US1835794A - Phonograph - Google Patents

Description

Dec. 8, 1931. c. P. MADSEN PHONOGRAPH Filed Ma 1, 1925 4 Sheets-Sheet l I LNVENTOR. 01mm 61mm B Y JTTORNEY Dec. 8, 1931. c, MADSEN 1,835,794

PHONOGRAPH Filed May 1, 1925 4 Sheets-Sheet 2 "rmmmnm i Mi 1. M

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Mam BY 01 TTORJ E Y Dec. 8, 1931-. Q bs I 1,835,794

PrionoeRAPn Filed May 1, 1925 4 Sheets-Sheet 3 Dec. 8, 1931. MADSEN 1,835,794

PHONOGRAPH Filed May 1, 1925 {Sheets-Sheet 4 INT EN TOR.

My (9W Patented Dec. 8, 1231 marine srarns earsnr "orr cr. 1

CHARLES E. MADSEN, OF NEW YORK, N. Y., ASSIGNOR, BY 'ASSIGNMENTS, TO

VIZLLIAIEZ V7. VARNEY, 0F BALTIEEORF', M'ARYLAND PHON'OGRAPH Application filed May 1,

The object of my invention is the-construction of an improved portable phono graph. 2

A further object of my invention is a new process of transmitting vibrations.

A further object oi' my invention is the providing in a phono raph an improved reproducing means.

A further object of my invention is the providing in a phonograph an improved support for the reproducing means.

A further object of my invention is the rovidin in a hono ra h means for foldp b o p come within the scope or the claims hereunto appended.

While several in this application maybe used in other structures, and in consequence thereof, form the subject matter of other applications. the coordination of the same in an organized machine of the character described is new and as such, are claimed herein in such organization, as will hereinafter appear.

I would rei to the co-pending applications and patent as follows: Wave repro ducing device and process concerning the same, filed August 5th, 1924, Serial No.

2 50,1 52; Method and means of transmitting 1d February 2nd, 1925, Serial No. thod of supporting phonograph re- .ystem, filed February 2nd, 1925, o ii; issued Sept. 24th, 1929, Pat 1,!29.

ent No. 2

In the draw embodiment of my invention, Figure 1 shows my improved phonograph in perspective, open, asembled, and in playing condition, he record in place on the turntable, and a spare vibratin member stored in the cover;

24. ings of the herein described 1 novel means GIIIbOClli-E'Cl.

1925. Serial No. 27,206.

Fig. 2 is a plan view of the phonograph without the case or cover in condition for.

playing, a record being shown on the turn enlarged. vertical section of the supporting arm swivel mounting taken on line 5+5 of Fig. 0; Fig. 6 shows the pin which is used in the swivel mounting as shown in 5, but

in its bowed condition before entering where n by a spring-tight fit is secured to preventbacklash or vibration, thus insuring quiet action; Fig. 7 is a View of the subject matter shown in Fig. 4, but taken at right angles to Fig. 4, as shown by the arrows 77, and shows particularly'the limit of actionin its plane of movement, said movement being substantially at right'angles to that shown in Fig. 4;; Fig. 8 is an enlarged detail crosssectionalview of the reproducer head; Fig. 9 is an enlargedfragmentary sectional view in detail of the reproducer head or mechanismtaken on line 9-9, of Fig. 2; Fig.

10 is an enlarged sectional view of the vibrating member securing means showing in elevation a part of the needle carrying mecha nism taken through line 10-10 of Fig. 9; Fig. 11 is a cross-sectional View taken through line 11-11 ofjFig. 9, and shows particularly the means for securing together the reproducenhead; Fig. 12 is a detail view of the reproducer operating member which is being wound with the rubber band under high tension; and Fig. 13 showsthe reproducer operating member in a modified surrounding medium as the same is being stretched or positioned thereon and consists of a vulcanized caoutchouc tube 56 .01? rather small size compared to the reproducer operating member, so that when the same is pulled thereon it is stretched or in high tensioned condition. 7

manner.

