US2531374A - Selector mechanism for automatic phonographs - Google Patents

Description

E. F. ANDREWS SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Nov. 21', 1950 Filed Aug. 9; 1943 ll Sheets-Sheet l Nov. 21, 1950 E. F. ANDREWS SELECTQR MECHANISM FOR AUTOMATIC PHONOGRAPHS l l Sheets-Sheet 2 Filed Aug. 9, 1945 Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 ll Sheets-Sheet 3 I //l ////I l/A I! Nov. 21, 1950 E. F. ANDREWS 2,531,374

v SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS l1 Sheets-Sheet 4 Filed Aug. 9, 1943 v 1950 E. F. ANDREWS 2531,34

SELECTOR MECHANISM FOR AUTOMATIC FHONOGRAPHS Filed Aug. 9, 19 .5 11 Sheets-Sheet 5 I lw Wm! 21, 1950 E. F. ANDREWS 9 9 SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 ll Sheets-Sheet 6 Nov. 21, 1950 E. F. ANDREWS SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1945 11 Sheets-Sheet 7 ii'mn U M.- wwfdm w Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS ll Sheets-Sheet 8 Filed Aug. 9, 1943 ML n w w W 2 3 7206M: mfdww, 099W W Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1943 11 Sheets-Sheet 9 Mal/M770 N 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1945 11 Sheets-Sheet 1o Nov. 21, 1950 E. F. ANDREWS 2,531,374

SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS Filed Aug. 9, 1945 11 Sheets-Sheet 11 Patented Nov. 21, 1950 UNITED STATES PATENT OFFICE SELECTOR MECHANISM FOR AUTOMATIC PHONOGRAPHS' Edward F. Andrews, Chicago, Ill., assignor, by

mesne assignments, to J. P. Seeburg Corporation, Chicago, 111., a corporation of Illinois Application August 9, 1943, Serial No. 497,920

7 Claims.

Another object of the invention is to provide an improved selector which may be mounted on the phonograph or which may be located in remote relation thereto.

- A further object of the invention is to provide an improved selector for automatic phonographs, said selector being adapted and arranged for connection of a plurality thereof to a single phonograph.

A further object of the invention is to provid an improved selector for automatic phonographs which is adapted for connection to any of a large number of types of phonograph.

. A further object of the invention is to provide a selector for an automatic phonograph comprising means on the phonograph and means in the control unit adapted to move synchronously, and

having means in the remote control unit for arresting both synchronously moving means, to determine the playing of a particular record.

A further object of the invention is to provide an improved selector for an automatic phonograph of this type in which the -means on the phonograph, moving in synchronism with the control unit, is driven by the phonograph mechanism to control the operation of the means on the selector unit, the first said means bein arrested by an impulse from the control unit.

A further object of the invention is to provide a system of this type in which the synchronized means on the phonograph is rotatable, and the synchronized means on the control unit is also rotatable.

A further object of the invention is to provide a system of this type in which the synchronized means on the phonograph is reciprocatory, and the synchronized means on the control unit is rotatable.

' A further object of the invention is to provide a system of this type in which the synchronized means on the phonograph is reciprocatory, and the synchronized means on the control unit is also reciprocatory.

A further object of the invention is to provide a selector comprising a circle of actuable elements in the path of a rotating member adapted to cooperate with an actuated element to cause the playing of a recording on one face of a double-faced disc record, and to cooperate with another of said elements to cause the playingof the recording onthe other side of the same rec- A further object of the invention is to provide a selector in which a plurality of selector elements move in synchronism with amovable selector means on the phonograph until an electrical impulse controlled by one of said selector elements effects the selection of the desired recording.

A further object of the invention is to provide means for maintaining a plurality of selector units in synchronism with each other so that any recording can be played by a manual selecting operation performed at any one of said selector units.

A further object of the invention is to provide an electromagnetic escapement adapted to move a member past a series of selector elements in such a manner as to cause an electrical impulse efiective to cause the playing of a desired recording when the moving member encounters an actuated one of the series of selectorelements. Aiurther object is to provide a selector comprising a member moving past a series of actuable elements and an: electromagnetic escapement adapted to produce the selectin impulse upon the energization'of the escapement, and to restore. an actuated element to unactuated position when the escapement is de-energized.

A further object of the invention is to provide one or more selector units synchronized with selector means on a selective automatic phonograph and remote therefrom, adapted by manual means at the selector unit to produce an electrical impulse which, when transmitted to the selector means on the phonograph, will cause the selection of the desired recording.

A further object of the invention is to provide improved coin control means.

A further object of the invention is to provide a selector for selective automatic phonographs in which a moving selector device associated with the phonograph produces a series of electrical impulses to cause the corresponding movement of a selector member in synchronism therewith, which member cooperates with manually controlled means for electrically arresting the selector device to effect the selection of any desired record- A further object of the invention is to provide a remote control selector comprising an electromagnetic escapement' for maintaining synchronism between a moving member in the selector unit and a moving selector element associated with the phonograph.

Another object of the present inventionls the provision of a new and improved selector system for automatic phonographs wherein movable members at the selector units are maintained in synchronism by electrical means resiliently tendare synchronized after power is again suppliedat'o.

the system.

Another object of the present inventioniisito.

provide a new and improved selector system for an automatic phonograph wherein selections: to be played are stored at a remote selector unit and are individually transferred. to" the phonograph as the selections are played.

Other objects, advantages, and capabilities of the invention will appear from the following description of preferred embodiments thereof, taken: in conjunction: with; the accompanying drawings, in which:

Fig. 1. is anelevational; view; partly broken away, of a chassisaof" aphonograph: to: which my invention may beapplied;

Fig; 2 is an enlarged sectionaliplandetail, view, with parts omitted, the sectionbeing'taken on the 'line.2.-2iof Fig; .11;

Fig. 3 is a fragmentary sectional detail; the

section beingtakemon the linei3'3 of Fig; 2and rotated ninetys degrees clockwise; Theview'also includes partsnottshown in Fig.2,v

Fig". 4 isi'a: front view ofiazselectorfunit embodying: my invention. One: of these: unitsmay be located at some suitable place upon the cabinet housing the phonograph chassis illustrated. in

Fig; 1;. as at the: front: thereof; and: other units mayrberlocated:at'zvariousrplaces near: or far-from theiphonographi;

- Fig.2 his a: fragmentary-"vertical section-there through, the" section: being taken: on: the broken line:5i- -5-.of-Fig. 4;?

