US896008A - Sound-box. - Google Patents

Description

PA'I'IENTED AUG. 11, 1908.

E. D. GLEASON.

SOUND BOX.

APPLIOATION FILED NOV. 14, 1907.

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E. D. GLEASON.

SOUND BOX.

APPLICATION FILED NOV. 14, 1907.

2 SHEETS-SHEET 2.

I N VE N TOR fizz/0M3 67606011,

WITNESSES;

ATTORNEY UNITED .=STATES PATENT OFFICE.

EDWARD D. GLEASON, OFMOORES, PENNSYLVANIA, ASSTGNOB. TO VICTOR TALKING MACHIN] COMPANY, A CORPORATION OF NEW JERSEY.

SOUND-BOX.

Specification of Letters'Patent.

Patented Aug. 11, 1908 Application filed November 1Q, 1907. Serial No. 402,059.

To all whom it may concern:

Be it known that I, EDWARD D. GLEASON, a citizen of the United States, and a-resident .of Moores, Delaware county, and State of Pennsylvania, have invented certain new and useful Im rovements-i'n Sound-Boxes, of whlch the fol owing is a full, clear, and complete disclosure.

The main object 0 his invention is to provlde an improvedstylu nd mounting.

Other objects will appear in the following deicri tion:

nt eaccom an 'n drawin s Fi re 1 is a front elevatio of d s ound ba hons t ructed in accordance with this invention; Fig. 2 a longitudinal section, and Fig. 3' a to plan view of the same partly in section; igs. 4 and 5 are a front elevation and a longitudinal section respectively of modified forms of 2o tlns invention; and Figs. 6, 7, and 8 are a front elevation, a longitudinal section and a top plan view respectively of a further modificatron in the form of this invention.

Referring to the drawings, particularly to Figs. 1, 2'and 3, the device comprises a cylindrical casing 1 having a cylindrical bore 2 provided with a V shaped groove 3 adjacent the front of'the casing. The diaphra m 4 is held in place between the gaskets 5 and 6, the outer one 5 of which rests in the said V sha ed groove, and the inner one rests in the ang e between the bore of the casing and the rear wall thereof. The stylus bar 7 is provided with" an arm 8 extending rearwardly and laterally from the bar, the outer end of the arm beingpivoted to adownwardl exfltendin lug 9 upon the side of the soun box casing y means of the screw 10 which passes loosely throu the arm and is threaded into the lug. .The portion of the arm extending rearwardly from the stylus rests slidably a ainst a flattened ortion 11 of the casing. T e u per end 12 0% the stylus bar is turned towar and phonetically connected as usual .45 to the diaphragm, and a web or brace 13 is arranged upon the inner side of .the bar between the upper curved ortion and thejadjoining vertical ortion o the bar, to prevent the bar from yie ding to bending stresses.

. 5o For the ur ose of tensioning the bar to P ll 'prevent a tooee vibration thereof, a plate spring 14 is provided having its innerend rigidly secured by means of the screw 1-5 to the 'inner end of the'said' lug 9 of the sound box casing, the outer end of the spring resting against the outer end of the swinging arm '8 supporting the stylus bar, whereby the s ring acts to slightly resist the vibration of t e stylus.

The free end of the stylus bar 16 is provided with the usual socket, and the stylus needle 17 fitting in said socket. For the purpose of holding the needle in osition in its socket, a plunger 18 is provi ed fitting into a socket 19, extending into a boss 20 upon the side of the stylus bar, said socket communicating at its inner end with the socket which holds the stylus needle. The inner end of .the plunger 18 is ressed against the upperendof the needle y means of a spiral spring 21,0ne end of which is connected to the outer end of the plunger, and is extended to form a handle 22, andthe other end of which is rigidly connected -to the stylus bar by means of a screw 23.

. In this form of my invention, it is obvious 4 that the stylus bar is mounted to swing as a whole ina circular ath into and out of alinement with an axia plane of the sound box, but for the short distance which the stylus bar moves the direction of motion ap roaches closely a straight line perpendicu Far to the diaphragm. g