Similar numerals refer. to similar parts throughout the several views.

l is the case. 2 is the cover ofthe case which is operably hinged to the case 1. 3 are the retaining springs or members in the cover, underwhich are carried or secured the blankedvibrating member-4. I

5 is the securing pin forfsecuring' the vibrating member together and operates in raised and depressed portions 6 and 7. Blanked vibrating member 1 is provided centrally with an opening 8 through which its securing means operates and preferably is formed so as to avoid double thickness of the vibrating member blank under the securing means. In the construction shown the pin in its functioned position is an element of a cone, the pin being preferably pointed at one end and formed into a handle at the other. The vibrating member 4 may be of any suitablematerial. For this purpose I have. found that any light rigid material will work; e. g. vulcanite, vulcanized fibre and celluloid. l have found that the best results are produced by impregnating a grade of paper known as 70 lb. jute with rosin cut in bezol to stiffen the paper and then waterproof same by coating with a thin varnish.

' Referring particularly to Fig. 10, 9 acone member secured to rocker arm 10 by means of stud pin 11 and provided with a shoulder and lock nut 12. I have found that the successful operation of my phonograph depends in a large degree upon the mass of the vibrating parts or elements, which are vibrated by the record. In the construction of the actual machine I have discovered that an alloy of alluminum known as Duraluminum gives very satisfactory results. 13 is a conjugate cone member fitting within cone 9, and between these two cone members 9 and 13, is secured the formed upcones 9 and 13 is produced toavoi'd vibration at this point and it also tends to rigidify vibrating member 4. Upon'tightening up cones 9 and 13, the two cones become parallel or of the same angle, thus giving a rigid structure. 1 1 is a knurled securing nut for operating upon stud pin 11 to secure the said two cones, .9 and 13, together, and is operably. secured to cone 13for convenience in handling said cone 13, in a swivel Tliethread on stud pin ll upon which knurled nut 141 operates is of very memes coarse pitch for convenience. 1 do not limit myself to the above construction or angles.

()n cover 2 is provided a spring fastener 15, provided with an engaging tongue 16 to engage the member to which it is secured a in order to prevent side motion of same so that it will always register with the other member it is to fasten. On spring fastener is catch 17, which engages with the conjugate member or opening in the partrto be secured.

91 is a rubber suction foot, (see Fig. 5) within which is holding washer 92. 93 is the legor spacer secured to the top plate 18, shown inl ig. 2, supporting it on case 1, and has secured to it holding washer 92 by screw 94-.

95 is the handle for carrying the case shown in Figs. 1,2, and 3, and is supported by shouldered screw 96, which screw threads into top plate 18 through a hole in case 1 and secures flange 20 of: the top plate 18 to case 1.

Referring to Fig. 10, 18 is the top plate 01' the phonograph proper. I have found that a very satisfactory result is obtained by stamping the top plate out of sheet metal. This enables me to proride therein various raised portions, stops, etc. 19 is an annular n oead.

F has stiflens the top plate and further has a tendency to prevent any possible vibra-' tion of same or warping which might occur from the various strains exerted upon said top plate.

in the central portion of top plate 18 is raised portion 21 in which is secured bearing 22, in which operates turn-table spindle 23. llear one corner of the top plate 18 is a normed-up portion 2 1 forming a bearing for tne winding shaft 25. 26 and 27 are 'lanced projections forming stops to limit the movement of supporting means 28. 31 are marks in the top plate 18 indicating the correct position of control handle 105. Cover is provided with raised projection 32, which, when "he cover is in closed position, acts as a supcrt for stored records, eeping the same e from the turn-table, in connection with 1e other projections described later. This s espec'al yshown in Fig. 2, said cover beng pivot-a ly mounted on top plate 18. 33,

'eceptacles, 36 is a reposition, thus protecting the plate 18 by bolt 37 provided with lock nuts and compression spring washer 39. On upporting arm 28 is projection l0 forming one of the supports for the records stored over the turn-table, keeping the same clear of said turn-table when said supporting means 28 is in housed or closed position; cover 12 which covers needle receptacles 34 and when said arm is housed is secured to said supporting means by lanced projections from said cover embracing said supporting means.

ill!

