US1460202A - Automatic stop for phonographs - Google Patents

Description

June 26, 1,923. 1,460,202

A."$. LINDIHOLM AUTOMATIC STOP FOR PHONOGRAPHS Filed Auz. 24. 1920 2 Sheets-Sheet 1 IN V EN TOR,

flaw/z L272 (27202777; BY MQMWM @41 A T T ORA/E Y June 26,1923. 1,460,202

A. S. LINDHOLM AUTOMATIC STOP FOR PHONOGRAPHS Filed Au!- 24 1920 2 Sheets-Sheet 2 '{NVENTOR, flamn 3. Land/202272 ATTORNEY;

Patented June 26, 1923.

UNITED STATES 1,460,202 PATENT OFFICEQ AARON S; LINDHQLM, OF ORANGE, CALIFORNIA.

AUTOMATIC STOP FOE PHONQGRAPI IS.

Application filed August 24, .1920. Serial No. 405,682.

To all whom it may concern:

Be it known that I, AARON S. LINDHOLM, a citizen of the United States, residing at Orange, in the county of Orange and State of California, have invented new and useful Improvements ,in Automatic Stops for Phonographs, of which the following is a specification.

This invention relates to automatic stops for phonographs and particularly to a stop which may be utilized in connection with the tone-arm of a phonogra h and the turntable of said phonograph. t has for an object the provision of a device of this character which will stop the record from playing immediately upon cessation of the playing of the record, without the necessity of adjusting the sound box or rather, the needle associated with the stylus of the sound box with relation to the first and last grooves of the record. In practicing the invention, I rovide a lever which has a pivoted connection with an arm which is attachedto a portion of the tone-arm, and which lever cooperates with a particular form of governor operating in conjunction with the turntable of the phonograph, so that when the tOne-arimrait'ter playing across the record and reaching the last groove thereof, will cause the governor to operate means which willengage a trip allowing the brake to engage a portion of the. turntable and by its, frictional engage ment therewith stop the turntable from rotating. .Obviously, in place of a brake engaging the periphery or some other portion of the turntable. the trip mechanism might operate a stop associated with the disc ot the phonograph governor and bring, the turntable to a stop. In fact. in certain phonographs, particularly of that type of phonograph which utilizes a cylindrical record, it is customary to cause all. braking action to be upon the governordisef The inventor realizes that at the present time there are many automatic stops on the market, most of which, however, operateon the principle of following the movement of the tone-arm so that when the sound box and the needle associated with the stylus have made their appearance upon the market and those that-have, have not been fool proof. In fact, most automatic stops on the market today "cause the operator-more or less trouble andin addition require an adjustment of the sound box with relation to the first and last groovesof a record. I i

have in the device about to be described, and which is illustrated in the drawings, provided at'orm of automatic stop which may be built in or incorporated with a phonograph or whichmight b utilized as an attachment for any existing phonograph now in use by any person. i

The device in question is simple and inexpensive in construction, and free from the ordinary defects incidental to automatic! stops. It requires no adjustment, and, in fact, does not detract Irom the appearance of the phonograph in any way, nor does it require anfoperation on the part of the operator of'more than operating or rather, releasing thebrake from the turntable, as is ordinary practice, so that the turntable may rotate. a i

, The invention has for further objects the provision of an improvedautomatiostop for phonographs which will be superior in point of relative simplicity and inexpensiveness, taken in conjunction with utility, de-

sirability and general efliciency and serviceability.

Vith the above and other objects in view, the invention consists in the novel and useful provision, formation, construction, association and inter-relation of parts. members and features, all as described in the accompanying drawing, described in the followclaiins. i

In the drawings: i H Figure 1 is a perspectiv view of a phonograph utilizing the'improved automatic stop; r v

Figure? is a fragmentary top plan view of a phonograph showing the tone-arm of ing statement, and finally pointed out in same and the improved automatic stop asso ciated therewith; p

Figure 3 is a fragmentary cross-sectlonal elevation taken on the line Figure *2. and looking in the direction of the appendedarrows; Figure 4 is a fragmentary cross-sect onal view of certain features of the invention, and taken on the line af -we", Figure 2;

Figure 5 is a fragmentary cross-sectional is;

elevation, of further features of the invention, and taken on the line w w of Fig. 2,

and looking in the direction of the appended arrows;

Figure 6 is a fragmentary elevation of a certain element used in practicing the invention;

Figure 7 is a plan view of a modified form of governor which may be used in utilizing the invention;

Figure 8 is a cross-sectional view of the v governor shown in Figure 7 and taken on the line as 03$, Figure 7, and looking in the direction of the appended arrows;

Figure 9 is a fragmentary top plan view showing a modified form of the automatic Figure 12 is a fragmentary cross-sectional elevation of the device shown in Figure 11, and taken on the line x c Figure 11; Figure 13 is a fragmentary elevation of certain details of construction and taken on the line 0a w Figure 11; and I Figure 14 is 'a. fragmentary perspective view of certain elements used in practicing the modification shown in Figure 11.

