Great video! I've been reading up on the period of watchmaking in the 16th-18th century, and wondered if there were any videos on YT concerning the verge escapement. Good find - love the discussion format.
@thebrizzell3 жыл бұрын
So wait how is the chain helping with vibration
@lutzderlurch7877
10 ай бұрын
The chain and fusee is helping with uneven spring tension. The verge escapement is directly influenced by the force applied to it. depending on the force applied to the verge escapement, it allows the watch to run faster or slower accordingly. As a spring gains in tension and power as it is wound up, that means the power it supplies drops, as it slowly unwinds. To equal out the power output, the chain and fuse was used: The spring sat in a drum/cylinder. the drum is connected via a chain (or earlier: a piece of catgut, like strings of instruments!) to the fusee, a spiral shaped conical piece. The first wheel of the gear train is attached to the fusee. When winding up the watch, the chain is pulled off the spring drum and coiled unto the fusee, starting with the wide section and fradually climbing up to the narrow section. The now fully wound spring is under maximum tension and applies the greatest force, pulling on the chain. The chain sitting on the narrow part of the fusee transfers that power to the gear train. With the narrow part of the fusee the diameter is small and thus acting like a short lever. As the watch gradually runs down, the spring is gradually losing tension and pulling with less and less force on the chain. The chain is slowly uncoiling from the fusee, and the diminishing force of the spring is pulling the chain where the fuse is thicker, it's diameter larger and thus the lever it is acting upon grows. Quite ingeniously, as the spring unwinds and pulls with decreasing force, it is given an increasingly longer lever to act on, to mechanically cancel out the decgrading power. The force arriving at the gear train is (ideally) perfectly uniform.
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Great video! I've been reading up on the period of watchmaking in the 16th-18th century, and wondered if there were any videos on YT concerning the verge escapement. Good find - love the discussion format.
So wait how is the chain helping with vibration
@lutzderlurch7877
10 ай бұрын
The chain and fusee is helping with uneven spring tension. The verge escapement is directly influenced by the force applied to it. depending on the force applied to the verge escapement, it allows the watch to run faster or slower accordingly. As a spring gains in tension and power as it is wound up, that means the power it supplies drops, as it slowly unwinds. To equal out the power output, the chain and fuse was used: The spring sat in a drum/cylinder. the drum is connected via a chain (or earlier: a piece of catgut, like strings of instruments!) to the fusee, a spiral shaped conical piece. The first wheel of the gear train is attached to the fusee. When winding up the watch, the chain is pulled off the spring drum and coiled unto the fusee, starting with the wide section and fradually climbing up to the narrow section. The now fully wound spring is under maximum tension and applies the greatest force, pulling on the chain. The chain sitting on the narrow part of the fusee transfers that power to the gear train. With the narrow part of the fusee the diameter is small and thus acting like a short lever. As the watch gradually runs down, the spring is gradually losing tension and pulling with less and less force on the chain. The chain is slowly uncoiling from the fusee, and the diminishing force of the spring is pulling the chain where the fuse is thicker, it's diameter larger and thus the lever it is acting upon grows. Quite ingeniously, as the spring unwinds and pulls with decreasing force, it is given an increasingly longer lever to act on, to mechanically cancel out the decgrading power. The force arriving at the gear train is (ideally) perfectly uniform.