US2485575A

US2485575A - Door operated phonographic apparatus

Info

Publication number: US2485575A
Application number: US589017A
Authority: US
Inventors: Elmer O Deaver
Original assignee: Philco Ford Corp
Current assignee: Maxar Space LLC
Priority date: 1945-04-18
Filing date: 1945-04-18
Publication date: 1949-10-25
Anticipated expiration: 1966-10-25
Also published as: GB615991A

Description

Oct. 25, 1949. E. o. DEAVER DOOR OPERATED PHONOGRAPHIC APPARATUS 5 Sheets-Sheet 1 Filed April 18, l945 Oct. 25, 1949. E. o. DEAVER 2,435,575

' DOOR OPERATED PHONOGRAPHIC APPARATUS Filed April 18, 1945 5 Sheets-Sheet 2 Oct. 25, 1949. E. o. DEAVER DOOR OPERATED PHONOGRAPHIC APPARATUS 5 Sheets-Sheet 3 Filed April 18, 1945 Oct. 25, 1949. E. o. DEAVER 2,485,575

DOOR OPERATED PHONOGRAPHIC APPARATUS Filed April 18, 1945 5 Sheets-Sheet 4 Oct. 25, 1949. E. o. DEAVER DOOR OPERATED PHONOGRAPHIC APPARATUS 5 Sheets-Sheet 5 Filed April 18, 1945 27/716" @fimer y Mg "5% War/7am;

Patented Oct. 25, 1949 DOOR OPERATED PHONOGRAPHIC APPARATUS Elmer 0. Beaver, Philadelphia, Pa., assignor, by mesne assignments, to Philco Corporation, Philadelphia, Pa., a corporation of Pennsylvania Application April 18, 1945, Serial No. 589,017

2 Claims.

This invention relates to certain improvements in a phonograph apparatus which is adapted to play records successively supplied thereto, without any effort on the part of the user other than the insertion and removal of the records and the operation of a door or like member.

More particularly, the invention relates to certain improvements in a phonograph apparatus of the character disclosed and claimed in a copending application of E. Harman, Serial No. filed April 18, 1945. In such apparatus, there is provided a restricted slot-like opening through which records are inserted and removed, and there is also provided a door or lid which conceals the said opening when in closed position. The user has only to open and close the door, and to insert and remove records, and the operating parts are automatically actuated and controlled in response to these acts on the part of the user. Provision is made for the playing of different sized records without any further effort on the part of the user. This is accomplished by means of a feeler mechanism which conditions the apparatus according to the size of an inserted record.

The principal object of the present invention is to provide certain improvements in a phonograph apparatus of this character.

A more specific object of the invention is to provide a novel cord and pulley arrangement in cooperation with an adjustable stop for actuating and controlling the tone arm in response to movement of a door or like member.

Still another object of the invention is to provide a novel switch operating arrangement by which the turntable is automatically stopped after the playing of a record and is automatically started in response to the closing of the door.

Other objects and features of the invention will be apparent from the following detailed description. In the accompanying drawings,

Fig. 1 is a perspective View of a radio-phonograph combination embodying the improvements of the present invention;

Fig. 2 is a sectional view taken vertically through the same;

Fig. 3 is a horizontal sectional View showing the phonograph apparatus in plan;

Fig. 4 is a perspective view of a slide member which serves to actuate certain parts;

Fig. 5 is a fragmentary perspective view showing the cord and pulley arrangement employed;

Fig. 6 shows the phonograph apparatus in side.

elevation with the door in closed position and with a small sized record on the turntable;

Fig. 'I is a sectional view taken along lines 'l-e'l of Fig. 3 showing the parts in the positions which they assume when the door is opened and a large sized record is inserted;

Fig. 8 is a detailed sectional view showing more clearly the receding spindle arrangement which is preferably employed;

Fig. 9 is a fragmentary plan view of the feeler mechanism;

Fig. 10 is a fragmentary plan view showing the latch member of the same mechanism in a different position than that of Fig. 9;

Fig. 11 is a detail view of the switch mechanism which controls the turntable operation, said view being taken along line H,ll of Fig. 3;

Fig. 12 is a view of the same mechanism taken from the left side of Fig. 11;

Fig. 13 is a plan view of the same mechanism; and

Figs. 14 and 15 are explanatory views showing how the switch is operated;

The phonograph apparatus illustrated in the drawings is similar to one of the embodiments shown in the above-mentioned Harman application. It embodies subject matter claimed in the Harman application and also subject matter claimed in a copending application of E. 0. Thompson, Serial No. 589,019 filed April 18, 1945, as will be pointed out particularly hereinafter.