- Fig.1 6" is.-.an .eni'arged'sectional eievation; partly bri'ihen, away; of. the. selector: shown. in Figs; 4 "anch 5c the section being: taken; 0117. the line: 6-6 f? Fig:

Fig. 7- is afragmentaryviiaw similar-"to- Fig. 6 showing the elements in? a different position of adjustment;

'Fig:- 8 is" a similar fragmentary view' showing the: manner-in which: thecontact controlling dog isreturnedtcrinitial position;

' Fig: 9- is: a; fragmentary: view similar to Figs. 7 and8 showing the manner inwhich the cancel disc- H! ismoved to refease actuated pins;

Fig. 10' is a fragmentary sectionaldetail taken along line Iii-I0 of Fig; 6- andshowing the contact, controlling dogand the contact-arm: in section Fig. 11 is a? fragmentary sectional, view, the

sectionbeingtaken on the line. l-|l'i of-Fig: 5, showingcertain;elements adapted tar.- arrest the motor; after apredetermined degree: of: revolution;

Fig.12 is a similar view showing the: parts" in difierentrelation;

Fig; 13 is still, another similar View showing the parts inanother relation;

view, taken axially of pin 208 in Figs. 15 and 16, and; showing the. details ofthe governor control shown in Figs. 15 and 16';

Fig. 19 is an elevational view of a modified form of the invention, in which a solenoid is employed insteadofa motor;

Fig. 20 is a similar fragmentary view showing the parts of the embodiment of Fig. 19 in a different position of adjustment;

Fig. 21 is a diagrammatic view of the selector illustrated in Figs. 1 to 14 inclusive, provided with a'coin controlled mechanism in the remote selector unit;

Fig; 21 is a sectional detail taken on the line 2|* --2l of Fig. 21;

Fig; 22 'isa diagrammatic view showing amodified;for,m of coin control Fig. 23is.a plan view showing a modified form of the. invention, employing a solenoid and escapement drive;

Fig; 24 is an'elevational view, partly. in section, showing. the drive elements of'Fig. 23

Fig. 25 is a diagrammatic view showing the mannerin which my improved selector isadapted to another automatic phonograph;

Fig. 26isa diagrammatic view showing in perspective part of thestructural elements of the system shown in Fig: 25;

Fig. 27 is a fragmentary view of certain elementsshown-in Fig. 26,.and illustrating themanner inwhich the impulseswitch is closed and the actuated pin. returnedto normal position;

Fig. 28-is a diagrammatic view showing a modified form of selector in which an element moves successively in one,direction. and in the other direction,.controliing a phonograph of the type illustrateddiagrammatically in Fig. 25;

Fig. 29 is a fragmentary elevational' view illustrating eemodification of the embodiment of the invention illustrated .in-Fig. 28;

Fig. 30-is a diagrammatic view of another embodiment of the present invention illustrating a different type of synchronizing apparatus; and

Fig. 31 isa diagrammatic representation ofthe electrical connections of a portion of the apparatus shown in Fig. 30.

Referring to-the drawings, Fig. 1 illustrates the chassis of a knownautomatic phonograph, manufactured by the J. P. Seeburg Corporation, which is disclosed in detail in Carl G; Freborg PatentNo. 2 231139,- dated April'l, 1941, and Carl G. Fr-eborg et al. Patent No. 2,243,698, dated-May 27, 1941. The machine about to be-described and inzconjunction with which the present invention is shown, is-best illustrated in Patent No. 2,237,139 and it corresponds particularly to the embodiment illustrated in Figs. 14, 15 and 16 of this patent, which embodiment is a modification i1- lustrated in-Figs. 1 to 13, inclusive, of the patent. Inasmuchv as the details of construction and operation may be found in the said. patents, only such description of the apparatus as is deemed necessary for a clear understandin of the present invention is included herein. This machine in. general comprises a plurality of slidably mounted and apertured record carriers 59, which are adapted to be translated individually from the right to the left for playing, by means of a reciprocable carriage 4|. The carriage i! is provided. with a plurality of record carrier enga. ing means 42, there being one such means for each record carrier. The engagement of one'of the record carrier engaging means 52 with its associated carrier 40 is controlled by an assembly of arms 43-which are mounted so as to project outwardly from a vertical shaft 44. The arms 43 are arranged at various heights so that each is adapted to engage one of the record carrier engaging means 42. For this purpose, the arms 43 are arranged on the shaft 44 in helical fashion so that only one of the arms 43, in any particular position of the shaft 44, is able to engage its associated carrier engaging means 42. A more detailed description of this apparatus may be found in the above mentioned. Patent No. 2,237,139.

The phonograph comprises a turntable 45, which is adapted to be raised into its full line position in Fig. 1, that is, a position above the level of the stack of record carriers 45, and to be moved downwardly into a position below the level of the stack of record carriers 48. The shaft 46 of the turntable passes freely through a turntable driving gear 41. When the turntable is in its uppermost position, the gear 41 is operatively connected to the shaft .5 by a clutch 51 including a member secured to shaft and adapted to be connected to gear 41, as clearly set forth in said Patent No. 2,237,139. The lower end of the shaft 45 is supported by a bearing 48 operatively connected to and movable with the shaft, and to g.

which an arm 49 is connected by a link 56. The arm 49 is biased upwardly by a strong spring 5| connected to the arm. The arm 49 is connected by a link 52 to an arm 53, pivotally mounted on the chassis. The arm 53 carries a roller 54, which is adapted to cooperate with a cam 55 mounted on the cam shaft 55, which extends across the chassis. It will be understood that when the cam 55 rotates from the position shown in Fig. 1, the arm 53, link 52, and arm 49 will be moved downwardly against the tension of the spring 5|, and that the turntable 45 will be moved to its lowermost position, below the level of the stack of record carriers 45. During the latter part of a complete revolution of the cam 55, the turntable 45 will be moved up by the spring 5| to its uppermost position, in which it is shown in Fig. 1.

The cam shaft 56 carries an arm 58, which is connected through pin 59 and spring 55 to a link 6|. The link 6| is pivotally connected at 6 |-A to the carriage 4|, so that this carriage is caused to move to the right and back to the left during each revolution of the cam shaft 56. The pin 59 is located in a slot 62 in the link 6| to provide for lost motion at the left hand position of the carriage 4|.

