Query: Specialized old clock

So, guys n gals... in both "It's a Wonderful Life" and in a Twilight
Zone episode I saw a clock that had two dials on the face. The regular
12 hour dial and surrounding that was a dial with 32 divisions.
Having a hard time actually finding much out about them.

<http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_clock_
32_divisions.jpg/file>

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

 

Michael Kellett <mk@mkesc.co.uk> wrote in
news:VomdnZ_xKdq3xhnDnZ2dnUU78aXNnZ2d@giganews.com:

On 01/04/2020 09:31, DecadentLinuxUserNumeroUno@decadence.org
wrote:
So, guys n gals... in both "It's a Wonderful Life" and in a
Twilight Zone episode I saw a clock that had two dials on the
face. The regular 12 hour dial and surrounding that was a dial
with 32 divisions. Having a hard time actually finding much out
about them.

http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_c
lock_ 32_divisions.jpg/file

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

Day of the month,

https://www.clockparts.com/31-day-movement-dials/

MK

Interesting. The dial I mentioned has 31 divisions. But it starts
with 1 at the 12:00 position, so I was fooled into thinking it was 32.

But yours starts with the one just after TDC (12:00) and with 31 at
TDC.

Without an additional hand, however, I do not see it telling us the
day anywhere.

 

[Michael Kellett]

On 01/04/2020 09:31, DecadentLinuxUserNumeroUno@decadence.org wrote:

So, guys n gals... in both "It's a Wonderful Life" and in a Twilight
Zone episode I saw a clock that had two dials on the face. The regular
12 hour dial and surrounding that was a dial with 32 divisions.
Having a hard time actually finding much out about them.

http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_clock_
32_divisions.jpg/file

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

Day of the month,

https://www.clockparts.com/31-day-movement-dials/

MK

 

[Rick C]

On Wednesday, April 1, 2020 at 5:13:18 AM UTC-4, Michael Kellett wrote:

On 01/04/2020 09:31, DecadentLinuxUserNumeroUno@decadence.org wrote:
So, guys n gals... in both "It's a Wonderful Life" and in a Twilight
Zone episode I saw a clock that had two dials on the face. The regular
12 hour dial and surrounding that was a dial with 32 divisions.
Having a hard time actually finding much out about them.

http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_clock_
32_divisions.jpg/file

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

Day of the month,

https://www.clockparts.com/31-day-movement-dials/

MK

Only trouble is you have to manually set it to the 1st on 5 months of the year. Still, pretty fancy for a clockwork type clock. I guess they had those on watches too, but needed lens to magnify the date so you could actually read it. I remember the watches, but I don't think I've ever seen one of the date clocks.

I have seen a wooden clock a friend had. He gave it away when he move to a retirement community. Not that he doesn't have room, but I guess it was a mantle piece (not a small one either) and would stop running in the moist half the year. Too much bother. Interesting piece though.

--

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

 

[Clifford Heath]

On 1/4/20 11:07 pm, Clifford Heath wrote:

On 1/4/20 7:31 pm, DecadentLinuxUserNumeroUno@decadence.org wrote:
So, guys n gals...  in both "It's a Wonderful Life" and in a Twilight
Zone episode I saw a clock that had two dials on the face.  The regular
12 hour dial and surrounding that was a dial with 32 divisions.
Having a hard time actually finding much out about them.

http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_clock_
32_divisions.jpg/file

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

I'm not a "time brain" but my uncle is a retired master clockmaker, and
we discussed this type of clock just recently. I bought one to do some
dis/assembly practice before working again on the family Brocot (exposed
escapement) clock that was given to my grand-father's grandfather around
1870. We serviced it together this XMas just past, but that will be the
last time he does it, I expect. Anyhow...

Most clocks have the mainspring barrel drive an "8 day wheel" which
drives the hour hand wheel. The hour wheel gets divided down by 60 (two
more wheels) to the minute hand, then again by 60 (two more wheels) to
drive the escapement wheel,

Ugh, correction, the escapement wheel turns once each minute, not
second. Not so many wheels. I may have made other mistakes too, I'm
still learning this stuff.

the rotation of which is regulated by the

pendulum, and in that action it produces the sustaining impulse for the
pendulum.

The 31 day movement is a Korean invention. They used an extra long
mainspring, and added an extra wheel before the hour wheel, to increase
the run time. Longer main-spring means more stored energy, so there's
enough energy to keep the pendulum running for longer.

They are usually fitted with quite a light pendulum, so don't keep
terribly good time. It's possible to use a much heavier pendulum (up to
3 times heavier) and the timekeeping accuracy is greatly improved.

Anyhow, there are lots of them about:
https://www.google.com/search?q=%2231+Day+clock%22&tbm=isch

Clifford Heath.

