US1267059A - Phonograph. - Google Patents

Description

O. B. COLE.

PHOROGRAPH- APPLICATION FILED APR. *4, TQIG- 1,267,059. Patenfed May 21,1918.

2 SHEETS-SHEET I.

Inventor.- Otto .B. 6616,

0. B. COLE. PHONOGRAPH. APPHIUIION FILED APR. H. 1916. 1,267,059. Patented May 21,1918.

2 SHEETS-SMEET 2.

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' rsommm To all whom it may concern: 7

Be it known that I, Q'rro B. Gonna citizen of the United States, and a resident,of; Bos ton, inthe: county of Suffolk and State .of Massachusetts, have invented an ment in Phonographs, of which. the ollow-, ing description, in connection with these; companying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to phonographsand its more particular purpose is to improve the means whereby the record, support s moved. In order that m invention ma be clearl understood, I she 1 herein descri ea speci c embodiment which I haveillustrated in the ,accompanyin drawings showlngit as applied to a machine of the typewherem the record is a flat disk. 7 While myinprove: ments are adapted for machines, various forms of motive power, la consider them to be particularly advantageousincom nectionwith a machine drivenvelectrically and therefore I shall use such machineas an example of my invention for the purposes of thiss ification.

Re erring to the bodiment of my invention is detail: a i v a I a a Figure 1 is a top plan of the drivingtm'echanism. a! 1 Fig. 2 is a side elevation ofthesame place in; the phonographas sseentfrorn the left of Fig; 1, the (record support-.beingrin" place but shown partly brokensawaye Fig. 3 is aside elevation as seen froin the 1 botmm 0f Fig.'1;-:i, w m' 1 k Fig. 4 is a section on line- MPof Eng. 1 1a part of the record, holderbeing-showm also and in central section; andm i drawings", herein anemillustrated in Fig. 5 is'asection 1- The phonograph mechanism wqhoserr for illustration, as shown inFi 2, comprises a record siippdfit 1i remiss wit a hub member or sleeve 2 adapted to fit over the driving spindle 3. This spindle is driven from a motor 4, herein shown as an electric motor, by means of a suitable train of mechanism an exam le of which is herein illustrated and whi I will now proceed to describe in detail.

The armature of the motor 4 carries the pulley 5 connected by means of a belt 6 to the pulley 7 fastened on the wer shaft 8, which is suspended in suite is bearings 1n Specification of Letters Patent. Applicationfled April 14,

Imfprove:

Hpressure is ment shown the pivot 19 is formed in an arm .22 depending from the. rock-shaft 23 which, has bearings at 24 rock-shaft 23 may assxenoa mo maximum A oonrona'rxon art-Mama;

1910. semi at. 01,202

the hanger 9 secured to the underside the screws, 10 of thejgtop w ll, 11? of the cabi net of the phonograph. I prefer to utilize a belt fi or equivalent frictionaltransmisonudev ce as itpermits the armature or rotor of themotor to spin idly if thepower I sh is op ad or retarded in any manner. Therefore, itis. unnecessary to employ a motor of delicate form to adapt it to the work of driving a phonograph and all complicated electric governin mechanisms are dispensed with, The spee of the power shaft 8 may be regulated by means of suitable governing mechanism 12. This mechanism, best shown in Figs. 2 and 5, may comprise the collar13 70 pinned to ,the shaftS and thetsleeve 14' sliding on said shaft and carryinga brake disk"- 15.

of the shaft rises thrown outward ing brake means are provided to coil rate with the disk 15 and I have herein own. them as comprising the on an axis extending substantially parallel to the plane of the disk 15. Each arm of the yoke carries a suitable brake shoe 20 whichmay be retained in place as shown'in Fig. 5 by bending over the ends of the arms ofthe yoke thereon as indicated at 21. By joura naling the yoke at 19 as described it is; adapted to adjust itself to the face of the disk 15 and an even and well distributed provided for. In theembodi;

in the hanger 9. The

the phone;

18 from the brake disk 15 thereby be ,adjusted. .This enables one to impose a oer-- tainldesired maximum speed on the power shaft 8.

