US1236476A - Phonograph-diaphragm. - Google Patents

Description

- H. D. PENNE-Y.

PHONOGRAPH DIAPHRAGM.

APPLICATION FILED JUNE 28. 1916.

1,236,476 Patented Aug. 14, 1917.

Wl'irzeflsge: I Inventor: flarold;fll enney UNITED STATES PATENT OFFICE.

HAROLD D. PENNEY, 0F PELHAM, NEW YORK, ASSIGNOR T0 ROBERT L. MOELROY. OF

NEW YORK, N. Y.

PHONOGRAPH-DIAPHRAGM.

Specification of Letters Patent.

Patented Aug. 14, 1917.

Application filed June 28, 1916. Serial No. 106,303.

To all whom it may won 1mm Be it known that l. l-luanuo D, Pi'nxnr, a citizen oi the United States, residing in lelham. in the counly ol' \Vcstrhester and State ot- New York, have invented certain new and useful l'm norements in lhonograph-Diaphragms, o1 whieh the iollmving is a specification.

My present invention relates to an improvement in mountings 'l'or diaphragms for talking machines and other diaphragm uses, and colitemplal'es the use of a IlUIPlCllHlOTllllg mounting for a diaphragm plate wherein the same is held in floating eoi'vpcralion with its relative cooperating parts.

The main object o'-[' my invention contemplates the use of a diaphragm'disk. or plate, having mounted thereon a beaded or annular connecting means. preferably. of anonvibrating, 1ion- \;'ieldiug material and a housing mounting therefor, and the introduction therebetween of a resilient or yielding material whereby the diaphragm may be firmly anchored to its housing without metallie contact tlwre\\'it-h, and at the same time be permitted maximum vibration.

In the drawinga-accompanying herewith. Figure l. is a l'rout elevation of my device.

Fig. 2 is a quarter sectional view taken on the lines 23, of Fig. 2.

Fig. I is an enlarged fragmenlal sectional. view.

Fig. l is a sectional view oi one means or mounting said diaphragm for use.

My present device has for ils accomplishment lhe same purpose as is set forth in my copcnding application,- Serial No. 106,304, liled June 2S, 1916, wherein there is also shown the use of a resilient or yielding means between the diaphragm disk and its mounting l'ramo .or anchorage, whereby the said diaphragm is held in such lloating connection as will permit o l greater aluplitude or moreuu-nt of said diaphragm. as a whole, when in use, andas applied to phonographs, allerting a greater volume of air through such movement, and thereby increasing the tone volume, and, at the same tiuie so'l'tening the metallic tones that would occur by the use of a diaphragm supported at its peripheral edge hy'a. rigid metallic'support.

In the present modification, as indicated in the ligures, l provide -a diaphregal-plate, or disk l, with a rigidly mounted beaded edge or peripheral bead-ring 2, of substantially key hole form in cross section, having the annular securing flange 5 formed integral therewith, and extending at a rightangle, or substantially a right angle, to the inner annular peripheral diaphragm reeeiving slit of the head-ring 2; althou h bead-rings of other form of section may e used. In forming this bead-ring, I prefer to form the same ofsome material, which, while comparatively solid, is of an ext-rudahle or plastic nature, such as lead or any of its alloys. or of other known noirresili ntlike. substantially solid substance. Such head-ring is constructral in such a manner as to have a'slit in the inner peripheral wall, to receive and firmly encompass the peripheral edge, and may be firmly swa ed into position. thereon by the use of suitsible dies; but I have not thought it essential to show or describe such operation herein.

The anchorage-Ting or frame 3, by whichthe disk isheldjfi position in the sound box, may be of the customary annular form shown, or maybe an integral member of the sound-box or-reprodueer, The frame 3 is usually provided with an annular securingring or flange 4, usually and preferably of the same thickness and length, and of the same diameter as is the securing-flange of the bead-ring 5, so that when the ring or Frame 3 is opposite to 5, the flanges 2 and t will be opposed and in registry.

