US1842550A - Phonograph - Google Patents

Description

Jan" 2%, W32 N. H. HOLLAND PHONOGRAPH Filed April 28. 1926 2 Sheets-Sheet 4 RM W C ATTORNEY Jan 2%, H932.

N. H. HOLLAND 1,842,559

PHONOGRAPH Filed April 28, 1926 2 Sheets-$heet 2 -|NVENTOR TTORNEY Patented .len. Rb, 1932 UNITED STATES PATENT OFFICE NEWMAN H. HOLLAND, F MONTCLAIR, NEW JERSEY, ASSIGNOR TO THOMAS A. EDISON, INCORPORATED, OF WEST ORANGE, NEW JERSEY, A CORPORATION OF NEW JERSEY IHONQGRALPH Application filed April 28,

My invention relates to phonographs and more particularly to phonographs of the business or commercial type, being particulariy directed to an improved construction and arrangement whereby the reproducing stylus of the phonograph can be moved or spaced back for the purpose of causing the repetition of any portion of the record whenever the operator, who is transcribing the record, so desires.

The principal object of my invention is to provide an arrangement wherein the backspacing means is actuated directly by the motor of the phonograph or by a part driven in by such motor so that the power for actuating such means will be furnished by the motive means, and wherein upon the actuation of the back-spacing means, the stylus will preferably be iven a rapid, momentary moveto ment, preterably predetermined, back towards the beginning of the record.

Another object of my invention is to provide in back-spacing means to be operated as described above, a construction wherein the reproducing stylus, in the back-spacing operation, is shifted back over the part of the record to be repeated without being lifted from engagement with the record so that the rapidity and efiiciency of operation of such bacl-spacing means will be greatly facilitate A further object of my invention is to provide in a phonograph equipped with backspacing means such as described, means also preferably operable bythe motive means of the phonograph, for ensuring the locating of the reproducing stylus in a proper position, preferably a central position, with respect to its mounting after the stylus has been moved or slid across the record by the operation of the backspacing means.

A still further object of my invention is to provide improved means for controlling the actuation of the back-spacing means and preferably also of the means for positioning or centering the reproducing stylus, which control means may be located at a convenient point for actuation by the transcriber while the latter is operating the typewriting machine, the preferred position for this purpose ill Elli

1926. Serial No. 105,051.

being adjacent the keyboard of such machine.

Other objects and features of my invention will be hereinafter more particularly de scribed and claimed.

For a clearer understanding of my invention attention is directed to the drawings accompanying and forming a part of this specification, and in which:

Figure 1 is a perspective view, partly broken away, showing a preferred embodiment of my invention applied to a phonograph of the commercial type;

Figure 2 is an enlarged View in side eleVa-- tion, partly in section, of the reproducer carriage, the stylus positioning means and part of the back-spacing mechanism of the phonograph shown in Figure 1;

Figure 3 is a bottom plan view of the forward end of the reproducer carriage, the re,- producer supported on said carriage and part of the stylus positioning or centering means;

Figure 4 is a view, partly in elevation and partly in section, of a portion of the mechanism shown in Flg. 3;

Figure 5 is a fragmental view in rear eleva- 7 tion, artly in section, of the feed screw of the p onograph and parts of the backspacing and stylus locating mechanisms;

Figure 6 is a view in rear elevation, partly in section and partly broken away, of the so feed screw, the back-spacing rack supported thereon and the means for operatively con necting the rack with the feed screw;

Figure 7 is an end View of the mechanism shown in Figure 6 looking from the right;

Figures 8 and 9 are enlarged views in elevation of the opposite ends, respectively, of the electro-magnetic device comprising a part of the means, shown in Fig. 1, for controlling the actuation of the back-spacing and stylus pdsitioning mechanisms; and

Figure 10 is a diagrammatic view showing the wiring of the means for controlling the actuation of the back-spacing and stylus locatin mechanisms.

