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Author Topic: Help identifying Century model
Robert Throop
Master Film Handler

Posts: 412
From: Vernon, NY USA
Registered: Jun 99


 - posted 04-05-2007 08:40 AM      Profile for Robert Throop   Email Robert Throop   Send New Private Message       Edit/Delete Post 
The early Cinemiracle installations used mirrors on the outboard machines to get a more precise panel alignment. if you look at pictures of some of the later jobs there was no mirror. I think that when Century introduced the lateral lens adjustment it accomplished the same thing.
Bob

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Richard Fowler
Film God

Posts: 2392
From: Ft. Lauderdale, FL, USA
Registered: Jun 2001


 - posted 04-05-2007 09:57 AM      Profile for Richard Fowler   Email Richard Fowler   Send New Private Message       Edit/Delete Post 
I remember seeing "Windjammer" in Cinemiracle and it virually seamless compared to Cinerama.......only occaisional arc light flutter between panels during this presentation I saw in the early 1960's. [Cool]

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 04-05-2007 10:02 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Robert is correct on that. The original Cinemiracle mirrors used micrometer adjusters on them to precisely align the edge of the mirror properly, later installations used the movable lens mount. Another interesting feature of Cinemiracle was a fall off on the joining edges of the photographed camera negatives that was caused by falloff of the mirrors in the camera. This fall off or vignetting eliminated the need for the gigilos in the projectors.

As for the Cinerama intermittents... With any multi panel process any film movement in the projector was an annoyance in the projected image so all kinds of devices were used to attempt to control it. The movements I've had over the years all had a flange on the outboard side of the intermittent sprocket that was a machined in part of the sprocket. Opposite that was the disc and spring that you taked about. This system acted just like the lateral guide roller at the top of the gate except it was part of the intermittent. If this still doesn't make sense I can draw a picture.....

Mark

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Richard Hamilton
Phenomenal Film Handler

Posts: 1341
From: Evansville, Indiana
Registered: Jan 2000


 - posted 04-05-2007 10:51 AM      Profile for Richard Hamilton   Email Richard Hamilton   Send New Private Message       Edit/Delete Post 
quote: Mark Gulbrandsen
I can draw a picture
your an arteest also??? [Big Grin]

Rick

sorry, I'm in my smartass mood today

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 04-05-2007 11:22 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Definately not an arteest.... I can draw stick people pretty good though.... I'd do it on Autocad so it would be legible.

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Cary Loeser
Film Handler

Posts: 9
From: Evergreen, Colorado, USA
Registered: Dec 2004


 - posted 04-07-2007 06:59 PM      Profile for Cary Loeser   Email Cary Loeser   Send New Private Message       Edit/Delete Post 
Mark,

Thanks for the additional explanation. No drawings are required. Just want to verify that the "flange" side of the sprocket was, in fact, on the outboard side and the disc and spring were on the inboard side; is that correct? Also, sometimes Cinerama put shim washers next to the spring. Do you know any specifics about that?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 04-08-2007 09:15 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Yes, thats correct. I too would use a thin hardened washer so that the spring is not turning on the end of the star bushing itself.

Mark

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