Exhibitor's Trade Review (May-Aug 1925)

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Page 44 J. H. WELSH DESIGNS SPECIAL CURTAIN CONTROL MACHINE Master Designer Calls on All His Past Experience and Knowledge to Invent a Perfect Control System Nothing but the finest ; was the standard set for the Embassy Theatre when it was built, and to that end the task of equipping the stage with apparatus for opening and closing the curtains and drops was allotted to J. H. Welsh, designer and builder of mechanical and electrical stage equipment. World-Wide Use A contrivance personally designed and constructed by J. H. Welsh was installed. It is the J. H. Welsh Remote Electric Dray Curtain Control Machine and the J. H. Welsh Noiseless Steel Track, this apparatus being already used in hundreds of theatres throughout the United States and abroad, there being even a set in use in Hong Kong Theatre, China. 26 Foot Steel Track For the Embassy, a control machine and a 26 foot steel track from which the curtains hang, was installed, the entire job requiring but two days' time. The machine is built on a grey iron base 13x16 inches and is a single unit, all parts substantially built and aligned. The driving mechanism consists of a leather cone attached to motor shaft. The driven mechanism consists of two adjustable friction discs of cast iron. This combination of leather and iron causes the noiseless and sure operation. Complicated Switches Eliminated Uni-directional ]/A H.P. 110/220 Volt motor eliminates any complicated wiring systems and switches. The mechanical eccentric thrust on the friction disk shaft gives directional opening or closing motion to the curtain travel, BHB^HHkl The Embassy Theatre, (■jyfl^Bfl seating but six hundred, is one of the j. * finest examples of the JB new "intimate" 'C39 , type. u thus instituting a mechanical device that is operated electrically without making any changes. The curtain is controlled from any point desired on the stage. The steel tracking used by Welsh employs a rotary fibre disc, different from other rotary track systems, making for noiseless and smooth operation. The tracking is fabricated of 2^2"x^"x 3/16" channel steel, with specially prepared and polished maple lining firmly secured on lower lip of channel. Curtain Travellers have rotating Fibre Discs spaced 12" apart. Best grade %" steel Tiller rope is furnished as draw line for the curtains. Other inferior track systems used manila or hemp rope which has not the lasting and dependable quality of the steel. Double pulley sheave at one end and single pulley sheave at the other, form an endless line that cannot jump or jam. The fibre discs riding over maple slides assure noiseless operation and long life. Exhibitors Trade Review Absolute Safety from Film Fire Assured {Continued from page 40) degree of protection against film fires, protecting not only the film housed within it, but the surrounding property as well. In the Film-Safe, each film is housed in a separate and completely insulated compartment, there being no communication between it and any other compartment. Each of these compartments is individually vented to the outer air, thus affording complete protection both internally and externally. Films are suspended in the compartments in a film carriage which is automatically moved forward when the door to the compartment is opened, thereby making each reel of film easily accessible for handling. Thus, because of the intimate character of the Embassy, and the limited amount of space allotted to each unit of the theatre, it is easily understood why the American film-safe was chosen. Primarily because it prevents fire and because it conserves all the available room for film storage. The door to each compartment closes and latches automatically, practically sealing the film within a completely insulated cell, vented to the outer air through an automatic pressure relief valve. The insulating medium used in FilmSafes contains the principle ingredient of "Kieselguhr" or diatomacious earth, which is conceded to be most efficient heat insulating material known to science. This material when in a semifluid state is poured into the steel shell of the safe and allowed to set, then baked until it becomes a tough, strong, monolithic structure, surrounding each film compartment individually. It also maintains humidity in the film it surrounds, thus averting brittleness. By reason of its unit construction, the Film-Safe System when once installed can easily be added to or re-arranged, thus constituting a veritable film library FILM SAFE USED IN EMBASSY