US957004A - Talking-machine. - Google Patents

Description

H SHEBLE & T. KRABMER.

TALKING MACHINE.

APPLICATIO N FILED DBO. 21, 1908.

957,004. Patented May 3, 1910.

INVENTORSt wmwww i ATTORNEYS UNITED STATES ENT OFFICE.

HORACE SHEBLE AND THOMAS KRAEMER, 0F PHILADELPHIA, PENNSYLVANIA, AS- SIGNORS 'IO HAWTHORNE & SHEBLE MANUFACTURING COMPANY, OF PHILADEL- PHIA, PENNSYLVANIA, CORPORATION OF PENNSYLVANIA.

TALKING-MACHINE. 1

Specification of Letters Patent.

Patented May 3, 1910.

Application filed December 21, 1908. Serial No. 468,559.

To all whom it may concern:

Be it known that we, Holman SHEBLE and THOMAS Knamwn, both citizens of the United'States, and both residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Talking-Machines, of which the following is a specification.

This invention relates to talking-machines,

' and its object is to provide a machine of an improved form, the improvements being 7 directed particularly to the construction of the reproducing apparatus.

In accordance with the invention, the diaphragm of the'reproducing apparatus, while being vibrated by the stylus, is located at a distance from the stylus, a rocking-bar being provided, to one end of which the stylus is connected and which adjacent to its other end is provided with an arm coacting with the diaphragm of the sound-box so as to vibrate the latter.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is an elevation of a portion of a f talking-machine; Fig. 2 is a top View of the reproducing mechanismyand Fig. 3 is an end view of the same.

Referring to these drawings, 1 indicates the motor-box of a talking-machine, within which is mounted a motor of the usual or any suitable type, this motor being arranged to rotate a vertically-dis osed shaft 2 projecting throu h the top 0 the box. Secured upon the sha t 2 is a turn-tab1e 3 adapted to support a sound-record 4 which is in the form of a disk. Secured to the side of the box 1 and projecting outwardly and upwardly therefrom is an arm 5 formed so as to provide an o enin extending through the upper portion t iereo An amplifying horn 6 is adapted to be detachably mounted upon the upper end of the arm 5, the opening through the horn being in communication with this opening formed in the arm 5. Adjacent to the inner end of the opening through arm 5, is a vertically-disposed pin 7.

The reproducing mechanism comprises a sound-box 8 having a diaphragm 9 mounted therein in the usual 'manner. Projecting from the side of the box 8 opposite the diaphragm 9 is a tube 10 bent to a curvature of ninety degrees. To this tube is secured a yoke 11 having a cross-head 12 pivoted therein on horizontal pivots. This cross head carries a sleeve 13 .which is adapted to fit over the in 7.

The soun box 8 is provided with a short downwardly-extending arm 14 and a long horizontally-extending arm 15, and a rod or shaft 16 is mounted upon these arms with its ends extending into openings formed therein, so that shaft 16 may rock upon its axis. A spring 17 is coiled about the rod 16 and has one end secured to the rod and the other secured to the arm 15 so that when the rod 16 is rocked in one direction and then released it will be brought back to normal'position by the tension of spring 17. Seemed to the rod 16 adjacent to its outer end, is a holder 18 for a stylus 19, this'holder having a bore into which the end of the stylus is inserted and a set-screw 20 for holding the stylus securely in this bore. Adjacent to the end of rod 16 oppositethat to which holder 18 is secured, is an upwardly-extending arm 21, the free end of which bears against the center of the diaphragm 9 of the sound-box.

'ith the parts constructed and arranged as shown in Fig. l and the stylus 19 in holder 18 engaging the record-groove in a disk sound-record 4 on the turn-table 3, the rotation of the turn-table and record is begun and the stylus tracks in the record-groove in the usual manner. As it does so, it is vibrated by the undulating grooveqvalls and rocks the rod 16 in its bearings in accordance with these vibrations. As the rod 16 is rigid against torsional strains, the vibrations of the stylus 19 are transmitted faithfully to the arm 21 secured to rod 16, and by arm 21 to the diaphragm t) of the sound-box, and the sound-waves developed by the diaphragm 9 pass out through the tube 10, the

opening formed in the upper end of arm 5 and the horn 6. The reproducing devices, including the sound-box 8, tube 10, bar 16 and stylus 19, can swing freely about a vertical axis, in order that the stylus 19 may move across the sound-record, by the sleeve 13 turning upon pin 7. Also, the reproducing-devices may move up and down sufficient to compensate for irregularities in the smmd-record or turn-table, by turning about the horizontal pivots connecting the yoke 11 with the cross-head 12.

In order to secure a good reproduction, the weight downwardly upon the'stylusmust be SIIfllClGIlt to cause the stylus to track faithfully in the record-groove, and as the soundbox in the construction above described is not located directly over the stylus as in the machines heretofore commonly employed, a

, weight' corresponding more or less to the weight of the sound-box may have to be provided near the outer end of the armv15.

his may readily be done by enlarging the size of arm 15 so as to increase the weight table for a disk sound-record supported thereby, a su porting-arm extending upwardly from t e motor-box, a horn mounted thereon, a tubular member mounted on said arm to turn about a vertical axis and having an opening therethrougl in-fcommunication with the opening through the'hor'n,

a'sound-box rigidly secured to said member and communicating therewith, an arm-1 rigidly connected tosaid tubular member 'and sound box and projecting outwardly therefrom over the sound-record on said turn-- table, a'rock-shaft pivotally mounted at one end in a bearlng movable With said tubular member and at the other end in the endof; said arm distant from the sound-box, a

lever carried by said rock-shaft at one end thereof and coacting with the diaphragm of the sound-box, a stylus-support'carriedjby'f oslte end thereofyfl. stylus-lever and said rock-shaftv at the 0 a stylus carried by sai adapted to track in the groove of a record on said turn-table, and a spring acting on said rock-shaft to turn it in one direction, substantially as set forth.

This specification signed and witnessed this 18th day of December, 1908.

HORACE sHnBLE; THOMAS 'KRAEMER.

'Witnesses:

HARRY L. STONE, JOSEPH J. RosENBLU'rH.

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