Indianapolis Times, Volume 35, Number 1, Indianapolis, Marion County, 12 May 1922 — Page 10

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Prevention of Fire in Radio Is Discussed The following fire prevention regulations for the benefit of radio fans were announced today by the State fire marshal : a. Antennae outside of buildings shall not cross over or under electric light or power wires of any circuit of more than .six hundred <('Oi volts or railway trolley nr feeder wires nor shall it be so located that a failure of either antenna or of the above mentioned electric light or power wires can result in a contact between ’.he antenna and such electric light or power wires. Antennas shall be constructed and in'ralled in a strong and durable manner and shall be so located as to prevent accidental contact with light and power wires by sagging or swinging. Splices and Joints in the antenna span, unless made with approved clamps or 'pllcing devices, shall be soldered. Antennas Installed inside of buildings ire nor covered by the above specifications. b. X.cad-in wires shall be of copper, approved copper clad steel or other approved ni“?a! which will not corrode xcessively and in no case shall they be 'mailer than No. 14 B & S. gage except hat approved copper-clad steel not less han No. 17 B. & S. gage may be used. Lead in wires on the outside of buildings shall net come neater than four i4> Inches to electric light and power wires unless separated there"rona by a continuous and firmly fixed non-con-ductor that will maintain permanent separation. The non conductor shall be in addition to any insulation on the wire. Lead-in wire* shall enter building hrough a non-combustibl", non ob'orp:ve insulating bushing. t’ROT FCTIVE utvitrs. e. Each lead in wire shall be provided with an approved protective device properly connected and located (inside or outside the building) as near as practicable to the point where the wire enters the building. The protector shall not be placed in the immediate vicinity of easily lgnitlble stuff, or where exposed to Inflammable gases or dust or flyings of combustible majerials. The protective device shall be an approved lightning arrester which will operate ct a potential of fire hundred (500) ' .dts or less. The use nf art antenna grounding witch is desirable, but does not obviate he necessity f, r the approved protective device req .ired in this section. The antenna grounding switch if installed 'hall, in Its ciosod position, form a shunt around the protective device. and. The gr.und wire may he bare or disunited and shall bp of copper or approved copper-clad steel If of cop-•-T the ground wire shall be not smaller than No. 14 B A- S. gage and if of approved copper-dad steel it hall he not smaller than No. 17 B. A S.

f \ ( \ RADIO You Radio Fans ! Would You Like to Have a Vacuum Tube Set which requires no auxiliary storage battery? We now have in stock the Westinghouse Aeriola Senior complete w ith vacuum tube and Brandes head phones. It’s Price, $65.00 Radio Parts All necessary parts for making or enlarging your own radio set may he obtained here. Their quality is uniformly reliable. Sixth Floor ) ■£ ' Radio Fans Avoid Disappointment By depending- on the reliable radio equipment and sound advice of the Oldest exclusive radio dealers in Indianapolis. Prices as low as quality allows. HOOSIER ! RADIO CO. I Two Convenient Stores: No. 1, 9 Pembroke Arcade No. 2, In Merchants Heat and Light Co.’s Store RADIO MAXIM: “Cheap equipment is dear at any price.” ~ ■ House Wiring Lighting Fixtures B.E.W. ELECTRIC CO. Ll-ncoln 5242. 36 Virginia Ave.

DAILY RADIO FEATURES

Hook-Up of Single Stage Amplifier

BF B. L. DCNCAN, Director Radio Institute of America. A number of amateurs sre using receiving sets with a single vacuum tube detector. With little expense they could add an amplifier to this receiver and greatly increase their reception. The diagram shows an amplifying unit which can be constructed for such a set. No. 1 represents two wires leading from the telepho e binding posts of the det'etor set to tl > input binding posts of the amplifier. No. 2 is a tel- ..hone Jack, similar to the one need or a line telephone switchboard. It n a be purchased at a reasonable price n any supply store. The Plug for the . ack is attactu?d to the telephone cord*. When one wants to listen in on the detector only, he plugs In and cuts out the amplifying circuit automatically. No. 3 is an audio frequency transformer. “A” represents its primary and “B'’ its secondary. No. 4—An amplifying vacuum or “hard’’ tube. No. 5 Filament rheostat. No. 6—A 43-volt “B" battery. No. 7—Six-volt storage battery. No. B—Another telephone Jack. The six-volt “A” battery used for the

gage. The ground wire shall be run In as straight a line as possible to a good permanent ground. Preference shall be given :o water piping, Gax piping shall not be used for grounding protective devices. Other permissible grounds are grounded steel frames of buildings or other grounded metallic work in the building and artificial grounds such as driven pipes, plates, cones, etc.

