Abstract: CMPO is safely, reliably and rapidly decomposed under mild conditions. A CMPO-containing substance is emulsified in an electrolyte comprising an oxidation promoter (silver ion) by an emulsifier in an emulsifying tank, this electrolyte comprising the CMPO-containing substance is supplied to an anode chamber, and an electrolytic oxidation reaction is performed by passing an electric current. By emulsifying the CMPO-containing substance, the surface area of CMPO in contact with electrolyte is increased, and electrolytic decomposition is thereby promoted. As sufficient CMPO decomposition is not obtained by passing the emulsion only once through an electrolysis tank 1, a batch oxidation method is employed wherein an anolyte is recirculated by a recirculating pump 3a through the anode chamber, a constant temperature bath 7a and an emulsifying tank 6, so that electrolysis is performed with the CMPO-containing substance permanently emulsified in the electrolyte.

Abstract: A high hat stand has a lower support pipe and an upper pipe above the lower pipe and to which a fixed cymbal is attached. An upper movable cymbal is relatively movable with respect to the lower cymbal by an operating shaft that passes through the lower support pipe and is connected with a swingable foot pedal. Two pivotable legs are supported to the pipe. Together with the foot pedal support body, the two legs support the lower pipe. The pivot orientation of the legs determines the tilt of the pipe. The pedal is connected with a support and a ground member on the support, the ground member being movable outward from the lower pipe for establishing, along with a position of the legs, the tilt orientation of the lower pipe and the high hat stand.

Abstract: A chair including a mechanism for preventing shaking of the chair due to vibration of a drum performance, or the like. The chair seat is attached to an upper support post by a holder that clamps around the upper support post. The holder includes two opposite holder parts which are drawn together by tightening screws. The upper support post is received in the interior of a lower support tube. A shaking prevention compression bush is disposed on the lower part of the upper support inside the interior of the lower support and presses against the interior wall of the lower support preventing shaking of the upper and lower supports.

Abstract: The body of an electric guitar includes a lower member defining the bottom of the guitar and having a concave on its upper surface for receiving an upper member. The concave is defined by a peripheral edge region of the lower member. The periphery of the upper member meets the inner periphery of the peripheral edge region of the lower member at a peripheral joint line. The height of the upper member where it meets the periphery of the lower member has the same height, forming a smooth joint line on the upper surface of the bottom member and in from the edge region. The materials of the upper and lower members differ from each other and/or their colors are different. The outer periphery of the peripheral edge region is rounded in the thickness dimension.

Abstract: A tip part for a support leg of a chair or the like. The support leg having a pair of leg members. A leg tip piece is sandwiched between the leg members with the leg members seated in concave recesses in the tip piece. A stay extends into a groove in the main body of the tip piece and is journaled to the leg members by a rivet through the tip piece. The lower end of the tip piece is in turn installed at the bottom of an opening in an end cap for the leg. The bottom of the tip piece disperses the pressure exerted by the load on the leg to avoid damage to the end cap due to concentration of the load.

Abstract: An attachment and detachment mechanism for a weight held on the boom rod of a boom cymbal stand. The weight has a hole in one side over which a cover is installed and there is an aligned hole in the cover. A spring operated boom rod installation and detaching lever which is disposed between the cover and the side of the weight, has a window through it so that the boom rod can be installed through the cover, the window and into the hole in the weight. The periphery of the window is engagable in a groove in the boom rod under the bias of a spring which moves the lever to cause such engagement. Moving the lever counter to the spring force releases the boom rod so that it can be withdrawn from the hole in the weight and permits insertion of the boom rod in the hole.

Abstract: A chair height adjusting mechanism including an externally threaded upper support supporting a chair seat, a tubular lower support into and out of which the upper support is movable. An internally threaded rotatable member rotatable up and down along the upper support. An upper gearing surface on the underside of the rotatable member. A fixed member around the upper support and through which the upper support is slidable. A tightening part for clamping the fixed member on the upper support. The fixed member having a lower gearing surface meshable with the gearing surface on the rotatable member so when they are in mesh, the rotatable member is held stationary. Support legs on the lower support and also connected with the tightening part.

Abstract: A drum head is held over the open end of a drum body by a drum hoop passing around the edge of the drum head. A lug on the side of the drum body has an axial opening which receives a lug nut. The lug nut has an axial threaded opening. A threaded bolt, which engages the drum head hoop, is tightened into the threaded opening of the lug nut and draws the drum hoop to tighten the drum head. A radial opening extends radially through the lug nut from the opening in the lug to the threaded opening for the bolt. An elastic bolt engaging and bolt rotation resisting chip in the radial opening engages the lug on the outside and the bolt in the lug nut opening for restraining rotation of the bolt. There may be a drum head at each end of the drum body, a respective lug near each drum head and a single element defining both lug nuts.

Abstract: A drum hoop clamp includes a pivotable clamp body supported on the drum beater as a pivot base for the clamp body and a clamping jaw rotatably journaled to the clamp body at one side of the clamp body pivot. When the clamp body pivots to move the clamp jaw against the drum hoop, the rotatable clamp jaw rotates with respect to the clamp body to an orientation providing fullest contact between the clamping surface of the clamp jaw and the drum hoop, regardless of the shape of the clampable surface of or the thickness of the drum hoop.

