US2200334A

US2200334A - Phonograph

Info

Publication number: US2200334A
Application number: US195492A
Authority: US
Inventors: Huenlich Charles; Gramann Heinrich F Max
Original assignee: Thomas A Edison Inc
Current assignee: Thomas A Edison Inc
Priority date: 1938-03-12
Filing date: 1938-03-12
Publication date: 1940-05-14
Anticipated expiration: 1957-05-14

Description

May 14, 1940- c. HUENLICIZH ET AL PHONOGRAPH Filed March 12, 1938 3 Sheets-Sheet 1 Char/e 7/ei11r MLM A TTOR/VEY y 14, 1940- c. HUENLICH El AL 2.200.334

PHONOGRAPH Filed. March 12, 1938 s Sheets-Sheet 2 l N V E N TOR 6mm 55 HUE/VL 1071 HEM/RICH F. MAX GRAMANA/ 5 A TTORNE Y May 14, 1940.

c HUEINLICH ET AL PHOROGRAPH Filed March 12, 1938 3 Sheets-Sheet 3 INV ENTOR Carjes Huenhclz Blem rlc/I E/fax Gramanrz aTTORNEY All 2,200,334 H PHONOGRAPH Charles Huenlich, Bloomfield, and Heinrich F. Max Gramann, Orange, N. .J.,. assignors to Thomas A. Edison, Incorporated, West Orange, N. 1., a corporationof New Jersey Application March 12, 1938, Serial No. 195.492

11, Claims.

Our invention relates to phonographs and more particularly to the sound-translating devices employed in commercial phonographs of the'dictating machine type. It is especially conoerned with sound-translating devices which are adapted for both sound recording and sound reproducing.

The form of sound-translating device which is adapted for" both sound recording and sound reproducing may principally employ suitable vibratile means; a recorder stylus and a repro- 'ducer stylus operatively related to the vib-ratile "means, means for moving, the respective styli into and out of operative position with respect to a record, and a suitably mounted means for biasing the reproducer stylus against the record when the translating device is adjusted for reproducing. When the translating device is adjusted for sound recording, the biasin ,means usually efiects no useful purpose. y In practice,

the biasing means is then permitted to engage the record, and be supported thereby, at a po sition in advance of the recorder stylus during the recording operation. The consequent riding or dragging of the biasing means on the record has tended to catch record chips, which are cut away by the recorder stylus, and smear them along the record surface. This smearing action does therefore mar or roughen the record surface and cause an increase in the surface noise. It is an object of our invention to avoid such smearing action by maintaining the biasing means free'of the record during the operation of recording thereon.

It is another object to provide means for suit ably maintaining the reproducer stylus biasing means freeof, and in a predeterminedposition with respect to, the record during the operation of recording thereon.

It is another object to provide means, conditioned for operation by the adjustment of the sound-translating device to recording position, for moving the reproducer stylus biasing means into a position wherein it is free. of the record.

It is another object to provide means, in a combined sound-recording and sound-reproducing device, for moving the reproducer stylus'biasing means into a record engaging position and then a predetermined distance from such position as the device is adjusted for recording purposes.

It is another object to provide, in phonographs,

means which are responsive to the control means of the. phonograph for moving the reproducer stylus biasing means into a predetermined position with respect to a record, and for supporting the biasing means in such position free of the record duringthe operation of recording.

' It is anotherobject to provide means in phonographs, for'supporting the reproducer stylus bifi-n asing means free of the record, which is condi-,

section, of such portion of aphonograph as is 'sufiicient to show the application of a preferre embodiment of our invention thereto; 1

Fig. 2 isa-bottom plan View of a portion of the mechanism shown in Fig. 1; I

Fig. 3 is an elevational view, partly'in crosssection, showing the mechanism of Fig. 1 in a operated position;

Fig. 4 is a detailed top plan view showing the arrangement, of a portion of the mechanism shown inFigJl;

Fig. 5 is a' cross-sectional view,,.taken" on the line 5--5 of Fig. 4, showing principally the various parts of the reproducer stylus biasing means;

Fig. 5a is an enlarged view of a portion of Fig.5; "I"

Fig. dis a view, similar to that of Fig. 5, showing the various parts of the reproducer stylus biasing meansin operated position;

Fig. '7 is'a top plan view of another form of hiasingmeans employed in a modified, form of our invention; I v

Fig. 8 is an elevational view, partly in crosssection, of a portion of the modified form of our invention, illustrating the means for lifting the biasing means from the record;

Fig. 9 is an elevational View of a portion of a'pnonograph showing the modified form of our inventionemploying the biasing means of Figs. 7 and 8, and a mechanism for lifting the biasing means which is conditioned for operation by the adjustment of the machine for recording and operated as the machine is put in action;

