US2270995A - Magazine phonograph - Google Patents

Description

.27, 1942- E. COMPARE 2,270,995

MAGAZ INE 'PHONOGRAPH Filed April 22,1939 8 Sheets-Sheet 1 Jan. 27, 1942 E. COMPARE MAGAZINE PHONOGRAPH 8 SheetsS'neet 2 Filed April 22, 1959 W1 7 ww \lj .Rc x mg Q: Wm Q 7 Q 111111411] {X E. COMPARE MAGAZINE nonosmm I Jan. 27, 1942.

Filed April 22. 1939 8 Sheets-Sheet 3 Jan. 27, 1942. E. COMPARE 2,270,995 AGAZINE PHONOGRAPH Filed April 22, 1959 B Sheets-Sneet 4 Jan. 27, 1942 v E. COMPARE.

MAGAZINE PHONOGRAPH Filed April 22, 1939 8 Sheets-Sheet 5 E. COMPARE MAGAZINE PHONOGRAPH Jan. 27, 1942.

Filed April 22, 1939 8 Sheets-Sheet 6 E. COMPARE MAGAZINE PHONOGRAPH Jan. 27, 1942.

Filed April 22, 1939 -8 Sheets-Sheet 7 Jan.27, 1942. COMPARE 2,270,995' I MAGAZ INE PHONOGRAPH Filed April 22, 1939 8 Sheets-Sheet 8 ZZZ 98 9? 707 707 86 Patented Jan. 27, 1942 UNITED STATES PATENT OFFICE 2,210,995

mcaznvs monocmrn Enzo Compare, London, Application April as. 19:9, Serial No. 269381 In Great Britain April as, was in Claims. (01. 274-10) This invention relates to magazine phonographs or like talking or sound reproducing machines and to record changing mechanism whereby a series of records may be played successively, the changing of the records and ancillary operations being P rformed automatically. The invention is more particularly concerned with mechanism comprising, an oilfsetv or shouldered improved mechanism of the above character adapted to change and play in succession'a series of records of varying diameter without manual.

adjustment. A further object is to provide improved means for manually starting. repeating and rejecting any record. A further object is to provide improved means for initiating the record changing cycle of operations, and another object is to provide improved means for stopping the mechanism automatically on the termination of the playing of the last record. A further object is to provide a mechanism capable of operating satisfactorily when tilted and thus suitable for use on board ship. Other objects of the invention will be clear to those engaged in the art upon an understanding of the present disclosure.

According to a feature of the invention there is provided a unitary record feeding device comprising a generally horizontal, reclprocable plate engaging under the bottom record. disc of the magazine pile and a feed pawl slidable and rockablewith respect to said plate and engageable with the edge of said record disc, wherein the movements of the plate and feed pawl are separately controlled for successive operation by cam follower means.-

The nature of the present invention and a preferred manner of carrying thesame into execution will be more fully understood from the following description having reference -tothe accompanying drawings or an of the invention given by way of example.

tails of the mechanism taken from various aspects, Figures 3 to 5 showing especially cam means controlling the record feeding device, Figure 6 showing a control bar, Figures 7 and 8 showing clutch actuating mechanism in engaged playing of a record finishes, to start the record changing cycle;

Figures 13 to 18 are similar partial views in side elevation, partly in section, showing various stages in the feeding of record discs from the magazine to the turntable;

showing the pawl;

Figure 20 is an endview of the mechanism shown in Figure 19;

Figure 21 is a sectional elevation of a part of ,the record feeding mechanism showing the feed pawl on the return movement;

1 Figure 22 is a plan of a part of the mechanism Figure 23 is an elevation of the mechanism shown in Figure 21 with the feed pawl on the forwardmovement;

Figure 24 is a plan of a part of the mechanism inthe position of Figure 23.

. perspective with parts cut away .to show'other do Figures 3 to 10 are views in perspective of deas In reading the following description Figure 1 may be referred to throughout. as showing the majority of the parts, reference to other figures v being indicated where necessary.

In the illustrated embodiment of the invention The motor drives a .hollow shaft 23, projecting through the cover plate'and carrying a turntable, the rotation of shaft 23 being clockwise as seen in Figure-1.

A pinion 24 is loosely mounted on shaft 23 and can be connected thereto by a clutch device comprising a notchedpawl 26 ivoted on a plate 21 fast on the pinion and loaded by a spring 28 to engage a notch of a collar 25 fast on shaft 23. f

Pinion 2 4 is in constant mesh witha toothed wheel 30 carrying cam tracks 3i and 32. The

'outer' face of track guides a roller 33 on one end of a bell crank 34 mounted on a fixed pivot II and the outer face of track 32 and the inner face of track 3| guide a pin 99 on an arm 31 fast on a vertical sleeve 39 rotatable in a bearing boss 39 supported on plate 2|. A horizontal pln49 rotatable in the sleeve 39 is fast in a tone arm 4| carrying a sound box or pick-up 42 and stylus 43 and also in a vertical stem 44, whose upper end is fast in the tone arm and whose lower end carries a boss 45 engaging the tailof bell crank 34. The vertical movement of the tone arm is therefore controlled? by the cam track 9| and roller'-33'-'which is" held against the cam track by the weight of the tone' arm and sound box (see Figure 9) and the horizontal movement of the tone arm is controlled by cam track 32 and pin 38, which is prevented from leaving cam track 32, at, least for the greater part of itsand carries on its underside a stud (Figure and is provided with an extension 52 having a slight outward inclination to a line tangent to the curvature of tracks 48, 49. Stud 5| is positioned to engage between a pair of curved cam tracks 53 mounted on a bell crank 54 which also carries a pin 55; the latter engages extension 52 when stud 5| escapes from between tracks 59 at the ends thereof adjacent pin 55. These means serve to guide the arm 41 and determine its displacement about the pivot48 in accordance with the position of bell crank 54, which is pivoted to the base plate 20 at 58 and controlled by the record disc-feed mechanism as hereinafter described, being given a counter-clockwise bias (as viewed from above) by a spring 51.