The cam shaft 55 carries a cam 63, which is adapted to cooperate with a roller 64. The roller 64 is carried by an arm 55, which depends from a link 55. The link 55 is supported at one end by a pin 61, carried by the chassis, this pin extending through a slot 68 at one end of the link 65. The opposite end of the link 56 is connected to a toothed sector 59, which is pivotally mounted on the chassis, and engages a pinion E5 on ashaft "H. The shaft carries a bevel gear 72, which meshes with a bevel gear 13 on the shaft 44. The link 65 is biased to the left, as viewed in Fig. 1. by a spring 14 suitably connected to the link and the chassis. The pinion It is freely mounted on the shaft H and is engaged by a dog 84 carried by a plate 85 (Fig. 3) also free on the shaft H.

tion. If the shaft H is held against rotation, the clutch member 86 slips on the boss 81. When the link 66 moves in the opposite direction, that is, toward the left, as viewed in Fig. 1, the sector 69 merely rotates the pinion 10, this pinion slipping past the dog 84 during this reverse movement. The shafts 44 and H are held against rotation, when the carriage is at the right end and the desired carrier is to be selected, and the parts are properly positioned by the engagement of an abutment member 88 on the carriage 4! with a roller 89 on an arm 90 (Fig. 2). The arm 90 carries a roller 9|, which engages any one of the notches 92A of a notched wheel 92, which is rigidly mounted on the shaft 44. The wheel 92 has a peripheral series of uniformly spaced notches 92--A which correspond in number to the arms 43. After the carriage 4| has moved to the left, as viewed in Fig. 2, carrying with it a record carrier, the roller BI is ineffective to hold the shafts 44 and II against rotation.

The cam 63 and associated parts are arranged so that on each revolution of the cam shaft 56, the shaft 44 is given a complete revolution. In the machine disclosed in the aforesaid Patent No. 2,237,139, the shaft 44 is given a complete revolution and an additional angular movement corresponding to the angle between two adjacent arms 43. This same degree of rotation may be used in the present embodiment, although as actually shown, the cam 63 is arranged to give the shaft 44 a complete revolution for each rotation of the cam shaft 56.

The machine is operated by a motor 15. When the motor 15 is operating, the gear 4! is driven continuously by means of a worm It on a shaft ll coupled to the shaft of the motor. The cam shaft 55 is operated periodically from the motor through a gear 18 (shown only diagrammatical- 1y), which is driven by a worm gear (not shown) actuated by the shaft ll. Clutch means (also not shown) controlled by a latch arm 19 connect said worm gear to the shaft ii. The latch arm 79 is held in declutching position during playing of a record by means of a latch member 80. The latch arm 58 is actuated by player arm trip means 3%, carried by a shaft 32, to effect release of the latch as. The shaft Eli. serves as a pivotal mounting for the player arm 33. When the arm 83 moves inwardly to a sufficient degree toward the center of the record, or when the arm 83 is subjected to an oscillatory movement due to an eccentric groove at the center of the record, the member 5! releases the latch #35 so that rotation of the cam shaft 56 ensues. Means (not shown) are provided on the cam shaft for effecting the relatching of the latch arln it at the end of one revolution. The cam shaft 55 also carries a cam which is adapted to swing the tone arm mounting shaft 32 back to initial playing position.

The machine, as thus far described, operates continuously as long as the motor 15 is running. If the turntable is in the position in which it is shown in Fig. 1 and the motor is started, the turntable 45 moves downwardly and at the same time the link E55 begins its movement towards the right, so as to rotate the shaft 44 through at least one revolution. The carriage 4| moves to the right returns the record carrier 44 in the out position back intothe stack. When the carriage 4| thus moves to the right, one of its record carrier engaging means 4-2 is caused to, en gage its record carried with the aid of the particular arm 43, which is directed away from the observer, as viewed in Fig. 1. The carriage 4| 'then"=moves to' lthe i left, carryingawith it thereoi ord-carrier which has been thus engaged by one of 'the :recoi'd' :ca'r rier -.engaging 1 means 42 When thercarriage M has transportedthe record car- Trier with the record "supported -thereon-i 'overan rapertured portion thereof-to" its extreme left position, aswiewedin'Fig: 1, the turntable moves upwardly; passingthrough the aperturem the record carrier"- and receiving the record irom-that carrier, which record is elevated-until it engages vthe ickup needle. The turntable is' now in rofltation and-playing or the record begins. When the turntable is'elevated to'its highest position,

'theiatch arm "i9 is'lat'ched out and the rotation of' the cam shai't fifistops. When the record is "-completely'played, the' tone arm "releases the latclrarm' ii-and thecycle isrepeated. The turntable"'45, moving downwardly; returns the played "recoi'dto its carrier, which car'rier returned i-to the staok,'=wherl the carrier ti moves again to the right. lnthe'symphonola'as1nanufac- -tured;"the" camcorresponding to the cam' 63 does T not become" effective until the turntable is moved down to its extreme 'position and thecarria-ge far described, in an automatic phonograph com-- prisinga member, the shaft :14, which has a pinrality of positions, each determinative of a rec- -ord to be played.

Upon the shaft 44, immediately below the --wnee1 92, I rigidly mount a latch disc 93 provided with a' series of peripheral rectangular recesses 93A corresponding in number and position to l the arms 43. I pivotally mount upon the chassis -of. the'machine a latch arm e4, which is provided :with a tooth 95, adapted to enter any one of said recesses, as best shown in Fig. 2. The latch Q i is 'provided'vl ith a detent Qtywhiclris adapted to be engaged with the armature 95- of a relay- 9'5 so uasto hold the latch 94 in unlatehed position.

.Rigidly connected to the latch 94 is an arm $55,

which is adapted to be engaged by the carriage :24! when it moves to its extreme ri ht hand position (which is somewhat farther to the rightthan :wshown in Fig. 2). When the arm 93 is thus moved,.the latch 94 is swung to the right, as

*viewed in Fig. 2, and is heldin disengaged posisitiorrby the armature of the relay 9'! until that a'relay is energized. A' leaf switch 99, including 'two blades, one of which is movable by latch member 94, is adapted to cooperate with the latch imember" 94. This switch is open when the latch illis'disengaged and is closed whenever the latch 94 is in latching relation with the latch wheel 93,

was shown in Fig." 2.

Means are provided whereby a series of imxx p'ulses are created during the rotation of the .i'shaft M. 1T0 obtain these impulses'I may con- ".veniently employ the notched wheel-92as an opserating means. Zhis wheel engages apiece ofin- :sula'tion lllflmounted upon an insulated arm lill,

' which. "is pivotally smountedon? the 'chassi f by 1 means of a suitable bracket ltli- -A. .The a1m sul'ated' from the chassis.

.191 is provided-with a contact'- )2, which is adapted to engage and disengage'contact IGB in- Thearm i0! is biased bya spring (not shown) aroundits'pivot sothat the'piece of insulation I03 bearsagain'st-the'pe- "riphery of the wheel92. When a projection of this wheel engages the'piece of insulation -'ill0 -the contacts I02 and-I03 are separated; whenjhow- .ever, the piece of -insulation ltlilimoves intoa recess of the wheel- 92; the contact 182 engages 'the contact I63. Consequently, if the shaft is'rotated through an angle corresponding toa'certain number ofarms' 43, then the contacts I62 and IE3 will engage that number-of times; so that a. corresponding. number of impulses will pass through the circuit in which the contacts '5 H2 and I (i3 are located.

