US2029119A

US2029119A - Phonograph mechanism

Info

Publication number: US2029119A
Application number: US614358A
Authority: US
Inventors: Richardson Charles Lepel; Arthur P Holden
Original assignee: NORTON DE WITT H
Current assignee: H NORTON DE WITT; NORTON DE WITT H
Priority date: 1932-05-31
Filing date: 1932-05-31
Publication date: 1936-01-28
Anticipated expiration: 1953-01-28

Description

Jan- 28, 1936- c. l.. RlcHARDsoN ET AL 2,029,119

PHONOGRAPH MECHANI SM Filed May 3l, 1932 Jan 23, 1936 c. L. RICHARDSON ET Al. 2,029,119

PHONOGRAPH MECHANI SM Filed May 3l, 1932 3 Sheets-Sheet 2 Jan- 28, 1935- c. L. RICHARDSON ET AL 2,029,119

PHONOGRAPH MECHANISM Filed May .'51, 1952 3 Sheets-Sheecl 3 UQAC,

Liuc,

@ign-1,0.

65 Inl/enbrs.

Patented Jan. 28, 1936 PATENT OFFICE PHONOGRAPH MECHANISM Charles Lepel Richardson and Arthur P. Holden,

Toronto, Ontario, Canada, assignors to H. Norton De Witt, Toronto, Ontario, Canada Application May 31, 1-932, Serial No. 614,358

19 claims. (o1. 214-17) The principal objects of this invention are to provide a device which will automatically annunciate a pre-arranged series of announcements definitely separating each message by an indennite period regulated by some indeterminate conri dition external to the apparatus whereby the messages will be delivered unexpectedly.

A further and important object is to. devise a machine for projecting messages in amplied form clear from any mechanical or electrical .l disturbance due to the operation of the device and to provide a mechanism in compact form which may be easily placed at desirable points of vantage and which will operate indefinitely without attention, repeating the messages in sequence. I l

A further and extremely important object is to devise such a machine that may be produced in quantities at moderate cost to enable vits being used extensively. 20 The principal features of the invention consist in the novel construction and arrangement of a mechanism whereby an amplifying reproducer is placed in operation in conjunction'wth a phonographic record bearing a plurality of messages of varying length and the phonographic mechanism is started by means arbitrarily controlled and stopped by an electrically controlled mechanism governed by means operatively connected with the reproducermemb'er so that the operation of the phonographic member will be interrupted at predetermined and indefinite intervals.

Still further important features necessary to 35 the successful operation of such a device consist in the novel combination of electrical starting and stopping mechanisms for the motor-driven phonographic device together with operating controls wherebylthe desired results are obtained.

A still furtherand attractive feature of the invention consists in the novel and simple manner of preparing the means for automatically stopping the talking mechanism in arbitrary time periods by the provision of a perforatable contact control and means for effecting the perforation of the control member in accordance with the messages arranged upon the phonographic record. In the accompanying drawings, Figure 1 is a front elevational view of the phonographic reproducer control mechanism showing the reproducer at the commencement end of a record.

Figure 2 is a view similar to Figure 1 showing the arrangement of the parts at the instant of being tripped to return the reproducer to the vstarting place.

Figure 3 is a plan view of the device in the position shown in Figure 1.

Figure 4 is an elevational detail in part section, showing the location and arrangement of the parts with the phonographic reproducer in the position 4-4 of Figure 1.

Figure 5 is a view similar to Figure 4 with the phonographicreproducer in the position 5-5 of Figure 2. l

Figure 6 is a part sectional plan detail of the means for cushioning the reproducer carriage on its return movement. 4

Figure 7 is a vertical sectional detail taken on the line 1 1 of Figure 1.

Figure 8 is an enlarged sectional detail showing the arrangement of the contact in relation to the control disc when in the position as illustrated in Figure 2.

Figure 9 is an enlarged horizontal sectional detail showing the arrangement of the control contact when in the position illustrated in Figure 1.

Figure 10 is a wiring diagram of the apparatus.

