US1061729A - Sound-box. - Google Patents

Description

P. GATUGGI.

SOUND BOX.

APPLICATION FILED APILZG, 1912.

Patented May 13, 1913.

Wbfmmes: @5101 at. @2114,

UNITED STATES PATENT OFFICE.

PLINY CATUCCI, OF NEWARK, NEW JERSEY, ASINQR TO A. F. MEISSELBACH &

BROTHER, A CORPORATION OF NEW JERSEY.

soUivn-Box.

To'all whom it may concern:

Be it known that I, PLINY CATUCCI. a citizen of the United States, residing in the city of Newark, county of Essex, and State of New Jersey, have invented'certain new and useful Improvements in Sound-Boxes,

of which the following is a specification.

I this kind, and at the same time a material reduction in the cost of manufacture.

The invention also lends itself admirably to a more delicate adjustment of the parts than has hitherto been accomplished in sound boxes of the. character and kind for use onthe so called diskrecord, such as use the sharp pointed steel stylus needle.

In the drawingsaccompanying this application, Figure 1 illustrates a. front or face elevation of the sound box with the stylus lever and stylus shown in plan. Fig. 2 illustrates a longitudinal section of the same. Fig. 3 is a perspective viewof the clamping ring. Fig. 4 illustrates the stylus lever and stylus with the arts thereof separated to show the detailsoi theirconstruction. Fig. 5 illustrates an enlarged section of the jeweled screw pivots used to support the stylus lever. Fig. 6 is a cross section of the'stylus lever showing the bead stamped therein for strengthening thesame. Fig. 7 illustrates the st lus lever blank. Fig. 8 illustrates a sli ht y modified form of stylus lever.

imilar reference numerals refer to like parts throughout the specification and drawings.

The box body consists of a plane disk of metal 1 of considerable thickness, and "1s provided with the circumferential flange 2. Through the center of the disk 1 extends the aperture into wlnchis rlgldly inserted the connecting thimble 3, saic thimble being provided for the purpose of connecting the sound box to the sound conveylng tube 4. On the front face of the sound box body 1 is rigidly secured the clamping ring by means of the screws 5 screw threaded into the flange 2. The latter is made from a disk of metal cut out in the center and Specification of Letters Patent.

Application filed April 26, 191?. Serial 0, 693,353.

in Fig. 2. This clamping ring 'a substantially perfect stylus lever.

Patented May 13, 1913.

stamped to the shape shown in cross section beneath the inwardly extending flange 6, to-the outer face of its flange 7, a trifle les. than the combined thickness of the two gaskets 8 and the diaphragm 9, so that when the clamping ring 5 is rigidly secured to the flanges 2 of the box body 1, the gaskets 8 will be slightly compressed with the margin of the diaphragm there-' between. Inasmuch as the clamping ring 1s accurately'gagcd as to thickness and di mensions, it will be seen that the gaskets 8 with thediaphragm 9 may always be put under the same compression, and this uniform compression is found to be one of the important elements in the character of reproduction of sound in devices of this kind. The clamping ring 5 is provided, upon the one side, with an extension 10, integral with the body of said ring, and this extension is also provided with a pair of lugs 11, bent at sa d lugs are provided with screw threaded apertures 11 to receive the screw threaded pivots 12 in accurate alinement with each other.

It is one of the objects of this invention to provide a stylus lever, which in itself, will contain all of the elements found to be requisite in a stylus lever and its supports combined. The stylus lever proper is formed from sheet steel blanked to the shape asillustratcd in Fig. 7, and it consists of the strip 13 having the laterallugs l4 rearwardly directed and provided with accurately positioned pivot sockets 15. The end of the blank is also provided with rectangular projections 16. In this shape it is ready to be pressed into the form illustrated in Figs. 1, 4, and 8, wherein the lugs 14 are shown bent at right angles to the general plane of the blank, while the lateral projections 16 are bent into tubular shape and the forward end is given a camber and provided with a 'still'ening bead 17. The

stylus lever as thus formed, I findto be very rigid longitudinally and yet to possess all of the transverse elasticity required in In the tubular part, formed by the bending of the projections 16, is located the stylus or needle socket 18. This socket consists of a cylindrical piece of metal having the socket hole 19 extending into one end thereof and the has a depth right angles to the plane of the ring and lateral screwv threaded aperture 20 to receive the set screw 21, whereby the needle 99 is rigidly held in position. The socket piece 18has a diameter a trifle larger than the inner diameter of the'tubular part of the stylus lever, so that when the socket 18 forced into the tubular part of the stylus lever, the arms 16 of said tubular part will firmly gri the socket piece. 1 also pro- -'vide an ap nature 23 on the upper side of the tubular parts of the stylus lever, so that the set screw may pass through it and into the screw threaded aperture 20 to grip the neeedle 22, and thus the single set screw performs the double function of rigidly holding the needle in the socket 159, and at the same time the set screw prevents any displacement of the socket piece 18'.