As a suitable'place on thechassis- I-"-m0unt a transformer HM and a relay 165; the circuit. con- ..nections for which and functions ofwhich will be described'in' greater detail hereinafter. At a suitable position'on the cam shaft 56 is mounted an arm I06, which is adapted to open a switch iii! at the position of the turntable in which' it is desired to terminate playing. The preferred position is just when the-turntable-has' begun to .move downwardly after the playing ofa record.

the phonograph or which-may be" located at any suitable distance therefrom, being connected thereto by suitable wires; as will hereafter beexplained. My improved selector is capable ofbeing operated by a plurality -ofremote 'control units, to be described shortly, iith-or without a unit on the cabinet of the phonograph. Selector elements above described are includedin'the low er portion of 'Fig; 21. In this figure; the reference numeral 598' (including conductors $3,- 1 95, I 96 and 59'!) indicates a cable of-any desired length, whereby the elements of' the selector, which are to be described, may be connected to the phonograph device described above. This figure also showsa similar cable" |es'- (including four conductors. branching out fromthe '-four specified conductors included in cable I68); showing the manner in which any numberof-control units (the two illustrated being indicated by reference characters A and B) may DeCOIIIIBCtEd to the phonograph. Beforedescribing- Fig. 21*in detail, the remainder of the selector elements will be described in connection with the illustrations of their physical elementsymore particularly with reference to Figs. 4 to 14.

Referring particularly to Fig. 4, which illustrates a remote control unit which is adapted to be mounted on the cabinet of the phonograph, the reference numeral I09 designates a panel on which are mounted a'suitable numberof buttons Iii! corresponding to the-number-of selections and the number of arms 43. Aswill hereinafter appear, each one of these buttons corresponds to one particular arm 43. and'can' be employe'dto effect the location of that particular'nrmW3 in cooperative relation with the record carrier engaging means 42 to result in the reproductiontof the correspondingrecording. 'The*-buttons i it have associated therewith cardholding'poeket means" I! i, which are-adapted to' receive cards 9* bearing the titles of the recordings corresponding to the individual buttons I I6. In addition to the buttons H6, there is provided a clearing button H2. As will hereinafter appear, any desired number of the buttons Iii) may be pushed inwardly for selection of the corresponding recordings. The button I I2 may be pushed in momentarily for the purpose of returning the buttons III] to their normal outward position without the reproduction of the associated recordings.

Rigidly secured to the panel I29 are frame plates H3 and H4. Rigidly mounted on the plate II 3 is a post H6 which projects backward and forward and is located in substantial alignment with the center of the circle formed by the buttons H6. The post II5 provides pivotal mountings for the disc H6. located forwardly of the plate II3, and for a disc II'I, located rearwardly of the plate H3. The disc H6 is provided with a circumferential series of notches I I8 (Fig. 6) corresponding in number and spacing to the buttons III). The plate H3 is provided with a similar series of rectangular openings H9. The disc II'I is provided with acorresponding series of projections I26, between which the disc is provided with recesses I2I. In normal condition, the openings H9 and the projections I20 are in alignment, as shown in the. right hand side of Fig. 6. Each of the buttons III] is mounted on the outer end of a pin I22, which pins extend through the peripheral notches II8 of the disc I I6 and the openings II9 of the plate i I3, these pins being normally alignment with the projections I 20. The disc I I6 is biased in the clockwise direction, as viewed in Fig. 6, by means of a spring I23 (Fig. 5)", so that one of the edges of each of the notches IIS bears up against its associated pin I22 in the manner shown in the lower left hand corner of Fig. 6. Each pin I22 is provided with a reduced portion I24 adjacent its forward end. Normally, these reduced portions are in alignment with the plate I I8, as best seen in Fig. 5. Forwardly of the reduced portion I24, each pin I22 is provided with a conical formation I25. It will readily be understood that when any one button I II] is pushed inwardly, the conical cam formation I25 moves along its associated notch H3 so that the disc H6 is rotated counter-clockwise, as viewed in Fig. 6, by pushing in any one of the buttons H6. Of course, any number of buttons H6 may be pushed inwardly without effecting any additional displacement of the disc IE6. This displacement of the disc IIB opens the switch I26, which is carried by the plate H3, the disc H6 being arranged when displaced to effect movement of a switch member, as best shown in Fig. 5. When all buttons are released and returned to initial position, in a manner which will hereinafter be described, the switch I26 closes.

Each pin I22 has a reduced terminal portion I27, which normally rests against a projection I26 of the disc I IT, in the manner shown at the upper end of Fig. 5 and in Fig. 6. Each pin I22 is biased centrall and forwardly by a spring I28. Forwardly of the reduced terminal portion I 21,

each pin I22 is provided with a conical cam for-.

mation I29, and forwardly of the cam portion I26, each pin is provided with an annular recess I36. When a pin I22 is pressed inwardly, the cam formation I29 slips over the projection I26 of the disc III, and this projection enters the recess I26 in the manner shown in the lower part of Fig. 5. It may here be noted that the openings' H9 are elongated in the radial direction so as to permit the necessary outward movement of the pin 122, which is necessary for the conicalformation I29 to move past the projection I20. It will be understood that when a pin I22 is pressed inwardly in the manner shown in the lower part of Fig; 5, it will be held in that position until it is released. It may be released by being pushed outwardly, that is, away from the center, whereupon the spring I28 will draw the It may also be released, together with all other pins I22, which may have an in pin forwardly.

ward position, by pushing the button II2. As best seen in Fig. 5, the button H2 is carried on the outerend of areleasing pin- I3!A, which is biased outwardly b a spring I3I (Fig. 5). The

pin I36A extends through an opening I32 in the plate H3. This pin has a reduced portion I33 at its rear end. This reduced portion is normally in engagement with one arm of a bell. crank lever I34,-pivotally mounted at I34-A on the plate H3, the other end of which carries a pin I35 projecting through a radial slot I36 (see Fig. 6) in the disc III. The disc III is biasedin the counter-clockwise direction, as viewed in Fig..

6, by a spring I31, secured to the disc Hi and to the place H3, so that the bell crank lever I34 wise direction, as viewed in Fig. 6, and the disc III is rotated in the opposite direction so that the projections I20 are moved out of the recesses I36 of any pins which are held inwardly, so that these pins are released and drawn forwardly by the springs I28.