' Fig. 10 is a bottom plan View of a portion of the modified form of our invention as shown in Fig. 9; and 1 v Fig. 11 is an elevational view of another modication of our invention p Reference being had to the draw ngs, and parso I her

ticularly to Fig. 1, there will be seen a portion of a conventional phonograph comprising a carriage l slidably mounted on the

longitudinal rods

2 and 3 for longitudinal movement with respect to a record 4. Such longitudinal movement of the carriage I may be effected by the rotation of a feed screw 5 which is adapted to be engaged by a feed nut 6 carried by a U-shaped bracket 6' secured to an arm 7 which is hinged to the carriage I about the pivot 8. The arm 1 is guided by a guide rod 9 and is normally biased leftwardly by means of a compression spring l disposed about the rod 9. Movement of the feed nut 6 into and out of engagement with the feed screw may be-effected by means of a control lever -ll ,pivotally mounted on and slidable along the longitudinal rod 2 and having a hub l2 bearing a V-shaped cam portion l3. This lever II extends through a slot It provided in the carriage l and .is adapted to move the feed nut 6, as it is rocked forwardly and rearwardly about the rod 2. Such movement of the feed nut 56 is effected by means of a slidably mounted pin l5 engaging at one end with a roller I3 provided at the top of the cam portion -!3, and at its other end with the arm 1. When the control lever is in a central or neutral position the pin I5 is in its most rightward .position and the feed nut 6 is out of engagement with the feed screw 5; whereas when the control lever is rocked either forwardly or rearwardly the roller l3 moves off of the head of the pin l5,'and therefore the feed nut 6 moves into engagement with the feed screw 5, as by the force of the spring H1.

The carriage I has a forwardly extending arm I supporting a translating device [6 which is adjustable for either recording or reproducing purposes, This device has, for its main frame, a cup-shaped member H which is provided with a bifurcated and downwardly extending lug 18. This lug carries at its lower end a pivotshaft 19 having conical ends extending beyond the lug. A circular casing 20 having a sound chamber is pivotally mounted substantially concentrically with the cup-shaped member l! by means of a mounting bracket 2| secured to the circular'member 23 and comprising apair of spring arms 2| engaging the conical ends of the pivot shaft l9. In order that the displacement .between the spring arms 2 l may be adjusted so as tobring the arms 2 l into proper relationship with the conicalends of the shaft l9, there is provided a headed screw 22 which passes freely through one of the spring arms 2i and threads into the other,:as shown in Fig. 4.

The circular casing 20 has a central dome 23 (see Fig. l) which engages the internal spherical end portion 34 of a tube 25 to form a universal joint therewith. The tube 25 extends upwardly into a neck I? provided on the cup-shaped meml'l. The upper end 25 of the tube 25 is flanged outwardly to fit closely with the neck 11 and slidably therealong. The spherical end portion 25 of the tube '25 is suitably retained to the dome 23 so that any swinging movement of the circular casing 20 will effect also a sliding movement of the tube 25within the neck 11. The bottom 20 of the circular casing 20' is closed by a vibratile means or a diaphragm 26 which is held in place by a suitable gasket 21 shown in Fig. 5a. There is thus formed within the circular casing 20 a sound chamber, which communicates with the neck H by way of the tube 25, this neck being adapted for making suitable connection with a speaking tube (not shown). To the diaphragm 26 there is secured a stirrup 28 carrying a recorder stylus 29 at its outer end, as shown in Figs. 3 and 5.

Positioned below the casing 20 is the reproducer stylus biasing means comprising a biasing weight 30 having a central aperture 30 through which the stirrup 28 may freely pass. This weight is secured to a rearwardly extending bracket 3! which is pivotally mounted on the central portion of the shaft 19 carried by the lug I8. In order that the weight 30 may swing leftwardly and rightwardly, longitudinally of the record 4, it is 'pivotally connected to the bracket 3| by means of the shoulder screw 32. The biasing weight 30 is adapted to provide a suitable biasing force for a 'reproducer stylus 33 shown in Fig. 3. For this reason there is provided an arouately-shaped lever 33 pivotally mounted on the weight 30, by a pin :35,.and extending downwardly through the aperture .30. The forward end 34 of the lever 34 carries the reproducer stylus 33, and the rearward end 34 of the lever 'extendswithin the stirrup 28.

It will be seen that in the adjusting of the translating device IS, the following results are effected: When the translating device is adjusted into a reproducing condition the casing 20 is maintained in an upward position wherein the recorder stylus is free of the record 4, as shown in Fig. l. The weight 30 is, however, rendered free to move downwardly until it is supported by the record through the stylus lever 34. When the weight 30 is so supported, the rearward end 34" of the stylus lever bears against the lower inner side 28' of the stirrup 28, and the reproducer stylus 33, carried at the forward end'34 of the stylus lever, bears against the record 4. The downward force of the biasing weight 30 thusbiases the reproducer stylus 33 against the record '4; this downward force moreover maintains the rearward end 34 of the stylus lever 34 in contact with the stirrup 28 so as to couple the reproducer stylus 33 with the diaphragm 26. When the translating device is, however, adjusted into a recording condition, both the casing 20 and the weight 30 are rendered free to move downwardly towards the record. The casing 20 will thus move downwardly until it is supported by the record 4 through the engagement of the recorder stylus 29 with the record, and the biasing weight 30 will move downwardly into a position intermediate of the casing 20 and the record 4, as is hereinafter described. The means for so adjusting the translating device l6 comprises the aforementioned control lever H; as this lever is moved from its neutral position into its forward and rearward positions, the translating device I6 is respectively adjusted into recording and reproducing conditions by means of a mechanism hereinafter described.

