US901781A - Talking-machine. - Google Patents

Description

W. A. CHAPMAN.

TALKING MAGHINE.

APPLIOATIOK FILED 00T. 9, 1907.

901,781 Patented ont'. 20, 1908.

A TTOHNE YS W. Al CHAPMAN.

TALKING MACHINE.

APPLIGATION rum 00T. 9, 1907.

Patented 0013.20, 1908.'

2 SHEETS-SHEET 2.

UNITED sTATEs PATENToFFICE.

WILLIAM ALBERT CHAPMAN, OF SMITHVILLE, ARKANSAS.

TALKING-MACHINE Sp eciicaton of Letters. Patent.

rcemeaoct. 2o, 190s.

Appnaacn mea ocwier 9, 1907. seria 110.396.566.

To allfwhdm it may concern:

Be it known that I, WILLIAM ALBERT CHAPMAN, a .citizenof the United States,

and a yresident ofSmithville, in the countyv, of Lawrence and State of Arkansas, have ing the sound tube so that the latter-is free p to swing 1n two directions, without Ainterrupting the propagation of the sound waves through the sound tube and the horn which communicates therewith. Y v

y A further object of the .inventionis to proi'ide a device of the class described in which the sound tube is mounted free to swing in two directions; that is, in a horizontal and a vertical an operative position, thereby avoiding the nnposlng of excessive weight upon the record through the sound box a'nd reproducer.

A still further object of the invention isn l. to provide a device of the cla-ss described, in

which the sound tube is connected'withthe horn by means of a perfectly fittingv joint which lpermits of the free relative movement of the sound tube and the horn, without interfering with the propagation of the sound waresv from one to the other, in which the sound tube is'mounted to swing with a minimum of friction, and in which means are provided for securely holding the sound tube in an inoperative position, away from the record.

The invention consists in the construction and combination of parts, to be`more fully described hereinafter' and particularly set forth in the claims.

Reference is to be had to the accompanying drawings formino` a part of this specification, in which simiar characters of reference indicate corresponding parts in all-'the views, and in which Figure l is a side elevation of a talking machine, showing my invention applie thereto; Fig. 2 is a rear elevation. of the talking machine, showing a. part of the horn broken' away. Fig. 3 is an enlarged longitudinal section of a part of the device, showlane, and in which. the sound tube is resiliently held, when in Fig. 4 is a transverse section on the line 4.-4 of Fig. 3'; Fig. 5 ris a transverse section through the sound tube near the end remote from the record; and Fig. 6 is a transverse section on the line 6 6 of Fig. 3. l

Before proceeding to a more detailed eX- planation of my invention, it should be understood that the same is particularly luseful with .talking machines employing' disk record-s, notwithstanding that it can also be/used with different types of devices of this character.4 i

Many of the details of construction can be altered without disturbing the underlying principle of the invention, which consists essentially in the manner of supporting the sound tube and the horn, the connection through which these communicate, and the manner of mounting the whole upon the' talking machine body. In talking 1nachines, the sound being reproduced is transmitted fromthe record through the sound box to the sound tube, the sound vibrations progressin through the sound tube to the horn whic conducts them to the outer air and the ears of thehearers. It is essential that the sound tube be freely movable, in order to permit the reproducer to follow the .indications upon the records when themachine is in operation. Furthermore, it must be possible to displace the entire tube to per- 'mit the records to be changed. In consequence, it is necessary to mount the sound tube in such a manner that it can move freely in at least two directions, without interrupting the internal communication be tween the sound tube and the horn. A exible connection can of course be established between thesetwo parts `by means, for in` stance, of rubber tubing or the like,but it 'has been found that material `of this nature serves to deaden the sound and is unserviceable for'other reasons. Consequently, the connection between the sound tube and the horn should consist of a rigid walled mem-v ber capable of conducting the sound waves freely. -I provide a connection which is so jointed vthat the internal connection between substantiall uninterrupted, while it in no way inter eres with sound propagation therethrough. Furthermore, the connection is substantially air-tight and thereby theadmission of sound waves or air currents from the outside is obviated. Unless the sound ing. the sound tube and horn connection; f

the sound tube and the horn is at all .times tube is suitably supported, much weight is carried by the needle or stylus of the reproducer when the latter restsv upon the record. For this reason I provide a reing the record in the usual manner.

silient support for the sound tube, which takes the greater partl of `the weight from the reproducing parts and thereby 'prevents unnecessary wear both ofthe latter and of the record.