Special Purchase Prices TERMS —$5 Per Month On Any Rug 36x72 Grass Rugs 9x12 Grass Rugs „ 9x12 Seamless Velvets A 4 17c Assorted colorings and designs. UKrt pi 1 ,|D Very unusual values—--36x72 |j j 6x9 Narragansett Rush I; *27 D, Luxe Gras, Bugs Rugs 9*12 Fringed Seamless C "1 Idea! for porch or sun parlor— Velvets JL - ;| i $ 1 Exceptional quality. Wonderful *r I designs and colors — 6x9 Grass Rugs A ** j SOA 95 9x12 Tapestries * 9x12 High 6x9 Crex Rugs $1 Q | Pile Wool Axminsters $7.95 ii * $44 v # = 9x12 Seamless Tapestries 11 Choice of a wide range of pat- 9x12 Fringed 9x12 Crex Rugs ! i| colors ~ Seamless Wilton Velvets I . | $ 22 J L $ 55 I Unusual Stock of Linoleums and Floor Coverings Included In This Sale f~ ' " 1 L —- ■■ —— =3) 6-Foot Wide Felt Base #?¥s& Inlaid Linoleum Floor Covering jjyVWVF Square yard, $3.8;") and down 55c |fgj| Bjjfc ' S L 6S 12-Foot Wide Burlap Back ; VLJL. j’i"; AAAMtM 9-Foot Wide Gold Seal Printed Linoleum Congoleum 98c iilMll 64c I Linoleum and Floor Covering Laid by Experts V/ithout Charge k - - J) Si- .

| jL k e- ■ SINGLE STAGE AMPLIFYING UNIT.

detector tube may be used also for the amplifier. FEW wir,s. This set may be mounted in a cabinet Tout six or seven Inches long, and the same height as the detector receiver. Remember to have as few wires as possible. The vacuum tube socket is the same in the amplifier as in the detector. Including an extra “B” buttery necessary and the Jacks, plugs, transformer, vacuum tubes and aockets, the cost of the additional parts for the set should not exceed $22. Another step in amplification may be added in Just the same manner, making the connection along the dotted line from the Jack (No. 8).

The ground wire shall be protected against mechanical injury. An approved ground clamp shall be used wherever the ground wire Is connected to pipes or piping. (e) Wires Inside buildings shall be securely fastened in a workmanlike manner an 1 shall not come nearer than two (2) inches to any electric light or power wire, unless separated therefrom

s&nnrr^unutiut(jjci

INDIANA DAILY TIMES.

HELP COLUMN. A. C. Jeffrey, Rushvllle: 1. Will you please tell me how to make an aluminum and lead rectifier to charge my storage battery? 2. Do I have to control the imput current to the battery with a lamp bank? A. 1. More detail as to the kind of battery you have is necessary. 2. No. V. T. Allison, Martinsville: Q. I have a tickler coll, one variable condenser, one fixed condenser, one vacuum tube detector, 4,000 ohm phones, A and B batteries and plenty of panel switches. Would you please publish a hook-up for the above? A. Tou will find a hook-up for your outfit In the TIMES of Tuesday, May 2.

by some continuous and firmly fixed nonconductor. making a permanent separation. This nonconductor shall he in addi tion to any regular Insulation on the wire rorcelntn tubing or approved flexible tubing may be used for encasing wires to comply with this rule. (f) The ground conductor may be bore or insulated, and shall be of copper, approved copper-clad steel or other ap-