Referring to the drawings reference character 1 represents the cabinet or frame of a phonograph of the business type, and 2 a phonograph record or blank mounted on the usual mandrel 3. The mandrel shaft 4.- is 100 rotatably mounted on the frame of the phonograph and is adapted to be operated by suitable motive means comprising a pulley 5, a driving belt 6 which runs over the pulley and a suitable motor, such as'the usual electric motor (not shown), mounted within the cabinet 1 for operating the belt 6.

Reference character 7 represents a travelling carriage or arm having a reproducer 8 mounted thereon adjacentone end and provided at its other end with a hub or enlargement 7 which is slidably. and rotatably mounted upon a back rod 9 fixed in standards S, S with which the cabinet 1 is provided. A guide rod 10 is mounted in standards S, S forwardly of the back rod 9, and the arm or carriage 7 .has a screw 11 adjustably mounted thereon, the head of which screw is adapted to rest on the guide rod 10 and support the carriage 7 in proper position with respect to the record 2. The carriage 7 and the reproducer 8 supported thereon are thus mounted for movement along the rods 9 and ,10, and feeding movement is imparted to the carriage to cause the stylus 8 of the reproducer to properly track the record 2 by a rotating feedscrew 12 comprising a part of the motive means of the phonograph and rotatably mounted at its ends in the standards S, S, and

a feed nut 13 connected with the carriage 7 and engaging said feed screw during the normal operation of the phonograph. The feed screw 12 is driven from mandrel shaft 4 at a reduced speed through a reduction gearing (see Figs. 1 and 2) coniprisinga gear 13' which is secured to the feed screw, and a smaller gear 13 which is secured to the mandrel shaft and which meshes with the gear 13'. The feed nut 13 is supported from the carriage 7 by means comprising an arm 14 which is pivotally mounted at one end by means of a pin' 15 within a slot 16 formed in the hub 7' of the carriage, and a forwardly extending spring arm 17 secured at one end to the arm 14 and having the feed nut 13 mounted for universal pivotal movement on its other end. Downward movement of the arm 14 with respect to the carriage 7 is limited by reason of the coaction of a screw 18 threaded through the arm with the rear face ofthe hub 7; while upward movement of the arm with respect to the carriage is limited by the engagement of the upper end of a screw 19 extending through the arm 14, with the bottom of the slot 16. A coiled spring 20 disposed about the upper extending end por- I tion of screw 19 acts to yieldingly maintain the arm 14 in its lowermost position to thereby maintain the feed nut 13- in engagement with the feed screw 12, as shown in Fig. 2. A screw 21 threaded through the arm 14 is arranged so that its upper end will coact with the spring arm 17 to effect the adjustment of the latter and cause the feed nut 13 to engage, the feed screw 12 with the proper pressure.

A nut 22 serves to lock the screw 21 in adjusted position.

During the normal use of the phonograph in transcribingrecords the reproducer arm or carriage 7 and the arm 14 mounted thereon will be in the positions shown in Fig. 2, with the feed nut 13 engaging the screw 12 and the stylus'8' of the reproducer 8 engag ing the record 2; and the feed screw 12, comprising a part of the motive means of the phonograph, will then coact with the feed nut 13 to effect feeding movement of the carriage 7 along the rods 9 and 10 from right to left, referring to Fig.1, with the stylus 8 properly tracking the groove of the record 2. It is frequently desirable to back-space the reproducing stylus 8' so as to repeat a portion of the record usually comprising only a few threads of the record groove last listened to, and for accomplishin -this result I have provided novel' bae spacing means which is preferably directly operableby the motive means of the phonograph or a part thereof, and means whereby the o' eration of the back-spacing means may readily controlled from a-convenient point such as a point adjacent the typewriter. The specific back-spacing means shown is arranged to be. actuated by the feed screw 12, and the construction thereof and of the controlling means therefor will now be described. The arm 14 is provided with an upward extension 23 having a forwardly extending arm 24 which terminates in a lateral end portion 25. A pin 25' is secured in the end portion 25 of arm 24 andhas a pawl or pawl member 26 pivotally mounted thereon.

