[Milsurplus] Arc Lamps for projector sets

[C.Whitaker]

Yes, Simplex Projectors.
Had big square film containers.
Color was Blue.
My High School days in mountainous KY.
Two coated carbon rods at the primary
focus point.  Adjusted from outside via
a little crank and a current meter.
Later versions had an automatic adjust
mechanism.  Positive rod burnt faster.
All I ever saw was DC.  Ignatrons (?).
Tnx fer the memory.
73  Clete
++++++++++++++++++++++++++++++++


On 4/30/2012 11:09 AM, Sheldon Daitch wrote:
> Way back, when I was still in high school, I worked in
> a theater which used carbon arc lamps but we had
> a motor generator which provided the DC for the arc lamps.
>
> I am almost positive the lamps were made by Peerless and
> very similar to:
>
> http://www.flickr.com/photos/combatcamera44/6103931423/in/photostream/
>
> 73
> Sheldon
>
> On 4/30/2012 5:57 PM, Richard Solomon wrote:
>> Most of the Movie Theatres in Downtown Boston used DC for the Arc Supply on
>> their projectors. Copper coated Carbon rods were used.
>>
>> BTW, anyone remember the War Surplus store next to the old Radio Shack on
>> Washington Street ? Just outside Scollay Square.
>>
>> 73, Dick, W1KSZ
>>
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