Why this tab?

wow

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I’m working on this very old Waterbury cottage clock and noticed that one wheel has a tab on it and only that one. Strange. Anybody want to venture a guess?

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shutterbug

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I think they wanted to see if it would eventually show up on the internet :)
 

wow

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I think they wanted to see if it would eventually show up on the internet :)
LOL.
I just noticed that it is staked differently from the rest of the wheels. Maybe made by someone later? But... it’s a motion works wheel. No stress on it. Why replace it?
Why do I let it bother me:???:?

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bruce linde

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my first thought when i saw it was that it would give them the option to install a perpendicular pin to trigger... something?
 

bruce linde

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i'm confused by your terminology... i think of 'motion works' as gears in front of the front plate, with a gear mounted on the minute hand arbor that drives an intermediate gear that drives the hour hand.

i see that the gear in question has an arbor (which motion works don't), but perhaps they used an altered version of the movement in another clock that did want to trigger something on a regular basis. how long does it take for that particular gear to turn 360 degrees when running?
 

Willie X

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My guess would be that the same wheel was used in the strike train of another model movement. They would probably never stamp two different parts if the only difference was a little tab. Willie X
 
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wow

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i'm confused by your terminology... i think of 'motion works' as gears in front of the front plate, with a gear mounted on the minute hand arbor that drives an intermediate gear that drives the hour hand.

i see that the gear in question has an arbor (which motion works don't), but perhaps they used an altered version of the movement in another clock that did want to trigger something on a regular basis. how long does it take for that particular gear to turn 360 degrees when running?
Bruce, I may be wrong calling it motion works. It’s an old Waterbury with a count wheel so there are no wheels on the front of the main arbor like rack and snail movements. It’s the arbor that is driven by the main arbor and turns when setting the clock and the clutch slips. What do I call it?
 

shutterbug

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Minute wheel.
 

bruce linde

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i'm so used to banjo clock and weight-driven regulators that have the motion works on the front of the movement i forget that not all clocks do! :)
 

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