The pawl 26 is yieldingly held a ainst the' the other end connected to the pawl. Refer-.

ence character 28 represents a rack member, said member preferably bein substantially semi-cylindrical in form and eing mounted or hung for free pivotal movement on the feed screw 12 at points beyond the threaded portion of the latter, by means of the circular ends 29 and 30 with which the said member is provided, the said ends having openings for the reception of the smooth end portions of the feed screw. Movement of the member 28 longitudinally of the feed screw is prevented by means of two collars 31 secured to the feed screw at each side of the end 30 of said member, these collars being. so located that member 28 will be maintained thereby in a position with its circular end 29 closely ad- 'jacent a spur gear 32 which is fixed'to the feed screw. The member 28 will under the action of gravity, tend to assume the position shown in Figs. 1 and 6 in which the main and movement of the member 28 from this position about the axis of the feed screw, is also resisted by a tension spring 33 one end of which is secured to the said member and the other end of which is secured to the top of the cabinet 1 by a screw 34. It will therefore be apparent that the rack member 28 tends to assume and stay in a position in which the rack formed on its rear longitudinal edge is out ofengagement with the pawl 26. In case the member 28 is turned in a clock-wise direction, referring to Fig. 7, the raclk 35 will be brought into engagement with the pawl 26 and coact with the latter to move the carriage 7 and reproducer stylus 8' back toward the beginning of the record 2. Such movement of the rack member 28 is produced by establishing whenever desired, a driving connection between the feed screw 12 and the rack member preferably of momentary duration, so that said member will be turned by the feed screw through an angle suflicient to engage and coact with the pawl 26 and effect the back-spacing of the car riage 7 a predetermined distance, preferably much less than the length of the record and preferably a distance substantially equivalent to the length of one of the teeth of the rack 35 to thereby move or skid the stylus back over the last few threads of the groove.

of the record. To effect the result just described l employ a construction comprising an arm 36 fixed to the end 29 of member 28 and having a pin 37 on which an angular member 38 is pivotally mounted by means of a sleeve 37' secured to the latter as by being brazed thereto at the bend therein. The member 38 has a short arm provided with a tooth 39 adapted to coact with the teeth of gear 32 and a much longer arm of sufficient weight to readily over-balance said short arm. The member 38 will under the action of gravity, normally be maintianed in a position in which the tooth 39 is out of engagement with the gear 32 and the long arm thereof is in a substantially vertical position, and'accordingly the rack member 28 and feed screw 12 will normally be operatively disconnected. "When, however, the member 38 is turned about its pivot so that the tooth 39 thereof is brought into engagement with gear 32, an operative connectionis established between the screw 12 and rack member 28 and causes the latter to turn with the screw. In order to disengage the tooth 39 from gear 32 when the member 28 has been turned by the feed screw through an angle suflicient to effect a single backspacing movement of the reproducer carriage 7, as described above, a pin 40 is fixed to one of the standards S in a position to be engaged by the longer arm of the member 38 and move the latter about its pivot. Thereupon the rack member 28 will under the actions of gravity and the spring 33, return to its normal inoperative position shown in Figs. 1 and 6.

