Exhibitor's Trade Review (May-Aug 1925)

May 30, 1925 57 How you can boost your summer business Haven't you often wished for some SURE way of boostingreceipts in hot weather? You can be SURE that Typhoons will do it for you because they are doing just that in more than 2,000 other theatres. • Anyway, you ought to know something about it. Get our. Booklet T-ll Typhoon Fan Company 345 West 39th Street New York Philadelphia Jacksonville Dallas New Orleans "DE LUX Interchangeable (Flashes on and off) PAINT YOUR OWN ELECTRIC SIGN THIS SPACE DISPLAY SIGN FOR YOUR DAILY PROGRAM The most practical, most effective and lowest priced display of its kind on the market. Can be placed on the stage, in the lobby, over the ticket booth or in stores around your neighborhood. The sign inserts are to be painted on transparent paper by your sign man. This paper is obtainable in six different colors. The patented mahogany frame in front of the sign box, which is 15 inches wide and 24 inches high, and consists of two frames hinged and grooved together, grips the inserted paper and tightens it stiff as a drumhead. An ideal publicity medium that is being used extensively by Chicago Exhibitors. Ascher Bros, have several for each one of their 15 theatres. Price $10.00 F.O.B. Chicago In lots of 6 — $8.50 ea. 100 Sheets Transparent paper in assorted colors, $2.50. Mail check with order or shipment is sent C. O. D. Can be returned after five days tryout if not satisfactory. DE LUXE STUDIOS 833 W. Washington St. CHICAGO, ILL. THEATRE VENTILATION AND SUMMER COMFORT (Continued from preceding page) radiates warmth above the heads of the audience. At audience level, a gently moving mass of air, warm or cool, constantly refreshes the orchestra occupants, while other streams serve the gallery tiers of chairs. The two or more currents finally are drawn out of the auditorium at the vacuum gratings behind the rearmost rows of seats. MODIFICATIONS IN PRACTICE WITH THEATRE SIZE If the theatre is small, the grating locations are a simple problem, and the size, number and locations of the openings increase as the auditorium changes from the long, low, narrow, store-like chamber which forms the cheapest type of moving-picture house to the large, triple-galleried, highceilinged house, which represents the home of grand opera and formally-staged spoken drama. Commencing, then, with the small, narrow "movie" playhouse, gratings at right and left of the screen stage discharge quantities of air horizontally the length of the auditorium from the elevation of about eight to ten feet above the floor at the front row of seats. This air is given a mean speed of about 500 to 600 feet per minute, and the size of the gratings should be such that about 25 to 30 cubic feet of air per occupant per minute should be supplied. Considering the theatre to be long and fairly wide, with a low ceiling, additional side-wall supply gratings go in on either side of the chamber at six or seven feet above floor level, discharging horizontally at 300 to 400 feet per minute. The system of proscenium side gratings and side-wall gratings maintains constant movement of the air across the seating space of the entire house. Should this theatre have an end gallery, the gallery is treated as a separate auditorium. One for a narrow theatre, and two ceiling supply gratings for a wide theatre, discharge incoming air vertically at the line of the foremost gallery seats. Side-wall supply gratings act as auxiliaries where necessary in the side walls of the gallery. The comb'nation maintains a continuously moving stream in the gallery at audience height, as the discharged supply moves to the intake openings of the vacuum system. THE ELABORATE VENTILATING PLANT With the enlargement of the theatre described, which is a gradual improvement on the transformed store property made into a theatre, to the high-ceiled special auditorium, a more complicated system takes place on the same general plan. There is usually a plenum chamber located beneath the orchestra or pit of the auditorium, from which ducts are led to the auditorium side walls, which deliver the air at floor level at either side of the audience. The ceiling formed by the lower gallery is also the point of delivery for a long narrow, supply grating. Air is discharged into the auditorium below the floor line of the lowest groups of boxes. This air escapes through vacuum openings at the rear of each gallery and at the rear of the ceiling of the lower gallery, as well as at a long, narrow grating across the orchestra pit below the stage. The net result is a gentle air current against the faces of the audience in all parts of the house and, in the case of the front seats in the orchestra rows, avoidance of the rather strong draft which is created there by the unmodified system. An installation of this type has for summer a special vacuum ventilator in the ceil (Continued on page 66) WELSH DEMONSTRATES No matter what the condition of the average stage may be it can always be improved upon with some sort of electrical or mechanical equipment that will help give a show that isn't all "film." The stage is a seat of mystery, a region of hustle and bustle, outside the vision and unheard by the ears of an audience. At the exhibition of the motion picture equipment dealers, J. H. Welsh was demonstrating a curtain motor device that draws the curtain smoothly and noiselessly in booth 215. This has an altogether delightful and pleasing effect upon the audience, and thus full and undivided attention is riveted upon the performance. The firm also exhibited their spot lights, box lights, flood lights, border lights and dimmers. Brenkert Projection Co. Offering Attractive Display One of the most interesting and attractive displays in connection with the motion picture equipment exhibition at the auditorium was that of the Brenkert Light Projection Company of Detroit in Booth 25. This firm specializes in theatre and stage lighting apparatus and effects, which also includes the Brenkert Combination Projector. The color effects thrown by this machine are amazingly real and the hues blend beautifully. There is, for instance, clouds passing the moon with the moon stationary. One can almost visualize standing under a canopy of real sky. Then there is the moonlight water ripple which theatregoers have often seen and which greatly enhances any act.