In order that the carriage I may suitably accommodate the control lever H, it is provided with an enlarged channelled portion I" which overlies and is concentric with the guide rod 2. Centrally located with respect to the channelled portion I" and slidably mounted on the guide rod 2 is a sleeve 33 having a flange 3'! at one end which is secured, as by the screws 31, to the right-hand side of the channelled portion I", this portion having at its right-hand side a suitable slot 36 for receiving the sleeve 36, as shown in Fig. 2. At its left-hand side, the portion I" has a centrally located aperture 35", as shown in Fig. 10, through which the sleeve 36 extends. Rotatably mounted on the sleeve 36, and within the channelled portion I, is another sleeve 38 1 to which is secured the control. lever having the hub |2 surrounding the sleeve. In the channelled portion I" overlying the guide rod 2 there is provided the slot l4, extending transversely of the rod 2, through which passes the arm of the control lever permitting thereby a forward and rearward rocking movement of the lever H with respect to its central or neutral position.

1 ;:At the sides of the hub l2, and rotatably mounted on the sleeve 38 are the left and

right discs

39 and 40 having the respective forwardly extending fingers 4| and 42. These fingers are adapted to engage the under sides of the

forward projections

43 and 44 provided on the respective casing 20 and floating weight 30. The left dis c 39 is spring biased in a clockwise direction; that is, the respective finger 4| is biased upwardly by means ,of a forwardly extending arm 45' contacting the underside of the finger 4|, pivoted on a pin 46, and biased upwardly by a spring 41'; whereas the right-hand disc 40, having the finger 42 for controllingthe movement of the biasing weight 30, is normally biased in a counterclockwise direction, as by the downward force of the biasing weight 3!], so that its finger tends to move downwardly. Such downward movement of the finger 42 is however limited and controlled, as is hereinafter described, by means of a forwardly extending arm 45 pivotally mounted on the pin 46 and biased upwardly by means of a spring 41.

When the control lever I is in a neutral position, as shown in Fig. 1, it is adapted to maintain both the casing 2|] and the reproducer stylus biasing means in such respective upward positions as will permit them to be free of the record 4 so that the record may be freely mounted on and removed from a suitable record support (not shown).

For imparting the proper movements to the

discs

39 and 40 to condition. the translating device l for recording and reproducing, as by the respective forward and rearward rocking movements of the control lever H from neutral position, there are provided the

radially extending projections

48 and 49 on the hub l2. The projection 48 carries a pin 48' extending from each side thereof and substantially parallel with the rod 2. As the lever arm H is rocked forwardly from its central or neutral position, the pin 48' is adapted to engage the top sides of the respective fingers 4| and 42 and move them downwardly with the movement of the lever. Although the right-hand finger 42 is biased downwardly it is maintained in contact with the pin 48, as the lever H is moved forwardly from its neutral position, by virtue of a relatively strong upward biasing force applied to the member 45 by the spring 41 which slidably engages the under side of this finger. As the lever is moved rearwardly from its neutral position the leftward finger 4| will move therewith, by virtue of the upward biasing force acting thereon as caused by the spring 41', until the casing engages with the under side of the inverted cup member H. The rightward finger 42 is however adapted to move downwardly, as the lever H is moved rearwardly, in order that the weight may be free for supplying the biasing force to the reproducer stylus 33. Such downward movement of the finger 42, is effected by means of the projection 49, provided on the hub l2, which serves as a cam for moving the member downwardly, as the lever H is moved rearwardly, thereby permitting the finger 42 to move downwardly by virtue of the force of gravity acting on the weight 30.

When the translating device I5 is conditioned for recording, it is important that the weight 30, which is interposed between the casing 20 and the record 4, be maintained free of the circular casing 20. In order that such relative position.-v ing of the weight 38 to the casing 28 is maintained during recording, it has been the practice to provide the reproducer stylus biasing means with a polished spherical ball 5! (see Fig. '7) which is mounted on the under side of the weight 3|), in advance of the recorder stylus 29, and adapted to slide on the record 4 and thereby support the weight 30 in a substantially fixed position relative to the record 4. The weight. 3|] is then also maintainedin a substantially fixed position relative to the casing 2|] since the casing is also supported by the record, as by the engagement of the recorder stylus 29 with the record 4. Such engagement of the ball 59 with the record 4 is frequently found objectionable for reasons hereinbefore mentioned. I