In Figs. 4 and 5 are shown a modification of this invention, in which the sound box casmg 24 is provided with a lug 25 on the rear side thereof, through which the stylus bar is pivoted upon an axis at right angles to theaxis of the sound box b means of a screw 26, the stylus bar 27'be1ng provided with a rearward extension 28 substantially parallel to the axis of the .box, and resting slidably against a flattened portion 29 of the casin and having at its inner end a hub 39, whic is rotatably mounted upon the said screw 26 to form a swinging support-for the stylus bar. The inner end of the stylus bar is ,turnedtoward the diaphra m as usual, but is not connected to the diap liragm, the inner extremity of the bar bein provided with a plate 31, extending latera ly upon opposite sides of the bar, the inner surface of the plate being substantially fiat and resting against the outer face" of the diaphragm 32. The stylus bar is provided with the usual needle 33, held by the set screw 34, but if preferred, a construction similar to that shown in Figs. 1, 2 and 3 ma be used to hold the needle in lace.

t is obvious that in this modi ed form of the invention, when the stylus bar is vi- 110 brat-ed by a sound record, the flattened plate at the upper end of the stylus bar will swing in a circular direction in a plane at right an- -gles to the diaphragm, and the ends of the bar 36 by means of a screw 37 which asses loosely through the stylus bar, and is t readed into the said lug. The screw for pivoting the bar is substantially perpendicular to the diaphragm, so that the stylus is thus mounted to swing in a plane substantially parallel to the diaphragm. The inner end 38 of the stylus bar is flattened in a direction subs ntially parallel to the diaphragm and tapered from the pivoted portion of the bar inwardly,

. and its extremity is pointed and turned toas to make it more yiel wards the diaphragm, but is not connected to the diaphragm as is usually the case, but instead rests within the substantially V shaped groove 39 of a spring 'cross bar 40,-

which extends across the front of the sound box, the cross bar being rigidly connected at its ends to the sound box casing by means of screws 41. This springcross bar is tapered from its outerv ends inwardly 'to points near the center ofthe bar where the bar is 'enlarged to form the said V shaped recess for the reeep'tion of the inner end of the stylus bar, the cross bar being tapered inwardly so tion than near its outer ends. bar is provided at its outer end with a socket for the rece tion of the stylus needle 42,

' which is hel in place by the screw 43, but if preferred, a construction similar to that shown in Figs. 1, 2 and 3 may be used instead of the screw 12 to retain the needle.

With this construction in mind, it is obvious that when the stylus bar is oscillated in the usual manner by means of a sound record, the inner end of the bar will slide laterally over the wedge like faces forming the V shaped groove of the cross bar, and cause the cross bar to vibrate laterally. By means of the rod 44 which is connected at one end to the cross bar, and at its other end to the diaphragm 45 the lateral motion of the cross bar is transmitted to the diaphragm to reproduce the sound waves corresponding to the movements of the stylus ba r The two sound boxes shown in Figs. 4 to 8 are intended to be carried upon the end of a swim 'ng arm, which will give the stylus need e a suitable inclination to the record. For this purpose an arm having an end turned obliquely away from the record-maybe used or the arm may be straight, and the tubular connecting portion of the sound boxmay be ng at its central por-- Thei stylus.

formed-at an; oblique angle to the casing as indicatedby the dotted lines in Figsn5 and 7 respectively.

Although I have shown only a few of the forms in which this invention may be embodied, it is obvious that other forms might be devised, and various'changes in the details of the construction of the various forms might be made within the scope of the appended claims, without departing from the spirit of this invention or sacrificing any of the adcasin t 2. In a sound box, a stylus bar mounted to oscillate on an axis parallel to the longitudinal axis of said bar.

-3. In a sound box, the combination with a diaphragm, of'a stylus bar mounted-to. oscillate into and out of longitudinal alinement with an axial plane of said sound box'on an axis Iiarallel to said diaphragm'.

4. n a sound box, the combination with a diaphragm, of a stylus bar mounted to oscil-' late upon'an axis parallel to itslongitudinal axis and to said dlaphragm.

5. In a sound box, the combination with a casing, of a stylus bar, and a support for said bar yieldingly mounted and normally free to slide against said casing in a plane extending at an angleto the bar;

6. In a sound box, the combination with a casing, of a diaphragm, a stylus bar, and a support for said bar yieldingly mounted and normally free to slide against said casing in a plane transverse to the bar and substantially perpendicular to the diaphragm.

7. In a'sound box, a stylus bar having a socket, a stylus needle in said socket, a'sec- 0nd socket transverse to said first mentioned socket communicating therewith, a plunger plunger socket arranged transversely of said st lus socket and in communication there with, the axes of the two sockets being in the same plane, of a plunger engaging in said plunger socket and a spring to hold said plunger in place to retain a stylus in said stylus socket, one end of said sprmg being connected to said plunger and extended to form a handle: g

9. In a sound box the combination with a stylus bar having a stylus socket and a plunger socket arran ed transversely of said stylus socket of a p unger in said plunger socket and a spring fixed at one end and secured adjacent its other end to said plunger, the latter end of said sprin pro'ecting beyond said plunger to form aIiandie therefor. 10. In a sound box, the combination with a diaphra m of a stylus bar having. a'stylus socket and mounted tooscillate upon an axis parallel to the axis of said socket and substantially in the plane of said diaphragm.

