Shock starting type simplified phonograph

• US 4,209,174 A
• Filed: 05/29/1979
• Issued: 06/24/1980
• Est. Priority Date: 02/28/1979
• Status: Expired due to Term

• Current Assignee: Yutaka Shiseki
• Original Assignee: Yutaka Shiseki
• Inventors: Shiseki, Yutaka
• Primary Examiner(s): Stephan, Steven L.
• Application Number:
  US06/043,318
• Time in Patent Office: 392 Days
• Field of Search: 274/1 A, 46/117, 46/175 AR
• US Class Current: 369/67
• CPC Class Codes: G11B 3/001 with vibrating mechanical coupling means between pick-up element and sound producing element
• CPC Class Codes: G11B 33/06 combined with other apparatus having a different main function

Abstract

A weight means disposed in a casing of a phonograph is capable of being swung and urged normally in a predetermined direction. The weight means is associated with a lifting means. The lifting means is able to mechanically lift a sound transmitting member to move it in a direction away from a record disc against which, said transmitting member is urged under stylus force by means of a stylus force spring.

According to this simple and correct mechanism, the stylus force exerted on the sound transmitting member is released by means of a shock without fail. Hence, a pickup will return to a starting point of sound reproduction by a return spring. The weight means is then able to return to its original location so that the necessary stylus force may be imparted again to the pickup through the sound transmitting member.

Claims

1. A shock starting simplified phonograph, comprising:

(a) a casing,

(b) a tone arm disposed in the casing,

(c) a pickup attached to the tone arm,

(d) a reproduction stylus connected to the pickup,

(e) means for pivotally mounting the tone arm disposed in casing, the pivot means enabling the tone arm to be swung such that the stylus can trace a rotatable record disc,

(f) a record disc having a starting point and a terminal point of sound reproduction,

(g) means for rotating the record disc,

(h) means for normally urging the tone arm toward the starting point of sound reproduction of the record disc

(i) means for stopping the means for rotating when the tone arm reaches the terminal point of sound reproduction,

(j) a speaker unit comprising;

(1) a sound transmitting member swingably mounted in the casing, the sound transmitting member urging the pickup against the record disc,

(2) a speaker for converting the vibrations generated by the sound transmitting member into audible sound,

(3) means for biasing the transmitting member to urge the pickup against the record disc

(k) a weight, the weight being normally urged in a predetermined direction, the weight being movable in a direction opposite to the predetermined direction in response to a shock imparted the phonograph to enable a starting thereof, and

(l) a mechanical means for lifting the pickup and cooperating with the weight for returning the pickup to the starting point of sound reproduction against the bias of the sound transmitting member biasing means.

2. The phonograph of claim 1 wherein:

the means for rotating comprises a motor and a source of power for operating the motor.

3. The phonograph of claim 2 wherein:

the source of power comprises a source of electrical energy.

4. The phonograph of claim 3 wherein:

the means for stopping comprises a normally closed switch in electrical communication with the source of energy and the motor, the switch being opened to break electrical communication between the motor and the source by the force of the tone arm upon engagement therewith.

5. A simplified phonograph of shock starting type as claimed in claim 1 wherein:

(a) the weight means is disposed in proximity to a front face of the speaker, the weight being capable of being swung laterally in the two opposite directions,

(b) the sound transmitting member and the speaker comprise an integrally formed speaker unit,

(c) the lifting means comprises;

(1) an upwardly facing cam piece movable in two opposite directions and

(2) a projection provided at peripheral rim of said speaker, the projection extending on the locus of the swing motion of said cam piece,

(d) the phonograph further comprising a turn table onto which the record disc is mounted, and

wherein the cam piece is movable along and over the turn table.

6. A shock starting simplified phonograph as claimed in claim 1 wherein:

(a) the weight means is swingably disposed such that it may liftingly scoop up the speaker at one side edge thereof,

(b) the sound transmitter and said speaker are assembled together to define an integral unit; and

(c) the lifting means comprises;

(1) an upwardly facing cam face disposed on said weight means and

(2) a part of a lower peripheral rim of said speaker.