Referring now to Figs. 8, 9 and 10, 43 is the pin as shown in Fig. 11 bowed before insertion- 44 is the sleeve which is secured to.

gravity on the reproducer head 48 and its conjugate 49 from exerting too high a pressure on the needle point on the record. The amount of mass necessary for producing the proper inertia for. reproduction is greater than that which the record grooves will stand when the entire weight rests in the grooves. By providing a means by spring 4'? for counter-balancing a part of this weight, the full effect of the mass is utilized in reproducing but the pressure on the record is diminished. It has heretofore been customary to limit the weight of sound boxes or reproducers to between 5 and 6 ounces. I obtain better results by making this mass from 7 to 8 ounces and.

with the counter-balance spring 47 balanced out a little over half of it, thus making the needle pressure between 2 and 8 ounces. The

effect of this counter-balance spring is not only to reduce the surface noise and the wear of the record but also to reduce'the load onv the motor, thereby making it possible to play large records with less motive power than heretofore, and also making the playing more regular. 7 r

Reproducer head 48 is detachably secured to reproducer supporting arm 41 by means of pilot pin 57 and knurled screw 58. The

reproduccr illustrated in Figs. 9, 10, 11 and 19, is the embodiment of a new method of gen erating air waves of sound frequency when operated either mechanically or electro-me than those imparted by the actuating means and thus the timbre and the pitch of the original are more perfectly reproduced.

Referring to Fig. 8, 113 is a handle attached to the reproducer head for the con venience of lifting the same. I

48 is the reproducer head and weight, 49 being its conjugate member, said two members being secured together by screws '50 or other suitable means. 51 is the reproducer The purpose ofthis counter balance spring 47 is to prevent the effect of spindle. This spindle is a part of the rocker arm 10, which may be either integrally or otherwise secured, and in the same structure there is also formed a needle-carrying appliance for needle 55,0onsisting of socket '52having broached corners 53 and 54. 56

is a flexible band I have found vulcanized caoutchouc very desirable for this purpose. It 1s wound on reproducer spindle 51 while being stretched to almost breaking point, and

a. sufiicient amount is wound on to slightly more than fill the hole formed between the reproducer head and weight 48 and the conjugate member 49, then said reproducer head 48 and conjugate member 49 are clamped together thus compressing the substance around spindle 51 whilebeing in its attenuated state. This compression adjusts the reproducer for correct response. This also forms a sound insulation.

Referring to Figs. 9, 10, and 11, (the reproducing system). It will be understood by those skilled in the art that the performance of this'part of the phonograph is influenced very much by the proportions of the parts. The drawings are made practically to scale, showing relative sizes, and a fairly good idea of the proportions will be obtained by knowing that screw 54 is a standard screw used in presentso-und boxes and the hole 52 is broached to take a standard needle to the correct depth. .There must however exist a rather more accurate proportion between the sizes of spindle 51 and the resilient material 56 and the size of the twogrooves in reproducer head 48 and its conjugate member 49, which constitutes the cylindrical cavity in which spindle 51 with its resilient layer coating is compacted by screw 50. If the amount of surface is too small the material will be short lived; if the amount of surface is too great it will cause too great a resistance of the needle point and record wear is the result. If the thickness of the layer is too great the reproduction will be lacking in brilliancy. If too thin a layer of the material is used it will also tend to produce a high resistance of the needle point, but in addition it will be short lived because irregularities in the contacting surfaces will cause cutting or injuring of the material at local points. I have found for instance in the case of using for the resilient member a tightly wound rubber band that the correct size for the spindle 51 is .146" in diameter by 1" long, and the thickness of the rubber band when wound should be .018 and in this case the diameter of the hole in which this spindle goes is made with a #18 (.169) drill, when these two parts are clamped together with a .02 liner which is removed after drilling.