The spindle 3 is driven from the pow rws mounted in suitable bearings providedin a 110 tented May 21 1918.

Connecting the collar 13 and sleevelfl are suitable springs 16 carrying the weights,v .17 It will be understood that as the-speed,

the weights 17 willybe" by centrifugal force bend? the springs and drawing sleeve 14 and I l brake disk 15 toward the left. Suitable yoke 18 journaled as at 19 a be actuated in anysuitable manner as, for example, by means, of; a v v the nut 25 traveling on screw 26 which may be turned from the exterior of i graph cabinet and the distance of the yoke-100.

gearing herein exemplrbracket 29 pivoted at 30 on the hanger 9 so that the spindle 3 can be swung to and from the shaft 8 to bring the gearing into mesh or adjust the same. This mountiu considerably simplifies the assembling o the machine as it enables one to compensate for slight inaccuracies in the assemblage of the parts, maintaining always a perfect correlation of the gearing 27 and 28.

I provide means or so driving the record support 1 that it may be given a forced movement independent of the speed of the motor or the value of the connecting train without imposing any strain on the various parts of the mechanism which might strip the gears, loosen the hearings or otherwise deleteriously affect the machine. Such a method of driving is advantageous because operators of phonographs seldom have much appreciation of the mechanism involved and will not infrequently sto the record holder by catching it with the and without halting the motor or even turn it backward for several revolutions. The method furthermore provides means for taking u the inertia of the rotating table when t e power is shut 011'. For this purpose I preferably provide a frictional drivin means, an example of which is illustrate in Figs. 2 and 4, there being shown as embodying a frictional surface carried by the s indle 3. This surface may consist of a fi er washer 31 suitably mounted as by means of the col lar 32 to which the washer 3], may be fastened, for exam 1e b means of a pin as shown and suita le a hesive. The base of the hub member or sleeve 2 is provided with a cooperating frictional surface here shown as a similar washer 33 adhesively secured to the bottom of the sleeve. \Vhen the record holder 1 is placed over the spindle 3 the weight of the same will be suifieient to press the frictional surfaces 31 and 33 into such contact that the rotation of the motor communicated through the belt 6 and shaft 8 will act to rotate. theholder in the usual manner. If, however any extraneous force is placed on the holder 1 in opposition to the motor the surfaces 31 and 33 will slip and no strain will be imposed on the motor or on the train of mechanism by which the record support is driven. The construction also causes the speed .of the holder to pick up or fall gradually.

drive the record holder, a drivin name to-this specification. I

permit idle movement of the rotor. Fluctuations of the current delivered to the motor such as are common in commercial lines in country districts will not adversely affect the'operation of the machine.

In the for oin description I have gone into considera le etail as to the particular mechanical parts which are utilized in the embodiment of my invention illustrated in the drawings. 'It will be understood, however, that the various mechanisms are merely examples of those which might be used to carry out the principles of my invention and that what I do claim and desire to secure by Letters Patent is:

1. In a sound reproducing machine, a case having an opening therethrough, motor mechanism in the case including a driving spindle projecting through said opening, a collar on said spindle, a turntable having a hub to receive said spindle of a size to pass through the opening and rest on the collar and coliperating frictional driving surfaces on the hub and collar.

2. In a phonograph, in combination, a bracket, hearings in said bracket, a spindle mounted in said bearings and .arrangedto shaft and cooperating gearing on'said driving shaft and spindle, said bracket being mounted for swinging movement to move said spindle to and rom said shaft whereby to adjust Said gearing.

3. In a phonograph, in combination, a bracket, bearings in said bracket, a spindle mounted in. said bearings and arranged to drive the record holder, a shaft gearing with said spindle and speed responsive means to govern the shaft and through it the spindle, said bracket being mounted for swinging movement to and from said shaft whereby to adjust the gearing.

In testimony whereo I have signed my L, 1cm BL COLE

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