Revisions

-
Turns out those mainsprings create a ton of tension when wound. It's a serious effort to turn the center winder. Requires considerable effort as the spring tightens.

The winder knobs unscrewed themselves quite easily. Will need to revisit design and/or adjust somehow.



While the mainspring caddy (the leather bound section) held fast nicely, the braking/locking/grabbing section for the center winder rod (black handle) needs something that will clamp the rod much more tightly. This first run was a relatively small mainspring and when even halfway wound the brake would not hold against the enormous tension of the mainspring. Kept your correspondents hands quite engaged.


The caddy will also need longer bolts to accommodate future (larger) mainsprings.



Fun problems to solve!






Comments

Post a Comment

Popular posts from this blog

Toothsome

-
Image
In our last episode we discussed the roughly 100 year-old Sessions York banjo clock emblazoned with Betsy Ross on its glass tablet and an eagle sitting on top.  And while in very good shape overall it was ticking and tocking in an uneven manner, what clockmakers call a "beat" problem.... What is a beat problem? Being in beat mean the clock is ticking and tocking very evenly, eg. tick-tock-tick-tock. That is a healthy beat for a clock. A tick or tock of a clock is the sound made when an escape wheel tooth hits a pallet... well... look at the gif above. You can see the escape wheel with its pointy teeth turning and gently colliding with the pallets of the pallet fork (that bent strip of grey metal). There are two pallets, one curved on top (the entrance pallet) and a second flat one on the bottom (the exit pallet).  See each one hitting a tooth? That pallet fork, also called an anchor, is attached to a crutch (the brass rod that is bent and then descends down below the image)...
Read more

Those darn teeth

-
Image
As noted in earlier episodes, your (ever learning) local horologist will often effect repairs even in the early phases of the examination of a clock. Pleasingly more of these have become regular parts of basic maintenance.   Amongst the many efforts made by this lover of brass in the early phases of examination of Charlene's Ingraham regulator clock was the quick identification and gentle straightening of an errant escape wheel tooth, hopefully preventing  the problems that can result .  Subtle, yes, but that tooth is bent forward which can upset the beat of the clock. The awake... woke... er... reader might recall a similar issue with the Sessions York banjo clock .  While the condition was visually subtle YLH did spy that bent tooth right after disassembly of the movement and while evaluating each wheel.  YLH really enjoys no longer being a clock freshman.  However, the errant tooth was not the source of the double tick / noise that was vexing this hor...
Read more

How an "ordinary" repair... wasn't

-
Image
Charlene (name changed) called a couple weeks back.  "Chip [neighbor who runs Wittpenn Antiques] gave me your name and number. I have a 'Regulator' clock that I think might be 'overwound'. Anyway it stops running after a few minutes." A few days later your local horologist headed over to Carmel for a look. Charlene was gracious and appreciative that this clock jock made house calls. And there it was in situ. A large and fine old American clock. An Ingraham timepiece (which means time only, no strike or chime; see the single winding hole on the dial just left of center).  Charlene called it a Regulator, per the glass decal, and that is mostly correct as larger timepieces like this one were considered to be pretty accurate time keepers and commonly named as such. However the term Regulator ended up getting applied to a lot of types of clocks as more of a marketing gimmick.  Spitballing YLH guessed it was made somewhere between 1890 and 1915. A couple things also...
Read more