Upon the plate I I4 is mounted a bearing I39 for a shaft I40, which shaft is arranged in alignment with the axes of the discs I I6 and III. Rigidly secured upon the shaft I40 are a gear MI and an I w V The shaft I46 is I held in mounted relation by means of a collar I43.

arm I42 of insulating material.

At the outer end of the arm I42 is pivotally mounted a shaft I44 (see Fig. 6). I On the rear side, the shaft I44 rigidly carries a bridge member I45, which is always in frictional engagement with a contact I 46 mounted on the arm I42.

contact I46 is grounded, as indicated in Fig. 21.

On the forward side of the arm I42, the shaft I44, J

carries a dog I41 which is adapted to engage the pins I22 as the arm rotates.

I 4'1 comprises a. forward pin engaging portion I48 and a rear pin engaging portion I49. pin engaging portion I48 is of cam formation and it is arranged to engage with the rear end I2I of engagement with a contact I50 so that the contact I52 is grounded through the bridge contact I and the grounded contact I46.

5 and 10. 'When the dog I41 is rotatedin the clockwise direction. as viewed in Fig. 6, by 00- When the button The The arm I42 rotates in the clockwise direction, as viewed from the rear, thatis, asviewed in Fig. 6. The dog 1 The The rear pin engaging portion I49 is arranged so that it is able to contact the end portion I21 of any of the pins I22, irrespective of whether these pins are pushed inwardly or are in normal position. For this purpose, the pin engaging portions I iBand I49 are in displaced relation, as best seen inFigs.

adjacent the shaft I44 in Fig. 6. The pin engaging portion I49 is provided with a cam formationsothat the engagementwith this pin causes the dog; I47 to return into its position shown in Fig. orelative to the arm I42. It will be understood that this return is effected before the arm Niches-moved so. as to engage the next pin in the; event that thatpin has been pressed in-, w r ly. The pin engaging portions I48 and I49 of the dog I4'I are employed so that the bridge contact. I45 may engage the contact I50 for the greatest, possible'portion of the total travel of the arm.I,42*between any pin;I22. and the rearwardly adjacent pin I22. In view of the employment of alternating .currentto energize the relay 91 at...the..phonograph, aswell. as the relay I80 at the-"selector. unit, a timeof contact. sufficient for. thesalternating currentito pass through itspeak value atqleast. once is desired. Thus, by causing thecontacts I45 and I5n.:to be in engagement for the greatest possible portion of the movement of arm; I42; a faster operationof arm I42 is possible, while still providing a sufiiciently longperiod of contact fOr proper energization of the relays.

As. will hereinafter appear, the arm I42 is adapted to move step by step, corresponding to the distance of one pin to. the other. These movements are in the same direction. For the sake of clarity, ashort description of the movement of the arm I42, independent of the rest of the mechanism,-is now given.

Assuming that thedog- I41 is in the position in which it is shown in Fig. 6 and the'arm I42 begins to move, then the portion I48 of the-dog will pass all thepins which have-not beenractuated or pushed 'inwardly. The pin engaging portion I49- also' clears all-the pins-I22: When-the-forwardpin engaging portion I48-arrives"at-a--pin- I22 which has been pressedinwardly, it engages that'pin and the dog I4] is rotated slightly in the clockwise direction, as viewed in Fig. 6, into the-position shown in- Fig. 7. This position isdetermined: by a pin and slot connection I 5-I between-the-dog I4'I'-and-the arm I42. When the dog--I-4-I is-moved intotheposition shown in'Fig. 7, the rear pin engaging portion- I49is-moved outwardly between the first and second pins be-- hindtheactuated pin. The displacement of the dog-I41 grounds-the contact 'I50in-the manner previously described.- The continued movement of the arm I42 causes-the forward; pinengagingportion M8 to move-the actuated pin I22 radially outwardly; as shown in Fig; 7." This outward movement of thepin- I22 disengages'the pin fromthe-disc II-I so that thespring I28 connected to that; pin moves itforwardly into its initial position, being theposition in which the uppermost pin-I22 is shown in Fig. 5. As the arm I42 continues to move fromits position shown in Fig. 7 into its position shown in- Fig. 8; the rear pin engagingportion I49 engages the pin I22 rearward" of the pin I22 which had been actuated; and consequently the dog 'lfl'l'ls swung in the counterclockwise direction, as viewed in Figs. 6, '7, and-8, until it attains the position showninFig."8. This movement of'the dog I4! breakstheengagement between contacts I50 and I45.v The arm I42 moves' to; a slight extent into the position in which it is shown in.,Fig. 6, and itremains in this position until the record... corresponding to the.

actuated pin has been played. The arm I42 is driven stepwise. by means of a motor I52. shaft I 53 of the motor I52 is. provided with a. definite amount of end play and is so arranged that the shaft I53 is moved to the right, as. viewed in Fig. 5, when the motor. is energized. One. of the arms of they closing a switch. I54. switch is arranged to serve as a spring, normally biasing the shaft in theopposite direction; that is, towards the left, as viewed in Fig. 5. This arm is insulated from the shaft by insulating material I54 A (Fig. 5). The shaft I53 carries a pinion I55. adjacent its leftv hand extremity, which is designated I56. The pinion I55 meshes with a gear I51 which is rotatably mounted upon a shaft I58,.-mounte,don the plate H4. The gear I5! is frictionally, attached to a pinion I50 which meshes with the. gear hill. The gear ratios are such that. one-half revolution of. the gear I57 corresponds to the movement of the arm I42 through-a distance corresponding to the distance between.- the two adjacentipins I22. The pinion I59;carries two'diametrically opposed radial arms IBfl-whichare adapted alternately to engage the end; I56 of theshaft I53 when it is in its left handposition, as shownin Fig. 5. When the shaft- I 53 is moved to the right, as viewed in this figure, the end I55 of. the shaft I53-is out of the path of an arm, I 60. motor I52. isv de-energized, the end I56 of the shaft. moves to the left, as a result of the deenergization and previously mentioned end play,

int/01.5116 path of movement of an arm I60 so as to arrest the-pinion- I59 at the end of half a revolution. The gear I5! is mounted relative to the arms I60 and the pinion I59 by means of a friction slippage, it being frictionally held between the pinion and the arms which are carried by thepinion. Thus, the gear I51 and the pinion I55 may rotate a short distance as a result of this slippage when an arm I60 is held immovable by engagement with the end I56 of the shaft I53. This avoids any large strain on the mechanism as a result of the inertia of the motor armature when an arm I60 is suddenly stopped. When the motor- I52 is again energized, the end I55 of the'shaft I53 is moved to the right, as viewed in Fig. 5, to move the shaft out of the path of movement ofarms I60 so that the pinion I59 ma be again driven by the motor. If desired, additional means may be provided for ensuring that the pinion I59-will be arrested at a definite position. For this purpose, I secure for rotation with the pinion I59 a cam member I6I which is adapted during each revolution tomove an arm I62 rearwardly toward the motor. The arm I62 is mounted on a bracket I63 suitably secured to frame plate II4 so that its movement is frictionally resisted and that the arm remains in any position in which it is moved. The arm I62 carries a projection I64 in alignment with the shaft I53 of the motor I52.. When the motor I52 is energized for a period sufiicient to cause a half revolution of the pinion I59, the shaft I53 moves to the right, as viewed in Fig. 5. During this half revolution, the cam I6I engages the arm I62 and pushes its projection, I64 towards the shaft of the motor, thus bringing the projection I64 into the path of the arms I60 alternately. When the motor I 52 is de-energized, the shaft I 53 moves outwardly to the left, asviewed in Fig. 5, thus moving the projection I64 and the arm. I62 outwardly away from the, motor- Thus, in. any

The.

