Date   

Re: Synchronome triangle movement

H Hal
 

these are the chaps I use for any spring steel "piano wire" for spring making etc....all diameters catered for


https://www.ebay.co.uk/sch/hucr31/m.html?item=384684081047&rt=nc&_trksid=p2047675.m3561.l2562


hal

uk


On 24/01/2022 10:18, Philip Green wrote:
Hi John and Howard,
Thank you for the help.
I have made a spring and the clock runs better than it's run before!
The only problem I have is that I think the spring is too strong as occasionally when the latch is released the count wheel moves round two teeth.
 I'll try a weaker spring.
Phil
  

On Mon, Jan 17, 2022 at 11:06 AM Philip Green via groups.io <phil.dagreen=gmail.com@groups.io> wrote:
Thank you again John. I have dug out some wire so I hope to have a go at the spring this afternoon.
Regards
Phil
 

On Sun, Jan 16, 2022 at 4:32 PM John Hubert <jfphubert@...> wrote:
The spring is a spiral wound (the full length of) the ‘axle’ on which the latch pivots.  The light is poor, so the photo is not very clear, but it is a torsion spiral would spring of numerous turns.  This photo shows the latch and spring from the side.  One ‘idea’ is that old VHS video cassettes used to have a similar (but shorter) torsion spring.


John

On 16 Jan 2022, at 16:19, Philip Green <phil.dagreen@...> wrote:

Thank you John,
That is the catch but I see no spring! I get the idea though.
Phil


On Sun, Jan 16, 2022 at 1:44 PM John Hubert <jfphubert@...> wrote:
Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached

<IMG_3070.jpeg>

John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil






Re: Synchronome triangle movement

Philip Green
 

Hi John and Howard,
Thank you for the help.
I have made a spring and the clock runs better than it's run before!
The only problem I have is that I think the spring is too strong as occasionally when the latch is released the count wheel moves round two teeth.
 I'll try a weaker spring.
Phil
  


On Mon, Jan 17, 2022 at 11:06 AM Philip Green via groups.io <phil.dagreen=gmail.com@groups.io> wrote:
Thank you again John. I have dug out some wire so I hope to have a go at the spring this afternoon.
Regards
Phil
 

On Sun, Jan 16, 2022 at 4:32 PM John Hubert <jfphubert@...> wrote:
The spring is a spiral wound (the full length of) the ‘axle’ on which the latch pivots.  The light is poor, so the photo is not very clear, but it is a torsion spiral would spring of numerous turns.  This photo shows the latch and spring from the side.  One ‘idea’ is that old VHS video cassettes used to have a similar (but shorter) torsion spring.


John

On 16 Jan 2022, at 16:19, Philip Green <phil.dagreen@...> wrote:

Thank you John,
That is the catch but I see no spring! I get the idea though.
Phil


On Sun, Jan 16, 2022 at 1:44 PM John Hubert <jfphubert@...> wrote:
Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached

<IMG_3070.jpeg>

John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil






Re: Synchronome triangle movement

Philip Green
 

Thank you again John. I have dug out some wire so I hope to have a go at the spring this afternoon.
Regards
Phil
 

On Sun, Jan 16, 2022 at 4:32 PM John Hubert <jfphubert@...> wrote:
The spring is a spiral wound (the full length of) the ‘axle’ on which the latch pivots.  The light is poor, so the photo is not very clear, but it is a torsion spiral would spring of numerous turns.  This photo shows the latch and spring from the side.  One ‘idea’ is that old VHS video cassettes used to have a similar (but shorter) torsion spring.


John

On 16 Jan 2022, at 16:19, Philip Green <phil.dagreen@...> wrote:

Thank you John,
That is the catch but I see no spring! I get the idea though.
Phil


On Sun, Jan 16, 2022 at 1:44 PM John Hubert <jfphubert@...> wrote:
Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached

<IMG_3070.jpeg>

John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil






Re: Synchronome triangle movement

John Hubert
 

The spring is a spiral wound (the full length of) the ‘axle’ on which the latch pivots.  The light is poor, so the photo is not very clear, but it is a torsion spiral would spring of numerous turns.  This photo shows the latch and spring from the side.  One ‘idea’ is that old VHS video cassettes used to have a similar (but shorter) torsion spring.