Corresponding parts in all the figures are designated by the same reference characters. Referring now .particularly to the first form of construction of the automatic stop as illustrated in Figures 1, 2, 3, 4:, 5 and 6, A designates a phonograph of which 1 is the tone-arm,-and 2 the sound box associated with the tone-arm, and 3 the turntable. B represents the automatic stop of which A is a band having angularly disposed ends one of which ends co-operating with a rod 5. which rod in turn co-operates with a pivoted lever 6 and which pivoted lever in turn has associated therewith a rotatable member 7 which normally engages the periphery of the turntable 3. A bent rod 8 engages a portion. of .the member 7 and when so engaging a portion operates atrip 9 which allows a brake 10 to frictionally bear against the edge or rim of the turntable 3 and stop the rotation of same. a

In detail, the band 4 is provided with angularly disposed and substantially parallel ends 11 and 12, one of which ends, as 11, is extended in length. Both of the ends 11 and 12 have, as at 13 and 14. a transverse threaded perforation within which threaded portions of the perforations a screw. 15, is

turned, so that the band 4: may tightly engage a portion of the tone-arm 1. on that portion of the tone-arm 1 which would be considered its pivotal axis, as 16. A portion of the extension 11 of the band 4, see Figure 4, is provided with a ball part, as 17, and which ball part co-operates with a socket part upon the lever or rod 5, as shown at 18. The rod or lever 5 is angularly offset, or stepped, for a portion of its length, as at 19, and the parts of the lever 5, as 20 and 21, are substantially parallel with each other, with the part 20 carrying the socket 18. The part 21 is of extended length. and has a portion of the length 21 bent downwardly as at 22, along one edge thereof, for purposes to be described. See Figure 6.

- The pivoted lever 6 ,shown in Figures 2 and 5 has portions adjacent each and angularly-related to each other as 23 and 2 1; a portion of the part 23 has an upstanding head 25 adjacent the end thereof. The portion 25 is recessed as at 26 to accommodate the angularly directed edge 22 and the fiat face 27 of the lever or bar A friction means 28 is detachably secured to the head 25 by means of screws 29 imbedded within the portion 25. The friction means 28 may consist of a spring brass or other material which may be bent downwardly as at 30 so as to engage the top surface 27 of the extended portion 21 of the rod 5, and hold it in tight relation to the head portion 25 of the extension 23 of the pivoted lever 6. At the part where the directions of the ends 23 and 24 change,'as at 31, a pivotscrew 32 passes through a perforation 33 within the lever arm 6 and thence through a portion of the top board of the phonograph A, as at 34. Disposed between the top surface of the phonograph A and the bottom surface of the lever 6 is an anti-friction or washer means The bottom portion of the screw 32 is threaded to accommodate a nut 36 so as to hold the member 6 in close relation to the phonograph A. The opposite end of the lever 6 or that portion known as 2 1, provides for a bearing near one end thereof for allowing the member 7 to be pivotally mounted thereon as at 37. Referring to Figures 2 and 3, it will be seen that the rotative member 7 comprises a circular cap member provided with an internal hub portion 38 accommodating a pivot 39, which pivot in turn joins with the arm 2 1 as at 37, so that the member 71 nay rotate. Confined within the upstanding rim as at 40 of the member 7 are what may be termed swinging weights a1 provided with pivoted arms 12, pivoted to a portion of the base 13 of the member 7 as at 4 1. The ends of the arms 42 have weighted elements 45 mounted thereon, and which weighted elements have one of their edge portions as 416 arcuated. to correspond to the internal curve of the rim 40 of the member 7. Resilient opposing means such as springs A8 are joined to a portion intermediate the arms .42 and to the hub portion 38 of the member 7; The members 41 may be properly called, in fact, the member 7, with the members 41, might be called a. governor, and it will be noted that the members 41 of which there are two, are

