US1489487A - Nonset stop for talking machines - Google Patents

Description

April 8 1924. 1,489,487

F. H. DOERR NONSET' STDP FOR TALKING MACHINES Filed DeC- 10 19214 3 Sheets-Sheet 5 Patented Apr. 8, 1924.

UNITED STATES ENT OFF ICE.

Tann H. Donna, or GRAND RAPIDS, MICHIGAN, nssIG'Non To CHENEY TALKING MACHINE COMPANY, orV CHICAGO, ILLINOIS,

.A CORPORATION or ILLINOIS.

NoNsET sTor ro-R'TALKING Application led Deceniber 10, 19211 'SeralNOi 521,286.

To all whom t may Concern.'

Be it known that I, FRED H. D OERR, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Nonset Stops for Talking Machines, of which the following is a specification.

This invention relates to anew and im?` proved non-set stop for sound producing machines and more particularly to a device of this character. adapted for use in con`- nection with disk talking machines.

As is well known in the art, it Vis'highly desirable to provide means .for automatically stopping the rotation of the turn-table of such machines when the stylus and sound box reach the endof the record. Inf general, such records comprise la spiral groove, the groove being so modified as to produce the sound vibrations in the stylus and the groove ending at the end of the sound record. The stylus and consequently the tone arm :are moved laterally by means of the coaction of the stylus with the groove. At the end of the groove, the stylus ceases to -advancelbut continues to trace .av circular path upon the record if the latter continues to revolve; AThe rotation of the turn-table should be stopped when the stylus reaches this point.

It is an object of the present invention to provide means cooperating with the turntable and tone arm of a talking machinein such manner that, the rotation of the turn` table is stopped when the tonearm ceases to move laterally relative to the turn-tablef'l It is an additional object to provide means of this Vcharacter which stop ,the movement of the turn-table only whenthe tone-arm is in certain predetermined portions of its range of movement. i It is a further object to-provide a device of this character whichis simple in design and constructionand positive inf operation. vOther andfurther vobjects will appear as the description proceeds. Y Y. Broadly, my invention comprises means associated with the turn-table and turn-table brake of a talking machine adapted to set the brake, the means 'being controlled by the' location and movement ofthe tone arm'. More particularly the device comprises brake releasing means'associated with the brake, this meansbeing so connected with the tene arm that inward movement ofthe l tone arm vtends to move the brake releasing means to inoperative position. Means are further lprovided for periodically returning the brake releasing meansv to operative posi- -tion and the device also comprises `moving means, the path of movement of which intersects: theoperative position of the brake releasing means.

In the preferred form, this last-named moving means is provided with `a control operated by the tone arm to vary `its path of movement so that in certain positions of the tone arm, its Vpath does not intersect the operative positions of the brake releasing means. Y

I havev illustratedv a preferred embodiment ofmy invention inthe accompanying drawings, in'which: *Figure 1 is a plan view of a phonograph showing my invention applied thereto, the turn-table being partly broken away to more clearly' show the working parts' ofthe device, the partsbeing shown in the braking position; Figure 2`is a fragmentary section taken on line2-2 of Figure l; Y' Figure 3 is a'plan view with the turn-table removed Showing theV parts in the non-braking position;

Figure 4' is a Vsection taken on line L1--4 ofFigu1e1g* `f Y Y Figure 5 is a section takenk on 'line-5-5 of Figure 1 and Figure 6 is a fragmentary elevation showing the frictionconnection'element.

Referringnow to the drawings, and in particular tofFigure l,therecord 8 is supported, upon the turn-table 9 and the latter is carriedby/thevertical spindle 10. The tonearm 11 is pivoted to the cabinet top 12Y through'the collar 13. The connecting lug 14 Visrigidly securedto the tone arm 11 and rotatestherewith. yThe ope-rating link 15 is ipivotall'yconnected tothe lug 14 at point 16 and' has its oppositeendfpivotally con-` nectedl at 17 to the friction arm 1 8.- This arm 1 8 is pivoted to stud 19 which latter is secured tothe plate 20. `The lever 2 1 is also pivoted upon the stud 19 and, asbest shown Vin Figure 6, the arm' 18 and lever 21 are Imaintained in fricti-onal Contact by the 'spring clip 22. I

'-The outer reduced end' 23 of the lever 21 lits through a slot 24' in the brake re'- leasing lever`25` Thelever 25 is pivotally connected at 26 tothe lever 25 which is pivoted to the bed plate 26 at point 27. The other end of the lever 25 lits between the bifuroated portion 28 of the brake latch 29. This latch is provided with the finger 30 adapted to engage the detent 31 carried by the brake lever 32. The brake lever 32 is connected to the lever 25 b means of a spring 33, and is provided with the operating handle 34 and the brake pad 35.

