[pure-silver] Re: Packard shutters?
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 12 Feb 2005 14:35:47 -0800
----- Original Message -----
From: "Nick Zentena" <zentena@xxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Saturday, February 12, 2005 7:40 AM
Subject: [pure-silver] Packard shutters?
>
> So I did the usual stupid thing and bought a bigger
> camera. The 8x10 I bought
> came with what I guess is a Packard shutter. It seems to
> have flash sync
> wires so my second guess is it's a #6. But you know I've
> got questions. The
> part of the shutter that goes behind the lensboard is
> complete but it looks
> like all the fittings on the front side got cut off. What
> can I use for the
> missing hose? How about the wires? Other then squeezing
> the bulb are there
> any other instructions?
>
> Nick
>
Packard shutters and parts are still manufactured. See
http://www.hubphoto.com click on Packard shutters at the
bottom of the home page.
Bulbs are hard to find. You may be able to find a
replacement bulb for a blood pressure tester locally from a
medical supply house. Remove the valves. Hub Photo sells
them, as well as hose and fittings. They are a bit pricy but
perhaps its worth it to eliminate the bother of trying to
find one from another source.
Hose adaptors are available from places like Tri-S
Sciences, in Burbank, Ca, they are cheap.
Fuel or vacuum hose from an auto parts house is probably
the cheapest way to get hose.
Hub sells the hose fitting to go through the lens board.
I've used just a section of small pipe. You can get suitable
tubing from hobby supply stores. If you have the means to
bulge the end of the tube it can also be used as a hose
coupling to the bulb. A short section of hose is needed
inside the lens board to reach the shutter.
The wire for the flash can be anything, it doesn't have to
carry any current. It would be ideal if you could adapt an
adaptor cord with a PC fitting on one end. The old system
was to use a male household plug on a short lead.
Packard shutters with both I and B settings should have a
pin on a knob sticking out the front of the lens board.
Sometimes these are missing. The pin assembly with a bezzle
is available from Hub Photo. You an makeshift this with a
nail the right size.
When in T/B (pin out) the shutter is opened by squeezing
on the bulb while blocking the opening on the top of the
bulb. Its closed again by sucking out the air. When use for
instantaneous exposures its tripped by squeezing the bulb
and reset by sucking the air out again.
It takes some practice but its possible to get quite
consistent exposure times. Maximum speed depends on the size
of the shutter. Its around 1/25th for the smallest and about
1/15th for the largest. Long ago pressure regulators were
available to control the speed independantly of the strength
of the operator but I have never seen one at any of the
local camera shows. A simple valve is not sufficient as a
regulator. Packard shutters actually work very well. At one
time they were plentiful and cheap on the used market. Now
they have become hard to find. A new one is rather expensive
but still much cheaper than having a barrel lens mounted in
a new shutter.
Another feature is that they are almost silent.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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