arranged on opposite sides of the pivot point 37, of'the governor, so that there Will not be any up-settin'g torque when the member 7 is rotated, and the weighted elements are being drawn outwardly, due to centrifugal force. The outer periphery of the rim 40, as at 4:9, is covered with some friction engaging means, as it is intended that the member 7 or, let us call it, governor 7, which normally bears against the peripheral rim a. of the turntable 3, is rotated by the turm table 3. The rod 8 is madepreferably in two parts, ash and c and a collar means, 50, detachably joins the portions 6 and 0 so that the portions may bee-Xtended in length. Referring to Figure 3, it will be observed that the rod 8, as at b, has a downwardly directed end p0rti0n 51 and a portion 0 of the rod 8 after it leaves the collar is downwardly directed as at 52 and then, see Figure 2, is angularly bent to one side as at 53, then again bent as at 54, then offset as at 55 corresponding to the offset portion 53, then bent as at 56 so as to lie in the same plane as the portion 54, andfinally with an end portion as at 57 passing beneath the rod or lever- 5. That portion as 53 of the rod 8 issurrounded and confined by a pivoted trip 9, which trip 9 has a re turnedly curved end portion 58, engaging the peripheral surface at :33 of the rod 8.

Thus it will be seen why the rod 8. isbent as shown in the drawing and just described. Obviously, the bent portion, or the angularly directed portion confined between that portion known as c and that portion known as 54, prevents lateral displacement or play of the member 8 when confined between the curved and returned portion58 of the trip 9.

The trip 9 which is really a pivoted arm,

fulcrumed at a point as at has one of its end portions, as 60, provided with a shoul shoe portion is detachably joined and ads justably secured by means of a screw 66 to a fulcrumed arm 67. The fulcrumed arm 67 has one portion of thesame curvedly and upwardly and inwardly bent as at 68, so that the operator may grasp the same by the fingers. The opposite portion, as 69, has a head part 70 normally engaging the shoulder portion 61 of the trip '9. The brake l0 likewise has a yielding means Tlnormally urging the'shoe 65 of thel brake 10 into'engageine'nt with 9 the rim a of the turntable 3'whenthe brake is allowed'to operate, so that theturntable will be prevented from turning. 1 It isthought thatit would be well to describe the operation of the device'as illustrated and just described at this time, before describing the modifications of the device as illustrated in the remaining figures, namely, Figures 7 to let inclusive;-

W'hen the tone-arm 1, with its soundbox 2, is brought tothe edge of the record so that the needle mayplaywithin the groove of the record, it will be seen that the'band 4 surrounding the pivotal point of the tone arm l a-s at 16 will rotate in conjunction with movement of the tone-arm 1. As it moves, it will, of course, pull the lever or bar 5 along with it, tending to move in the direction indicated by the 'curved arrow of Figure 2. Thls operationof course tends to shorten the lever arm 5 and particularly the portion 21 of said arm. WVhen thishappens,

the end 57 of the member 8 will engage'the bentdownedge'p'ortion 22 of the rod or bar 5 and when this happens, the rod 8 will tend to rotatedownwardly asshown by the dottedlinesin Figure 3, and lift the portion.