The guide link 36 is pivotally connected at 37 to the link 15 and is provided upon its opposite ends with vadownwardly depending linger 38 iitting into a slot 39 in the plate 20. The link 36 is provided with a guide slot 40 having an oli'set portion 4l, the purpose of which will be described hereafter. j The cross link 42 has a pin'43 traveling in the guide slot 40 of the guide link 36." The opposite end of the. cross link 42 is pivotally connected at 44 to Ythe push -rod 45. The inner end of the push rod 45 is eccentrieally connected at 46 to the rotating cam 47. This cam 47 is carried'upon the upper end of a shaft, the lower portion of which is rigidly connected to the `gea-r wheel 48. This gear wheel 48 is in mesh with the pinion 49 carried upon the turn-table spindle 10. The rock lever 50 is pivoted upon the stud 19, its inner endbeing Aadapted to engage the cam disk 47 to be thrust laterally about high point 51 on that disk. The

opposite arm 52 of the rock lever'hasan'upset portion 53 adapted tof engage the `lever 21. The lever 25 lits within an upturned guideway 54 formed upon the plateY 20. As best shown in Figure 3, the push vrod 45 is provided with an angular face 55 which is adapted to engage the upturned end 56 of the lever 25, whichV action will bemore fully described hereafter. Y

The tone arm 11is provided, kas shown, with a usual type of sound boX57, this being shown in Figure 3 as resting upon a member 58 located at one side of the turntable.

1n the operation of the device with the tone arm in the position shown in Figure 3, in order to start the turn-table the hand lever 34 is moved to the left to the position shown' in Figure 3, this movement serving to release the brake. The brake mechanism itself is no part of the present invention and need not here be discussed in detail.

1t will be obvious from an examination of Figure 3 where the brake is off and Figure 1 where the brake is on, that when the handle 34 is moved to the left, the spring 33 pulls upon the arm of the Alever 25 to which it is attached, and thispull is transmitted to linger 30 of the lever 29 so that" as soon as thisfinger clears the detent 31, it swings inwardly and engages'the Jface of the detent. This swinging movement of the lever 34 serves to move the brake pad 35 v out of contact with the turn-table and the latter proceeds to revolve under the influence of the power applied by any suitable mechanism (not shown) through the turn-table spindle 10.

As the sp-indle 10 revolves, the pinion 49 causes the gear wheel 48 to revolve and the latter revolves the cam disk 47. Due to its eccentric connection to the cam disk 47, the push rod 45 reciprocates, being guided in its motion by the cross link 42. With the parts as shown in Figure 3, the cam surface 55 at the end of the push rod 45 will engage the end 56 Voi" the lever 25 at the outward Yextreme of the `reciprocation of the push rod. The thrust upon the lever 25 will move this" leverand it will inA turn rock the lever v25 about its pivot and this rocking motion transmitted to the lever 29 will move the linger 30 out of engagement with the detent 31 and the spring 33 will again swing the lever 32 about its pivot to bring the brake pad 35 into engagement with the turn-table.

"However, if the tone arm 11 be swung.

inwardly after the turn-table is set in motion and the sound box be brought above the outer portion of the sound producingk eurveupon the record, this motion of .the sound armV will be transmitted by thelug 14 to the link 15. The motion of the link 15 will serve tov-move the guide link 36 and the movement of this link is guided by its finger 38 which lfinger coacts with the guide slot `39 in the plate 20. `When the tone arm has reached such'a position that the needle is located above' the outer portion of the record groove, the guide link 36 will have moved to such an extent that the guide stud 43, carried by the cross link 42, will be locatedA inthe offset portion 41 of the guide slot 40. This offset portion serves by means of the link 42 to swing the push rodlaterally about its pivot. The link .then so guides the reciprocatory movement of the push rod that the path no longer intersects the Ypath of the lever 25. .Thus when the tone arm is within the range of movement which corresponds to the inter-relation of the odset portion 41 with the stud 43, the push'rod 45cannot operate the stop.V In general, this range of movement of the tone arm will correspond to a distance extending from slightly o-utside the beginningof the record groove upon records of the largest dimension to a point somewhat outside that at which the record groove ceases upon the shortest records.A Within this range, the non-set stop willbe. inoperative and this is highlydesirable in order that the stop may not be unintentionally put into operation inthe process of placing the stylus into engagement withthe record groove.