In the device herein shown, a base I has mounted thereon a bearing 2 in which is supported the shaft of a phonographic cylinder supporting arbor 3.

A carriage 4 is slidably mounted on a bar 5 extending between the standards 6 and 'I which are rigidly secured to the base.

The carriage 4 is provided with an arm 8 which extends beneath the arbor`3 and has a jaw end 9 which slidably engages a bar I0 arranged parallel with the bar 5 and which is supported at one end in the casing of the bearing 2 and at the other end in a lug II extending upwardly from the base.

Mounted upon the carriage 4is a reproducer I2 which carries a stylus I3 to engage the surface of the record placed upon the arbor.

A feed screw I4 is arranged-below and parallel with the bar 5 and a crescent-shaped member I5 is pivotally mounted mid-way of its length on the arm 8. One end of the member I5 is provided with a threaded surface which forms a half nut and this threaded portion is held in engaging contact with the thread of the feed screw by a tension spring I6.

The upper end of the member I5 engages a feed screw. The other end 2| thereof extends over a rigid bar structure 22 arranged between the

standards

6 and 1 and extending longitudinally of the machine.

A lever 23 is pivotally mounted on a pivot screw 24 secured in the front side of the bar 22 intermediate of its length. The end of this lever projecting toward the standard 6 is provided with a forwardly projecting pin 25 and the otherend of the lever is provided with a latch dog 26 which is engaged by the dog end 21 of a bell crank lever 28 mounted on a pivot screw 29 secured in a lug extension 30 of the bar 22.

The long tail end portion 3l of the lever 28 engages a lug 32 on the lever 23 adjacent to the pivot screw.

A leaf spring 33 secured in the lever 23 engages the pin 34 secured in the front bar 22 to tilt the lever 23 upon the release ofthe latch so that the pin 25 at the opposite end is moved downwardly.

A lever 35 is secured to a pin 36 which is pivotally mounted in an arm 31 of a standard 38 mounted on the base I adjacent to the standard 6. Said lever extends angularly downward and has a long horizontal extension which engages the underside of the pin 25 on the lever 23 so that when the .latch holding the lever 23 in the raised position shown in Figure 1, is released the'spring 33 tilts the lever 23 on its pivot and the lever 35 is swung downwardly to the position shown in Figure 2.

A lug 39 is arranged on the back of the lever 35 and a pivot-al dog 4D loosely mounted on a pivot screw 4I secured in the front bar 22, is adapted, on the depression of the lever 35 to swing over the lug and to prevent the return of the lever 35 to its horizontal position. The dog 40 is provided with an eccentrically arranged weight 42 to cause it to swing into position to intercept the lever 35. The upper end of the dog 40 is 4provided with a pin 43 which extends backwardly over the bar 22. This pin is engaged by a headed rod 44 which is adjustably mounted on the carriage 4, so that when the carriage reaches the limit of inward movement, the dog is swung to clear the lug on the back of the lever 35 allowing the lever to swing upwardly.

A suitable form of spring (not shown) is arranged to normally maintain the lever 35 in the position shown in Figure 1.

The standard 38 has adjustably mounted in its upper end a sleeve member 45 and said sleeve is held in adjusted positions by the set screw 46. This sleeve member 45 forms a bearing for the shaft 41 which has a reduced inner end 48 and a reduced outer end 49.

The inner end of the sleeve 45 is formed with a cup-shaped end in which is housed a helical spring 5|, one end of which is secured in a slot in the cup end of the sleeve and the other end is secured to the end 48 of the shaft 41. Thus the effective tension on the spring 5| may be altered by loosening the set screw 46, rotating the sleeve 45 to a desired position, and again locking by means of the set screw.

A flange drum 52 is secured on the shaft end 41 and abuts the helical spring and cup end 50 and forms an enclosure therefor. The periphery of the drum is formed with a circumferential groove 53 in which is secured one end of a exible metal tape 54, the other end of which is secured to a bracket 55 .forming part of the carriage 4.