As in my copending application, a mold, denoted by 0, is provided, formed of two halves 7 and 8; the said mold members or halves being provided with a moldcavity 10, for holding the frame-ring 3, and tho diaphragm 1, carrying the annular bead-.

ring 2,-iu operative relation; and a yieldingamiular mid-ring is formed in the .mold cavity of space 10, between the mold pieces" 7 and b: as shown in Figs. 3 and 4, either by vulcanization or other suitable method; so as to bind lhe diaphragm 1 carrying the head-ring 2, the yielding elastic mid-ring, and the peripheral male-threaded anchorage or frame 3, into one homogeneous structure, and such mid-ring, is usually formed of pure elastic Para rubber; and in the vulcanization oi the same in the mold, as shown in Fig. 4, the rubber is firmly cemented to the llauges of metal. 2 and 4 respectively, so that it requires eonsiderable force to tear them apart. j

When so formed, while not lessening to volume of'tone.

It is ob 1011's that many modifications may be made nihe-shape in. cross section, or

otherwise of the frame 3. of the bead-ring 2, or of the yielding securing mid-ring 10 that unifies them in a homogeneous single structure, without departing from the scope of my invention.

I claim:

1. A diaphragm mounting of the class: described comprising a rigid frame having a yielding annular body affixed thereto, and diaphragm having a peripheral member embedded in said yielding body.

2. A diaphragm mounting of the class de scribed, comprlsing a rigid frame having a yielding annular body ailixed thereto, and a diaphragm having a beaded peripheral member embedded in said yielding-body.

i 3. A diaphragm having a peripheral non- -yielding bead iattached thereto which head is provided with an annular securingflange extending therefrom at a right angle to the plane of the diaphragm.

' 4. A diaphragm mounting for phonegraph di'aphragms comprising a diaphragm having a non-yielding annular bead, an an nular frame therefor of non-yielding mate rial; and a 'yieldingannular body connect-- ing said diaphragm. and said. frame: together,

5. A diaphragm mounting of the class described comprisin a rigid frame having a yielding body a xed thereto, and a diaphragm having a member embedded in said yielding body.

v 6. A diaphragm mounting for phonov graph diaphragms, comprising a diaphragm having aperip on, and a rigid annular frame or member eral non-yie1dmg bead theretherefor, having a resilient material molded tlicrcl'irt\\'uon; thereby 'lorn'iing a yielding body for connecting said diaphragm-bead and. said .l'reniu. together; whereby said diaphragm will be held. in floating relation therewith.

7. The combination with an annular metallic securing member or ring, having an annular securing flange projecting from one face adjacent to the center of the periphery of'the ring; a dia 'ihragm having a peripheral bead scc'l'lred thereto having a peripheral linnge projecting toward the like peri 1l1crnl-llnngc ol lhe s 2l.: |n'ing-ring; and mid-ring formed of soft resilient material securing tin flanged scouring-ring and the iliai 'ilii'zlgii'i bond together so as to form a flouting annular resilient support for the dia 'ihrngm.

8. A diaphragm having a member arranged lo hold the edge of the diaphragm and a securing member extending from the diaphragm holding member,

9. A diaphragn'ihaving a member arranged to hold the ofthe diaphragm and a securing mcn'iber extending from the diaphragmholding member at an angle to the plane of the diaphragm.

10. A diaphragm mounting of the class described comprising a rigid frame, having a securing member extending therefrom, a

diaphragm having a member arrangedto hold the diaphragm. and a securing member extending therefrom, and a yielding'conneetin g member joining the securing members of the frame and diaphragm respectively.

11. A diaphragm moi'lnting of the class described comprising a rigid frame having a securing member extending therefrom at right angles, a diaphragm having a member arranged to hold the diaphragm and. a securing member extending therefrom at right angles, and a yielding connecting member joining the securing members of the frame and diay hrag1n respecti ely.

HAROLD D.

/Vitnesses: v

JAMJIES Power, HENRY I. Smcnn

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