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The originals were made by Dungan & Klump, however the movements for the model 1, & 2 were manufactured by New Haven. The model 3 was only a prototype. The model 4 & 5 had movements made by Sessions. It is quite an interesting story and can be found in A Supplement to the BULLETIN of the Nationmal Association of Watch and Clock Collectors, Inc.. 4 1966 Summer 1966. The article is by Charles Terwillinger and is titled, Elmer Ellsworth Dungan and the Dickory Dickory Dock Clock. I expect it is available in the NAWCC library.Thanks, I thought so. It looks too new to be an original. Who made the originals?
There have been a number of "mouse clocks" produced. The original Dungan & Klump, models 1 & 2 had a balance wheel movement that lived in the bottom of the case and used a chain to lift the mouse. They struck the hour each hour on a small bell. At "1", when the clock struck, a gizmo at the top of the clock released the mouse to drop. The models 1 & 2 never worked very well. The model 3 prototype supposedly fixed the problems but was never produced. Dungan had a falling out with New Haven and the model 4 had a Sessions movement with a pendulum at the top. The model 5 is almost never seen and was a table or shelf clock, smaller in size with a conventional round clock dial above a slot where the mouse just went up and down didn't do anything else.Mine doesn't have a pendulum (balance wheel), but the basic operation is that the string operating the mouse turns one turn per hour, raising the mouse one number. At 1:00 there's a method to allow the mouse to fall. In mine, the driving wheel has a notch where the teeth are disengaged and the mouse falls to the lower 1:00 setting. When it falls, a bell rings and it starts over again.
The diameter of the string is critical. Too large and the mouse gets to "1" early, too small and the mouse gets to "1" late. It won't keep time unless you have the correct string. I believe Horolover has the correct replacement string, if it is a Horolover.No name on it. Looks like the Horolover repro to me. String broke so I replaced it with monofilament fishing line. Mouse is now happily climbing as it runs. I set it at 1:00 today. We’ll see where the little varment is tomorrow morning.