Referring first to Figs. 1 and 2, the phonograph apparatus is shown embodied in a radiophonograph combination comprising a cabinet I, radio receiver 2 and its associated dial 3 and control knobs 4, phonograph apparatus 5, and loudspeaker 6. The phonograph mechanism is supported by a horizontal shelf or panel 1 within the cabinet. The phonograph tone arm and turntable are shown at 8 and 9, respectively. The phonograph apparatus is inaccessible to the user during operation, and provision is made for the playing of successive records simply by inserting them into a restricted slot-like opening l0 adjacent the turntable 9. To this end, there is provided a front wall member [I which forms a part of the cabinet structure and which has the record-insertion opening I!) therein. A record I2 is shown on the turntable, and it will be noted that the record protrudes from the opening Ill into a recess 13 provided in member H. The purpose of this arrangement is to enable insertion and removal of the record, as will be obvious. Adjacent the recess l3, and hingedly mounted on the outer part of the cabinet, is a manually operable door [4 which occupies the door opening l5 when in closed position. When closed, the door conceals the record insertion opening H and when opened it affords access to the said opening. As previously mentioned, the movement of the door serves to control the tone arm and the turntable.

It will be apparent from Figs. 1 and 2, and from the description thus far, that the phonograph apparatus is fully protected against accidental misuse or abuse, there being no reason for access to the parts since the user is required only to operate the door [4 and to insert and remove records.

While the phonograph apparatus is shown in Figs. 1 and 2 as a part of a radio-phonograph combination, it need not be associated with a radio receiver, as will be wellunderstood.

Referring now to Figs. 3 to 10, these figuresillustrate the mechanism by which the tone arm and turntable are controlled by the door M, and

they also illustrate the mechanism by which the apparatus is adapted to play difierent sized records without any further effort on the part of the user. Asshown most clearly in Fig. 6, the turntable 9 is arranged in relation to the restricted opening I so that the upper surface of the turntable is slightly above the bottom surface of the opening. This permits the record i2 to rotate freely with the turntable. It will be noted also that the door M has a recess to accommodate a larger sized record represented in dot and dash outline at l2. A guide member I I is secured to the wall H and extends therefrom above the turntable as shown. This member may take the form of a strip or plate of. metal or other material, and its purpose is to insure proper insertion of the record, as will be seen later. The record is centered on the turntable by means of a central spindle l6 (Fig. '7) which is automatically retracted in response to opening movement of the door It, as will be described further hereinafter. As shown in Fig. 8 the turntable is supported by means of a bearing structure I! carried by the supporting shelf or panel I. The details of the bearing structure are unimportant except that it may be noted that the record-centering spindle i6 is slidably mounted within the same structure. The turntable is driven in conventional manner (see Fig. 3) by means of a driving friction wheel 58' which is mounted on a pivoted bracket l9 and is maintained in engagement with. the turntable flange by a spring 20, one end of which is attached to the bracket I9 while the other end is secured to a stationary pin 2 l on the supporting panel 1'. The wheel I 8 is driven by a smaller wheel or roller 22 which in turn is suitably driven by the driving motor unit 23.

The tone arm 8 is mounted at the upper end of a spindle 24 (see Fig. 6) which is rotatably supported by a hollow post 25 mounted on the supporting panel 1, so that the tone arm is adapted to move laterally or horizontally with respect to a record on the turntable. The tone arm is pivotally mounted on a horizontal pivot 8 so as to be vertically movable with respect to the record. At its free end the tone arm carries a suitable pick-up which may be of conventional form and which includes the usual needle or stylus '28. At the lower end of the tone arm-carrying spindle 21!, there is provided an extending arm 21, the purpose of which is to actuate a switch mechanism 28 at the end of the playing of a record so as to automatically stop the rotation of the turntable, as will be further described hereinafter.

