US1296975A - Recorder and reproducer for talking-machines. - Google Patents

Description

L. L LEEDS.

RECORDER AND REPRUDUCER FOR TALKING MACHINES. APPLICATION FILED JAN. 31. I9|6.

. 1,296,975; Patented Mar. 11,1919

WITNESSES. INVENTUR STATES PATENT OFFICE.

LORING L. LEEDS, SHORT HILLS, NEW JERSEY, ASSIGNOR 'I'O FRANK M. NEEDHAM,

OF CHICAGO, ILLINOIS.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed January 31, 1916. Serial No. 75,271.

To all whom it may concern.

Be it known that I, LORING L. Imnus, a citizen of the United States. and resident of Short Hills, in the county of Essex and State of New Jersey,

y improved connection is of a very firm and insures aclear reyet elastic character with a minimum of production of sounds disturbing noises.

A specific example of my invention is shown in the accompanying drawings, in which Figure 1 is a side elevation of a recorder or reproducer embodying my invention; Fig. 2 is a front view thereof; Fig. 3 is a partial vertical section on line 33 of Fig. 4; Fig. 4 is a partial vertical section on line 4-4 of Fig. 3; Fig. 5 is a front elevation and Fig. 6 aside elevation of a block forming part of my invention; Fig. 7 is a face view, and Fig. 8 an edge view of a cup forming part of my invention.

The body 11 of the sound box, with the diaphragm 12 and the sleeve or sound-conducting tube 13, are constructed in any customary or approved manner. On one side of the body 11 are projected two (parallel) lugs 14, preferably integral with said body, and provided with alining transverse apertures 14' threaded to receive screws 15. The inner ends 15' of these screws are tapered or pointed, while their outer ends 15" are preferably slotted so that they may be turned readily by means of a screw-driver. To hold the screws in their adjusted position, nuts 16 may be screwed against the outer faces of the lugs 14.

The inner ends of the screws 15 fit into recesses or holes 17 provided at the center of cups 17 made of steel or other elastic material, these cups being quite thin and dished to give them considerable elasticity which may be further increased by slitting the cups from the periphery inward, as indicated at 17 The convex faces of the cups 17 are directed toward the lugs 14, and the "edges or peripheries of saidlcups are seated upon opposite sides of a block 18 which forms part of the stylus-support. The block has circular recesses as shown, best in Fig. 6, to receive the cups 17, and projections 18 are thus formed at the corners to hold the cups against lateral movement (see Figs. 5 and (i). The block is preferably also formed with a transverse aperture or passage 18 which connects the two recesses in which the cups 17 are seated. An extension 18 of the block 18 is provided with a perforation (see Figs. 3 and 6) through which extends the stylus arm 19 screwed to the diaphragm 12 in the usual manner and provided with a socket 19 and clamping screw 20 to hold the point or stylus 21. The stylus arm, is secured to the block, 18 rigidly, in fact, these two parts might be made one integral with the other.

It will be seen that the connection of the stylus arm 19 and of its block 18, with the body 11 of the sound box, is very firm, yet elastic, the cups 17 being capable of yielding slightly, in every direction, the dished form and the slitting of these cups at 17" giving them a high degree of elasticity. In connection with the recesses upon which they are seated, these cups 17 form air-chambers (see Fig. 4) connected by the passage 18", and the body of air contained in these chambers and passage forms a cushion further increasing the elastic action of the cups 17. This body of air is in communication with the surrounding air, by means of the slits 17". The elastic tension of the cups may be increased or decreased as desired by a longitudinal adjustment of the screws 15 in the apertures 14'.

The construction described is relatively simple and insures a firm, yet elastic connection, the sound being reproduced clearly and with a minimum of disturbing noises.

Various modifications may be made without departing from the nature of my invention as set forth in the appended claims.

I claim:

1. A sound-box for talking machines, comprising a body with two lugs projected therefrom and provided with alining screwthreaded apertures, screws adjustable in said apertures, nuts for locking said screws, a stylus-supporting her having a block provided with recessesin the faces adjacent to the ends of the screws, and with a passage connecting said recesses, and elastic cups seated in said recesses and having their convex surfaces toward the adjacent lugs, said cups having central recesses to recelve the ends of the screws, and slits at the periphery to increase their elasticity.

1 2. A sound-box for talking machines, comprising a body, spaced alining members carried by said body, a stylus-support extending between said members, and elastic cups, slitted at their peripheries, interposed be- 10 tween the inner ends of said alining members and the adjacent faces of the stylussupport.

In testimony whereof I have signed this specification in the presence of two subscribmg witnesses.

LQRING L. LEEDS. Vitnesses:

GEORGE V. CASE, J12, Amcnmm'r T EMERSON.

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