US834326A - Gramophone. - Google Patents

Description

PATBNTED OUT. 30, 1906.

J; SANDERS. GRAMOPHONE.

APPLICATION FILED AUG.4,1905.

uvcnio'a ialvvrlrwwlllivl H UNITED Sl-ATEQ PATENT OFFICE.

vJOSEPH SANDERS, OF WASHINGTON, DISTRICT F COLUMBIA. GRAMOPHONE.

No. 834,326. s ecification of Letters Patent.

' Patented Oct. so, 1909/ Application tiled August 4,1906. Serial No. 272,787.

zen of the United States, and a resident of Washington, in the District of Columbia, have invented certain new and useful Im provements .in Gramophones, of which the oliowing is a specification.

This invention has reference to. improvements in gramophones of the type wherein a tapering amplifying horn or a section thereof is mounted to swingjover a record-tablet only i Is in a plane parallel carried 'by said tapering horn or horn-section a d have freedom of movement in-a plane at riggt angles to the plane of movement of the 1 horn.

The invention consists in providing. a quadrantal ,neck .for the sound-box, which neck is, pivotally yoked to the ta er section, so as to move in a curved pat past the smaller or free end of said hom-section to bring the stylus of the sound-box in en agement with a sound-record groove or to ring the sound-box over onto the horn-section in osition for the insertion or removal of a styus. To insure asound-proof joint between the quadrantal neck or sound-box carrier and the tapering horn-section, the meeting faces are curved on an arc the center of which is the pivot of the yoke joining the sound-box carrier to the horn-section. All this will a pear from the following detail description, in which reference is made to the accom anying drawings, forming-part of this speci cation, and in which Figure 1 is a side elevation of a portion of a taper horn-section and'the quadrantal'neck or sound-box carrier with .thes'ound-box and a disk record-tablet 'shown. in dotted lines. Fig. 2 is a plan view of the structure shown in Fig. 1 with the sound-box showninfull lines and. the record-disk omitted. Fig; 3 is a section. on the line no re ofFig. .L, and Fig. '4 is aone piece with the horn-section, but whichmay be soldered orlbrazed to it, and it is of larger outer diameter than the adjacent porthereto; and the object of 4 my invention is to produce a means for' mounting'the' sound-box whereby it may be axis of which is coincident with that of a bolt or ally through the taper arm a short distance back of its free end. The bore of the taper arm is continued through the head 3 and ter minutes-at the curved face 4 in a mouth 6, which flares attop and bottom, as shown in Fig. 4, for a purpose that will presentl appear. 7 of any approved type through the intermediary of a uadrantal hollow neck 8.

The neck 8 as one end 9 of such size as to fit into and carry the sound-box, and the other end 10 is ex anded to match insize the head 3. The end lO of the neck 8 is held in juxta osition to the head 3, so that its face' 11, which is curved on the same are as the face 4 of the said head 3, is in sliding contact, or nearly so, with the said face 4. This is done by means of two yoke-arms 1212, securely astened at one end to the end 10 of the neck 8, as by the screws 13, and at the other end journaled to the taper arm 1 by the boltor pin 5, being ivotallyconfined betweenthe heads of said bolt and felt or other non-resonant washers 14 interposed between the yoke-and the walls of the ta er arm. This construction perrr its the ho] ow t iereby) to be swung around the bolt '5 as a pivot through a curved path in a vertical rought into position to engage a recordgroove, (in which case the en 10 of the neck 8 covers the free endof the taper arm,) or the neck andsound-box m ay be swungnpward, over, and downward upon the top of the taper arm, as shown in dotted lines, Fig. 1, in which latter osition a worn style may be readily removed from the sound-box ora new style inserted,

The passage through .the hollow neck 8 may be substantially roundand of the same diameter as the lateral diameter of the mouth 'of the taper arm. It therefore "communicates with a part only of the mouth 6 in a vertical direction. This permits the neck to be moved-vertically over. the mouth of the taper arm for a limited distance without in any way restricting the free passage of the sound from the sound-box to the taper arm, and thereby provides for'the vertical movements of the sound-box due to mechanical pin 5, passing horizontally and'diametricplane, so that the sound-borstyle 15 may be 4 tion of'the taper arm. The, end face. 4 of this head is curvedoutwardly on an arc the 5 The taper arm 1 carries a'soun -box uadrantal neck (and. sound-box carried inaccuracies found in all recordsta'hlets and sound-reproducing machines, and also provides for the use of record-tablets of various thickness. I

In order to limit the downward movement of the neck and sound-box, a stop-pin 16 may be providedon the head 3 below and in the path of one of the yoke-arms 12.

In order to protect the taper arm from beto ing marred by the contact of the edge of the end of the neck 8, the said edge is slightly indented, as indicated at 17, Fig. 2.

Accuracy of it between the two faces 4 and 11 is not essential, since they may even is be separated sli htly without interfering ap preciably with t e transmission of the sound from the neck to the taper arm, and of course these two 'faces may be curved laterally as well as vertically. I

2;: Instead of using my invention in connection with a sound ampli ing horn of the taper arm type a strai ht ornnt ay be used, in which case it will 0 mounted to move across the record-tablet only in a plane parallel thereto.

Having described my invention, what I claim is 1. In a sound reproducing machine, the

combination with a tapering sound-amplifier 3o constrained tomove over a record-tabletin a plane arallel thereto and terminating at its smal er end in a. mouth in line with the bore of said amplifier, of a sound-box support carried by said'amplifier and movable across 3 5 the said mouth thereof into and out of com munication therewith, substantially as described.

2.111 a sound-reproducing,machine,, the combination with a tapering sound-am plifier 4o constrained to move over a record-tablet in a plane parallel thereto and terminating at its smaller end in a mouth in line with the bore of said amplifier, of a quadrantal neck, for an porting a sound-box, carried by said I ampli er and movable across the said mouth ceases into and out of communication therewith, substantially as described.

3. In a sound-reproducing machine the combination with a sound-amplifier having a flaring mouth at its smaller end, and a soundbox carrier movable across said flaring mouth in one plane only and having a sound-conveying passa e through it of less area than that of the aring mouth, substantially as described.

4. In a sound-reproducing machine, the combination with a sound-amplifier, of a sound-box carrier pivoted to the sound-amplifier and movable across the same in a curved path, the meeting faces of the carrier 6 and amplifier being curved on an arc'described about the axis of the carrier, substantially as described.

5. In a sound-reproducing machine, the combination with a sound amplifier formed with a curved end face, a sound-box carrier having a correspondingly-curved face, and yoke-arms fast to the sound-box carrier and pivotally connected to the amplifier, whereby 'the sound-box carrier is constrained to move in a curved path over the end face of the amplifier, substantially as described.

6. In a sound-reproducing machine the combination with atapering sound-amplifier movable one plane only over a sound-rec- 7.5 0rd, and having its-smaller end formed with a curved face and flaring mouth, of a soundbox carrier com'posedof a hollow, uadmntal neck having a curved face movab e over the curved face of the amplifier cont' one thereto, and yoke arms fast on the nec and pivotally connected to the amplifier, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. v

JOSEPH SANDERS. Witnesses:

ABRAHAM KAUFMAN, HELEN FRANZ.

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