US1438116A

US1438116A - Repeating attachment for disk-record phonographs

Info

Publication number: US1438116A
Application number: US544001A
Authority: US
Inventors: Stanley S Johns
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-03-15
Filing date: 1922-03-15
Publication date: 1922-12-05
Anticipated expiration: 1939-12-05

Description

s. s. JOHNS. REPEATTNG ATTACHMENT FOR DISK RECORD PHONOGRAPHS.

APPLICATION FILED MAR. 15. 1922.

Patented Dec. 5, 1922.

3 SFEETS-SHEET a Zjnwwbom Stanley 6. Johns,

351, WWW m S. SJOHNS.v REPEATI'NG ATTACHMENT FOR DISK RECORD FHONOGRAPHS.

APPLICATION FILED MAR. 15, I922. l,438,1 16.

Patented Dec. 5, 1922 3 SHEETS-SHEET 2- gri'uenfo c J StanleydJohns,

w-WM S. S. JOHNS.

REPEATING ATTACHMENT FOR DISKRECORD PHONOGRAPHS. APPLICATION FILED MAR. 15, 1922.

1,438, 1 1 6, Patented Dec. 5, 1922.

3 SHEETS-SHEET 3.

5 x x I I- i A x AIUIIIIHE win Stanley 6. Johns,

Patented Dec. 5, 1922.

meant..-

STANLEY s. JOHNS; or :eaLTrMonu, /ren ynnnnj I BEPEATING ATTACHMENT. non DISK-3ECQBD. Practical-terns.

Application matriarch 15, we. Serial no. 544,001.

To all whom it mag concern: I

I Be it known that I, STANLEY S. JoHNs, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have {invented certain new and useful Improvements in Repeating Attachments tor Disk- Record Phonograph's; and l dohereby declare the following to be afull, clear,.and, exact description of the invention, such as will enableothers skilledlin the art to wliich it appertains to make and use the sa-me.

repeating attachments for disk records on disk phonographs, such as the wellknown character. I I In the use of such instruments it is often desirable to provide an automatic repetition arrangement whereby the instrument may beoaused to play continuously, or as long as. the turn-table continues to revolve, without the necessity of moving the needlejbackby handwith thev consequent interruption inthe music. Such devices are. especially use ful' where these instruments are used to provlde muslc for danclng.

vVith such arrangements it is essential not only to provide quick and positive, means for returning theneedle to the initialor starting position; but it"is' also essential to protect the surface of thefdisk, against being scarred by the needleas the tone" arin is. automatically swung back to the initial position. It may limit of swing of the tone arm so that parts only of the record may be played if desired. It is also desirable to provide a positive lock for holding the stop bar in the'engagin'g 4.0 position, or outof the way in the disengaged posltion. part of ing. means of detaching device if desirable.

These and other features as will be hereinafter described are contained in-the-apparatus comprising my invention, which It is also desirable to "have no device touching record while playwill be more clearly understood after refer-I ence to the accompanying drawlngs m which like parts are indicated by similar reference symbols throughout the several views. I 1

Figure l'shows a plan view of the parts in the assembled relation, with the needle Victrola or other phonographs of similar 'elevation I I a I I Figure 6 shows a sectionIalong the line.

' and-the reesetting cam beingshownin plan.

It is also an advantage to have a qulck the operative position.

Figure 2 is an enlarged sideielevation of 1 :I

the reproducer 'and the parts carried thereby, including the needleand its attachments,

as'seenfrom'the left of Fig. 1, the needle being in the playingposition with regard tothe dislni Figure 3' is "a similar V ew to Fig; 2,.-but; I shows the needle out -otenga'gement with I My invention relates to improvements in position:

Figure 4 is'a plan view, partlyin' section along thebroken. line 4 4, ofthe apparatus shown in} .Fig. 2..

restoring the tone arm to-tlie 'ini ti aI Figure 5 shows a verticalsection along'fthe.

line5+5 of 2, and looking in' the direc-1 tion of the arrows,'1parts ibei'ngf shown. in I 6 .6 of 2, there-settingcam and diagonal roller being shown in plan, and the p e: h ve n f erl ale than n Fig.2. '.'f. r r

. Figure. 7 shows a sectionfalong the linev 7 of Fig. 3,-andflooking down, the parts being shown ona largerscale than 111mg.

' Figuredisa detailview,lon a' larger scale, of'the pivotend of the stop. bar

Figure 9 shows a section along.

tion of the arrows. I I I I Figure 10 shows a inodified'forn of attachment for use with the operating cam, the- I I the broken line 9 -901? Fig. 8, and looking in'the direcbe also desirable to adjust the same showing asection along the line l 0-.--1O

of Fig. 11.

lF ligure Fig. lOias seen from the left of said figure.

llrepresents' the device shown in I Figure 12 .is a detail perspective view of theclamping ring showninFigs'. l0 and 11 V and;

Figure 13 isan enlargedsectional '"eieva;

tion'of the friction bearing for the tripping lever. A r I videdwith the flat top A' abov'e whioh' top is mounted the turn-table B provided with the pin 22,011 which turn-table the record disk C is mounted in the/usual way.