The rim of wheel .39 is connected by spokes 59 to a hub 59 the lower end of which carries a cam 60 (see Figures3 and 4) engaging a stud 9| on a bell crank 82 having a joggled or downturned end 83 terminating in a lip 84 engageable with a stud 85 mounted on the upper face of cam 89. Bell crank 82 is mounted on a fixed pivot 89 and loaded by a spring 81 to hold stud 8| against cam except when stud engages the lip 84. On the outer arm of bell crank 82 is pivoted at 88 a pawl having a hooked nose 8.9 and a curved tall 19, the nose 89 being engageable with the end of the longer arm of bell crank 54, and the nose end of the pawl being heavier so that it tends to drop'and rest on a pin 1| projecting from the bell crank 82. The latter also carries a vertical pin 12 having a flat 13 formed thereon. On theunderside of cam 88 is a cam boss 14 engaging a pair of bars 15, 11 respectively pivoted being slotted at 99 to allow the spigot to pass through it. The extremity of the arm 88 is provided with rollers 81 adapted to rest on the topmost record disc of the magazine pile. Pivoted at 99 to the arm 88, within the slot 88 is an auxiliary arm 99, of which one end is provided with a roller 9| adapted to rest on the top record disc of the pile and the other end 92 is hooked to engage the tip 9| of the spigot 89. The arm 99 is further loaded by a light spring 85 which tends to raise the roller 9| and depress the hooked end 92 of the arm (see Figures 13 to 18').

.The lengths of the arms 98 and 99 and the position of the pivot 89 are so selected having regard to the relative heights of the shoulder 92 of the spigot 99 and of the pivotal mounting of the arm 98 that when the pile of record discs is supported solely on the shoulder 82 of the spigot that the edge of the pile of discs remote from the is kept substantially the same (see especially Figures 13 to 18).

The base of the arm 98 is formed as a yoke, of which thetwo ends are pivoted on the frame 93. one end being fast on a pivot pin 84 which passes through a bearing in one of the side plates of the frame 93; the inner end of the pivot pin 84 carries a short lever 93 having a hooked end 94 engageable with a longer lever 95 which is loose on the pivot pin 94 and is connected to the short lever 83 by means of a toggle spring 98' (see Figure 2). In the normal position the toggle top of the pile of record'discs and thereby supplements the weight of the arm in applying presto the base plate 29 at 18, 19 and lying on opposite sides of the axis of the cam wheel, being cranked spigot 99 whose tip 9| is joined to the lower part thereof by the cranked portion, the latter presenting a shoulder. 92 which serves to support the record discs; the lower part of the is detachably engaged with a stationary p'in (not shown) inside the hollow shaft, so as to be incapable of turning, e. g. by providing co-operating flats (not shown) on the ends of thesplgot 99 and the stationary pin.

of an arm 98 pivoted for vertical swinging on: frame 93 secured to the baseplate 39. The frame 99 is located at-oneside of the magazine pile and the arm 98 extends beyond the spigot 99, 9|,

sure to the top disc of-the pile. When the arm 98 is raised into a substantially vertical position for charging the 'magazine, the toggle spring passes over the dead centre and is therefore operative to hold the arm in the vertical position, stop means (not shown) being provided to prevent the arm from swinging back too far. In addition to its action on the arm 88, the toggle spring 98 is also, effective to swing the lever 95 clockwise or counter-clockwise (as seen in Figure,1) according as the arm 98 is raised or lowered, for a purpose hereinafter described.

The frame 89 also carries the mechanism for feeding the record discs from the magazine pfle to the turntable. This mechanism comprises a bridge-piece or bracket 91 pivotally mounted on v the frame 93 for rocking in a vertical plane, one spigot is inserted into the hollow shaft 99 and as of the pivotpins 98 being fast in the bridgepiece 91 and passing through a bearing in a side plate of the frame 93 for connection to a lever 99. which is in turn connected by. a link I99 to the bar 11, already mentioned (see Fig- I v '10 ure 5). The action of the cam 14 on the spring- The pile of record discs is steadied by means interconnected bars 15, 11 is thus transmitted to the lever 99 for rocking the bridge-piece 91. Blidably mounted on the bridge-piece 91 is a horizontally disposed plate ||I| carrying a pawl I99, thetail of which is selectively engageable IOI, being loaded by a spring I93 which draws gases the nose of pawl 102.

connected by means of a link I22 with the horiwith one or other of notches I03, I04, I03 in bracket member I03 to-the side plate of the frame 33 by a bracket I03. 4 small plate I01 is slidably mounted on the horizontal plate the member I01 into its rearmostposition (to the left in Figure 1) with respect to the plate- I9I. Pivoted on the plate I91 is a feed pawl I99 whose nose is shaped to lie in a slot I99 in the for-'- wardedge of the plate "I, being slightlyrecessed thereinto in the normal position. The underside of the nose of the feed pawl I99 en- The tail of feed pawl I09 is. selectively engageable with one or other of notches IIO, III, II2 formed in a vertical plate II3 pivotally connected at 1 to a bar II4 terminatinginstud llihavingaflattened face for engagement with flat 13 of th pin 12 mounted on the bell crank 32. The plate I13 is slldably mounted on a fixed central plate II9 of the frame 33 and is urged in a direction away from thespigot 30 by a spring 3 anchored in the plate H9 and attached to the tail of the bar II4, which is provided with a projection II3 engageablewith the plate I,I3 and serving as a stop to limit counter-clockwise rotation of the bar II4 on its pivot II1 under the influence of spring II3.

