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m Renovations /or the Projection Room (Continued from page 32) NEW RCA PROJECTOR FACILITATES VIDEO in the gear train for excessive play and worn teeth. Dissemble the take-up mechanism and remove all old oil and grime from the clutch discs and replace. If clutch discs show signs of wear, replace them with new ones. Re-assemble and apply approximately as much tension as it previously had. Examine fire shutter to see that it operates freely and closes properly when the speed of the projector is retarded to a speed of 60 feet of film per minute. Lubricate properly. This completes the projector. It would be wise to run a reel of film through each projector for a test run. so finer adjustments such as take-up tension, focus, shutter timing, etc., can be made. Cleaning the Lamp After the head is checked and running properly, we can proceed to the lamphouse. If we are lucky enough to possess a vacuum cleaner, it will be a simple task to remove the carbon dust from the overhead of the arc housing:' if not. it can be cleaned with a putty knife and cloth. Using the 50-50 solution of alcohol and water once more, we can clean the parabolic reflector. Any small bits of carbon drippings may be removed with the aid of a razor blade, being particularly cautious not to scratch the surface of the parabolic reflector. The arc control mechanism should be well checked and thoroughly cleaned, taking care to remove all carbon dust and dirt from the gear drive. When the arc lamp and housing are spotless, it would be wise to check for maximum light output. This may be done by striking the arc. and slowly moving the burner mechanism back and forth in front of the reflector until the focal point is reached. You can tell when the objective has been reached by carefully observing the screen and taking note when the light reaches maximum brilliance. One word of caution before making the test. The arc must be drawing rated voltage, the reflector must be properly aligned, the positive and negative carbons must be perfectly adjusted, both vertically and horizontally, and the arc gap must be of correct length. If all of these adjustments are not correctly made, it will cause your calculations to be grossly inaccurate. Amplifier Is Next Next on the list is the main amplifier and pre-amp. Here one might think too much cannot be done, considering most projectionists are not sound engineers. But bearing in mind the projectionist should know some things about his amplifier, there are several simple tests that might be made that will possibly eliminate future difficulties. First, before making any tests, it would be well to wipe down all shelves and other dust catchers. With a hand bellows, or if one is not available, a tire pump will serve the purpose, blow the dust from the intricate wiring and other places not accessible with a cloth. Now we are ready to make the necessary tests. If we are lucky enough to have access to a tube tester, it will be a simple task to test the tubes. If you are one of the many unfortunates, you might take them to the nearest radio repair shop. A new 35mm sound motion picture projector which will facilitate wider television programming has been perfected by the television equipment section of the RCA engineering products department. The new projector, which throws 35mm pictures directly on to the pickup tube of the television camera for conversion to video signals, is based on the Brenkert professional theatre motion picture projector. It employs a new type of electronically-triggered, highintensity "gap-lamp" which is virtually Next, the filament, grid and plate voltages might be checked, as well as the resistances and the exciter supply. You might find the exciter lamps are receiving an over-rated voltage, causing them to be short lived. Of course, an ammeter, a voltmeter and an ohmmeter are necessary for these tests. Again, if you are one of the unfortunates, you might borrow the necessai-y testing equipment from the local radio repair shop. I'm certain you will find these simple tests will eliminate much future trouble, provided any faults which are free of heat and eliminates the need for a moving shutter. The periodic flashes of the lamp, coupled with a specially designed film drive mechanism, make it possible to use standard 35mm film, which normally operates at 24 frames per second, to provide the 60 interlaced fields, or 30 frames per second required for television. The operator is shown at the monitor and changeover control rack, which contains the switches for the" remote starting and stopping of the projector, as well as the remote controls for operating a slide projector. found are remedied immediately. Finally we encounter the power unit. It is essential that this piece of equipment be not neglected. It. too, must be kept spotlessly clean, free from all excess dirt, grease, grime and oil, so it may operate with maximum efficiency at all times. I'm a bit wary of using either fine sandpaper or emery paper on the commutator or slip rings. I always like to rely on carbon tet for cleaning. Check the brushes to see (Continued on page 36) 34 The MODERN THEATRE SECTION iBUji
I BOXOFTICE for use in Drive-In Theatres where only single phase power is available. THE STRONG ELECTRIC CORP. 87 CITY PARK AVE., TOLEDO 2, OHIO PROJECTION ARC LAMPS-RECTIFIERS-REFLECTORS USE THIS COUPON FOR A FREE DEMONSTRATION OR LITERATURE THE STRONG ELECTRIC CORP. 87 City Park Ave., Toledo 2, Ohio. pj I would like to have a demonstration oi the Mogul Projection Arc Lamp in my theatre, without cost or obligation. [~~] Please send free literature on the Mogul Projection Arc Lamp. Name - Theatre Street City and State - : : May 22. 1948 35
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LEO TO THE RESCUE! / year's JHy. It
