US1241673A - Reproducer for phonographs. - Google Patents

Description

P. S. SORHISEE'Q.

REPHODUCEh FOR HWNOGRAPHS.

APPLICAHON FlLE D JULY 1. 191(5- Pz'i'efmted Out.

PETER S. SORENSEN, OF NORTH MILWAUKEE, WISCONSIN.

REPRODUCER FOR PH ONOGRAPHS.

Specification 01 Letters Patent.

Patented Oct. 2, 1917.

Application filed July 1, 1916. Serial No. 107,011.

To all whom it may concern.-

Be it known that I, PETER S. SoiinNsnN, a citizen of the United States, and a resident of the village of North Milwaukee, 1n the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Reproducers for Plionographs; and I do hereby' declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

Among the different kinds of phonographs and talking machines now on the market, are two generally well known types, one designed to use a needle tracing point or stylusto track over a flat disk record and the other adapted to use a jewel for the purpose, and this difference in construction is due to the different character of records used on the two types of machines. The

v records for use on a machine *using a needle point or stylus are provided with a sound Wave impression of one character while the records for use on the other type of machine are provided with sound wave impressions I of another character. The one acts to set up the sound vibrations through the reproducer by causing a transverse movement of the reproducing point and the other by a substantially vertical or longitudinal move ment thereof. In each instance the oscillation of the tracing point is transmitted to a diaphragm whereby the sound is reproduced in accordance with the sound wave impression upon the record.

It is an object therefore of; this invention to construct a reproducer Which is capable of universal use on either of the types of records mentioned by simple shifting movement of the tracing point, the tracing point in one position being. capable of movement to reproduce sounds -from one kind of record and in another extreme position of adj ustment capable of movement to reproduce sounds from another type of record.

It is also an object of this invention to construct a reproducer for use on. talking machines wherein the tracing stylus is pivoted in offset relation with respect to the diaphragm so as to be capable of vibrating or oscillating either transversely or longitudinally dependent upon its angle of ad justment with respect to they diaphragm to permit the sameto be used with diil'erent types of records to reproduce sounds therefrom according to the particular sound wave impression on the record.

It is also an object 01. this invention to construct a reproducer for talking machines capable of universal use upon different types able into different positions whereby vibra-' tions of different character may be imparted thereto from the sound wave lines of different character on different records used upon the machine.

I It is finally an object of this invention to construct an improved type of adjustable reproducer simple in construction and operation and capable of being used on a rec- 0rd having either transverse sound wave lines disposed in the plane of the record or those of constant radius but varying in depth of impression on the record.

' The invention (inv a preferred form) is illustrated in the drawings and hereinafter more fully described.

In the drawings:

Figure l is a fragmentary side elevation of a disk record playing machine illustrating the use of a rcproduccr embodying; the principles of my invention thereon.

F ig. 2 is an enlarged side elevationo'f the sound box mounted on the sounding arm.

Fig. 3 is a top plan view of the sounding arm showing the adjustable connection for supportiugthe sound box adj ustably thereon.

Fig. 4 is a detail section taken on line l-4.- of Fig.

Fig. 5 is of F ig.

Fig. 6 is a detail section taken on line (3-6-o;t' Fig: 5.

.As shown in the drawings:

The relerelicc numeral 1, indicates as a whole a talking or'sound reproducing machine having a rotatable table to receive a disk record 2, placed thereon for rotation thereby. A pivoted sounding arm 3, is mounted at one side of the machine 1, and has an extension l, connected thereinto'by a universal joint 5. lnsertml into the end of the extension arm 4, is a tubular elbow connection comprising a long tubular portion 6, engaged within the end of the er:-

detail section taken on line tension 4:, and communicating at right angles through a barrel or cylinder 7, rigidly associated therewith. Said barrel or cylindrical portion 7, is provided with. an end cap or cover 8, rigidly secured thereon in any suitable manner. Slidably inserted Within the barrel 7, is a cylindrical memher 9, having a peripheral shoulder or collar 10, which abuts against the open end of the barrel 7. Rigidly secured in the cap 8, of the barrel 7, is a guide screw 11, having a coiled compression spring 12, Wound thereabout and bearing upon the integral end 'Wall of the inner cylinder 9. The marginal edge of the open end of the barrel 7, is provided with two recesses or notches therein having the indicative numerals 1 and 52 marked adj acbnt thereto, and a pin 13,,projects from the exterior of the cylindrical' member 9, and is adapted to seat in one or the other of said recesses to hold said inner cylinder 9, in one or the other of the two possible positions by rotation within the barrel 9. A disk element 14, is provided having a tubular hub extension 15, adapted to fit over the open end of the cylindrical member 9, secured releasably thereto by a pin or screw 16. A sounding diaphragm 17 is mounted in said'disk 14, the assembly afl'ording a sound box, and is adapted to be set in vibration by a bell crank lever,

. one arm of which is denoted by the referonce numeral 18, and bears centrally upon said diaphragm, and the other arm of which is denoted by the reference numeral 19, and projects beneath and to one side ofsaid disk element 14. Said disk element 141-, is

provided with a pair of lug extensions 20, between and in which is journaled a pivot shaft 21, on which said bell crank 1819 is mounted.