D represents thetone arm which is piv- I Arepresents thecaloinet' which may beofany suitable form and construction,'and prooted to the cabinet in the usual way, as at (Z, and carries the usual gooseneck D, with the reproducer E, to which the needle F is connected in the usual way. As will be hereinafter described the automatic attachment may be readily adjusted to operate, irrespective'of the length of the needle. Needles vary more or less in length, and in an at tachment of this kind it sider this fact.

The parts hereinbefore described are all well known in the art, and not being'a part of my present invention will not be further described herein.

My invention more particularly relates to the means for lifting the needle from the rec 0rd and for automatically restoring the reproducer and needle to the initial position,

and also for limiting the swing of the tone arm; and the details of this invention will now be described.

Attached to the back of the reproducer E is the usual block G, preferably of rubber or nonresonant material, and this block is at tached to the reproducer in any convenient way, as by the screw 9.

The screw H, shown in detail in Fig. 4L, passes through theflplate I fast to the block G, which plate is provided with the stop arm I, see Figs. 2, 3 and 5. The screw H is preferably provided with an annular flange h, with a reduced portion it, on which reduced portionfthe arm K is pivoted. The said arm is held in engagement with the stop arm I by means of the weak spring L.

The purpose of this spring is to permit the flexibility of the parts and to hold the arm K in engagement with the stop arm I, when height of cam is not being adjusted. This arm' K is'provided with a socket is through which passes the standard M to which theresetting cam N is journaled, as will be hereinafter described.

The standard M may be adjusted at the desired position in the socket is by means of the clamp screw see Figs. 2, 3 and 4:, and thus the height of the cam relative to the length of stylus may be adjusted. The standard M. is made angular in shape, preferably rectangular, so as not to turn in its socket, and extending laterally from this standard is a horizontal arm a (see Fig. 6) which serves as an axle on which the cam N is free to rotate. The outer surface of this cam is covered with a layer of rubber, leather, or similar material at, and one side of the cam is flattened, as at n, so as to be clear of the disk when the needle is in the playing position. This yielding material serves as the actuating face of the cam.

Set diagonally across the face of this cam, and removed from the flattened portion a", is the diagonal. roller 1 mounted on the diagonal shaft 2? connecting the two side plates 12 of the cam N, as shown most is necessary to conclearly in Fig. 6. The rotary cam is preferably weighted on the side opposite the flattened face it, so that there will be a tendency of the cam to fall down by gravity from the disengaged position shown in Figs. 2 and 5 to the engaging position shown in Fig. 3. The cam is normally held in the position of unstable equilibrium, shown in Fig. 2, by means of the lug n engaging the arm (1 of the tripping lever Q, which is held by frictional engagement in any desired position by means of a screw Q having a cup-shaped head 9 enclosing the spring (1, see Figs. 2, 3 and 13.

This lever Q; may be provided with an upwardly projecting flange 9 which serves to stiffen. same, and also to limit the side motion of said lever, as shown in Figs. 6 and 7. The lever Q is also provided with a tripping arm Q3 adapted to strike one or the other stops on the stop bar R, which carries the two adjustable stop arms S and S, each" of which maybe clamped in place on the bar R by means of the clamp screws 8 and s, respectively. These arms 55 and S project down into the path of the tripping arm (1 in the operation of the instrument, and may be provided with bearings of rubber or other suitable material to prevent clicking.

The bar R is preferably curved when in the engaging position, as shown in Fig. 1 with the same center as the tone arm. The bar is held in either the engaging position shown in F ig. 1, or in the disengaged position clear of the disk by a special locking arrangement which is shown in detail in Figs. 8 and 9, in which T represents a tubular casing projecting up from the top A of the cabinet, in which casing is enclosed a pivot pin U surrounded by a coil spring V. This pin U isfastto the socket l3, secured to the end of the bar R, and the spring V normally tends to press said pin down, as shown in Fig. 9, causing one or the other of the notches 1' and a", see Fig. 8, to engage the pin t projecting outwardly from the casing T.

When the notch. 1" engages the pin 25:, the bar R will. be looked over the disk in the position shown in Fig. 1, but when the bar R is swung outwards until the notch 1" en gages the pin t,the said bar will be entirely clear of the disk and the disk may be removed and new disks applied without being inconvenienced by the position of said bar.

By this spring lock arrangement just re I justably held;

S and in Figs. 2 and?) This collar alsohas a lug 50 holding the" horizontal pin Y which serves as a pivot for the arm The cam N and other parts carried by the standard are similar to those already described with reference "to Figs. 1 to9. The mode of connecting the attachment by means of a collar clamped in the gooseneck facilitates the addition of the attachmentto various types of talking machines.