I have found that the best results both as to volume and clearness are obtained by usin vulcanized caoutchouc in a highly stretched condition and then compacted as a resilient member, and that very good results can be obtained with almost any light organic material. I have found, for instance, layers of linoxon adaptable for this use, although not quite equal to that produced by vulcanized caoutchouc. By llIlOXOD I mean a layer of nearly completely oxidized linseed oil.

59 is the turn-table which is secured'to turn-table spindle 23 by screws or'other suitable means 60. Onthe edge of the turn-table 59 is formed aflange 61, theinner periphery of'which flange operatesas a driving means for the governing mechanism as described later. Thevturn-table is covered with felt orother suitable material, the central portion being omitted to have access to the screws 60. The center-of the turn-table is depressed at 62 for stiffening.

Turn-table spindle 23 goes through-bearing 22, which bearing is secured to top plate 18, as heretofore described, and has secured to it set collar 68 to prevent said spindle from becoming displaced upon inversion of the machine, and also has secured to it or formed integral therewith pinion 64, which pinion drives the same, and is driven by gear 65 which-gear is secured to or formed integral with spring housing 66, to which housing is secured the-outer-end of main spring 67 by means of a bracket 68 secured to the housing 66 and providing a means'of carrying a headed stud pin 69 over which the main spring '67 is placed and slid into position. 70 is abracing member which also slips over and is positioned on said pin 69. Bracing member 7 0 when in position, tends to cause.

the main spring in its unwinding to reel oil from its outer layers with comparatively a small amount of sliding of the adjacent convolutions. The other or inner end of main s] ring 67 is secured-to securing sleeve 71 by hooking upon the same. Securing sleeve 71 operates on motor stud 72 and is secured to winding gear 7 3 by projections 74. I have founc that riveting is a quick and convenient method. Stud 72 is provided with an expanped collar 11 1 so located that it provides a lower or down-thrust bearing 'forwinding gear 73 and also provides an upper-thrust bearing for hub 115 which is secured onto motor gear 65 by any suitable means.

75 is a pinion which. drives a gear 7 3 and is operated by winding'shaft 25, to which it is secured by any suitable means.

inding shaft 25is journalled in top plate 18 and has secured on its upper end winding bracket 77, which bracket" is shown in Fig. 2. 78 is the winding crank provided with handle 79, and engaging supporting pin 80, which pin forms the double function of supporting'thecrank while winding, and also engaging thewinding bracket in recess 81,

I thus increasing the rigidity ofthe winding crank, the said winding crank 7 8'being fulcrumed to winding bracket 77 at 82 in an offsetposition to permit the playing of 12" records. The fulcrumed end of winding crank 78 is extended beyond the fulcrum within the jaws of the bracket to provide a stiffening means Referring to Fig. 3, a washer16 of suit able material,i. preferably brass, is provided on winding shaft 25 between winding pinion 75 and the top plate 18.

76 is the winding check spring and operates on winding shaft 25 to prevent the same from unwinding, not being secured thereon other than by its own tension, and the other end of such spring being fastened to flange 20 of the top plate 18, as shown in Fig. 3. VVinding'crank 78 when in closed or inoperative position is of such a height and in such a position to support in conjunction with the other record supporting means the records which maybe stored over the turntable parallel therewith but not touching the same. which is clearly shown in 3. In top plate '18 is cup 83 in which handle 7 9 fits when in an inoperative or stored position, thus insuring the roper location for the same to support the said records and being within thelimit of the box'when the cover is placed thereon. 1

I have found that in light phonographs a considerable difiiculty is experienced in windupthe driving spring owing to the light ness of the machine and its slipping over a surface upon which it may be placed. To overcome this I have devised suction feet, upon which the phonograph or its case rests. These suction feet when on smooth surfaces form an air suction and hold so that the phonograph may be wound without touching th'esame except by the handle.