The means for controlling the connection of the rack member 28 with the feed screw 12 and thereby the actuation of the backspacing mechanism, is preferably, though not necessarily, electrical and is capable of be ing operated from a distant point as by means of a suitable switch. This controlling means, as shown, comprises an electromagnetic device M havinga base or supporting plate 42 of insulating material which is fastened to the top of the cabinet 1 at a point adjacent the member 38, there being mounted on said base or plate two pairs of electromagnets having coils 43, 43 and 44, 44 and two U-shaped armatures 45 and 46 for the respective pairs of coils. The armatures 45 and 46 are pivoted at their ends to the plate 42 on axes 47 and 48 and extend along the sides of the respective coils and over the upper free ends thereof, each of the armatures being mounted so that the base thereof will move in a direction transversely of the upper ends of the respective pair of coils. One of the armatures, as shown the armature 46, has secured thereto an upwardly extending resilient arm 46' rovided with an inclined end portion adapted to co-act with the longer leg of the member 38 so as to move the latter into engagement with the gear 32 upon movement of the armature 46 in one direction. At one side of the coils and armatures is a vertical plate 49 secured to the supporting plate 42 and formed of insulating material. A vertically disposed arm 50 mounted independently of and interposed between the armatures 45 and 46 so as to be actuated thereby, is pivoted at its lower end to the plate 49 on an axis parallel with the axes 47 and 48, said arm being provided with tending through the plate 49 to the opposite side of the latter. The arm 50 is provided with suitable shock and noise absorbing material 52, preferably felt, against which a pivot pin 51 exthe armatures strike when actuated. At one edge the plate 49 is provided with spaced lugs to which are respectively secured contacts 54 and 55 having contact surfaces arranged in a plane substantially parallel with the plane of plate 49. A movable switch contact arm 56 is secured at one end to the projectin end portion of the pivot pin 51, the opposite end 57 of this arm being engageable with the spaced contacts 54 and 55 and adapted to slide or brush over the contact surfaces thereof whereby the circuits of the pairs of coils are controlled. The arm 46 is moved in one direction upon movement of the armatures 45 and 46 when one pair of coils is energized and in the opposite direction when the other pair of coils is energized. The movement of these armatures, through the medium of the pivoted arm 50, also automatically controls the switch contact arm 56 to open the circuit through one pair of coils and to place the circuit of the other pair of coils in condition to be closed upon each actuation of a suitable control switch T, as will be hereinafter more fully described. Adjacent one end the armatures 45 and 46 are connected by a coiled spring 58 which is arranged. to be tensioned by the movement of either armature to attracted position. This spring co-operates with inwardly extending members 59 and 60 provided upon the. armatures and which engage each other and are adapted to prevent the actuation of one armature under the tension of spring 58 until the other armature reaches its attracted position. Each of the members 59 and. 60 has, referring to Fig. 8, a curved upper edge concentric with the pivot of its armature and adapted to be engaged by a curved end of the corresponding member of the other armature. It will be apparent that when one armature is moved to attracted position its said concentric edge supports and holds the other armature and releases it only when such movement is completed, the members then engaging in the reverse order so that when the other armature is attracted the first armature is supported and held until completion of the movement of the said other armature. Reference characters 65 and 66, referrin to Fig. 10, represent the conductors of a line leading from a suitable source of current supply (not shown) for furnishingcurrent to the circuits of the two pairs of coils of the electro-magnetic device M. The line conductor 65 is directly connected to the switch contact arm 56 which co-acts with the spaced stationary contacts 54 and 55. The contact 54 is connected by a conductor 67 to the coils 43, 43 and said coils are connected by a conductor 68 to a binding post B; while the other contact 55 is connected by a conductor 69 to the coils 44, 44 and said coils are'connected by a conductor 70 to another binding post B. The line conductor 66 is directly connected to a movable arm 71 of the control switch T. The arm 71 of the switch T is arranged to coact with two spaced stationary contacts 72 and 73, being biased, as by means of a suitable spring 74, to a position in which it engages the contact 73. The contact 72 of the switch T is connected by a conductor 75 to the binding post B. while the contact 73 is connected by a conductor 76 to the binding post B. Normally the switch arm 71 will, under the action of the spring 74, be held in the dotted line position shown in Fig. 10, armature 46 will be in its attracted position with the base thereof directly opposite the upper ends of the coils 44, 44, armature 47 will be in its unattracted position to the rlght of the position shown in Fig. 10 and the contact arm 56 will be in engagement with the contact 54, as indicated in dotted lines. The spring arm 46 will then be located, referring to Fig. 1, in a position to the right of the long arm of member 38. If the phonograph is now operating to transcribe the record and it is desired to backspace the carriage 7 and the reproducer stylus 8', it is merely necessary to shift the contact arm 71 of switch T into engagementwith the contact 7 2, as indicated in full lines in Fig. 10. Thereupon the circuit of the coils 43,43 is closed through the following path: from line conductor 65, through arm 56, contact 54, conductor 67, coils 43, 43, conductors 68 and 75, contact 72, and switch arm 71 to the line conductor 66. Armature 45 will then be moved to its attracted position and at the completion of such movement armature 46 will be quickly moved, under the action of spring 58, to its unattracted position and arm 56 simultaneously moved from engagement with contact 54 into engagement with contact 55 to thereby interrupt the circuit through the co1ls 43, 43 and place the circuit of coils 44, 44 in condition to be closed upon the return movement of arm 71 into engagement with contact 73. In the rapid movement of the armature 46 to its unattracted position, the spring arm 46' carried thereby will be given a quick movement to the left, referring to Fig. l in which movement the'outer inclined end portion thereof will first engage the front face of thelong arm of the member 38 and effect the movement of such member about its pivot so as to bring the tooth 39 thereof into engagement with the gear 32 and then ass' beyond said arm to a position to the left thereof. As described above this establishes a driving connection between the feed screw 12 of the motive means and the rack member 28 and thereby effects a quick angular movement of such member about the axis of the feed screw and the backspacing of the carriage 7 and the reproducer stylus 8. The 5 member 38 is then tripped by engagement of the long arm thereof with the pin 40 so as to disconnect the feed screw from the rack member 28, and said member 38 will then assume its normal position with the long arm 11o thereof substantially vertical. When the operator releases contact 71, spring 74 will return the same to its normal position, that is the position in which it engages the contact 73. The circuit of the coils 44, 44 will then be closed through the following path: from line conductor 65, through arm 56, contact 55, conductor 69, coils 44, 44, conductors 70 and 76, contact 73 and switch arm 71 to the line conductor 66. Armature 46.will then be 1210 moved to its attracted position in which the base thereof is directly opposite the upper ends of the coils 44, 44, and at the completion of such movement of this armature, the armature 45 will, under the action of spring 58, be moved to its unattracted position and arm 56 will be moved into engagement with contact 54 to break the circuit of the COllS 44, 44 and place the circuit of coils 43, 43 in condit on to again be closed when the switch arm 71 1s 1 llfi lid

