Abstract: Disclosed is a starting device for a toy motor using an ultrasonic wave signal. The starting device comprises a transmitter external to the toy which generates an ultrasonic wave signal and a receiving and starting element disposed within the toy for receiving the transmitted ultrasonic wave signal and starting the toy motor. In a preferred embodiment, the motor drives a sound reproducing device. The ultrasonic wave signal from the transmitter is received, amplified, and detected, and when the detected output reaches a predetermined level, a switching transistor forming an energization path to the motor is turned on to start the motor. Once the motor is started, a self-holding switch associated with the switching transistor causes the switching transistor to supply continuous current to the motor even when the transmission of the ultrasonic wave signal has been terminated.

Abstract: A slit for inserting a record disc is formed through a casing of a selective play type of sound reproduction device and made parallel to a record disc carrying face of a turn table inside the casing. A sound transmitting member carries a pair of stylus force releasing projections disposed at the inlet portion of the slit. Within the casing, a centering projection is positioned and resiliently supported near the center of the slit. Both the centering projection and the stylus force releasing projections extend to intersect the slit. A resiliently protruding record disc locking projection is disposed on the record disc carrying face, while the record disc is formed to have a notch engageable with the record disc locking projection.

Abstract: A slit for inserting a record disc is formed to extend from one side of the casing toward the other side so as to establish continuous communication between both sides and being parallel to the record disc carrying face of the turn table. A sound transmitting member carries a pair of stylus force releasing projections, and within the casing, a centering projection is resiliently supported and aforesaid stylus force releasing projections are disposed at the inlet portion of the slit for inserting a record disc, at the further interior part of this slit, the centering projection is positioned so that the centering projection and the stylus force releasing projections can be extended to intersect the slit for inserting a record disc.

Abstract: A simplified sound reproducing device for randomly selecting recordings to be reproduced, having a free gear formed with one or more intermittent tooth portions with tooth crest in the direction of rotation longer than that of other normal teeth. The gear system which includes this intermittent tooth portion is constructed such that this portion can contact any one gear tooth among other normal teeth of the mating gear in the gear system including the free gear and a center gear disposed at the center of the record disc. When the swing arm approaches the end point of sound reproduction at the urging of pickup, the free gear can engage the center gear. A cam member is interposed between the record disc and sound transmitting member. The cam member has two cam pieces axially stacked one on another such that the total length of the cam member can be lengthened when the two pieces are twisted. One upper piece 7 is capable of engagement with the free gear.

Abstract: A simplified sound reproducing device having external output shafts disposed beneath the plane of rotation of a record disc and at positions corresponding to the starting point of sound reproduction of each record groove. Each of the external output shafts actuates predetermined external components for action corresponding to the content of the recorded item in the record groove. A transmission is provided for connecting a center pin to each of the external output shafts. The transmission includes a driving wheel fixed around the center pin, a revolvable bearing frame member which is journally connected for rotation with the center pin when under engagement with a coupling member, a planetary shaft carried by the revolvable bearing frame member, a planetary gear wheel supported by the planetary shaft capable of movement in an axial direction and rotated by meshing with the driving wheel.

Abstract: A simplified sound reproducing device having external output shafts disposed beneath the plane of rotation of the record disc at positions corresponding to the end point of sound reproduction of each record groove and which actuate predetermined external components corresponding to the record groove's recorded content previously reproduced. A transmission selectively connects a center pin to each of the external output shafts.

Abstract: A simplified sound reproducing device in which the stylus force of a reproducing stylus is imparted by a stylus pressure spring, the weight of the turn table being independently supported so that only the weight of the stylus and related tone arm are impinged upon the record to be reproduced. The stylus force imparted by the stylus pressure spring permits the stylus to remain in contact with the record disc following its undulations and reproducing high quality sounds.

Abstract: A sound reproducing device for use in dolls, toys and the like includes first and second movable contacts and a fixed contact mounted within a casing. The second movable contact normally engages the fixed contact to complete a first circuit between a power source, a first motor, the second movable contact and the fixed contact to energize the first motor to rotate a record disc. The first movable contact is engaged by the tone arm of the sound reproducing device when the tone arm reaches the end point of sound reproduction and is urged into contact with the second movable contact moving the second movable contact out of contact with the fixed contact disconnecting the first circuit and completing a second circuit between the first and second movable contacts, the power source and a second motor for energizing the second motor to drive the doll, toy or the like.

Abstract: A stopper projects radially outward from the periphery of a rotary turn table and a plurality of selection poles are disposed such that any one of the selection poles, when depressed, projects into the locus of rotation of the stopper. A spring fabricated to have energizing pieces, the same in number as the number of selection poles, is positioned within a casing so that two mating parts can engage with each other. Each energizing piece is made electrically conductive and the spring also urges each selection pole toward the outside of the casing. A metal guide plate holds the selection poles 16 which are disposed along the periphery of the turn table within the casing and further guides the selected selection pole into the locus of rotation of the stopper. The selected selection pole will urge corresponding spring into engagement with the guide plate.