Abstract: A tripod stand for supporting a musical instrument or other object, wherein a main post is provided with an upper slide member to which the upper ends of the three legs of the tripod are hingedly connected. A respective articulated arm connects each leg with the lower portion of the main post. Movement of the slide member up and down causes selective inward and outward movement of the legs. One of the articulated arms is longer than the others and is attached further up its associated leg than the other articulated arms. Consequently, the downward movement of the slide member causes that leg attached to the one arm to move outward further from the main post, making the bottom ends of the legs move from defining an equilateral triangle to defining an isosceles triangle and thereby tilting the main post. Greater stability can be achieved by increasing the angle between the two legs that are opposite the leg having the one longer articulated arm.

Abstract: An angle adjusting mechanism for a supported article includes a fixedly positioned holding member and a rotary member relatively rotatable with respect to the holding member. A plurality of plates are disposed between the rotary and holding members. The holding member is provided with a plurality of claw teeth at the inner periphery of one arcuate segment and the rotary member is provided with a respective plurality of claw teeth over a different arcuate segment of the inner periphery thereof. A first plurality of fixed plates, including claw teeth on their peripheries, engage the teeth of the holding member, on a second plurality of rotary plates, including claw teeth on their peripheries, engage the claw teeth on the inner periphery of the rotary member.

Abstract: In a high hat stand which includes a cymbal with a convex bottom, a cymbal receiving plate having a concave upper surface for receiving the convex cymbal bottom. The plate is journaled to a main receiving body at one side of the center of the plate. An adjustable bolt, for adjusting the pivot orientation around the journal of the plate with respect to the body, is located at the other side of the center of the plate and the body. A cushion is between the plate and the cymbal.

Abstract: A tripod stand for supporting a musical instrument or other object, wherein a main post is provided with an upper slide member to which the upper ends of the three legs of the tripod are hingedly connected. A respective articulated arm connects each leg with the lower portion of the main post. Movement of the slide member up and down causes selective inward and outward movement of the legs. One of the articulated arms is adjustable in length and is typically adjusted longer than the other nonadjustable articulated arms when it is desired to tilt the stand toward the leg attached at the one articulated arm. Such adjustability is obtained by making the one articulated arm telescopable in length or by providing that arm with an elongate slot that is slidable along the journal connection of that arm to the respective leg and is selectively positionable at a desired length for that arm.

Abstract: A clamp is supported on the side of a drum for mounting the drum on a support rod. The clamp is mounted so as to avoid concentration of the load on a single part of the drum body. The clamp is cushioned at opposite vertical ends of the clamp where it is attached to the drum body to minimize the transmission of vibration of the drum to the support rod.

Abstract: A high hat stand comprising a stationary cymbal on a stationary support, a movable cymbal above the stationary cymbal and movable down into engagement with the stationary cymbal, a spring urging the movable cymbal away from such engagement, and a pedal connected with the movable cymbal operating rod for operating the movable cymbal against the urging of the spring. Two sprocket wheels of different diameter are supported on an axis fastened on the cymbal operating rod. A first strap in the form of a chain extends from the pedal over the first sprocket. A secondf strap in the form of a chain extends from the second sprocket to a stationary support. The arrangement causes selected movement of the pedal to cause a different extent of movement of the cymbal operating rod, a different force to move the cymbal, and changes the rate of return of the pedal and enables a spring of a different selected spring force to be used than the foot force that is applied to the pedal.

Abstract: A controller for a fine positioning device constructed of planar structural units connected symmetrically and equipped individually with planar flexible beams arranged in an opposing relation between two rigid members and actuators for applying forces between the two rigid members includes displacement detection devices, displacement setting devices, sensor devices for determining the degree of each translational displacement and the degree of each angular displacement, and control devices for controlling the voltages to be applied to the respective actuators.

Abstract: A fine positioning device is formed of a rigid support member; a first set of radial flexible-beam displacement mechanisms provided symmetrically to each other on the support member to produce angular displacements about a first axis; a second set of radial flexible-beam displacement mechanisms provided symmetrically to each other on the support member to produce angular displacements about a second axis which is perpendicular to the first axis; a third set of radial flexible-beam displacement mechanisms connected to either one of the sets of radial flexible-beam displacement mechanisms to produce angular diaplacements about a third axis which is perpendicular to both the first and second axes; and a fine motion table fixed on the radial flexible-beam displacement mechanisms which are other than those connected to the radial flexible-beam displacement mechanisms for producing angular displacements about the third axis.

Abstract: A tiltable tripod stand includes a main post to be selectively tilted and three tripod legs having upper ends which are pivotally connected at the main post. One end of an articular arm is pivotally connected to each leg intermediate its ends and the other end of the arm is pivotally connected to the main post. Two related embodiments for tilting the stand are disclosed. In one, there are two upper holding members on the main post, one movable with respect to the other. One tripod leg is pivotally connected to one upper holding member and another leg is pivotally connected to the other upper holding member so that movement of the one with respect to the other changes the tilt angle of the leg and tilts the main post. In the other embodiment, there are two relatively movable lower holding members.

Abstract: A rotatable holder with position memory particularly useful for restoring a memorized orientation for a support rod for an article. The holder has a fixed part and a rotatable part rotatable on the fixed part. First gearing on the rear of the rotary part meshes with second gearing on the front of the fixed part when a securing bolt moves them together, preventing rotation of the rotary part. Lossening of the securing bolt frees the rotary part to rotate. The rotary part includes a rearwardly extending protrusion with its internally gear toothed. A memory ring disposed inside that protrusion and has peripheral gearing which meshes with the gearing in the protrusion, so that the memory ring rotates with the rotary part. The memory ring is biased by a spring rearwardly along the protrusion to disengage the memory ring from the gear toothing when the securing bolt is loosened, which would enable free adjustment of the rotary part with respect to the fixed part.