Abstract: The invention disclosed is a rotating portable guitar system made of a multifaced neck body rotatably mounted between two clear plastic discs attached at each end of the neck body. A regular shoulder strap is connected at each end to one of the two discs for holding the discs stationary relative to the neck body for allowing the neck body to be rotatable therebetween. The rotatable guitar includes push/pull knobs mounted at one end of the neck body for turning the guitar on and off. The guitar is rotatably free wheeling between the discs by manually rotating it from one face to another.

Abstract: A C.music-sharp. key roller for the foot tube of a flute is disclosed which is constructed such that a connector shaft hole within the connector is made in the form of a through hole by additionally providing an extended threaded through portion, and the opposite ends of the said through hole are fitted with an auxiliary bolt and with the leading end of the roller shaft, thus forming a double lock system. With this arrangement, the setting of the gap between the roller and connector during assembly is made easy, the loosening of the thread portions is prevented, and resetting is made possible upon the wearing-out of the sliding portion of the roller and the roller shaft.

Abstract: The speed of frame-to-frame advance after exposure in a camera having a pawl which acts with a single perforation per frame film to provide frame registration with an aperture station is optimized without film distortion by generation of a motor control circuit feedback signal giving information as to position and speed of the advancing next frame perforation. In one embodiment, a sensor develops a pulsed signal from the toothed edge of a pawl that travels with the film perforation. In another embodiment, the passage of a prerecorded pattern spaced a known distance from the perforation is sensed.

Abstract: A film cassette is disclosed wherein a filmstrip is advanced to the outside of a light-tight cassette shell in order to expose successive imaging areas of the filmstrip and can be returned to the inside of the cassette shell before all of the imaging areas have been exposed or after the filmstrip has been substantially completely exposed. According to the invention, a film-exposure status indicator is supported on the cassette shell for movement relative to the shell from a normal first position to successive second and third positions for providing respective visible indications that the filmstrip is generally unexposed, the filmstrip has been returned to the inside of the shell before all of its imaging areas have been exposed, and the filmstrip is substantially completely exposed.

Abstract: A camera having a red-eye alarm device which receives a signal representative of a distance l between an object to be photographed and a camera, the focal length f of a taking lens, a signal representative of a distance d between the optical axis of the taking lens and the center of an electronic flash discharge tube, and develops an alarm signal based upon the object distance l, the focal length f and the spacing d, the red-eye alarm signal being developed when a conditional formula ##EQU1## is satisfied.

Abstract: A bracket assembly for mounting on a trombone to provide an alternative and more comfortable holding position for the instrument comprising a framework of connected tubular members including a pair of spaced side frame members and at least two spaced cross braces connected therebetween, an angularly oriented mounting portion connected to each of the side frame members, an attachment member on the free end of each mounting portion for engagement with angularly related tubular portions of the trombone, clamping means for attaching the attachment members to the trombone, and a transversely extending member attached to one of the side frame members for engagement by the hand that supports the instrument so located that said hand can optionally be positioned farther forward from the mouthpiece than if the instrument is supported by the same hand in the conventional manner.

Abstract: A shutter having leading and trailing blade groups with an operating mechanism comprising a first drive member for the leading blade group, a second drive member for the trailing blade group, an energizing member movably supported to push the second drive member so that the shutter is given the driving power of a direction in which it runs, a moving member for moving the energizing member from a position where running of the shutter is completed to a position where the shutter is ready to run, and a mechanism for controlling the movement of the second drive member in accordance with movement of the moving member, wherein the mechanism moves the second drive member between a position where the leading and trailing blade groups both cover an exposure aperture of the shutter to effect double light-blocking, and a position where the aperture is covered by the leading blade group alone as the double light-blocking is cancelled.

Abstract: A plurality of stainless steel wire sprays along the wall of the drum of the clothes dryer. Preferably, the sprays would be positioned along a straight line of the wall, and would be covered with a perforated plastic guard, so that the clothes tumbling within the drum of the clothes dryer do not make contact with the stainless steels sprays. So that the charged electrons may make contact with the stainless steel sprays and become neutralized, the guard would be equipped with a plurality of ports, to allow the flow of charges between the charged close and the stainless steel sprays. In the preferred embodiment, there would preferably be located one or more equally spaced apart rows of sprays covered with a guard, so that the entire drum would be adequately supplied with the static eliminating means.

Abstract: A camera viewing unit for use in viewing the interior of a high pressure vessel that has a CCTV camera spring mounted within a hermetically-sealed housing. The camera can be focused from outside the housing by a structure which moves the camera horizontally while the lens remains stationary. By moving the camera toward and away from the object to be viewed, the camera can be focused by the user at a location remote from the pressurized vessel. There is also a plate connected to the camera which can be rotated to thereby align the camera to ensure that a level image is obtained.