 

[Clifford Heath]

On 1/4/20 7:31 pm, DecadentLinuxUserNumeroUno@decadence.org wrote:

So, guys n gals... in both "It's a Wonderful Life" and in a Twilight
Zone episode I saw a clock that had two dials on the face. The regular
12 hour dial and surrounding that was a dial with 32 divisions.
Having a hard time actually finding much out about them.

http://www.mediafire.com/file/gemb8pkfeo0s9px/ItsAWonderfulLife_clock_
32_divisions.jpg/file

Anybody know who divided a half a day up like this?

64 'hours' in one day?

Where are the time brains here?

I'm not a "time brain" but my uncle is a retired master clockmaker, and
we discussed this type of clock just recently. I bought one to do some
dis/assembly practice before working again on the family Brocot (exposed
escapement) clock that was given to my grand-father's grandfather around
1870. We serviced it together this XMas just past, but that will be the
last time he does it, I expect. Anyhow...

Most clocks have the mainspring barrel drive an "8 day wheel" which
drives the hour hand wheel. The hour wheel gets divided down by 60 (two
more wheels) to the minute hand, then again by 60 (two more wheels) to
drive the escapement wheel, the rotation of which is regulated by the
pendulum, and in that action it produces the sustaining impulse for the
pendulum.

The 31 day movement is a Korean invention. They used an extra long
mainspring, and added an extra wheel before the hour wheel, to increase
the run time. Longer main-spring means more stored energy, so there's
enough energy to keep the pendulum running for longer.

They are usually fitted with quite a light pendulum, so don't keep
terribly good time. It's possible to use a much heavier pendulum (up to
3 times heavier) and the timekeeping accuracy is greatly improved.

Anyhow, there are lots of them about:
<https://www.google.com/search?q=%2231+Day+clock%22&tbm=isch>

Clifford Heath.

 

[Jeff Liebermann]

On Wed, 1 Apr 2020 23:07:53 +1100, Clifford Heath <no.spam@please.net>
wrote:

>The 31 day movement is a Korean invention.

Thanks for the info. I blundered across an Arduino version of the
calendar clock which adds a few features (atomic clock sync, month,
tides, chimes):
<http://www.brettoliver.org.uk/Calendar_Clock/Calendar_Clock.htm>
For the Time Nut who has everything. More such clocks:
<http://www.brettoliver.org.uk>


--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

[Jeroen Belleman]

On 2020-04-01 19:08, Jeff Liebermann wrote:

For the Time Nut who has everything. More such clocks:
http://www.brettoliver.org.uk

What a horrible site. Nothing will keep still.

Jeroen Belleman

 

[Jeff Liebermann]

On Wed, 01 Apr 2020 19:38:38 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:

On 2020-04-01 19:08, Jeff Liebermann wrote:
[...]
For the Time Nut who has everything. More such clocks:
http://www.brettoliver.org.uk

What a horrible site. Nothing will keep still.
Jeroen Belleman

"Time is nature's way to keep everything from happening all at once."
<https://en.wikiquote.org/wiki/John_Archibald_Wheeler#Misattributed>
Be thankful that time continues to move (albeit in a circular manner).
Were time ever to stop moving forward, everything would collapse to
zero length and move at the speed of light.
<https://www.quora.com/Why-does-time-stop-at-the-speed-of-light>

I just burned an hour looking at the various Arduino clock
implementations. I smell yet another "fun" project coming.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

Jeff Liebermann <jeffl@cruzio.com> wrote in
news:rgg98fp05t8d2dtgn7bge2gfkiqgkq8god@4ax.com:

On Wed, 1 Apr 2020 23:07:53 +1100, Clifford Heath
no.spam@please.net> wrote:

The 31 day movement is a Korean invention.

Thanks for the info. I blundered across an Arduino version of the
calendar clock which adds a few features (atomic clock sync,
month, tides, chimes):
http://www.brettoliver.org.uk/Calendar_Clock/Calendar_Clock.htm
For the Time Nut who has everything. More such clocks:
http://www.brettoliver.org.uk

Remember the watches with little bubble magnifiers for the
scrolling 31 position day indicator?

We had to set those forward a day on 30 day months and for February
by hand too. Then they eventually had some that "know" what month it
is and do it themselves.

 

Jeff Liebermann <jeffl@cruzio.com> wrote in
news:jkn98f58mv6v19e1vo7fmti4uo5nfj6bbr@4ax.com:

> "Time is nature's way to keep everything from happening all at once."

One of my favorite quotes. Entropy is a bitch.

I had a little 1.5 inch gold button with blue writing on it of that
quote.

If someone bitched at me about how fast I was working I would pull it
out of my tools and put it on.