US1300568A - Brake for talking-machines. - Google Patents

Description

APPLICATION HLED DECES, 29H.

HUBERT BRYANT, 95E' HARTFORD, CI'LTNEC'IG'UT.

To' all whom t may concern: i

Be it known that I, HUBERT C'. BRYANT, a citizen ofthe United States, residing at Hartford, in the cunty of Hartford and State of Connecticut, have invented certain new and useful Improvements in Brakes for Talking-Machines, of which the following is a specification.

rlhis invention has relation tostops for sound reproducing machines, and has for its primary object to provide a device of this character which will be Simple in construction and operation, thereby insuring positiveness of action, and permitting the article to be manufactured in an inexpensive manner.

Another object of the invention is to provide a stop, designed for embodiment in sound reproducing machines of the disk record type, oiany standard make.

A still further object of the invention-is to provide a stop for disk-record sound reproducing machines, embodying a braking mechanism for engaging the 'turn-table, mea-ns applicable to the tone arm for engagging the braking mechanism to operate the same whenl the selection is completed, together with an altered record formed with a spiral groove to receive, the needle at the termination of theselection whereby to insure positive and quick operation of the stop in a manner which will be presently seen.

In addition to the foregoing my invention comprehends improvements in the details of construction and arrangement of the correlative parts to be hereinafter more fully de 'scribed'and particularly set forth in the appended claims.`

ln the accompanying drawings in which simllarand corresponding parts are desig nated by the same characters of reference throughout the several views in which they appear z- Figui'e i, is a view in top plan, partly in section, y with parts broken away to show details of a vstandard form of sound reproducing machine of the disk-record type einbodying my automatic stop.

Fig'. 2, is a view thereof in side elevation. Fig'lu, isa view similar to Fig. l with the parts" in operative position. l Fig. 4, is a detail view in plan disclosing the braking mechanism proper, andV Fig. 5, is a view in section taken on the line 5--5 of the immediate preceding figure.

With reference to the drawinge fio-indi Specification of Letters Patent.

Application tiled December 2B, 1917.

Patented Apr. iti, teniet sei-iai no, seams.

rates the motor box, ll the turn-table having the record 12 superposed thereupon, and l the swinging tone arm.

My invention comprises a plate le which is secured to the top or the motor box be neath the turntable adjacent the periphery thereof', and located in a line which passes through the axis of rotation of the turntable and the axis of rotation of the tone arm. A brake lever indicated generally at l5 is provided, and the same consists of a substantially square plate 16 having opposite corners formed with extensions 17 and 18. The extension i7 is perforated to receive a rivet, bolt, or the like 19 which passes through the plate 14. to pii'otally mount the brake lever thereupon. The other arm 18 is bent upwardly at its terminal as indicated at QD. AThe remaining; two corners of the square plate i6 are 'formed with sleeves 21 which converge 4azrially toward the extension 17, and the adjacent edges ot the plate are provided with ears QQ integrally formed therewith. i The sleeves looseliY receive the ends of a Jfriction member 23 in the'nature oi a cylindrical seri-ion oi' leather or simil-ar material, the ears 22 being' subsequently bent upward to cover the ends ot the sleeves and to bear against the terminals of' said member 23 clearly shown in Figs. el and 5 of the drawings. lt will thus be seen that the intermediate portion oi2 the friction member 23, which. when in place is bent to arcuate formation. is in ay position `to engage the periphery of the turntable, the en tension i7 being; termed with offsets 25 to dispose the friction member in a plane to engage the tiiiii-table. 1lllfieu 'the brake lcver is disposed along a line coincident with a line passing through the airis of rotation of the turn-table and tone-arm the friction member 23 will be out oi' engagement with V apertured to receive a binding Screw 28' tere an 'ure in the strip,

which also en may he a continuation of the inner terminal 4of the groove of the record in which the sound waves are recorded so as to direct the needler sharply toward the center of the record after the selection has been rendered. in use, the parts are adjusted so that when the needle is brought to a point lyin substantially in a plane passing throng the center of rotation of the turn-table and the center of rotation of the tone arm, the extension 20 of the brake lever will be engaged by the arm 26 so as to engage the friction member 23 of the braking lever against the periphery of the turn-table.

It will thus be seen that after the selection has been rendered, the needle will enter the groove 30 and the tone arm will be rapidly moved toward the position shown in F ig. 3 thereby bringing the arm 26 of the tone arm into contact with the brake lever, applying the friction member thereof to the periphery of the turn-table so as to arrest motion thereof. lt will he seen that owing to the fact that the groove 30 extends for approximately one-half the circumference of the record, the turn-table will be stopped practically instantaneously. lhile I have illustrated and described my inventionwith some degree of particularity, l realize that in practice various alterations thereover may be made, and ll therefore desire to reserve the right and privilege of changing the form of the details of construction, or otherwise altering the arrangement of the correlativa parts without departing from the spirit of the invention or the scope of `the appended claims.

Having thus described my inventionwhat I claiin as new and desire to secure by Letters Patent is 1. A. brake ior sound reproducing 4machines, including a lever pivoted at a point beneath the turntable of the machine, a pain of sleeves carried by the lever, and a friction element having its ends seated in support 'for one extension, and a Lacasse said sleeves and its center presented toward said edge.

2. A brake for sound reproducing machines, including a lever pivoted at a point beneath the turntable of the machine, a pair of sleeves carried by the lever with their axes converging toward each other toward the edge of the turntable, and a bowed friction eleinenthaving its ends seated in said sleeves and its center presented toward said edge. I,

3. An automatic stop for sound reproducingI machines, including a plate, a brake lever pivotally connected at one end thereto, said lever having an intermediate square portion, sleeves at oppostecorners of said square portion, and a cylindrical section of soft material having its terminals engaged in the sleeves, wherebyl the intermediate portion of said friction 'member may engage the periphery of the turn-table.

4. A brakeforsound reproducing machines, including a lever pivoted at a point beneath the turntable of the machine and ol'set in its body to a point opposite the edge of the turntable, a pair of sleeves carried by the elevated portion of theV lever, and a friction element having its ends seated in said sleeves and its center presented toward said edge.

5. A brake for sound reproducing machines, including a lever pivoted at a point beneath the turntable of the machine and offset in its body to a point opposite the edge of the turntable, a pair of sleeves carried by the elevated portion of the lever and with their axes converging toward each other toward the edge of the turntable, and a bowed friction element having its ends seated in saidsleeves and its center prey sented toward said edge.

6. An automatic stop for' sound reproducing machines comprising a 'brake lever having an `inte/lunediate square portion with sleeves at, two opposite corners and extensions from the remaining corners, 'a pivotal element composed of a cylinder of leather having-its terminals inserted 'in said sleeves and its center bowed toward the edge of the .turntable of the machine.

ic'tion- In testimony whereof I affix my signature 4 in presence of two witnesses.

HUBERT C. BRYA Nfl nlitnesses R. S. Hamann,

il. ll. Fosa

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