Pivoted to the plate H9 at I is a lever I2I zontalplate IM and by i'nean's of a link I23 with the longer arm (enga'geable by the pawl nose H) of the-bell crank 34 (see Figures 3 and 4).

The lower end of lever 95 is pivotally connected to a bar I24 slotted at I29 to receive a stud I23 secured in a lever I21 pivoted at I23 on the base plate 20 for horizontal rocking, and having pivoted thereon at I30 (Figure 6)- for vertical rocking a stop plate I29 loaded by a spring I31 (see Fig. 6). The lever I21 is slotted at I32" 4 to receive the arm I33 of a switch I34 for starting and stopping the motor 22. The stop plate I29 is engageable with a pin I39 (Figure 6) projecting downwards from the rim of the wheel I '30 when the lever I21 is partially swung clocka wise on/ its pivot (as seen in Figure 1);-when pin I35 strikes the stop plate I29, the lever I21 is swung further in a clockwise direction-and throws overthe arm 133 of the switch I34 to switch the motorofl. -The spring I3I serves a both to raise the stop plate I29 into the path-of pin I35, and also by friction of its tail on the base plate 20 prevents idle swinging back ofthe lever I21'on its pivot after switching on the mechanism, which would cause the stop plate I29 to foul the pin I35 onthe wheel 33 and thus stop the mechanism, as will hereinafter appear more clearly in thedescription of" the operatained in frictional relationship by means of a collar I40 (see Figure -10). Movement of the triangle I31 relative to the plate I is limited 7 by stop pins I42, I43 and movement of the plate I about its pivot I39 is limited by stop pins I44, I45 mounted on the cover plate. One edge of the plate MI is bent up to form an extended apropos p e I41 engageable with a verticallyupstanding flange 8 W0 6 '10. of catch I99 of a catch. I49 pivoted on the wheel 33 at I43 and having a downwardly projecting end I I 9I; a spring I32 urges the catch I49 towards 3 the rim of wheel 39 (s'ee'l'lgures '1, 8, 11 and 12). Theflange I43isensageablehyasmallroller I33 eccentrically mounted on the'underside of the turntable I34 (see l igures 2, l1 and 12), for

I49 is engaseable with a detent I33 associated with a clutch striker I33, both these parts I33 and I93 being pivoted at I31 on the base plate 29 (see-Figures? and 8). "Detent I93 carries a pin I33 connected by a spring I99 J3, to a pin I39 on the clutch striker I 33 and by a spring I3I to a pin I32 mounted on the base 1 plate; pin I30 also acts as a stop pin for the detent I33 being engageable with its edge. The clutch striker I33 is engageable with the end of 20 pawl 23 of the clutch mechanism and is adapted to enter a slot I33 formed in the plate 21 to arrest and lock the pinion 24 after unclutching it underside with a stud I31 (see Figure l) engage- 30 able with the stud II 9 and-is also provided with a finger I33 engageable with the tail 19 of the pawl 39,- 10 mounted on the bell crank 32. Bar I34 also carries a second finger I39 (Figure 8) engageable with flange I39 of the catch I49 for the purpose of clutching the driving pinion 24 tothe motor shaft 23, as hereinafter shown. I The underside of the bar I34 is further furnished with a'spur I 10 (Figure 6) which is shaped to form a ramp I1I engageable with the upper edge of the stop plate I29. The extremity of the bar I34 is slotted at "2 to engage a pin I13 mounted on a plate I14 which is fixed on a sleeve I15 rotatable in the cover-plate 2I and carrying a key I13 for hand operation: The outer edge of the plate I14 is formed to present a pair of notches I 11, 113 of which notch I11 terminates in an extended ramp I19 and notch I13 terminates in a stop face I33. The notches I11, I13

an ramp I19 are engageable by a roller I3I m untedon an arm I32 pivoted at I33 to a fixed bracket I34 and loaded by a spring I35 to press the roller I3I against the edge of the plate I14.

Movement of the key I13 rotates the plate I14 to impart longitudinal movenient to the bar I34.

The bar I34 has two alternative positions of rest according as the roller I3I is engaged in the notch I11 or in the notch I19. These positions correspond respectively to normal working" and repeat, as hereinafter shown. Movementof the plate In and bar In by means of the key no beyond the normal working position is effective for starting the mechanism or forrejecting a rec- 0rd in the course of playing, as will hereinafter be shown. Bar I 34 cannot, however, remain in the -starting" or reject position because the pressure of the roller I3I on the ramp I19, owing to the tension of the spring I35, causes plate I14 to return to the normal position in which the roller I3I lodges in the notch I11.

