This 400 day clock with disc pendulum was made around 1900 – 1910. The brass base has a wooden insert. There is no suspension guard over the suspension spring, so I had to be extra careful in packing it for shipping.
Repair job 5689. The movement is Horolovar back plate number 1471. The suspension spring is .004 inch thick thinned by 30 strokes of 600 grit abrasive paper. New 19 x 36 mainspring.
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This Jahresuhrenfabrik (German for “Year Clock Company”) 400 day clock has the serial number 112975 on the back plate and was made around 1912. The diameter of the dial minute track is 2.5 inches. (Earlier clocks often have a smaller dial, whereas later, 1950s clocks have a larger dial, typically with a 3 9/16 inch time track.)
There are numbers and dots on various parts that may relate to batches of movements being made. Both plates have “39″ and “4″ stamped on the inside. The minute wheel cock and minute wheel both have “39″. The barrel, cap and arbor all have “39″ on them. Wheels T2 – T5 and the hour wheel have 3 dots and a “7″ on them. Can anyone explain these markings?
This movement has an early example of a guard for the suspension spring, with a brass cover on the bottom for shipping.
Here is a movie of the clock:
Here is a slideshow of more photos (click near the bottom of the photo to start the show):
Jahresuhrenfabrik became Aug. Schatz and Sohne around 1950. Their clocks almost always have a one-piece anchor in the escapement (as opposed to the anchor with adjustable pallets used by most makers).
Repair job 5206. Horolovar back plate no. 1349. 0.004 inch thick suspension spring. Suspension unit similar to 6789A but slightly longer so that pendulum doesn’t look too high above base. I would have liked it to be longer for the pendulum to be lower, but then too much would have been protruding for the suspension guard cap to cover.
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Here is a Jahresuhrenfabrik (Year Clock Company) 400 day clock made about 1949 in Germany. This company’s clocks were given the name Schatz soon after this. This clock has an attractive and unusual style of bezel around the dial, with wide front section and embossed decoration. The movement has the same gearing as older Jahresuhrenfabrik movements. This is the first movement with 49 in the circle on the back plate, characterized by not saying “No (0) Jewels Unadjusted.”
The dial is held by taper pins (later ones used collars held by a screw). It has the early style of motion work, with a cock holding the minute wheel. Later motion work has a screw through the center of the minute wheel.
The suspension guard has a short slider. It is probably original, although it looks like a later one with the top part cut off.
The base is like that on Kundo clocks of the period. I’ll need to see more examples to know if it is original to this clock.
Here is a video:
Here is a slide show:
Repair job 5122. Horolovar back plate no. 1271. Suspension spring thickness .004 inches. I cleaned the movement, polished 7 pivots, and smooth broached the pivot holes.
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