[SEL] Speed limiter.....elevator governor.

[peter ogborne]

Jack and others...........I have an Otis elevator governor ,mounted on a
trolley and driven by a little J.A.P motor just for demo purposes. It has
bob weights and was designed to ''grip '' the fixed cable with a wedge when
it tripped as in free falling.

 Jack this little machine is out at Midland workshops for the moment until i
bring it down to Albany . It was originally installed in the old Goldsbrough
Mort building in St Georges Tce Perth .....Otis Elevator Co were very
helpful in giving me the history of the machine.
----- Original Message -----
From: "Steve Gray" <segray at mlode.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Monday, January 10, 2005 1:47 AM
Subject: Re: [SEL] Speed limiter


> G'day Jack and All-
>
>    Used to have one of those elevator brakes years ago. This is kind of
> along the same idea, but this device has no actual braking capability,
> it simply disconnects the output shaft from the input shaft when the
> speed gets too high, hence the "speed limiter" reference. There's
> nothing to slow anything down. This would kind of answer Leroy's
> response in that there's no braking involved. The only harm that I could
> envision from running it off an engine (or any power source), is to have
> the spring tension too high and allow the flyballs to spin too fast. Not
> my idea of fun! I think John hit the nail on the head using the term
> "Speed Governor". If the flyballs were hinged differently, it would be a
> true centrifugal clutch as we know it, engaging when the speed was high
> enough. This does just the opposite. Thanks John for the King books
> heads-up, I'll check those. Thanks too, Steve, for the picture. Sure
> looks like the same critter. Most of the sheet metal had been cut off of
> this one, so I was thinking of going back with large expanded metal to
> keep it safe, yet allow the goodies to be seen. Thanks Arnie, the more
> monkey motion, the better!
>
> - Steve
>
> --
> Steve Gray
> Member EDGE & TA, Br. 49 & 13
> Sonora, California USA
> e-mail:   segray at mlode.com
> Home page:   http://www.oldengineshed.com
>
>
>
> Jack Watson wrote:
>
> >
> > Could it have been a safety device - an over-speed brake for a lift
> > (elevator)?
> >
> > Jack in Oz
> >
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