US1321559A - Sound-reproducing machine - Google Patents

Description

E. SCHWARTZ AND L. MANDEL.

SOUND REPRODUCING MACHINE. APPLICM'ION FILED APR. 10 19i6.

1 21,559; Patented Nov. 11,1919.

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E. SCHWARTZ AND L.MANDEL.

SIOUND REPRODUCING MACHINE- APPLICATION FILED APR-110.1916. 1,321,559. Patented Nov. 11, 1919.

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l ""IIIJIII I mm m mm lmlmmlllll III Illllllllllllllllllll E. SCHWARTZ AND L. MAND E-L. SOUND HEPRODIUCING MACHINE. APPLICATION FILED APR. 10. me.

1 521,559. Patented Nov. 11, 1919.

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7 l 02155 zZa/zdei, mcz i UNITED STATES PATENT OFFICE.

EDWARD SCHWARTZ 'AND LOUIS MANDEL, OF CHICAGO, ILLINOIS, ASSIGNORS, BY

DIRECT AND MESNE ASSIGNMENTS, TO THE MANDEL CORPORATION, A CORPO- RATION or DELAWARE,

SOUND-REPRODUCING MACHINE.

Specification of Letters Patent.

Patented Nov. 11, 1919.

Application filed April It), 1916. Serial No. 90,027. i

To all whom it may concern Be. it known thatwe, EnwAnn SCHWAR'IZ and Louis lvhnvnnn. citizens of the United States. residing at Chicago, in the county of Cook and State. of Illinois, have invented certain new and useful Improvements in 'Sound-Reproducing Machines. of which the following is a specification. I

'l i'hisinvention relates to improvements in sound reproducing machines and one of the objects of the same is to provide an impro (1 tone arm for supporting the repro- 'ducer or sound bOX, having means whereby the. sound'box may be adjusted with respect to the arm to position the stylus for use with records of the type having what is known as lateral sound wave indications, and also to position the. stylus for use with records having what is known as hill and dale sound indications, and securing means for retaining the sound box in its adjusted positions.

A further object is to provide an improved mounting forthe tone arm and improved means operating to assist in holding the supporting arm to relieve the record from the pressure. of the stylus point, thereby preserving therecord from being cut. or worn out by the stylus.

A further object. is to provide an improved hollow sectional touearm. the sections of which gradually increase in size in cross section and the wall of each section being (Ulliillllottsl)' curved in cross section. with the result that quality andvolume of the re 'iroductioii will be obtained, while the sound waves will gradually cxpand and a continuous metallic sound willbe obviated.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear. the invention consists in the features of novelty in substantially the construction. combination and arrangement of the several parts hereinafter more away showing the tone arm andthe manner for supporting the same.

Fig. 2 is a perspective view of the yielding supporting means for the tone arm shown in Fig. 2.

Fig. is an irregular sectional view as taken on line 33, Fig. 3.

Fig. 3 is a sectional view taken on line 3 Fig. 3.

Fig. 4. is a detail top plan view of the parts shown in Fig. 2 and with the sound box arranged in a horizontal position with respect to the record support.

Fig. 5 is an enlarged detail view partly in elevation and partly on section of the sound box and showing the stylus socket in section.

1 Fig. (5 is an enlarged detail vertical sectional view of a portion of the tone arm,

showing one form of yielding support for the arm.

P Fig. is a sectional view as taken on line (-l, 1 1g. (3.

Fig. 8 is a sectional view taken on line 88, Fig. 6.

Fig. 9 is a view partly in elevation and partly in section of a portionof the. tone arm showing the manner of connecting the sound box thereto.

Fig. 10 is a sectional view on line 10-10, Fig. 9.

Fig. ll is a modified form of fastening device for retaining the. sound box in its adjusted position with respect to the tone arm.

Fig. 12 is a sectional view on line 12, 12, Fig. 11.

Fig. 1 5 is a view similar to Fig/11 of. a modified form of fastening device.

Fig. 14 is a sectional view taken on line 14, 1 Fig-l3.

