The evening world. Newspaper, May 9, 1922, Page 18

EVENING WORLDS wees) a By Capt. Robt. Scofield Wood. 4D. F.C. M. C., Croix de Guerre with four pats; formeriy Commander 167th Squadron, Royal Air Forces.) ‘@ETERNATING CURRENT FOR FILAMENT AND PLATE. Tm a preceding article we discussed the ase of direct current (D. C.) for Mament and plate operation. To-day ‘we will consider one of the ways of wsing alternating current (A. C.) for the same purposes, ‘The method to be described has the necessary theo- reties! and practical knowledge of the operation of the circuits, but it {s more ham likely to give the layman con- Miderable difficulty in securing such ad- Joatments as will give him satiafactory results. For ihe benefit of those who are just cutting their “radio eye teeth” ‘we aincerely suggest sticking to the sie-volt storage battery. Despite the ee CORE S"LONGX 4" WIDE ¥ 1” DEEP OBE MADE OF” LAMINATIONS 1" WIDE which 1s on top of the primary winding. ‘This secondary coll consists of 160 of No. 32 D. ©. C. wire. S'—Second half of the plate secondary also 160 turns-wound upon the second half of the primary and insulated from it. 8'—One-half of the filament lighting secondary, conalating of 12 turns of No. 18 double cotton covered wire wound upon the core with two or three layers of shellacked paper between the core and this windivem, 8 —The second halft of the filament lighting secondary wound upon the core and insulated from it in the same man- ner as the first half. Great care must be taken in winding the collx of the transformer in the same direction, so that if any two halves of one winding were removed from the core and placed end to end the winding would be continuous and not double back upon iteelf, [f it ap) age will be obtained from that lar winJing. It might be advisable in order to con- FEATURES OF THE HOOK-UP FOR USING 110 VOLT A. C. ON PLATE AND imootiveriences of the storage battery, it tas the advantage of being absolutely eats, and the possibilities of burning owt the vacuum tubes and starting « ry remote, The application fighting current has many aside from the fire hazard, whieh: would prove futal to the desires aNd ambitions of the embryo fan. A experimenter is often tried to the point of distraction in overcoming the hum of aliernating current and out numerous other things iy the Iine of unforeseen disthrbances. However, for those who are prepared to with 110-volt A. C., the following experiment the amateur will idea as to the correct nd- and will be surprised by the obtained. The careful FILAMENT. struct a transformer that will have es- pecially long life to insulate the wind- ings one from the other and from the core by means of empire cloth, which a @ special type of insulation used in power transformers, Strips of lead and aluminum will Probably be found to give better results than any other combination in the rectifier. ‘To obtain tho best results in the con- struction of the core after each lam-~ ination has been cut out and given one coat of shellac it should be allowed to dry and then be given @ second coat. In constructing the transformer it will be found that the simplest method ts to wind the «olls upon a cai tube having the same #hape as the core and then slip the coll on the core after it has been wound and bound to prevent it from coming apart. Before starting the winding of the coils lay several threads along the winding form panel to its and spaced equally, four thread: sufficient, Have euch thread about four times as long as the coil is to be, Shellac each thread to the coil form at the ends in order to keep them out of the wey while the winding is in progress, Now wind the coll on the fore it is slid on to the core, thus pre- venting it from coming apart. It 18 to be expected that a it many different results will be ined by experimenters from the use of this device as there are a variety of considerations that eter into its use structor. hese exact condition of the A. ©. line upon which it ie used, that fs, the power factor of the line. The