The operation of the device is as follows Place the needle or stylus in holder provided in the usual way. Turn cam in position of Fig. 2, tripping arm a to left. Place stylus on record and unscrew knurled screw Kwhich clamps standard M in arm K. This will allow both cam and stylus to touch record: with fingers on screw K, press down arm K compressing spring L until motion is stopped by head of screw z coming in contact with plate I and release spring L, which will now lift arm K carrying standard M to position shown in Fig. 2, allowing sufficient clearance between cam N and record to avoid rubbing.

The cam being .in the inoperative position shown in Figs. 1, 2 and 6, and being held in this position by the engagement of the lug with the arm g of the lever Q, and the stop bar B, being thrown to the position shown in Fig. 1, and the stop arms S being adjusted to the proper position by means of the corresponding clamp screws, start the instrument to playing. As the tone arm swings towards the pivot of the disk, the tripping lever Q, will ulti mately strike the inner stop arm S, releasmg the arm g'of the lever Q from engagement with the lug n" of the cam N, and the cam being in unstable equilibrium will swing from the position shown in Fig. 2 towards the position shown in Fig. 3, so, that the soft engaging face of the cam will engage the top of the disk and the diagonal roller P will bear on the upper surface of the disk.

The partial revolution of the cam to the engaging position will cause the lug n to engage the arm of the lever Qasshown inFlg. 7, andthus the cam can rotate no further until this lever is released; the parts then being in the position shown in Fig. 7. When in this position the diagonal roller P will quickly swing. the tone arm back towards the initial position until the arm of the lever Q; strikes the stop arm S, and the cam will be released and the continued K, in which the standard'M is'ad-l i i i the disk, by

needle'with the record, and in theother diztighten screw K' ticularly pointed out in the claims.

movement'of ithe disk will speedily restoreq the to [the initial position shown; in

Figure 2. i i ,1

Incident to thisloperation, the lowering of the cam will "lift the reproducerso 'to clear the needle' from-the diskl,'andwhe'n the cam, is thrown outfof engagement the needle willbe'gently restored toengagement with 1 z "thefeccentric motion of cam in revolving in contact with disk. It will b'e noted that during the backward movement" of the 'tone' arm the'needle will be? kept.

entirely clear of the disk,'and will only 'eni gage the diskwhen the-cam is in the inopera' tiveposition. Byadjusting the position of the stop arms S and S the angular swing of the tone arm may be var ed within limits, I and'recordsofdifferent width, or" desired-f partsgthereof, ma b played Over a Over again at will, H

, It will be obvious that the swing 'o'f the tone arm in'one direction will be auto-- matically caused by the engagement of the rection'by the engagement of the diagonal rollerwith thes'urface of the disk.

It will also be obvious-that this recipr'o-. I

eating swinging movement of the tone arm will continue indefinitely as long, as, the: turn-table is continued. in rotation.

When it is desired to cease the repetition action referred to, th'row out the stop'bar to the disengaging positionand it will be held locked in that position until ready for use. While in this position the instrument may .be used in the ordinary way and the disk'records may be applied or removed without there being any inconvenience whatever occasioned by the repetition at-- tach'ment thereinbefore described The standard ll/I may be moved upon down in its socket and clamped at the C187 sired position to compensate for changes in the length of the needle. Where thelength of the needle varies it will be'ordinarily necessary to adjust the attachment accord ing to the length of the needle used.

it will be obvious portions ofthe cam and of the diagonal roller'may be varied,"- and various other de-' manyrespects; and I do not mean to limit the invention'to such details exceptas par- I claim as my invention m; i I

that the relative pr-0Q "me .1. Ina repeatlng mechanism for talking machines a return roller'attachment carried a by the sound producing means, comprising an eccentric roller provided on its periphery with a diagonally disposed, rotatable element adapted to engage the face of a record.

2. In a disk record phonograph provided with a rotary turntable, adapted to support a record disk, a laterally swinging tone arm, a reproducer swiveled to free end'of 11 tails of the apparatus m ght be changed 1n 5 angle to and having the outer engagingsurface projecting beyond the edge or" said cam,

' and means for tripping said cam and cansing it to engage the disk.

paratus A stop arrangement for use in apof the character described, comprising a fixed tubular socket, a'pin projecting from said socket a tubular cap revolubly mounted thereon provided With holding notches therein, adapted to engage said pin, ascrew bolt secured to said cap and projecting axially into said socket, so as to permit a rotary movement of said cap relative to said socket, and also a short axial movement of said cap relative to said laterally from said cap and a stop armmounted on said curved arm.

4. In a disk record phonograph having areproducer and a stylus therefor, in combination, a standard connected to said res producer, a cam pivoted to said standard, a roller journaled at an angle to and pro jecting beyond the edge of said cam, and automatic means for causing said cam and said roller to successively engage the surface of the rotating disk and first lift said stylus then return said reproducer, and

finally restore said parts to initial position] 1 i STANLEY S. JOHNS.