The radio dealer (Apr-Sept 1922)

July, 1922 THE RADIO DEALER 75 ments which produces a new and useful result is patentable." If in the construction of an improved machine it is necessary to incorporate therein a part or parts which in themselves are covered by an unexpired patent to another, the improved machine — if the improvement amounts to invention — would still be patentable, although not capable of commercialization in view of the fact that it could not be made, sold or used without infringement of the earlier patent if the latter were valid and the invention properly claimed therein. But the disclosures of any expired patent may be utilized, in whole or in part, in the construction of a machine which constitutes a real improvement, and the latter as a whole may be made the subject of a " merchantable " as well as a strong and valid patent. ENTER RADIO FIELD The Automotive Specialties Company, of New York, whose products have been known in the automobile accessory field for a number of years under the "Tasco" trade-mark, have recently undertaken the manufacture of a popularly priced crystal receiving set and high quality headset. All "Tasco" products carry the unreserved guarantee of the Automotive Specialties Company. The receiving set lists at $5.00, while a pair of "Tasco" phones retail at $7.00. The quality of former "Tasco" products in the auto accessory field is doing much to entrench their products firmly in the radio market. WARRANT LOOSE COUPLER The Mercury Radio Company, of Orange, New Jersey, guarantee their loose coupler designed especially for radio service by their engineers, after painstaking experimenting. The particular feature of their loose coupler is that its tuning coil core is made of bakelite, peculiarly adapted to radio needs. The Company also makes radio sets and the units of the sets, which may be built up as the enthusiast finds his wants and his pocketbook increase. All Buffalo newspapers have arranged to supply the evening programs of the new radio broadcasting station, WRG, of the Federal Telegraph and Telephone Company, which was opened May 21. The Courier has the Monday night program ; News, Tuesday night ; Times, Wednesday night; Express, Thursday night; Commercial, Friday night, and Enquirer, Saturday night. The Edmonton Journal, Edmonton, Alberta, is the latest Canadian daily to announce the installation of a radio broadcasting station. DEALERS ATTENTION We are ready to market an attractive line of Radio Sets and Accessories. Communicate with us regarding exclusive selling rights for your territory. Roydart Company Inc. 2 Rector Street New York City 66 SEABOARD" Products Sturdy Construction Perfect Insulation Special Shaft Contact Adjusted, Tested a 11 d Inspected Before Shipment 23 Plates Capacity— .0005 mfd. Dependable Efficient Guaranteed Low Price PRICE $3.00 No. 1. Variable Condenser For Panel Mounting IMMEDIATE DELIVERY Jobbers and Dealers SEABOARD RADIO CORPORATION 266 Grand Street, New York City Wriie for Discounts TONKS VARIABLE CONDENSERS Every condenser tested before leaving factory and guaranteed to function properly Air Type 13 plate— .00025— $3.00 23 plate— .0005— 3.50 43 plate— .001— 4.25 Distributers Write Insulated Type Ideal for Amateurs 13 plate— .0005— $3.40 25 plate .001— 4.00 Only One Wanted in Each Territory TONKS MFG. CO. 16-22 BOYDEN PLACE NEWARK, N.J.