As previously mentioned, the operating parts are controlled by the movements of the door [4. Tothis end, there is provided at the under side of the supporting panel 1 a slide member 29 (see Fig. 4), which is slidably supported by the supporting panel. Member 29 has slots 39 and 3! therein, by means of which it is slidably supported for rectilinear movement forwardly and rearwardly. As shown in Fig. '7, the supporting arrangement for the slide member. 29 may include a pair of suitable fastening elements, such as screws 32 and 33, which are carried by the supporting panel 7 and which extend through the slots and 3! respectively. Thus it will be seen thatthe slid'e member 29 is supported for guided movement in the manner stated. At its forward end, the slide member 29 has a depending lug 34 to whi'chone endoff a connecting link 35 is pivotally connected. The other end of link 35 is pivotally connected to the door Id at a point 36 (see Fig, 6) oifset from the hinge or pivot 31 of the door; When the door is opened the link 35 is pulled forwardly so as to move the slide member 29 from the positon of Fig. 6 to that of Fig. 7, and when the door is closed, the said partsv are moved in the reverse direction so that they slide member 2Q moves to the position of Fig. 6.

In accordance with the present invention, the tone arm 81s actuated'in response to movement of door It and slide member 29 by means of the mechanism now to be described. As clearly shown in Fig. 6. there is provided at the rear of the tone arm 8 an extending lug 38 carrying a screw 39to which one end of a flexible cord 40 is attached. The cord passes around a. pair of pulleys 4i and 22, and its other endis attached to one end of a helical'spring Q3. whose other end is secured to a screw t l carried by a depending lug on the slide member 29. The pulleys 4i and 4'2" (see Fig. 5) are rotatably mounted on a bracket 46 secured to the under side of the supporting panel 7. The bracket has cord guiding and retaining portions ll and 52 as clearly shown in Fig. 5. The pulleys are so arranged that when a pull is exerted on the cord Why the forward movement of the slide member 29, the tone arm is subject to both vertical and horizontal force compo.- nents which lift the tone arm off of the record and swing it laterally to a position in which it may be lowered onto the next record. Furthermore, the horizontal pivot 8 of the tone arm is so arranged in relation to the vertical pivotal support that the vertical force component is effective .to lift the needle or stylus off the record before the tone arm is moved laterally, thus preventing scratching of the record. When the slide member 2!] is in its rearward position, i. e. when the door i4 is closed, there isno tension on the spring 43 and the tone arm is in its operative position.

When the slide member is in its forward position, i. e. when the door M is open, the spring 43 is placed under tension and the tone arm is raised. The tension of the spring urges the tone arm laterally against a stop, as will be described further hereinafter.

The phonograph apparatus is adapted to condition itself automatically for the playing of different sized records. Since records are commonly made. in two sizes, 10 inch and 12 inch respectively, the apparatus is preferably designed to play such records. The automatic conditioning is accomplished by the provision of a feeler mechanism which is disclosed and broadly claimed in the above-mentioned Harman application. As shown in Fig. 3, this mechanism comprises a pair of L-shaped

members

41 and 48 pivotally supported at the upper side of supporting panel I at points 49 and 50 respectively. These feeler members are arranged as shown and their inwardly extending arms 5! and 52 are pivotally connected together by a pin 53, as shown most clearly in Figs. 6 and 7. To permit free movement of the feeler members about their pivots 49 and 50, the

arms

51 and 52 may have slightly elongated openings for the pin 53, as shown in Fig. 9. The forwardly extending arms 54 and 55 (Fig. 3) of the said feeler members are interconnected by means of a spring 56 which urges the said arms toward one another. A stop 51 is arranged so as to be engageable by arm 54 and serves to limit the inward movement of the two arms. At their outer ends, each of the forwardly extending

arms

54 and 55 carries a roller 58 and 59 for engagement with an inserted record as hereinafter described.

