@EdSavoie Does "he" have one of the comparatively rare glass UV accessory filters that bolted on the exterior of the colour holder assembly, pivoted downwards rotating on its single mounting
bolt and was manually rotated up in front of the beam with a small slot machined into it's metal frame which slid slightly past its C of G and rested on a second
bolt? When no longer required, you rotated it off its supporting
bolt and allowed it to hang down below the beam where gravity kept it danglng out of harms way. The older Trouper in Westdale high school had the optional glass UV filter as described. I don't recall the newer Trouper in Sir John A. McDonald ever having the optional UV filter but I believe I recall borrowing the filter from Westdale for an
amateur production in Sir John A.
When Westdale was built, Lord only knows how many decades ago, ventilation for the
carbon arc's fumes was provided in the ceiling of the small projection booth.
By the time Sir John A opened in 1970, no additional ventilation was provided, the school board included an
incandescent Strand 1.5 K which was often lamped up to 2.0 Kw by a local
amateur musical group when ever they felt the need. The head of John A's English department insisted on having a
carbon arc spot and the school board purchased a brand new Trouper in approximately 1971 but neither ordered the optional UV filter NOR had any additional ventilation added.
I suppose that's not too surprising. A few years later, portions of John A. were sealed off and removed from service while
asbestos was removed from the entire school, the operation taking approximately six months during the school year while students and staff were in attendance. Some of the removal and refinishing work was accomplished overnight, I can recall lighting a three weekend
amateur run with paid patrons entering via a the
auditorium's entrance
lobby while the
lobby, and the corridor to the public washrooms, were draped in translucent poly-plastic sheets with, what else, cheap 'n cheerful, oh so economical, silver / grey
duct tape. Neither real metalized foil
duct tape nor real
gaffer's tape but smaller 2" wide economy rolls marketed with home handymen in mind.
Again, thanks for the memories.
Toodleoo!
Ron Hebbard.