84 is the bottom plate which is secured to top plate 18 by pillars and securing means 85 and by motor stud 72, thus forming a rigid structure for the support of the motor stud and of the lower bearing 86 of the turntable spindle 28.

, Spring housing 66 is formed by lancing gear 65, which method I have found very satisfactory. The lower end of turn-table spindle 23 operates in bearing 86 and is supported on ball 87 in the bottom of said bearing 86. Said bearing 86 is secured to bottom plate 8 1. 88 is a. fibre washer between the top plate 18 and the winding gear 73 and is provided with an oiling hole 89. 90 is a paper washer between spring 67 and the driving gear 65 to keep dirt out and to keep grease in.

I have discovered an entirely new system of driving, or transmititng power, which I call the air suction drive.

The manner of operation of'my new air suction drive not illustrated in which the means for this wheel. It will be seen that this wheel is so positloned with relation to the rim 61' that it is under a slight compres- Ipreferably make this Wheel of any soft organic material either adapted to having formed or already possessing a large number of cup-like cavities in its rim. I preferably use vulcanized caoutchouc in which case I form the cups by moulding.

I have also found that a wheel cut from sheets of sponge rubber having a thin solid. wall on each side is satisfactory. Thiswheel, when mounted as described develops small amount of frictional contact but by far the larger part of the torque is developed by the suction of cup-like cavities.

It will be seen that as thecup approaches the rim member 61 it is compressed and par of the air forced out, which causes a partial vacuum and a clinging of the wheel.

The vacuum cups furthermore hold so tenaciously to their co-acting surface that if the governor be suddenly stopped it stops the turn-table almost instantly with practically no slippage.

The governor and its driving means not shown gain several advantages by driving the governor from the edge of the turn-table;

it increases the regularity and quietness of any spring motor so greatly that I'am en-' abled thereby to eliminate the usual ackshaft or worms and drive by a single reduction from the spring barrel to the turn-table shaft. This fact also enables me to eliminate intermediate gearing between the winding gear and spring barrel. I thus produce a, very simple, very quiet, and highly eiticient motor.

The best results are obtained, however, byusing my new air suction or vacuum cup drive set forth more particularly in my copen application filed February 2nd, 1925. Serial Number 6,414.

A have discovered, that by making a driving wheel of soft. preferably organic material either already having in its surface or being adapted to having formed in its surface a large number of small cuplike cavities, a new result is obtained. The increase in mechanical eflicienc-y without slippage by this means of transmitting power is so great that I am enabled by its use to drive the governor much faster than formerlv from the edge of the turn-table, smaller than standard. and at the same time require less motive power than motors heretofore used. It is furthermore absolutely silent.

I prefer to make this wheel by moulding a ring of vulcanized caoutchouc forming the cuplilre cavities in its outer rim. I preferably mount this ring in two members so shaped that when compressed toward each 'tothe rubber stamp trade as cushion.

other they will cause the ring to expand. This construction is shown in Fig. 2 in which 98 is the formed rubber ring, provided with compression washers and adjusting screw. Fig. '37 isa plan'view of this vacuum cup drive in action with a part of the top washer 99 removedshewing the relation of the vacuum cups to its co-acting rim 61 of the turntable. Itwill be seen that as. the wheel revolves the cups are slightly compressed producing a partial vacuumin those which are leaving thernn, causing themto clean their tube. The amount of power consumed to produce thisfefi ect is many times less than that necessary to Obtitlll the 'samedegree of traction with a friction drive.

I may also make this wheel by punching discs out of a grade of sheet rubber known This is. a sponge rubber. with thin outside solid walls and a disc cut from ithas cup-like cavities in its edge similar to those illustrated.