The arm 55 also carries a post 60 which serves as a positioning or indexing means for the tone arm, so as to govern the record-commencing position of the tone arm according to the size of the record which it is desired to play in any instance. A covering 5| on the upper part of post 60 serves to cushion the tone arm when coming in contact with the post. The post 6i functions cooperatively with the cord and pulley arrangement hereinbefore described to position the tone arm for the playing of an inserted record. When the door i4 is opened and the tone arm is raised, the tension of spring 43 urges the tone arm against the post 60.

As shown in Figs. 3 and '7 the connecting pin 53 for the

feeler members

41 and 48 is movably mounted in a slot 62 provided in the supporting panel "I. At its lower end the pivot pin has a projection 63 which is engageable by a latch member 64 (see Figs. 9 and which is pivotally carried at the underside of the supporting panel at 65. This latch member is shaped as illustrated and has a recess 66 into which the projection 63 may enter, as shown in Fig. 10. The latch member 84 also has a slot 61 through which a pin 68 on the slide member 29 extends. By means of this interconnection between the latch member 64 and the slide member '29, the former is rotated about the pivot 55 during movement of the slide member. just described will be apparent presently.

In Figs. 3 and 6 the record l2, shown in solid lines, is a small sized record, e. g. a 10 inch record. Normally the

feeler arms

54 and 55 are positioned in their inner most positions, as shown in Fig. 3, and the pin 63 is removed from the latch member 64. In this condition of the apparatus, the rollers 58 and 59 are spaced apart sufficiently so that a 10 inch record may be inserted between them without actuating the feeler mechanism, as may be seen in Fig. 3. When the record is in place on the turntable, the rollers are free of the edge of the record. The stop 51, which establishes the innermost position of the rollers, is eccentric in form and may be adjusted to provide the desired clearance between the rollers and the record.

When a larger sized record, e. g. a 12 inch record, is inserted, it engages the rollers 58 and 59 and moves the feeler arms outwardly as shown in dot and dash outline in Fig. 3, wherein the larger sized record is shown in dot and dash outline at l2. At this time, the door i4 is necessarily open and the slide member 29 has moved forwardly so that the latch member 64 is in the position of Fig. 9. As the feeler arms move outwardly, the pin 53 moves forwardly into the position shown in Fig. 9. At this time the feeler arms are being held in their outer position by the larger record l2, as shown by the solid The purpose of the structure line illustration in Fig. 9. When the door is closed, the slide member 29 moves the latch member 64 to the position of Fig. 10. The latch member thus latches the feeler arms in their outer position and it is also shaped so as to cam the pin projection 63 slightly forward and thereby move the feeler arms a little further outwardly so that the rollers 58 and 59 are free of the record l2, as shown by the broken line representation of the arm 54 in Fig. 9. When the door is opened, following the playing of the record, the latch member 64 is returned to the position of Fig. 9, and when the record I2 is removed, the feeler arms return to their inner positions. Thus, each time a larger sized record is in-' serted, the feeler arms are moved outwardly sufficiently to clear the record as soon as the door is closed, and when the door is opened and the record is removed, the feeler arms return to their normal inner position.

One purpose of the feeler arm movement is to position the tone arm indexing post 60 so that the tone arm will be properly indexed for the different sized records. Normally the post 60 is positioned as shown in Fig. 3 so as to index the tone arm for the smaller sized records, but when a larger sized record is inserted, the indexing post is moved outwardly to a position in which it indexes the tone arm for the larger sized record. In either position of the post 60, the spring 43 urges the tone arm against the post. When a larger sized record is inserted and the post moves outwardly, the tone arm follows the post to the new position under the impetus of spring 43.

As previously mentioned, provision is made in the apparatus for causing the record-centering spindle IE to recede in response to opening movement of the dOor 14. This feature is claimed in the above-mentioned Thompson application. As shown in Figs. 7 and 8, the centering spindle is lowered from its operative position to an inoperative position, in which its upper end is flush with or slightly below the surface of the turntable 9. This withdrawal of the centering spindle facilitates insertion and removal of the records, and it permits the employment of a narrower recordinsertion slot than would otherwise be permissible, since it permits the insertion and removal of records in a horizontal plane immediately above the turntable and does not require any tilting or inclination of the record.