till

next engaged with contact 72. Upon such movement of armature 46 to its attracted position, the spring arm 46' will be returned to its normal osition at the right of the long arm of mem er 38. In this return movement of the spring arm 46 the outer inclined end thereof will pass over the rear face of the ion arm of the member 38, and accordingly wifinot act to effect the engagement of tooth 39 of the member 38 with the gear 32. It will be apparent that the carriage 7 and the reproducer stylus 8' will be baokspaced a given or predetermined amount, preferably a d1stance substantially equal to that between two adjacent teeth of the rack 35, each time the switch arm 71 is engaged with the contact 72. If the stylus is not spaced back far enough upon one closure of the circuit of coils 43, t3 the desired amount of backspacing can be obtained by successive actuations of switch arm 71 so as to close said circuit a number of times. With the construction above described, it will be seen that the back spacing means is actuated by a member, namely, the feed screw 12, which is driven from the shaft 4 of the record support or mandrel 3 through a reduction gearing comprising the gear 13 and the smaller gear meshing therewith and secured to the shaft 4. Because of the reduction gear driving connection between the shaft 4 and the feed screw 12, but little power is expended by the motor which drives the phonograph mechanism through the pulley 5 and belt 6, in the actuation of the backspacing means, or in other words, the drag or load on the motor resulting from the actuation of the backspacing means in the construction and arran ement described is comparatively slight. hile the reproducer arm 7 is capable of being moved about the back rod 9 so as to disengage the stylus 8 from the record and the feed nut 13 from the feed screw 12, to enable the carriage to be moved manually along the back rod to position the stylus at any desired point, such as at the beginning of the record, said carriage during the normal operation of the phonograph, remains in the position shown in Fig. 2 in which the head of screw 11 rests on the guide rod 10. There fore the carriage when moved bodily along the rods 9 and 10 in the backspacing operation, is not lifted, and accordingly the stylus 8 is not raised but slides or skids along the record 2 until it comes to rest in one of the sound record grooves at a point which it has already passed.

