US1808189A - Phonograph - Google Patents

Description

June 2,1931. E. VADASZ 1,808,139

PHONOGRAPH Filed March 29. 1929 2 Sheets-Sheet l /n vemor: ETIENNE VA msz,

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ATTdR/VE of June 2, 1931. v sz 1,808,189

PHONOGRAPH Filed March 29, 1929 2 Sheets-Sheet 2' In ventor: .ET/E/v/YE VApAsz,

Patented June 2, 1931 1 e warren STATES Parser @FFI'CE ETIENNE VADASZ, OF STE-CBOIX, SWITZERLAND PHONOGRAPI-I Application filed March 29, 1929, Serial No. 350,904, and in Germany August 3, 1928.

My invention relates to improvements in Fig. 4, is a perspective view showing a cyphonographs, and more particularly in pholindrical casing and the parts shown in Figs. nographs in which the casing is in a form 1 and 2 associated therewith, which permits the same to be carried, the said Fig. 5, is a sectional elevation showing the 5 casing being ordinarily in the form of a hand casing and its lid and the parts shown in Figs.

bag or case. One of the objects of the im- 1 and 2 associated therewith, and provements is to provide a phonograph of Fig. 6, is a top plan view of Fig. 5 with the this type in which the sound arm carrying the lid removed. 1 sound box is adapted to the form of the casing As appears from Figs. 1 and 2, the sound 10 of the phonograph so that it requires little arm l, at, carrying the sound box 1 is circular space. With this object in view my invention in form, and with the part beginning at the consists in constructing the sound arm in joint of the sound box 1 to the point 2 connectcurved form disposed around a comparatively ed with the sound chamber disposed around a large part of the circumference of the turngreater part of the turntable 3 which carries 15 table carrying the record disk, the said arm the record disks, the said part of the circumextending at least over one quarter of the said ference of the turntable being about one half circumference, and the dimension of the said of the circumference, and the sound arm is sound arm being such that one half of the gradually enlarged in cross-sectional diamlength of the said sound arm taken. from the eter from the joint of the sound box to the 20 joint of the sound box to the point where the point 2. The distance between the sound box sound arm is connected with the case is 1 and the point 2 is smaller than 'one half of greater than the distance between the sound the total curved length of the sound arm 4, 4:, box or its stylus and said point where the and it is equal to the distance between the sound arm is connected with the case. Therepoint 2 and the centre 5 of the turntable 3.

25 by the sounds produced by the sound box are The sound arm is made in two sections l, l

effectively transmitted in horizontal and Verconnected with each other by a universal joint tical directions though the space required for the axis of which coincides with the axis of the the sound arm is small, the result being that sound arm, so that the section 4 can be rocked the entire enlargement from the joint of the either into the plane of the urntable 3 or be- 30 sound box to the point where the sound arm is low the said plane and into inoperative posiconnected with the case can be provided withtion, and above the said plane into reproducin the sound arm itself, and a flaring horn ing position. Thus the sound arm requires within the case may be dispensed with. little room, and the sound waves have a long Further objects of the improvements will way through the sound arm from the box 1 35 appear from the following description. to the point 2, so that the gradually flaring For the purpose of explaining the invenform of the path of the sound waves which is tion an example embodying the same has been necessary for properly amplifying the sound shown in the accompanying drawings in is obtained within the arm 1 itself, and a spewhich the same reference characters have cial sound amplifier at the mouth 2 may be dis- 40 been used in all the views to indicate correpensed with. sponding parts. In said drawings, Fig. 2 shows the section 4 of the sound arm Fig. 1,is a diagrammatical plan view showwhich has been swung relatively to the secing the turntable for carrying the record tion 4 into reproducing position in which the disks, the sound box, and the sound arm, sound box 1 bears with its stylus on the turn- Fig. 2, is a diagrammatical elevation of the table 3. v parts shown in Fig. l, the sound box being in By reason of the novel form of the sound reproducing position, arm the casing of the phonograph may be Fig. 3, is a similar elevation the sound box in the form of acylinder having a circular 5 being in the position removed from the recbottom 7, a top 8, and a cylindrical wall 9, 0rd disk, the diameter of the said casing being comparatively small and adapting itself to the novel form of the sound arm. By reason of its cylindrical form the casing can be readily manufactured from sheet metal by a drawing or punching process.

The inner chamber of the casing consisting of the bottom 7, the top 8 and the side wall 9 provides the sounding chamber within which the motor 10 is mounted. The sound is delivered from the said chamber through openings 11 disposed concentrically below the turntable 8, the result being that the said turntable which is disposed the proper distance away from the top 8 of the casing intensifies the sound and directs the same to all sides in horizontal direction.

The lid 12 may be hinged to the caslng at 13, any customary means being provided for v releasably fixing the lid in the desired position. The record disks to be placed on the turntable 3 may be stored within the said lid. By disposing the section 4 of the sound arm below the plane of the turntable 3 the said arm requires little room, and the height of the apparatus is comparatively small.

By constructing the sound arm in the manner described above the form of the casing may correspond to the form of the sound arm, and it may be circular in form, so that the height and the diameter of the sound casing are small. Further the cylindrical form of the casing and its lid enclosing the turntable carrying the record disks andthe sound arm has a characteristic and artistic appearance.

Further, the phonograph may be constructed with a casing which is perfectly closed, and which therefore is not only provided with a bottom plate, but also with a top plate, the said top turntablebeing provided below the plate carrying the record disks with openings through which the sound is delivered. Thus the said turntable has the functionof a sound reflector by means of which the sound is uniformly directed to all sides.

I claim:

1. A phonograph comprising a casing including a sound chamber, a rotatable turntable mounted in said casing for receiving the record disks, a sound arm connected at one end with said sound chamber, said sound arm being of gradually increasing cross-sec-' tional. diameter toward its connection with said sound chamber and being of circular form disposed concentrically to a portion of the periphery of said turntable, and a sound box carried by said sound arm at its outer end, one half of the developed length of said sound arm being greater than the distance between its point of connection with the sound box and its connection with the sound chamber. A

2. A phonograph comprising a casing in-' cluding a sound chamber, a rotatable turntable mounted in said casing for receiving the record disks, a curved sound arm lying below said turntable in concentric relation to a portion of the periphery thereof, said sound arm comprising a first section pivotally connected with said sound chamber, and a second section pivotally connected with said first section about an axis substantially parallel with the plane of the sound arm, said section being adjustable out of said plane and being curved to project above said turntable in the adjusted playing position of the sound arm, and a sound box carried by said second section at its free end. 7

3. A phonograph comprising a cylindrical carrying case consisting of a closed body forming asound chamber, and a cover movably connected with said body, a turntable mounted in said case for receiving the record disks, a tapering sound arm connected at one end with said chamber and normally lying below said turntable in concentric relation to a portion of the periphery thereof, said sound arm including a movable section arranged to project above said turntable in the adjusted playing position of the sound arm, and a sound box carried by said movable section of the sound arm atits outer end, said sound chamber being provided with sound exit openings locatedbelow and in registry with said turntable. I

In testimony whereof I hereunto afllx my signature.

ETIENNE VADASZ.

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