experimenter will have no means of knowing what the latter and even if he did, there would be “eans of varying It, so the circuit ds some experimenta- tion to obtain the best results. The transformer core is 4 inches by 3 inches by 1 inch, made up of lamina- tions of silicon steel, covered with a single coat of shellac. The electrolytic rectifiers are 1 timeter jars filled with (Pronounce it Ee-Noz) wturdted solution of borax tm. which strips of lead and alluminum are sus- vended. Old Naval Tubes for Amateure. ‘The Navy will open sealed bids on 30,000 surplus vacuum — tranamitiing tubes which are to be sold in Wholesale lots of 10,000 at the Washington Navy Yard on Monday, May 15. These tubes were originally designed for transmit- ting and fit ordinary commercial transmitting socket. However, they may be used for detecting and amplity- by reslotting the receiving tube ket about 45 degrees from the usual slot, This Is esscntial because the re- taining pin in the base of chem fs abdut 45 degrees {rom the position of the re- taining pin of present day recelving tubes. These tubes will be sold in the retat! market In their original cartons marked for amateurs for experimental use only. ‘This limiting clause need not bother any of the folks who buy them for enter- tainment purposes, because experi- mental uses embrace this phase oi Shipping news at 2.05 P.M, eather reports at 11 A. Mu, 1 P. M., Quartet, Everett by Otis Skinner and Katherine Calvert, 7.45—Government market repo: ni George Donaldson, |a report of the New York Btock [x~ CEB YEARS OF HOME FURNISHING | TNT TNT ay . M. and 11.01 P.M, . M.—"Man in the Moon” stories, | drums M.—"Do You Use Latior Bav- | old Mildred Maddocks, K DK A (Pittsburgh) 340 Metres. and at 16 minute intervals] Litchfield, weball scores, scores, « News, Entertainmenw 10.65—Arlington time signals. conductor Program “La Reine de © et cortege (Gounod: 3.30 P. M. (Jean Briquet), “Lights Out March” (McCoy). Cornet solos by Harry Balter. 9 P. M.—Concert by the Dorian Quar- tot: Haze! Drury, first soprano; Hivera Cedargreen, second soprano; © Ruth Pearcy, Lum Root, second John = Weinman, : “Carmena,” Wil- Tileer; “April first alto: operaiion. The fact that these tubes are sev-| | eral old must be shown on the label. To ourb the exploiting of these tubes by unscrupulous sales organizations a fallure to comply with the Naval regulations in sales con- tract will result In the tubes by the authoritie particu | felt of all payments already made, NEW BROADCASTING LICENSES. Twenty-three new broa@eneting sta- tions have been licensed thie week by the Department of Commerce, bringing the grand total up to 235, QB AY—Amorican PS ° ‘elegraph Company, New WBAV—The Erner & Hopkins pany, Columbus, O. WGM—Georgin Railway and Power Company, Atianta, Ga. (Atlanta Con- stitution.) pany, Hamilton, 0. KNI—T, W. Smith, Bureka, Cal. WBAX—Jobn H. Stenger jr., Wilkes- Barre, Pa. VOX Detroit Free Press, ‘Detrott. hoh, WCAB—Kaufmann & Baer Company, Pittsburgh, Pa. WCAB—Newburgh News Print & Publishing Company, Newburgh, N. Y. WBAZ—Times-Despatch Publishing Company, Richmond, Va. KIX. Company, X—Tribune Publishing Cal. niversity of Nevada, Reno, KZV—Wenatchee Battery and Motor Company, Wenatchee, Wash. WBAP—The Star-Telegram, Worth- am-Cal Publishing Company, Fort Company, New Orleans, La. KNX—Bectric Lighting Supply Cotm- pany, Los Angosles, ‘WCAC—John Fink Jewelry Corhpany, Fort Smith, Ark. we. Lawrence _Univerity, Canton, N. ¥. (Only weather), ho: heat of California, Berke- ley, . 