US1332661A - Sound-reproducer - Google Patents

Description

H. S. DEACON.

SOUND REPRODUCER.

APPLIATION FILED Nov. 4. 1915.

1,332,661 I Patented Mar. 2,1920.

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Beat-known tliat"="I, HARLOW S. DmuoN,

a citizen of the United States, and a resident of the city of Philadelphia, county ofcPhiladelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Sound-Reproducers, of which the following is a full, clear, and exact description.

There are today two distinct types of records for sound reproducing machines on the market, namely, that having a laterally undulatory groove'in its surface, and that having in its surface a vertically undulatory 1 groove.

Ordinarily, machines designed to accommodate one of these kinds of records are provided with a sound reproducer peculiarly adapted to the specific type of record with machine does not wish to be restricted to the use of records of only one of the above-men- 'tioned types. Therefore, the reproducer hereinafter described has been perfected-for the purpose of playing records of either type upon a machine so equipped. 85 Another object is to provide a reproducer type of record may replace a record of another type, and the reproduction of the one equal the reproduction of the other, without altering the position of the sound box with respect to the machine proper. And another object is to provide a stylus barwhich is particularly well adapted for use inthe improved reproducer, the same presenting a longitudinal central axis in the form of a continuous and regular curve from'the stylus-receiving head to the point of attachment to'the diaphragm. a

" .Further objects and advantages of the invention are fully brought out in tlie follo'wing description, when read in CODjllIlOtlOl'l with the accompanying drawings, in which .Figure' 1 is a side elevation of a sound box tion; Fig. 2 is an'under side elevation in brackets 1% an which it is intended to operate, and when it lsde'sired to make the reproductlon of either.

or. sound box of such construction that one embodying the preferred form of the inven EnsrnrnsPATENT EFIGE. "1i or? rn rlnniinrnrn, r nNsYIJyAnIA.

Sound-announces. i I I v r tiea ofI-etters Patent. Patented Mar. ,2, 1920. Application m Iovenber 4, 1315. Serial No. 59,5 54. I

line with thestylus; and Fig. 3 is a front thesame upon the hollow tone arm of a talking machine (not shown), said casing and lating gasket 9.

"To one peripheral edge portion of' the sound box is a air of integral shoulders 'or' d 15, Which in the case of a reproducer formed by dies may comprise separate members secured to the casing coupling being separated by a sound-insu -proper in any suitable; manner.- Each. of

the said brackets is augularly directed at its extremity 16 and through that portion thereof extend suitable bearing p'inions 17, which in the present instance are suitably pointed screws with lock washers 18 for maintaining the former .in a given position. The bracket 15 islonger than the bracket 14:, and in fact this istrue to such an extent that the line of the pins 1? lies at an angle of about forty-five degrees with the plane of the casing5. 'As a result of this arrangement the inner end portion 2Ov of the stylus bar vibrates the diaphragm inwardly and outwardly, equally well if the impulses given-to the stylus 21 are in a plane substantially parallel with, or at right angles to, that of the said diaphragm, or in the general directions of the lines A and B.

While there is possibly some energy lost in the transformation of the undulatory vibrations of the record grooves in one direcvtion to those of the stylus bar in another point of attachmentto the diaphragm in the form of 'a regular, three dimensional, or

, spiral curve with no sudden or sharp bends. I This prevents local bending of the said 110 stylus bar from the axis of oscillation to the stylus bar and insures its oscillation as a substantially rigid member throughout its length.

Having thus described my invention, what 5 I claim and desire to protect by Letters Patent of the United States is: i

1. A sound reproducer, comprisinga casing, a diaphragm carried by said casing, a stylus bar connected to said diaphragm, and amounting for said stylus bar posltioning the transverse axis of vibration of said bar, when said reproduoer is in normal operative osition, at an acute angle with said casing,

with said diaphragm, and with a horizontal 15 plane.

2. A sound reproducer, comprising a casing, a diaphragm carried by said casing, astylus bar connected to said diaphragm, and

a mounting for said stylus bar positioning the transverse axis of vibration of said bar, 20 when said reproducer is in normal operative position, at an acute angle with said casing, with said diaphragm, and with a disk record lying in its normal horizontal plane and from which sound'is adapted to be repro- 5 duced by said reproducer.

In witness whereof, I have hereunto setmy hand this second day of November, 1915.

t HARLOW S. BEACON. Witnesses:

J; STUART FREEMAN, AMY Hoax;

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