It will be understood that as the carriage is moved longitudinally by reason of the operation of its feed screw and its engaging member I 5, the

tape 54 is drawn out and the drum 52 and the shaft 41 are rotated against the tension of the spring 5I, one end of which is fixed in the stationary sleeve member 45. Consequently when the carriage is free from its driving element, namely the feed screw I4, the tension of the spring 5I pulling upon the tape 54, draws the carriage back to its original position close to the standard 6.

Mounted on the outer end 49 of the shaft 41 is a disc 56 provided with a sleeve 51 which is locked thereon by a nut 58 threaded on the shaft end. A disc 59 of corresponding diameter to the disc 56 is mounted on the sleeve 51 and the exterior of the sleeve is threaded and a thumb nut 6|) is threaded thereon clamped against the disc 59.

A thin disc 6I of a paper or fibre insulating material is clamped between the

dises

56 and 59 and projects beyond the perimeter thereof and extends into a U-shaped opening 62 formed between the standard 38 and a bracket 63 projecting forwardly therefrom.

A threaded tubular member 64 having a die orifice in one end thereof is threaded through a threaded hole in the standard 38 opposite to the bracket 63 and a threaded `member 65 having a punch end to co-operate with the die member is threaded in the hole arranged in alignment with the tubular die. These members are used in effecting the perforation of the fibre disc 6I carried by the

discs

55 and 59 and their use will be further described.

'A quadrant plate 66 is rigidly secured to the pivot pin 36 upon which the lever 35 is mounted and is adapted to be swung with the lever and mounted upon the outer side of the quadrant and insulated therefrom and from each other, are a. pair of

thin spring arms

61 and 68 which' are adapted to span the edge of the nbre disc 6| projecting beyond the

discs

59 and 56. These arms are each provided with rounded contact points which engage the surface of the thin disc 6I and where this disc is perforated, these contact points come together to effect the closing of an electric circuit which will be hereinafter described.

The

spring arms

61 and 68 span the disc 6I when the lever 35 is in its raised position, Figure l, but when the lever is depressed by the operation of the lever 23, the

arms

61 and 68 swing clear of the disc 6I and their contacts come together, but when the lever 35 swings further downwardly, Figures 2 and 8, the spring arms are separated by a wedge-shaped pin 69 mounted in the bottom of the U-opening 62 and this pin is electrically grounded as will hereinafter appear.

The quadrant 66 is provided with a spring plunger boltl, the end of which is adapted to extend into a hole in the face plate of the arm 31 on the standard 38, so that the

spring arms

61 and 68 may be held in a downward position clear of the disc 6I when the disc is being perforated by the die and punch

members

64 and 65.

The tail of the lever I8 pivotally mounted on the bar 5 in the slot I9 of the carriage projects over the top of the stationary front bar 22 and when the carriage reaches the limit of its movement in the outward direction and the lever 23 is released by the operation of the latch lever 28 engaged by the pin 4' carried by the carriage, said lever 23 swings the lever I8 upwardlyV tilting the member I5 on its pivot and lifting its threaded nut portion out of engagement with the feed screw. The carriage is thus released and it is immediately drawn back to its original position by the tape 54 being wound upon the drum 52 -through the action of the helical spring 5|.

As the carriage reaches the limit of its return movement the headed rod 44 carried on the carriage engages the pin 43 on the dog 46 swinging said dog clear of the lug 39 on the. lever 35, thus allowing the lever to swing upwardly to bringthe

spring arms

61 and 68 into their co-operative relation with the disc 6|. f

Coincident with the release of the lever 35 by the operation of the dog 48 the end 2| of lever |8 is engaged by an angularly arranged arm 1| which is rigidly mounted on the top of the bar 22 and is thrown downward releasing the half nut member l5 which is drawn downwardly by its operating springv I6 to again engage the feed screw.

It will of course be understood that the action of the helical spring 5| in returning the carriage, will bring the carriage back to its initial position with considerable speed, consequently it is necessary to provide some cushioning means to avoid an undesirable shock when vthe* carriage reaches the limit of its inward or return movement.