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VIDEO'S YEARLY FILM NEEDS SET AT 18
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"Hi, Jinx. .." "Hello, Tex. . ." JI
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. . Jinx: Can I tell about The Pace
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Skouras Reports on Economy: // Now
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1 1 America's — Go and see for yo
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u .V Who is Henry Morgan ? TEl I X
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He's the guy|]];lJjQ says is "a fir
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directors ' -^"^ The Foreign Pictur
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Argentina Suspends Remittances to U
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. THE IRON CURTAIN MAKING THE YEAR'
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CHESTER FRIEDMAN EDITOR HUGH E. FRA
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McGUIRE • HILLARY BROOKE • ADEL
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I I Anniversary Observed With Big C
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Ad Deal in Cincinnati Mr. Flatfoot
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WINDOW TIEUPS Still highly popular
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NOW being distributed to all subscr
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Adv. A THOUGHT OR TWO FROM HYGIE ,
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I Academy Film Series Favored by MP
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Most Drive-ins in USA Equip with RC
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PHILADELPHIA ping Crosby slipped in
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. . " WASHINGTON /^harles Schlaifer
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LLYWOOD NEWS AND VIEAVS THE PRODUCT
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4 Illinois Thealremen To Meet June
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. . . Peter . . Helen . . Perry Fil
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Sidelights of Kansas-Missouri Allie
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, Drive-In Most Drive-ins in USA I
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. . MINNEAPOLIS All Home Circuit Ma
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. . Alex . . . Marie . . . Charlott
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Carver Leads Drive To Kill Fast Tim
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Most Drive-ins in a&A ir- Equip wit
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. . . Mrs. . . — Decision Due Soo
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. . . Out-of-town . . Harold . . Jo
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Rejects Barnum's Bid For Less Clear
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Most Drive-ins in USA £
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—— 2nd — — . . William New
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. . Manager . . Ozzie . . . . The .
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— jDallas Grosses Low; iReissues
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MostDririve-ms Jti USA Equip with M
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i BOXOFFICE . . Manager From the BO
Page 101 and 102: C.WA. MacCormack, Industry Pioneer,
Page 103 and 104: Variety Will Provide Vacation for B
Page 105 and 106: Most Drive-ins 111 US.A I £(|uip w
Page 107 and 108: ! BOXOFFICE Sports Shorts Program R
Page 109 and 110: Charles Children's Shows Gain Favor
Page 111 and 112: Odeon Will Construct Five More Quon
Page 113 and 114: ommunJ ormunce jj THE PROJECTOR All
Page 115 and 116: . . The . . Toronto I TORONTO /3 pc
Page 117 and 118: . . Paul — . . Bill FPC Ready to
Page 120 and 121: f«D99 B" PICTURE? NO...A DRAFT! Po
Page 122 and 123: WHY DRIVE-INS EVERYWHERE RELY ON BA
Page 124 and 125: w KROEHLER PUSH -BACK Seats Give Yo
Page 126 and 127: \ SoUcC (}(Uft(ont . . . eaitA. Sea
Page 128 and 129: ~ *^~ — Jheatre Jêaiin^...THE PA
Page 130 and 131: Theatre Seating » . . The Paramoun
Page 132 and 133: about ^t d I oor Cîconomu YOUR SEA
Page 134 and 135: : L^nair fabrics . . . A GREAT VARI
Page 136 and 137: FILMS INFLUENCE ARCHITECTURAL TASTE
Page 138 and 139: ôme t lew Jjdieas IN PLANNING THE
Page 140 and 141: THEATRE DISPLAY SYSTEMS .... vom jt
Page 142 and 143: JUS! Off 1 BOflRDS Architectural re
Page 144 and 145: _y^ f-âAadena Lypera ^^rrouSe •
Page 146 and 147: — . . confections 1 — CONFECTIO
Page 148 and 149: . — i Summer Confections . . What
Page 150 and 151: ( a Remove 1 H^ Dear Subscriber: Pl
Page 154 and 155: Cine Clinic (Continued from page 36
Page 156 and 157: THE \Qûiiz POT A CAULDRON FOR COOK
Page 158 and 159: Black Light Murals Package Is Oifer
Page 160 and 161: 1 — wm News of What's New In Mode
Page 162 and 163: Mlfe New flsllwwood Premiere i^llfc
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Page 166 and 167: DIT-MCO IS tAmn
Page 168 and 169: I / r/kisu^ News of What's New In M
Page 170 and 171: Theatre Psychology and Its D.HE mot
Page 172 and 173: {2r-RUC fiuMer l/nlr /HATT/NG * Tra
Page 174 and 175: V DEO ICATE D TO SOUND AT ITS BEST
Page 176 and 177: Drive-in Don't Delay -- Specials! O
Page 178 and 179: j ] , , TOR HAS HIS SAY ABOUT PICTU
Page 180 and 181: JULY 12 m Feature productions, list
Page 182 and 183: i FEATURE CHART CHECK RUNNING TIME
Page 184 and 185: EATURE CH
Page 186 and 187: DIGEST and Alphabetical Picture Gui
Page 188 and 189: SHORTS REVIEWS Op/n/ons on the Curr
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Page 192 and 193: . . . There . . The . . She . . . T
Page 194: M PROJECTION AND SOUND SYSTEMS Manu
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