US832703A - Phonograph. - Google Patents

Description

PATENTED OCT. '9, 1906.

B. SOLLORS.

PHONOGRAPH.

APPLIOATION FILED JULY 26, 190

ERNST soLLoRs, o1 COLOGNE, GERMANY.

' PHONOGRAPH.

Specification of Letters Patent.

Patented Oct. 9, M06.

Applicat on filed July 26, 1904, Serial No 218,239-

To all when), it may concern:

Be it known that I, EnNsT SoLLoRs, merchant, a subject of the Kingof Prussia, German Emperor, residing at Hohenzollernring 67, Cologne, Germany, have invented certain new and useful Improvements in Phonographs, of which the following is a full, clear, and exact description.

The present invention relates to an adjusting device for phonographs.

In phonographs, especially such as are employed'for purposes of dictation, a great drawback is found "to be in that when the phonograph is started or stopped the ma-v chine is not immediately connected or disconnected. The phonograph willymoreover,

invariably at the moment of the disconnecting make a little further forward motion, and in like manner when it is started again there will be necessary a certain movement of the phonograph before it again possesses the speed at which the sounds through the trumpet are clearly audible. Obviously this is a very disagreeable occurrence in the reproduction of dictated matter, because by stop ing and starting some words are invariably 0st. By means of the stopping and starting device forming the subject of this application this drawback is overcome, inasmuch as the phonograph when the machine is stopped automatically moves a little backward, so that when it is started again the sounds which would otherwise be lost become audible, and under certain circumstances also the last words previously heard are repeated.

In accordance with the present invention I employ a controlling device which when the driving-motor is stopped either starts a second motor working in the opposite direction of the driving-motor and also engaging with the phonogra h or reverses the driving-motor itself an when the controlling device runs out the second motor or the reversed driving-motor is put out of gearb the controlling device. As a controllin evice any mechanism may serve which wil automatically sto after a certain time and which isl adapted to reverse the driving-motor or to drive the second mo tor. I

The device is preferably so arranged that the controlling-lever of the driving-motor of the phonograph at the moment 0 stop age releases a catch acting upon the contro ling device, whereupon this latter starts the second motor or reverses theoriginal drivingmotor. Moreover the stopping ,of the controlling device .is effected either by the automatic engagement of the catch or by the running down of the controlling device itself.

As already stated, any suitable mechanism may be employed as acontrolling device, and as the simplest thereof may be mentioned a clockwork mechanism which puts the second motor in operation during the working period or reverses the driving-motor or drives itself directly by mechanical means. The clockwork must be arranged automatically to ut itself out of gear after a given time ant to sto the second motor or the reversed motor.

Iiieference is had to the accompanying drawings, in which a suitable device of this kind is illustrated, by way of example, in Figure 1 in front elevation, and in Figs. 2 and 3 in side elevation. I

It is assumed in the embodiment illustrated in the drawings that the phonogra h possesses two electric motors A and B, revo ving in opposite directions. These two electric motors A and B are connected in such a manner with a art bearing the phonogram (not shownin t e drawings) that the phonogram is turned by motor A in one direction and by motor B in the opposite direction. Obviously instead of electric driving mechanical driving may be employed, whereb the driving mechanism must be so arrange that it will operate backward or forward.

U on the housing is su ported a lever c, revo uble about the point If this lever be moved out of the position shown in the drawings, whereby the driving-motor A is cut out, the catch (I, attached thereto, comes in contact with the projection f of the lever f and causes this to revolve upon the pivot h, so that the arm f 2 is raised. In the depressed position the end of the arm rests against the projection i on a disk In. he latter is placed upon the shaft m, which is driven by means 0 a spring-drum 0 by means of a train of wheels 1 U on the shaft m is further laced a disk g, whic is provided with an insu ationplate r, on which a contact-spring s presses in the position shown in the drawin Between the disk g and a disk t, upon w 'ch another contact-spring u presses, is a conducting connection. (Not illustrated in the drawings.) I

As long as the lever a occupies the position illustrated in Fig. 1 the sprlng .9 remains in contact with the insulated late 1".. If the driving-motor A is out out b means of the lever c, the arm f is raised y the striking of the catch cl against the projection'f of the lever f, and the arm f 2 releases the disk 7c, which revolves under the influence of the train of gearing, and thereby turns the disk g, whereupon this disk comes into contact with the spring s, and the circuit for the second motor B, working in the opposite direction of the motor A, is closed. After the catch d has passed the proj ection f the loaded end f of the lever f rests again upon the periphery of the disk k, and as soon as this disk has made a full revolution the projection '1', comes into abutment with the end f and the clockwork is stopped. At the same time the current for the motor B is interrupted by reason of the spring 8 coming into engagement with the insulated plate 1', and the motor B isstopped. The phonogram of the phonograph has consequently been turned backward during the time of the revolution of the disk It. When the machine is again started, the sounds which would otherwise have been lost become clearly audible, and by suitable arrangement of the wheels of the clockwork also the last-spoken sounds are repeated.

Having thus described my invention, what I claim as new is- 1. In reversing mechanism for phonographs, the combination with the drivingmotor, and the lever controlling said motor, of means controlling the reversing movement of the phonograph, and means for locking said controlling means, said locking meansbeing operated by the controlling-lever to release said controlling means.

2. In reversing mechanism for phonographs, the combination with the drivingmotor, and the lever controlling said motor, of means controlling the reversing movement of the phonograph, and a catch normally engaging said means and adapted to be released The foregoing speci cation si ned at C0- logne, Germany, this 13th day of uly, 1904.

ERNST SOLLORS.

Inpresence of-- Y WILLIAM KNEPPERS, Jon. SOHULZ.

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