US1821632A - Talking machine - Google Patents

Description

Sept, 1, 1931. J. GEORGE ET AL TALKI NG MACH I NE Filed May 31. 1929 2 Sheets-Sheet 1 Sept. 1, 1931. J. GEORGE ET AL 1,321,632

I TALKING MACHINE Filed'M ay 51. 1929 2 Sheets-Sheet 2 M we 10 MM win: 0d .0!

I W, Mano TJAAZZEW (Biol-mgr.

Patented Sept. 1, 1931 UNITED STATES PATENT OFFICE JOHN ISAAC GEORGE, OF HAYES, AND EDWARD CHIFFEY, OF SOUTH HARROW, ENG- LAND, ASSIGNO'RS, BY MESNE ASSIGNMENTS, TO RADIO CORPORATION OF AMERICA, OF NEW YORK, N. Y., A GORTORATION OF DELAWARE TALKING MACHINE Application filed May 31, 1929, Serial No. 367,466, and in Great Britain July 11, 1928.

ord, and todrive mechanism for ejecting the played record and feeding a new record to the playing position.

According to the invention a talking machine is provided having two motors one of which is arranged to drive the turntable at:

all times while the other is stationary during ordinary playing, and is brought into action so that its drive is added to that of the main motor only when work in addition to the driving of the turntable is to be performed. The second or auxiliary motor is preferably geared to the mechanism, which effects the I additional operations, in such a manner that the said mechanism is always tending to move under the urge of that'motor. Thus the drive of the second motor commences to take effect as soon as the mechanism is freed to move.

The invention is illustrated in the accompanying drawings as applied to an automatic talking machine of the kind in which the various automatic operations are effected through cams on a cam shaft which is rotated when one record has been played and another is to be substituted, to carry out a cycle of automatic operations.

In the drawings, Fig. 1 is a plan view of the two motors arranged within a single casing, the casing cover being removed.

Fig. 2 is a plan View with the casing cover in position and showing the method of coupling the motors to the mechanism to be driven.

Fig. 3 is a view in elevation.

Referring to the drawings, 1 and 2 represent the two spring barrels of a double spring motor of ordinary type, the spindles .3, 4 of which are mounted in bearings in the body 7 5 and cover 6 of a motor casing.

The barrels 1, 2 are coupledin the usual manner'bygears 7, 8 and the usual turntable 11, 12 at the lower end of an intermediate spindle 13, and a gear wheel 14 at the lower end of the turntable spindle 9.

On the turntable spindle 9 (Fig. 1) is also carried a spiral pinion 15 which engages and drives a centrifugal speed governor 16 of usual form mounted in bearings in the casing.

The automatic operations are carried out in known manner by means of cams (not shown) on a cam shaft 17 mounted in bearings on the machine and the cam shaft 17 is driven from the turntable spindle 9 through a gear train which'includes a clutch adapted to "be operated intermittently to transmit drive from the spindle 9 to the gear train.

The clutch comprises a plate 18 freely mounted on the spindle 9 and a curved lever 19 pivotally'mounted at 20 on the plate 18. A spring 21 is connected between the curved lever 19 and a pin 22 on the plate 18 and this spring tends to move the lever 19 about itspivot 20 into a position where a tooth 23 on the lever engages between teeth of a toothed wheel 24 pinned to the turntable spindle 9. The plate 18 is normally that is to say during playing of the machine, held stationary in the position shown in Fig. 2,

with the tooth 23 disengaged from wheel 24 by the engagement of ,theend of lever 19 with the end of a lever 25 pivoted at 26 on the machine. The lever 25 is adapted to be rocked at intervals inknown manner, as by a reversal of the direction of the sound arm when the end of a record is reached, to permit lever 19 to rock under the pull of spring 21 and the clutch to be put in.

When the clutch is in, the drive is transmitted from spindle 9 to the camshaft 17 by way of a gear wheel 27 formed on the underside of plate 18 intermediate gear wheels 28, 29 integral with one another and a gear wheel 30 rigid with the cam shaft 17.

The auxiliary motor comprises a spring barrel 31 on a spindle 32 mounted in bearings in the casingand on the. lower side of the barrel 31 is carried a gear wheel 33 which meshes with a gear 34 at the lower end of a spindle 35 also mounted in hearings in the casing. The upper end oi": spindle 35 extends above the casing cover 6 and carries, rigidly mounted thereon, a gear wheel 36 (Fig. 2) which meshes with the gear wheel 30 rigid with the camshaft 17. It will thus be seen that while the machine is playing and the clutch is out as shown in Fig. 2, the

auxiliary motor 31 is held stationary by vir- 4 tue of its connection through the gearing 33,

r 34, 36, 30, 29,28, 27 with the stationary clutch plate 18. Immediately lever 25 is rocked and lever 19 moves about its pivot 20 to clutch the platelS to spindle 9, camshaft 17 begins to rotate and the auxiliary motor 31 commences to drive.

Means may be provided to permit both the main and auxiliary motors to be wound up together by means of one winding crank, such means being fully described in our copending application-Serial No. 367,465, filed "May 31; 1929,

We claim:

1. In a talking machine of the type embodyi-ng a turntable and automatic mechanism for performing; operations additional to 1 driving said turntable, the combination of amotor drivingly connected with said turntable, means for drivingly connecting said motor with said mechanism, and anauxiliary motor drivingly connected with said mechanisln and adding its drive to that of said first named motor when said mechanism is in operation.

2. In a talking machine of the type emlbodyina a turntable and automatic mecha- Insm for performing operations additional to drivingsaid turntable, the combination of a spring motor drivingly connected withsaid turntable, means for drivingly connecting said motor with said mechanism, and an auxiliary spring motor driving'ly connectedwith said mechanism and adding its drive to that of said first motor when said mechanism is in operation.

3. In a talking machine of the type embodying a turntable and automatic mechanism for performing operations additional to driving said turntable, the combination 7 ota motor drivingly connected with said turntable, means for drivingly connecting said motor with said mechanism, and an auxiliary'spring motor drivingzly connec ed to said mechanism and held stationary thereby'when said mechanism is out of operation,

said member is drivingly connected with and driven by said first named motor.

6. In a talking machine, a turntable spin die, a d riving motor connected to rotate said tur" table spindle, rotatable member for performing operations in addition to rotating said spindle, means for drivingly connecting said rotatable member and motor, and a secondary spring); motor geared to said rotatable member so that it always tends to drive said member.

7. In a talking machine, a turntable spindlega drivinginotor connected to rotate'said spindle, a rotatable member for performing operations additional to rotating said spindle, means-tor clutching said rotatable member to said spindle, and a secondary spring motor drivingly connected with said rotatable member, said spring motor tending to actuate said member to perform said operation but being held by said member when the latter is declutched from said spindle, whereby the drive of the secondary motor is added to that of the driving motor when said rotatable member is clutched to said spindle.

In testimony whereof we have signed our names to this specification.

' JOHN ISAAC GEORGE.

EDYVARD CHIFFEY.

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