Referring more particularly to the drawings, 1 represents the body of a talking machine of the disk record type, which has a revolving table 2 for carrying the record 3. The talking machine has suitable operating mechanism (not shown) for rotastandard 4, formed from suitable material such as cast iron, brass or the like, is mounted at the side of the talking machine body by means of laterally disposed flanges and screws or bolts 6." At the outer end, the

'standard has an upward, substantially vertically disposed post 7",.p rovided with a vgroove 8 at one side and, at the rear, with a back 9, for a purpose which will appear hereinafter. The back is preferably formed 'integral with the standard. The standard intermediate of the extremities has a laterally extended part 10, through which is formed a bore or opening 11, the longitudinal direction of which is substantially vertical and parallel to the post 7. Surrounding the opening 11, at the upper and lower ends of the same, the standard has integral annular cups or ball races 12, for apurpose which will appear hereinafter.

A cradle 13, formed from suitable material such as cast-iron, brass or the like, is mounted to swing upon the standard by means of an inte ral shaft or spindle 14 revolubly arrangec in the opening l1. The lower end of the spindle is threaded. An annular ball race 15 is arranged upon the spindle and rests against a set of ball bearings 16 located between the race 15 and the race 12. A. thunib-nut 17 mounted upon the threaded end of the spindle, serves to hold the latter in position within the opening, at the same time suitably supporting the lower ball bear ing. A ball race 18, is formed integral with the cradle at the end of the spindle adjacent to the same, and co-a'cts with the race 12 to form a ball bearing between the cradle and the standard, a set of balls 19 being provided for the purpose between the races.v In this way the cradle is revolubly or pivotally ar ranged upon the standard and is free to 'swing in a horizontal plane with a minimum integral'rib 22, extending laterally from theY elbow and pivotally mounted by means of a pin 2,3, between the upper ends of the forks.

l one side, the cradle 13 has a curved exjte'm -sion 24, .projecting toward the post 7 and provided with a' tonguel 25. The extension, as well as the tongueis curved in the-arc of a. circle having a radius equal to the distance between the extension and the pivotal point of the elbow. The adjacent wall of the elbow is similarly curved fand has flan es 26, which form a groove slidably engaging the tongue 25. The tongue and the groove hold the elbow securely against lateral displacement, while permitting it to swing freely about its pivotal point.

At the lower edge, the elbow is fashioned interiorly to form a shoulder 27. The sound tube 28, has the end remote from the sound box constricted to fit into the lower end of the elbow and to form a tight connection therewith, as is shown most clearly in Fig. 3. The sound tube 28 has the usual sound box 29, with a needle or stylus 30, adapted to engage the record 3 and reproduce the sounds which have been recorded upon the same. Opposite -to the extension 24 the cradle has an arm 31, at the end of which is slidably arranged a rod 32, mounted in a suitable opening of the arm. At the upper end the iod 32 has a head 33, provided with branching forks 34. The forks 34 are preferably covered with a cushion material sut-h as sleeves 35, of rubber, and which serve to support the sound tube. A helical spring 36, is arranged upon the pin 32 between the arm 31 and the head 33, and resiliently holds the same in a normal position, thereby resili- 100 ently supporting the sound tube. The lower end of the pin 32 is threaded and carries a thumb nut 37, by .means of which it is mounted in position. A spring catch 3S, having a finger 39'at the outer end, is rig- 105 idly mounted by means of a screw or rivet 40, upon the post 7. The elbow has a recess 41, adapted to co-act with the finger 39 to hold the elbow and the sound tube in an inoperative position. When the sound tube is 110 swung upwardly the elbow is pivoted between the forks 20, and the recess 41 comes f into engagement with the finger 39 of the. spring catch, and the latter then holds the parts in an inoperative position. When it is desired to lower the sound tube, it can be forced downward until the tension of the spring catch is overcome and the finger slips out of engagement with the recess. It will be understood that the latter is suitably 120 rounded to permit this operation.

An annular connection 42, is adjustably mountedupon the post 7 by means of a lateral extension 43, provided with a longitudinal recess 44, which is slidably engaged by the post. Aset screw 45 engages with the recess 8 of the post to hold the connection in position. The rear of the extension 43 seats against the back 9 of the post and assists in holding the connection in position. At -the .news1 lower edge the connection '42 -isl formed. into a rounded socket by a curved bevel 46 which conforms with-the correspondi gllformed upper edge 47 ofthe elbow 21; 'Iyh an the connection, form a pivotal Ajoint which permits the free movement v.of the elbow relative to the connection. Thus, when the sound tube and the elbow are swung in a 4horizontal plane, as the reproducer follows the indications'on the record, the contact betweenthe elbow and the connection is not interrupted, the curved4 edge of the elbow sliding freely -within the interiorly beveled lower edge of the connection. At the upper edge, the connection is reamed out to form a seat 48 for the end 49 of the phonograph horn 50. The latter `is rmly though removably mounted at the connection by means of ythe recessed seat,

Having thus described my "invention, I

. claimy as-new and desire to secure by Letters Iatent:-` 7

l. In a devlce of the classdescribed,V in combination, a standard, a cradle arranged toswing upon said standard, a sound tube movably mounted upon said` cradle and means carried by said cradle for supporting said sound tube, said cradle having a guideway, said sound tube having a part engaging slidably at said guideway.

