US1407090A

US1407090A - Repeat device for phonographs

Info

Publication number: US1407090A
Application number: US445543A
Authority: US
Inventors: Frederick A Shaw
Original assignee: AUGUSTUS A GREEN
Current assignee: AUGUSTUS A GREEN
Priority date: 1921-02-16
Filing date: 1921-02-16
Publication date: 1922-02-21
Anticipated expiration: 1939-02-21

Description

F. A. SHAW.

REPEAT DEVICE FOR PHONOGRAPHS.

APPLICATION FILEID FEB. 16. 1921.

Patented Feb. 21, 1922.

2 SHEEI'S-SHEET 1.

W TORNEYS.

F. A. SHAW.

REPEAT DEVICE FOR PHONOGRAPHS.

APPLlCATiON FILED FEB. 16. I92

2 SHEETS-SHEET 2.

F, J 70 63 V INVENTOR.

BY 7 %S.

NETED PATENT OFFICE;

FREDERICK A. SHAW, OI DIG HTON, MASSACE'USETTB ASSIGNOR TO AUGUSTUS A. i GREEN, 0F PROVIDENCE, RHODE ISLAND.

REPEAT nnvicn ron rnonoomrns.

Specification of Letters Patent. Patented Feb. 21, 1922.

Application filed February is, 19'21. Serial No. 445,543.

To all whom it may concern:

Be it known that I, F REDERIOK A. SHAW, a citizen of the United States, residing at Dighton, in the county of Bristol and State of Massachusetts, have invented new and useful Improvements in a Repeat Device for Phonographs, of which the following is a specification.

This invention relates to certain new and useful improvements in a repeat device for phonographs, and it has for its primary obect to provide a simple and efli-cient construction for expeditiously transferring the reproducing needle or stylus at the finish or end of the sound groove to the beginning thereof without injury to the needle or to the record.

The invention consists, in part, of a shuttle or transferring member mounted eccentrically relative to the sound record, and adapted to swing in an are also to the lat ter which arc traverses the sound grooves in an outward direction, the general operation being for the sound box to ride upon the shuttle and offer sufiicient resistance to the rotary movement thereof, along with the record, to cause the shuttle to swing on its pivotal mounting relative to the record, which action results in the shuttle and the sound box, temporarily supported thereby, moving in an eccentric arc outwardly until the stylus is brought to its starting position whence the shuttle will move from under the same and permit it to drop gently onto the record.

The invention further resides in an improved repeating device having a part surmounting the record and removable readily therefrom for a change of records.

The invention further resides in the features of construction and the arrangements and combinations of parts hereinafter described and claimed, referencebeing had to the accompanying drawings wherein:

Figure 1 is a perspective view of the playing table and tone arm of a phonograph, showing my invention embodied therein;

Fi ure 2 is a side elevation thereof showing t e tone arm about to complete the reproduction of the record;

Figure 3 is a top plan view of the shuttle or return attachment;

Figure 4, is a diametrical section therethrough on line 4-4 of Figure 3;

Figure 5 is a perspective View of the stylus attachment; and

Figure 6 is a detailed section on line 6-6 of Flgure 3 showing more clearly the latch for normally holding the shuttle in its recelving posltlon.

In proceeding in accordance withthe present 1nvention,a disk-like, heavy base or body 1 1s IPIOVldGd of a diameter substantially equlvalent to the central area of a record bearing the title, etc., relating to the sub- 6 ject matter and producer of the article. To one slde of the base or support is pivotally secured, as by pivot pin 2, the shuttle arm 3 which normally extends diametrically across the same and carries on its-opposite end, slightly beyond the periphery of the base, the shuttle or sound-box-carrying member 4. The shuttle comprises an arcuate, channeled or U-sectioned member, the inner wall of which carries a spring 5 having its terminal extending therethrough, as at 6, to obstruct the channel, while the outer wall is formed with a knife edge 7 at its forward end, the forward end of the channel bottom also tapering or formed with a gradual rise,

as depicted at 8. The shuttle is adjustably mounted on the free end of the arm 3 by means of the set screw 9 passing through the slot 10 in the inward extension from the shuttle, as is clearly shown in Figures 3 and 4.

The shuttle arm'is retained in and urged to its normal position by means of a coiled spring 11 fixed at one end to the intermediate portion of the arm and at the opposite end to the disk 12. The outer end portion of the arm carries a double-beveled keeper 13 for engagement by the spring latch 14, secured to the base 1, said latch being designed to frictionally hold the arm in its normal or inoperative position.

The cooperating part carried by the tone arm or sound box, consists of a ring support 15 fastened to the inner side or back of the'sound box, as by screws 16, the lower edge of the ring having a downwardly deflected leg 17 which terminates in a feltcovered foot 18, said leg, intermediate its length being also provided with a pair of cars 19 between which is pivoted a lever 20 so mounted or weighted as to tend to swing inwardly at its lower end against the leg. A pin 21 depends from the lever but terminates short of the plane of the foot 18. The function of the latter is to prevent the pin from contacting with the record in the event'the sound box is turned over with- Otl out the stylus having first been inserted, in which case the felted foot will cushion the contact between the sound box and the record.

