UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Other Vintage Household Electrical or Electromechanical Items

Notices

Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details.

Reply
 
Thread Tools
Old 10th Jan 2020, 3:16 pm   #1
Alistair D
Octode
 
Alistair D's Avatar
 
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 1,685
Default Westminster clock.

I am in the process of trying to get an old Westminster mantel clock going again.It does run but gains about 10 minutes in 12 hours.
Can anyone point me to to a set of instructions on how to set the pallet up properly, especially the height adjustment as I am finding that it is so critical. Also not sure whether the pallet should be horizontal when the pendulum is stopped. In the position it is in at the moment the clock does seem to be on beat.
So far, on the internet, I have not managed to find a site that goes into enough detail.

Al
Attached Thumbnails
Click image for larger version

Name:	DSCN0171.jpg
Views:	146
Size:	92.5 KB
ID:	196843   Click image for larger version

Name:	DSCN0172.jpg
Views:	129
Size:	106.2 KB
ID:	196844  
__________________
I won't tell you how I discovered that.
Alistair D is offline   Reply With Quote
Old 10th Jan 2020, 3:54 pm   #2
Nickthedentist
Dekatron
 
Nickthedentist's Avatar
 
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 14,568
Default Re: Westminster clock.

Hi Al,

I'm no expert, but...

AFAIK, the pallet cock (the adjustable bit on the back that supports the back end of the pallet arbor) should be square with respect to the plates (i.e. not slanted) and should be as low as possible without it causing the escape wheel to stall. A tiny drop of clock oil where the pallets meet the escape wheel teeth is advised. Best adjusted with no power in the spring, and the escape wheel rotated with light finger pressure, to prevent disaster.

Worry about the beat later. You can tilt the whole clock movement/case to get things in-beat for testing purposes.
Nickthedentist is online now   Reply With Quote
Old 10th Jan 2020, 4:24 pm   #3
Alistair D
Octode
 
Alistair D's Avatar
 
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 1,685
Default Re: Westminster clock.

I must have dislodged the pallet cock just before taking the picture. I normally set it so the top is parallel with backplate. My bad for not noticing.

I was not sure whether to oil the edges of the pallet so you have answered one question.

The crutch is adjustable at the back of the pallet arbour so setting the beat is easy. Initially it was seized and that was one of my first problems until I realised that the whole arbour was turning so the pallet was not moving wrt the pendulum.

Al
__________________
I won't tell you how I discovered that.
Alistair D is offline   Reply With Quote
Old 11th Jan 2020, 3:37 pm   #4
Rhgbristol
Triode
 
Join Date: Jan 2014
Location: Bristol, UK.
Posts: 43
Default Re: Westminster clock.

From my experiences, if the clock is running, not stalling, but just inaccurate timekeeping, it is usually the pendulum length that needs adjustment.

Longer for slower and shorter for faster. Simple trial and error over a few days corrected this on my Westminster clock.

If the beat is off, and you can sense more of a ‘Tock tick’ rather than ‘tick tock’ sound, try trial and error by altering the whole tilt of the clock case with small increments created by strips of cardboard or coins jacking up either the left or the right. When reaching an optimum position, you could extrapolate this relative position to true vertical, by carefully adjusting the pallet positioning.

Usually if the beat is badly off, the clock won’t even run for more than an hour or so at best.
Rhgbristol is offline   Reply With Quote
Old 21st Jan 2020, 8:30 pm   #5
PaulR
Nonode
 
PaulR's Avatar
 
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 2,058
Default Re: Westminster clock.

Regarding the depth, there are two extremes, one is so deep that the escape wheel does not clear the pallets and the other is not deep enough so that the wheel is not locked. Be very careful about the latter. If the escape wheel spins and catches the pallets, as Nick says the result is disaster!

I find that somewhere in between is quite satisfactory, particularly on a recoil escapement like yours. I haven't found it to be particularly critical and a little experimenting will make it run. Again,as Nick says, a tiny amount of clock oil on the pallets can be helpful but I have found this to be more so with a deadbeat escapement.

Regarding the beat, there isn't a "right" answer for the position of the pallets in relation to the plates. Some are designed to be at an angle and some not. You can initially set it up on the kitchen work surface or similar but the final adjustment should really be made in the place where it is to live and facing outwards. If the clock runs only for a short period and has been cleaned and oiled properly (and isn't too worn) the beat being out is the most likely cause.
__________________
Paul
PaulR is offline   Reply With Quote
Old 21st Jan 2020, 9:05 pm   #6
Nickthedentist
Dekatron
 
Nickthedentist's Avatar
 
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 14,568
Default Re: Westminster clock.

Yes, adjust the beat so that the tick and tock are even, as opposed to a galloping horse effect. As PR says, the angle of the pallets w.r.t. the plates isn't relevant.
Nickthedentist is online now   Reply With Quote
Old 22nd Jan 2020, 12:55 am   #7
Alistair D
Octode
 
Alistair D's Avatar
 
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 1,685
Default Re: Westminster clock.

Thanks for the info. Alas, due to some personal issues, the clock will have to go on the back burner for a bit.

Al
__________________
I won't tell you how I discovered that.
Alistair D is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 7:28 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Copyright ©2002 - 2020, Paul Stenning.