US2056002A - Radio apparatus - Google Patents

Description

- Sept. 29, 1936.

A. DE SAKHNCFFSKY 2,056,002

RADIO APPARATUS Filed Jan. 29, 1934 /7 E 2/ E z INVENTOR g 'ddw ATTORNEYS Patented Sept. 29, 1936 UNITED STATES PATENT OFFICE 1 Claim.

The invention relates to radio apparatus. One of the main objects of the invention is to provide a novel operating means for control of I such parts as the tuning, volume or tone. Ac-

5 cording to the present invention, the control operating means is made in the form of a ring or annulus which may be used in different associations with other parts of the apparatus and which lends itself more readily to a symmetrical 1O arrangement of parts and a more pleasing design of the cabinet or control panel.

A further object of the invention is to provide a radio apparatus in which the operating means for one of the controls forms a frame 15 about the speaker opening and thus provides a compact and pleasing arrangement.

The invention further consists in the several features hereinafter set forth and more particularly defined by the claim at the conclusion 20 hereof.

In the drawing:

Fig. 1 is a front elevation view of a control operating means embodying the invention;

Fig. 2 is a detail sectional view through a por- 25 tion of a radio cabinet with the control operating means shown in vertical section.

Referring to the drawing, the numeral 3 designates the annular control operating member generally and 4 the dial associated therewith, said 30 member 3 having a pointer 5 cooperating with the indications B on the dial. The indications here shown are for wave length, the control being a tuning control.

As herein shown, the dial 4 is formed or se- 35 cured to an annular supporting portion i having an inwardly extending annular flange 8 and a short outwardly extending annular flange 9 seating in an annular guide recess in the control member 3, these parts being mounted in the 40 opening H in the wall [2 of the cabinet for the speaker l3.

For supporting the speaker and the parts 3 and 4 in position, a spider I4 of metal or other suitable material is secured to the wall of the cabinet by screws I passing through arms l5 (one being shown) and to the speaker and the inwardly extending flange 8 of the dial support 1 by screws IS.

The member 3 is adapted to rotate on the dial support and is adapted to have its rotary movement translated to the tuning condenser bank I! 5 through any suitable operating connections. As here shown, the member 3 has an annular spur gear l8 secured thereto by screws I9, said gear acting also as a retainer member for holding the member 3 against endwise movement relative to the support 1. This gear l8 meshes with a gear 20 mounted on the control shaft 2| of the condenser bank I1, the ratio of the gears I8 and 20 being of any suitable value.

For the volume control, I have shown the control unit 22 disposed in the speaker opening with its shaft projecting through a support portion 23 and having the exteriorly disposed operating knob 24 thereon. The portion 23 is here shown as an extension of part of the material forming the dial 4, the control being suitably clamped thereto.

The opening for the speaker may be protected by the screen 25 here shown as secured to the back face of the dial 4.

From the foregoing description, it will be noted 25 that a rotation of the member 3 will through the gears I8 and 20 turn the tuning control shaft 2| so the desired station may be heard.

While the member 3 has been shown as connected to the tuning control, it will be understood that it may be used as the operating member for other controls of the apparatus such as the volume control or the tone control.

I desire it to be understood that this invention is not to be limited to any particular form or arrangement of parts except in so far as such limitations are included in the claim.

What I claim as my invention is:

In a radio apparatus, the combination with a cabinet having an opening for the speaker, of a control operating member surrounding said opening, an annular dial cooperating with said member and disposed within thesame, and operating means for the volume control within said opening and inside the projected area of said dial.

ALEXIS DE SAKHNOFFSKY.

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