A control for stopping the mechanism at any time isalso provided, having a shaft I33 concentrically rotatable within sleeve I15 and carryin a control knob I31.- The lower end of the shaft I33 carries a lever I33 pivoted at I39 to a vertical flange I43 to which is pivoted a pawl bar I which is slotted at I9I. to receive the V hereinafter described, and the end I3I' I of the pin I35 oi the wheel 39.

over the switch I33, I34 into the ofi position and interpose-the stop plate I29 into the path The operative record-changing cycle occupies one complete revolution of wheel 39, the gear ratio of which to pinion 24 is 11 to 1', so that eleven complete revolutions of the motor shaft;

sufllce for completing the cycle. The operations in question comprise:

(1) Raising and lowering the tone arm; (2) Horizontal'swinging of 'the tone arm;

,of plate I9I. Concurrentlywith this movement,

but starting slightly later, cam 69 engaging stud-- 6| rotates bell crank 62 clockwise (Figure 3), causing the nose 69 of pawl 69, 19 to engage the longer arm of bell crank "rand swing it clockwise .(Figure 3), the motion being transmitted by link I23, lever III and link I22 to plate I9I,

causing the latter to advance vunderneath the bottom record disc of the magazine pile. During this movement, pin 12 slips paststud II5, the mind faces of pin 12 and stud H5 allowing mutual slipping and the spring II6 yielding slightly to allow bar 4 to swing clockwise (Figure 1) enough for this purpose. when plate I9I is depressed engagement ofthe tail of the .i'eed pawl I99 by plate II3 rocks the feed pawlto bring its nose into alignment with the face of plate I9I so that the feed pawl does not foul'the record disc when the plate I9I .advances.

(3) Engaging the bottom record disc of the After plate I9I has been fully advanced, cam

magazine pile and feeding it to the turntable;

(4) Unclutching the mechanism from the motor shaft and arresting the mechanism.

Operation (1) is effected by means of the outer face of cam track 3i, roller 33, bell crank 34 andstem 44 (see Figure 9). At the outset roller 33 is lodged in shallow recess 3i of track 3i, and the weight of the tone arm is supported by the tumtable and stylus, the heel of bell crank 34 being clear of boss of stem 44. As soon as the wheel 39 starts to move the roller 3.3 leaves the recess 3| and the heel of bell crank 34 engages the boss 45 of stem 44 and lifts the tone arm to raise the ,boss 14 engages bar and swings it counterclockwise (Figure 5), and springs 19'cause bar 11 to follow the retreat of cam boss 14- and move stylus from the turntable or record disc thereon.

creasing radius and allows thetone arm to bev gently lowered until the stylus rests on the rec- 0rd disc; finally the roller 33 re-enters the-re-.

cess 3i. i

Operation (2) is effected by means of arm 31 and pin 36 engaging cam track 32 (and the inner- 'i'ace of track 3|) and with extension tracks 46, '49 mounted 'on arm 41 which. is controlled by spring 59 and stud 5i engaging tracks 53 and by the engagement of extension 52 with pin (see Figure 1). Soon after the beginning of the,

cycle, and after the tone arm has been raised by cam track 3I, pin 36 is picked up by the incurved end of track 32 and the arm 31 is thereby swung outwards, the pin thereafter being held stationary by the constant radius parts of tracks 3| and 32 until it enters the channel between" tracks 49, 49 by which it is guided to swing arm 31 inwards again. At the same time arm 41, carrying the tracks 48; 49, is guided by engagement of stud 5 I with tracks 53 to locate the stylus above the edge of the record disc on the turntable and after the tone arm and stylus have been lowered the action of spring 59, controlled by the engagement of pin 55 with the slightly oblique extension 52 of arm .41, swings the latter slightly inwards; this motion is transmitted by track 49 to pin 36 and arm 31 to engage the stylus with l the beginning of the record groove.

Operation (3) is effected by cams 69 and 14' and followers 62, Y15 and 11 with the assistance of springs 91 and 19 (see Figures 3, 4 and 5), The cam boss 14 first engages bar 11 and swings it clockwise (Figure 5); this movement is trans-v mittedby link I99 and lever 99 to the bridge 91,- whichis thereby rocked to depressjthe free edge members, I", 99, 91 to raise the edge of plate I9I, which thereupon engages the bottom disc of the pile and slightly lifts the pile on the side engaged thereby, slightly raising the roller 9| of arm 99 and causing the latter to lever up the main arm 96 (the tip ll, of spigot 69 providing the fulcrum against which the hooked end 92 of arm 99 acts) and the rollers 91 are raised clear of the top'disc' of the pile, which is now supported at its edge by plate I9I as well as at the centre by shoui"er 82 of spi ot 99.

Continued movement of 69 to retreat and spring 61' causes bell crank 62 to follow it and swing counterclockwise (Figure 4), while spring 51 causes bell crank 54 to follow the retreat of pawl nose 69 and withdraw plate III. As long as the nose of the feed pawl I99 is underneath the. record disc it is held down and the tail of the feed pawl raised; the tail of the pawl I92 is also kept raised, its head being held down by the feed pawl. The raisingvof the plate III, already mentioned, therefore raisesthe tails of pawls I92 and I99 clear of bracket member I96 and plate I I3 so as not. to foul. the notches -I93'to I95 and III) to H2 when the plate I9I carrying the feed pawl I 99 retreats. It'must be explained that the notches I93I 96 and I I9I I2 and the tails of the pawls I92, I99 are so formed that the pawl tails will ride over the notches in the advancing movement and can only catch in the notches in the retreating movement. When,

therefore, the retreating of plate I9I has proceededfar enough for the feed pawl to escape from under the bottom record disc of the pile the tail of the'feed pawl willdrop, raising the nose to register with the edge of the record disc. The notches I93I9I and II9II2 beingpositioned to correspond with standard diameters of record disc the tail of the feed pawl I99 will find one of the notchw III to H2 beneath it and will engage withthe appropriate notch; also the rising of the nose of the feed pawl will allow the tail of pawl I" to drop also and it too will enter the appropriate notch I 93 or I 94 or I95 preventing further retreat of plate I9I and locating the plate III and train oi members I22, I2I, I23 and the bell crank 94 for the remainder of the cycle andthereaiter till the pawl nose 1I engages bell crank 94 in thenext succeeding cycle. In this way the track 63 are located for the remainder o! the cycle and the relevant parts are so. proportioned' that'when the pin 39 reaches wheel 39 causes c'am' the end of the tracks 53 the stylus is correctly positioned to enter the record groove, it being In the example illustrated notches IIII,III are appropriately located for engagement and feeding of a nine-inch record disc, notches Ill, III for a ten-inch record disc and notches I55, II! for a twelve-inch record disc. As twelve-inch discs sometimes vary somewhat widely from the standard diameter, the notches I05, II! are duplicated by providing an extra pair of notches appropriately locatedfor engagement and feeding of oversizerecord discs of twelve-inch nominal diameter as shown in Figures 13 to 17.