A set screw 22, is provided in said bell crank 18--19, adapted to be tightened upon the pivot shaft 20, to hold said bell crank securely thereon. The arm 19, of said bell crank is provided with an aperture through the outer end thereof adapted to receive a needle or other tracing point or stylus 23, mounted securely therein to. track over the record.

As shown in Fig. 2, a see screw 24, is pro-- vided threaded into the arm 19, at the opposite edge to tighten against the stylus or needle to hold the same securely therein.

The operation is as follows:

The two possible adjustments of the tracing stylus with reference". to the arm at, are shown in Fig. 2, one position being shown in dotted lines and the other in full lines. Such adjustments are made by rotating the diaphragm head or disk member 14, such rotation being; permitted by pulling .out-

' /wa;rdly to one side of the-arm 4 to with:

draw the inner cylinder 9, against the drier presslon of lits spring 12, and then rotating varm contacting said diaphragm,

-and resilient inter-latching means ape-new said disk member together with said inner cylinder 9, until the pin 13, of said inner cylinder latches into one or the other of the notches 1 or 2, as the case may be.

With the stylus in one position of adjustment with reference to thetubular sounding arm 4., the tracing point is adapted to track upon one type of a playing record to repro-' duce sounds therefrom according to the sound wave impression thereon, and when in the other position of adjustment, is

adapted to track in another type of wave line impression of another record to i eproduce sound therefrom. -With the stylus adjusted to the full line position shown in Fig. 2, the same is susceptible of transverse vibrations as it tracks upon the face of the disk record, and when adjusted into the dotted line position shown, is susceptible to vertical vibrations caused by tracking'in a wave line impression of anothercharacter on another type of disk. The stylus by 'adjustment, is susceptible to both character of wave line impressions on difl'erent disk rec ords due to the ofi'set pivotal mounting of the needle carrying arm whereby the needle carrying arm may pivot upon its pivot shaft to transmit different kinds of vibrations according to its adjustment.

ll am aware that various details of construction may be varied through a wide range without departing from the principles of this invention and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention;

1. A. reproducer for phonograph machines capable of use on different types of disk records comprising a diaphragm carrying head, a vibratory arm pivoted thereon, a tracing stylus mounted in said arm, resiliently connected means permitting adjustment of said diaphragm head to change the angle of contact of said stylus with the playing record, and a pin and notch mechanism for retaining said diaphragm head in fixed adjusted positions.

2. Ina reproducer of the class described, a rotatable adjustable diaphragm head, means positively latching the same in difarm pivoted on said head, a diaphragm mounted on said head contacted by said am, and a tracing stylus mounted in said. arm adapted to be shifted on said head to different angular positions with reference to records played.

3. In a reproducer of the class described, a rotatable adjustable diaphragm head, a diaphragm mounted therein, a bell crank vibratory arm pivoted on said head with one a stylus mounted in the other arm of said bell crank,

said diaphragm head in difi'erent positions to latch of adjustment to vary the angle of contact of said stylus with a playing record.

4:. In a device of the class: described the combination with a tubular arm of a 0} lindrical extension thereon, a sound box comprising a diaphragm head a cylimlrical member associated therewith and intcrtitting with said cylindrical member on the arm, a spring coiled, within. said iuterlitting' cylindrical members to hold the same .resiliently associated with one another and permitting rotation or adjustn'ient thereof, and. a pin and latch mechanism between said cylindrical members to lock the sound box in ditl'erent adjusted positions with respect to said cylindrical member on said arm.

5. In a device of the class: described, a tubular arm, an integral cylindrical extension thereon, a sound box comprising a dia- 20 phragm head, a diaphragm mounted therein, a rc 'iroducimg needle connected with the diaphragm head and with the diaphragm to vibrate the same, a cylindrical member associated with the diaplnw-ig'm head and intorfitting with said cylindrical. extension, resil icnt means atlhriliiig connection between said rylir'nlrical member and said cylindrical extension permitting rotational adjustments of the diaphragm head, and. a pin and slot hitching means between said c 'lindrical member and said cylimlrical c? eusion to latch l-lit' diaphragm head-into different adjusted msitions.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

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Witnesses: v

thus. '1. Baron-an, l. V. Sonrssnnn.

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