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Blockhead Unidor 400s from The Bronx
Photo Gallery: Streetlights

Blockhead Unidors from The Bronx
Shot June 1998, at corner of Baychester Blvd and Bartow Ave, in the heart of Co-op City in the northeast Bronx. It is very rare these days to see two of these early 70's Unidor 400s together on the same twinmast. These are truly classic lumes, pioneers of NYC's HPS era. I first noticed them in Sunnyside, Queens, along Queens Blvd, sometime around 1971/72. The city had not yet taken on the Thomas Betts TB-327. The Unidors had the stupidest visage of any luminaire I've ever seen. They looked like Blockheads and that is what I called them. The constipated look of the 327's , which stole the ball from them as the premier HPS fixture in the mid 70's, is a distant second in the stupid-look race.
That I even know their identity is owed to the precious data sent to me by site contributor Sanders Saltzman, also a Queens resident although not related to me. Sanders supplied me with a copy of a Unidor catalog. They were manufactured by McGraw Edison and were boosted as being a snap to maintain, due to their detachable power deck. Their design was touted as "simple" and their expression certainly made them look simple. The 400 shown here uses, of course, 400w lamps. A smaller brother model, the 250, used 100-250w lamps, but I never saw them used here. I suspect most of the 400s use the same refractor bowl as do the TB327s. In any event, the Unidor's spec sheet says it could be supplied with either a prismatic borosilicate glass, or polycarbonate bowl.
Today, the Unidor 400 is definitely an endangered species here.

© 1998, Jeff Saltzman.