Arranged parallel with the bar I8 which supports the jaw end 9 of the arm 8 of the carriage, is a cylinder 12 having a slot 13 in the side wall thereof adjacent to one end.

A piston 14 operating in the cylinder 12 is mounted upon a rod 15 which slides in the end block 16.

An arm 11 secured to the piston rod 15 andextending outwardly through the slot 13 is provided with a forked end 18 which slidably engages the bar |6. v

A rod 19 connects the arm 11 with a block 8 which also slides upon the bar I0. The jaw end 9 of the arm 8 operating with the carriage slides upon the bar I between the block 80 and the arm 11 and as the carriage moves outwardly the jaw end of the arm 8 engages the forked arm moving the piston longitudinally in its cylinder. Upon the disconnection of the carriage from the feed screw in' the outward movement and the return movement of the carriage actuated by the spring the arm 8 slides along the bar I8 and engages the block 88 which is connected by the rod 19 to the arm 11 and the piston rod. The piston is then moved along by the impetus of the carriage and compresses the air within the cylinder. This compressed air is allowed to escape slowly through a small leak hole 8| in the closed end of the cylinder, but the piston operates eiectively as a brake to check the movement of the carriage and slow it down to its final stopping point. Coinoidently the inclined bar 1| engages the lever 8 and effects the lowering of the nut on the member l5 into engagement with the feed screw and also releases the lever |1 to return the stylus into engaging contact with the record cylinder.

The record cylinder is first prepared with any desired number of short messages, such as Good morning! Have you had your iron to-day or desirable advertising matter. The cylinder is then placed upon the arbor and the apparatus is set with the lever 35 depressed and held by the lock pin so that the

spring arms

61 and 68 are clear of the disc 6|. The tubular die isJ then turned in its threaded bearing to abut one side of the disc and the punch is manipulated to punch a hole through the disc, which provides an opening to permit; the

contacts

61 and 68 to engage and close the circuit for starting. The phonograph mechanism is then operated until thefirst message is completed and as the carriage carrylng the reproducer travels endwise through the operation of the feed screw, the tape 54 through members are moved away from the discs, the lock pin is withdrawn and the lever 35 is allowed to resume its normal horizontal position engaging the pin 25 on the lever 23. In this position the

contact arms

61 and 68 are arranged either side of the disc and the contact points thereof make an electrical contact through one of the holes in the disc.

An electric wire is connected to each of these insulated contact arms and one of them leads to an electric relay 82 which is connected through a suitable resistance to ground. The other contact is connected to a control switch 83 which may be connected with any desirable operating device such as the door entering a store. The other terminal of the control switch 83 is connected to the switch arm 84 of the relay 82. This 4switch arm 84 is adapted to connect the. motor M for operating the phonograph device with the source of power, but the circuit to the motor is broken when the relay 82 is energized. Upon the opening of the control switch 83 the relay is deenergized and the spring-actuated switch element 84 operates to close the motor circuit and the reproducer of the phonograph reproduces the message imprinted thereon.

The reproducer I2 which is of the electromagnetic pick-up type, is supported on the carriage 4 and all Vibrations imparted thereto through the operation of the stylus on the surface of the record cylinder, are conducted to an amplifying circuit. Power is supplied to the amplifying circuit from the power line through the leads 85 to a transformer 86, the secondary coils of which are connected with a rectifying tube 81. The amplied vibrations are ultimately transmitted to a suitable loud speaker 88,

Though the details of the amplifying circuit and apparatus are not described their arrangement is common practice in radio amplification.

When the relay is energized the motor is disengaged and one of the contacts of the switch 84 is connected with a short circuit lead 89 to the grid of the power tube 9|] of the amplifier while the other contact of the switch 84 is connected through the lead 9| to ground. This arrangement prevents the transmission of any electrical or mechanical disturbances to the amplifying systern through the operation of the mechanism in the return of the reproducer to the commencement of the record or through any other cause when the motor M is not operating.