Abstract: A film handling arrangement is disclosed for sheet film view cameras which includes an audible level alarm system. A combination camera back is disclosed which includes devices for motor-driven loading and unloading of disposable package envelopes with sheet film, light exposure meters, and optional video image devices.

Abstract: A rotary valve for brass wind instruments with improved lubricating and durability properties is provided. The valve body 2 or both the valve body 2 and casing 1 of the rotary valve comprise(s) a machinable ceramic-resin composite material. The rotary valve can be readily produced by a method which comprises impregnating a machinable ceramic article containing substantially continuous micropores with a liquid resin material and hardening the resin material; machine-processing the resulting machinable ceramic-resin composite article into a shape of the valve body or shapes of the valve body and casing; and assembling the valve body into a rotary valve having the valve body 2 of the composite material rotatably contained in the casing 1 of the composite material or a metal material.

Abstract: In order to eliminate the disadvantages due to varieties of a string-striking speed (i.e., dynamic characteristic) of a hammer, a hammering operation control unit is applied to a piano accompanied with an automatic performance function which can reproduce a musical performance recording in advance. Based on a detected string-striking speed of the hammer which is driven by the reference drive value predetermined to each key, the hammering operation control unit computes a deviation from the target string-striking speed corresponding to the reference drive value as a compensation value. Then, the newest computed compensation value is stored in a memory device or medium such as a floppy disk by periodically renewing the stored compensation value. Based on the stored compensation value, the string-striking speed of the hammer is to be compensated.

Abstract: An apparatus is set forth including a central housing formed with a series of release buttons directed through an upper surface of the housing cooperating with grooves formed in forwardly extending drum sticks to selectively secure and release the drum sticks from the housing to vary the number of drum sticks secured by the housing to accordingly effect drum harmonics during play of a drum instrument. The organization further includes a longitudinally aligned, rearwardly extending handle formed with a thumb rest mounted thereon and a counter-weight positionable and mounted to a rear terminal end of the handle to accommodate and counter-balance the housing weight and varying drum stick weight, dependent on the number of drum sticks secured to the housing.

Abstract: A film assemblage includes a film cassette having opposed forward and rear walls and a spring platen which resiliently engages a stack of film units to urge them toward the forward wall. A coupling is provided for coupling the spring platen to the rear wall such that the two remain coupled to each other during the period that the spring platen is in an unstressed or non-compressed state.

Abstract: A camera having a real-image viewfinder incorporating an optical finder system having the functions of an optical system for automatical focusing or an optical system for automatic exposure. The optical finder system comprises an objective lens having a positive power, an eyepiece, and an optical system such as porro mirror, disposed between the objective lens and the eyepiece and comprising a plurality of mirrors and/or a prism. Some of the mirrors a semitransparent mirrors capable of dividing the incident light for two optical paths. One part of the incident light is transmitted to the eyepiece and the other part of the incident light is transmitted to light receiving elements, which are disposed in substantially conjugate planes with respect to the focal plane of the objective lens, respectively for distance measurement and light measurement.

Abstract: A magnetic head is mounted directly on a camera film platen which is supported for limited constrained movement to maintain a precise relationship between an information track and a film edge. The platen serves to maintain film flatness while providing the desired relationship between the magnetic head and film edge.

Abstract: A camera with a flash device comprises: flash emission means, regulating means for regulating the irradiating angle of the light from the flash emission means, the regulating means having at least a first state and a second state wherein the irradiating angle in the first state is wider than that in the second state, a photographing lens, displacing means for displacing the flash emission means between a first position and a second position which is more distant than the first position from the optical axis of the photographing lens, a drive shaft to be rotated by a motor, and transmission means for transmitting the rotation of the drive shaft to the regulating means in case of the rotation of the drive shaft in a direction, and transmitting the rotation of the drive shaft to the displacing means in case of the rotation of the drive shaft in the other direction, whereby the regulating means is adapted to shift from one of the first and second states to the other in response to the rotation of the drive shaft

Abstract: Sheet film cassette with loaded/unloaded indicator in the form of a member slidable vertically with respect to the film plane and mounted in the portion of the cassette that positions the film and opposite the exposure window, such that the outer end of the slidable member is flush with the outer surface of the cassette in the loaded condition, and is recessed within the outer surface in the unloaded condition. A labyrinth mounting for the member provides light-tightness.

Abstract: A pad for use in a pad cup positioned over an opening in a musical instrument, the pad having a seal element which initially forms an impression of the rim of the opening and fixes the impression. The pad further includes a support member which carries the seal element to securely position the impression relative to the rim to seal the opening when the pad is brought to bear against the rim. The support element also damps vibrations generated when the seal element contacts the rim.

Abstract: A wind chime of the type in which a clapper strikes individual ones of a group of resonant vertical tubes incorporates an adjustable support for enabling the position of the clapper to be easily changed on the strand on which the clapper is hung to thereby change the tone or to effectively silence the chime.