John

On 16 Jan 2022, at 16:19, Philip Green <phil.dagreen@...> wrote:

Thank you John,
That is the catch but I see no spring! I get the idea though.
Phil


On Sun, Jan 16, 2022 at 1:44 PM John Hubert <jfphubert@...> wrote:
Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached

<IMG_3070.jpeg>

John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil






Re: Synchronome triangle movement

Philip Green
 

Thank you John,
That is the catch but I see no spring! I get the idea though.
Phil


On Sun, Jan 16, 2022 at 1:44 PM John Hubert <jfphubert@...> wrote:
Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached


John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil



Re: Synchronome triangle movement

John Hubert
 

Hi Phil,

I believe a spring is ’normal’.  My clock (Fig 4/6 in Bob’s book I believe) has a spring.  This is a long spiral spring would round the latch pivot. Image attached


John

On 15 Jan 2022, at 16:43, Philip Green <phil.dagreen@...> wrote:

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil



Synchronome triangle movement

Philip Green
 

Hello,
 
I have at last got round to getting my Synchronome running again and as usual have had trouble with double pulsing!! Behaving itself when I left it! Reading Bob Miles' book (2021 edition) I noticed that the picture on page 80 fig 4/7 shows the latch with a wire/spring? attached to it. My clock doesn't have this spring but it does have the hole that it could go through. The picture of the similar clock on "Clockdoc" doesn't have the spring. 
I can see that this spring could return the latch quicker and more positively, thus reducing the chances of double pulsing, but was it ever fitted as standard? If it was does anyone have an idea of design? 
Thank you in anticipation
Phil


Re: The phoenix from the ashes

ffolliott
 

Excellent result and even better that it is a G&J!....always interesting to see good repairs ... expect like many we have all been there at some point or other and what can can be restored from a selection of 'bits'. Always interested to hear restore tips on both movements and case restore methods ... best glues ... best fillers...best varnish & polish 'blend ins' ... making and sourcing parts/spares and the endless list of good repair products etc. etc....


Well done

Geoff




------ Original Message ------
From: "Simon Taylor" <smktaylor1@...>
To: synchronome1@groups.io
Sent: Sunday, 9 Jan, 22 At 10:30
Subject: [synchronomeelectricclock] The phoenix from the ashes

Hi New Topic all,
you may remember from a while back, my post about the totally smashed master clock?

Here is a happy update!

It arrived like this...
















It spent two weeks being worked on...



Then finally, it went up on the wall along with a GMT 35 and a few clocks to play with...















It lives again, an early Gillett & Johnston clock 36 from 1932. A stunning addition to my clock system.



Simon GPO Clocks

http://www.lightstraw.uk/gpo/clocksystems/index.html


The phoenix from the ashes

Simon Taylor
 

Hi New Topic all,
you may remember from a while back, my post about the totally smashed master clock?

Here is a happy update!

It arrived like this...
















It spent two weeks being worked on...



Then finally, it went up on the wall along with a GMT 35 and a few clocks to play with...















It lives again, an early Gillett & Johnston clock 36 from 1932. A stunning addition to my clock system.



Simon GPO Clocks

http://www.lightstraw.uk/gpo/clocksystems/index.html


Re: Reinventing a Synchronome

John Haine
 

Looking back at this thread I see I last posted about 18 months ago!  Since then the clock has been quietly running in our kitchen with very occasional adjustments to the hands but basically has become "the kitchen clock".  It only stopped once when we had a power outage that was too long for the battery. 

In the end I gave up on monitoring its stability more closely, one reason being that the Raspberry Pi couldn't be relied on not to either crash or fall off the Wi-Fi for more than a month or two.  Also the records that i do have indicate that the pendulum is quite "noisy" which is I think because, having a very light CF rod, it has a mode of oscillation excited by the impulse which make short term time measurements somewhat uncertain.  