It is a purpose of this invention to provide suitable means, automatically operated incidental to the operation of conditioning the phonograph or translating device EB for recording, for preventing the ball 50 from bearing upon the record surface during the recording operation. These means operate to support the reproducing stylus biasing means in a position free of the record and preferably at a predetermined distance from the same. For effecting such results we provide a suitable actuating member which is adapted to coact with a suitable device, provided on the weight 34, and by such coaction move the weight to a proper position withrespect to the record 4, as the control lever H is moved forwardly ,to condition the translating device for recording. The device provided on the weight 30 for coacting with the actuating member, and the means for properly moving the actuating member, as by the forward movement of the control lever H, are each herein described in various forms. In each form the actuating member is operated by means which are conditioned for operation by the movement of the,

control lever I! through the end portion of its forward travel to recording position. Moreover, in each form these means may be operated by energy which is stored incidental to the operation of moving the control lever H from recording position to neutral position. A preferred embodiment of these means is now described in effecting such operation of the weight there isprovided an actuating memberfil which is pivoted, as by thepin 52, to a bracket 53 suitably secured to the carriage this actuating mem-. ber being provided with a roughened or serrated face 5| which is adapted to cooperate with the weight 30 in a manner hereinafter explained.

Reference being bad to Figs. 4, 5 and 6,- it

able form, which is pivotally mounted on the weight 39, as by the pin 35 which holds the stylus arm 34. This bracket is provided with a lug portion 55 having an aperture for holding a suitable advance ball 55, and is normally resiliently held in a downward position by means of a torsion spring 51 disposed about the pin 35. Thus, by these means the weight 3!] is resiliently supported at a predetermined distance from the record whenever the weight is lowered so that the ball 56 is brought into a recordcontacting position.

In order that the weight 30 may be substantially maintained in such position relative to the record and have its related parts, such as the advance ball 56, fully free of the record 4, as by a suitable movement of the actuating member 5|, the bracket 54 is provided with an extension 58 having a cam face 53' at its end, as shown in Fig. 5. This cam face is adapted to coact with a pin 59 carried by a slidable member fill. The member 68 is slidably supported for movement relative to the weight 30 by means of an apertured bracket 6| and an apertured flange 30" on the weight 30 through which the member 60 passes, the bracket 6| being secured to the weight 30 by a screw 6|. Forward movement of the member 60 is limited by the engagement of the pin 59 with the inner side of the flange 30". The member 60 is normally retained in its most forward position by reason of a spring 62 located on the underside of the weight 30 and retained in place by a screw 62. When the member 80 is in such forward position, the lowered position of the downwardly urged bracket 54 is defined by the engagement of the pin 59 with the came face 58', as shown in Fig. 5.

A rearward movement of the member 6|] will cause the bracket 54 to be swung upwardly, as by the sliding engagement of the pin 59 with the cam face 58 on the extension 58. In the operation of our invention such rearward movement of the member 50 is effected by means of the actuating member 5|. In order that the weight 30 may be substantially held in fixed position during the rearward movement of the member 60, this member is suitably extended and provided with a knife edge 60', at its forward end, and the actuating member 5| is provided with the serrated face 5| adapted to engage the edge 60. Such engagement is adapted to occur when the radial line from the pin 52, about which the actuating member 5| is pivoted, to the point of contact between the slidable member 60 and the actuating member 5|, is substantially normal to the longitudinal axis of the member 60.

In order to insure that the biasing weight 33 will be supported in a substantially predetermined position with respect to the record 4, the weight 30 and bracket 54 are first permitted to move downwardly until the weight is supported by the record 4, as by the contact of the ball 56 with the record; the weight 3|! is then maintained in such supported position, as by the engagement of the knife edge with the serrated face 5|", while the bracket 54 is moved upwardly with respect to the weight to free the ball 56 of the record. For this reason the finger 42, which controls the weight 30, is adapted to move downwardly, free of the weight 30, during the first portion of the forward travel of the control lever H from neutral position; the actuating member 5| is then operated bythe forward travel of the control lever through its remaining portion,

The means for eifecting'the proper movement of the actuating member 5|, in this preferred embodiment, comprises a weight 63 which is secured to a shaft 64 by means of the screws 65. The shaft 64is journalled at one end in the left end wall of the channelled portion l", and at its other end in a bracket 66 secured to the wall of the carriage by the screw 61. Secured to the shaft 64, adjacent to the bracket 66, is a plate 68 having a laterally extending pin 69 adapted to engage the cam face 5| provided on the rear edge of the actuating member 5|. Swinging downward and upward movements of the weight 63 will therefore operate the actuating member 5| respectively forwardly and rearwardly by reason of the cooperation of the pin 59 with the cam face 5|, this cooperation being suitably maintained by means of a spring 10 providing a biasing force of the actuating member 5| against thepin 69.