Referring to Figs. 7 and 8, the centering spindle 15 has its upper end tapered and it is carried by a rod 69 which is slidably mounted within the turntable bearing structure I'!. At its lower end, the rod '59 carries a block Hi from one side of which projects a pin H. The latter is disposed in a cam slot 12 (see Fig. 4) of :a depending plate 13 formed integrally with the slide member 29.

The cam slot I2 is so shaped that it lowers and raises the centering spindle IS in response to opening and closing movements of the door l4. When the door is closed, the pin H is in the higher portion of the cam slot 12, as shown in Fig. 6, and the centering pin is in its operative position. When the door is opened, the forward movement of the cam slot 12 lowers the spindle it to its inoperative position, as shown in Fig. 7, at which time the pin H is in the lower part of the oam slot 1'2. When the door is again closed, the inclined portion of the cam slot 12 moves the spindle-carrying rod 59 upwardly to return the spindle IE to its operative position.

When a record is inserted, at which time the door 44 is open and the centering spindle It is in inoperative position, the record is approximately centered on the turntable by the

ieeler arms

54 and 55 and also by a rear stop structure now to be described. Referring to Figs. 3, 6 and 7, this rear stop structure comprises a stationary stop M mounted on the supporting panel 7 and a movable stop 15 pivotally mounted on the stationary stop at 16. Movable stop 15 is generally of U shape and has downwardly extending arms 11. The ends of these arms are interconnected with the pin 53 which interconnects the arms and 52 of the feeler mechanism, as previously described. To this end, the pin 53 has an upper projection 18, and a connecting element '59 serves to interconnect the arms ill with the said upper projection of the pin 53. As illustrated, the element 79 may take the form of a piece of stiff wire or a bendable rod whose intermediate portion encircles the projection 18 and whose ends are secured to the arms ll. By means of this structure, the movable stop 15 is actuated in response to movement of the pin 59.

When the feeler mechanism is in the normal position for the playing of smaller sized records, as previously described, the pin 53 is at the rear of slot 62, as shown in Fig. 6, and the movable stop 15 is in operative position and serves to limit the movement of a record during insertion thereof. However, when the feeler mechanism is actuated by the insertion of a larger sized record, as previously described, the pin 53 moves forwardly in slot 62 and raises the stop l5 to an inoperative position, as shown in Fig. 7. The stationary stop M is then eifective to limit the movement of the larger sized record as the latter is inserted. It should be noted that the movable stop 15 is raised before the edge of the record reaches the location of the stop structure.

By means of this arrangement, either sized record is approximately centered on the turntable, and when the center spindle it moves upward to its operative position, its tapered end enters the center hole of the record and the spindle centers the record exactly on the turntable.

In accordance with the present invention, provision is made for automatically stopping the turntable after the playin of a record and for automatically starting the turntable in response to closing movement of the door it. The switch mechanism 28 hereinbefore mentioned is employed for this purpose. The switch mechanism, which per se is claimed in the above-mentioned Thompson application, is shown in detail in Figs. 11 to 15 to which reference may now be had. This mechanism comprises an inverted U- shaped supporting bracket 89 secured to the underside of the supporting panel 1, the under surface of which is represented by the dot-anddash horizontal line in Figs. 11 and 12. The bracket 80 carries a rotatable shaft Bl which is suitably journaled, for instance, in bearings 32 and 83 which may form integral parts of the supporting bracket. A mercury switch 8 2 is carried by a supporting member 85 which is mounted on one end of the shaft 8i so as to be rotatable therewith. A pair of stops 86 and 81, formed integrally with the supporting bracket 89, serve to limit the movement of the switch-supporting member 85 as shown in Fig. 12. Member 85 eX- tends upwardly from the axis of rotation and carries a pin 88 at its upper end, upon which an actuating element 89 is pivotally mounted. The upper end of element 89 is provided with a friction hood 90 preferably formed of rubber or like material. The element 89 functions cooperatively with the previously mentioned arm 21 to actuate the switch mechanism at the end of the playing of a record, as will be described presently.

