Abstract: A cold accumulator filled with a cold accumulating material including 20 to 95 at % of at least one element selected from the group consisting of cerium (Ce), neodymium (Nd), praseodymium (Pr), magnetic body dysprosium (Dy), holmium (Ho), erbium (Er) and thulium (Tm), and 5 to 80 at % of an additive containing at least silver (Ag), thereby improving the specific heat at 10 to 30 K. The cold accumulating material can increase the efficiency of heat accumulating at 10 to 30 K, and the cold accumulator can be applied to refrigerators which generate refrigeration at cold low temperatures of 10 to 30 K.

Abstract: A universal support is provided wherein the angular adjustment provided by the universal support for an object supported thereby remains fixed even though the object, such as a drum, has been removed from the universal support. The universal support is capable of holding a support rod relative to a support stand having an attachment member. The universal support includes a receiving member, with a rod press and a support stand press each attached to the receiving member. The receiving member and the rod press each has a concave surface adapted to accommodate the rod support sandwiched between the contoured surfaces of the receiving member and the rod press. In addition, the receiving member and the support stand press each has a concave surface adapted to accommodate the attachment member of the support stand sandwiched between the concave surface of the receiving member and the support stand press.

Abstract: A beater assembly includes a first beater rotary shaft which is linked with a first operating shaft through a first link, and a second beater rotary shaft which is linked to a second operating shaft through a second link. The first and second beater rotary shafts are linked through a bearing which permits relative rotation between the first and second beater rotary shafts and those shafts are supported at the tops of supports on both sides of the beater assembly. A respective cam member is rotatably adjustably installed at one end of the first rotary shaft and the second rotary shaft and a spring is provided between each of the cam members and the lower part of the supports.

Abstract: A stand for both a tom tom drum and a cymbal having a lower pipe supported by legs, an intermediate pipe inserted into and protruding above the lower pipe and an upper pipe inserted into the intermediate pipe and protruding adjustably above the intermediate pipe with a cymbal holder on the upper pipe. A tom holder fixed at the intermediate pipe. The tom tom is supported on a support rod having a ball at its end which is received in a rod holder which grasps the ball. The rod holder has a hole in it for receiving the intermediate and upper pipes.

Abstract: A guitar pickup structure includes pickup elements which are arranged below the lower surface of a guitar string saddle that is provided on a guitar bridge. The bridge is installed on the top surface of the guitar. Vibrations of the strings are transmitted to the pickup elements through the saddle, for generating amplified sounds by means of the electric signals. Two vibration transmitting bars run through the bridge and the top surface of the guitar body and contact the lower side of the saddle. A pickup member, having two pickup elements which correspond to and engage the two vibration transmitting bars, is arranged beneath the guitar body top surface. The pickup member is fixed by means of an installation member or bolt arranged on the guitar bridge below the saddle.

Abstract: A sound comparison device for a drum that has a body that includes a bottom with a periphery. The periphery of the bottom of the body is in contact with the surface of a drum head. A drum head tension measurement element includes a tip which protrudes from the bottom of the body. A spring biases the tip to press against and sink into the drum head to a distance determined by the tension on the drum head. A display is connected with the measurement element for causing the display to display a numerical value Y which corresponds to distance X of the protrusion of the measurement element. The values X and Y are coordinated so that the display displays the value Y=K/X1/2, where K is a constant.

Abstract: A snappy for a snare drum wherein the snare is caused to accurately and effectively contact the drum head. Both ends of the snare are fixed to a respective holding plate. A belt is installed in the holding plate and when the belt is either tightened or loosened, it causes the snare to respectively contact or become separated from the drum head surface. The holding plate that fixes and holds the snare has a V-shaped cross section including a rear plate part and a front plate part and a bend so that the plate is bent to the drum head. A belt engaging part protrudes down from the rear plate part near the bend and the belt is attached there. A snare is fixed on the radially inner side of the front plate part.

Abstract: A foldable guitar stand having a generally U-shaped body with the U opening toward the front side of the stand. A pair of front legs respectively attached to the left and right front sides of the stand and rotatable left and right at their journaled attachment to the front of the body. Left and right rear legs attached to the left and right ends toward the rear side of the body and journaled to swing forward and rearward. Right and left support members attached at the rear of the body and swingable upward to support the rear of the guitar stand. Buffers may be placed on the supporting surfaces of the stand.

Abstract: A drum holder for a drum having a drum hoop around the upper part of the drum body. The drum hoop having three first flanges, each with a first installation hole. A bracket with side arms and having three corresponding second flanges each with a second installation hole. The first and second flanges are overlapped. A vibration absorbing bolt extends into each set of aligned first and second holes with a vibration absorbing material part at one side of the flanges and a nut for being tightened on the bolt at the other side of the flanges. A support plate supports the side arms of the bracket and the support plate is in turn supported on a support for the drum.

Abstract: A drum hoop with integral lug bolt receivers defined around the hoop. Each lug bolt receiver including a through hole through which a lug bolt is passed to a respective lug on the periphery of the drum body. Because the lug bolt receivers are integrated with the hoop, the receivers are retained and do not separate from the drum hoop when the lug bolts are loosened for enabling replacement of a drum head held by the drum hoop. In addition, the interior surface of the drum hoop is tapered toward the outer surface in a direction from the outer edge toward the inner edge of the hoop to facilitate attachment of a clamp to the drum hoop.

Abstract: In order that the beating surface of the main beater body of a drum beater on a drum pedal will squarely and flatly beats against a drum head, the beating surface of the beater body is inclined with respect to the swingable beater body support rod at an angle selected so that the beating surface orientation will be approximately the same orientation, i.e. the same plane, as the drum head surface at the moment of beating. A similar beating surface may be formed on the rear side of the beater head.

