US1547768A - Phonograph attachment - Google Patents

Description

July 28; 1925. 1,547,768

G. M. LITTLE PHONOGRAPH ATTACHMENT Filed April 18,. 1922' I I I Z. i 20 5 9 /r /4 2/ a g I E fi INVENTOR Jeacge M tiff/e Y MTORNEY Patented July" 28, 1925.

UNITED STATES GEORGE M. LITTLE, OF PITTSBURGH, PENNSYLVANIA.

rnonoea arn ATTACHMENT.

Application med April 18, 1922.- Serial na'ssaiaa.

'To .all whom it may concern.

Be it known that I, Gnonen LITTLE,

. a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have in-v vented a new and useful Improvement Phonograph Attachments, of which the following is a specification.

My invention relates to music reproducing devices of the phonograph type and it has special relation to means for causing a phonograph to produce the same tones as are normally produced from any given phonograph record and in the same se-- quence, but in the reverse order.

More specifically, my invention relates to means "adapted to be applied to aphono graph for causing a phonograph record to be rotated by the turntable thereof but in the direction opposite to that of the turn table, and to produce music therefrom.

One object. of my invention is to pro vide a means for supporting any' given phonograph record in substantially normal position on a phonograph and for rotating the same in a counter-clockwise direction while the stylus of the reproducer is held find that to reproduce the various individual grap tones in the same sequence but in exactly the reverseorder produces'a resultant music which is novel, entertaining and of an unusual nature.

' A more thorough comprehension of the" mechanical phases of my invention may be, had by reference to the accompanying drai'wings to be hereinafter described in detai I Fi re l iis a plan view of. a phono provided with a device embodying my invention.-

' Fig. 2 is a side view, partially ingelevature illustrated in Fig. 1.

tion and partially in section, ofthe'f strua v Fig. 3 is 'a-plan view of the device alone embodying my invention which is shown in operative position in Figs. 1 and 2.

Fig. 4 is a detailed sectional View of the phonograph record centering portion of the device illustrated in Figs. 1,2 and 3.

In the drawings,.I show a phonograph turntable 5 mounted upon a spindle 7 which extends through a top 'member 8 of the phonograph cabinet. The turntable 5 is adapted to be driven in the customary clockwise direction as indicated by the arrows 9. In Figfl, I show atone arm 10 having mounted thereon the usual reproducer 11 provided with a stylus 12. The arm v10 is disposed on the left hand side of the turn table 5 instead of on its customary right hand side, as shown in broken lines at 13.

Upon the turntable 5 is mounted a wearing plate 6 on which, in turn, is mounted a device 14 which embodies my invention, as best shown in Fig.- 3. The plate 6 may consist of a phonograph record, which will provide a suitable surface, or any other flat disk, metallic or otherwise. The device 14 consists of a record centering member 15, to be hereinafter more fully described, supported upon a centrally disposed sheet metal plate 16. To the plate 16 are attached, by soldering or otherwise, three radially extending arms 17, -18 and 19. Upon each of these arms is rotatably mounted a roller member 20 which consists of a soft rubber washer 21 supported on each side by a metallic washer 22 of smaller diameter than the washer 21. The washers 22 also provide a" metallic journal member (not shown). for the rubber washers 21. The rods 17, 18 and 19 are stiffened by means of an annular wire member 23, which is soldered ,or otherwise suitably connected thereto. In

Fig. 2 a portion of the member 23 is broken away for the sake of clearness. The arm 19 is of considerably greater length-than are soldered or otherwise suitably secured a pin.

member 25. The member 25 consists of an upper portion 26v which is of the same 'diameter as is the record engaging portion of the spindle 7 and a lower enlarged 'hollow portion 27, the inside diameter of which .the arms 17 and 18, for a purpose to be is slightly larger than the'outside diameter of the upper portion ofthe spindle 7, so as to permit free movement therebetween.