Consequently, when the event,the arms I60 alternately engage and are arrested by the projection I64 or the end I56 of the shaft I53. Consequently, if the motor is not de-energized exactl at the right instant, the gear I51 will nevertheless receive only a half revolution. The projection I64 being moved to the left, as viewed in Fig. 5, when the motor I52 is deenergized, and the shaft I53 moving to the right, as viewed in Fig. 5 when the motor is again energized, the arms I69 are free to move when the motor again begins to operate. Thus, the arm I62 and projection I64 act as an additional means of limiting the travel of the pinion I59 to onehalf revolution each time the motor I52 is energized, as they operate mechanically and independently of the energization of the motor and the consequent position of the motor shaft. The unit shown in Fig. 4 is provided with coin chutes I65, I66, and I61, which may be three in number, adapted to receive coins of different denominations, such as nickels, dimes, and quarters. Arms (Fig. 21) I68 extend into these coin chutes. Arm I68I extends into coin chutes I65, I66 and I61, arm I68--2 extends into coin chutes I66 and I61; and the other three arms I683 extend into coin chute I61 only. The arms I68 are carried upon a light hollow shaft I69, preferably of aluminum, which is axially mounted. A light spring I angularly biases the shaft I69 and the arms I68. The latter extend through suitable slots in the coin chutes into the path of the coins descending through the chutes. The shaft I69 carries an escapement I1I which comprises two detents I12 and I13. In the normal position of the arms I68, the detent I12 is engaged by one of the teeth of a ratchet wheel I14, which is biased for rotation in the counterclockwise direction, as viewed in Fig. 21, by means of a spring I15. The detents I12 and I13 are located in angular relation relative to the axis of the shaft I69. When a coin is dropped down one of the chutes, the shaft I69 is angularly displaced against the bias of spring I18 from its normal position one or more times, depending upon the chute employed and the number of arms I68 engaged b the coin. Each displacement effects the withdrawal of the detent I12 out of engagement with the ratchet wheel I14 and the introduction of the detent I13 into alignment with the next tooth of the ratchet wheel (Fig. 21 When the shaft I69 resumes normal position after each such displacement, the detent I13 is withdrawn from the ratchet wheel I14 and the detent I12 is introduced into alignment with the ratchet wheel I14 so that it engages the next tooth. Consequently, if a coin is inserted in the chute I65, the ratchet wheel will move one tooth in the counter-lockwise direction, as viewed in Fig. 21. If a coin is inserted through chute I66, the ratchet wheel I14 will be displaced two teeth. If a coin is inserted in chute I61, the ratchet wheel I14 will be displaced five teeth.

In initial position of the ratchet wheel I14, a pin I16 is in engagement with an arm I11 which holds switches I18 and I19 open, as shown in Fig. 21. When the ratchet wheel I14 is displaced in the counter-clockwise direction, as viewed in Fig. 21, from this initial position, the switches I18 and I19 are closed. The ratchet wheel I14 is returned step by step to its initial position by means of a relay I80. The armature of the relay I88 is connected by means of two link members I8l and I82 to a flat spring I83 which is nor- .mally located against a plate member I84. 7 When the relay I is de-energized, thespring I83 and 1 the spring I83 move the link members I8I and I82 into a position clear of the ratchet wheel I14. When the relay I80 is energized, the downward movement of its armature brings the link mem-.

rection, as viewed in Fig. 21, the lower end of.

the shaft I69 is supported on a pin I86, the lower end of which abuts against a stationary abutment I-81 located therebelow. The upper end of the pin I86 can move away from the ratchet wheel I14, it being guided in a slot I88 in a stationary plate I89. The upper end of the pin I86 is biased towards the ratchet wheel I14 by means of a light spring I90. Consequently, when the ratchet wheel I14 is rotated in the clockwise direction, as viewed in Fig. 21, the lower end of the shaft I69 moves outwardly to allow the tooth of the ratchet wheel I14 to pass.

It is desirable that the springs I19, I98, I15, I83, and I83 should be of small tension so as to reducethe amount of power necessary to operate the respective mechanisms. I have found that by making the parts associated with these springs of correspondingly light weight or small mass,

the natural period of vibration of the system composed of the springs and their associated parts can be kept short. Thus the parts are not likely to respond to heavy impulses of low frequency, such as a kick or a jar. It will be appreciated that these mechanisms should be non-responsive to any ordinary disturbance which the device might encounter so that no external shocks can cause the operation of the device without the dropping of coins and so that such external forces will in no other way affect the desired operation. Thus, if the parts I68, I69, I11, I12, I13, and I86 are made very light and such mass as they have is kept close to the axis around which they swing or move, the resonant system composed of these parts, together with the springs I16 and I99, will have a high natural frequency and therefore will not respond readily to any ordinary external influence. The parts I8I, I82, the armature of the relay I86, and the ratchet wheel I14 should also be light relative to the springs I83, I83, and I15, for the same reason.

Immediately each tooth of the ratchet wheel i14 passes the detent I12, the lower end of the shaft I69 is moved inwardly towards the ratchet wheel I14 so as to hold the ratchet wheel in its new position.

Power is supplied to the device from power lines I96 and I9I, which are connected to the primary of the transformer I94 and also to the motor 15. In one of the motor leads (the one connected to line I96) is the switch I92. One side of the secondary of the transformer is connected to the relay 91, to the relay I85, to one side of switch 99, and to the arm I6! which carries the contact I92. The other side of the secondary of the transformer I84 is grounded and is connected through a conductor I93 in the cable I88 to a grounded conductor I94, which is connected to one terminal of the motor I52.