Some concern was voiced here about the long-term reliability of use of stepper motors for impulsing and driving the dial.  Well the clock has been running for nearly 2 years, and has been impulsing once a minute, so the stepper resetting the gravity arm has made getting on for a million down/up cycles, each profiles by a set of pulses generated by the Arduino, without any apparent accumulated error or lost steps. There is a "home" sensor on the cam it drives, which is used on start-up to set its position, and I had a notional plan to occasionally re-home it between impulses but I've never had to implement that.  The stepper driving the dial has advanced 9 indicated seconds of the minute hand nearly 7 million times, again without any missed steps.  But I'm not at all surprised by this as the steppers on my CNC lathe and mill have done countless more steps without any errors (except when I have once or twice run into an end stop!).


Re: Correctly hanging a GPO type 36

Simon Taylor
 

youtube did something useful? YAY!

I must make the updated vid soon, stand is easier to use when external circuit connected. AND… I have now moved the connector behind the clock No. 6 to the correct position!


Simon


On 18 Dec 2021, at 18:28pm, Ian Richardson via groups.io <irichar361@...> wrote:

Regarding using the pendulum for case alignment - it is not infallible.  Imagine if you will the top chops of the suspension being pushed to one side; if you align the tip of the pendulum with its fixed point, the case would be on a tilt!

Gents put a small brass screw in the centre of both the top and bottom of the case, and instruct you to hold a plumb line to align with both.  When the case is fixed vertically, THEN you may use the pendulum to set the left-right alignment etc in the knowledge the case is vertical. 

Just a thought,

Ian R



-----Original Message-----
From: Ian Satterthwaite <satterthwaite.ian@...>
To: synchronome1@groups.io
Sent: Sat, 18 Dec 2021 15:29
Subject: Re: [synchronomeelectricclock] Correctly hanging a GPO type 36

Thanks for that interesting film,
curious you used a separate plumb line, as I have always used the pendulum for alignment,
i never saw a block under a master clock, in the installations on my district, it is a good idea though,
GMT 35 is the relay set i have on my system, as it is ex sorting office & public office, not part of an exchange site,
your system continues to grow i see, four GMT 34 relay sets, impressive, I really should get my other master clocks systems up and running somewhere.


--
Simon GPO Clocks

http://www.lightstraw.uk/gpo/clocksystems/index.html


Re: Correctly hanging a GPO type 36

Ian Satterthwaite
 

the you tube algorithm also suggested the film of your maintenance stand, definately something for me to build when time permits, as I have a couple of slaves that need attention


Re: Correctly hanging a GPO type 36

Simon Taylor
 

Glad it was interesting, I thought I should make a film as there are no other guides concerning hanging them.


--
Simon GPO Clocks

http://www.lightstraw.uk/gpo/clocksystems/index.html


Re: Correctly hanging a GPO type 36

Ian Richardson
 

Regarding using the pendulum for case alignment - it is not infallible.  Imagine if you will the top chops of the suspension being pushed to one side; if you align the tip of the pendulum with its fixed point, the case would be on a tilt!

Gents put a small brass screw in the centre of both the top and bottom of the case, and instruct you to hold a plumb line to align with both.  When the case is fixed vertically, THEN you may use the pendulum to set the left-right alignment etc in the knowledge the case is vertical. 

Just a thought,

Ian R



-----Original Message-----
From: Ian Satterthwaite <satterthwaite.ian@...>
To: synchronome1@groups.io
Sent: Sat, 18 Dec 2021 15:29
Subject: Re: [synchronomeelectricclock] Correctly hanging a GPO type 36

Thanks for that interesting film,
curious you used a separate plumb line, as I have always used the pendulum for alignment,
i never saw a block under a master clock, in the installations on my district, it is a good idea though,
GMT 35 is the relay set i have on my system, as it is ex sorting office & public office, not part of an exchange site,
your system continues to grow i see, four GMT 34 relay sets, impressive, I really should get my other master clocks systems up and running somewhere.


Re: Correctly hanging a GPO type 36

Ian Satterthwaite
 

Thanks for that interesting film,
curious you used a separate plumb line, as I have always used the pendulum for alignment,
i never saw a block under a master clock, in the installations on my district, it is a good idea though,
GMT 35 is the relay set i have on my system, as it is ex sorting office & public office, not part of an exchange site,
your system continues to grow i see, four GMT 34 relay sets, impressive, I really should get my other master clocks systems up and running somewhere.


