US1394173A - Automatic starting and stopping device for talking-machines - Google Patents

Description

A. A. HUSEBY.

AUTOMATIC STARTING AND STOPPING DEVICE vFOR TALKING MACHINES.

.IP PLICATION FILED luLY 31. 1920.

1,394,173, Patented ont. 18,1921.

4 SHEETS-SHEET -l.

v A. A.HUSEBY. AuIoMATIc STARTING AND sToPPING DEvIcE Foa IALKING MACHINES.

APPLICATION FILED JULY 3|. |920.f

4 SHEETS-SHEET 2.

j f t l Y wm Patented Oct. .18, 1921.

A. A. HUSEBY.

y AUTOMATIC STARTING AND STOPPING DEVICE FOR TALKING MACHINES.

APPLICATION FILED IuLY 31. 1920.

1,394,173, Patented Oct. 18, 1921.

4 SHEETS-SHEET 3.

A. A.' HUSEBY.

AUTOMATIC STARTING AND sToPPI-NG nI-:vICT FoR TALKING MACHINES.

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AIPPLICATION F|LE D JULY 3i. 1920.

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'the playing of a record, so

UNITED STATES PATENT OFFICE.

ALBERT A. HUSEBY, 0F CHICAGO, ILLINOIS.

Application filed July 31,

To all wlw-m t may concern.'

Be it known that I, ALBERT A. HUsEBY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Starting and Stopping Devices for Talking-Machines, of which the following is a specification.

This invention relates to the art of talking machines, and has reference more particularly to an improved mechanism for automatically starting and stopping the rotation of the turn-tableat the beginning and end of the playing of a record. More specically, the present invention applies to that type of automatic controlling mechanism wherein the control is effected by the swinging movements of the tone-arm, and wherein the mechanism can be set, in advance of as to arrest the movement of the turn-table at the completion of a record regardless of the length or size of the latter.

My present invention is designed to perform the same broad automatic functions as the mechanism disclosed in my former Patent No. 1,289,784, dated December 31, 1918; and consists of certain improvements thereon designed to reduce the number of parts, simplify the mechanism, lessen the space required for the mechanism, and apply the braking effect directly to the rotary turntable of the machine,- instead of to a movable element of the motor, as in my former patent.

With this and other objects in view, which will be apparent from the following detailed description of the invention, the latter consists of the novel parts and combinations of devices for effecting the purposes of the invention substantially as hereinafter described, and more particularly pointed out as to subject matter and scope in the appended claims.

My invention, its mode and principle of operation, and the advantages inherent thereon, will all be readily understood and appreciated by those skilled in the art from the following description, taken in connection with the accompanying drawings forming a part of this specification, in which :-r

Figure l is a top plan view, showing the relative positions of the parts just before the brake is released by the outward swing of the tone-arm;

Specification of Letters Patent.

Patented oct. 18, 1921. 1920. Serial No. 400,361.

a Fig. 2 is a similar view, showing the relative positions of the parts just before the brake is applied by the inward swing of the tone-arm at the conclusion of the playing of a record;v

F1g. 3 is a bottom plan view, showing the parts 1n the relative positions which they occupy in Fig. 1;

Fig. 4 iS a view in side elevation of the starting and stopping mechanism as viewed from the right of Fig. l, the supporting plate and turn-table appearing in section;

Fig. 5 is an enlarged vertical section through the friction joint of the catch-operating leverand its pivotal mounting means; and y Fig. 6 is an enlarged detail in horizontal section of the brake-shoe carrier and its immediately associated parts.

Referring to the drawings, 5 designates as an entirety the horizontal supporting plate or platform of the machine which, in practice, is mounted at the upper end, and below the lid or cover, of the usual talking machine cabinet (not shown). This plate or platform, as usual, supports the turn-table 6 and tone-arm 7 on its upper' side, and the motor and motorwinding mechanism (not shown) on its underside. The tone-arm 7 is pivotally mounted to swing horizontally about a vertical axis indicated at 8 and communicates with an underlying horn or amplifier, not herein shown since it forms no part of the present invention.