In practice, the pivot screws 12 may be of ordinary case hardened steel with cone points, or if desired, they may be of a special construction with jeweled points. To make jeweled pivots the ordinary machine screw, like that shown in Fig. 5, may be used, said screw having its point counter-bored as at .24, with a small aperture 25 extending completely through the axis of the screw. A. cone point sapphire jewel 26 is inserted into the counterhore 2% where it is held in position by cement, such as shellac or amylucctate $27, The small aperture 25 is for the purpose of preventing them-upping of the hubhle of air in the minute counterbore which might result i displacing jewel 26.

In Fig. 8 I have illustrated a slightly modifid form of stylus lever. In this case, instead of curving the forward portion of the lever as illustrated in Fig. 4, the shank i3 is made perfectly straight with a rectangular bend 13 made in its upper; end, with of course, a further rectangular bend 13 rovided for attachment to the center of the diaphragm by means of a rivet ofother attaching means as 28. In, order to render the stylus lever perfectly igid, although made of spring steel, 1 provide the shank 13 with a longitudinal head 17 running throughout the length of said shank, and extendlng down to the cylindrical or tubular portion 16. The lateral arms 14 are'also of the sanie shape and configur on as the corresponding parts of the form trated in Fig. 1,- lfnerder however, to der these lateral arms or lugs 1% more elastic or resilientin the plane of the metal and yet longitudinallyrigid, the necks ct arms-are made somewhat wider provided with the apertures 29 so as to reduce their cross, section and yet preserve the. longitudinal rigidity of the structure. In this modified form every part of stylus lever is intended and so constructed he practically rigid with the exception the two lateral arms or lugs 14:; these for the purposes and objects above set forth are made resilient in order that the pivot screws 12 may find a yielding bearing upon the stylus lever. i

From the above description, it will be seen that I have by the construction illustrated, provided a sound box and its requisite parts at once simple in construction, easy to Ina-"- nipulate, not likely to getout of order, and accomplishing all of the objects set forth in the preamble.

I claim, p i 1. In a phonograph sound hex, the combination of a body section, a clamping ring having lateral supporting lugs thereon, and a. diaphragm, a rigid stylus lever, havin resilient supporting lugs 'pivotally secure between the'lateral supporting lugs upon said clamping ring.

2.4;, In a phonograph sound box, the combination of a body section,-a diaphragm, a clamping ring for securing said diaphragm to said body section, lateral lugs upon said ring, adjustable pivot pins, extending through said lugs in'axial alinement with each other, a rigid stylus leverjl'sconnected to connected to the center of said diaphragm, a

pair of resilient supporting lugs upon "said stylus lever, adjustable pivots extending inwardly from said rigid lugs for pivotally supporting'between them said rigid stylus lever through said resilient lugs thereon.

4. In a phonograph sound box, the combination of a body section, a diaphragm and a flanged clamping ring for securing .said diaphragm to said body section, a pair of rigid lugs into-g a1 with said clamping ring, and extending laterally therefrom, pivot pins adjustably secured in said lugs, and a rigid stylus lever secured to said diaphragm and resilient lugs upon said lever located between said rigid lugs and hel therein by said pivots.

' 5, A stylus lever for phonograph sound boxes, comprising a rigid strip of metal having a lugs extending relatively upon opposite-sides of its median line, with their eniitics bent at right angles to the gen- 1 plane of the lever and provided near extremities with ivot sockets, sesc-nd pair of resilient. ugs extencing respectively upon opposite sidesof one can .treniity of said lever, being bent into a tul ular resilient ring, a cylindrical. stylus needle socket extending into and fricticnally held by said tubular rim? a clamuin 3 screw each other,said pivot screws each having an anal counterbore extending throu h said tubular resilient rin through sai socket to bear upon the sty us needle inserted into the axis of said socket.

' 6. In a bone bination o a ho curately secured in each of said counterbores, a rigid stylus lever connected to said diaphragm and resilient supporting lugs on 15 said lever for resiliently supporting said lever between said jewel pivots.

aph sound box, the com- In testimony whereof I have hereunto set y section, a diaphragm, a

clampnlgofiing for secluringlsitid diaphragm my hand.

to sm y section atera ugs upon said ring, adjustable 'pivot screws extending PLINY C throughisaid lugs in axial alinement with Witnesses:

LOUIS M. SANDERS, therein, a jewel pivot ac W. B. WAL'IZINGER.

-fioilies o( thi'a patent may be obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, D. 0.

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