US732292A - Sound-reproducing machine. - Google Patents

Description

PATENTED JUNE 30, 1903..

E. 1). GLEASON. SOUND REPRODUGING MACHINE.

APPLICATION FILED NOV. 4, 1902.

N0 MODEL.

m: NORRIS PEYERS co. Pnorauwa, vusumumu, o. c.

UNITED STATES l Patented June 30, 1903.

PATENT OFFICE.

EDWARD D. GLEASON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JULIUS WELLNER, OF PHILADELPHIA, PENNSYLVANIA.

SOUN D-REPRODUCING MACHINE.

SEEGIFIGATION formingpart of Letters Patent No. 732,292, dated June 30, 1903.

Application filed November 4;, 1902. Serial No. 130,011. No model- To all whom it may concern:

Be it known that I, EDWARD D. GLEASON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain the sound-box to rotate and bring the stylus into engagement with the record with yielding pressure and in mechanism for disengaging the stylus from the record at the end of its forward movement and returning it in an elevated position to the starting-point, all of which will be hereinafter claimed and fully described.

Referring to the accompanying page of drawings, Figure 1 illustrates a plan view of a sound reproducing machine constructed after the manner of my improvements, with a portion of the casing broken away to more clearly show some of the internal working parts; and Fig. 2 is a side elevation of what is illustrated in Fig. 1

Referring to the reference-letters of the drawings, A represents an electric motor, the armature A of which is mounted upon a driving-shaft B, which is provided with a wormwheel 0, operating the feed mechanism, and a bevel-wheel D, operating the turn-table carrying the record-disk. The turn-table E is mounted upon a shaft E, which is provided with a bevel-gear E meshing with the bevelgear D, which, as before stated, is operated by the driving-shaft B. The record-disk E rests upon the turn-table E and is turned by a pin e, projecting from the turn-table into an opening 6 in the record-disk. f

I F represents the sound-box, which is provided in the ordinary way with a diaphragm F, a stylus-lever W, and a stylus F The sound-box F is fulcrumed to an armG, which is connected to and forms part of abracket Gr,

having bearings g and g, slidable upon a fixed rod H, supported by uprights n and 'n. The arm G in moving forward an d backward rests upon a rail R, which it is forced to engage by reason of a fixed leaf-spring S, bearing against a projecting ledge s on the under side of the bracket G. As it is not an essential feature of my invention that the arm G should have any movement other than its forward and backward movement upon the rod H, the rail R in some instances may be dispensed with and the bracket G guided upon a rod H, square in cross-section, instead of the round one I have illustrated.

The feeding of the sound-box and stylus forward is accomplished by means of the stylus engaging the helical groove of the record, and the stylus is caused to bear upon the record with yielding pressure by reason of its pivotal connection with the arm G and a rod T, fulcrumed to the sound box at one end and carried by a bearing 23 at the other, between which I and the extreme'end of the rod T is a spiral spring 8. The return-feed for the sound-box and its connecting parts is accomplished by the worm O engaging a worm-wheel I, which is provided with a segmental rack J, timed to engage at intervals a pinion K on a shaft K, which also carries a segment L to receive a metal band L, one end of which is connected to the segment and theother end to the bracket G. 7

After the sound-box has been carried forward by the engagement of the stylus with the groove of the record and before the backward or return feed comes into play or at the instant it becomes operative it is necessary to disengage the stylus from the record. This is accomplished by placing on the under side of the segmental rackJ a cam M, which at a fixed time presses against a roller m, mounted in the end of a rod 112, guided in a bearing m and connected to a lever m The lever m operates a rocking frame 0, which embraces ashaft 0, to which the lever m is secured, and uprights 0 0', secured at the lower end to the shaft 0 and at the upper end to a rail 0 The extreme end. of the rod T, which moves the sound-box, is provided with a bearing t, in which is supported a roller 2?, which, being at all times in the path of the rail 0 is moved to turn the sound-box and raise the stylus from the record when the rocking frame 0 is operated through the medium of its connecting parts and the cam M.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. A sound-reproducing machine, comprising a revoluble record-disk, a sound-box provided with a diaphragm and stylus, an arm carrying the sound-box journaled upon a fixed bar, a segment provided with a hand, one end of which is connected to said arm, a pinion for turning the segment and a segmental rack connected to the driving mechanism and adapted to turn the pinion and thereby return the sound-box and stylus after they have been fed forward by the groove of the record, substantially as described.

2. A sound-reproducing machine, comprising a revoluble record, a sound-box provided with a diaphragm and stylus, the latter being operated in one direction by the groove of the record, a movable arm having a bearing in which the sound-box is free to turn, a rod fulcrumed to and adapted to turn the soundbox to release the stylus from the record at the end of its forward movement and a cam operated by the driving mechanism to move said rod, substantially as described.

A sound-reproducing machine, comprising a turn-table provided with a record-disk, a sound-box provided with a diaphragm and stylus carried in one direction by the groove of the record, a slidable arm, one end of which is guided in a bearing and the other being arranged to form a journal in which the soundbox is free to turn, a segment provided with a band connected to said arm, a rack-andpinion mechanism to operate the segment, to perform the return movement, a rod fulcrumed to the sound-box and arranged to turn the same and lift the stylus at the end of its forward movement, and a cam for operating the rod, substantially as described.

4. A sound-reproducing machine, comprising a rotatable record, a motor for operating the same, a fulcrumed sound-box provided with a diaphragm and stylus, an arm carrying the sound-box slidable upon a guide, a spring in terposed between the arm and soundbox to cause the latter to turn and bring the stylus to bear upon the record with yielding pressure, so that the sound-box will be carried forward by the groo\"e of the record, a cam adapted to turn the sound-box and lift the stylus at the end of its forward movement, and a mechanism comprising a segmental rack and pinion to return the sound-box to its initial position, substantially as specified.

In testimony whereof I aflix: my signature in presence of two witnesses.

EDXVARD D. GLEASON.

\Vitnesses:

DAVID S. WILLIAMS, ARNOLD KATZ.

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