Rividly secured to the tone-arm '7, as by screws 9, (F ig. 2) is a radially extending arm 10 having formed on one edge thereof an extension 11 which has an inclined or oblique outer edge 12 for a purpose hereinafter described. In the supporting plate 5 are @formed slots 13 and 14, the former lying a short distance forwardly of the base of the tone-arm, and the latter lying substantially opposite one side of the base of the tone-arm. The purpose of these slots will hereinafter appear. Pivotally mounted on a stud 15 set in the plate 5 is a small plate 16 having an upstanding arm 17 in which is mounted a brake-shoe 18. This brake-slice is movable into and out of engagement with a depending flange 6 on the turn-table under a swinging movement of the brake-shoe carrier 16. In the member 16 is mounted a stud 19 that projects through an arcuate slot 2O in the main plate 5, and pivotally connected to the lower end tion 23 (Fig. 4) to which is anchored one end of a tension spring 24, the other end lof said spring being anchored to a stirrup 25 which forms a support for the bar 21. It will thus be seen that the springv 24, acting through the bar 21, normally tends to apply the brake-shoe to the rim or flange of the turn-table and thus hold the latter against rotation. The brake-shoe carrier 16 is held in idle or release position against the urging of the spring 24 by means of a catch 26, which lies against the periphery of the carrier plate 16, and when the latter is swung to brake release position, as shown in Fig. 2, snaps, under the impulse of a spring, into engagement with a stop shoulder 27 o n the periphery of the plate 16. The npstan-ding catch 26 projects through a slot 28 in the plate 5 and is formed on the free end of one arm 29 of a catch actuating lever. Theother arm 30 of this lever extends rearwardly in the direction of the base of theV tone-arm and is formed with an upwardly bent free end portion 31 that extends upwardly through the slot 13. Above and eX- tending lengthwise of the arm 30 is another arm 32 that is formed at its free end with av downwardly and rearwardly folded end Vportion 33 restingV on the stirrup 25. This arm 32 is formed with a transverse slot 34 shorter than the slot 13 but registering therewith, the upstanding stud 31 projecting through both slots'. The arm 32 constitutes a positioning or setting device for the upstanding member 31 within the limits permitted by the length df the slot 13, as hereinafter more fully described.

Referring to Fig. 5, the two arms 29 and 30 of the catch-actuating lever are connected to each other by a friction joint, and these lever arms, together with the arm 32, are mounted on a common pivot bolt 35 set in and depending from the plate 5. Encircling the pivot bolt 35 are inner and outer telescoping sleeves 36 and 37, on the latter of which are pivoted the overlapping inner ends of the lever arms 29 and 30, thin fiber washers 38 being interposed to secure -a sufficient friction to insure the release of the catch when thearm 30 is swung in one vdirection and the engagement of the catch with its cooperating stop shoulder when the lever varm 39 is moved in the opposite direction, but permitting the arm 30 to be moved independently of the arm 29 when positioning the stop pin or lug 31 in determining the point at which the turn-table is to be arrested upon the completion of the playing of a record.

The arms 29 and 30 are clamped by the pivot bolt 35 between a spring washer 39 and a iange 37 l on the sleeve 37; and the arm 32 is pivoted with suicient friction to prevent accidental movement between the flange 37 and a springwasher40 which Alies against the underside of the plate 5.

s ring 41 best shown in Fig. 3 said s rinfJV 2D b 7 C exerting a light push on the long arm 30 of the lever and itself being anchored on a laterally projecting arm 42 rigidly secured to the arm 32. The arm 42 is connected by a link 43 to the free end of an arm 44 fastened on the lower end of a vertical shaft 45 journaled in the plate 5 and having on its upper end a turning-knob 46. j

Briefly describing the operation of the mechanism, the brake shoe isv normallyV held applied, as shown in Fig. 1, to hold the turntable against rotation. lVhen a record disk has been placed on the turn-table, the tone-Y with theV tone-arm, it simultaneously swings in the same direction. The knob 46 is then turned, thereby swingingthe arm 32 toward the arm 10, said arm 32 carrying with it the arm 30 by reason of the engagement of the controlling end of the slot 34 with the upstanding end 31 of the arm 30, until said member 31 Strikes the arm 10. This determines the point at which the playing of the record will be arrested. In this movement, the lever arm 30 turns on the frictionjoint independently of lever arm 29,V which cannot partake of the swinging movement because catch 26 lies agai'nst the periphery of the brake-shoe carrier. The tone-armis then swung outwardly somewhat beyond the position at which the stylus will engage with the outermost coil of the record groove, and in so doing the inclined edge 12 of the extension 11 of the arm 10 strikes :squarelyV against the stud 22, this position of the parts being shown in Fig. 1. The forcing of the stud 22 rearwardly exerts a pullon the bar 21, against the tension of spring 24, and rocks the brake-shoe carrier in a direction to release the brake-shoe, as shown in Fig. 2. This rotation of the brake-shoe carrier brings the stop shoulder 27 opposite Ythe 'i which is slightly in advance of the position in which it was manually set. As soon as the playing of the record is completed, the arm 10 strikes the stud 31 and thereby rocks the catch lever, shifting the catch 26 out of engagement with the shoulder 27 of the brake-shoe carrier, and the spring 24, is then free to instantly apply the brake.

