How to adjust friction fit trip lever

Douglas Ballard

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Dec 2, 2011
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The eight day Ingraham strikes the hour about 10 minutes late, as does the 1/2 hour. The lever that actuates the trip lever arm is friction fit on the minute arbor. Is this just a matter of rotating the friction fit piece to get in in sync?
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Uhralt

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Maybe. Before I would attempt to move the friction fit piece I would take a look at the lever it interacts with. Perhaps the lever has been bent and that might be easier to fix.

Uhralt
 

wow

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You have it set wrong. The squared off end of the curved brass piece must be touching the edge of the part with the pin on it. It should slip past it when turned counterclockwise. It is bent slightly to allow this.It is designed to allow you to turn the hands backward without causing damage or getting the strike out of sync.
 

Douglas Ballard

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Maybe. Before I would attempt to move the friction fit piece I would take a look at the lever it interacts with. Perhaps the lever has been bent and that might be easier to fix.

Uhralt
The levers are the flat, black type, not wire. They don't appear to be bent, which brings up the question, "how did the strike get off in the first place?" Thanks for the suggestion.
 

Douglas Ballard

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You have it set wrong. The squared off end of the curved brass piece must be touching the edge of the part with the pin on it. It should slip past it when turned counterclockwise. It is bent slightly to allow this.It is designed to allow you to turn the hands backward without causing damage or getting the strike out of sync.
I don't follow what you are describing. I see the squared off part of the brass piece. The only part that rotates is the part with the pin in it. Is there an adjustment you are suggesting? Thanks.
 

wow

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The flat end of the curved brass piece pushes on the side of the piece with the pin in it. It is angled so that when you turn the hands backwards, it slips past that pinned piece. In your photo it is not touching the flat end but the side of the curved piece. I don’t know how to explain it any better.
 

Douglas Ballard

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It's not your explanation, it is my failure to understand it.
a.png The black arrow, middle left, points to the brass piece, this is stationary. The Blue arrow, top right, points to the piece with the pin in it, this does move. As the minute hand rotates clockwise the copper piece pushes the disk with the pin, lifting the lift lever. If the minute had is turned in reverse, the copper piece allows the piece with the pin to bypass it. The problem I have is that the pin is lifting the lifting lever too late, causing a strike 10 minutes after the hour.
 

wow

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Your last photo is still not right as pictured. Bend the curved stationary piece so that the edge of it pushes the edge of the piece with the pin in it. In the photo it is not doing so. When you turn the arbor clockwise, the squared off edge of the curved piece pushes the side of the pinned piece. If it is still striking at the wrong, the brass curved piece will have to be moved somehow so it does as described. I will find one in my shop and shoot you a photo.
Here you are:

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Last edited:

R. Croswell

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Its probably obvious, but the purpose of this contraption is to allow the hands to be turned backward without damaging anything. Turning the hand backward allows the movable steel piece to just slip past the brass spring thingie. It doesn't take much to bend that thingie so I recommend that one just avoid turning the hands backward and avoid any future problem.

RC
 

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