In operation, with the stylus working inwardly from the outer diameter of the record disk, the pin 21will also be carried inwardly. As the latter approaches the path of move- 1 ment of the shuttle and moves into said path,

the knite edge 7 will deflect the pin 21 inwardly on its pivotal mounting 19 so as to ride up the channel of the shuttle during which the shoulder 22 rides over the outer wall of the channel until arrested by the pin coming into contact with the-inturned end of spring 5. This arrested action results in the arm 3 being swung from the latch 1t outwardly and against the tension of spring 11, said spring 5 being tensioned sufficiently to overcomethe latch and coiled spring. When the arm has reached its outward limit of movement, the spring 5 then yields to permit the pin 21 to ride thereby and out of the channel down onto the record groove at its beginning The shuttle and its arm being now released, coiled spring 11 acts to return the same to normal position where it is retained by the latch 14;

The attachment or device is designed for use with varying sized records and for this reason the disk 12 is rotatably mounted on the pivot pin 2 beneath the arm 3 and carries an upstanding stop 24 with which the arm 3 is adapted to engage at its outward limit of movement. When the stop has been properly adjusted, the disk is held fixed by means of an overlying clamp arm 25 and the thumb screw 26 threaded into the base 1.

The base is formed with a-central aperture 27 to receive the center post 28 common to all disk tables 29. llt will therefore, be

obvious that in order to change from one record to another, the base 1, with its supported superstructure, is qulckly removed in a manner similar to the removal of the I disk and is likewise replaced following the placing of the record on its table. The attachment is readily attached to present makes of talking machines with any modification thereof whatever unless possibly in the provision of screw holes in the sound box for the screws 16 in makes that do not have a removable back plate embodied in the sound box construction. The transfer of the sound box outwardly occurs within approximately one quarter revolution of the turntable and during which the stylus is carried low and in proximity to the disk record whereby when the stylus is replaced on the record the action will be gentle and without jar or injury to either the record or stylus. When the repeat attachment is not being used the central portion may be removed and stored away while the part carried by the sound box will not interfere with neozoeo the usual operation of playing or reproducing a record.

Having thus described my invention, what ll claim as new and desire to secure by Letters Patent is 1. In a repeat device for phonographs, an actuating member, a shuttle carrying member operatively related to the first member, a shuttle carried by said second member, latching means for the second member, and means whereby. the latching means is released upon the stylus engaging the shuttle.

2. In a repeat device for phonographs, an actuating member, a shuttle carrying member operatively related to the first member, a shuttle carried by said second member, an obstruction borne by the second member, means toreleasably hold the second member against movement, and a part movable with the stylus and engageable with the obstruction to efl'ect release of the said means and to then pass the obstruction and be disengaged therefrom.

3. In a repeat device for phonographs, an actuating member, a shuttle carrying member operatively related to the first member, and having a channel, a shuttle carried by said second member, a spring secured at one end and having its opposite end free and extending through an opening provided therefor in the second member and across the channel, a latch for the second member and a part movable with the stylus and against the free end of the spring to efiect release of the latch.

4. In a repeat device for phonographs, an actuating member, an arm pivoted at one end to the member and having a curved channeled shuttle on its opposite end, a latch for the arm carried by the member, a yieldab-le element in the channel, and a member movable with the stylusang engageable with .the yieldable element to e ect release of th latch.

5. In a repeat device for phonographs, an actuating member, an arm pivoted at one end to the member and having a curved channeled shuttle on its opposite end, a latch for the arm carried b the member, a spring secured to the shutt e, and having a free endextending across the channel, and a member movable with the stylus and engageable with said free end of the spring to efi'ect release of the latch and to then move past said spring end.

6. In a repeat device for phonographs, an actuating member, an arm pivoted at one end to the member and having a curved channeled shuttle on its opposite end, a latch for the arm carried by the member, an obstruction in the channel and a member movable with the stylus and engageable with the obstruction to efiect release of the latch.

7. In a repeat device for phonographs, an actuating member, a member connected thereto and havinga shuttle extending transthe record during the movement of said versely thereto, said shuttle having a curved stylus member on the track.

track, arranged so that the second member In testimony whereof I have signed my is radial thereto, a member movable with name to this specification in the presence of 5 the stylus and on the track and entering one two subscribing witnesses.

end-of the shuttle from one side of the second member and then passing through the FREDERICK SHAW opposite end thereof, on the opposite side of Witnesses: the second member and means to effect oper- M. A. KINGSLEY,

10 ation of the parts to replace the stylus on J. A. MILLER.