In the operation of this device the amplifier unit is arranged in the interior of a small portable case, the cover of which forms the. base of the phonograph structure heretofore described.

After the cylinder record bearing the desired messages has been produced and the regulating dial, formed by the disc 6|, has been perforated with the spacing of the perforations coincidir. with the spacing of the messages upon the cylinder, the device is connected up with the control switch, which, as has been described, may be a door. When the switch 83 is closed and the

contacts

61 and 68 are in electrical engagement riage.

through one of the perforations` in the disc 6l the relay R is energized and the switch 84 holds the motor circuit N open and the amplifier is short circuited as described. the opening of the door or control switch 83 the circuit is broken, the relay releases the switch 8G which is automatically closed starting the motor M into operation and disconnects the short thereby permitting the transmission of the message. Immediately the motor starts into operation the carriage 4 begins to move and the message indited on the cylinder is transmitted through the amplifying means to the loud speaker. Immediately the carriage commences to move it pulls upon the tape 54 rotating the drum 52 and through the connections described, rotates the disc 6l. The rotation of the disc 6l forces the unperforate-d part thereof between the contacts 6l and 68 so that the relay circuit is broken by the disc. Consequently the eventual closing of the control switch 83 will not interfere with the operation of the motor.

The motor continues to operate turning the disc 6I until the next succeeding perforation therein allows the contacts 6l and 66 to come together when the relay is operated to open the motor circuit and stop the motor.

The arrangement of the dies for perforating the disc directly on the machine permits the disc being accurately perforated in accordance with each individual machine, consequently there will be no overlapping or inaccuracy in the stopping of the motor. Therefore the machine in operation speaks out certain definite message and then stops until the motor is again energized by the operation of the control switch.

A great variety of advertising slogans or messages of any desirable nature may be placed upon a phonograph cylinder and a machine arranged in a position to be intermittently operated through some involuntary action and each message will be distinctly announced and when the complete series of messages has been delivered and the carriage reaches the limit of outward movement the lever 28 is tripped through the contact therewith of the pin 4', releasing the levier 23, one end of which moves upwardly to disengage the carriage-operating nut from the feed screw and coincidently the pin 25 on the lever 23 which depresses the lever 35, swings the quadrant 66 downwardly on its pivot and moves the spring arms 6l and 68 away from the disc 6l coincidently bringing said spring arms into engagement with the wedge pin 69 which grounds the circuit through the contacts. Consequently, when the carriage is returning and the disc is rotated by means of the retraction of the spring 5l, there will be no possibility of electrical disturbances being transmitted to the amplifying circuit and loud speaker. Tha-t is to say, the contacts which operate the relay for controlling the motor are moved entirely away from the perforated disc so that no electric impulses will be conveyed therefrom through the amplifying circuit.

The movement of the carriage is automatically checked by the air cushion provided by the cylinder 12 and the piston connected with the car- The lever 35 is held .in its down position by the gravity operated dog 40 until the carriage' moves the rod 44 into contact therewith to swing out of engagement with the lug on the hack of the lever 35.

The pin 4 carried by the downwardly extending lug on the carriage returns the

levers

23 and 35. to their normal position and coincidently the lever I8 holding the feed nut l5 out of contact with the feed screw is engaged by the rigid arm 1I to return the member I5 to its operating position in engagement with the f eed screw and return the stylus into contact with the cylinder.

The various members operate instantaneously in their proper sequence and the device-operates continuously and automatically.

The device is herein shown as applied to the cylinder type of phonograph but it will be readily understood that the various mechanisms may be applied to operate with the disc type of machine without depart'mg from the main principles of the invention as herein set forth.

What We claim as our invention is:

l. In a phonograph mechanism, the combination with a phonograph record and a carriage having a reproducer mounted thereon, of electrically operated means for starting and stopping the phonograph mechanism, and means for automatically stopping the phonograph mechanism at predetermined periods, said means including a spring wound circuit control member operatively connected with said carriage, and having its spring elements tensioned on movement of the carriage in one direction.