In using the device embodying my invention, the entire member, as shown in Fig. 3 is placed upon the turntable 5 with the upper end of the spindle 7 disposed within 1 the hollow lower portion 27 of the record centering member 15." The deviceis supported by the roller members and is rotatable withrre'spect to the turntable 5 and spindle '7, the Wearing platefi moving. A phonograph record 28 is then placed upon the roller members with the turntable.

20 with the portion 26 of the pin projecting throu h the centrally disposed opening 29 thereo in order to properly center. the record 28. The record is supported upon the three soft. rubber rollers 20 only. The

extreme end of the arm 19, which projects beyond the outer edge of the turntable is adapted to be engaged, as for example by a Weighted member .30, to prevent bodily rotation of the entire device'14.

The turntable 5 is rotated in a clockwise direction, as indicated in Figs. 1 and 2, by

the arrows 9. As the device 14 is prevented from rotating by the extension'of the arm 19, the roller members 20 will be rotated in the direction i ndicated by the small arrows .31 in Fig. 2.. The rotation of the roller members 20ca uses rotation of the phonograph "record28 in a counter-clockwise directlon as indicated by the arrows 32. Thus, the power imparted by the turntable 5 to the device 14 1s utilized to rotate the record 28 in a direction opposite to that of the turn- If desired, the wearing plate 6 may be dispensed with, if the 'felt surface of the turntable is quite smooth.

It is desirable, in order to reduce the wear on a phonograph record to a' minimum, to dispose the stylus of the reproducer at an-angle to thesurface of the record which is obtuse, with respect to that portion of the record which has but recently passed under; the stylus. .If the reproducer remains in its normal position and the direction of rotation of therecord is reversed, the angle between the record and the stylus Wlll be'acute instead of obtuse, causing. a tendency for the stylusto dig into the record, thus injuring it. 'In order to. avoid such occurrence," *move' the reproducer from the normal, right hand position, .as shown at 13, to the, left handv position, as shown at 11,,when the record is rotated in a counter-clockwise 1 direction. This dif ficult'y' may also be avoided-by-the use of a suitable lmucklegjointin the tone arm 10 whereby the reproducer .11 and stylus 12 may be profperly disposed with respect to the record or either direction of rotation. While I have shown but one form of my .roller members adapted to engage and be actuated by a rotatable phonograph turntable and to support and actuate-a'phonograph record in a direction opposite to that of the turntable.

2. In a phonograph-record-propelling device, in combination, a supporting means for a phonograph record adapted to be located on a phonograph turntable and comprising a roller member operatively engaging the turntable and the record and having its axis of rotation perpendicular to the axis of the turntable, whereby said record is caused to rotate in a direction opposite tothe tumtable.

3. In a phonograph-record-propelling device, in combination, a supporting means for a phonograph record located on a phono- 4. In combination with a phonograph I having a power propelled turntable adapted to support and actuate phonograph records, means adapted to be mounted on said turntable comprising a support for a plurality of rotatably mounted roller members, said roller members being adapted to engage and be rotated by said turntable, and means for preventing the rotation. of said roller sup port.

' 5. In combination with a' phonograph having a power propelled turntable adapted to normally support and actuate phono graph records, means adapted to be mounted on said turntable comprising a stationary frame provided with a record centering pin and a plurality of radially extending arms, and a plurality of roller members rotatably mounted on said arms, said roller members engaging said turntable and supporting said frame, said rollers being ada ted to support a phonograph record an rofite in a direction opposite to the turnta e.

6, In combination with a phonograph cause it to having a power propelled turntable adapted to support and actuate phonograph records means adapted to be mounted on said turn:

table comprising a frame provided with a record' centering pin and a plurality of radially extending varms, and a plurality of roller members rotatably mounted on said arms, said roller members being supported upon and rotated by said turntable, and means for preventing the rotation of said frame.

7. In combination with a phonograph 1 having a rotatable turntable, power means for rotating said turntable, and means adapted to rest upon said turntable to support a phonograph record and to rotate-it in a direction opposite to that in which the turntable is operating. I

In testimony whereof, I have hereunto subscribed my nam this1 7th day of April, 1922.

GE RGE n. LITTLE. 4

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