Substantially diametrically opposite of the pin 69 on the edge of the plate 68, there is provided a cam face 68 which 'coacts with a laterally extending pin ll carried by a collar 12. The collar 12 is secured to the sleeve 38, as by the set screw l2, and thus it turns in unison with the control lever When the control lever H is in its most forward position, the weight 63 is adapted to be in its most downward position wherein it is maintained by the engagement of the pin 7| with the cam face 68'. As the control lever is moved through the first portion of its return travel from recording position to neutral position, the weight 63 is moved to its upward position, by the coaction of the cam face 68 with the pin 1|, thereby effecting the storage of potential energy therein. In order that the weight 63 may be held in its upward position, as the control lever is moved through the remaining portion of its return travel, there is provided a latching pawl 13 which catches a tab 74 secured to the'weight 63 by the screws 15. The pawl 13, as shown in Fig. 2, is pivoted about a pin '56 which isjournalled in the left end wall of the channelled portion The latching pawl 13 engages the rearward edge of the tab 14 and is biased thereagainst for supporting the weight 63 in its upward position, the biasing action being effected by means of a spring H. In order that the pawl 13 may be released from the tab- 14 by the movement of the control lever through the end portion of its forward travel, there is provided another pin 18, on the collar 12, which engages the pawl 13 to unlatch the same from the tab 14 as the lever nears the end of its forward travel. The weight 63 will then move downwardly, as by gravity, until it is stopped by the engagement of the pin 1| with the cam face 68. Such downward movement effects the release of theenergy stored in the weight and causes a forward movement of the actuating member 5|.

The operation of the preferred embodiment of our invention is thus briefly as follows: As the control lever I! is moved through the first portion of its forward movement from neutral position, the fingers 4| and 42 are moved downwardly, thereby permitting the casing 20 and the reproducer stylus biasing means'to move downwardly so as to rest upon the record 4. As the control lever H is moved through the remaining portion of its forward travel, the pin 18 engages the pawl 73 to move it rearwardly and thereby release the weight 63. The weight 63 then moves downwardly to effect a forward a pivot for a light movement of the actuating member 5|, as by the engagement of the cam face 5| with the pin 69. The forward swinging movement of theactuating member 5! causes it to engage with the slide member 50 and move it rearwardly. Such rearward movement effects an upward swinging movement of the bracket 54, thereby freeing the reproducer stylus biasing means of the record 4.

As the control lever .H is moved through the' first portion of its return travel from recording position, the pin 78 on the collar l2 moves forwardly permitting the pawl to move into a lock ing position. Simultaneously therewith the pin 7, also on the collar I2, engages the cam face 68' tomove the Weight 63 upwardly. As the weight 63 moves upwardlythe tab 74 slides over the pawl I3 to lock the weight in position, and the actuating member 5i moves rearwardly to cause the biasing weight 3i to rest again on the record 4. As the control lever is then moved through the remaining portion of its travel the fingers II and 42 are moved upwardly to return the casing 26 and biasing weight 30 to their upward positions.

.:Reference being had particularly to Figs. 7 and8 there will be seen a modified form of reproducer stylus biasing means having a weight 300. which, as the translating device is adjusted into a recording position, is first moved into aposition wherein it is supported by the record and thereafter moved a predetermined distance from the record. The weight 30a is provided with an advance ball 50 rigidly mounted on the under side of the weight. As the Weight 39a is moved downwardly the ball 58 is adapted to engage the surface of the record 4 and thereby support the weight. In the flanged portion 300."

of the weight 30a, thereis provided a bifurcatedwhich passes a pin 8i serving as U-shaped tilting lever 82. This tilting lever extends downwardly and is provided with ,a forwardly curved portion adapted to coact with the serrated face 5Ia' of an actuating lug through .member 5Ia. Normally the lever 82 is resiliently held in a counterclockwise direction by means of a spring 83. However, as the actuating memberv 5 la is moved forwardly, its serrated face 5Ia. lockingly engages the tip of the lever 82 to effect a clockwise movement thereof, thereby imparting an upward tilting movement to the weight 30a from its position wherein it is supported by the record.

In this modified form of reproducer stylus biasing means the actuating member appears in slightly changed form from the aforedescribed member 5| and is given the reference character 5Ia. For operating the actuating member 5Ia there may be provided meanswhereby energy is stored with the return of the control lever from recording position. These means are then conditioned, as by the movement of the control lever II through the end portion of its forward travel, so. thatv the stored energy maybe released to effect the proper movement of the actuating member 5Ia. In this modification of our invention the energy release is effected by the power or energy supplied by the driving means of the phonograph; wherefore this modified form of our invention is now described in detail.v

adapted to coact with the tilting lever 82. The actuating member has-at its hub, a V-shaped tain the actuating member 5m in a rearward position. When the control lever II is in its forward position, as shown in Fig. 9, the notch 85 is adjacent the tip of the cam 84 so that the actuating member 5 la. may then move forwardly.

