Job Number 180079

This is a grade 582, 16 size, 15 jewels, military timer made about 1943. 

The "clutch" on these has no setting mode. There's no teeth at one end. And a simple coil spring holds the clutch in winding position.

Here's the stem parts in place.

On these watches, the minute motion is transferred to a sub-dial, while the seconds are moved to the center. The actual center wheel is minutes as normal, but it is on a hollow tube with the shaft down the middle for the large seconds hand.

Anyway, there is an extra cock and pinion to make this all happen.

Much of this watch looks like a normal 16 size Elgin.

Under the dial is where all the interesting stuff is. The dial is on risers to make room. Start, stop and fly back...

Here's where the staff is for the sub dial on the front.

Elgin used a gold flashed finished to conserve nickel for the war effort. Other parts have a black finish.

Here is the dial side of the 4th wheel. Note that it is a normal 16 size Elgin part. The shaft sticks up where, on a normal watch, the second hand would go. 

See the entire album for this project here.

By the way, this watch is not the same as job number 180078, which is also a timer. That one is waiting for a balance staff.