US2079515A - Transcribing apparatus - Google Patents

Description

ay 4, 1937- c. G. LIGH 2,079,515

TRANSCRIBING APPARATUS Filed Dec. 28, 1935 Patented May 4, 1937 PATENT OFFICE TRAN SCRIBING APPARATUS Charles G. Ligh, New Dorp, N. Y., assignor to Electreporter, Inc., a corporation of Delaware Application December 28, 1935, Serial No. 56,555

11 Claim.

This invention relates to play back or reproducing mechanism of electrically recorded records of plate or disc type. The object of the invention is to provide a means whereby a transcribing typist may have repeated or replayed a portion of what is recorded upon such a disc record without braking or stopping either the disc or the rotary table upon which it revolves.

In transcribing from such disc, the typist, in the interest of accuracy, or for any other reason incident to his work, frequently finds it necessary to play back a repeat of a phrase, or one or several sentences immediately preceding the matter at the immediate point on the record which he has reached in the transcribing.

It has been found in practice that braking will not accomplish this, since if the disc is braked, it will stop at a point beyond that which is desired to hear repeated. To brake or stop the disc and then lift the reproducing needle from the groove and manually place it in a groove which has already been played so that it may be repeated, involves loss of time and the possibility of skippage if the needle be returned to a point on the disc further than that already transcribed.

I have therefore provided a means of electrically throwing the reproducing needle back laterally one or more grooves in the record, without either stopping the disc or lifting the needle therefrom. In this manner I accomplish the desired result and overcome the disadvantages hereinabove set forth, in a simple, efdcient, and practical manner.

The invention will be more clearly understood from the following description of the now preferred embodiment thereof as illustrated in the drawing in which 2 Figure l is a top plan view more or less diagrammatic of a disc -record and its sound groove, and of a reproducer arrracarrying in addition to the reproducer, a means according to the pres ent invention;

Figure 2 is a top plan view of said record, said reproducer arm, said reproducer and said means; and

Figure 3 is a sectional view taken through said arm just in back of said reproducer and said means and showing details of construction of said means and certain preferred adjuncts.

Similar reference characters refer to similar parts throughout several views of the drawing.

Since the record 5, which may be rotated on the usual table 6 is of the type wherein the beginning of the sound groove 1 is toward the center rather than near the outer edge of the record, and since with the sound groove as illustrated the record 6 rotates in the direction of the arrow a, the reproducer 9 is shown as presenting its needle at an inclination to the sound groove so as to slip along the same without digging into it during rotation of the record. A means of moving the needle when desired to a part of the record previously passed over so that such part of the record can be repeated, is also preferably inclined to the plane of the record but differently from the inclination of the needle. According to the record here shown as above described, the reproducer for such repeat will be moved past one or more convolutions or lines of the sound grooves toward the center of the record. I have found that a comparatively slight jolt to a part connected with the reproducer I in the direction last indicated will sufice if a fairly light weight reproducer is employed, such for instance as that known as the crystal type. This statement is not made to indicate that the comparatively slight jolt must necessarily be used, but merely to make plain that such a jolt-applying means as that which will next be described can be employed in carrying out the invention.

This jolt-applying means can be actuated at will in any desired way and by any suitable energizer, such, for instance, as is now preferred, electrically and magnetically.

This electrical means comprises a solenoid it having an inclination shown on the reproducer arm. This solenoid has its armature I2 normally resting by gravity on its bottom plate I3. This plate It may be provided with a rubber pad It against which the armature noiselessly comes to rest when it stops at being snapped upward to strike the top plate It on the solenoid. The striking of the upper end of the armature against this plate Mi imparts a jolt which throws the reproducer needle laterally of the lines of the down groove when a play back is desired. This action of the solenoid occurs whenever a switch I in a circuit I6 is closed, such circuit including a solenoid and a suitable source ll of electrical current.

In order that the operator may vary the jolt thereby to vary the amount of repeat desired, there is introduced in said circuit a variable resistance It, the setting of which resistance will of course control the force of the blow directed by the armature I2 against the top of plate I4 whenever the switch I5 is closed.

I claim:

1. In apparatus of the class described having a rotatable disc record provided with a sound groove and movable reproducing means in operative relation to said groove; means operable to jolt said reproducing means out of engagement with the record in a direction upwardly and toward the starting position of the reproducing means so that the reproducing means will engage another portion of the groove for play back.

2. In apparatus of the class described having a grooved sound record and reproducing means having a stylus engaging the said groove and movable through travel of the stylus in said groove, and means operable to jolt said reproducing means to move the stylus from one location in said groove to another location in said groove closer to its starting position for playback.

3. In apparatus of the class described having a grooved sound record, an arm movable relatively to the record carrying reproducing means having a stylus engaging the groove, and means carried by the arm operable to jolt said reproducing means to move the stylus from one location in said groove to a location in said groove closer to its starting position for play back.

4. In apparatus of the class described having a grooved sound record and reproducing means having a stylus engaging the said groove, an upwardly movable jolting element carried by the reproducing means, means on the latter means above the jolting element for'impact by the latter to move the reproducing means to move the stylus from one location in said groove to another for playback, and means operable to move the jolting element.

5. In apparatus according to claim 4 in which the jolting element on upward movement also moves toward starting position.

6. In apparatus according'to claim 4, a cushion beneath the jolting element and. engageable thereby.

'I. In apparatus of the class described having a grooved sound record and reproducing means having a stylus engaging the said groove, an arm carrying the reproducing means, a solenoid on said arm, a movable core in said solenoid, a part associated with the solenoid adapted for jolting abutment by said core to impart a jumping movement to the reproducing means to move the stylus from one location in said groove to another location in said groove for play back, and means operable to energize the solenoid.

8. In apparatus according to claim 7 wherein the longitudinal axis of the solenoid and core are inclined toward the starting position of the stylus.

9. In apparatus of the class described having a grooved sound record and reproducing means coacting with said groove, and means associated with the reproducing means operable to impart a jumping movement thereto to move it nearer starting position for playback.

10. In apparatus of the class described having a grooved sound record, an arm, reproducing means on said arm coacting with said groove,

and means operable to cause the arm and reproducer means to jump in its entirety closer to starting position for play back.

11. In apparatus of the class described having a grooved sound record, an arm movable relatively to the record carrying reproducing means having a stylus engaging the groove, a solenoid on said arm inclined toward the starting end of the groove, a core longitudinally movable in the solenoid, a cushion at the base of said core, abutment means engageable by the core through upward movement to jolt said arm and reproducing means to jolt the reproducing means to cause the latter to jump to dispose the stylus.- in another portion oi. the groove for playback; and means operable to energize the solenoid.

CHARLES G. LIGH.

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