At the lower end of the actuating member 5hr.v

there is pivotally connected a bifurcated member 8?, as by the screw 88, in which is threaded a horizontal rod til extending rearwardly through an apertured front wall of a bracket which is secured to a side wall of the carriage I by means of the screws 9|. The rod 89 may be adjusted with respect to the bracket 90, as by turning the rod in the member 87, and locked in position by the locking nut S I At the forward end portion of the rod 89 there is secureda collar 92, as by the pin 92. Disposed aboutthe rod 89, between the collar 92 and the front wall of bracket 90, is a compression spring 93 biasing the actuating member 5ia forwardly. Thus,

' when the control lever I I and the actuating member 5Ia are in their respective forward positions, so that the cam 84 engages the notch 85, it will be seen that a rearward movement of the control lever II from such forward position toneutral position, will cause the actuating member .510. to be moved rearwardly to effect a storage of energy by the compression of the spring 93. The actuating member is normally held in such rearward position by means of a latching pawl 94 which is adapted to engage a notch 84 provided in the rear end portion of the rod 89. The pawl 94 is biased in a clockwise direction by means of a spring 555 and is pivoted to the bracket 90, as by the pin 96. Thus, the actuating member am is not permitted to move forwardly with the forward movement of the control lever II the actuating member is however conditioned so that it may move forwardly, as by the force of the spring 93, upon the release of the pawl 94 from thenotch 94'. I

Although it is not important that the reproducer stylus biasing means be removed from contact with the record 4 when the translating device IB is conditioned for recording and the record 4 is not being rotated, it is important that the biasing means be moved free of the record upon the initial rotation of the record subsequent to the moving of the biasing means into contact so that they rotate simultaneously. Since the,

feed nut 6 is brought into engagement with the feed nut 5 with the terminal movementof the control lever II, and the biasing weight is brought into engagement with the record 4 'by the forward movement of the control lever II immediately preceding such terminal movement, the weight 300. is lifted from the record with the initial rotation of the record following the contact of the ball 50 with the same.

For effecting the release of I the pawl the notch 94 there is provided a principally upwardly extending arm Blpivoted about a pin 91 94 from and having a forwardly inclined upper end portion which is adapted to engage a downwardly extending arm 98 integral with the pawl 94. The arm 91 is biased forwardly by means of a tension spring 99 connected between a pin 99' on the arm 97 and a lug portion 99' of the bracket 99 located forwardly of the arm. The forward movement of the arm 91 is however limited by a pin I99 secured to the bracket 99. When the arm engages the pin I99 the pawl 94 is out of engagement with the notch 99. In order that the proper forward movement may be imparted to the arm 91, there is provided an arm I9I, which is pivoted to the arm 91, by means of the screw I92. The arm I9I is extended forwardly and is pivoted to a block I93, as by a pin I93, which is adapted to engage the feed screw 5. At the under side of the block I93 there is provided a horizontal plate I94 in the form of an extension of the bottom leg 6" of the U-shaped bracket 5' which carries the feed nut B, as shown in Fig. 10. The arm IIlI is biased downwardly by means of a light spring I96 coiled about a pin l9l, provided on the arm 91, and constrained by the pin 99 on the arm 9'! and by a pin I98 on the arm IN. The block I93 is therefore urged downwardly upon the plate I 94, as by the downward biasing of the arm I III, and abuts against the feed screw 5 (whenever the feed nut 6 is in engagement with the feed screw 5), as by the forward biasing of the arm 97. When the block I93 is in such position the arm 9'! is held or restrained, as against forward movement, in a position free of the arm extension 98 of the pawl 94. However, as the feed screw 5 is rotated in its normal clockwise direction, as seen in Fig. 9, the friction between the feed screw 9 and block I03 is sufficient to carry the block I93 with the feed screw 5 through a small angular displacement into an upward position such, for example, as is shown by the broken line in Fig. 9. Such upward movement of the block I93 permits a forward movement of the arm 91. As the arm 9'! moves forwardly the pawl 94 is released from the notch 94 by the engagement of the arm 91 with the arm extension 98. In order that the arm I 9| may be suitably guided as it is rocked upwardly in the upward movement of the block I93, there are provided the pins I99 secured to the plate I94 and extending upwardly along the respective sides of the arm I91.

In order that the arm 97 may be suitably moved rearwardly free of the arm 98 of the pawl 94 as the feed nut 6 is moved out of engagement with the feed screw 5, there is provided a link member III] which is pivotally connected at one end, by the screw III, to a downwardly extending lug II 2 of a bracket II 2' secured to the bottom side 6 of the U-shaped bracket 6' by the pins I05. At the other end of the member II9 there is provided a longitudinal slot II3 through which passes a headed pin H l that is secured to the arm 91.