f When the carriage or arm 7 is backspaced, as described, the feed nut 13 should be disengaged from the feed screw 12. This is accomplished, in the construction shown, by imparting to the rack member 28 a sufficient angular movement when driving connection is established between the same and the feed screw 12, to cause this member to coact with the pawl 26 and raise the arm 14 about its pivot 15 so as to move thefeed nut 13 to the dotted line position shown in Fig. 2. When the rack is disengaged from the pawl 26, gravity and the spring 20 act to return the arm 14 and the feed nut and other parts carried thereby to the full line position shown in Fig. 2. The construction and arrangement are such that in the angular movement imparted to rack member 28 upon each actuation thereof by the feed screw 12, said rack member, by the coaction thereof with pawl 26, will first act to disengage nut 13 from the feed screw and then will effect a backspacing movement of the carriage 7. During the first part of each such angular movement of the rack member 28, one of the teeth thereof engages pawl 26 and through the latter acts to raise arm 1a to the dotted line position shown in Fig. 2, in which the nut 13 is disengaged from feed screw 12 and stop screw 19 is engaged with the bottom of slot 16, the strength of spring 27' being such that pawl 26 will be maintained thereby substantially in the pivotal position shown in Fig. 5 while arm 14 is thus raised; while during the remaining part of the angular movement of rack member 28 the latter will act to move pawl 26 about its pivot and against the action of spring 27 to a substantially horizontal position and thereby effect a sliding back-s acing movement of carriage 7 on the r0 s 9 and 10.

The reproducer 8 may be of an suitable construction. As shown this repro ucer c0mprises a sound box having a diaphragm suitably mounted therein, an arm 80 pivoted at one end on a lug projecting downwardly from the sound box and provided at its other end with a pin 81, a cylindrical floating weight 82 pivotally mounted centrally thereof on the pin 81 and a stylus lever 83 pivotall mounted on the floating weight, said lever eing con nected at one end to the diaphragm by the usual link and having the reproducer stylus 8' mounted in the other end thereof. The floating weight 82 is provided with a pin 84 which extends within a loop 85 depending from the sound box and coacts with such loop to limit the lateral movement of the stylus 8 about the pivot of the floating weight. During the back-spacin operation, in which the stylus glides or ski s across the record groove, there is a tendency for the stylus and floating weight to move about the pivot pin 81 to a position in which the pin 84 is not properly located within the U- shaped loop 85, but rests or bears against one side of said loop, as indicated in dotted lines in Figs. 3 and 4. Accordingly, I have rovided means for insuring the location 0 the stylus 8 in proper position, preferably a posiportion 23 locating means preferably being constructed and arranged to e actuated automatically upon each backspacing operation by power supplied by the motive means of the phonoraph. To attain this result a member 86 is pivotally mounted at one end thereof, as by a pivot screw 87, on the carriage 7 at a point adjacent the reproducer, and 1s provlded at its other end with a U-sha ed portion or stirrup 88 arranged to stradd e the limit loop with the leg 89 thereof adapted to coact with the pin 84. A torsion spring 90 mounted on the pivot screw 87 is arranged to coact-wlth the member 86 to yieldingly maintain the latter against a pin 91 fixed to and pro ectmg from the carriage 7, as shown in fu lines in Fig. 3, with the legb89 out of engagement with the pin 84. Mem er 86 is provided w1th an inclined or beveled surface 92 ada ted to be engaged by a laterally extending eveled end 93 formed on the forwardly extending of arm 14. The arrangement is such that when, in the back spacing operation, the arm 14 and the parts carried thereby are raised to the dotted line positions shown in Fig. 2, the said end 93 will engage the inclined surface 92 of member 86 and move the latter about its pivot to the position shown in dotted lines in Fig. 3, and thereby cause the leg 89 engage and move-the pin 84 to proper position within the loop 85, preferably a central position. When, at the completion of the back spacing operation, the arm '14 and its extension 23 return to the full line position shown in Fig. 2, the spring 90 will at once act to return the member 86 to its inoperative position, shown in full lines in Fig. 3.

