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1945 Theatre Catalog, 4th Edition, Page 159 (137)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 159
Page 159

1945 Theatre Catalog, 4th Edition, Page 159

THE DEPRESSED ELEVATOR ARCADE, showing stairs to the main floor, is in the T. Eaton Store, Toronto. Note the use in windows, showcases, and railings of Monel metal, product of the International Nickel Company, Inc., and provided in this instance through the Canadian associate, the Architectural Bronze and Iron Works, Ltd. Such uses of Monel suggest possibilities of the alloy in theatres, for railings, display frames, and the like.

are roughened sufficiently to permit the paint to adhere.

Zinc has the big advantage of low,

cost as a protective coating on steel. Such surfaces will continue to be used. It is probable that means will be found to prevent gray coating characteristic of weathering. The zinc die-casting field should remain active. Zinc compounds will find continued use in paints.

There should be a large postawar demand immediately for galvanized products, especially for replacement purposes. Some competition is expected from aluminum coated steel.



Cadmium is infrequently used except in electroplating. Alloys of cadmium and tin and of cadmium and antimony are more commonly used in Great Britain than in this country.


Chromium metal is used in alloys for electrical resistors, corrosion-resistant alloys for many purposes, chromium bronzes of high tensile strength, and in special tools and equipment.

Chromium may enjoy peacetime use in electroplating.


Gold leaf, one of the oldest of the decorative materials used in architectural work, still has its place in modern decoration, For exterior work, 24-carat gold is used. Although most foils are made by carefully rolling the metal between highly polished rolls with special lubricant coatings, gold foil is still made by hand by reduction with a hammer. Mechanization has come slowly in the manufacture of gold leaf.



Magnesium is not used for exterior decoration, but rapid development of magnesium alloys and its low cost on a volume basis are favorable toward future uses. There is an abundance of producing capacity available.


Palladium leaf is also available where a white, metal finish is desired. It may be bright or matte finished.


Silver is not used on exteriors, due to the rapidity of tarnishing in sulphurcontaining atmospheres, and interior use is restricted for the same reason.


During the last 15 or 20 years, great strides have been made in the commercial development and utilization of the socalled minor metals, many of which have been heretofore classed as museum ifcuri >ositiesfl This development has gone

hand in hand with developments in other fields, notably vacuum technology, comprising the manufacture of electric lamps, radio tubes, photo-electric cells, mercury arc rectifiers and other glassenclosed apparatus and devices. Next to these demands have been those of the building and transportation industries for metals and alloys which are stronger and lighter, more resistant to fatigue and to corrosion, cheaper and better than any metals and alloys ever produced in the past.

To appreciate the radical changes that have come about, we might recall that, less than a generation ago, airplanes were constructed largely of wood, and not long ago stone was considered an essential element in building constructionl

Electro-chemistry has contributed fundamentally in meeting the most exacting demands of various Twentieth Century industries. With the aid of modern, scientific apparatus, it has been possible to evolve products heretofore not possible by non-electrical methods.

Generally applicable in these developments has been the observation that, as soon as the demand for raw materials from which certain rare metals are derived becomes sufiiciently insistent, chemists, geologists, miners, prospectors, and explorers from all over the world respond, and, often sooner than expected, locate deposits of commercial importance

To recount in detail the many developments in the field of rare metals that have contributed so largely to presentday enterprisesesuch as cinematography or televisionewould lead far beyond the scope and purpose of this article. Accordingly, only a few typical cases will be discussed.

ARCHITECTURAL DECORATION, protected from the elements by galvanizing, has wide possibilities, as repre. sented by this ornamental railing surmounting the old California House. According to the American Hot Dip Galvanizers Association, which furnished the picture, this railing was installed in l9l4. Hot dipping is the process of galvanizing by submerging the article in a bath of molten zinc to form a thick, uniform deposit.

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1945 Theatre Catalog, 4th Edition, Page 159