Sattler clock work #1360
Erwin Sattler's Nautica #1365 with stainless steel case, top bezel 7 1/4 inches in diameter, base plate 8 inch from tripod leg to opposite side.
The window under 12 is the power reserve indicator, (8 day power reserve).
The slot above 12 is for key storage. The dial is a plate of brass 2 mm thick and silver plated.
The markers, numbers and Erwin Sattler Munchen are machined into the plate and blackened with enamel.
The seconds are on a sub-dial, also silvered with machined markers. The dial has a clear coat to prevent tarnishing of the silver.
The Sattler Clock Work #1360 features a gear train driven by a fusee.
The main spring is in the barrel on the left, the power is delivered to the train by a steel cable and a tapered spindle.
This insures the power to the train is constant though out the 8 day winding period, assuring consistent time keeping for 8 days.
When fully wound the cable covers the spindle. As the spring unwinds and power diminishes the fusee compensates by changing the torque
The Erwin Sattler clock work #1360: the escapement is accomplished by an 11 jeweled balance unit.
5 jewels on the balance wheel (two bearing jewels, two cap jewels and one roller jewel); 4 jewels on the pallet fork (two bearing and two pallets); and 2 jewels on the escape wheel (two bearing).
Side view of balance unit, showing roller jewel and pallet jewels.
The winding arbor passes through the Fusee and is supported by two stainless steel micro ball bearings. Using ball bearings in a clock work is almost unheard of, but is a hallmark of the Erwin Sattler Clock Co.
The rest of the gear train is supported by brass bushings in the heavy (2 mm) bass plates of the movement.
Oil reservoirs are cut into the plates. You can see two in the photo above. If properly maintained this clock will still be running 200 years from now!
A close up of the machined stainless steel bezel and the hinges.
The Natica #1365 has been out of production for a number of years.
Only 30 were made.
April (2006) Sattler introduce a new ship's clock, the Nautis #1395, it uses a modified calibre #1380 clock work (also a fusee drive gear train).
The case is Nickeled Bronze, the retail price is now over US $11,000.
The top dial is the seconds dial, dial at right is power reserve indicator (15 day power reserve), largest dial is the minutes dial,
and the hour dial at the bottom. the winding gears are designed so as not to interrupt the timing gear train when winding.