Abstract: A pipe fastening device including a split sleeve main tubular body with an upper and a lower internal tapered surface. A lower fixing member at the end of the pipe having a frusto-conically shaped body matching the lower tapered inner surface of the tubular body. An upper movable member also having a frusto-conically shaped body matching the upper inner tapered surface at the top of the tubular body. A bolt from an installation member passes through the fixing member and is fixed in the movable member so that tightening of the bolt draws the movable member toward the fixing member. The tapered surfaces cause the tubular body sleeve to expand for securing the tubular body in the pipe. The fixing member and the movable member have protuberant parts received in the groove of the split sleeve tubular body.

Abstract: A support leg for a musical instrument bass drum including a base on the drum body having an annular gear surface, a leg pivotally supported to the base at the center of the gear surface, and gearing on the leg for meshing with the gear surface on the base for preventing swinging of the leg with respect to the base. A spring urges the base and leg apart to permit the leg to pivot. A bolt is tightened to move the gear surface and gearing into meshing. Cooperating stoppers on the base and the leg establish the use and nonuse swing positions of the leg with reference to the base. The support leg includes a main body and a leg that expands or contracts with reference to the body and a clamp for clamping the leg at a selected expanded position. A display on the main body displays the expanded position of the leg with respect to the body.

Abstract: A guitar belly for a guitar body including a rear or reverse plate and a side plate around and standing up from the rear plate, which are integrally formed of the same plastic material. A separate cover plate is attached over the edge of the side plate to close the guitar belly. Reinforcing ribs are integrally formed of the same material as and along with the reverse plate. These include two or three longitudinal ribs extending from at or near the top front end of the reverse plate to the bottom end thereof, two horizontal ribs, one at the narrower width part and one at the greater width part of the belly, and two oblique ribs, each extending obliquely from the center of the belly and toward the one end of the belly and respectively outward from the center of the belly in opposite directions. Some or all of the ribs also extend up the side wall of the guitar belly. The ribs cooperate to prevent distortion of the belly due to string tension or other causes including playing the guitar.

Abstract: A drum beater includes a support with the beater rotary shaft on the support. A swingable beater attached to the beater rotary shaft is adjustable in position around that shaft for establishing the swing distance between the beater and the drum head. An operating member on the shaft is connected to the drum pedal such that operation of the drum pedal rotates the shaft. A beater shaft restoring cam is attached to a spring which is increasingly tensioned as the drum pedal is operated and which returns the cam and the beater shaft to a return position when the pedal is released. The cam is adjustably positionable in orientation around the beater rotary shaft.

Abstract: A foot pedal for a drum beater having a pivotable pedal connected by a strap like link member or chain to the surface of a rotatable swinging member supported on a pivot journal on the stand of the foot pedal. A drum beater attached to the swinging member for being swung thereby toward or away from a drum. The surface of the swinging member having a large diameter curvature section and behind it a small diameter curvature section. The linking member is moved off the large diameter section of the surface of the swinging member as the drum beater is swung from an inoperative position toward an operative position at the drum and is moved off the small diameter section of the swinging member in the final part of the trip of the drum beater toward the drum head.

Abstract: Disclosed herein is an amorphous material in the form of foil for the regenerator, which is prepared by quenching a melt of a rare earth alloy by injection toward the surface of a roll running at a high speed, said alloy being composed of one or more rare earth elements in an amount of 50-99 atomic %, with the remainder being one or more iron family elements. This amorphous material has a large, stable specific heat capacity at very low temperatures.

Abstract: A drum beater pedal having a support which supports a pivotable beater shaft. A beater on the shaft swingable toward and away from a drum head as the shaft is rotated. A pedal connected with the beater shaft for rotating the beater shaft to swing the beater. A cam on and rotatable with the shaft. A spring hanger supported on the cam by a bearing which permits free rotation of the spring hanger with respect to the cam. A spring extending from the spring hanger to a spring tension adjustment screw. An installation part secured to the support. The adjustment screw extending through a hole in the installation part and the screw and the hole being profiled so that the screw is prevented from rotating with respect to the installation part. An adjustment screw height adjustment nut below the installation part. An adjustment nut rotation blocking protuberant part projecting into a window in the installation part.

Abstract: A structure for holding a guitar string including a base plate at the guitar body near the bridge, a saddle above the base plate, a saddle height position adjusting screw and a front-back position adjusting screw for the saddle. The latter screw is held in a groove in a holding member. The holding member is rotatable in a fixed member on the base plate. The rotatability of the holding member enables the height of the saddle to be set, with corresponding adjustment in the tilt angle of the front-back position adjustment screw and the holding body in the hole. A screw clamps a holding part against the front-back position adjusting screw and to also clamp the holding part at a selected rotative position to which the holding part has been adjusted in conformity with the height of the saddle.

Abstract: A collapsible stand for use in supporting a guitar or another object. The stand includes a top main member, a central leg which is pivotable forwardly and rearwardly of the main member. In the forward position, the central leg is in a supporting position. Right and left side legs are provided to the right and left of the central leg and the side legs are pivotable outwardly away from the central leg and inwardly toward the central leg. The left and right side legs each include a supporting part thereon, e.g., for supporting a guitar. In particular, the left and right side legs are L shaped, and their bottom forwardly projecting parts would support a guitar. The extent of opening apart of the left and right side legs and the extent of rearward movement of the central leg when the legs are opened apart is restricted by the shape of the main member which the legs engage.