When the tone arm is swung inwardly to CII such an extent that the'.V reaches the c end of the record groove, the k'stud 43 engages the upper straight portion of the guide groove 40 and the push rod 45 is again swung to the left so that its path of movement again intersects that of the lever 25. As the tone arm is swung inwardly, through the medium of the link 1-5, the friction arm 18 is rotated aboutthe pivot 19 in the counterclockwse direction.

Through its frictional engagement with the lever 21, that lever is yieldingly rotated in the counterclockwise direction about the same pivot. The lever 25 is freely lmovable about its pivot 26 andV as the lever21v moves to the. left, as seen in Figure 1,engage ment of the ends 23 of this lever with slot 24 in lever 25, serves to swing the lever 25 to the left or in the clockwise direction about its pivot. This movement of the lever is limited by the stop 54. The move-- ment is sufficient, however, to so carry the end 56 of the lever to the left as to take it out ofthe path of they push rod 45. Thus, with the lever 25Y swung to the left, the push rod 45 cannot operate the lever to release the brake. y The high point 51 of the cam disk 47 engages the `end of the lever 50 once in each revolution of the cam-and swingsthat lever in the clockwise direction about its pivot. As this lever swings, the upwardly extending portion 53 upon its arm 52 engages the lever 21 and swings this last-named lever to the right, that is, in the clockwise-direction and in the direction opposite to that which it is .carried by its frictional engagement with the frictional arm 18. As the lever 21 swings to the right, it correspondingly swings the lever 25 to the right and again swings its end v56 into the path of movement of the push rod. v

Thus as the tone arm gradually moves inwardly under theinfluence ofA theV spiral groove, the lever 25 is periodically moved out of the path of the push rod by the frictional connection ofv the lever to thetone arm, and it is periodically moved back-,into the path of the push rodrby the action of the cam. It will be apparent that if the frictional action ceases to operate upon the lever due to the tone arm ceasing to move laterally, the lever will remain in the path of the push rod and the latter will engage it and put on thel brake. The brake will thus automatically be vput on when the stylus reaches the end of the record groove.

It is to be understood that the high point 51 of the cam disk is so timed in regard to the reciprocatory movement of the push rod 45 that there will Vbe ample time between the movement of the-lever 25 into the operative position and the outward movement of the push rod for the frictional connection to again remove the lever from the path of the plush' rod before' thepush rod reacliesftheff although it progresses inwardly, has a back Y and forth movement under the influence of theeccentricity of the groove. Thus, if the stop operated in less period` than one full revolution, it might be operated by,` the n outward movement of the toneV arm undery the influence of the eccentricity.A Yhe're this .operation extends one or more full .revolutions, the eccentricity lis compensated forin that the friction connection between the arm 18V and lever 21, serVestomove 4the" lever 21- sus in both directions with the tone arm.

It willV be noted that when' the brakeislv put on and the turn-tablebrought to a stop;

with the sound box at the inner endof the groove, the face 5,5 vof the push rodl will be in engagement with the end 56 of lever25. As the tone arm is swung to the position in which it is shownV in Figure 1, thepush rod will be pulled to the right as therstud 443 passes through the offset portion 41 of the guide slot 40. n

There is a certain amount of give in the lever 25 and its supporting partsfand' it willl be thrust slightly longitudinally during this swinging movement by the Apush rodl by the angular face 55 on the end of the push rod. As the push rod is again pushed to the left, when the stud 43 reaches k,the upper portion of the guide slot, the face 55 does not again? slip in contact with the face 56 but the point of the face 55 engages the edge ofthe face 56 and thrusts the leverv25 to the left'. 'Y n This is Vajdesirable feature in that"v if the push rod were' held positively in engagement with the lever 25, it would be impossible for the latch to engage' and retain the brake in the unlocked position whenragain starting the turn-table. This'is true since the linger 30 cannot swing to engage the detent without the inter-engagement of the levers thrusting 'the lever 25 downwardly and the latterfwouldbe prevented by the push rod. I

latched in the ofl'1 position by the-force supplied through the ,spring '33. `When ,thus latched, thehand lever may befreleased. My device which has been fully described',

operates to automatically apply the brake to the turn-table when the tone arm ceases to travel inwardly at the end of the record groove. It also automatically stops the turn table when the tone arm is swung outwardly and brought to the position oi rest between operations ot the machine. it is, however, so constructed that the brake cannot be un intentionally applied when the tone arm is moved through the range necessary for the application oi the needle to the record groove in starting to play a record. The device is simple in design and positive in operation. lt may be applied as shown under the record table without disiignring the machine or causing any material modiiication in existing design or construction.

