US1253276A - Phonograph. - Google Patents

Description

J. H. PHILLIPS. JR.

PHONOGRAPH.

APPLICATION FILED AUG.H| I9IT.

1,253,276. Patehted Jan. 15,1918.

T JIIQ JoH/v HENRY PHILLIPSJ? FI I-JE ammo z JOHN HENRY PHILLIPS, JR, OF JACKSON, MICHIGAN.

PHONOGPRAPH.

Application filed August 11, 1917; Serial No. 185,687.

To all whom it may concern:

Be it known that I, JOHN H. Pn'mmrs, Jr., a citizen of the United States, residin at the city and county of Jackson, State 0 Michigan, have invented certain new and useful Improvements in Phonographs, of which the followin is a specification.

This invention re ates to improvements in phonographs.

My improvements relate particularly to governor mechanisms for phonographs for reproducing disk records of the kind shown in my 00- pending application, Ser. No. 165,392, filed April 30, 1917, in which those portions or undulations of the spiral sound grooves formed by sounds of equal duration are of substantially equal length without regard to the position thereof in the sound groove.

The main objects of my invention are:

First, to provide in a honograph an improved means whereby t e speed of the record surface relative to the reproducing needle is of constant velocity and may be regulated as desired.

Second, to provide in a phonographan improved means for uniformly lncreasmg the angular velocity of the turn table, so that the speed of the record surface relative to the reproducin needle. is constant.

Third, to provi e in a phonograph an 1mproved means for accomplishing these results, which' may be readily applied to a phonograph of the usual construction and adjusted to andfrom operative position, so

that it may be employed in conjunction with the usual governing means.

Further objects, and objects relatlng to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention 1s clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, form1ng a part of this specification, in whlch:

Figure I is a detail view of a structure embodying the features of my invention, no attempt having been made to maintain proper relative proportions between the various parts illustrated.

Fig. II is a front elevation of my 1111- proved governingmeans removed from the machine.

Specification of Letters Patent.

Patented Jan. 15, rare.

F'g. III is a rear elevation thereof.

Fig. IV is a detail side elevation, portions being broken away and portions shown in section for convenience in illustration.

Fig. V is a detail view, partially in vertical section, on a line corresponding to line 55 of Fig. II. I

Fig. VI is a detail section on a line corresponding to line 66 of Fig. III.

In the drawing, similar reference characters refer to similar parts throughout the several views,.and the sectional views are taken looking in the direction of the little arrows at theends of the section lines.

.Referring to the drawing, the reference character 1 indicates the turn table, 2 the motor, 3 the speed governor, 4 the tone arm, and 4 the sound box of a phonograph. These parts are shown mainly in conventional form and, as their details form no part of my present invention, they are not illustrated or described herein.

The record 5 is also shown conventionally, but it is intended to illustrate a record such as that described in my co-pending applicatron hereinbefore referred to, having a spiral sound groove in which the sound undulations produced by sounds of equal duration are of substantially equal length, as are also the spaces between the sound undulations caused by intervals of equal duration between recorded sounds.

In order to properly reproduce these records the records should be driven so that the angular velocity increases uniformly as the reproducing needle travels toward the center of the record, so that the speed of the record surface relative to the needle remains substantially constant. This I accomplish by my improved governing means.

In the embodiment of my invention illustrated, I provide a T-shaped supporting arm 6, the end of the stem of Which is turned at right angles thereto and secured to the tone arm 4 of the phonograph by means of the clip 7. The laterally turned portion 6' constitutes a pivot or journal for the arm. The head 6 of the T is disposed in a vertical plane providing a journal for the governor frame 8,-see Fig. VI. The frame 8, which is yoke-shaped, is provided with a cross piece or bracket 8 and with a bracket 8" provided with bearings for the head or journal 6 of the supporting arm. The lower ends of the arm of the yoke-like frame 8 are provided with bearings 9 for the shaft 10 of the governor wheel 11. Thisgovernor wheel 11 is provided with a rubber tire or tlreid and is adapted to travel on the record On the governor wheel shaftv 10 is a worm gear 13 meshing with'a. worm gear 14 on the governor shaft 15. This governor shaft is ournaled in a depending arm 8" of the racket 8' and a bracket arm 8"" projecting at the upper end of the frame 8,-Fi V. A collar 16 is fixed to the governor sha 15 and a similar collar 17 is mounted for axial movement and provided with a friction brake disk 18. The blade springs 19 extend between the collars and are provided with governor balls 20.

A lever-like brake member 21 is-pivotally mounted on the frame 8-to coact with the friction disk 18 of the governor. The pivoted brake member is provided with downwardly projecting arm 23 with which the adjusting screw 24 coacts. By adjustment of this screw the brake member 21 may be raised and lowered to re late the governor. The brake member 21 1s provided with a friction shoe or engaging member 25 of rub ber or other suitable material.

In operation the governor wheel travels on i the surface of the record, thereby driving the governor, which in turn, acts tocontrol the rotation of the governor wheel and thus the travel of the record disk and'the surface speed of the record disk is rendered uniform or of constant velocity.