360 Metres Features for the day: Agricultural reports at 13 M. and 6 P.M. rad Arlington oMetal time at 12.55 P. M. tol P, M.; 10.66 BP. M. to 11, P. M. Yor rama ge pe th dl MSE Bg s Music every 1A. M. mM forte gatnaten afer the how KILLS MOTHS (Will Not Stain) Every home in this city is a cosy moth- hatchery. So is every trunk and chest in which you pack away winter clothes. You are all engaged in the business of breeding moths the millions and you don't know it. With the present high prices of furs; ethers, woolens, carpets, etc., all these articles are mighty we! rugs, worth saving: ENOZ is the only moth-insurance in the world. Yon oan bay ort insurance from the insurance companies, but a few dollars invested in ENOZ é# abso- lute moth insurance. If you have already packed away your winter woolens and fabrica, get them out today. Spray them thoroughly with ENOZ, and they will be safe and sound by the time winter comes again. ENOZ is a processed compound that is used by many of America’s greatest wholesalers and retailers to ree their own valuable stocks. Use it on your valuable goods and prevent them Don't confase tags Taa"ee"geod. "Enz New York Branch Street, " with an te tg 2 te neti Remember: Enoz Kills Moths It lo more thee @ repellent Pint Of BI 08 -nmnemnnm—- $1.00 art of Enoz.... 4 gal. and gal. sires ev Improved Sprayer. Junior Sprayer... 60 Bold by drug, department and household equipment siores everywhere. If yours does not sell it send us his neme, and enclose price and we will eapply you. ENOZ CHEMICAL CO. Stuyvesant 8197. 708-7 N. Wells St, Chieage (Offenbach), Miss Drury and Miss Root; “Amour Viens Alder," from Samson et (s “Jewel (Gounod), | Miss Dru Thru the Night" ol Welsh air; Charile Is My Darting,” (Scotch), Miss Root. W G I (Medofrd Hillside, Mass.), 360 Metres, 7.80—Bedtime story, “The Happiness Key" (Pease, Youth's Companion), read Bunice L. Randall. "Cancer (by request), Personal Hygiene Talk No, 17, by B. A. Wolcome, Executive Secretary, Junior Depart: ment, American Red Cross, 1$—Elizabeth Stratton, “mezzo-0- Franklyn G. McManus, basso nes, saxaphone; Har-| change. ordon, plano, 8—Baseball scores, "Our Government and Its Neighbors,” by Dr. $.80—"'Bunniken Moon Ki for the children. 9—Musi Paint 10—Baseball scores. Manley of the University of Pittsburgh. Part 1," a bedtime story Programme by Ethel Herr Anna Laura Cree, soprano; Leo Kruzcek, violinist. Mary had a little lamb With fleece down to its toes, But they bobbed its hair to make a puff ef H ALL LAMB’S ower Ftuff GI Cowoer L 6-Day Drive for 6000 new Customers Four More Days of the Most Startling Bargains in Years—Everything for Your Home at New Low-Level Prices—Open an Account To-Morrow and Save Up to 40% We Will Hold Your Purchases FREE OF CHARGE Until You Are Ready for Them We Will Open 6000 Accounts With These Terms! ° $5 Deposit Delivers Your Purchase of *100 Smaller Deposits on Smalicr Purchases, ——— s] 0 Deposit Delivers Your Purchase of $ 20 Deposit Delivers Your Purchase of $3 Deposit Delivers Your Purchase of *200 *600 Deposit Delivers 540 Your Purchase of $ _—— 5 “New Ideal” Made by The New Home Co. REGULAR PRIC: $47 Dresser..... Chifforobe. . . $38.34 .. 29.27 Deposit Delivers $ l 000 Your Purchase of Your deposit secures the im- mediate delivery of your entire purchase. You need not make any other outlay of cash. You have a Year and a Half to pay the balance. 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Vee a'so have all other sizes at proportionate reductions 9x12 Siw Velvet Rugs $] 7 95 We also include a special lot of worst Brussels rugs in fine patterns, all colors... 9x12s'ScimeaHeavy Axminster $27-95 Not the kind you usunlly see advertised, but a real closely woven rug—all wool, 9x12 stants Hygrade-Wilton $35.00 Not @ cheap velvet rug, but a real Wilton velvet made for wear—Chinese and Persians. . Impcried Fibre Crrpet 49¢ va. stall Spo" a Linoleum Plain colors only 95c WALK 0 ER RUG CO.INc. & 132 West 34ih St. Bet.6th & Fth, Aves | If you truly want to reduce your mills bill, here’s the way. Ask the grocer for the new milk— ROGERS RICHEST MILK Fresh Packed. In Glass For cooking and table use Rogers Richest goes three times as far as high priced bottled milk. Every ed is sani -sealed and extra rich in butter fat. Fine for Babies Newark, N. J. 49-51 MARKET ST. We suggest you order ROGERS RICHEST by the case (24 ri your local dealer will not fill your order, write us. We wil, see you get this extra rich misk in glass. Rogers Milk Corp., 25 West 43d St., N. Y. City glass jars).