Referring now to the governor construction shown in Fig. 2. 10.2 is the governor casing on the inner periphery of which is chased orformed a coarse pitch thread 103, preferably of at least 4t leads, toenable quick action of a speed control disc 104:. v The speed controlling disc is threaded to fit thread 103, disc 10% being operated by control handle and pointer 105, Whichis secured to said disc by an adjusting means. The disc104: has a slot 106 whereby [to permit adjustment of the disc with regard to the pointer so that the same may correspond with the speed marking on the top plate. Said disc is also provided with an opening in which the governor springs 109 operate. This control handle is also provided with the brake 107 for stopping the turntable. j 1

Revolvablyattached to governor shaft 97 are governor members 108 secured by governor springs 1 09,,which members arepro- 'videdwith rubbing elements 110 for engaging disc 10 1'in operation. As the speed in creases, the members 110 rise against felt surspring 111 which rubs on top plate 18, tending to maintain the handle and pointer in set position. The governor casing is provided with bottom cover 112 which is set in and burred, the other end of the governor casing being integral and provided with openings to permit the action of controller-handle andpointer 105 and the operation of'the governor shaft 97. The governor casing is secured to top plate 18, which also is provided with openings to permit the operation of said handle 105 and shaft 97.

Referring to the governing apparatus balls preferably of steel are inserted in governor members 108' and which contact fwith felt surface 104 which is secured to disc 104. The governor casing 102 may be .slitas shown by slots and bent inward to into thegovernor housing 102 and constitutes the upper bearing of the governor shaft 97. The upper :fiange of-bearing 116 fits removably into a hole in top plate 18 veryacc'urately located on a radialline from the center ofthe turn-tableto its flange 61 of the turntable, thus determining the location of the air suction element '01: Wheel 98 with reference to its .co-acting member 61. the top plate is larger than the suction wheel The hole in 98 for assembly purposes. The governor casing is secured to top plate 18 by any sui ablemeans, such as'screws or the like.

. I have discovered a relation whichpermits of swinging a reproducing system from a pivotat substantially. the same distance from thecenter oftherecord as the diameter of the record and which still maintains the diaphragm or needle rockerin substantial tangency to every groove on the record.

Gil

Referring now to Fig. '2: AB represents a radius from the center through both concentrlc circles. CD represents a line at right angle to AB, commencing from the inner.

record groove. This line now is tangent to the inner circle slnce it 1s at right angles to the radius from the center. At the point of intersection of the radius with the outer circle at E, I also erect a right angle line FE of the same length. This now: also is tangent. I find that if I now support an L- shape arm .or supporting lever at C, whose outer leg .isiequal to CFand the other leg equal to FE, with .the reproducer at E, a substantially tangent position of the rocker needle willbe maintained'to every circle. The rocker needle or diaphragm is tangent at the outer circle by definition. If now as the point E moves across the record toward .D,*'it also goes forward so thatit is contact- --.ing on adiiferent radius in every circle until when it reaches G, if a line be drawn from A through it and'a right angle taken from this line it will be found continually to nearly coincide with the tangent.

Inactual construction it is not necessary tomake the support-arm in the form shown in this figure, but one may instead use that shownuin Fig. 6, in which case the pivot is still C on the same parallelogram. 'The lever, instead of proceeding from C to F is substantially the diagonalof the parallelogram, but the support means for the needle is so arranged at the end that in the case of an ordinary reproducer it is parallel with the line EF.

I have stated above that this arrangement does not produce absolute tangency. The variation at G is about 5' degrees. In progressing across the record then the point E goes slightly further forward making a true tangent. Lengthen the arm FE to a point slightly forward of the true radius AB as E. This position then does not correspond with the absolute tangent line at the commencement of the record, but the variation from true tangency if the line FE be lengthened forward to a point E of such a distance beyond E that when the arm FE travels across the record to G, the axis of the reproduce! will coincide with the tangent to the radius of the inner circle through that point G, then it will be found that the error of tangency of this axis or face of the reproducer with the tangency to the outer circle at point of contact is less than two degrees. In the specific case the lengthening of the line FE amounts to about In practice this latter method works the better. The outer circle is so much larger than the inner one that this slight lack of tangency has no appreciable effect. There are furthermore certain advantages in having the needle slightly forward of the radius which has a tendency to cause the needle to hug one side of the groove. This method also avoids making the side thrust too great.