Z) upwardly. In other words, the bent down edge portion 22 of therod'f) is cam-likein its action, the bar 8, of course, rotating about the pomt'58. The friction means 28 tends, of course, to prevent movement of the'rod .5 and inasmuch as the rod 5 will tend to move inwardly or outwardlywithin the race formed between the head 25 and the friction means 28, it is necessary to slightly curve a portion of the head 25 as at 72. Thus the rodwvill tend to describe a small are within the head 25 and the friction means- 28. hen so doing, the rodwill. tend to pull the lever 6 about its pivot point 32, but this action will be opposed bythe upstanding pin '73, mounted upon the cover of the phonograph A engaging an edge of the lever 6. Thus the governor or member 7 will be pulled 1 away from its frictional engagement withthe rim a of the turntable It is of course assumed that the brake 10 hasits shoe 65 bearingagainst the'rim a of the tur11- table and preventing rotary motion of the same. Nowfas thebrake is releasedifrom theturntable so that the turntable may rotate, as the tone-arm 1 with its sound box 2 progresses across the grooves of the record as shown in Figure 2, the lever 5 gradually re-tracesits path so that it passesin the direction of the arrow indicated 'on the right-hand side of the Figure 2, through the head 25 and the frictionmeans 2S. As this happens, of course, the governor 7 is pressed against the rim of the turntable and is rotated.- When the sound box or rather when the needle associated with the sound box stylus reaches the last groove, there is a short jump of the needle into an endless :circular groove. Vhen this happens the sound box and the tone-arm 1. no longer progress in their movement andthe rod 5 remains stationary. This operation tends to release the pressure of the rotatable member or governor 7 from against the edge a of the turntable 3 and the governor weights withinthe cap gradually lessen their outward swing, being drawn. inwardly :by the yielding means 48 joined thereto. As the-rod 5 has progressed along within the head 25, the end 57 has passed from beneath the cam-like portion the downwardly directed portion 22 of the arm 5, and that portion known as b of the rod 8 is allowed to drop downwardly within the space confined by the cap portion of the governor 7. As the governor weights are not being urged outwardly but are being urged inwardly due to the lessened rotation of the member 7, the arm portions 41 are urged inwardly to the end portion 51 of the rod 8, and tend to draw the rod to one side in the direction indicated-by the small .arrow within the member 7- of-Figure 2. When this happens, thettrip 9,1ikewise rotates in the direction of the arrow'indicated thereon, andthis releases the shoulder portion 61 so that the portions will be released therefrom andthe brake-shoe 65 of the brake 10 allowed-to engage the rim a of the turntable 3, and prevent further rotation of the same.

v The modification of the rotatable member or governor 7 shown in Figures 7 and 8, es-

sentially consists in providing diametrically opposed rods, as 741 and 7 5, and upon these rods 74 and 7 5 are co-axially mounted weights 76:whiclr are normally urged inwa-rdlyby yielding means 77 upon the rods '74: and respectively and bearing against "in any manner work on a different principle from the-stop described first in the specification. The modification shown in Figures 9 and 10 is identical in principle with the automatic stop illustrated in Figuresl and 2-w1th the followlng GXCBDUODZ The governor 7 utilizes upwardly swinging arms 78 "pivotally joined, as at 79, upon diametrireally opposedsides of a hub 80, which hub 80 is rotatably mounted upon a bearing rod 89, held to a bearing plate (3 mounted upon the phonograph A. hen the governor 7 is rotated, the arms 78 of said governor tend to move upwardly, due to centrifugal mounted upon the top surface of the phonoremarks.

force, but this movement is opposed as in the case of the former governor described, by means of'yielding elements 91, joined one end to the governor levers and the other end to the hub 80. It will be seen by referring to Figures 9 and 10 that the governor casing presents a convex surface in plan view. The rod 8 shown in Figures 2 and 3 is dispensed with, and a bar 92 substituted. This bar is divided into two portions, as 93 and 94:, wit-h the portion 9i having an angularly directed end 95 passing upward within the governor casing; An opposite stretch of said rod 94 is bent upwardly in a U-like formation as at 96, and an end portion, as 97, after it leaves the U-portion 96, is provided with pivot point 98, which co-operates with a bearing 99 located in an end 100 of the rod 93. The rod 93 is pivotally graph A, as at 101, and has disposed be tween the lower surface of said rod 93 and the top surface of the phonograph A where it is pivotally joined, a washer 102 to prevent friction. Referring to Figure 10, it will be seen that a portion of 'the rod 93 extends inwardly upon the U portion 96 as at 103 and a pin 104: passes through a perforation located central of the U-shaped portion 96: and a portion as 105 of the extension 103. Surrounding the pin is a coiled spring or yieldingmeans 106, which tends to press the angularly directed end portion 95 of the bar 94; upwardly as shown in Figure 10. The bar 92 has a Y-shaped por- 7 tion 107 and 108. The portion 107 co-operates underneath the bar or-rod 5 and engages, as the dotted 1 lines 109 show, the portion 22 which is downwardly directed as has been stated. It is to be understood, 1 of course, in referring to the rod 92, that it is intended to be implied that that portion of the rod 92 known as 94 is included by the In other words, it is the rod 94 which has the Y-portion 107 and 108. The hinged portion which joins the bar 9 1 and 93 of the rod 92 really joins what might be termed the trip 9. Infact. in place of calling 93 a portion of the rod 92, it might be termed the trip 9. However, this is a matter of choice. In any event. the results are the same, and when the portion 107 engages the portion 22, the arm 94 with its angu- "larly directed end 95 is pushed downwardly.