A resilient member 9|, which may take the form of a piece of spring wire or the like, is secured to the bracket 89 at 92 and is wound about a supporting projection or finger 93 on the bracket 89, and has its lower end portion in frictional engagement with the shaft 8! so as to impose a frictional drag on the shaft and thus tends to oppose rotation of the shaft. The purpose of this will appear presently. At the end of shaft 8i opposite the switch 84, there is provided a resilient finger 94 which is engageable by a cam member 95 (see Fig. 4) formed integrally with the slide member 29, the purpose of which will also appear presently.

Referring again to Fig. 3, the arm 21, which extends from the lower end of the tone armsupporting spindle 24, has an enlarged end form ing a plate 96 which is adapted to engage the friction hood 99, as shown in Figs. 14 and 15. The arm 21' is so positioned in relation to the tone arm 8 that the plate 98 engages the friction hood 99 when the needle or stylus engages the eccentric groove at the end of a record, the said groove being shown in Fig. 3 at 91. The eccentricity of the groove 9'! may vary from one record to another, and the switch mechanism is designed to insure operation of the switch regardless of such variation.

The operation of the switch mechanism may best be explained with specific reference to Figs. 12 to 15. The mercury switch 84 is connected in circuit with the turntable driving motor so as to control the operation thereof, and during playing of a record, the switch is in the position of Figs. 12 and 14 in which it is closed, so that the turntable driving motor is energized.

Prior to the engagement of plate 96 with the friction hood 9!], the element 89 is vertically positioned, as shown in Fig. 12, due to the fact that its supporting pin 88 is above its center of mass. As the needle or stylus approaches the eccentric groove at the end of the record, the plate 96, moving from left to right, as viewed in Figs. 12, 14 and 15, engages the friction hood and defiects the element 89 to a position such as shown in Fig. 14. When the stylus enters the eccentric groove at the end of the record, the plate 96 moves back and forth, as indicated by the double head arrow in Figs. 14-. and 15. The range of this oscillatory motion of the plate 96 is indicated by the dotted line representation in Fig. 13 and the associated double head arrow. Movement of the plate toward the left in Figs. 14 and 15 causes application of a force to the pin 88 through the upper portion of element 89, which force moves the switch support 85 counterclockwise from the position of Fig. 14, as shown in Fig. 15. If the eccentricity of the record groove is relatively great, the first left-hand movement of plate 96 may move switch 84 sufiiciently to open it. If the groove eccentricity is not so great, the element B9 is stepped progressively toward the left as shown in Fig. 15, thereby moving the switch progressively until it opens. Thus the switch is opened even though the eccentricity of the record groove may vary from one record to the next. The friction dra element 9| serves to maintain the switch in any position to which it is moved.

During the playing of a record, the cam member 95 is in the left hand position shown in Figs.

11 and 13. When the door I4 is opened, after the playing of a record, the cam member 95 moves to the right hand position shown in dotted outline in Figs. 11 and 13, and during such movement the upper surface of the inclined cam member engages the end portion of resilient finger 94. This would efifect actuation of the switch mechanism to open the switch 84 if the switch had not already been opened by the action of the plate 96, as above described. Consequently, the resilient finger 94, being in a raised position, is engaged by the upper part of cam member 95 and is deflected sufficiently to enable its end portion to ride over the upper part of the cam member as the latter moves to the right hand position shown.

When the door M is closed to initiate the playing of another record, the cam member 95 moves to the left hand position shown in Figs. 11 and 13. During this movement, the lower face of the inclined cam member engages the finger 9d and moves it downwardly, thus causing rotation of shaft M in a direction to close the switch 84 and thus energize the turntable driving motor. During this operation, the resilient finger 94 rides over the lower portion of the inclined cam member 95 to the position shown in Fig. 11.

Thus the cam member 95 functions, in response to movement of the door l l, to insure that the switch 84 is opened and to close the switch so as to start rotation of the turntable when the door is closed.

