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Plans of complete electrical installation for Rivoli theatre, Baltimore, Md., drawn bv Herbert Griffin, technical engineer, Nicholas Power Co. Other
drawing appears on following page
System Makes Model Projection Room
(Continued from page 2323) seen facts. If an entry's overlooked there's more deuce to pay than if a projectionist used the celluloid in a film to make himself a collar.
Vying with fire prevention measures for top-notch honors are the condenser adjustments and baths. "We use an optical system," says Mr. Hagert. "Many houses use whatever size condenser is obtainable in the city, overlooking the fact that the amount of current used is of great importance in relation to the illumination of the screen.
"After the small Wilson, for which I was projectionist, was replaced by the new Rivoli, we found it necessary to increase the focal length of the condenser in proportion to the increased current. The right combination is essential if 'ghosts' are to be kept off of the screen. Then, too, overheated condensers crack. Our experi
ments finally led us to use condensers of three sizes.
"Our throw is 137 feet on a 15 degree drop."
Rivoli condensers are given a bath every morning as religiously as time itself. Soap and water are used. Then, to preclude the possibility of getting the condensers mixed when they are re-inserted in the machines an odd little card does the trick.
This card is nothing more than ordinary cardboard measured off, cut and accordingly noted on the edge as to the size of the condenser it will fit over. By placing it over a condenser one tells in a flash the size of the glass. Otherwise, or unless another measurement were used, a condenser of one size would be put where another size should go.
The Fulco rewined was motorized by Mr. Hagert and he now contemplates an automatic switch which will stop rewinding when the film breaks.
A black glass for the shadow box has been found more satisfactory by the chief
than a red glass in decreasing the amount of illumination that strikes the eye while watching carbon.
Few things enthuse Guy L. Wonders, manager of the theatre, and Chief Hagert, as much as the film speed and footage indicators. The system is connected with Mr. Wonders' office, the orchestra pit and the projection room. It leads to the best co-ordination of all forces in the house toward getting a show over on time. Mighty rarely is the occasion that a telephone call to the Rivoli does not tell you within half a minute what time the feature goes on, or the comedy, or the overture or any of the special arrangements comprising the Rivoli's program.
Canton House Opens
Canton, N. Y., now has a beautiful $50,000 picture theatre. It was erected by L. E. Rogers and has a seating capacity of 1,400. The town has a population of 3,500. Roy Allen conducts the orchestra. — Taylor.