From the foregoing it will be apparent that with my invention the reproducer stylus can be backspaced at any deslred point in the reproduction of the record, with great rapidity and with the assurrance that at the completion of the backspacing operation the stylus will be properly positioned with respect to its mounting. Moreover the power for actuating the backspacing means, for disengaging the carriage feeding means and for positioning the stylus is supplied by the motive means of the phonograph. Accordingly with my invention it is unnecessary either to provide any powerful actuating means, such as a strong electro-magnetic device, or for the operator to perform any troublesome or laborious operations. The electro-magnets comprising parts of the specific controlling means shown, can be operated by a very weak current and the operation of such controlling means is effected through a single movable switch member capable of being actuated by a very light touch.

It is to be understood that the embodiment of my invention shown and specifically described herein is illustrative only, and that such embodiment is subject to numerous changes and modifications without departure from the spirit of my invention and the scope of the appended claims.

Having now described. my invention, what I claim as new and desire to protect by Letters Patent is, as follows:

1. In a phonograph, the combination of a support for a record, sound reproducing means comprising a stylus adapted to track the record, motive means for actuating said support, means and which upon each actuation thereof will and can act to shift said stylus with but a single momentary and predetermined movement back toward the beginning of the record, and manually operable electrical means for controlling the actuation of said shifting means by said motive means, substantially as described.

2. In a phonograph, the combination of a support for a record, sound reproducing means comprising a stylus mounted for free lateral movement and adapted to track the record, motive means for actuating said support, means actuatable by said motive means and adapted upon each actuation thereof to shift said stylus a predetermined distance back toward the beginning of the record, and means also actuatable by said motive means for ensuring the proper positioning of the stylus with respect to its mounting when so shifted, substantially as described.

3. In a phonograph, the combination of a support for a record, a sound reproducin device comprising a stylus adapted to trac the record, motive means including a feed screw, said motive means being adapted to actuate said sup ort, a device connected with the sound reproducing device adapted to cooperate with said feed screw to move the reproducing device in a given direction relatively to the record, and means actuatable by said feed screw and which upon each actuation thereof will and can actto shift said reproducing device with but a single momentary and predetermined movement in the opposite direction, substantially as described.

4. In a phonograph, the combination of a support for a record, a sound reproducing device comprising a stylus adapted to track the record, motive means including a feed screw, said motive means being adapted to actuate said support, a device connected with the sound reproducing device adapted to co-o erate with said feed screw to move the repro ucing means in a given direction relatively to the record, means actuatable by said feed screw to shift said reproducing device in the opposite direction, and means for effecting a momentary operative connection between said shifting means and said feed screw, substantially as described.

5. In a phonograph, the combination of a support for a record, sound reproducing 'means comprising a stylus adapted to track support, means operable by said motive means for producin a relative feeding movement of said soun -reproducin means and said support, relatively mova le c'oacting pawl and rack members normally out of engagement and adapted, when brought 1nto engagement, to shift the stylus back toward the beginning of the record, and means actuatable by said feeding means for bringing saidmemhere into engagement to eifect such shifting of the stylus, substantially as described.

6. in a phonograph, the comblnation of a support for a record, sound reproducing means comprising a stylus adapted to track the record, motive means for actuating said support, means operable by said motive means for producing a relative feeding movement of said sound-reproducing means and said support relatively movable coactlng pawl and rahlr members normally out of engagement and adapted, when brought into engagement, to shift the stylus back toward the beginning of the record, means actuatable by said feeding means for bringing said memhere into engagement to effect such shifting of the stylus, and means for controlling the actuation of said last mentioned means by said feeding means, substantially as described.