Bell crank 62 follows cam 60 until stud 65 has passed under the joggled end 63 of hell crank 62 and engages the terminal lip 64 (Figure 4); this holds stud GI oil? the cam 60 for a while and when stud 65 escapes from the lip 64 spring 61 brings the bell crank back sharply on to the cam 50. This causes the fiat I3 of pin I2 on the bell crank 62 which has already engaged the flat face of stud II5 to impart a sharp pull to bar II 4 to advance plate H3 and the engagement ofthe tail of the feed pawl I09 with one of the 1 I09 are returned to their normal positions by springs IISand lllilrespectively. Figures 13 to 17 illustrate stages'in the feeding of record discs from the magazine pile .to the turntable.

In Figure 13 the magazine is loaded to its full capacity of nine discs and the feed pawl I is in the act .of delivering the bottom disc, whose central hole has just slipped oil the shoulder 82 of the central spigot 80. The bottom disc is of twelve-inch diameter, slightly undersize, and

f the magazine pile have been delivthe turntable except two. The bridgelI has been rocked to depress slightly the edge of the plate IIII and the latter has begun to move forward in the direction of the 15 shows the position when all the recarrow so that the tailor the feed pawl I" is riding on the top of the plate Ill, thereby depressing the nose of the feed pawl into alignment with the face of the plate IOI. The previous record disc delivered having been of twelve-- are in? contact with the top disc of the pile, andit will be noticed that the inclination of thepile of discs is substantially the same in thisfi re and in the preceding figure. notwithstanding the difference in the number of discs in the magazine. As already explained-this results from the proportioning of the lengths of the arms 86 and 5| and the position'of the pivot '89 relative to the tip ll oi the spigot III- and the pivot on which the arm 08 rocks.

Figure 16 shows the position of the parts when the plate III has been moved forward underneath the bottom disc of the pile and the bridgepiece 91 rocked counterclockwise to raise the plate-"I. Itwillbeseen that the tail of thefeed pawl II! is now clear of the plate 3 which would allow the nose of the feed'pawl to rise were it not engaged underneath the bottom disco! the pile.

In Figure 17 the plate- IIII has'retreated until the nose of the feed pawl I09 has cleared the edge of the bottom disc of the pile allowing the nose of the feed pawl to rise and the tail thereof to drop and engage notch III corresponding to the diameter (ten inches) of the record disc. At

' the same time the tail of pawl I02 (not shown) the bracket I" (also not shown) thus limiting the tail of the feed pawl is therefore lodged in I that one of the pair of notches I I2 which is nearer the leading edge of the plate II3, the plate III being withdrawn to a corresponding extent. It will be noticed that as the leading edge of the plate IIII is still in contact with the bottom record disc, the left handside of the pile of discs is thereby slightly raised so that the arm 86 is also raised so as to-lift the roller 81 out of contact with the top disc of the pile.

In Figure 14 the twelve-inch disc at the bottom of the pile in Figure 13 has been delivered (and is no longer shown) and the parts are in the position occupied during the playing of thesaid disc. The bottom disc now remaining in the magazine is of smaller (nine-inch) diameter and as the tail of pawl I02 (not shown) is engaged in notch I05 of bracket I 05 (also not shown) the plate IIII is retained in the withdrawn position, so that there is a gap between'the leading edge 7 of plate IN and the edge of the bottom disc of the magazine pile, which is therefore entirely supported on the shoulder 82 of the spigot ll,

being steadied by the rollers 8'I and 9| carried by the arms 86 and 90; both these rollers are now in contact with the top disc of the magazine pile has engaged in the corresponding notch I M of the retreat of plate Ill whose leading edge is seen to support the edge of the bottom disc of the pile so that the roller 81 is raised from contact with the top disc. The parts are now in position for delivery of the bottom record disc by a forward movement of the plate I I3 and feed pawl I05, as shown in Figure 13.

Operation (4) (see Figure '1) is efiected on.

completion of the cycle by the catch "9 whose flanged end engages detent I55 and swings it on its pivot, tensioning springs I59, IGI; spring I55 swings the clutch striker I56 against the edge of plate 21 where it engages the end of pawl 26 and causes it to disengage from notch 28 of collar 25 thus unclutching pinion 24 from shaft 23. .At the terclockwise; this movement is frictionally transmitted by eye I38 to plate III until the tip of pawl III rests on flange I of catch I48, in

which position of the parts roller I53 carriedby g the turntable I I4 impinges lightly on flange I of plate I II at every revolution of the turntable, thesuccessive impacts being suflicient to overcome the friction between plate Ill and eye In it, so that the inward-motion of the triangle I31 6 continues while plate I is maintained sensibly the tip of pawl I41 over flange I50 of catch I40 to engage behind it before the next impact is delivered by the roller I53 on flange I40, so that when this occurs the catch I49 in pushed back against the pull of spring I52 causing the end II of catch I49 to release detent I55 and allow spring IOI to return it to its former position (see Figure 8). The edge of detent I55 therefore engages with pin I60 and swings the clutch striker If in playing a record it is desired to reject it and go on to the next in the magazine, the bar I44 is again moved beyond the normal position to the "start position and released.

