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1945 Theatre Catalog, 4th Edition, Page 398 (374)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 398
Page 398

1945 Theatre Catalog, 4th Edition, Page 398

IN THE lOBBY of the Hollywood Theatre, Sioux Falls, South Dakota, a ceiling Anemostat, in combination with a lighting fixture, is mounted in the bottom of the indirect lighting trough. The circular design of the diffuser harmonizes pleasantly with the circular ceiling treatment used in coniunction with the indirect lighting. Note also the complementary treatment and use of the colors in the carpeting of this circular lounging urea.

diffuser can distribute large quantities of air at high temperature differentials, yet without creating more than adequate air movement throughout the audience.

Two of the flaring members or cones act as injectors only, while the other cones have the dual functions of ejectors and injectors. This results in what is called aspiration, in other words, a suction which entrains the room air. Aspiration is not to be confounded with secondary air motion or air-volume mo THE UNUSUAL ARCHITECTURE of the upper foyer of the Trans-lux (52nd Street) Theatre, New York make draft-free air distribution very difficult. An Anemostat has been installed in coniunction with the light fixture to minimize the difficulty. Note the upper position of the mural as part of the lower foyer decoration.

tion, which is just an expression of how often a given volume of air is moved in a given space before it is extracted from the space.

Use of Air Diffusers

There are a number of advantages, foreign to the main purpose of this device, of service in ironing out headaches which would otherwise be difficult to overcome with air-conditioning systems.


For example, the effects of any delayed action of the automatic controls are not so noticeable because of the well diffused air, while the absence of drafts and any over-cooled or under-cooled spots keep the controls more steady and free from erratic operation. For the same reason, the location and size of theatre duct outlets become of less importance and fewer may be used. High duct velocities and any fiuctuations in the supply of conditioned air are also less noticeable.

This air diffuser is often used also as a cure for the ills of a sick air-conditioning system, since, within reason, it ace cepts things as they are, takes them as they come, either high or low velocities. In a sick system, stepping up to higher velocities will help out where the heat in the theatre has increased, or where it has been underestimated.

From all that has been said, it will be seen that duct sizes can be substantially reduced where these air-diffusers are installed. This is because the Anemostat makes possible both higher velocity and lower temperature of the cooled air in summer or higher temperature of the heated air in winter.

Other Applications

This air diffuser needs no manual supervision, has no directional louvres, and nothing moves within it but the air. It can be blended effectively with modern schemes of decoration in theatres, creating varied and unusual effects, and it can be combined with light fixtures or light effects.

A still further application is in connection with the critical spots in a theatre, such as the extreme rear of the balcony, as well as immediately under the balcony in theatres where the ceiling heights are low. Here a wall-type design may be used, for it operates the same as the ceiling-type, except that radially it diffuses only over 180 degrees.

AMONG THE MORE MODERN THEATRES, from the point of View of architectural design and interior decoration, is the Trans-Lux (85th Street) Theatre, New York. Here an Anemostat air clitfuser has also been used as a ceiling fixture. Note the symbolism of the back-lighted "world" and its tie-ins with the wall decorations.

1945 Theatre Catalog, 4th Edition, Page 398