Assuming, now, that the turntable is rotating, the general appearance will be shown in Figures 9' and 10, but'when the needle of the stylus reaches the non-ending groove of the record afterthe record'has finished playing. the arm 5, as has been before described, will cease its lineal moven'ient and the friction of the governor 7 against the rim of the turntable will be lessened, and the weights of the weights will strike the angularly directed end 95 and press thesame to one side, causing it to revolvesideways about the pivot 59. .When this happens, the trip 9, or as you please to call the same, the rod 93 will be rotated slightly, releasing the trigger 9, allowing the brake shoe to engage the rim a. ofthe turntable andoppose rotation of the same. 1

WVhen the tone arm 1 has been brought into a position to commence playing the record, the projection 107 has been forced downward under the rib 22 and assumes the position of the dotted lines of Figure 10,

the bar and lever 5 by the number 111, as

the bar is slightly different in contour or shape, in that it is first provided with an angularly directed end portion 112 which co-operates with a ball and socket portion 17 and 18. The horizontal or outward strip of the rod 111 is provided with an angularly directed rimportion 113 corresponding to the downwardly directed rim portion 22 of the rod 5, as shown in Figures 12 and 14. Confined within the phonograph box A is a U shaped bracket member 114, which bracket member has extensions 115 provided with perforations 116, joined to an end or side 117 and within the phonograph A are outstanding lugs 118, which lugs are likewise provided with perforations.

Vithi'n the perforations 115 and 116 is provided a pin 119, so that the bracket member 114 may rotate around said point. The opposed parallel arms of said bracket, as 120 and 121, carry between them a governor 122. The governor has a shaft, 123, passing through a bearing within the arm 121 down wardly and resting in a bearing within the arm 120. The upper strip of the shaft .123 passes through a perforation 124m the top cover of the phonograph A and upon the end which passes through said perforation 124 is a disc 125, which disc normally bears against the edge a ofthe turntable 3. The governor 122 comprisesin the main a disc 1 26 co-axially mounted upon the shaft 123 and which disc has a slidable hub portion 127, which hub portionfis provided with diametrically opposed ears 128. A fixed sleeve 129 is also co-axially mounted upon the shaft 123 and is provided adjacent one end thereof with outstanding diametrically opposed ears 130. Vi eights 131 joined to lever arms 132 are .pivotally fastened to the ears 130 and alink 133 joins the lug 128 with a portion of the lever arm132. A yielding means,.such as a spring, 134, is disposed between the end portions of the member 129 and 127, respectively, and normally urges the said members apart from each other. A pivoted L shaped arm 135 is mounted betweenspaced parallel lug members 136, which lug members are associated withthe arm 120 of the frame or bracket 114. One end, as 137, of the L shaped member, is angularly directed. It will alsobe observed that the pivot point for said L shaped member occurs where the two leg portions join one another. Cooperatin with the brake member 10 is an L-shape member. 138, which L-shaped member has one of its leg portions provided with an angularly directed end 139. As shown in Figures 12 and 13, a portion of the member 138 passes through the cover of the phonograph A and engages a recessed portion 140 located in the brake 10 and shown, by the dotted lines 141 of Figure 11. A bushing or bracket 142 held to the under surface of the phonograph cover A normally tends to hold the member 138 in position. The bushing or bracket 142 is provided with a perforated ear 143 and a portion of the member 138 is provided with an outstanding perforated lug 144. Between said members 143 and 144 is stretched a yielding means 145 which normally urges the member138 upwardly through the hole in the bushing, 142, so that the end of said member, as .146, may pass within the recess 140. Only when the brake 10 has its pressure removed from the edge a of the turntable 3, will the end 146 of the member 138 engage the recess 140 of said member. 1

