of the saw cut in the workpiece can be controlled correspondingly.

Abstract: An automatic chord control system is readily incorporated in an electronic organ by means of large scale integrated circuit chips. The automatic chord control causes a chord or group of notes within an octave played on the lower manual keyboard to play through the upper manual voice in the octave below the lowest melody note being played on the upper manual keyboard. The proposed automatic chord control system has two operating modes. In the first mode, the notes transferred to the upper manual are generated in direct correspondence to the keys activated on the lower manual. In the second mode, the notes transferred to the upper manual are generated by a set of preset chords activated by single lower manual keys.

Abstract: A music box includes a casing molded from synthetic resin material, to which a diaphragm is secured with a metallic resonator plate interposed therebetween. Sound produced by the diaphragm causes a resonance of the plate and additionally of the casing, giving off an amplified, clear sound externally.

Abstract: A bridge pin for guitar or the like is formed of a heavy metal, such as brass to materially increase the presence and the sustain of the instrument.