Re: Aristo cold head


"Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote in message
news:TvSdnUOTMvKio63VnZ2dnUVZ_jednZ2d@xxxxxxxxxxxxxxxx

"john" <x@xxxxx> wrote in message
Does your Saltzman have one or two support rods for the bellows?

It has two, Richard, with the worm-drive rod between them, driven by a
sintered bronze gear. I can make pictures to put online if you wish.

John

You have the more elabrorate version of the enlarger. The cheaper (but
not cheap) one had the single support rod. This type was also used for
aerial mapping and similar applicatons. It should have a focusing wheel to
drive the bellows. Some of the larger models also had a small handwheel to
operate the stop ring on the lens.

This one has two hand-wheels below the baseboard. One raises and lowers the
head assembly using two chains that run up and down the inside of the main
column, and the other wheel moves the bellows (focus). It has another pair
of smaller hand-wheels on the horizontal supports (of the triangulated head
support) to move the head to and fro. Today I am measuring those parts to
see if I can add a belt or lightweight chain drive from one of the smaller
wheels to drive the other: this would allow the operator to move to-fro
using one wheel and obviate having the enlarger sit 30 inches from the wall.
(Or a person could just disengage the worm-screw and push/pull by hand.)

I would very much like to work out a remove F-stop control. Will think about
it.

There are mounts for other things such as the red filter rod which are empty
right now. And an odd part that I cannot figure out. If I can get a digital
snapshooter I will make some pictures and post the address.


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