It is thus seen that, when the control lever II is in neutral position, the actuating member is locked in a rearward position by the engagement of the pawl 94 with the notch 99. As the control lever II is moved forwardly the notch 85 of the collar 86 is moved adjacently of the cam 84 so that the actuating member 5Ia. may move forwardly, as by the spring 93. At the same time the block I93 is brought into engagement with the feed screw 5. With a rotation of the feed screw 5, the block I 93 is moved upwardly, thereby rendering the arm9'I free to be moved forwardly, as by the spring 99, to release the pawl 99 from the notch 94. Upon the release of the pawl 99, the actuating member am is moved forwardly to engage the tiltingrlever 82 and to thereby move the weight 39a away from the record 4. As the control lever II is returned to neutral position, the actuating member 5Ia is moved rearwardly and the spring 93 is thereby compressed, as by the sliding engagement of the notch 85 with the cam 94; the return movement of the control lever II also causes the feed-nut 9 to be moved out of engagement with the feed screw 5, as hereinbefore explained. By reason of the coupling between the feed nut 6 and the arm 9?, as by the link II9, such disengagement of the feed nut from thefeed screw effects a rearward movement of the arm 91. As the arm 9i is so moved the pawl 94 engages the notch 95/ to lock the actuating member 9Ia in its rearward position.

Reference being had to Fig. 11 there will be seen another modified form of mechanism for suitably operating the actuating member Ela. In this construction there is employed the actuating member am having the cam 84 adapted to coact with the notch 85 provided in the collar 86.

'There is also pivotally connected to the lower end of the actuating member file, as by the screws 88, a horizontal and rearwardly extending arm 99a which is slidably supported at its rearward end portion by means of a bracket IE9, secured to the carriage I by the screw II5. The rod 89a is provided with an intermediately located collar i is secured thereto by the pin II'I. Between the collar I I9 and the bracket H5, and disposed about the rod 89a, is a compression spring II8 biasing the actuating member 5m forwardly. The collar IIB has an upward extension to which there is pivotally connected an arm H9, as by a pin I29, having a plunger IZI at its rearward end. The plunger IZI is adapted to coact with a cylinder I 22, which is pivoted to the carriage I by the pin I23, for forming a suitable dash-pot I24,

The operation of this modified construction is thus as follows: As the control lever II is moved forwardly to recording position the notch 85 is moved adjacently of the cam 8 4, thereby permitting the actuating member 5! a to move forwardly, as by means of the spring II8. Such movement will however be delayed, as by the action of the dash pot I29. The biasing weight 39a is thus permitted to reach a position wherein it is supported by the record before the actuating member 9Ia moves forwardly to raise the weight from the record. As the control lever II is returned to neutral position the actuating member 5Ia is moved rearwardly by the engagement of the notch 85 with the cam 84. Such rearward movement effects a storage of energy, as by the compression of the spring H8, for suitably moving the actuating member 5Ia forwardly.

Although we have described and illustrated our invention'in several forms, it will be obvious that many other forms and modifications of the same may be employed without departing from the scope of our invention which we now undertake to express according to the following claims.

We claim:

1. In a phonograph operable to record on and reproduce from a record and having a translating device including a frame, recorder and reproduce styli respectively movable into, record-contacting positions to condition said device for recording and reproducing, and a biasingmeans III for saidreproducer stylus movably mounted on said frame and urged towards the record and released for movement into contact with the rec.- ord when said device is conditioned for recording: the combination of a control means movable into recording and reproducing positionsto respectivelyeffect-recording and reproducing conditions'of said translating device; and means operable tocause said biasing means to-be supported free of the recordduring the operation of recording comprising a supporting member on said famemovable transversely of the direction of movement of said biasing means into engagement with the same," and means operated by said. control meansfor controlling the movement of said supporting member. I a N 2. In a phonograph having a support for a record 1 and a translating device including a frame, recorder and reproducer styli respectively movable into contact withthe record to condition said device for recording and reproducing-and a biasing means for said reproducer stylus movably mounted on said frame andurged towards the record and released for movement into contact with the' record when said device is conditioned for recording? the combination of a control -me'ans movable into recording and reproducing positions to respectively condition said translating device for recording and reproducing; a member movably mounted on said biasing-means; an actuating member on said frame movable to coact with said member to render said'biasing means, when'the same is released, free of the record; and means, controlled ating member. I

"3. In a phonograph operable to record on and reproduce from a record and having a translating device including a frame, recorder and reproducer stylirespectively' movable into recordcontacting positions to' condition said device for recording and reproducing, and. a biasing means for said reproducer stylus movably mounted on said frame and-urged towards the record and by said control means, for controlling said actureleased for movement into contact with the record when said device is conditioned for recording: the combination of a control meansmov able into recording and reproducing positions to respectivelyefiect recording and; reproducing conditions; of said-translating, device; a member movably mounted on said biasing means; an actuating member on said frame adapted to coact with said member to render said biasing means, when the same is released, free of the record; and means effective when said control means is in recording position to maintain said actuating member in coacting relationship with said member during the operation of recording.