No effect-is produced, on the switch which is already "on" but the finger Illefiects immediate re-engagement of the clutch 20, 29 as explained-above and thereby immediately starts the record changing cycle again.

I55 out of engagement with pawl 25 and slot I02, allowing pawl 26 to be engaged with notch 1 of collar by spring 20 to clutch the pinion 24 to shaft 23 and releasing plate 21 to allow the pinion to rotate, thus initiating the next recor I changing cycle.

maintained by the toggle spring 96. The bar I24 is therefore pulled sufiiciently to cause the end of its slot I25 to engage stud I26 and swing the lever I21 clockwise (Figure 1) far enough to cause stop plate I29 to be engaged by pin I35 when the latter is brought round to that point by the rotation of wheel 30. When this occurs pin I35 causes further rotation of plate I20 and Movement of bar I04 to the repeat" position"- by manipulation of key I10, so that roller I8I lodges in notch I10, causes stud It! to engage stud II! and rock bar II4 slightly on its pivot, with yielding of spring IIO, so that stud II5 cannot engage pin 12,-and causes finger I68 to depress the tail 10 of pawl 09, 10 so that the head 00 of the pawl cannot engage bell crank 54 (see Figure 6) This throws the feed mechanism out of action so that the rotation of wheel 30 merely operates the tone arm to repeat .playing of the record disc on the tumtable.

I claim:

1. A magazine phonograph including in combination a turntable, a member extending upwardly from the center of the turntable and providing a shoulder for supporting at their centers a pile of records of different diameters, means for engaging and laterallydisplacing records from said pile to cause their release from said support member onto said turntable, an out of balance arm hingedly mounted and extending beyond the support member above the record pile, the extremity of said arm being adapted to rest on the topmost record of the pile, and an auxiliary arm having one end resting on the topmost record at a point diametrically opposite to the extremity of-the main arm, and the other I34 is thrown into the-oi? position to stop the motor; at the same time any overrunning of 4'0 wheel 30 is prevented by the stop plate I29 engaging pin I35.

' Raising the arm 86 to the erect position for changing the magazine causes the toggle spring 96 to pass over dead centre and pull-lever 95 in a clockwise direction and as before this movement of lever 95.sets the parts I21, I29 in position for engagement by pin I35 so as to stop the machine. Similarly on lowering arm 85 on to the magazine pilethe toggle spring 85 on passing dead centre in'the other direction swings lever 95 counterclockwise, but owing to the slotted connections I25, I32, the plate I29 is not brought clear of'the path of pin I35 nor is the switch I33, I34 thrown into on position. The latter operation is performed by moving the bar I64 to the end of its travel beyondthe finger I69'to engage flange I of catch I43 (Pig-I ures 7 and 8) and move the latterto release 'detent I55, thereby causing the clutch 20, 20 to engage. As explained, the pressure of roller III I on ramp I13 brings back bar I64 to "normal working" position, the parts I21,l20 being left behind and prevented from swinging back by the friction-of spring I3I on the base plate; the switch is therefore left on."

end of which engages the extremity of the support member, the auxiliary arm being hingedly mounted intermediate its ends to the main arm.

. 2. A magazine phonograph including in combination a turntable, a member extending upwardly from the center of said turntable and providing a shoulder for supporting at their cenonto the turntable, a normally downwardly urged connected with said tone arm and movable for arm hingedly mounted for extending beyond said member and having an aperture through which the free end of said member may pass, the free extremity-of said arm being adapted to rest on the topmost record of the pile and an auxiliary arm pivotally mounted on said first arm and having an extremity resting on the topmost record at a point diametrically opposite to the extremity of the main arm. and means for biasing the auxiliary arm in alignment with the main arm 3:1 record changing mechanism for phonographscomprising a magazine carrying a pile of records .of different diameters one above the other, a tone arm, djustable means operatively laterally displacing said tone arm, a member movable from a position distant from the periphery of the records of the pile to aposition in engagement with the lowermost record of the .pile for measuring the diameter thereof, means operatively connected with respectively said member and the tone am moving means and movable by the'member-in an amount corresponding to its movement in measuring the ingly adjusting the tone arm'moving means.

laterally contacting the edge of said lowermost means for moving the'member'a'nd thereby the means for adjusting the tone arm moving means, and means for thereafter moving the adjusted tone arm moving means for laterally displacing the tone arm in position for playing the meas-' ured lowermost record of the pile. n

4. In a record changing magazine for phonographs, comprising a magazine carrying a pile ofv records of diflerent diameters disposed one above the other, a tone arm, angularly adjustable and axially rotatable means connected with said tone arm for laterally displacing the same, a reciprocable member movable from an outer position distant from the periphery of the records of the pile to a position in engagement with the edge of the lowermost record of the pile for measuring the diameter thereof, means operatively connected with respectively the recip- 7. A record changing mechanism for phonographs, comprising a magazine carrying a pile of records of different diameters disposed one above the other, a member mounted for lateral rocable member and the tone arm movingmeans and movable by'the reciprocable member in an amount corresponding to its movement in measuring the diameter of the lowermost record for correspondingly angularly adjusting the. tone arm moving means, means for moving the reciprocable member and thereby the means for angularly adjusting the tone arm moving means, and means for thereafter axially rotating said tone arm moving means for laterally displacing the tone arm in position for playing the measured lowermost record of the pile. r

