The Moving picture world (May 1922)

May 20, 1922 J. G. BERGER, ELECTRICAL CONTRACTOR 325 Ward Leonard Vitrohm Dimmer and Ajax Interlocking Switchboard provide the utmost in flexible control of the lighting in the State Theatre. Placed facing each other, the operator can work from one to the other with maximum of ease without taking his eyes from the action on the stage. THE platc-type dimmer installations was introd Ward Leonard dimmer sembling Vitrohm resistor characteristics of the Vitrohm plate unit can best be appreciated when its method of construction is understood. A cast iron plate of suitable shape and so designed as to give a maximum of rigidity with minimum weight is coated with a thin, insulating film of vitreous insulating enamel fused to the iron. The resistance metal in the form of wire is assembled with suitable contact buttons on the side of the plate, and covered with another coating of enamel, after which it is again subjected to the firing process and the whole mass fused to the plate. The connections between the buttons and the resistor metal are made by a special mechanical joint produced under pressure and without the use of solder. This construction is extremely, compact and gives extra good ventilation and heat distribution. It is a permanent forTn of construction because the resistance metal is held rigidly. in place and thoroughly p r o t e cted from all corrosive influences Write for booklet giving detailed information. now universally used in theatre-lighting uced by us over twenty years ago. All installations here listed are built by asplates of suitable size. The superior WARD LEONARD VITROHM DIMMER AND AjAX INTERLOCKING SWITCHBOARD INSTALLED IN THE STATE THEATRE THE switchboard a.s shown in the photograph was made to order expressly for the State Theatre, Jersey City, and was constructed in ten working days. The board represents the highest type of interlocking theatre switchboard and its many unique features recommend it to the most critical engineers and house electricians. The board proper is arranged in a very compactmanner with bus bars in perfect alignment and properly supported so as to minimize space. The angle iron frame is in skid form and is not dismantled when shipped, thus allowing the customer to locate his board in position without disturbing a single bolt or nut. All materials throughout are rugged and built for severe and long usage. Each handle is arranged with a special indicating quick change trigger, permit ting presetting and is very simple in operation. The entire equipment is made with the intent i o n of harmonizing with the other fittings of a first class theatre. SOME RECENT WARD LEONARD INSTALLATIONS LOS ANGELES, CAL— LOEW'S STATE THEATRE PASADENA, CAL.— RAYMOND THEATRE SAN FRANCISCO, CAL.— GRANADA THEATRE CHICAGO, ILL.— NEW CHICAGO THEATRE BOSTON, MASS.— LOEW'S THEATRE DETROIT, MICH.— CAPITOL THEATRE JERSEY CITY, N. J.— HESTER THEATRE BROOKLYN, N. Y.— NATIONAL THEATRE NEW ROCHELLE, N. Y.— LOEWS THEATRE YONKERS, N. Y.— STRAND THEATRE CLEVELAND, OHIO— MUNICIPAL HALL DALLAS, TEXAS— LOEW'S THEATRE NEW YORK CITY— LOEWS 83d ST. THEATRE NATIONAL THEATRE Ward Leonard EUectric Company MOUNT VERNON, NEW YORK SOME RECENT AJAX INSTALLATIONS STATE THEATRE— JERSEY CITY READE THEATRE— NEW BRUNSWICK, N. J. LOEWS NEWARK THEATRE— NEWARK, N. J. LOEWS NEW ROCHELLE THEATRE— NEW ROCHELLE, N. Y CENTRAL THEATRE-JERSEY CITY, N. J. LIBERTY THEATRE— NEW YORK CITY AMBASSADOR THEATRE— NEW YORK CITY JOLSON'S THEATRE— NEW YORK CITY LOEWS GATES AVENUE THEATRE— BROOKLYN, N. Y. BAY RIDGE THEATRE— BROOKLYN, N. Y. BELLEVUE THEATRE— MONTCLAIR, N. J. RAJAH MASONIC TEMPLE AUDITORIUM— READING, PA. Safety-Rite Electric Products Company Successors to AJAX ELECTRIC COMPANY 56 BALDWIN AVE. JERSEY CITY, N. J.