Does anyone have photos of a known to be original model-1? I would caution that there were variations in the model-2 and one would assume perhaps in the model-1 as well. It would appear that perhaps the linkage in George's pictures may not be original. I can't tell from the pictures in the article just what moves lever "A". The mouse release lever ("A" in the photo above) is in the same place as shown in George's pictures, but linkage "C" is not shown. In the publication, Elmer Ellsworth Dungan and the Dickory Dickory Dock Clock, by Charles Terwilliger, Supplement to the Bulletin of the National Association of Watch and Clock Collectoes, Inc., summer 1966, pages 8-9 there are pictures of a Model-1 movement. (On my model-2 lever "A" is attached directly to lever "B" at the pivot so there is no need for that linkage) The prototype apparently did work but I suspect this will require a lot of critical tweaking to get it reliable. Don't forget, they stopped making the model-1 shortly after production started because they didn't work. Some how when lever "B" drops off the snail-like cam, lever "A" has to drop as well or nothing happens. I don't have a picture of another model-1 so not sure what is original and what is not. Linkage "C" appears to connect lever "B" to a wire that turns an arbor to move lever "A" to cause the mouse drop. There should be a long wire from point A to the mouse drop unit at the top of the clock - the length is critical. The upper end has a tab that catches the stop pin. The left end of lever B moves up as the right end moves down on the cam. There is a snail-like cam behind the gear shown in the photo markup.
The mouse release is different but not that much different. I've never seen a Model-1 up and personal but your movement is essentially very similar to my Model 2.
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