Considering the operation of the phonograph apparatus as a whole, let us assume that a record is being played, the door It being closed. At the end of the playing of the record, the switch mechanism 28 opens the switch as to stop the turntable in the manner just described. When the door It! is opened to remove the record which has just been played and to insert a new record, the slide member 29 moves forwardly, and in doing so it performs several functions. It lifts the tone arm 8 oil of the record and moves it to a starting position above the marginal portion of the record through the action of the cord and pulley arrangement, as hereinbefore described. It also moves the latch member 54 (Figs. 9 and 10) to an ineffective position. It also lowers the record centering spindle iii to its inoperative position. It also insures that the motor switch 84 is opened.

The user may now remove the record which has just been played and insert a new record. Assuming that a smaller sized record is inserted, the feeler mechanism is not actuated but the other parts are actuated in response to closing movement of the door I4. During the insertion of the smaller sized record, the rollers 58 and 59 and the stop l serve to center the record approximately, as previously described. When the door M is closed, the rearward movement of slide member 29 raises the centering spindle l6, closes switch 84 to start rotation of the turntable, and lowers the tone arm to bring the stylus into engagement with the marginal portion of the record. The parts are so designed that these functions are performed in the order named. The spindle it exactly centers the record so that it is free of contact with the feeler rollers and the rear stop. The operating cycle is now repeated.

Suppose however, that a larger sized record is inserted. In such case the ieeler mechanism is actuated, causing pin 53 to move forwardly in its slot 52 and thus moving the stop E5 to an inoperative position, as shown in Fig. 7. The approximate centering of the record is then effected by the stationary stop M in cooperation with the rollers 58 and 59. When the door I4 is closed, th in 53 is latched in its forward position by the latch member 64 and is also cammed by the latch member sufficiently to disengage the rollers 58 and '59 from the edge of the record, as previously described with reference to Figs. 9 and 10. Aside from the operation of the feeler mechanism, the parts are actuated in the same manner regardless of the size of the inserted record.

While it has been assumed that the user desires to change records, as will usually be the case, in some instances the user may desire to repeat the playing of a record. In such case he simply opens the door l4 and then closes it without changing records. The opening and closing movements 01' the door effect automatic operation of the parts to repeat the playing of the record, as will be obvious from the foregoing description.

It should be noted also that the playing of a record may be interrupted at any time merely by opening the door I l, in which case the cam member will open switch 84, as hereinbefore described.

The novel features of the present invention have now been fully described with reference to the phonograph apparatus illustrated. It will be understood, of course, that the specific disclosure is not intended to limit the invention, the scope of which is defined by the appended claims.

I claim:

1. In a phonograph apparatus, an enclosure having a restricted slot-like opening for the insertion and removal of records, a door or lid on said enclosure adapted to conceal said opening when in closed position, a record-supporting turntable arranged within said enclosure to receive an inserted record, a tone arm mounted for lateral and vertical movement in cooperation with said turntable, a stop member for indexing said tone arm in a record-commencing position, means controlled by an inserted record for positioning said stop member according to the size of the record, means including a flexible connection for moving said tone arm in response to movement of said door, and a spring included in said flexible connection and adapted to be placed under tension when said door is opened, thereby to raise said tone arm and urge it against said stop memher.

2. In a phonograph apparatus, an enclosure having a restricted slot-like opening for the insertion and removal of records, a door or lid on said enclosure adapted to conceal said opening when in closed position, a record-supporting turntable arranged within said enclosure to receive an inserted record, a tone arm mounted for lateral and vertical movement in cooperation with said turntable, a pair of feeler arms engageable by an inserted record, a stop member carried by one of said arms for indexing said tone arm in a recordcommencing position according to the size of the record, means including a flexible connection for moving said tone arm in response to movement of said door, and a spring included in said flexible connection and adapted to be placed under tension when said door is opened, thereby to raise said tone arm and urge it against said stop member.

ELMER O. DEAVER.

(References on following page) REFERENCES CITED Sibley Mar. 15, 1921 Name Date Karish et a1. May 15, 19,23 Abt Dec. 2, 1924 Collaro et a1. Nov. 30, 1937 Carson Apr. 21, 1942 FOREIGN PATENTS Country Date Great Britain Nov. 17, 1909 Great Britain Sept. 12, 1941 Australia Dec. 23, 1941