Radio and Television Today (Jan-Dec 1940)

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ALL-PURPOSE <Jk IRC TAP-IN SHAFTS Stay Put Don't Pull Loose! Don't Vibrate Loose! Just pick the control you need and select the proper shaft for the job. Determine the proper shaft position, tap the coneshaped end of the shaft into the control receptacle following simple instructions furnished with every control, and the job is done. It won't' come loose, it won't slip. Think of the convenience, the saving in both time and money of this method! With IRC Type D universal size Controls, you're sure the shaft is right— and you're sure the quality of the control is the highest money can buy ! Used Anywhere to Replace Larger Old-Style Controls Don't confuse IRC Type D Controls with ordinary midgets ! For IRC's are more than midgets. They are exact reproductions of the larger IRC Type C Controls, with exactly the same features, exactly the same design in smaller size and with the added convenience of tap -in shafts. They are large enough to be fully dependable; small enough to fit in any set ; sturdy enough to stand up under the vibration encountered in auto radio use. You can use them anywhere, regardless of the size of the control being replaced. A small stock of IRC Type D (universal-size controls) plus a supply of the Tap -in Shafts will enable you to make quick, dependable replacements on almost any job. IMPORTANT TO USERS! The recent adoption of a new, improved switch for "D" controls necessitated a change in the drive arm in the control. This means that the new switches can be used only with the new controls, and the older style switch can be used only with the older controls. The new control has the rotational stop pin in the base instead of in the cover. Our distributors have identified their older style switches and "D" controls with a star on the boxes. The new style is not marked. In attaching switches to"D" controls, be sure to know whether the control requires a new or older style switch. The proper combination whether old or new will be perfectly good and dependable. Your jobber can supply either combination and will be glad to properly balance your stock. The Only Small Controls with These Exclusive Features COIL SPRING WASHER METALLIZED ELEMENT IRC Type D's are amazingly smooth and quiet when you get them— and designed to stay that way after long, hard use. From the famous Metallized type resistance element, to the 5-Finger "Knee Action" Element Contactor, the Silent Spiral Connector which does away with one sliding, metal-to-metal contact and the Coil Spring Washer that eliminates end -play in the shaft, they are constructed for the utmost in long, quiet and trouble-free service. "THE UNIVERSAL CONTROLS // .TERNATIONAL RESISTANCE CO., 401 N. Broad St., Philadelphia, Pa. In Canada, 187 Duchess St., Toronto, Ont.