The operation forthis last modification is as follows: When the brake is in the position shown in Figure 11 so thatthe turntable may rotate, the disc 125 will bear against the rim a. of the turntable 3 and rotate with the same. As the-tone-arm 1 moves so that'the sound box may play upon the record andthen remove the brake from its frictional engagement with the turntable. When this happens the end 146 will engage the slot 140 in the brake 10, as shown at 141 in Figure 11 and the inclined'plane action of the rib 113 of the rod 111 will cause the L-shaped member 135 to assume the position indicated by the dotted lines in Figure 12, thus pushing the plate 126 up, releasing the down-push on the brake trigger 138. \Vhen the tone arm'l has moved far enough along the record so that the governor B has gained enough momentum to hold the plate 126 up err of the member 138, the L-shaped member 135 slides down the inclined plane 113, thus allowing the trip mechanism to become operative. Now, when the needle hits the continuous non-ending grooved portion of the record, after the record has been played, the rod 1.11 will no longer tend to move and because itdoes not move will gradually release the pressure of the rotating disc 1% from the rim (1 of the turntable 3 hen this occurs, the governor balls 131 will not swing outwardly as far as they did, and the disc 126 will bear against a portion as 1 1? and tend to press the L-shaped rod downwardly as indicated by the solid lines. Likewise, the disc 126 will bear against the angularly directed end 139 of the L-shaped n1ember 138 illustrated in Figure 13, and when this occurs the end 146will be released from the groove 140 located in the brake 10 and the brake will be urged by its yielding means 71 into such a position that its shoe will bear against the rim a of the turntable 3 and stop its rotation.

The clamp 1 maybe attached'to any part of the mechanism which moves in relation to th tone arm.

It is obvious that many changes and variations and modifications may be made in departure from the particular description and showing of the accompanying drawing, in adapting the invention to varying condi- "tions and requirements of use and service,

without, however, departing from the true spirit of the invention. Having thus disclosed my invention, I claim and desire to secure by Letters Patent: 'lrThe' combination with a phonograph turntable and swinging tonearm; or" a governor mounted adjacent the turntable and adapted to be moved toward and away from the same, means connected with the tonearm for moving the governor toward the turntable in travel of the tonearm toward the center of a record upon the turntable, brake means for the turntable, and means normally holding the brake means inoperative, and controlled by the governor to release the brake means, said governor havving a rotatable part adapted to be turned by contact with the turntable.

2. The combination with a phonograph turntable and swinging tone-arm; of a governor mounted adjacent the turntable and adapted to be moved towardand away from the same, means connected with th'etonearm for moving the governor toward the turntable in travel of the tone-arm toward the center 'of a record upon the turntable, brake'means for the turntable, and means normally'holding the brake means inoperaernor and its support and likewise move relatively thereto.

3.-The combination with a phonograph turntable and swinging tone-arm; of a governor mounted adjacent the turntable and adapted to be moved toward and. away from the same, means connected with the tone arm for moving thegovernor toward the turntable in travel of the tone-arm toward the center of a record upon the turntable,

brake means for the turntable, and means normally holding the brake means inoperative, and controlled by the governor to release the brake means, said governor having a rotatable part adapted to be turned by contact with the turntable; said governor having a member rotatably mounted and: to be rotated by engagement with the turntable, and having a centrifugal element acting in the rotation of said governor member to actuate said means for releasing said brake means.

4. The combination with a phonograph turntable and swinging tonearm; of a governor mounted adjacent the turntable and adapted to be moved toward and away from the same, means connected with the tonearm for moving the governor toward the turntable in travel of the'tone-arm toward the center of a record upon the turntable, brake means for the turntable, and means normally holding the brake means inoperative, and-controlled by the governor to release the brake means, said governor having a-ro'tatable' part adapted to be turned by contact with the turntable, said means for releasing said brake means being operatively associated with said means connected with said tone-arm, whereby the co-action fot said governor and said means for releasing said brake means is prevented. until the tonearm has executed a definite travel.

5. The combination, witha phonograph turntable and swinging tone-arm; of brake means for the turntable, releasing means for said brake means, and a centrifugal governor controlling the releasing means and in turn controlled by movement of the tone- 6. The combination, with a phonograph turntable and swinging tone-arm; of brake means for the turntable, releasing means for said brake means, and a governor controlling the releasing means and in turn controlled by movement of the tone-arm; said governor having a rotatable member adapted to engage and be rotated by the turntable and a centrifugal element acting to actuate said releasing means and said brake means.

7. In an automatic stop device for phonographs, the combination with the tone-arm and turntable thereof, of means associated therewith, whereby when the tone-arn1 ceases its progressive movement across the surface of a record which is upon and ro- 10 tating with the turntable, the said means operates, stepping rotation of the turntable;

said means lncluding a centrifugal governor name to this specification in the presence of 15 two subscribing witnesses.

- AARON S. LINDHOLM. Vitnesses: I

EDNA TURNER, RAYMOND C. LINDHOLM.

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