Need a drawing for a Thornton Pickard roller blind shutter

[Richard Årlin]

Building a Sinar lensboard-sized Thornton Pickard roller blind shutter for a 400 mm f/4 barrel lens. Anyone in the forum willing to share a drawing of the mechanics and construction ? I wouldn't want to re-invent it obviously.

Thanks, Richard

[Ole Tjugen]

So what about retro-engineering one?

I have a really bad one - rusted stuck it the least of the problems - which I got with a bunch of other stuff. Want it to play around with?

[Richard Årlin]

Sounds like a nice offer. I'm quite handy as a woodworker etc. The lens is without an iris (it comes with holed plates like an Imagon) so I'm particularly interested in how the springtension is changed to be able to vary the speed a bit. I also think I'll make a slot for ND gels. I live in Sweden... would you let me borrow it for a while to figure it out maybe... Cheers, Richard

[Ole Tjugen]

No problem Richard. Send me your address and I'll drop it in the mail tomorrow!

[Richard Årlin]

Sent to your mailbox, very nice of you, "Mange Takk"

[BrianShaw]

Richard,

PM me an email address and I'll send you PDFs of Thornton Pickard shutter patents, with drawings.

Brian

[Richard Årlin]

Gee folks, thanks a lot

Richard

[scrichton]

I've just aquired one. So any drawings people could pass me too would be great. I think I'll be in the same boat as richard for making a homebrew monster sized one for a big fast lens.

Steven

[Asher Kelman]

[QUOTE=scrichton;236509]I've just aquired one. So any drawings people could pass me too would be great. I think I'll be in the same boat as richard for making a homebrew monster sized one for a big fast lens.

So did drawing appear?

I am trying to rebuild one shutter.

Asher

[Bob Jones]

I ran across this awhile back. No drawings, but lots of photos and some good info.

http://members.optusnet.com.au/~paulewins/resources/tp_shutter.htm