5. In a record changing magazine for phonographs, comprising a magazine carrying a pile of records of different diameters disposed one above the other, a tone arm, angularly adjustable and axially rotatable means in which upon rotation said tone arm rides for lateral displacement, a

reciprocable member movable from an outer position distant from the periphery of the records of the pile to a position in engagement with the edge of the lowermost'record of the pile for measuring the diameter thereof, means operatively connected with respectively the reciprocable member and the tone arm moving means and movable by the reciprocable member in an, amount corresponding to its movement in measuring the diameter of the lowermost record, for correspondingly angularly adjusting the tone arm moving means, means for moving the reciprocable member and thereby the means for angularly adjusting the tone arm moving means, and means for thereafter axially rotating 'said tone arm moving means for laterally disposing the tone arm in position for playing the measured lowermost record of the pile.

6. A record changing mechanism for phonographs, comprising a magazine carrying a pile of records of different diameters disposed one above the other, a member mounted for lateral move:

ment between an outer position distantirom the sition beneath the lowermost record of the pile, said member being normally urged for upward movement, means for moving'said member from member at its inner position being contacted and restrained from its normal upward movement movement between an outer'position distant from the edges of the records of the pile and an inner position beneath the lowermost record of the pile, said member being-normally urged for .upward movement, means for moving said member from its outer position to its inner position, means for restraining 'said member from normal upward movement during its inward movement, said member at its inner position being contacted and restrained from'its normal upward movement by the undersurface of the lowermost record of the pile, and means for moving said member laterally from its inner position towards its outer position, whereby said member as it passes the periphery of the lowermost record of the pile is urged in its'normal upward movement for .laterally contacting the edge of said lowermost record, and means for further movingsaid member in lateral contact with the edge of the lowermost ber from its outer position to its inner position, means for restraining; said memberfrom normal ing its inward movement, said member at its ner position being con-' upward movement (1 tacted and restrained from full normal upward movement by the undersurface of the lowermost record of the pile, 'and means forfmoving said member laterally from its inner position towards its outer position, whereby said member as it passes the periphery of the lowermostrecord of the pile is urged in its normal upward movement for'laterally contacting the edge of said lowermost record, and means for further moving said member in lateral contact with the edge of the lowermost record inwardly towards its inner position 'to displace such lowermost record from edges of the records of the pile and an inner pothe shoulder of the element supporting the same. 9. A record changing mechanism for phonographs, comprising a magazine carrying a pile of records ofdifferent diameters disposed one above the othena member mounted for lateral moveme'nt between an outer position distant from the edges of the records of the pile and an inner position beneath the lowermost record of the pile and in contact with the undersurface of said lowermost record, said member being normally its outer position to its inner position, means for 55 restraining said member from normal upward movement during its i'nward movemen't, said by .the undersurface of the lowermost record of 70 the pile, and means for moving said member laterally from its inner position towards its outer position, wherebysaid member as it passes the periphery of the lowermost record of the pile is urged toits full normal upward movement for 76 urged for upward movement, means for moving said member from its outer position to its inner position, .means for-restraining said member from normal upward movement during its inward movement, said member at its innerpcsition being contacted and restrained from its normal upward movement by the undersurface of the lowermost'record of the pile, and means for moving said member laterally from its inner position towards its'outer position, whereby said member as it passes the periphery of the lowermost record of the pile is urged in its normal upward movement for laterally contacting the edge of said lowermost record.

10. A record changing mechanism for phonographs, comprising a magazine carrying a pile of normal upward movement during its inwardmovement, said member at its inner position being contacted and restrained from upward movement by the undersurface oi the lowermostrec- 0rd of the pile, and means for moving said member laterally from its inner position towards its outer position, whereby said member as it passes the periphery of the lowermost record of the pile is urged in its normal upward movement for laterally contacting the edge of said lowermost record, and means for further moving said memposition towards its outer position, whereby as the movable means passes the periphery of the lowermost record of the pile, said movable means is normally urged upwardly for projection above the member and into lateral contact with the edge of the lowermost recordof the pile, and means for laterally moving the movable means towardsthe center of the record pile and relative to the member mounting the same, to laterally displace the lowermost record contacted thereby from the pile.

13. A record changing mechanism for phonographs, comprising a magazine carrying a pilev of records of difierent diameters disposed one above the other, a member mounted for tilting about a horizontal axis and for lateral move-' ment between an outer position distant from the edges of the records of the pile and-an inner position beneath the lowermost record of the pile, means movably mounted on said member and normally urged upward for projection there.-

ber in lateral contact with the edge of the lowermost record inwardly towards its inner position to displace said lowermost record from the pile of records.

11. A record changing mechanism for phonographs, comprising a magazine carrying a pile of records' of different diameters disposed one above the other, a member mounted for lateral movement between an outer position distant from the edges of the records of the pile and an inner position in contact with the undersurface of said lowermost record of the pile, movable means on said member normally urged upward-' ly for projection thereabove, means for moving said member from its outer position to its inner position, means for restraining" said movable means from normal upward projection during the inward movement of said member, said movable means at the inner position of the member being contacted and restrained from normal upward movement by the undersurface of the lowermost record of the pile, and means for moving said member laterally from its inner position towards its outer position, whereby as the movable means passes the periphery of the lowermost record of the pile, said movable means is normally urged upwardly for projection above the member and into lateral contact with the edge of the lowermost record of the pile.

