illinois 23j Bunn Special

[JRS]

I would like to know if it is correct or normal for a Illnois 23j /16s/ 163A Elinvar movement to show if the wind mechanism is backwards?? In other words if I pull the lever set out and try to set the time rotating the crown clockwise the hands only move in a counterclockwise position?? It is like a reverse move position!!Is this correct?? Is this a problem, It seems to run well and all! Thanks, Jim

[JRS]

I would like to know if it is correct or normal for a Illnois 23j /16s/ 163A Elinvar movement to show if the wind mechanism is backwards?? In other words if I pull the lever set out and try to set the time rotating the crown clockwise the hands only move in a counterclockwise position?? It is like a reverse move position!!Is this correct?? Is this a problem, It seems to run well and all! Thanks, Jim

[doug sinclair]

Jim,

Welcome to the NAWCC Message Board

I think your are expecting the hands to move clockwise when you turn the crown clockwise, and counter-clockwise when you turn the crown counter-clockwise? I suppose that might happen with some watches, but it depends how the setting mechanism is geared. The attcached image is of a Waltham Crescent Street, but the set up is much like the Illinois, and may help you understand what is happening.


http://members.shaw.ca/doug.sinclair/crescent%20st%20april%20'04%20detail%20003.jpg

In this image,:

A/ Set lever. B/ winding pinion. C/ Setting pinion D/ Shipper bar (sliding pinion lever). E/ Cover over intermediate setting gear. Post in the recess next to E is where the minute wheel fits. Jeweled bearing in the middle of the plate is where the centre wheel arbor and cannon pinion (carries the minute hand) fits.

When you pull the lever (A) out, the shipper bar (D) moves down toward the centre, moving the setting pinion (sliding pinion) into contact with the intermediate setting gear (under B). The intermediate setting pinion meshes with the minute wheel which fits on the post in the recess in the plate, and it meshes with the cannon pinion which fits on the centre wheel post which emerges through the jewelled bearing in the middle of the plate. Turn the crown clockwise, and the setting pinion C turns clockwise, turning the intermediate setting gear (at E) counter-clockwise, turning the minute wheel (sits on the post) clockwise, which turns the cannon pinion (middle, which carries the minute hand) counter-clockwise. So, there's nothing wrong!

[JRS]

Thanks for your input. In reviewing my message I meant to say the hands do move in both directions. It's just that they move opposite of which way crown is being turned.

[doug sinclair]

JRS,

I pretty well knew what you were saying. I trust that you now understand why the hands move the way they do when you turn the crown either way? Some watches have two intermediate setting gears which means the hands turn c'wise when you turn the crown c'wise, and cc'wise when you turn the crown cc'wise.

[JRS]

Thanks Doug, I do now understand and appreciate the info. Regards, Jim