Correctly hanging a GPO type 36

Simon Taylor
 

Includes the often missed lower support bracket.

https://youtu.be/zcNGFxV28fM
--
Simon GPO Clocks

http://www.lightstraw.uk/gpo/clocksystems/index.html


Re: auction, 6 Synchronome clocks

Darren Conway
 

Hi

The prices high and the bids are zero.  The difference between asking price and market value.

I think it is good to post ads like this on this type of forum.  There is no way I would have found these clocks any other way, and in this case, no way I will be bidding.


Regards

Darren Conway
Lower Hutt
New Zealand
ph +64  (0)4 569 1963

On 10.12.21 6:57 am, john robinson wrote:
Howdy,
I just  got an email concerning this auction house with 6 Synchronome clocks on the block Jan 7 2022. Definitely out of my league pricewise...

www.invaluable.com/   search Synchronome

One of them caught my eye and is listed: Lot 6,  A UNIQUE SYNCHRONOME ELECTRIC ASTRONOMICAL REGULATOR MASTER CLOCK the mahogany Type B case having a moulded pediment and glazed door with leaf carved corner panels enclosing a 10" silvered astronomical dial signed Camerer Cuss & Co. with the counter signature Synchronome Electric London in the subdials fronting an electric movement NRA No.1164 with early large brass seconds unit, numbered Invar pendulum and original Synchronome boxed timing weights and mahogany block beat scale.

If posting this ad is contrary to the Synchronome group rules, please post a "go away" to me and I won't do it again....

Virus-free. www.avast.com


Re: auction, 6 Synchronome clocks

Brian Cracknell
 

Crikey, that was a nice collection somebody had!

Very interesting John, thanks for posting that.

Regards
Brian


From: synchronome1@groups.io <synchronome1@groups.io> on behalf of john robinson <johnrobinson457@...>
Sent: 09 December 2021 17:57
To: synchronome1@groups.io <synchronome1@groups.io>
Subject: [synchronomeelectricclock] auction, 6 Synchronome clocks
 
Howdy,
I just  got an email concerning this auction house with 6 Synchronome clocks on the block Jan 7 2022. Definitely out of my league pricewise...

www.invaluable.com/   search Synchronome

One of them caught my eye and is listed: Lot 6,  A UNIQUE SYNCHRONOME ELECTRIC ASTRONOMICAL REGULATOR MASTER CLOCK the mahogany Type B case having a moulded pediment and glazed door with leaf carved corner panels enclosing a 10" silvered astronomical dial signed Camerer Cuss & Co. with the counter signature Synchronome Electric London in the subdials fronting an electric movement NRA No.1164 with early large brass seconds unit, numbered Invar pendulum and original Synchronome boxed timing weights and mahogany block beat scale.

If posting this ad is contrary to the Synchronome group rules, please post a "go away" to me and I won't do it again....


auction, 6 Synchronome clocks

john robinson
 

Howdy,
I just  got an email concerning this auction house with 6 Synchronome clocks on the block Jan 7 2022. Definitely out of my league pricewise...

www.invaluable.com/   search Synchronome

One of them caught my eye and is listed: Lot 6,  A UNIQUE SYNCHRONOME ELECTRIC ASTRONOMICAL REGULATOR MASTER CLOCK the mahogany Type B case having a moulded pediment and glazed door with leaf carved corner panels enclosing a 10" silvered astronomical dial signed Camerer Cuss & Co. with the counter signature Synchronome Electric London in the subdials fronting an electric movement NRA No.1164 with early large brass seconds unit, numbered Invar pendulum and original Synchronome boxed timing weights and mahogany block beat scale.

If posting this ad is contrary to the Synchronome group rules, please post a "go away" to me and I won't do it again....


Re: INDUCTA MASTER CLOCK

Jason Swift
 

Hi Bart,

That is perfect thank you so much!  Mine is now starting to look the same; the only difference I can see is that your collar has a slight raised bit and mine does not.

It's ran a full 24 hours with no dramas wahoo!

Best regards 

Jason

1 - 20 of 1442