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AMERICAN LUXFER PRISM COMPANY
Luxfer Prisms for Lighting Buildings with Daylight
29 EAST MADISON STREET
37TH AND MORGAN STREETS
CHICAGO, Heyworth Building
BOSTON, 49 Federal Street
CLEVELAND, 419-420 Citizens' Building
DALLAS, Builders Exchange
DETROIT, Builders Exchange
DULUTH, 310 West Michigan Street
KANSAS CITY, 909 New York Life Building
LOS ANGELES, 1835 South Main Street
MILWAUKEE, 1717 Wright Building
NEW ORLEANS, 904 Hennen Building
NEW YORK, 507 West Broadway
PHILADELPHIA, 411 Walnut Street
ROCHESTER, 38 Exchange Street
ST. PAUL, 365 University Avenue
SAN FRANCISCO, 1202 Hearst Bldg.
Sole manufacturers of all original
Luxfer Prism Glass Products used
in the daylighting of buildings in accordance with the
Luxfer Prism Transoms and Windows,
Luxfer Prism Canopies and
Luxfer Prism Floor-, Ceiling-, and
Roof-Lights, Luxfer Vault Lights, Luxfer
Prism Reinforced Concrete Sidewalks, Luxfer Ready-To-Set
Sidewalk Light Slabs and Luxfer
"Crystolux" Anti-Slip Sidewalk Finish.
The extensive research work and
experiments carried on by this Company have proven the
absolute necessity of the application of scientific
principles to the daylighting of large interiors. Each
contract, therefore, undertaken by this Company, is
executed under expert supervision, and Engineers and
Contractors are invited to submit their lighting problems
to this Company's engineers, for reports on the possibilities
and costs of proper and most effective solutions. This
service is rendered without charge and does not obligate
the inquirer in any way.
The Luxfer System.
The principle upon which the Luxfer
System is based is derived from the natural laws of refraction.
In the application of this principle Luxfer prism glass, in
sheet, square unit, or tile form, is used; this being a clear,
brilliant product, smooth on one side and with accurate angles
on the other, and so designed that over a hundred different
angles of refraction comprise the system. By the proper
selection and combination of these units with the various
angles, daylight is received and transmitted by the refracting
ribs into the innermost and darkest corners of any interior.
Each installation is made after the
sky conditions have been investigated, and the correct angle
of prism prescribed. Where there are a number of floors, each
requiring the same intensity and direction of light, the prism
angles are, of course, carried to meet the conditions of each
floor (see Fig. 2).
Fig. 1. TWO EXAMPLES OF LUXFER PRISM GLASS
Luxfer prisms are made of the finest
quality pressed crystal glass by a special process. They
will not turn purple and give a false light value to objects;
they are absolutely clear and will remain so indefinitely.
In most exacting engineering department, the construction of
the system can be relied upon as being the most practical and
durable of any known.
Lighting from the front is usually
accomplished by Luxfer vertical prisms. For the rear and
sides vertical prisms are used where possible, but in many
cases Luxfer skylights and canopies are called into requisition.
Again, Luxfer roof-lights and floor-lights have solved many
difficult problems, and are frequently used instead of light
wells. For the subgrade lighting, Luxfer prism sidewalk
lights are effective agents for reducing, or entirely eliminating
the need for artificial light.
Luxfer Prism Transoms.
Luxfer prism transoms are composed of
crystal glass prisms, four inches square, glazed in unit panels
of convenient size. When desired some or all of the panels can
be equipped with ventilators.
Luxfer prism transom panels are set in
exactly the same manner as plate glass, and in the same
arrangement of sash and frames, the necessity of skilled labor
being eliminated entirely.
Fig. 2. DIAGRAM SHOWING NECESSITY OF DIFFERENT
ANGLED PRISM GLASS ON EACH FLOOR
Fig. 3. LUXFER PRISM TRANSOM, WITH PIVOTING VENTILATOR