I am aware that many'inodiiications of my construction may be made tor the pur- -pose or" adapitng it to varyinguses and it is my intention to cover all such modiiications coming within the spirit and scope of the appended claims.

l" claim:

l. In combination with a rotating element and an element swinging relative to said rotating element, stopping mechanism adapted to stop said rotating element, operating means associated with said stopping mechanism, said means being so associated with the swinging element that movement of the latter in one direction tends to move the operating means to inoperative position, means periodically returning the operating means to operative position, and reciprocatory means, the path of movement of which intersects the operative position of the stopping mechanism operating means.

2. ln combination with a rotating element andv an element swinging relative to said rotating element, a brake for said rotating element, brake releasing means associated with the brake, said means being so associated with the swinging element that movement ot the latter in one direction tends to move the brake releasing means to inoperative position, means periodically returning the brake releasing means to opera* tive position, and reciprocatory means, the path of movement of which intersects the operative position of the brake releasing means.

3. ln combination with a rotating element and an element swinging relative to said rotating element, a brake for said rotating element, brake releasing means associated with the brake, said means being so associated with the swinging element that movement ot the latter in one direction tends to move the brake releasing means to inoperative position, means periodically returning the brake releasing means to operative position, moving means, the path of movement ot which intersects the operative position ot the brake releasing means, and

inoperative position, means periodically re-A turning the brake releasing means to operative position, moving means, the path of 'movement of which intersects the operative position or` the brake releasing means, and control means cooperating with the moving means to vary its path of movement, said path being so varied ythat it `fails to intelv sect the operative position of the brake releasing means when the swinging element is in a predetermined position.

5. ln combination with a rotating element and an element swinging relativevto said rotating element, a brake for said rotating element, brake releasing means associated with the brake, said means being Yso associated with the swinging element that movement ,of the latter in one direction tends to move the brake releasing means Yto inoperative position, means periodically re.

turning the brake releasing means to operative position, moving means, the path of movement of which intersects the Operative position of the brake yreleasing means, and control means cooperating with the moving means to vary its path of movement, said path being so varied that it fails to inter-y sect the operative position of the brake releasing means when the swinging element is in a predetermined range of intermediate positions.

6. In combination with a rotating element and an element swinging relative to said rotating element, a lbrake for said rotating element, brake releasing means associated with the bralre, said means being so associated vwith the swinging element that movement of the latter in one direction tends to move the brake releasing means to inoperative position, means periodically returning the brake releasing means to operative position, movingmeans, the path of movementy of which intersects the operative posit-ion of the brake releasing means, and control means operated by the swinging element cooperating with the moving means to vary its path oit movement.

7. ln combination with the turn-table and tone arm ot a sound reproducing machine, al

brake for said turnetable. brake releasing means associated with the brake, said means being so associated with the tone arm that inward movement of the latter tends to move the brake releasing ,means to inopera tive position, means periodically returning releasing means.

the brake releasingmeans to operative posit-ion, and a push rod, the path Yof movement of which intersects the operative posi- -means associated withthe brake, said means being so associatedy with the tone arm that inward movement ofthe latter tends to move the brake releasing means to inoperativeV position, means periodically returning` the brake releasing means to' operative position, and a push rod having means giving it a rreciprocatory path ofi-movement which intersects vthe operative positionVV of the Vbrake 9. In combination with a turn-table Aand tone arm of a sound reproducing machine, a brake for said turn-table,brake releasing means associated with the "brake, said means being so associated with the tonearm that inwardmovement o' the Llatter tends to move the brake releasing means to inoperative position, Vmeans periodically returning the brake releasing means to 'operative' position, and a pus'hrod, the path of movement of which intersects the. operative position of the brake releasing means, and a" link connected `toqthe push rod to vary its path of movement.

10. In combination with the turn-table and tone arm of a sound reproducing machine, a brake for said turn-table, brake releasing means associated with the brake, said means being so associated with the tone arm that inward movement of the latter tends to move the brake releasing means to inoperative position, means periodically returning the brake releasing means to operative position, and a push rod, the path of movement of which intersects the operative position of the brake releasing means, and a link connected to the push rod to vary its path of movement, said path being so varied that it fails to intersect the operative position of the brake releasing means when the tone l arm is in a predetermined position.

