Firstly because of Garry and his Mum. That is the second clock Ive fastened for them and I’m type of thanking them prematurely for his or her permission to publish some stuff on the repairs (ehem!).
I dont get as many carriage clocks in as I would love – they’re all the time superb to work on however they’re additionally dependable and taken care of by thier house owners so dont actually require a lot upkeep.
Carriage clocks are all about precision. The parts are seen by way of the glass so they’re designed to be lovely and stylish whereas sustaining that steampunk jules verne feeling. Awsome.
These are onerous clocks to repair. As a result of every part is usually smaller on a carriage clock (to cut back friction) its extremely simple to interrupt parts whereas eradicating or changing them. Numerous carriage clocks mechanics have extra to do with wristwatch design than mantle clock. Having mentioned this, quite like a wrist watch, as soon as the clock is again collectively is as strong as a rock. You’ll be able to shake it, flip it the other way up, and just about do something wanting enjoying soccer with it; it’s going to nonetheless run. Its a carriage clock in any case which implies is desgined to operate in transit or when positioned on and uneven floor.
Repairing or servicing a carriage clock ought to subsequently not be performed to the beat of a drum or a deadline. You’re taking your time and scent the roses a bit.
Todays job is an Irish mini carriage with an hour chime. Its by W Gibson of Belfast and dates from 1890 – 1899, most likely 1895 – 6. The rationale it may be precisely dated is that it has service marks on the bottom. These are on the inside base and should not seen with out eradicating a canopy plate.
Discovering service secreted away on clocks with initails is a wonderful means of relationship them. In case your at an public sale its a useful factor to know. Auctions homes make errors on a regular basis – even the great ones, and sometimes undervalue or incorrectly establish clocks.
You would possibly discover a number of service marks on the clock – mine has two. If there are a number of then the clock might be 3 – 10 years youthful than its first service date.
These marks are sometimes seen on the innner case of the clock so all the time take a look for these in case your enthusiastic about shopping for one. Notice that pawnbroker marks / dates are more likely to be a lot later than the clock was made. These will usually 4-8 digit alpha numeric. So, for those who see a six determine quantity subsequent to the intials then dont assume its a date – if the numbers dont make a date then its a pawnbrokers mark and the clock could also be a lot older than any accompanying “date”.
Garrys clock may be very most likely 1895-6 as a result of the service interval is 3 or 4 years based mostly on the dates inscribed i.e. 1899 first service and 1902 the second.
3 or 4 years would possibly look like a brief service interval in comparison with the 7-10 years we take into consideration at the moment, nevertheless, you must take note of that everybody smoked. Tobacco smoke is the one type of airborne particle that actually will get right into a clock and mixes with any oil to type a brown gunge. These items is like glue and accumulates within the spindle holes and cog tooth stopping the clock. Servicing recurrently is the one possibility in these circumstances.
I had to take a look at this clock for a superb hour earlier than I even tried to take away or diss-assemble it past the outer cage. The reported downside was inconsistend chiming. It will get to 10 after which simply cease chiming additional hours.
With the case eliminated it was attainable to see the sythe dropping after which jamming at 10. It was as if the tooth on the backside of the scythe have been completely different in some invsible means from these on the prime. I had a superb look with my manifying goggles and certainly there was extra / completely different put on on the decrease tooth than the underside.
On previous clocks this makes good sense. Every time the clock chimes it engages these tooth as much as say the fifth tooth for five o’clock and the sixth for six o’clock and so forth and soforth. This after all implies that the primary tooth is utilized in each chime on each hour. The second tooth for 11 chimes per 12 hours, however not after all 1 o’clock.
In essence, the upper the tooth on the scythe, the much less occasions it has been engaged within the clocks lifetime. The result’s variable put on which ends up in failure at tooth 10 when the distinction in put on is sufficient to intervene with the meshing of the lever that lifts it. This doesnt make precise sense since you would suppose the much less nicely worn tooth on the prime would have interaction usually, nevertheless, the pallet that pushes the tooth additionally suffers put on so its not egaging with the tooth in the best way it did when it was produced. Its worn itself a snug groove on the decrease tooth through the years so that every one matches properly, however in relation to the much less nicely worn tooth on the prime it begins to wrestle to easily have interaction them.
The answer was to regulate the entire sythes organising slightly to compensate. A little bit of 12oo grit moist and dry to each the lever and the topmost tooth of the scythe additionally removed any micro-burrs on the sting of the tooth. This had been inflicting a laboured cycle on every chime and simply didnt sound correct.
In about 10 years it’s going to want doing once more – Im virtually tempted to depart a notice in there for the subsequent clock restore individual to save lots of him an hour attempting to determine what the issue is!. Pehaps I’ll do that really because it could possibly be simply hidden in the identical place on the different two service marks to which I’ll after all add my very own.
The changes I made would have taken most likely an hour or so had I do know precisely what was mistaken. As a substitute it took 3 hours merely since you actually should watch out and take a look at issues very completely with finer clock actions. When your issues should not clearly seen, and a results of microscopic injury, its extremely necessary to be forensic in approaching issues. Contact as little as attainable within the diagnositics as a result of for those who discover the clock works hastily, and also you dont know why, then its going to go mistaken once more and youve wasted your time. Its subsequently 3 hours nicely spent. Heres the completed article which is able to now go on take a look at for twenty-four hours.