11. In a sound box, the combination with a diaphragm of a stylus bar having a stylus socket and mounted to oscillate upon an axisparallel to the axis of said socket to swing the axis of said socket into and out of longitudinal alinement with an axial plane of the sound box.

12. In a sound box the combination with a diaphragm of a stylus bar having a stylus socket and mounted to oscillate upon an axis parallel to the, socket and parallel to the plane of the diaphragm to bring the axis of said socket into and out of longitudinal aline' mentwith, an axial plane of the sound box.v

13. In a sound box the combination with a casing, of a diaphragm, a stylus bar, phonetically conri'ected to said diaphragm at one end and having a stylus socket at its free end, an

arm connected to said bar andextending laterally therefrom, and a pivot parallel to said socket and substantially in the plane of the diaphragm, connecting said arm to said sound box casing. Y

14. In a sound box the combination with a casing, of a'diaphragm, a stylus bar phonetically connected to said diaphragm at one end and having a stylus socket at its free end, an arm connected to said barand extending laterally therefrom, and a pivot parallel to said socket and in the plane of said diaphragm, connecting said arm to said sound ox cas ng. g

15. In a sound box, the combination with a casing of a diaphragm, a stylus bar, an arm secured-to said bar and extending rearwardly and laterally therefrom, and a pivot substantially in longitudinal aliiiement with the plane of the diaphragm, connecting said arm to said casing.

' 16. In a sound box the combination with a casing of a die hragm, a stylus bar, an arm secured to said ar and extending rearwardly and laterally therefrom, and a'pivot substantially in lon itudinal alinement with the plane of the d1aphragm,'connec-ting said arm to said casing, the portion of said arm extending rearwardly fromlthe stylus bar being in sliding contact with said sound box lasing l7 "in a sound box, the combination with a casing of-a diaphragm, a stylus bar, an arm secuged to said bar and extending rearwardly .ing, a pivot connecting said arm and said lug and laterally therefrom, a pivot substan- 5 tially in longitudinal alinement with the plane of the diaphragm, connecting said arm tosaid casing, and a spring to yieldingly replane of the diaphragm, connecting said arm a to said casing, and a spring en aging against the end of said arm to yielding y restrain the vibration of said stylus.

' 19. In a sound box, the combination with a casing of a diaphragm, a stylus bar, an arm secured to said bar and extending rearwardly and laterally therefrom, a lug upon said casing, a pivot connecting said arm and said lug, and a spring secured to said lug and engaging the end of said arm.

20. In a sound box, the combination with a casing of a diaphragm, a stylus bar, an arm secured to saidbar and extending rearwardly and laterally therefrom, a lug upon said casand a flat spring secured to said lug and engaging the end of said arm, the portion of said arm extending rearwardly being in sliding contact with said casin and said pivot being substantially in the p ane of said dia-. phragmand parallel to said stylus bar.

21. In a sound box, the combination-with a casing, of a stylus bar, and a transverse arm 7 rigid at one end with said bar, and in sliding contact with said casing and pivoted to said casing at its opposite end. 4

22. In a sound box the combination with a casing, of a stylus bar, a transverse arm rigid at one end with said bar, and in sliding 105 contact with said casing, and pivoted to sai casing at its opposite end, and yieldingmeans 4 to restrain the oscillation of said stylus bar.

23. In a sound box the combination with a casing, of a stylus bar, a transverse arm rigid at one end with'said bar, and in sliding contact with said casing and ivoted to said casing at its opposite end, an a spring fixed to said casing and engaging the end of said bargto restrain the oscillation of said. bar.

24. 'In a sound box, the combination with a casing, of a'diaphragm, a' stylus bar provided with a stylus socket, and a support for said bar yieldingly mounted and normally free to slide against said casing in a plane ex-' tending substantially perpdndicular to the 120- longitudinal axis of said socket and to said diaphragm. A

In witness whereof I hereunto set my hand this 13th day of November, A. D. 1907..

EDWARD D. GLEASON. Witnessest- A. I. GARDNER, ALEXANDER PARK.

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