Miniature apparatus for reproducing sound from a stationary record
AssigneeMontron Corporation
InventorsRonald D. Irvin, Steven Richard Runyan
Life of this patent
Estimating the term…
Abstract
Miniature apparatus for reproducing sound from a stationary record which comprises a base and a main shaft mounted on the base. A disc-like member is rotatably mounted on the main shaft and means is carried by the base for rotating the disc-like member. A cartridge having a stylus therein adapted to engage the record is provided. An arm assembly carries the cartridge in one end thereof and means is provided for mounting the arm assembly on the disc-like member to permit swinging motion of the arm assembly about horizontal and vertical pivot axes. The disc-like member has an arcuate slot therein through which the stylus can extend to engage the record.
Claims19
In an apparatus for reproducing sound from a stationary record, a base, a main shaft mounted on the base, a disc-like member mounted on said main shaft, means carried by said base for rotating said disc-like member, a cartridge having a stylus therein adapted to engage the record, an arm assembly carrying said cartridge in one end thereof, means mounting said arm assembly on said disc-like member to permit swinging motion of said one end of said arm assembly about horizontal and vertical pivot axes, said disc-like member having an arcuate slot therein through which the stylus can extend to engage the record, coounterbalance means carried by the arm assembly so that the arm assembly is counterbalanced about its pivot axes, counterbalance means carried by the disc-like member counterbalancing the disc-like member for the mass of the arm assembly and its counterbalance means, means yieldably urging said arm assembly and the cartridge with its stylus in a direction to move the stylus into a position whereby it may engage the record in any the stylus into a position whereby it may engage the record in any position of and the arm for moving said arm and the cartridge carried thereby with its stylus out of engagement with the record and for returning it to and retaining it in an at-home position latch means carried by the base for latching said disc-like member to prevent rotation of the same when said arm assembly is in said at-home position and push button means carried by said base and movable to a position to release said disc-like member to permit rotation of the same and to cause operation of said means carried by said base for rotating said disc-like member and for releasing said arm assembly to permit the cartridge and the stylus carried thereby to move to a position whereby the stylus can engage the record.
In apparatus for reproducing sound from a stationary record, a base having a planar lower surface, a main shaft mounted in said base perpendicular to said surface, a rotor carried by said shaft and having a disc-like member carried by said shaft and disposed in a plane parallel to the surface of the base, said rotor also having an upstanding rim generally perpendicular to the surface of said base, said rotor being substantially transparent, a window structure carried by said base and generally overlying said rotor, a motor resiliently mounted on said window structure, a pulley driven by said motor, resilient belt means interconnecting said pulley and said rotor for rotating said rotor as said motor is operated, a cartridge having a stylus and adapted to engage the record, an arm assembly carrying said cartridge in one end thereof, means mounting said arm assembly on said rotor to permit swinging movement of said one end of said arm assembly about horizontal and vertical pivot axes, said disc-like member of said rotor having an arcuate slot therein through which the stylus of the cartridge can extend to engage the record over which the base is disposed, spring means carried by the arm assembly for yieldably urging the arm assembly in a direction so that the stylus is yieldably urged through said arcuate slot into engagement with said record, an arm latch pivotally mounted on said base, said arm latch and said arm asssembly being provided with cooperative means including a cam surface and a pin for moving said arm assembly and the cartridge carried thereby into and out of the arcuate slot, rotor latch means pivotally mounted on the base, said rotor latch means having means for causing de-energization of said motor and for latching said rotor in a locked position and means carried by the base for causing movement of the arm latch and the rotor latch to release the arm assembly to permit the cartridge with the stylus to extend through the arcuate slot to engage the record and to release the rotor to permit the rotor to be rotated.
Dependencies are inferred from the claim text.