Homer J Simpson spake thus:
Some projectors dropped in a metal shield with small holes punched in it for
still frame projection.
My old Hell & Bowel Filmosound has a neat little fail-safe "trap door"
shield like that; a little perforated aluminum screen that's blown aloft
by the fan so it's normally out of the way. If the fan ever fails for
some reason, the screen drops into the light path.
--
"In 1964 Barry Goldwater declared: 'Elect me president, and I
will bomb the cities of Vietnam, defoliate the jungles, herd the
population into concentration camps and turn the country into a
wasteland.' But Lyndon Johnson said: 'No! No! No! Don't you dare do
that. Let ME do it.'"
- Characterization (paraphrased) of the 1964 Goldwater/Johnson
presidential race by Professor Irwin Corey, "The World's Foremost
Authority."