2. In. a device of the class described, in combination, a standard,l a cradle arranged to swing upon said standard, a sound tube arranged to swing upon said cradle in a direction at an' anglewith the direction of swing ofvsaid cradle, and resilient means carried by said'cradle for` supportin said sound tube, said cradle havinga gui eway, said sound tube having'a part engaging slidably at said guideway.

3. In a device of the class described, in

. combination, a standard, a cradle arranged to swing upon said standard, a sound tube arranged to swing upon said cradle, an adjustable connection mounted upon -said standard and adapted to carry a horn, said connection communicating with said sound tube, and resilient means carried by said cradle for supporting said sound tube.

4. In a device of the class described, in

combination, a standard, a cradle pivotally mounted upon said standard, an elbow mounted t swing upon said cradle, a coni' nection movably engaging said elbow and communicating interiorly therewith, `said connection being adapted to su port a h orn, a sound tube secured to sai elbow, and

lresilient means carried by lsaid cradle for supporting said sound tube, said cradle having a guide tongue, said elbow having a guide groove engaging slidably at said tongue.

e elbow ing rsaid elbow in one position.V

combination, a4 standard, a cradle swiveledA nection adjustably carried by said v standard and movably engaging said' ,elbow and com- .70 municating interiorly therewith, ahorn carried .by said connection, a, sound tube se-v cured to said elbow`\,and, oonimunicating interiorly therewith, .dandresivlent means car. rifjd by said cradle :Eor. su`pporting said sound tu e. i

6. In a device of the class described, in combination, a standard, a cradle-pivotally mounted upon said standard and having a guideway, an elbow mounted to swing-upon said cradle and movably en aging said guideway, a connection movab y engaging said elbow and communicating"interiorly therewith, a horn carried by said connection, u sound tube secured to said elbow, resilient. means carried by said cradle for su portingl the said lsound tube, and a'catch gbr holdf ,-7. AIn a deviceof the class/described, in combination', a standard having a post, a connection adjustably mounted upon 'said post and adapted to supporta'horn, aV cradle arranged to swing upon sa1dstandard, an elbow arranged to swing upon said cradle in a direction at an angle to the direction of swing ofsaid cradle, said elbow and said connection communicating interiorly, a sound tube secured to said elbow and communicating interiorly therewith, and resilient. means carried by said cradle for supporting sald sound tube, said cradle having fa cui'ved guide tongue, said elbow having a. corre-` spondingly curved guide groove" slidably engaging said tongue. Y 8. In a device of the class described, in combination, a horn, a sound tube, a standard having a post presenting aflateral groove and flanges constituting a back, a connection slidably arranged upon said post, and means l for engaging said groove and serving to hold said connection in a plurality of positions, said connection being adapted to communicate withv said sound tubeandj to support said horn.

9. In a ldeviceof the class described, in 115 combination, a standard havin a ost presenting a lateral groove and a ac an annular connection having a recess slidably arranged upon'vs'aid post, means for engaging said groove and servin `to/hold said con-f nection in a plurality o positions, said coni" nection abutting against said-bacluaso tube, and ymeans for 'eil'ectin`l i communication between said a sound tube, lsaid connection to sup ort va horn. 1 1-nf L 10. n a deviceoftheclass upon said standard and havingiguidewa and forks, an elbow pivoted forks and'movably engaging said guideway, said guideway being curved in the arc of a4 circle having its center at the pivotal axis of said elbow, a sound tube communicating with said elbow, resilient means carried by said cradle for supporting said sound tube,

and a connection movably engaging said elbow and adapted to carry a horn. 11. In a device of the class described, 1n

combination, a standard having a post, an

annular connection adjustably mounted upon said post and presenting a horn seat, a horn mounted lat said horn seat, a cradle swiveled upon said standard and having a Vguideway and forks, an elbow -p'ivotally mounted between said forks and movably engaging said guideway, a catch carried by said post and serving to hold said elbow in one position, said elbow and said connection being adapted movably to engage, a sound tube secured to said elbow, and resilient means carried by said cradle for supporting said sound tube.

12. In a device of the class described, in

combination, a standard having an openin Jtherethrough and adjacent to the ends o --said openin roller bearing races, a: cradle having aspmdle revolubly arran ed in said opening andprovided with a .ro er bearingrace at theend of said spindle adjacent to said cradle, a roller bearing race arranged upon said spindle near the end remote from said cradle, an adjustable member to hold the said last-mentioned race in position, said adjustable member engaging said last-men tion'ed race, an elbow pivotally mounted.

T. L. NoRRIs, S. A. D. JONES.

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