Information about Pin Lever Watch
A pin-lever or pin-pallet escapement is a lever escapement used in mechanical watches that uses metal pins on the pallet of the lever, rather than jewels. The pallet is the part of the lever that engages the escape wheel, which is critical for transferring the energy stored in the spring to the balance wheel. Jewelled pallets can be made much smoother than metal pins and therefore lose much less energy due to friction. The metal pins also wear much quicker.
The pin-lever escapement is also called Rosskopf by the name of its inventor Georges Frederic Roskopf.
Although this technically includes some jeweled watches (the Timex 21 Jewel was an example of a pin-lever design with added jewels), the most common meaning is an inexpensive watch using plain steel pivots rather than jeweled bearings. While these watches could be more rugged than a jeweled mechanical watch, they wore far more quickly and were less likely to maintain a constant rate.
By 1980 quartz watches dominated the market, and low-end mechanical production largely ceased.
The pin-lever escapement is also called Rosskopf by the name of its inventor Georges Frederic Roskopf.
Although this technically includes some jeweled watches (the Timex 21 Jewel was an example of a pin-lever design with added jewels), the most common meaning is an inexpensive watch using plain steel pivots rather than jeweled bearings. While these watches could be more rugged than a jeweled mechanical watch, they wore far more quickly and were less likely to maintain a constant rate.
By 1980 quartz watches dominated the market, and low-end mechanical production largely ceased.
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The pallet fork or pallet lever is an integral component of the lever escapement of a typical mechanical watch. The pallet fork has two jewels; which are called the entry and exit pallets.
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jewel bearing is a bearing which an unlubricated metal shaft spins in a jewel-lined pivot hole. The hole is typically shaped like a torus and is slightly larger than the shaft diameter.
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balance wheel is the part of a mechanical watch that controls its rate, analogous to the pendulum in a pendulum clock. The balance wheel rotates back and forth, being returned toward its center position by a spiral spring, the balance spring or hairspring.
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A pin-lever or pin-pallet escapement is a lever escapement used in mechanical watches that uses metal pins on the pallet of the lever, rather than jewels. The pallet is the part of the lever that engages the escape wheel, which is critical for transferring the energy stored
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Georges F. Roskopf (1813-1889), the inventor of the pin-lever movement, was born in Germany and became a naturalized Swiss citizen.
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Early life and introduction
In 1829, when Roskopf was 16, he went to La Chaux-de-Fonds and began training in commerce with F...... Click the link for more information.
The term Timex can refer to:
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- Timex Corporation, a large manufacturer of watches
- Timex (Unix utility), a Unix utility tool used to measure the duration of shell processes
- Timex Sinclair, a series of microcomputers
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A quartz clock is a clock that uses an electronic oscillator that is made of a quartz crystal to keep precise time. This crystal oscillator creates a signal with very precise frequency.
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