US730109A - Sound-box for talking-machines. - Google Patents

Description

' No. 730,109. I I PATENTED JUNE 2, 1903.

E. GLEASON. I v

SOUNDBOX FOR TALKING MACHINES.

APPLICATION FILED JULY 29. 1902.

H0 MODEL.

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UNITED STATES PATENT' ()rmcij.v

Patented June 2,1903.

EDWARD D. GLEASON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO' ELLSWORTH A. HAWTHORNE AND HORACE SHEBLE, OF PHILADELPHIA, PENNSYLVANIA.

SOUND-BOX FOR TALKING-MACHINES.-

SPECIFICATION forming part of Letters Patent No. 730,109, dated J une 2, 1903.

Application filed July 29, 1902. Serial No. 117,4:95. (No model.)

To all whom it may concern: ment may cause the desired vibrations of the Be it known that I, EDWARD D. GLEAsoN, diaphragm the latter is provided with a dua citizen of the United States, residing in plexwedge-block8, engaging withthe bentin- Philadelphia, Pennsylvania, have invented ner end of the stylus-lever, as shown in Fig. 1,

Improvements in Sound-Boxes for Talkingsaid lever when in this normal or neutral po- Machines, of which the following is a specifisition being. centrally disposed between the cation. Wedges, but when moved in either direction One object of my inventionis to provide a from this central position acting upon one or simple and efficient formof elastic mounting other of the wedges, so as to cause vibration to for the stylus-lever of the sound-box; and anof the diaphragm to an extent dependent upon other object is to provide for the action of the extent of this lateral deflection. the stylus-lever upon the diaphragm by move- My improved method of mounting the styment of said stylus-lever in the plane of the lus-lever may, however, be adopted in that diaphragm instead of in a plane at right anclass of sound-boxes in which the stylus-lever I 5 gles thereto, as usual. These objects I atvibrates in a plane at right angles to the plane tain in the manner hereinafter set forth, refof the diaphragm and acts directly upon the erence being had to the accompanying drawlatter, Figs. 2 and 3 illustrating two difierings, in which- I ent embodiments of my'invention as applied Figure 1 is a sectional view of a sound-box to that type of sound-box. I 2o constructed in accordancewith my invention. In the construction shown in Fig. 2 the7o Figs. 2 and 3 are sectional views of other stylus-lever is connected to a tube 7 which forms of sound-box embodying some of the is secured to the sound-box casing 2, and in features of my invention; and- Figs. 4, 5, and the construction shown in Fig. 3 the stylus- 6 are face views, respectively, of the soundlever is secured to a tube 7, which instead 2 5 boxes shown in Figs. 1, 2, and 3. of being connected directly to the sound-box 1 represents the tubular stem of the soundcasing 2 is connected at its opposite ends to box, and 2 the enlarged or cup-shaped pordiaphragms 9,-carried by short tubes or rings tion of the same, which receives the dia- 10, secured to said casing 2. l phragm 3, the latter being mounted in this It will be observed that in the different 3o portion of thesound-box in any available forms shown the tube has a different axis 8::

manner. In the present instance the diafrom that of the stylus. phragm rests upon an internal annular shoul- A tubular mounting of the character deder in the enlarged portion 2 of the casing scribed absorbs toaconsiderable extent those and is retained in'position thereon by an elastremors or infinitesimal vibrations imparted 3 5 tie ring 4, engaging an internal annular to the stylus-lever by reason of the scraping groove in the casing. or scratching of the stylus against the walls The stylus-lever 5 is secured to one side of of the undulatory grooves of the record. a tube 7, projecting outwardly from the rim Hence the vibrations of the diaphragms corof 'the casing 2 at one side of the same, so respond more closely than in constructions 40 that vibrations of the lever under the action employing solid bars or strips to the actual-9o of the walls of the undulating groove of the vibrations represented by the undulatoryrecord upon the stylus 6 will cause torsional grooves, and the reproduction is consequently 1 strain upon the tube 7. Hence the tendency sharp and clear. V of the latter is to maintain the stylus-lever Having thus described my invention, I 45 constantly inaneutral intermediate position claim and desire to secure by Letters Patand to restore it to this position when it is vientbrated in either direction therefrom. 1. A talking-machine sound-box having a The stylus-lever in the sound-box shown in diaphragm, a casing therefor, and a stylusj Figs. 1 and etvibrates in a plane parallel with lever mounted upon said casing through the the diaphragm, and in order that this movemedium of an interposed tubewhos x is 4. A talkingmachine sound-box having a diaphragm, a casing therefor, a stylus-lever mounted so as to vibrate in a plane parallel to the plane of the diaphragm, and a duplex Wedge-block through the mediumof which the stylus-lever acts upon the diaphragm, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ED WARD D. GLEASON.

Witnesses:

F. E. BEcH'roLD, Jos. H. KLEIN.

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