Referring more particularly to the drawings. the mmieral 2t) designates the cabinet and 21 the record support of a sound reproducing machine, and the numeral 22 designates the top of the support for the-tone arm. This top is provided with an opening 23 therein with which one end (if the sound amplifying born 24 registers. Secured to the'support 22 and adjacent the opening 23, is a bearing 25, which is provided with a flanged portion 26. that adapted to project into the opening 23 and serves as a means whereby the bearing 25 maybe properly positioned with respect to the opening. The tone arm comprises a plurality ofsections 26, 27, 28 and 29, each of'which sections is of a uniform diameter throughout its length and circular in cross section so as to 'formcontinuous unobstructed circular surfaces for each of the sections and the diameter of each succeeding section increases in size from the diameter of the next preceding section. Connected with the extremity of the section 29 is acollar 30 which is preferably. curved on its outer surface and this collar projects into the hearing- 25, the latter being provided with an open groove 31 adapted to receive pins or lugs .32 on the collar 30, so as to hold the parts together, and these lugs and-groove permit the'tone arm to be adjusted laterally with respect to the record support, while the groove and lugs are of such a size with respect toeach other that the tone arm, may

.be moved in adirection toward and away from the record support. In order to permit the assembling or disassembling of t ese parts, one of the walls of the groove is provided with one 'or' more opleningt'33 to perv mit the lug to pass theret roug Arranged upon the bearing 31 are spaced stops 34, 35-which are adapted to be en gaged' by a; projection 36 carried by the section 29', and these stops limit the lateral adjustment ormovement, of the tone arm. The stop 35 is provided witha shoulder 37 which in turn has a stop 38 connected'therewith and this shoulder 37 is adapted to be engaged by the projection 36 to hold the tone arm elevated forthe purpose of ad- -justing the stylus or for holding the stylus duced portion 39 is preferably provided elevated to permit a change of record. The section 26 of the tone arm is connected with the section 27 so as to rotate axially with relation thereto, preferably by means of a reduced portion 39 on the section 27, which telescopes into the section 26, and this rewith'a slot 40 into which a pin or lug 41 projects so as to limit the extent of rotation of the section 26 with respect to the arm. This lug 4:1 is preferably in the form of a screw havin threaded engagementwith a bearing 42 ornled out of the material of which. the section--26 is constructed.

The sound box 43 .is connected with the section 26 on the tone arm'and this sound box is provided with a stylus holder 44, in

which the stylus 46 is adapted to be held.

In order to support the tone arm and to relieve the record of the weight of the tone arm and sound box, thereby preserving the :record and preventing the stylus from cutthe roller 49'will have engagements with the inner face of the projecting flange 26 on thebearing 31 to roll thereover when the tone arm is shifted laterally.

The free extremity of the section 26 of the tone arm is deflected laterally as at 50, and the sound box is rotatably connected with this extremity 50. The connecting means preferably comprises a sleeve 51 having a flange 52'and this flange rests upon a washer of insulation 53 arranged ad acent the back of the sound box, the latter being provided with spaced projecting lugs 54,

rovided with screw threads therein. The insulation 53' is provided with a series of openings which receive the'lugs 54 and by means ofwhich lugs the insulation is held in position. A washer of insulating materlal surrounds this sleeve 51 and rests surrounds and rests upon the insulation and the insulation and washers are secured to the sound box by means of fastening screws 57 passing through the washer and insulation and engaging the threads in the respective lugs 54. The opening in the washer 56 is of such a size that the inner -wall thereof is spaced some distance from the 'sleeve.51, so that when the sleeve is inserted or telescoped into the extremity 50 of the section 26 of the tone arm, the washer will be'spaced from the adjacent portion of the tone arm,thereby thoroughly, insulating the sound box from theftone arm. In order to limit the degree of rotation of the sound box with respect to th'esection 26, a lug 58,

preferably in'the form of a screw is provided which passes through a slot in the extremity 50 and is secured to-the sleeve 51. To retain the sound box in its adjusted position, spaced depressions 60 may beprovided in the extremity 50 of the section 26' and a spring controlled lug 61 is provided which passes through a suitable opening in the tone arin so as to be'seated in the recesses or depressions- 60 when either one of the latter is moved adjacent the lug.-

With this construction it will be manifest i that the sound box will be so adjusted that it will b in a perpendicular position with respect to the record support and the styluscan. be used with records 'havin' what is lgpown as lateral-wave indication. The sound box, may alsofbe rotated-with respect to the arm so; as to "properly-position the stylus when the sound box is in avertical position. the provision of the adjustable section 26 of the tone arm, it will be manifest that th sound'box may be positio'hed so that it will be substantially horizontal with respect to the record support and this will permit records having what is known as hill and dale sound indications to be played on the same machine.