In association with the automatic starting and stopping mechanism above described, I have included a simple device by which the brake shoe can lbe applied and released manually when desired.

Referring to Fig. 6, 47 designates an arm loosely mounted on the bearing hub 48 of the brake-shoe carrier 16, and held in place by a washer 49, (Fig. 4) on the head of the pivot stud 15. In the arm 47 adjacent to its pivot is formed a segmental opening 50 in which projects a small stud 51 on the brakeshoe carrier plate 16. In the opening 50 lies a small coil spring 52 thatabuts at one end against the stud 51 and at its other end against the opposite end of the segmental opening. This normally holds the arm 47 in the radial position shown. When it is desired to release the brake, the arm is swung to the left, (Fig. 6) and the brake-shoe carrier is turned in the same direction by reason of the engagement of one end of the opening 50 with the pin 51, until the catch .26 snaps into engagement with the shoulder 27. Vhen it is desired to manually apply tbe brake, the arm 47 is swung in the reverse direction, compressing spring 52, and a cam edge 47 of the arm forces the catch 26 away from the stop shoulder 27 at once permitting' the spring 24 to apply the brake; the spring 52 returning the arm 47 to normal radial position.

It is believed that the construction and operation of the present improvement will be readily understood from the foregoing with out further detailed description. Manifestly, the inventionI may be modified and varied from the precise details herein shown and described without involving any change in its substantial character or sacrificing any of the advantages thereof. Hence, I reserve Such variations and modications as fairly fall within the spirit and purview of the appended claims.

claim: 1. In an automatic stopping mechanism for talking machines, the combination of a supporting plate, a turn-table above said plate, an arm mounted to swing horizontally above said plate, a brake-shoe carrier pivotally mounted on said plate, a brake-shoe on said carrier movable into and out of engagement with said turn-table, a spring normally urging said brake-shoe into engagement with said turn-table, a lever pivoted on said plate and having its arms connected to each other by a friction joint, one of said arms carrying at its outer end a catch engageable with said brake-shoe carrier, and the other arm carrying at its outer end an upstanding member located in the path of travel of said first-named arm, a spring acting on said lever to force said catch into engagement with said carrier, an arm pivoted concentric with said lever and having a transversely slotted free end through which said upstanding member projects, and manually operable means for swinging said last-named arm whereby to set said upstanding member at any predetermined point in the path of travel of said first-named arm.

2. In an automatic starting and stopping mechanism for talking machines, the combination of a supporting plate, a turn-table above said plate, an arm mounted to swing horizontally above said plate, a brake-shoe carrier pivotally mounted on said plate, a brake-shoe on said carrier movable into and out of engagement with said turn-table, a spring acting to turn said carrier in a direction to apply said brake-shoe, means actuated by said arm on its outward swing to turn said carrier in opposition to said spring and release said brake-shoe, a spring-pressed catch cooperating with said carrier to hold said brake-shoe in release position, means, including a contact stud located in the path of travel of said arm, to release said catch on the inward swing of said arm, and manually operable means for setting said stud at any predetermined point in tIie path of travel of said arm.

3. In an automatic starting and stopping mechanism for talking machines, the combination of a supporting plate, a turn-table above said plate, an arm mounted to swing horizontally above said plate, a brake-shoe carrier pivotally mounted on said plate, a brake-shoe on said carrier movable into and out of engagement with said turn-table, a spring acting to turn said carrier in a direc.- tion t0 apply said brake-shoe, means connected to said carrier, and including a contact stud located in the path of travel of said arm, and struck by the latter on its outward swing, for turning said carrier in opposition to said spring and releasing said brake-shoe, a spring-pressed catch coperating with said carrier to hold said brakeshoe in release position, means, including a contact stud located in the path of travel of said arm and struck by the latter on its inward swing, to release said catch, and manually operable means for setting said last-named stud at any predetermined point in the path of travel of said arm.

ALBERT A. HUSEBY.

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