US1197782A - Sound-box. - Google Patents

Description

P. WEBER.

SOUND BOX.

APPLICATION FILED MAR. s. 1911.

1 1 97,782 Patented Sept. I2, 191%.

PETER WEBER, OF ORANGE, NEW JERSEY.

SOUND-BOX.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed March 8, 1911 Serial No. 613,117.

J. i/ all W/w/I? ii: may concern:

lie it known that I, Pnrnn WEBER, a citizen oi' the United States, and a resident of Orange. in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Sound-Boxes,

of which the. following is a description.

My invention relates to phonograph reproducers, and my object is to provide an improved reproducer wherein the stylus supporting member has great freedom of movement in tracking the grooves of the soundprovided which renders it unnecessary to move any parts other than the stylus supporting member itself, when said member is oscillated laterally to the record groove in tracking the same. Furthermore, means are provided by my invention for locating the stylus centrally of the record groove, after a deviation from this central position in tracking the groove.

Other objects of my invention are the provision of improved detailsof construction and combinations of parts hereinafter more fully described and claimed,

In order thatmy invention may be more clearly understood, reference is hereby made to the accompanylng drawings, llustrating a preferred form thereof, and in which:

Figure 1 is a central vertical section ofa reproducer embodying my inverttion, some of the parts being shown in side elevation; Fig. 2 is a view similar to Fig; 1 of a modification; Fig. 3 is a fragmentary bottom plan view of the device illustrated in Fig. 1, the stylus supporting member being shown in its central position; and Fig. 4 is a similar view of the parts shown in Fig.3, the stylus supporting member being. shown deviated from its central position.

In all of the views, corresponding parts the same reference nu;

are designated by merals.

Referring to the drawing, the diaphragm 1 is secured to a body member 2 providedffl'heldfrom downward movement therein by l with an annular flange 3 which is securely held within a tubular member 4.

represents a pivot whereby the member 4 and the parts secured theneto are con nected 'for vertical movement to the tone arm 6 of the phonograph.

In order to facilitate the movement of the reproducer with respect to the supporting arnrand at the same time insure a good con nectlon between these parts, a socket 7 is provided in the end of the arm 6 and the member 1 is provided with a spherical surface 8 engaging the Wall of the said socket.

As shown in F ig. 1, the flan e 3 is seated in a recess 9 in the member 4, and a passage of substantialb uniform diameter extends from the flange 3 into the arm 6.

The body 2 comprises a member 19 and an annular member 11 threaded to the peripheryfiof the member 10, the latter being {no vided with a conical forwardly extending surface 12 adapted to form a tapering sound chamber in the rear of the diaphragm. Two annular gaskets 13, 13 are piaced on' cpposite faces of the'diaphragm at the. periphery thereof, andtogetlier with the diaphragm areclamped between the member 10 and the flange 1% on the member 11.

Secured to the lower portion of theoutcr curved surface of the member 11 is a bracket provided with parallel lngs 16, 16'', be tween which the arm 17 projecting substan tially at right angles from the body of the elongated lever 18 is pivotally mounted by means of a pivot 19.

Referring to Fig. 1, 20 represents a projection extending from the center of the diaphragm, and secured thereto by a screw or other suitable fastening means 21. .This projection is provided transversely thereof With a vertical opening flaring outwardly from the center to both of its extremities, the long arm of the lever 18- being slidably' mounted in the said opening; By the employment of a connection of this type'between the lever 18 and the diaphragm, the free backward and forward vibration of the v diaphragm is not disturbed by the angular ity of the lever 18 with respect thereto. in the form of my invention shown in this figure, the lever 18 is made tubular and the stylus supporting arm 23 is pivotally con nected therewith by a shaft 24 rotatably mounted in the opening in said lever and sound a set screw secured in the end of said shaft and engaging the top of the said lever. The arm 15 preferably secured to the shaft 24 by a set screw 26 and carriesin its forward end a stylus 27 held in 11911;; moved laterally by the record groove in "he reproduction of a record, a stylus mounting having but little inertia and great freedom of movement is obtained.

Referring, to Fig. 2, the lever 18 is provided at its upper end with a rearwardly turned portion 29 secured to the diaphragm 1. In this modification, the arm 23is pivotally mounted on :rset screw or similar support 30 screwed into the lower end of the lever 18 in alinement with the long arm of the said lever, he head of said set-screw engaging the lower surface of said arm. The stylus 27 is secured to the arm 23 as in the form of my invention shown in Fig. 1.