11. In combination with the turn-table Yand tone arm of a sound reproducing machine, a brake for said turn-table, brake releasing means associated with the brake, said means being so associated with the tone arm that inward movement of the latter tends to move the brake releasing means to inoperative position, means periodically returning the brake releasing means to operative position, and a push rod, the path of movement of which intersects the operative position of the brake releasing means, and a link connected to the push rod to vary its path of movement, said path being s'o varied that it fails to intersect the operative position of the brake releasing means when the tone arm is in a predetermined range of positions intermediate its path 'of swinging movement. 'Y' 12. In combination with Ythe turn-'table `and tone arm of a-sound reproducingmachine, a brake for said turn-table, .brakeV releasing means associated with the brake,

said means being soi associated with theY tone arm. that inward movement of 'the latter tends to move Lthe brake releasing means to inoperative position, means periodically returning the brake releasing means to operative position, anda push rod, the

path vof movement of which intersects the operative position of the brake releasing means, and ajlinkwoperated by movement' of the toney arm and connectedto the push rod to vary its path of movement. L Y

1S. Incoinbination with the .turn-table and tone arm-of a sound reproducing lmament of which'intersectsa position yof :the Y es lever, a second swinging lever i'rictionallyv connected to the` tonearm in such manner as `to swing therewith, said second lever coacting with the brake releasing lever to.

swing the latter out of operative position, a rocking lever periodically returning Vthe brake releasing lever to operative position, and a push rod, the pathk ofpmovement of which. intersects the operative position of Y the brake releasing lever. Y 15. InA combination with the turn-table and tone arm of a sound reproducing machine, a brake for said turn-table, brakeV releasing means comprising a Vswinging lever,

a second swinging lever frictionally connectz l ed to the tone arm in ysuch. manner as to swing therewith, said second lever coacting with theV brakel releasing lever to swing the latter out of operative position, a rocking -lever periodically returning the brake releasing lever to operative position, and a .push rod, the path of movement of which intersects the operative position ofthe brake releasing lever, and a link connected to the push rod and operated by the tone arm toV 125 so vary the path of movement that the push rod fails to intersect the path of movement of the brake releasing lever when the tone arm is placed adjacent the outer edge of the 'Y turn-table. Y

16. In combination with Ythe turn-table and tone arm of a sound reproducing machine, a brake for said turn-table, brake releasing means comprising a swinging lever, a second swinging lever frictionally connected to the tone arm in such manner as to swing therewith, said second lever coacting with the brake releasing lever to swing the latter out of operative position, a rocking lever periodically returning the brake releasing lever to operative posi-tion, anda push rodthe path of movement of which intersects the operative position of the brake releasing lever, and a link connected to the push rod and operated bythe tone arm to so vary the path of movement that the push rod 'fails to intersect the path of movement of the brake releasing lever' when the tone arm is placed adjacent the outer edge of the turn-table and intersects the path of movement when the tone arm vis located outwardly of such position and inwardly of such position.

17. In combination with the turntable and tone arm` of a sound reproducing machine, a brake for said turn-table, brake releasing means comprisingv a swinging lever, a push rod, Ithe path of movement of which intersects the path of movement of the brake releasing lever, said push rod being adapted to thrust the lever longitudinal-y ly to release the brake.

18. In combination with the turn-table and tone arm of a sound reproducing machine, a brake for said turn-table, brake releasing means* comprisng a swinging lever, a push rod, the path of movement of which intersects the path of movement of the brake releasing lever, said ypush rod being adapted to thrust the lever longitudinally to release the brake, and means connected to the push rod and opera-ted by lateral movement of the tone arm adapted to move the push rod out of engagement with the release lever.

19. In combination with the turn-table and tone arm of asound reproducing Kniachine, a brake for said turn-table, brake releasing means comprising a swinging lever,- a push rod, the lpath of' movement of which t intersects the path of movement of the brake releasing lever, .said push rod being adapted to thrust the lever longitudinally to release' the brake, and meansy connected to the push rod and operated by outward lateral movement of the tone arm adapted to move the .push rod out of engagement with the release leven-subsequent inward movement of` the tone arm servingiyto brinof the push rod laterally against the release ever.

Signed atV Grand Rapids, Michigan, this 3rd day of December, 1921..

FRED H. Donna.

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