How Are Prism Lights Put in Place?
The illustration indicates the four
principal stages in the construction of Schwickart's "Sun-Burst"
prism, manufactured by the Universal Foundry Co., 283-287 Scholes
st., Brooklyn. Beginning at the bottom the first section shows
the interlocking bars, the second shows the loose glass prisms
rising on these bars, the third shows the first application of
the cement to hold the prisms in place, and the fourth or top
section shows the finished construction. Fuller details will be
given in the issue of January 9.