12, A record changing mechanism for phonographs, comprising a magazine carrying a pile of records of difi'erent diameters disposed one 'lbOVG the other, a member mounted for lateral movement between an outer position distant from the edges of the records of the pile and an movablemeans from normal upward projection during the inward movement of said member,

said movable means at the inner position of the member being contacted and restrained from normal upward movement by the undersurtace of the lowermost record of the pile, and'means for moving said member laterally from its inner above, means for moving said member from its outer to its inner position, means for upwardly tilting said member at its inner-position towards the undersurface of the lowermost record of the pile, whereby the movable means on said member is contacted by and restrained from its nor- ,mal upward projection by the undersurface of said lowermost record, and means for moving said member laterally from its inner position towards its outer position, whereby as the movable means passes the periphery of the lowerm'ost record of the pile, said movable means is normally urged upwardly for projection above the member and into lateral contact with the edge of the lowermost record of the-pile.

14. A record changing mechanism for phonographs, comprising a magazine carrying a pile of records of different diameters disposed one above the other, a member mounted for rocking about a horizontal axis and for lateral/movement between an outer position distant from the edges of the records of the pile and an inner position beneath the lowermost record of the pile, means mounted on said member for lateral movement with and relative to said member and normally urged upwardly for projection thereabove, means for moving said member from its outer to'its inner position, means for upwardly tilting said member at its inner position towards the undersurface of the lowermost record of the pile, whereby the movable means on said member is contacted by and restrained from its normal upward movement by the undersurface of said lowermost record, and means for moving said member laterally from its'inner position towards its outer position, whereby as the movable meanspasses the periphery of the lowermost record of the pile, said movable means is normally urged upwardly for projection above the member and into lateral contact with the edge of thelowermost record of the pile, and means for laterally moving the movable means towards the center of the record pile and relative to the member mounting the same, for laterally displacing the lowermost record from the pile.

15. A record changing mechanism for phonoof. records of different diameters disposed one above the other, a member mounted for tilting about a horizontal axis, and for lateral movement between an outer position distant from the edges of the recordsof the pile and an inner position beneath the lowermost record of the pile, means mounted on said member for-movement with and relative to said member and normally urged un wardly for projection thereabove, means for downwardly tilting said member at its outer position, means actuable as said member is downwardlytilted tor restraining said movable means from normal upward projection, means for moving said downwardly tilted member from its outer to its inner position, means for upwardly tilting said member at its irmer position towards the undersurface of the lowermost record oi. the pile, whereby the movable means on said member is contacted by' and restrained from its normal upward projection by the undersurface of said lowermost record,'and means for moving said member laterally from its inner position towards its outer position, whereby as the movable means passes the periphery of the lowermost record 01' the pile, said movable means is normally-urged .upwardly'for projection above themember and into lateral contact with the edge of the lowermost record of the pile, means operatively connected between said movable means and saidmember for arresting the movement of said member from its inner position towards its outer position as the movable-means projects into lateral contact with the edge of the lowermost rec-- ord, and means for laterally movingthe movable means towards the center or the pile and relative to'the arrested member mounting the same for laterally displacing the lowermost record from 30 the pile.

16. A record changing mechanism for phonographs comprising a magazine carrying a pile of records of diiierent diameters disposed one above a horizontal axis and for lateral movement between an outer position distant from the edges of the records of the pile and an inner position beneath the lowermost record of the pile, a pawl pivotally mounted on said member and normally 4o position, whereby as the pawl passes the periph- 50 ery of the lowermost record of the pile, said pawl is urged upwardly to project above the member and into lateral contact with the edge of the lowermost record of the pile.

17. A record changing mechanism for phono- 55 graphs comprising a magazine carrying a pile of records of different diameters disposed one above the other, a member mounted for rocking about a horizontal axis and for lateral movement between an outer position distant from the edges or the records of the pile and an inner position beneath the lowermost record of the pile, a pawl pivotably mounted on said member for lateral movement with and relative to said member, and normally urged upwardly. for projection thereabove, means for moving said member from its' outer to its inner position, means for upwardly rocking said member at its inner position towards the undersuri'ace of the lowermost record of the pile, whereby the pawl is contacted by and restrained from its normal upward movement by the undersurface of said lowermost record, and means for moving said member laterally from its inner position towards its outer position, whereby as the pawl passes the periphery of the lowermost record of the pile, said pawl is urged up-.

wardly to project above the member and into lateralcontact with the edge of the lowermost record of the pile, and means for laterally moving the pawl towards the center or the record pile and relative to the member mounting the same.

for laterally displacing the lowermost record from the pile.

18. A record changing mechanism for phone graphs, comprising a magazine carrying a pile of records of difierentdiameters dispoud one above the other, a member'mounted for tilting about a horizontal axis and for lateral movement bement with and relative to said member and normally urged upwardly for projection thereabove, means for downwardly tilting said member at its the other, a member mounted for rocking about Outer p ition, means actuable as said m mber is downwardly tilted for restraining said pawl irom normal upward projection, means for moving member at its inner position towards the undersurface of the lowermost record of the pile, whereby the pawl is contacted by and restrained from its normal 'upward projection by the undersurface of said lowermost record, and means for moving said member laterally from its inner position towards its outer position, whereby as the pawl passes the periphery of the lowermost record of the pile, said pawl is normally urged upwardly for projection above the member and into lateral, contact with the edge of the lowermost record of the pile, means operatively connected between said pawl and said member for arresting the movement of said member from its inner position towards its outer position as the pawl projects into lateral contact with the edge of the lowermost record, and means for laterally moving the pawl towards the center of the pile and relative to the arrested member mounting the same for laterally displacing the lowermost record from-the pile.

'ENZO COMPARE.

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