4. In a phonograph operable to record on and reproduce from a record and having a translating device including a frame, recorder and reproducer styli respectively movable into recordcontacting positions to condition said device for recording and reproducing, and a biasing means for said reproducer stylus movably mounted on said frame and urged towards the record and released for movement into contact with the record when said device is conditioned for recording: the combination of a control means movable into recording and reproducing positions to respectively effect recording and reproducing conditions of said translating device; a member movably mounted on said biasing means; an actuating member on said frame biased into coacting relationship with said member to render producer styli respectively movable into recordcontacting positions to condition said device for recording and reproducing, and a biasing means for said reproducer stylus movably mounted on said frame and urged. towards the record and released for movement into contact with the record when said device is conditioned for recording: the combination of a control means movable into recording and reproducing positions, to respectively efiiect recording and reproducing conditions of said translating device; a lever on said biasing means; an actuating member onsaid frame movable to engage said lever to move said biasing means out of contact with the record; and means, controlled by said control means, for controlling the engagement of said actuating member with said lever.

' '6. In" a phonograph having a support for a record and a translating device including a frame, recorder and reproducer styli respectively movable intorecord-contacting positions to condition said translating device for recording and reproducing, and means movably mounted on said frame and urged towards the record to bias said reproducer stylus into record-contacting position, said biasing means being rendered free to move towards the record when said translating device is conditioned for recording: the combination of a control means movable into recording 7 and means, operated by said slide, for moving said record-contacting member-away from the record,

7. In a phonograph operable to record on and reproduce from a record and having a translating device including a frame, recorder and reproducer styli respectively movable into recordcontacting positions to condition said device for recording and reproducing, and a biasing means for said reproducer stylus movably mounted on said frame and urged towards the record and released for movement, into contact with the record when said device is conditioned for recording: the combination of a control means movable into recording and reproducing positions to respectively effect recording and reproducing conditions of said translating device; an actu-,

ating member on said frame adapted to coact with said biasing means to maintain the biasing means free of the record when the biasing means I reproduce from a record and having a translating device including a frame, recorder and reproducer styli respectively movable into record-contacting positions to condition said device for recording and reproducing; and a biasing means for said reproducer stylus movably mounted on said frame and urgedtowards the record and released for movement into contact with the record when said device is conditioned for reu cording: the combination of a control means movable into recording and reproducing positions to respectively efiect recording and reproducing conditions of said translating device; an actuating member on said frame adapted to co act with said biasing means to maintain the biasing means free of the record when the biasing means is in released condition; driving means operable to feed said translating device along the record; and means responsive to said driving means when said control means is in recording position for placing said actuating member in coacting relationship with said biasing means, whereby to maintain said biasing means free of the record during the operation of recording.

9. In a phonograph operable to record on and reproduce from a record and having a translating device including a frame, recorder and reproducer styli respectively movable into record-contacting positions to condition said device for recording and reproducing, and a biasing means for said reproducer stylus movably mounted on said frame and urged towards the record and released for movement into contact with the record when said device is conditioned for recording: thecombination of a control means movable into recording and reproducing positions to respectively efiect recording and reproducing conditions of said translating device; an actuating member on said frame movable to coact with said biasing means to move the latter out of contact with the record; means, responsive to the movement of said control means into recording position, for moving said actuating member into coaction with said biasing means; and movement-resisting means, associated with said actuating member, for delaying the coaction of said actuating memberwith said biasing means until the biasing means has first contacted the record.

'10. In a phonograph adapted for recording on i and reproducing from a record and having a and reproducer styli respectively movable into record-contacting positions to condition said device for recording and reproducing, and a biasing means for said reproducer stylus movably mounted on said frame and urged towards the record: the combination of control means movable into recording and reproducing positions to respectively effect recording and reproducing conditions of said translating device; means operated incidental to the movement of said control means into recording position to render said biasing means free to move into contact with the record; an actuating member on said frame operable to engage said biasing means to move the same out of contact with, and through a predetermined distance from, the record; and means for controlling the operation of said actuating member comprising means for holding said actuating member out of engagement with said biasing means, rendered inoperative by the movement of said control means into recording position, and means associated with said actuating member and adapted to cause the operation of the latter to be delayed until said biasing means has first contacted the record.

11. In a phonograph adapted for recording on and reproducing from a record: the combination of a recorder stylus and a reproducer stylus; control means having recording and reproducing positions for placing said recorder and reproducer styli respectively into record-engaging positions and including a biasing means urged towards the record, said biasing means being spaced from the record and rendered effective to bias said reproducer stylus into record-engaging position when said control means is in reproducing position, and being released for movement into contact with the record as said control means is moved into recording position; means, comprising a lever pivoted on said biasing means and an actuating member having an irregular face adapted to engage an end portion of said lever, for moving said biasing means out of contact with the record; and means, automatically operated incidental to the movement of said control means into recording position, for placing said last-mentioned means in operation.

CHARLES HUENLICI-I.

HEINRICH F. MAX GRAMANN.