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1945 Theatre Catalog, 4th Edition, Page 409 (385)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 409
Page 409

1945 Theatre Catalog, 4th Edition, Page 409

National Fans and Air Washers


1. Designed and built especially for theatres by the world's foremost manufacturer of cooling, heating, ventilating, conditioning and allied equipment.

2. Ratings are certified and are in accordance with the standard test code for centrifugal and propeller fans adopted jointly by the N.A.F.M. and A.S.H. & V.E.

3. Operates at a. lower speed for a given capacity than any other type of fan.

4. For a given speed it delivers more air per revolution than any other type fan.

5, It is economical in power consumption, quiet in operation, smooth in performance, durable, and occupies a minimum amount of space.

6. THE NATIONAL THEATRE SUPPLY FAN is rugged and strong but light in over-all weight.

Proper proportionng of spray chamber dimensions with areas of scrubber and eliminator surfaces and scientifically dcslgned Spray nozzles combine to produce a maximum sensible cool in; effect without overhumidificatiorl.

All action is sclentiflcally

calculated to give tho

maximum cooling results

with the minimum of

power consumptlon based on the manufac< ;

turcr's 55 years' experi- , , once and research. l

Correct atomintion and

uniform spray is the res ,

sult of a properly pro. ) l i ' portioned piping system

whlch feeds water uni formly to the die-formed

spray nozzles.

The tank is exceptionally strong and rugged. It is constructed of not to gauge steal-all seams and joints are welded and pennanontiy Ink-proof.


MOTION-For the refreshing, cool ing effect of an ample, circulating supply of fresh, outdoor air,

NATIONAL THEATRE SUPPLY FANS are the first step in

comfort cooling. They are designed and built especially for

theatres . . . smooth and quiet in performance, durable, compact, and capable of moving tremendous quantities of air, year in and year out.


CLASS I AIR WASHERS cleanse, purify and freshen the air,

remove bacteria-laden dust and water-soluble odors, and have a

remarkable cooling edect (by evaporative cooling). Air is

brought into intimate contact with water, then sweeps through the theatre like the fresh breeze that follows a rain. Additional cooling effect is provided when cold fiwell water" is used. (See cooling by fichilled" air, below.)


SUPPLY CLASS II AIR WASHERS (Dehumidifiers) give

remarkable Comfort-Cooling effect when ftwell water" 55" F.

or colder is available. Utilizes the cooling effect of the cold

"well waterfl and also washes water-soluble dust and odors from the air. Used with your present or new National Theatre Supply Fan, the Class II Washer provides tremendous quantities of clean, moving, fichilled/i nature conditioned air. If you have ffcold water" in limited quantities, it can be used in combination with recirculated city water, either with the Class II Washer or Class I Washer.

MW The class 1 Theatre Air 1 , Washer with its single

bank of sprays is only 42 inches long. other types of washers not as effi- r cicnt require spray chams - hers as much as 6 or 1 ' ft. in length with a single

spray to do the same job.

. The Washer casing ls constructed of rust resisting galvanized iron reinforced with extra stiffening. All Washers I e ,; are so designed as to * l permit quick. easy ini stallatinns in theatres.

Centrifugal spray nozzles

i ' are die-formed and are

\ designed with a large

. * cylindrical cavity so that

i l . the water is given a rapid

' l ' whirling motion and Is

discharged in tho form of a fin: spray.

Air Washers on machine made so that such component parts as tho scruhher and eliminator plates are all produced oxactly alike and or together at tho proper angle.

ADVANCED dosign, quality and precision manufacture of our comfort cooling oquipmont or. unmistakable. (Class I Thootro Air Washer shown above.)



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1945 Theatre Catalog, 4th Edition, Page 409