Abstract: A movable contact 4 is fabricated of a spring wire, the halfway portion of which is wound around a pin 5. One lengthwise end of the wire rests on a casing and the other lengthwise end is rested at the halfway portion of an L-shaped lever 6 received by the pin 5, the pin being coaxial with the movable contact 4. A fixed contact 7 is disposed at a position where it can engage the movable contact 4 at its portion halfway between the point rested on the lever 6 and the portion being wound around the pin. A portion or arm of the lever 6 can extend toward and contact a pickup 3 returned to the starting point of sound reproduction. That portion of the lever 6 is spaced from the pin 5 a distance longer than the part or arm of the lever 6 associated with the movable contact 4. By virtue of this construction, the device is able to perform exact switching action without requiring any particular delicate adjustment in connection with the resilient force of each return or coil spring 1.

Abstract: A simplified sound reproducing device having a record disc 5 having a plurality of record grooves is driven by a constant torque spring motor 2. A turntable 3 and the record disc 5 are frictionally assembled so that relative slippage occurs between them in the direction of their rotation when an extra force is applied to the system. A sound reproducing member 10, applying a stylus pressure to a pickup 6, has a holding piece attached thereto which contacts the reverse face of the record disc 5 and stops its rotation when the sound transmitting member 10 is lifted up by tension exerted by a stretched pull string 14, when the string 14 is pulled to wind the constant torque spring motor. By virtue of this construction, the angle of rotation of the turntable 3 and the record disc 5, are shifted from each other so that the introductory part of the record groove, next to the one just completed, can be placed under the pickup 6 now returned to the starting point of sound reproduction, and played.

Abstract: An acoustic playback device includes a plurality of selector bars equal to the number of recording grooves, a plurality of biased stylus-pressure releasing bars, the bars moving against the force of the associated spring as the corresponding selector bar is pushed into engagement with a stopper pin on the record disc to bring the introductory portion of the selected recording groove to a position where it can be engaged by a pickup. A latch plate is axially spaced from the reverse side of the record disc unit. An annular vertical wall is formed on the surface of the latch plate facing the record disc unit. Hooks on the stylus-pressure releasing bars engage the vertical wall when the stylus-pressure releasing bars are moved forward. Stylus-pressure releasing portions formed on the ends of the stylus-pressure releasing bars engage the stopper pin when advanced with the stylus-pressure releasing bars.

Abstract: In a simplified sound-reproducing device, a motor is coupled by a transmission to a record disc for driving the record disc and an external output shaft extending outside from the casing of the device.Transmission consists of a driving wheel fixed to an extension of a center shaft and a follower wheel fixed to the output shaft which is disposed parallel to the center shaft. The driving wheel and the follower wheel are arranged to either mesh or not mesh with each other depending on their relative relationship in the axial direction by caused axial shifting of the center shaft.Virtue of the construction as mentioned above, the device can drive, by relying on the driving motor alone, another device or attachment subsequent to or concurrent with sound reproduction.

Abstract: A simplified record player having a fixed record member and a rotatable turn table carrying a sound reproducing stylus which rotates together with the turn table. Until the record is positioned on the record holding portion of the player, the reproducing stylus is disposed in a recessed portion or an opening so as to be shielded from the outside. When the record is positioned and fixed to the record holding portion, a projecting rod attached to the center of the record pushes a pusher placed about the center pin of the player such that the pusher advances along the center pin. By a wedge action given by an inclined face of the head of the pusher, a tone arm carrying the reproduction stylus is pushed outward so that the reproduction stylus can be positioned to confront the recorded face of the record. By virtue of this construction, the design defect of injuries to an operator's body by an exposed stylus can be entirely prevented.

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: The sound-reproducing device for playing the record disc has a number of selection poles corresponding to the member of recorded grooves and a stylus force releasing wheel normally urged to a specific direction but which rotated by one of the selection poles to release stylus force on a pickup. The stylus force releasing wheel includes a locking arm confronting the back face of the selection pole in an advanced position for pushing the inclined face of the releasing wheel. Each of the selection poles has a jaw which catches the locking arm and prevents the selection pole when in an advanced position from retraction. A locking device locks the stylus force releasing wheel at the position to which the wheel has rotated. A record disc unit includes a turn table and a record face member disposed in a stacked but axially separable arrangement. A stopper pin is disposed on the record face member.

Abstract: The invention relates to a device and method of using the device and plastic injection molding processes. A mold is provided utilizing a core inside the injection cavity of the mold. The core is prior to insertion of the mold subjected to a sub-freezing atmosphere. The core is then placed in the mold cavity wherein is injected the plastic material to mold the plastic part substantially surrounding the core. A thin film of air is formed around the "core" at the time of the injection of the plastic material thereby providing a substantial increase in surface finish to the plastic molded part. The core is made from a material which when heated will melt prior to the melting of the plastic part so that the core and part are removed from the cavity and subjected to a heating step thereby enabling removal of the core from the part.

Abstract: A winding knob and a winding wheel are supported around a center shaft and are rotatable together in the direction of winding and are also axially movable together without causing axial movement of the center shaft by pushing ahead the winding knob. Between a record disc being urged toward a pickup and movable along the center shaft and the winding wheel, there is provided a slippage preventing post which is placed into engagement with a retaining piece provided on the reverse face of the record by operator's winding motion while depressing the knob but is released from such engagement by the operator's subsequent depression of a starting post and the movement of the record disc away from the pickup. When the record disc returns to its initial position by the operator's releasing of depression, the slippage preventing post moves out of engagement with the locking piece.