Having thus described my invention, what I claim and desire to secure by Letters Patcut is:

1. A reproducer for a phonograph comprising a stylus carrying member, a conicalshaped vibrating member rigidly secured to said stylus carrying member and entirely carried thereby, and supporting means for said stylus carrying member to permit a stylus rigidlysecured thereto to follow a record to be played and transmit the vibrations of said stylus to said vibrating memher, said stylus carrying member journalled in said supporting means operative over the .record to be played, the axis of said journal being substantially at right angles to the axis of said conical shaped vibrating member.

2. A reproducer for a phonograph comprising a stylus carrying member, a conical shaped vibrating member rigidly secured to said stylus carrying member so that an element of said conical shaped vibrating member is substantially parallel to a disc to be played and entirely carried thereby, and supporting means for said stylus carrying member to' permit a stylus rigidly secured thereto to follow a record to be played and transmit the vibrations of said stylus to said vibrating mem er, said stylus carrying member journalled in said. supporting means 0perative over the record to be played.

3. In an organized phonograph a reproducer member in part consisting of a Vibrating conical shaped member, a reproducer carrying arm pivoted to swing over a record to be played and carrying said sonically shaped vibrating member, means provided whereby said vibrating member may oscillate around a carrying center on said carrying arm consisting of a journal thereon, and means for mounting said conical vibrating member withreference to said carrying arm so that said carrying arm and an adjacent surface of said vibrating member are substantially parallel. 7

i. In an organized phonograph a reproducer member in part consisting of a vibrating conical shaped member, a reproducer carrying arm pivoted to swing over a record to be played and carrying said conically shaped vibrating member, means provided whereby said vibrating member may oscillate around a carrying center on said carrying arm consisting of a journal thereon, and means for mounting said conical vibrating member with reference to said carrying arm so that said carrying arm and an adjacent surface of said vibrating member are substantially parallel, a stylus operating said conical vibrating member rigidly attached thereto and the axis of said stylus and the said conical vibrating member being substantially parallel.

5. A reproducer for a phonograph comprising a conical-shaped vibrating member rigidly secured to a stylus carrying member and entirely carried thereby, a stylus carrying member, and means for supporting said stylus carrying member to permit a stylus rigidly secured thereto to follow a record to be played and transmit the vibrations of said stylus to said vibrating member, said means consisting of a reproducer supporting arm, and means for supporting said stylus carrying member on said supporting arm consist ing of a flexible mounting in combination with a handle attached to said stylus carrying member.

6. A reproducer for a phonograph com.- prising a conical shaped vibrating member rigidly secured to a stylus carrying member and entirely carried thereby a stylus carrying member and means of supporting said stylus carrying member to enable a stylus rigidly secured thereto to follow a record to be played and transmit the vibrations of said stylus to said vibrating member, said means for carrying said stylus carrying member consisting in part of reproducer head 48, a reproducer supporting arm 41, and a detachable securing means for securing the said reproducer head to said supporting arm.

7. A hornless phonograph comprising a 'reproducing unit provided with a stylus holder having a freely vibratory sound disseminating element entirely supported by and rigidly attached to said stylus holder, a reproducer head having rigidly attached thereto said reproducer unit, and means for resiliently supporting in said reproducer head said stylus holder, said stylus holder and sound disseminating element being of relatively smallmass while the reproducer head is of relativel large mass.

8. A hornless phonograph comprising a reproducing unit provided with a stylus head.

CHARLES P. MADSEN.

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