proved metal which will not corrode excessively under existing conditions, and in no case shall the ground wire be less than No. 14 B. and S. gauge, except that approved copper-clad steel not less than No. 17 B. and S. gauge may be used. The ground wire may be run Inside or outside of building. \\’hen receiving equipment ground wire is run in full compliance with rules for protective ground wire, in Section (and), it may be used as the ground conductor for the protective device. TONIGHT’S PROGRAM INDIANAPOLIS STATION WLK—--9:30 p. m.. time and weather reports (4-S5 meters). INDIANAPOLIS STATION WOII 8:00 p. m., musical program, Faulk ner’s Radio Six. CHICAGO STATION KYW (central daylight savings time) — 8:00 to 9:00 p. m.. Robert D. Taylor and Larry Sehaetzlein, accompanists. 0:00 n. m., news and sports. SCHENECTADY (N. Y.) STATION WGY (eastern time)— 7:00 p. m., market quotations supplied hv New York State Department or farms and markets and weather reports. 7:45 p. m.. musical program. PITTSBURGH STATION KDKA (east era time) 7:30 p. in., “Credits,” H. Archibald Harris, president Indiana Certified Public Accountants. Indianapolis. Inrt.; “The Fall Vegetable Garden." W. D. Benedict. 8:00 p. m., classical selections by Bee man’s Orchestra. 9:00 p. m., nows and sports (United Press). 9:53 p. in., Arlington time signals. NEWARK (X. J.) STATON WJZ i.east- . ern time)— 7:00 p. m., "Man-in-the-Moon" stories. 7:30 p. m., “Brief History and Facts About the Hospital Work for Poor Children in New York City,” by Leeds Johnson. 7:45 p. m . “Woman, the Greatest Buyer,” by the Applecroft expert mental station. 7:55 p. tn.. “The Trend nf Business Conditions,’’ by Richard D. WyckolT. 8:00 to 9:30 p m.. concert by the t >-il bam University Orchestra, J. J. ’ Lynch, director. 10:52 p. ni., Arlington time signals. DETROIT (MICH.) STATION' WWJ (eastern time) — 7:00 p. m., musical program. ATLANTA (GA.) STATION WSB (eastern time)— 8:00 p. m.. musical program.

RADIO PRIMER LOOSE COUPLER—A form of coupler, the secondary of which is brought into resonance with the primary by sliding back and forth within the primary coll. The windings of the primary and secondary coils should be in the same direction. The closer the coupling the better are the signals received. Currant Worms Attacking Vines Worms are attacking current vines and it Is time for spraying with a solution composed of one ounce of arsenate of lead mixed in one gallon of water if the fruit is to be saved, Frank N. Wallace entomologist for the State Conservative Department, says. Unless the vines are sprayed soon the worms will defoliate the vines and the fruit will wilt and drop off. Spraying at this time will prevent the Impending loss, Wallace says.

Rex Junior Crystal Set For Sale at All Hook Stores By Our Own Tests Rex Junior Has Proved as Successful for This Purpose as Very High Priced Outfits The operation of Rex Junior will be a surprise to experienced radio fans and those who have been led to believe you could only hear successfully with Ilia’ll priced outrits. Concerts and news items by the Indianapolis broadcasting stations may he clearly heard by Rex Junior. REX JUNIOR SHOWS SUPERIOR WORKMANSHIP and is finished in black leatherette covered box. All metal parts are nickeled. No battery is necessary with Rex Junior. Aerial and head phones are required. Watch for the Opening of Our Complete Radio Department £/ * 11 Dependable efCbCftd Drugstores CITY STORES ))t Washington Street store. W. MiMunrhuftetts Ave. Store, Mann. Av. Meridian and Wash, Street Store, \\ nuliing-ton un.l Semite. S. \V. Cor. at Vermont and Alabama Streets. S. E. Cor., In Marrhants Bank Bldg. Illinois and \l nsh. Street Store., Illinois Street Store. 105 N. Illinois East Washington Street Store, E. S. E. Cor., tn Occidental Bldg. St. Opposite Terminal Station. Wash, and New Jersey, N. W. Cor.

Capital Surpl us Undivided I Experience Over - FOUR MILLION Is the greatest teacher in the world. Time alone gives the necessary experience required to make any business organization proficient. The Indiana National Bank has sixty-five years of banking experience and our record shows that we have profited by it. Your sav in g s or commercial accounts are welcome. Don t Experiment Come in and talk r with ns about your Deposit your savings in this strong old commercial or fiiian- banking institution, and be absolutely sure Will advise you that it is safe. You benefit by our expenfrankly. once. TRAVELERS’ CHECKS—The safest way to carry funds on vacation or business trips. We sell them rflWi if jj ljf-! ; aS|Mu^ in denominations of $lO, S2O, SSO and SIOO. Letters lllillii of credit and foreign drafts and remittances made The Indiana National Bank FOUNDED 1857

If It*s RADIO Ton’ll find It at oar two stores Capital Radio Supply Cos. 146 N. Pennsylvania St. RADIO CENTER On the Circle at North Meridian Street. Concerts each afternoon and evening at Radio Center. prompt service to dealers.

HATFIELD SERVICE “A*We Broadcast So Should We Receive” USE HATFIELD RECEIVING SETS

MAY 12,1922.