Grant already gave you the way to do it, but I thought I would add a couple
of comments. You should make it out of very thin spring steel, such as you
can get out of a hacksaw blade with the teeth ground off. If you make a
spring with two to three full revolutions in it, the spring will be plenty
"wiggly" enough to ring the bell. If you want to make the spring shorter and
stiffer, you can set it up to bump over a little projection of steel
attached to the top of the door frame.
***My e-mail is "PureMail" protected. To reply, please copy and paste***
***the following authorization stamp in the "Subject" line of your reply.***
I've seen similar but instead of the door striking the bell, the bell is
mounted on the wall (from an upside down L bracket) and the top edge of the
door hits an extension on the striker - that swings back and forth so you get
2 to 4 rings per hit. I guess it would depend on how big the bell is as to the
best way to do it.
Bill H. Member VRWC
[my "reply to" address is real]
I've seen a setup in an old movie, it looked like a big watch spring
and it was hung high over the door so that when it opened it would
flick the bell.
I was out the other day, saw one crafted from an old oxygen cylinder,
it was cut about 10 inches from the end, the end being the bottom,
cylinder is hung upside down. May find an old tank at the junk yard.
Make sure it is an Oxygen or Nitrogen cylinder (hollow), Acetylene
cylinders are full of asbestos/activated charcoal and acetone. These
cylinders are drawn from a single plug of steel and are really tough,
hook the clacker to a spring and a string to flick when the door is
open, they really sound cool, the one I saw looked like a 122 cu ft
cylinder. It was the steel type, not the medical type made from
Aluminum (lighter for the nurses) had a great tone.
MAKE SURE IT IS MT first...
On Sun, 16 Nov 2003 16:56:05 GMT, "Dante Mincin"
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.