7. in a phonograph, a record support, sound-reproducing means comprising a stylus adapted to track a record mounted on said support, operating means for driving said support, a rotatable member, means comprising a reduction gearing for driving said member from said operating means and means actuatable by said member and adapt ed upon each actuation thereof to shift said stylus only with a momentary movement back toward the beginning of a record mounted on said support, substantially as described.

8. In a phonograph, a record support, sound-reproducing means comprising a stylus adapted to track a record mounted on said support, operating means for driving said support, a feed screw, means comprising a reduction gearing for driving said feed screw from said operating means, a device connected with the sound-reproducing device adapted to cooperate with said feed screw to move the reproducing device in a given direction relatively to the record support, and means actuatable by said feed screw and which upon each actuation thereof will and can act to shilt't said reproducing device only with a predetermined movement in the opposite direction, substantially as described.

9. in a phonograph, a record support, sound-reproducing means comprising a stylus adapted to track a record mounted on said support, operating means for driving said support, a feed screw, means comprising a reduction gearing for driving said feed screw from said operating means, a device connected with the sound-reproducing device adapted to cooperate with said feed screw to move the reproducing device in a given direction relatively to the record support, and means actuatable by said feed screw and which upon each actuation thereof will and can act to shift said reproducing device only with a momentary movement in the opposite direction, substantially as described.

10. In ahonograph, a record support, sound-re pro ucing means comprising a stylus adapted to track a record mounted on saidsupport, motive means for driving said support, means actuatable by said motive means to shift said stylus back toward the beginning of a record mounted on said support, and manually operable controlling means which upon each operation thereof will and can act to effect only a single momentary actuation of said shifting means by said motive means, substantially as described.

11. In a phonograph, a record mandrel, a shaft on which said mandrel is mounted, means for driving said shaft and mandrel, sound-reproducing means, means for moving said reproducing meansin a given direction relatively to said mandrel comprising a feed screw, means comprising a reduction gearing for driving said feed screw from said shaft, and means actuatable by said feed screw and which upon each actuation thereof will and can act to shift said reproducing means only with a momentary movement in the opposlte direction, substantially as described.

12. In a phonograph, a record support, soun d-reproducing means comprising a stylus adapted to track a record mounted on said support, motive means for driving said support, means actuatable by said motive means to shift said stylus back toward the beginning of a record mounted on said support, manually operable controlling means, and means where y upon each operation of said controlling means there will and can be effected only a single momentary actuation of said shifting means by said motive means, substantially as described.

13. In a phonograph, a record support, means for driving said support, sound-reproducing means, means comprising a feed screw for moving said sound-reproducin means relatively to said support in one direction, means operable by said feed screw for moving said reproducing means in the opposite direction and comprising co-operative rack and pawl members, one of said members being applied to said reproducing means and the other of said members being normally in inoperative relation to said first member and operatively disconnected from said feed screw, and means for effecting a momentary operative connection between said feed screw and said second member to thereby operatively engage the latter with the member applied to said reproducing means, substantially as described.

14. In a phonograph, a record support, means for driving said support, sound-reproducing means, means comprisin a feed screw for moving said sound-repro ucing means relatively to said support in one direction,

means operable by said feed screw for moving said reproducing means in the opposite direction and comprising co-operative rack and pawl members, one of said members be 10 ing applied to said reproducing means and the other of said members being normally in inoperative relation tosaid'first member and operatively disconnected from said feed screw, means for efiecting a momentary operative connection between said feed screw and said second member to thereby operatively engage the latter with the member applied to said reproducing means, and manually operable means for controlling the operative 2 connection of said second member with said feed screw. 7

15. In a phonograph, a record support, sound-reproducing means comprising a stylus adapted to track a record mounted on said support, motive means for driving said support, means actuatable by said motive means to shift said stylus back toward the beginning of a record on said support, electrical controlling means comprising a manually operable switch adapted each time it is closed to effect the operation of the controlling means, and means whereby upon each operation of said controlling means there will be effected only a sin le momentary actuation of said shifting means by said motive means,

substantiall" as described.

This specification signed this 23rd day of April, 1926.

' NEWMAN H. HOLLAND.

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