US1370093A - Receiving-panel - Google Patents

Description

G. B. @HOUSE AND l. H. MILLS.

RECEIVING PANEL. A-PFLICATION FILED MAR.10,19|9.

i GEORGE B. CBO'USE ISAAC H. MILLS, OF BROOKLYN, NEW YORK, ASSIGNORS T0 THE SPEBRY GYROSCOPE Comm, 0F BROGKLYN, NEW YORK, CORPOBATIQN RECEIVING-PANEL.

Specication of Letters Patent.

Fatented Mar.t, limi..

Application led March l0, 1919. Serial No. 281,783.

To all 'whom t may concerns it known that we, GEORGE B. CRoUsE and lsAAc H. MILLS, citizens of the United States of America, residing at 493 Washington Ave. and 51 Clark St., Brooklyn,

N. Y., res ectivel in the count of Kings- P YgY Y and State of New ork, have invented certain new and useful improvements in iteceiving-Panels, of which the following is a specication.

This invention relates to instrument panels. More specifically it relates to receiver panels employed in radio telegraphy, or telephony.

it is well known in the radio art that electrical radiation, comprising electrostatic and electro-magnetic components originating in various electrical machines and apparatus, which may be in the vicinity of the receiver, permeates the surroundings medium and sets up certain erratic disturbing effects which interfere with the proper and intended operation of the receiver.

One of the purposes of this invention is effectively to shield the instruments by combining a metallic screen with the panel or hoard upon which the instruments are mounted. The stray electrical radiation is thus prevented from passing through the panel and absorbed or reflected before reaching the instruments.

Another object is so to combine the metallic screen with the panel as to form a mechanically sti and rigid structure.

-`With the above and other objects in view, the invention has relation to a certain construction and combination of parts, an eX- ample or' which is described in the following` specification, pointed out in the appended claims, and illustrated in the accompanying drawings, wherein; g

Figure l shows a conventional type instrument panel with its cover, the view being in vertical section.

Fig. 2 is an elevation View of a panel with a screen applied thereto, such as a copper plate secured to the surface of the panel.

Figs. 3, 1i, 5, and 6, illustrate di'erent methods of combining the metal screen or sheet with the panel.

Referrin now more in particular to the drawings, t e numeral l designates one form of instrument panel used in radio receiving. It is further pointed out that a device or panel constructed as here described mightnd a use in X-ray work as a protector to the operator, by incorporating a lead plate therein and Vvusing' it as a shield. A front and back metal cover 2 and 3 are employed to protect the instruments in use from physical damage or wear and tear.,v When the radio set is in use the front cover will necessarily have to be removed so that access may be had for adjustment and operation .of the instrument set. At this time the instruments are subjectedto the disturbing effect of electrical radiation which may pass through the panel unless a metal shield is provided. rlhe shield 4.- in connection with the metal cover 3 forms a metallic inclosure completely incasing the instruments against electrical radiation.

rlhis screen 4 is applied to either the front or rear surface of the panel. ln Fig. 1 the screen is applied to the rear of the panel and adjacent the instruments. The instruments are shown mounted upon the back of the panel, and are iitted with the usual form of adjusting screws and knobs which pass through the panel and are available for adjustment from the front side of the panel, as at 5 and 6. The instruments here shown represent a conventional set of radio instruments, or telephony set, and as the instruments do not materially bear on the subject of invention they are not described in detail but are pointed out in general by reference characters A., B and C, and being different instruments of the radio receiver set. The metallic sheet or plate 4 has punched therein all necessary holes and openings for receiving the parts and fittings which pass through the panel from the instruments to the adjusting means of the front. The sheet 4 is secured to the panels by embedding the struck up portions 7 in the molded material During the manufacture of the panel the plastic material is shaped in molds and forms and during this process the struck up portions are pressed into the plastic material before itzhardens thus securing the plate 4 firmly to the molded panel.

Fig. 3 and the remaining views illustrate various ways of combining the metal screen with the panel. The panel itself is usually moldedy of a selected insulating material such as bakelite dilecto, micarta and the like. The metal sheet, perforated plate, or gauze materialmay bev combined with the panel or plastic state into said mold or form.

When the material is hardenedv and removed from the form the metal sheet Will be e111- bedded in the panel and become an integral and strengthening embodiment with the panel construction.'

Another method of combiningthe two materials is to form the projections or struck up portions on the screen or plate by punching u go4 tions ofthe metal, as indicated by 7 an These' projections may be turned out on both 'sides of the plate and then molded into the mass of material and totally `incased therein as specifically shown in Fig.

3. In this Way the plate may be secured Within the panel. Angle members 9 may be secured tothe screen and incase'd in the molded material, andlikewise the edges of the shield or screen may be turned up and become fixed in the mold of the panel as indieatedat 9 and 9 in Figs. tand Perforated or gauze screens 10 and 11 may also be employed to advantage in a panel as shown 'in' Figs. 4 and 6.

A panel constructed as above disclosed forms an effect-ive shield and barrier to all stray electromagnetic and electrostatic fields, and thus may well be employed as a receiving anel in the art of radio telegraphy, telep ny or in other arts where the conditions are similar. Furthermore the screens or Shields form an effective strengthening or reinforcing means for the panel imparting great rigidity and mechanical strength thereto. A4As explained above the metalli-- shield may b e secured either Within or on either the front or back surface of the panel. If secured on the rontit provides a Surfaire upon which legends or indicia may be etched.'

Having described our invention what we desire to`claim and secure by Letters Patent is' l. instrument panel comprising in combination, a'planel of insulating material, and a metallic S. .est molded within said material, for mounting radio instruments and for shielding said instruments from stray radiation, electromagnetic, and electrostatic shielding radio and telephony instrumentsV from stra Y electrical rad1ation.

3. Any instrument panel comprising in combination, a molded material used as a base upon which radio or telephony inst-ru-V ments may be installed, a metallic gauze molded into the base, for the purposev of forming' a shield for protecting radio and telephony instruments from stray elet-tri(` radiation.

4. A molded receiver panel for mounting radio and other delicate instruments comprising in combination, a molded insulating material upon which the instruments may be installed, a gauze material, tongues formed on said gauze material and embedded within the insulating material, so as to secure the materials together for protection of the instruments from stray electrical radiation.

5.. A molded receiver panel for mountingr radio and telephony instruments comprising in combination, molded insulating material. a metallic screen,.tongues formed on said metallic screen and embedded within the insulating material, so as to secure the metallic screen and insulating material together for protecting the instruments from stray electrical radiation.

6. A radio receiving device comprising in combination, a panel ot insulating material. and a metallic shield embedded therein.

7. In an electrical instrument panel, a sheet of metallic screen and insulating material secured on both sides thereof.

In testimony whereof We have afiixed our signatures.

GEORGE B. CROUSE. ISAAC H. MILLS.

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