Handbook: 15 of 287
LUXFER PRISM INSTALLATIONS EXPLAINED.
In installing Luxfer Prisms, they have been
considered as a new light transmitting medium, and have been applied to
the better class of existing buildings in fixtures peculiar to themselves
and appropriate to the buildings. Each case required some special
treatment at the hands of the architect of the building.
Lucidux. It has been
found impossible to light basements in a satisfactory manner by any device
placed in the pavement alone. Successful lighting has been accomplished by
combining with the Luxfer Prism pavement lights a vertical prism place
technically called the "Lucidux," hung as an apron between the basement and
the vault under the sidewalk. The lucidux receives the light from the
pavement prisms and projects it into the basement.
lights vary greatly among themselves with reference to the volume of light
which they are able to transmit. When compared with the results of the
common pavement prisms the volume of light transmitted to the lucidux by
Luxfer Pavement Prisms is enormously increased by reason of their carefully
calculated surfaces and by means of the prisms on the ends of the pendant.
Window Plates are such prism plates as are
substituted in the window sash for the glass ordinarily used. Such
prism plates may be used for the entire window or for a single sash or
a portion of the sash, or for a transom in store fronts.
A Forilux is a prism plate of any given
size appropriately mounted in an independent frame. This is affixed to
the building where required in a vertical position in or opposite the
A Forilux usually clears the reveal and is attached
to the walls about the opening in a simple manner, flush with the wall
faces. The walls are not mutilated beyond the drilling of a few small
holes in the jambs or soffit of the opening, the idea being to preserve
the individuality of the fixture as something desirable in itself, and
at the same time respect the original design of the building.