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A fusee (from the French fusée, wire wound around a spindle) is a cone-shaped pulley with a helical groove around it, wound with a cord or chain attached to the mainspring barrel of antique mechanical watches and clocks. It was used from the 15th century to the early 20th century to improve timekeeping by equalizing the uneven pull of the ...
Pocket watch with gears labelled. The going train is the main gear train of the timepiece. It consists of the wheels that transmit the force of the timepiece's power source, the mainspring or weight, to the escapement to drive the pendulum or balance wheel. [4]
Plain barrel I.e. without teeth, used in fusee watches and clocks. A chain, or cord, was wound around the plain barrel, connecting it to the fusee. Going barrel The form used in modern watches, is wound by turning the arbor and drives the watch movement by a ring of teeth around the barrel.
Each specific watch movement is called a caliber. [3] The movement parts are separated into two main categories: those belonging to the ébauches and those belonging to the assortments. [2] In watch movements the wheels and other moving parts are mounted between two plates, which are held a small distance apart with pillars to make a rigid ...
Occasionally, a watch movement intended for a hunting case (with the winding stem at 3:00 and sub second dial at 6:00) will have an open-faced case. Such watch is known as a "sidewinder." Alternatively, such a watch movement may be fitted with a so-called conversion dial, which relocates the winding stem to 12:00 and the sub-second dial to 3:00.
The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.
Tourbillon movement (high resolution)In horology, a tourbillion (/ t ʊər ˈ b ɪ l j ən /) or tourbillon (/ t ʊər b ɪ ˈ j ɒ n /; French: [tuʁbijɔ̃] "whirlwind") is an addition to the mechanics of a watch escapement to increase accuracy.
The left watch has a 24-hour analog dial with a mechanical 1/6s "sweep" movement, while the right one has a more common 12-hour dial and a "1s" quartz movement. A Russian mechanical watch movement with exhibition case back, showing its movement. A so-called mystery watch, it is the first transparent watch, [50] c. 1890. The movement is fitted ...
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