It will also be apparent that by the independent adjustment of the sound box with respect to the section 26 of the tone arm, the stylus may be positioned so that it will be in a direct line with the center of the ton arm, so that the stylus, when the sound box is adjusted for the hill and dale records,- will not engage the sides of the sound wave indications.

In order to position the stylus with respect to the socket 44, for the different positions of the sound box, the socket is provided with an opening 62, whichreceives the stylus 46 when the sound box is in a vertical position. This socket is also provided with a threaded opening 63 which holds theusual screw for securing'the stylus in position. This threaded opening, how- 'ever, is adapted to receive the threaded extremity 64 of the-stylus 65 when the sound box is in a horizontal. position, and the. socket is further provided with another opening (36 for use when the sound box is in a horizontal position, but this opening (36 is arranged in an inclined position with respect to the. opening-6?, to accommodate a type-of record of still another manufacture.

In Figs. 9 and 10 there is shown a modified form of securing means for holding the sound box in its adjusted position with respect to the section and in this form the extremity 50 of the section 26 is provided with a slot 67, the extremities of which are enlarged as at 68. A spring 69 is secured to the inner face of the sleeve 51 and projects into the extremity 50. This spring supports a ball 69, which is adapted to entereither one or the other of the en largements 68 of the slot 67 when the sound box is rotated, thereby yieldingly holding the sound box in its adjustedposition.

In Figs. 11 and 12 another form is shown and comprises an elastic ring 70 having a lug 71 adapted to enter a slot 72 in the extremity 50 of the section 26, to be seated in one or the other of the spaced openings 73 in the sleeve 51. the spring being provided with a second lug 74. entering the slot 72 to hold the parts assembled.

In Figs. 13 and 14 the spring 75 is.provided wit-h a lug 76 entering an opening in the extremity 50 and is also provided with another lug 77 adapted to be seated in one or the other of the openings 78 in the sleeve 7 51 when the latter is rotated.

1 In Figs. 6, 7 and 9, there. is shown a modified form of the yielding support for the tone arm and comprises a bracket 79 located within the extremityof'tlw tone arm and in which bracket a stem 80 is adapted to move. This stem has connected with it an anti-friction roller 81 adapted to engage and move upon a guide or support 82 arranged within the bearing 25, and an elastic member 83, such as a spring surrounds the stem so and operates thereon to projectthe anti-friction roller 81 so that it will roll upon thesurfaee 5+. and will yield to permit the roller to pass on to and off of the surface 82 when the tone arm is laterally adjusted.

I What is claimed as new is:

1. In. a sound reproducing machine, a hollow tone arm and sound box communicating therewith, means at one end of the arm for supporting the arm for lateral movement and also for movement toward and away from the record support, a surface within the sound duet, yielding means disposed on the inside. of the arm and at the said end thereof and movable over said surface for relieving the pressure of the stylus upon the record.

2. In a sound reproducing machine, a hollow tone arm and sound box communicating therewith, means at one end of the arm for supporting the arm for lateral movement and also for movement toward and away from the record support. and spaced stops and a lug for limiting the lateral movement of the arm. said spaced stops and lug being disposed one on the arm and the other on the support. one of said stops being provided with a shoulder. upon which the lug is adapted to rest to support the stylus out of operative relation with the record;

' 3. In a sound reproducing machine a hollow tone arm and ound box communicating the pressure of the stylus, said yielding means projecting into the said bearing and a contacting surface on the bearing with which the said means contacts and over which surface the said means moves.

4. In a sound reproducing machine a hollow tone arm and sound box eou'ununicating therewith. means for supporting the arm by one end for lateral movement and also for movement toward and away from the record support. yielding means disposed on the inside of the arm, and a surface within the sound ductover which said yielding means moves for relieving the record of the pressure of the stylus, the first said means embodying cooperating means for securing the parts against separation.

warm and movable over 5. In a sound reproducing machine, a hollow tone arm and sound box communicating therewith; means at one end of the arm' for supporting the arm for lateral movement and also for movement towardand away from the record support, the sald means emthe said flange for I relieving the pressure of the stylus upon the record.

In testlmony whereof we have signed our '15 names to this specification, in the presence of two subscribing witnesses, on this 6th day of'April A. D. 1916.

-* EDWARD SCHWARTZ.

LOUIS MANDEL.

WVitnesses:

"M. B. SILVERMA'N, J. H. loc -run, J r.

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