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1947-48 Theatre Catalog, 6th Edition, Page 143 (131)

1947-48 Theatre Catalog, 6th Edition
1947-48 Theatre Catalog
1947-48 Theatre Catalog, 6th Edition, Page 143
Page 143

1947-48 Theatre Catalog, 6th Edition, Page 143

all angles, that is, directly down the street, from automobile trafiic, and from the opposite side of the street if they are installed at an angle other than 90 degrees to the front of the theatre and converging towards the center. If the entrance is narrow the marquee signs will form a V, but if of normal width another attraction sign parallel with the theatre front will result. The face of this sign should be kept back at least one foot from the curb line to preclude the possibility of its being damaged by passing trucks. This requirement is found in most building codes as is the requirement of minimum height of the sign above the sidewalk. These requirements should always be checked before proceeding with the design.

Sign Lighting

There are three kinds of lighting to consider in designing theatre signs, that is, decorative lighting, lighting for changeable letters, and the lighting of the marquee soflit or ceiling.

For decorative lighting there is a choice of either neon or incandescent borders, or a combination of both. These can of course be controlled on flashers for any desired effect.

The lighting behind the changeable letters is the most important and there are certain requisites that must be adhered to in order to produce the best legibility for the letters and the message which the sign is trying to convey.

Two general types of changeable letters are in common use: First, the glass letter, mounted on sheet metal which shows the light through the letter itself; and, second, the silhouette letter, which is cast aluminum or plastic and which is hung in front of a glass panel which is completely lighted. The latter method produces a readable sign at the greater distance, and it has the further advantage of dispersing all the light produced by the current consumed, and consequently makes for a brighter theatre front.

The simplest and most effective construction of the light box behind the glass panel, to produce an even lighting over the entire surface and to prevent lamp image is to install the light sockets on the back of a sheet metal box which should have a depth from 71/2 to 8 inches from the face of the glass (Figure 1). The sockets should be placed 8 inches on centers both ways, and for highly competitive areas should be wired for 40 watts to the socket, but for outlying or neighborhood theatres 25 watts to the socket will be found satisfactory. In this connection it should be noted that some local codes limit the number of sockets which can be connected to one circuit, but in no event should the total load to a circuit be more than 1,320 watts.

For maximum reflection the inside of the light box should be given a good coating of white enamel, and it is ime portant that this surface be frequently cleaned to insure the greatest efficiency. Provision must be made for draining the light boxes since the assembly cannot be made weather-proof.

The type of glass used in these attraction signs is important. If a flashed opal glass is used, the diffusion is not good and a spotty effect will be apparent.







FIGURE 2*Sheet metal to: a soi'tit should be 18 to 20 gauge and installed without visible bolts or screws by bending up the edges of the sheets batting them together, and hanging them as shown.

The best sign manufacturers use a potopal glass which gives the best diffusion of light and as a consequence, the best sign readability.

The use of cold-cathode tube lighting for attraction signs is being experis mented with and has been used with varying success. However, the principal claim, that this type of lighting pros duced the same amount of illumination at less cost, is offset to a great extent by the increased cost of the necessary wiring, transformers, construction, and so forth, to accommodate the tubing.

Sheet metal used in the construction of the attraction sign should be 16 gauge to 18 gauge for the structural portions, reinforced with angle iron. For the purely decorative portions 24 gauge metal is satisfactory.

Marquee Lighting

The sofiit or ceiling of the marquee can, of course, vary in design using incandescent or neon, or a combination of both in special designs, obtained by confining the lighting in open sheet metal channels producing the desired effect, but the tendency in the past few years

is towards the perfectly smooth soliit with an all-over pattern of stud lighting at 12 to 18-inch centers, which gives a clean streamlined effect and sparkle and life to this area not otherwise obtained, also the greatest amount of light on the sidewalk in front of the entrance, which is desirable.

The lighting of the soffit should be Wired so it can be controlled by at least three switches, one for lights around the exterior perimeter, one for the general field which can be turned off after the box omce is closed, and one for a central feature. A special circuit should also be installed with outlets for flood or spot lamps which can be used to highlight display advertising underneath the marquee and special features, or both. A special outlet should also be installed near the center of the sofiit and connected to the emergency lighting syss tem, to provide light at this point in case of failure of the normal lighting service used in the theatre.

The sheet metal for a soffit as de scribed above should be 18 to 20 gauge depending on the size of the sections used and installed without visible bolts or screws by bending up the edges of the sheets, batting them together and hanging the assembly to the structural supports (Figure 2).

Recessed or exposed iteyes" should be installed around the entire perimeter of the marquee and about 12 inches on center to provide for the hanging of special advertising banners.

After treating the metal surfaces to be painted with an acid solution, a synthetic enamel primer should first be mist sprayed on, followed by a sprayed-on coating of synthetic outdoor enamel thoroughly to cover all surfaces until the desired colors and covering result. A too heavy coating of enamel is not recommended on account of tendency to scale or crack.

FIGURE 3-1n designing the supporting structure a reputable sign manufacturer should be consulted on the location of the steel channels required around the perimeter of the marquee, which must be

set back the required distance from the lace of the sign

. Provision must be made for metal counter flashing on the back 0! the finished sign which will fit over the flashing provided by the roofer.






:- luau.



1947-48 Theatre Catalog, 6th Edition, Page 143