In both 'of' the modifications hereinbefore described, a spring 32 is secured toand extends rearwardly from the stylus supporting arm, the outer end of this spring being slidably engaged between the opposing eonvex surfaces forming the walls of the notch 33 in the lug 34 which extends downwardly from the bracket-15., Movement of the stylus supporting arm to either side of its normal axial position bends the spring 32, as drown, for example in Fig. 4, so that as soon as the deviating force is removed from the said arm, the latter is returned by the spring to its normal position. A stop 35 on the lower end of the lever 18 (or 18') is-adapted to be engaged by the rear vertical edges of the stylus supporting arm to limit the oscillation of said arm to prevent breaking of the spring 32 or removal of the same from the notch It is understood that my invention is not limited to the precise device or cm-istruction shown, but may be varied within the scope of the appended claims without departing from the spirit of ray-invention.

Having now described my invention, what I claim as new and desire to secure by Letters'Patent of the United States is as follows:

the center of said diaphragm, said lever.

having an opening extending longitudinally In a sound box, the combination of a 7.0

diaphragm, a support therefor, a lever fulcrumed on said support and connected with the center ofsaid diaphragm, said lever having an opening extending longitudinally therethrough, a shaft rotatably mounted in said opening, a, stylus arm secured to said shaft, and yielding means for centering said. arm, substantially as described.

3. In a sound box, a diaphragn'i, a sup port therefor, a projection extending -from the renter-.of said diaphragm and provided with a transverse opening flaring from the center to both of its extremities, and a stylus lever fulcrumed on said support, and extending slid-ably through said opening, sub- 35' stantially as described.

4. In a sound box, the combination of vibratory means, a support therefor, a stylus arni connected with said means and adapted to vibrate the same, said arm being free to oscillate laterally with respect to said vibratory means in a plane substantially at right angles to said means and Without imposing stress thereon, yielding means for centering said arm, and a stop to limit the oscillation of said arm, substantially "as de-. scribed.

5. In a sound box, the combination of vertically disposed vibratory means, a support therefor, a lever connected with said viln-atory'means and pivotally mounted on 's'aidsupport for. movement about a horizontal axis to vibrate said means, and a stylus carrying member supported by said lever so as to oscillate laterally with respect there- 10:;

to about an axis at an angle to the hori 'Zontal and in a plane at an angle to said vibratory means without imposing stress thereon and without moving the stylus from operative position, substantially as described.

(5. In a sound box, the combination of vibratory in ians', a support therefor, a stylus arm connected with said means and adapted to vibrate the same, said arm being arranged to oscillate freely in'a plane at an angle to said-vibratory means without im;.. posing stress thereon and without moving the stylus from operative position, and

yielding means for centering said arm, sub- 12a stantially as described.

- 7. In a sound box, the combination of vibratory means, a support therefor, a lever pivoted on said support and connected with said vibratory means, a stylus arm supported by said lever so as to freely oscillate late ally with respect thereto in'a plane at an angle to said vibratory means Without imposing'stress thereon and without moving the stylus from operative position, and

' through said lever,

yielding means for centering said arm, substantially as described.

8. In a sound box, the combination of member supported by. said lever for pivotal movement in a plane at an angle to the Vibratorynneans without moving the stylus from operative position, said member having connection with said vibratory means substantially as described.

9. In a sound box, the combination of vibratory means, a support therefor, a lever pivoted on said support and connected with said diaphragm, and a stylus carrying member supported by said lever so as to be free to oscillate about an axis at an angle to the axis of the pivot of said lever and in a plane at an angle to said vibratory means Without imposing stress thereon and Without moving the stylus from operative position, substantially as described.

10. In a sound box, the combination of vibratory means, a support therefor, a lever pivoted on said support and connected With said diaphragm, and a stylus carrying member supported by said lever so as to be free to oscillate in a plane at an angle to said vibratory means without imposing stress thereon, said member having connection with said "ibratory. means through said lever, substantially as described.

This specification signedand witnessed this 7th day of March, 1911.

, PETER WEBER. Witnesses: 'FREDERIGK BACHMANN.

Anna" R.

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