2. In a phonograph mechanism, the combination with a phonograph record and a carriage having a reproducer mounted thereon, of Velectrically operated means for starting and stopping the phonograph mechanism, means for automatically stopping the phonograph mechanism at predetermined periods, said means including a control member spring urged in one direction and having a flexible operative connection with the carriage and moved thereby in opposition to the spring influence.l

3. In a phonograph mechanism, the combination with a phonograph record and reproducer, of electrically operated means for starting and stopping the phonograph mechanism, rotatable control means permanently connected with the reproducer and rotated in an advance and reverse direction in unison with the reproducer movements for automatically stopping the phonograph mechanism at predetermined periods, and manually controlled means for arbitrarily starting the phonograph mechanism.

4. In a phonograph mechanism, the combination with a phonograph record and reproducer, of l electrically operated means for starting and stopping the phonograph mechanism, means including a perforated control member permanently connected with the reproducer and operating with an advance and reverse movement in uris`on with the advance and return movements of the reproducer for automatically stopping the phonograph mechanism at predetermined periods, and means for automatically returning the reproducer and said perforated control member to the point of commencement on the record.

5. In a phonograph mechanism, the combination with a phonograph record and reproducer, of electrically operated means for starting and stopping the phonograph mechanism, a perforated insulating member operatively connected with the reproducer, and operated thereby with an advance and return movement in unison with the advance and return movements of the reproducer, and a pair of electric contacts arranged in the electric circuit of the starting and stopping means separated by the movable insulating member connected with the reproducer and vas adapted to contact electrically through the perforations therein.

6. In a phonograph mechanism, the combina- 'tion with a phonograph record having a plurality of individual sound recordings and reproducer, of electrically operated means for starting and stopping the phonograph mechanism, a pair of separable spring contacts included in the electric circuit of the starting and stopping means, and a thin insulating member operatively connected with said reproducer to operate in an advance and reverse direction in unison with the advance and return movements of the reproducer, said insulating member being arranged between and separating said contacts and having perforations therethrough to permit said contacts to engage and make an electrical contact, said perforations being arranged to permit the spring contacts to engage instantaneously with the conclusion of each of the individual sound recordings on the phonograph record.

7. A device as claimed in claim 6, including means for automatically returning said reproducer and said perforated member simultaneously to their commencement position, means for moving said contacts away from said perforated member at the end of the advance movement of the reproducer, and means for automatically returning said contacts to their original position.

8. A device as claimed in claim 6 including spring means for automatically returning said reproducer and said perforated member simultaneously to their commencement position, a pivotal member supporting said spring contacts, means actuated by the movement of the reproducer at one end of its path of movement for swinging said contact carrying lmember on its pivot to move said contacts away from the perforated member, and means actuated by the movement of the reproducer at the other end of its path of movemert for effecting the return of said contact carrying member and its contacts to their normal positions with the contacts spanning the perforated member.

9. In a phonograph mechanism, the combination with a phonograph record and reproducer, of electrically operated means for starting and stopping the phonograph mechanism, a pair of separable spring contacts included in the electric circuit of the starting and stopping means, a rotatable member having a projecting rim of thin insulating material perforated at predetermined intervals and extending between said contacts with the perforations in alignment with points of said contacts, means connecting said reproducer with said rotatable member adapted to rotate same in relation to the travel of the reproducer, and spring means for returning said reproducer and rotatable member simultaneously to their commencement positions.

10. In a phonograph mechanism, the combination with a phonograph record and a reproducer power operated to travel over said record, of electrically operated means for starting and stopping the phonograph mechanism, a pair of spring contacts included in the starting and stopping means, a rotatable member having a rim of thin insulating material extending between and separating said contacts and having perforations arranged at predetermined intervals to permit said contacts to engage and close the circuit, a helical spring xed at one end and connected at its other end to said rotatable member, a drum connected to said rotatable member, a tape secured at one end to said drum andencircling same and secured at its other end to the power driven reproducer, means for automatically releasing said reproducer from its power drive at one end of its travel to permit the spring to return same to its starting position, and means for automatically connecting said reproducer with its power drive at the other end of its travel.