With this arrangement of parts, records embodying the features of my co-pending application may be effectively reproduced and, as such records have a greater capacity than ordinary records of the same dimensions, the advantages of my improvements will be apparent.

Inasmuch as the surface speed does not exceed the minimum surface speed of an ordinary record, myimproved governor may be employed in connection with the usual governor found in apparatus of this class, so that the instrument may be used for playing either the common type of record or my improved record.

I have illustrated and described in improvements in but one embodiment. have not attempted to illustrate or describe various modifications and adaptations which I contemplate, as I believe the disclosure made will enable those skilled in the art to which this invention relates to embody or adapt the same as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters'Patent, is: U

1. In a structure of the class described, the combination of a driven record turn table, a tone arm supportedto swing above said turn table, a governor frame supportlng arm pivotally mounted on said tone arm to swing 1n a vertical plane and providedwith a vertical governor frame journal at its outer end, a yoke-shaped frame journaled thereon, a governor shaft carried by said frame, a' governor wheel disposed in alinement with said frame journal and provided with a rubber tread and adapted to travel on the surface of a record disposed on said turn table, a shaft therefor journaled in the arms of said frame and geared to said governor shaft, a governor mechanism on said governor shaft comprising a disk, and a coacting adjustable brake member.

i 2. In a structure of the class described the combination of a driven record turn table, a tone arm supported to swing above said turn table, a governor frame supporting arm pivotally mounted on said tone arm to swing'in a vertical plane and provided with a vertical governor frame journal at its outer end, a yoke-shaped frame journaled thereon, a governor shaft carried by said frame, a governor wheel disposed in alinement with said frame journal and provided with a rubber tread and adapted to travel on the surface of a. record disposed on said turn table, a shaft therefor journaled in the arms of said frame and geared to said governor shaft.

3. In a structure of the class described, the combination of a drivenrecord turn table, a tone arm supported toswing above said turn table, a governor frame piyotally mounted on said tone arm, a governor shaft carried by said frame, a overnor wheel adapted to travel on the sur ace of a record disposed on said turn table, a shaft therefor journaled in said frame and geared to said governor shaft, a governor mechanism on said governor shaft comprising a disk, and a coacting adjustable brake member.

at. In a structure of theclass described, the combination of a driven record turn table, a tone arm supported to swing above said turn table, a governor. frame pivotally mounted on said tone arm, a governor shaft carried by said frame, a governor wheel adapted to travel on the surface of a record disposed on said turntable, a shaft thereforjournaled in said frame and geared to said governor shaft.

5. In a structure of the class described, the combination with a driven turn-table adapted to support a record, of a tone arm adapted to swing above said turn-table, a frame mounted on said tone arm to oscillate in both vertical and horizontal planes, a friction wheel. journaled in said .frame and adapted to contact with the surface of a record supported 'upon said turn table, and adjustable governing means for said friction wheel mounted upon said frame.

6. In a structure of the class described, the combination with a driven turn-table adapted to support a record, of a tone arm, a frame mounted on said tone arm, a friction wheel journaled in said frame and adapted to contact with the surface of a record supported upon said turn-table, and governing means for said friction wheel mounted upon said frame.

7. An attachment for phonographs comprising a frame, means for pivotally securing said frame upon the tone arm of a phonograph to oscillate in either a vertical or a horizontal plane, a shaft journaled insaid frame, a friction wheel mounted upon said shaft and adapted to contact with the upper surface of a disk record, governing means for said friction wheel mounted on said frame comprising a brake lever and a relatively rotatable brake disk coacting therewith, and means for adjusting said brake lever relative to said brake disk to regulate the speed, of said turn-table.

8. An attachment for phonographs comprising a frame, means for pivotally securing said frame upon the tone arm of a phonograph to oscillate in either a vertical or a horizontal plane, a shaft journaled in said frame, a friction wheel mounted upon said shaft and adapted to contact with the upper surface of a disk record, and governing means for said friction wheel mounted on said frame. I

9. A structure of the class described comprising a driven record, a friction Wheel mounted to travel on the face of the record, and speed governing means for said friction wheel whereby the speed of the record is controlled.

10. In a structure of the class described, the combination of a driven turn table, a

reproducing means comprising a stylus, and means coacting with the record supported on said turn table to maintain the speed of the surface of the record relative to the stylus substantially constant.

11. In a structure of the class described, the combination of a driven turn table adapted to receive a record, a reproducing means comprising a stylus coacting with. said record, and a speed governing means traveling with said stylus and comprising a friction wheel coacting with the surface of the record.

12. A structure of the class described,

comprising a turn-table, driving means for said turn-table, a tone arm supported to swing above said turn-table, a reproducing stylus carried by said tone arm, and a governor means also carried by said tone arm and coacting with the record for maintaining substantially uniform surface speed of the record'relative to the stylus. I 13. In a structure of the class described, the combination of a driven turn-table adapted to support a record, and a speed governor means comprising a friction governor traveling with the stylus upon the surface of the record.

In witness whereof, I have hereunto set my hand and seal in the presence of two w1tnesses.

JOHN HENRY PHILLIPS, JR.

Witnesses:

F. W. Fox, F. H. HELMER.

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