The other side of the relay 9! is connected to the other side of the switch 99 and also through a conductor I in thecable I68 to one side of the relay, I 80. The other side of the relay I05 is con ass igs ma 1 nectedtd 'i'one fsideaof theiswitch zllltiand iSJEZISOZ connected-1 throughra :cenductor-f I96 in. theicable:

I08 to one si'de ofdswitch M95. The. other side of:

the ESWitCh' -I EQL'lS grounded; Thecontact. I03 :is.

adaptedto be fengagedibythe :contact I92 and is:-

connccted throughza conductor I 9.? .inzithe cable iflsttoithe other terminal ofthe motor 152. The

other-aside of the switch 1| (It \is connected-itszone side rotxwswitch I 538;: the othcniside of :whichuisn grounded:v The switchesilfiziand I98-arenormal- 1y openaand are adaptedlto .be'closed whentthe nectedzto onesideof sy-itch1i25; and .isalso cone. 1

nected .to ianxinsulatedaarm ifii which: bears upon. a conductive ring. 2.96 mounted;on .th'eearm442,: The ring' fl BS =is connected to the contact] The operation isas follows? When the machine .is'at rest,itheaswitch. 101 is openteandithe;.turntable1: l3iis at its uppermost' positiomor "at a position slightly 'below its uppers most .position;. Anyidesired; number of buttons I I6) are moved inwardly. II/OS31E01 t1l8iCO11'SpOIId3-' ingirecords. Actuation of anyiof. the' buttons... opens theswitclr I2iii Coins of corresponding value".are-:insertcdin tone or. more lot. the. chutesv I65; 188, or new. The ratchet wheel xi'i lmoves. to woorresponding extent'in .the 'counter-clock-w wise direction; as viewed in. Fig. 21; so .as to. close the switches l'iiand.ilS; The closing of the switch :.I 'l 8. completes acircuit throughlswitchi I79, conductor I96;xrelay I85; and the secondaryof' the transformer Iii-3. The energization of the re1ay'IB5-"closes switches ISZ'and I981 The clos-' ingrof athe switch- S2 completes the circuit of the motorflE so" that the motor drives the 'cam shaft 55, the controllingclutch being engaged; Shortly afterithe cam shaft has'begurrto move, the switch IQ? closes: The-rotation of the:cam shaft causes: the turntable" 53 'to descend; replacing. itsrecord on the record carrier id; Continuedmovement ofi the-earn shaft causesthe carriageidl to moveto the right to'br-ing the'displaced record carrier into'the staclnzof reeord.:carriers.at'the righthand side of Fig. 1. During the descent of. the turntable andthe movement of the carriage 4| to-.the.right, th'ecanr'6 3 actuates the link :fifito the'right, as viewed in'Fig. 1, causingcthe shaftfli to rotatei' The position of the shafted corresponds to' the position o the arm- M2; and they move step by step in synchronous relation. Thus, at each movement-of thexshaft la-correspondingto the movement'oithis shaft from theefcective positionzof one :arm ltltothe efiective position of the: next. arm lS; the contact-6B2 engages contact I93, thus imparting impulse to the motorIBZ Whichccaus-es it'tozdrive the pinion I59" through a half-revolution; Thishalf revolution is terminated in azmanner previously described. Thus, each: movement of the iflzwhich results in the=-rotation of the wheel 92 through one tooth distancearesults inth movement of the'arm I42 through a? distance corresponding to the distance betweenrtwo'adjacent :-ins 522. Each time the motor #52 receives an impulse, the switch: I54'is closed', but if the dogidi is not iii-engagement with 'a pin I22 which has been pushed inwardly, theclosing; of the sizait-ch' ifi l ha's. noefiect, the switch I26 being open, as a result of one: or more 131115;!22 beingv pushed inwardly, and the contact Idficbeing outof engagement with the contact. I58: Thmcontirrzed rotation of'the shaft 44 results in repeatediengagements betweencon-- tacts'e-I Miami; I a gregating-in repeated impulsesr to the .motor I EZ-and repeated half revolutions 'of the l inion1l59L l/Viiem-however; the dog-1411s brought into engagementuwith a-pin: I22 .whichw has .been: pushed -.in'wardiy;- the-contact |50 is:- grounded and :a circuit is-completed th1-.ougl1 con---.v tacts M6, Hi5;.la'iilringififigarm I99; switch I54, Whichhaslceerr closed .by the operationoffithe: motoigrswitch llag relaycladgiand relay 9T. This occurs when anot-ch'. ofthe latch Wheel193 is com ing opposite .the tooth-.93 offithe-latch arm 94.1. The energization of the relay 8'? releases the latch'-.. arm sozthat the tooth dropsrinto this recess-with theresult cthat thezshaft i is.;held againstrrotas: tions. Thezcontinued rotation of. the cam shaft 561- mayzzmove the .unk 56 :to .th'e;right,. as viewed im-z. Fig; 1,1 so that it. tends .to continueitherotation:of I. theshaitt 44;. This, however; is preventediby slip-i page ofitheclutch; ringMBB :upon .the boss 81, as: previously. described. The shaft 44 is arrestedfin"... any position which cor-responds to, the actuatedca pin l22 :w-hoseactuatiorr has brought. aboutthe: release .of then-latch. arm: 94. Since theshaft M-r no longer 'rotates,.; the .contact 1152 remains; cutoff engagement with the contact H333 and: the motor;- I 52.).(5681V8S110 moreimpulsesx.

Thenenergization of the. relay" I 30, which ihasr just .been referred to, .causes the ;.ratchet. :wheel. I14 to :movez-one :step .in the clockwisexdirectiongi, as viewedin ,Fig. 21;... The .rotation of thencam shaft: continues,-. resulting; in; the: complete.- movementof,jthercafliage- M to the right: and... then toxzthetleft. The-arm 43;. which corresponds. to the rparti'culancpin I22.-.-which.has causedtthez. arrestment of thershaft id; is in position .tocause; theengagement of the correspondinglrecord'carr rier engaging meansAZiwith: the corresponding; record carrier '40;- Consequently this. particular: record is zmovedfinto;alignmentwith the-turntable 45.; Co'ntinuedrotation of-thecam shaft. 56 moves-theturntablefi upwardly so as to:bring; then recordjinto engagement with the needle -.of. theplayer arm; 83. The turntable: 65 .isthen caused .to rotaterby the motor T5;- and the-clutch which controls the actuation of the camshaft-56. is latched out. by, the viatch arm '19,. which is en.- gaged by the; latch arm =86! in. well .known manner.

