Abstract: A stylus for stereo pickups tracking acoustic events mechanically recorded in grooves of a plate shaped record carrier comprises a soft iron tube which is adapted to embody a transducer and which has an open end into which a needle support tube is engaged and secured such as by adhesive connection. The needle is carried by the support with its axis substantially perpendicular to the axis of the support tube at the outward projecting end of the tube. The soft iron tube and the support tube are engaged in an opening of a support plate and embraced by a first elastic element engaged in the opening and elastically engaged with the soft iron tube. The construction includes a second elastic element engaged around a portion of the soft iron tube and the support tube at a location adjacent the open end of the soft iron tube and forms a damping body of a material of high internal friction.

Abstract: A magnetic or optical disk load/unload device for automatically centering and clamping a disk to the spindle of an information storage device. The apparatus is comprised of a toggle arm, a toggle arm rotating device, a support base, a support hub having a centering stem and a concentric annular steel ring disposed on its mating surface, a member for clamping the hub to the support base, a spindle having a centering hole on its mating surface and a concentric magnetic material ring on its mating surface, and a spindle rotating motor. In operation, the toggle arm is rotated from a first bent position causing the support base hub and disk located thereon to advance toward the spindle, the hub slidably retained on the base by a of clamping member activated by a cam assembly. Upon full extension of the toggle arm, the hub and disk are centered on the spindle, clamped to same by the magnetic and steel rings.

Abstract: In the vibration system of a pickup cartridge of a record player, the object of preliminarily applying a required deforming bias, in a direction opposite to the direction of the vertical tracking force, to the damper which deforms with the application of a vertical tracking force, and of releasing this deforming bias when the stylus is actually applied with a vertical tracking force, is achieved by arranging the cantilever-supporting tension wire which pulls the cantilever in the rearward direction, so as to pass through the damper at a position eccentric relative to the center of this damper which is disposed between the armature-carrying cantilever and the tension wire holder.

Abstract: A device for raising and centering 45 r.p.m. records on a standard turntable having a central spindle. The device fits around the spindle and completely fills the large hole of 45 r.p.m. records. Four radially outwardly extending lifting arms project through corresponding slots made in the cylindrical housing of the device. A vertically displacable circular cap is mounted at the upper portion of the housing and is adapted for manual depression. The internal construction of the cap and housing is arranged to raise the arms and a record lying thereon by lever action when the cap is depressed against the inner portions of the arms.

Abstract: A phonograph cover is coupled to a tone arm assembly such that movement of the cover to its open position automatically retracts the needle of the tone arm assembly from the record in any selected position of the tone arm assembly on the record playing portion of the record. Movement of the cover to its closed position automatically causes the needle to engage the record in any selected position of the tone arm assembly on the record playing portion of the record.The tone arm assembly is further coupled to the phonograph turntable drive means such that the drive means is actuated upon movement of the tone arm assembly onto the record playing portion of the record. The drive means is deactuated upon movement of the tone arm assembly to a rest position located outside of the playing portion of the record.

Abstract: A continuous repeating type simplified sound reproducing device including on its casing, a fixed locking lever having a locking face parallel to the plane of rotation of a record disc and a rotating locking lever on the record disc which rotates together with the record disc and is able to enter under the locking face of the fixed locking lever only when the record disc is placed at its retracted position. At least one of the locking faces of the two locking members are arranged to have a face length corresponding to the angle of rotation sufficient to maintain the record disc at its retracted position until the record disc has completely returned to the starting point of sound reproduction. By virtue of this construction, satisfactory returning motion of this continuous repeating type sound reproduction device can be assured by a comparatively simplified construction.

Abstract: To load a record into the player, a caddy is inserted into the player and then withdrawn, thereby leaving the enclosed record inside the player resting on a pair of front and back receiver pads. As the pickup carriage moves toward the turntable for playback, the record is lowered to the turntable for rotation therewith without hindrance from the receiver pads. As the carriage is driven back to a standby position after playback, the record is transferred back to the receiver pads for retrieval.

Abstract: This invention relates to a device at projectors, which are provided with a lens barrel (1) vertically movable perpendicularly to the optic axis of the lens, and with a lighting arrangement (12), which is mounted rotatably and coupled via one or several hinged arms to the moving means for the lens barrel, so that optimum lighting through the slide to the lens is obtained. According to the invention, the hinged arm comprises two co-operating portions, a lens arm (3) and a lighting arm (13). The lens arm extends from a guide pin (2) on the lens barrel rearward to the slide plane where it is hingedly united with a sector arm (5). The joint (4) between the lens arm (3) and sector arm (5) is rigidly connected to the sector arm and in the lens arm (3) movable in a groove (8). The lighting arm extends from the lighting arrangement (12) forward to and a distance past the slide plane. In the slide plane the lighting arm is pivotally mounted in a joint (4 ) attached on the projector chassis.

Abstract: A loading device for a recording and/or playback apparatus, for example, a record-disc player or a tape cassette apparatus, comprises a movable loading support onto which a holder containing a record carrier can be slid by feed rollers driven by a motor. The loading support is slidably supported between two fixed, parallel, vertical guide plates by pins on the support sliding in L-shaped guide slots in the guide plates, each slot having a vertical section extending downwardly from a horizontal section. Slidably supported on the outer sides of the guide plates for horizontal movement in vertical planes parallel to the planes of the guide plates are two drive plates having inclined slots in which the pins on the loading support slidably engage.

Abstract: For loading a record disc on the turntable of a record-disc player, a loading device is provided which comprises a movable loading support for supporting a holder containing a record disc. The loading support is slidably supported between two fixed, parallel, vertical guide plates by pins on the support sliding in L-shaped guide slots in the guide plates, each slot having a vertical section extending downwardly from a horizontal section. Slidably supported on the outer sides of the guide plates for horizontal movement in vertical planes parallel to the planes of the guide plates are two drive plates having inclined slots in which the pins on the loading support slidably engage. By cooperation between the inclined slots and the pins the drive plates can move the loading support, guided by the L-shaped slots in the guide plates, along a horizontal path and down a vertical path to deposit the record disc supported on the loading support on the turntable.

Abstract: As a caddy is inserted into the player to load a record therein, it displaces the carriage locking lever to its retracted position to release the carriage. The record retaining spine of the caddy holds the carriage locking lever at the retracted position thereof as long as the record/spine assembly is inside the player. Upon removal of the record/spine assembly from the player, the carriage locking lever moves to its advanced position to arrest the carriage.

Abstract: The player is provided with a pair of spaced apart spine latching members which hook up with an inner record retaining spine as a caddy is inserted into the player so that when the outer jacket is withdrawn, the record/spine assembly is retained inside the player. A caddy overtravel mechanism prevents a selected one of the latching members from latching up the spine until the other latching member is also in position to capture the spine. A rigid coupling member interconnecting the latching members precludes the other latching member from capturing the spine until both latching members are ready to latch up the spine to assure simultaneous latching of the spine.