US1703975A - Combination radio phonograph loud-speaker - Google Patents

Description

March 5, 1929. .APAMIEHL 1,703 '975 COMBINATION RADIO lHQN GRKPH LOUD SPEAKER Filed Aug. 25, 1925:

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INVENTOR.

Patented Mar. 1929. I i

V UNITED STATES :ALF'RED- WIEHL, 0F BROOKLYN, NEW YORK.

COMBINATION RADIO PHONOGRAPH Loun-sPEAxER. I

Application filed August 25, 1925. Serial No. 52,280.

This invention relates to the economic use ofa single apparatus for both radio sound delivery or alternately dispensing music from standard forms ofphonograph.

j It is well known that a speaker for radio use may be made in various forms and I have adapted a particular form to be supported 1n conjunction with a phonograph, so that at will the radio reception can be coupled up and the loud speaker dispense or throw out the radio speech 01' music, and when interrupted which is frequently the case, with no change whatsoever, the same device can be connected with a phonograph disc'and the same loud speaker element then throws outthe music or other sounds'from the phonograph. In particular, this provides an apparatus whereby any desired music by using diflerent discs,

is available in a household or at entertain- Fig. 4 is a fragmentary side elevation of the phonograph needle connection shown in Fig. 3.

The phonograph disc 1 is suitably supported and driven by a motor 2 in the usual manner. .A loud speaker in the form of a cone with resonant stiff Walls 3 and a frame 4 supported by arms 5, is carried by articulated arms 67 on a standard 8 above a spring 9,

1 which standard is supported on a swiveling base-plate 10 pivoted at 11 to the side of a boxcover 12.

The loud speaker has the radio Wire 0011- plings 13 on the radio responsive device case 14, with adjusting screw 15, and vibrate arm 16 connecting with cone apex 17 firmly secured to the resonant material of the loud speaker. A pin 18 passes through the apex of the loud speaker and has an arm 19 rigidly attached to it as by screw and nut, and the other end of the arm is attached to the support 20 for a phonograph needle or like means for engagement with the convolutions on the phonograph disc for transmitting the impressed sound waves. This arm is supported in bearings 21 on blocks 22 attached to the arm 4 of the loud speaker. The stylus 23 may be of any desired form, and supported on a position on the arm 4 so that it will have the proper inclination to the surface of the disc, while the weight of the loud speaker diaphragm and frame are partially balanced by the spring 19 with adjusting nuts 9 permitting the relief of the weight of the loud speaker to just the desired extent that will permit the stylus to move properly on the surface of thephonograph diaphragm. The

needle support on 8 permits the vertical plane of the loud speaker to be set in a position where it will swing in an arc carrying the stylus from the edge of the disc to the centre in the normal manner of operation.

Many variations may be made without departing from the spirit of my invention, but what I claim and desire to secure by Letters Patent is:

1. A unit article of the character described, consisting of a loud speaker having a rigid rim supporting a conical diaphragm, means to pivotally support said diaphragm by its rim with radio-impressing means to amplify radio sounds supported by the rim and having an engagement with the focal zone of the diaphragm, and means to support a phonograph disc in fixed relation to the loudspeaker with a stylus supported on the rim of the loud speaker with the supporting means permitting travel of the stylus in contact with and guring the operation of said phonograph 2. A loud speaker cone having a rigid rim supported for attachment in two alternate positions, radio means carried by said rim and supported in contact with the focus of the cone, a phonograph stylus attached to' the rim, and means to support said loud speaker rim alternately to swivel on an axis permitting the stylus to move across the surface in engagement with a phonograph disc or to remain in a fixed position for reproducing the radio sound without contact with the phonograph disc.

3. Combined radio and phonograph loud speaking apparatus, comprising a support carrying a pivoted rigid ring having :1. diaphragm for amplifying and projecting radioimpressing sounds, means cooperating with said support whereby a phonograph disc in the unit apparatus is carried with pernnssible predetermined movement, and a phonograph stylus supported from said rim at the diaphragm to impress phonograph sound vibrations upon the focus of the diaphragm and cause the loud speaker to swing synchronous- 1y with the requirements of a phonograph disc.

4. Aeombined radio and phonograip'h 'Io'ud speaker apparatus comprising a cabinet having a phonograph disc and driving means, a

't'io'n.

10 a radio impressing means for the diaphragm carried by the rim and actin on the diaphragm, Wherebywiththe shifting of the support the apparatus may be used alternate- 1y Without other-change for phonograph reproduction or radio loud speaker reproduc- In testimony whereof, I have signed my name to this specification this 24th day of August, 1925. V

- ALFRED WIEHL.

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