When .the-rplayinggof the recordzis completed, the inwardposition of. the tone arm 83 or its re verse.-movement,- due to a spiral. or' eccentric groove on.-the--.record,.- releases the latch arm from.1the--latch arm .19: sothat .the' clutch is -re-- engaged andctherecord changing cycleis resumed, to play; the record corresponding to th next ac" utated pirrIEZ whicheis engaged by the dog I41. In this .manner; all. the a'recorols corresponding .to, actuatedqbuttons areeplayed, provided theyhave been paid for by-theinsertionof proper coins.

In the case of thelast recording which has been. paid for, the switchesilfi and Ililare opened im-- mediately the shaft M isdocked against rota-- tion. At thisatime, however,.the: motor. circuit is maintained closed. until. after. the. record; is; played, then-clay 565 being maintained energized;

throughclcsedswitch-Ifiland. closed switch I98..

After this .record .has. been .played :and the. rota-- tion ofthe cam shaft .56 has .begun, theswitch. Ifil'is opened by the arm...I05so that operation of the machine is terminated.

In the event that no selections. are. made and that'th'e switches I18" and I19 are closed by the. insertion-of a'suitable coin or coinsgtheswitch. I26"being closed;' the operationis as follows: i

Initial movement of the shaft 4'4 resultsin' en gagei'nent between the contacts I02 and I03 and a single impulse is given to the motor I52. This impulse to the motor results in the closing of the switch I54 and the completion of a circuit through switch I26, switch I54, switch I 18, relay I 80, and relay 91. Consequently, the detent wheel 93 is latched against further movement at a position corresponding to the next selection. Consequente ly, the machine will play records in succession corresponding in number to the value of the coins inserted. When operating in this manner, the arm I 42 moves step by step, but the'contact I50 remains disconnected from the contact I46, owing to the fact that the dog I41 encounters no actuated pins. e

The relay 91 is in series with the relay I80. It is understood, of course, that a ver large number of relays I89 may be arranged in parallel. In the event that a large number of remote stations select the same recording for playing, then,

when the contacts I45 would move simultaneously into bridging relation with the contacts I50 and I46, the current flowing through the relay 91 would be distributed through all the relays I80 so that they might be insufiiciently energized. Immediately the relay 91 is energized, the switch 99 closes, short-circuiting the relay 91, Consequently, the current flowing through the various relays I80 is no longer limited by the impedance of the relay 91, which is now shortcircuited, thus insuring sufiicient current to operate all the ratchet wheels I14. It should be noted that the contacts 99 are arranged so as to close in the shortest possible length of time after the energization of the relay 91 to supply adequate current to th relays I80 without undue delay.

The efiect of the insertion of one or more coins in one of the chutes I95, I66, I61, of'any of the remote units or the control unit is to close the switches I18, I19. If one remote selector unit is energized by the insertion of coins and another similar unit is not so energized, then in the latter unit there is no connection between conductor I95 and the switch I54. The motors I52 of all the control units move step by step in unison, they all being connected to the lines I94 and I91. The resulting movement of the arm I42 in the unit whichhas not been energized by coins is of no effect as far as selecting is concerned because i the associated switch I18 is open. The closing of the switch I19 by the insertion of one or more coins results in the energization of the relay I05. This relay closes the switch I92 so that the motor is started and is maintained in operation as long as the relay I05 is energized. After the motor has started to operate, the switch I01 closes, and consequently the relay I05 is energized through the switch I98 until all the recordings paid for have been played. The switch I01 is opened mechanically at the end of the playing of each recording. While the ratchet wheel H4 is in credit position, the switch I19 remains closed so that the circuit through the relay I05 is maintained. Before the playing of the last paid for recording, the switch I19 opens, but the circuit of the relay I05 is completed through switches I01 and I98. At the end of the playing of this last paid for recording, the switch I01 opens, the relay I05 is de-energized, and the'switches I92 and I98 are opened so that the motor 15 is rendered inoperative and remains inoperative until a further coin or coins are inserted;

As has been explained before, when a plurality of control or remote stations are provided, the

18 motors I52 move step by step in unison, i-Iowever, only the stations which are energized by coins have any effect in selection. If coins are inserted in one of the units and no selection is made, the switch I26 remains closed, and as a result, the armature I42 and the shaft 44 move one step as a result of the energization of the motors I52. When that first step is completed, the switch I54 closes and the relay I of the selecting unit or units and the relay 91 are energized so that the shaft 44 is located in the position to play the next recording. If a coin or a plurality of coins of higher denomination are placed in the coin chutes, the phonograph will play sequentially, that is, one record being played,

then the next record, then the next record, etc., the pinion I59 rotating degrees between the playing of each recording. When no selections are made, the switch I29 is closed and the relays 91 and I80 are energized when the switch I54 is closed after one actuation of the motor. It may be noted that sequential playing is provided by the use of switches I54 and I26 in circuit between the switch I18 and the arm I99.

In the modification of the invention illustrated in Fig. 22, a single coin chute 20I is provided which is adapted to receive a. suitable number of coins 202 which stack up edgewise in the chute. The lowermost coin is adapted to engage an arm 203 which is pivotally mounted at 204. The arm 203 carries an upturned end 205 which is adapted to close the two switches I18 and I19. The resiliency of the switches is such that a single coin 202 is able to move the arm 203 downwardly into contact with a stop 206, thus closing the switches. When no coin rests on the arm 203, the resiliency of the leaves of the switches I18 and I19 is efiective to open the switches and raise the arm 203 away from the stop 206. The armature of the relay I80 is provided with a nonmetallic coin discharging member 201. As shown in Fig. 22, the member 201 is displaced from the position of the lowermost coin 202. When the relay I80 is energized, its armature moves to the right as viewed in Fig. 22 and the lowermost coin 202 is displaced, i. e., it is knocked out of its indicated position by member 201. The coin engaging member 201 immediately moves away from the position of the lowermost coin and the remaining coins, if any, in the chute 20I move down one step. It will be readily understood that the relation of the switches I18 and I19 and the relay I80 is precisely the same as in the embodiment of the invention illustrated in Fig. 21, and the connections of the four leads are designated by the same numbers as employed in the embodiment shown in Fig. 21.

p In Figs. 15, 16, 17, and 18, I show a modified form of motor unit I52 for driving a shaft I53A. The motor shaft has secured to it a pinion I55 which engages with a gear I51 which is frictionally connected to the pinion I59, in the manner described in connection with the embodiment of the invention shown in Fig. 5. The elements I40, I4 I and I42 may be precisely as described in connection with the aforesaid embodiment and they will not be again described minutely. The shaft 'I53A of the motor I52 is hollow and accommodates in sliding relation a pin 208. This pin is caused to move longitudinally by means of a centrifugal governor 209 mounted on the armature shaft and in remote relation to the pinion I55. The governor comprises a frame portion 2I0 which is mounted on the end of the armature shaft, this frame portion having pivotally mounts

Images