US1198977A - Gramophone. - Google Patents

Description

M. vIGNALI. GRAMOPHONE. APPLICATION FILED En. 4, 1914.

Patented Sept. 19, 1916.

v @mm1/W9@ Marcelo Vignal@ wi {S1/masas MARCELO vrcNALI, or MoN'rEvIDEo, URUGUAY.

GRAMOPHONE.

Specification of Letters Patent.

Patented Sept. 19, 1916.

.Application led February/4', 1914. Serial No. 816,573.

To all whom z't may concern: f

Be it known that I, -MARcELo VIGNALI, a citizen of the Republic of Uruguay, residing at Montevideo, in Uruguay, have. inventedcertain new -and useful Improvements in Gramophones, of which the followu ing is a specification.

" My invention relates to 'apparatus for recording or reproducingy sounds and has particular reference to improvements in a sound box included therein, and embodying a plurality. of diaphragms arranged in a novel mannerl and connected with la single needle-.carrying lever.

An important object .of the inventionJ is to provide means of the abovementioned character, which will record and reproduce sounds, vocal, musical or. the like, in a clear and full manner. u f

A further object of the invention is to provide means ofthe above mentioned character, which is light, strong, durable, simple in construction, and convenient in use.

Other 'objects and advantages of the invention will be apparent during the course of the following description. In the accompanying drawings forming a part of this specification and in which like numerals are employed to designatelike tparts throughout the same, Figure 1 is aside elevation of apparatus embodying my invention, the same being .shown in the op,- 'i

erative position, Fig. 2is a rear end eleva `tion thereof, Fig. 3 is a horizontal sectional view taken on line 3 3 of 2,`Fig. 4 is a longitudinal sectional view taken on line 4 4 of Fig. 1, Fig. 5 is asimilar Vview taken 5.o i erably vertically arranged rings or openl on line 5-5 of Fig. 2, parts being omitted,

and, Fig. 6 is an end view of theneedles and associated elements. y. My apparatus, which may constltute either a recorder 'or reproducer, comprises a f shell or sound box 10, which 1s preferably the openings ofthe rings or frames 13, as shown. The rings -or open frames 13 are provided with` annular grooves 14', receivlng packing rings 15, preferably formed of rubber or some other highly elastic mater1al. Mounted'within the rings or frames 13 and engaging the packing rings 15, are flexible diaphragms or membranes 16, which may be formed of. any suitable material, while I have found that satisfactory results are obtainable by forming them of ivory ory gold. These flexible diaphragme or membranes are held in place by packing rings 17, preferably formed of rubber, and engaging the edges of thediaphragm, as shown.'

These packing rings are in turn held in place by detachable rings 18, preferably formed of aluminum. The rings 18 are connected with the rings or open frames 13 by means of screws 19 or the like, as shown.

' As more clearly shown in Figs. 1 and 2,

the rings or open frames 13 are provided upon their lower portions with depending ,spaced lugs or ears 20, shown in detail in vFig. 5. These lugs or ears 20 are provided with main axially extending screw-threaded openings 21, receiving externally screwthreaded adjusting elements or screws 22. Each of /the screws 22 is provided at its -inner endl with a tapered or conical portion 423,"dereasing in diameter outwardly, as

shown. The numeral 24 designates pivot Studs or elements, passing through openings 2 5 formed through the ends of the lugs or e'ars 20.n The outer ends of the studs or elements 24 are curved or rounded, as shown at 26, while the inner ends thereof are provided with enlarged heads 27, which are adapted to be moved longitudinally within` the screw-threaded openings 21, buthaving no "screw-threaded engagement. therewith.

cast or formed ofalumnum, owing-to the strength and Alightness of such materials sound' box 10 is a reduced tube orneck 11, adaptedfor connection with a horn 12, as

Formed upon the oppositfes,

sides of the shell or sound box 10 'are pre These recesseslor chamberscontain Paid-- 0r Extending forwardly from the' shell' orforked at one end thereof, forming oppo sitely extending passages 14, which" lead into ead 27 is 'provided centrally thereof v openingwr recess 28, receiving the reduced outer" end of 4the tapered extension 23. A

f The numeral 29 designates a vibratory formed upon the opposite faces thereof.

lever, vprovided at one end with ahead 30,' `haying curved recesses or chambers 31 pivot studs 24 extend into the recessesi'l and en age therein, with the elastic ads 32. It is t us seen that the vibratory ever 29 1s plvotally connected between and with the jacent the vibratory diaphragm o The needle may be vheldin the opening 38- lugs or ears 20, toswing in substantially ver-l tical planes, the amount of'friction that thepivotal connection of this lever will offer upon the swinging of the same, being regulated by the adjustment of the screws 22.

Ashmore clearly Vshown in Figsll and 2, the numeral 33designates vertically inclined arms arranged atan -acute angle, and diverging upwardly. Y ,These arms are rigidly connected with the head of the lever 29. and

are preferably cast integral therewith. l, The arms 33 are relativelyrig1d,being preferably formed of aluminum, of which the lever 29 is also preferably formed. ,.1 It isy thus seen that the arms 33 and lever"29 are adapted to swing or vibrate in substantially vertical planes. ,The upper ends of lthe arms 33 are arranged outwardly of nd ad'- membranes 16, and are pivotally connected therewith, as shown at 34.

As more clearly shown in Figs. 4 iand5 the vibrato lever 29 's provided with a longitudine. y `extending opening or recess 35, for receiving a removab e rod or element 36, adapted to be clamped therein by a binding post 37 or the like. The element 3 6 is provided at its lower end With an opening 38, receiving Aneedle 39, which may be constructed of any suitable material, while I have found that highly satisfactory results are obtainable by making it of sapphire.

by frictional engagement or `byl any other suitable'means. i.

The numeral 40 .designates a. cylinder record,.\operati ng-.'in engagement with the needle or needles39. My .apparatus may be just as well employed in connection with a` disk record, the record .4;0A bein simply shown, in connection with the app ratus, for

thepurpose. of illustration In theuiseofthe a paratus as are roducer, it 1s obvious t at as Ithe recor 40 be of the Berliner type with 'Y undulating sound grooves rodable engagement with the needle which ma? horizonte. tates in sli 39, 'such needle will be vibrated,'to impart an oscillatory vibratory movement to the lever 29 and arms 33, which movement causes the diaphragmsor membranes 16 to .properly vibrate, to' reproduce the sound.

When the apparatus is used as a recorder,

v'the operation is reversed, the diaphragmsVVV being primarily vibrated, causing the lever 29 andarms 33 to partake of an oscillatory vibratorymovement, 'whereby vthe needles 39 will be vibratd while having slidable contact with .the revolving record cylinder,

to cutthecsoundgrooves therein. It is to-be understood that the form of my invention.herewith shown and described is to be taken as'a referred example lof the v same, and that various changes in the Shape,

Havlng describe-d my invention, claim: 4

lateral vibration'of the member, internally screw-threaded tubular ears connected with the sounding box, pivot studs rotatably mounted within the ears and extending outwardly therefrom to engage the highly elasticpads, screw-threaded adjusting elements `arranged within the screwfthreaded A tubular ears with their inner ends engaging the pivot studs, and arms connected with the needle-carrying'me'mber and with ble diaphragms. t

In testimony whereof Iy aiix my signature in presence of two witnesses. MARCELO VIGNALI.

Witnesses:

`LrioronnoAsrEsI, i JosE'AGUs'mN PIANAVIA. a

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