11. A deviceas claimed in claim 10 having means for adjusting the tension of said helical spring.`

12. In a phonograph mechanism, the combination -with a phonograph record and a reproducer power operated to travel over said record, of electrically operated means for starting and stopping the phonograph mechanism, a pair of displaceable spring contacts included in the starting and 13. A device as claimed in claim l2 having an air cylinder arranged parallel to the path of movement of the reproducer, and a piston operating in said cylinder and intermittently connected with said reproducer at predetermined points in its travel.

14. A device as claimed in claim 12, having an air cylinder arranged parallel to the path of movement of the reproducer, a piston operating in said cylinder, a rod exterior to said cylinder and connected with the piston and having a pair of spaced stops thereon, and means connected with said reproducer slidably engaging said rod and adapted to engage said stops to operate said piston for a limited distance at each end of the path of travel of the reproducer. l

l5. In a phonograph, the combination of a record rotating mechanism, a reproducer carriage, a feed screw, a displaceable nut engaging the feed screw to advance said carriage, means for displacing said nut from engagement with the feed screw to terminate the advance movement of the carriage, means for returning the carriage to its starting position, means for returning the nut into engagement with the feed screw at the end of the carriage return movement, electrically controlled means for starting and stopping the record rotating and carriage operating mechanism, means operating in unison with the carriage for controlling said electrically controlled means, means operated by said nut displacing means for disengaging said electrical controlling means on the release of the carriage operating nut from its driving feed screw, and means operated by the carriage on the completion of its return movement for returning said electrical controlling means to its normal operating position.

16. In a phonograph, the combination of a record rotating mechanism, a reproducer carriage, a feed screw, a displaceable nut engaging the feed screw to advance said carriage, means for displacing said nut from engagement with the feed screw to terminate the advance movement of the carriage, means for returning the carriage to its starting position, means for returning the nut into engagement with the feed screw at the end of the carriage return movement, electrically controlled means for startingand stopping the means carried by the latterV lever and normallyy engaging the control means operating in unison with the carriage, means for holding the contact carrying lever with its contacts out of engagement with said control means during the return movement of the carriage, and means on said carriage for releasing said holding means at the completion of the return movement of the carriage.

17. In a phonograph mechanism, the combination with a power operated phonograph record support and a reproducer and a motor for operating same, of an electrically operated relay adapted when energized to direct power to said motor and when de-energized to cut oi the supply of power thereto, an electric circuit connected with said relay, a pair of contacts in said relay circuit, an insulating member operated in unison with the movement of said reproducer and arranged between said contacts and having perforations therein arranged at predetermined intervals corresponding with positions to which the reproducer is moved to permit said contacts to engage and close the relay circuit and energize the relay, and an arbitrarily operable switch in said relay circuit adapted to be temporarily opened to deaoae, i ie energize the relay whereby the motor will operate to move said insulating member and separate said pair of contacts to cause'a continued operation of the motor until the succeeding perforation is moved into register with the contacts to again eiect energizing of the relay and stoppage of the motor.

18. A device as claimed in claim 17 having an electrical sound amplifying circuit connected with the relay switch and closed with the motor actuating movement of the relay switch and retained open when the motor is inoperative.

19. In a phonograph mechanism the combination of a phonograph record having a series of individual sound recordings thereon and a reproducer therefor, electrically operated means for controlling the starting and stopping of the phonograph mechanism, a pair of separable spring contacts controlling the ow of current to said electrically operated means, a thin insulating member operatively connected with said reproducer and displaceable in unison therewith and normally positioned between said spring contacts as a separating agent, said spring contacts being mounted on a pivotal member movably to swing said contacts from theirl normal position to expose the insulating member at such normal position, and means for temporarily holding said pivotal member to retain the contacts out of alignment with their normal position.

CHARLES LEPEL RICHARDSON. ARTHUR P. HOLDEN.

' grr.