The cone or conical wheel of a watch or clock, designed to equalize the power of the mainspring by having the chain from the barrel which contains the spring wind in a spiral groove on the surface of the cone in such a manner that the diameter of the cone at the point where the chain acts may correspond with the degree of tension of the spring.
A similar wheel used in other machinery.
a spirally grooved spindle in a clock that counteracts the diminishing power of the uncoiling mainspring
a cone-shaped gear found in most British spring clocks to regulate timekeeping against the contrary nature of a spring, which pulls strongest when fully wound and weakest when nearly run down
a cone-shaped pulley with a spiral groove, used to maintain even travel in the timekeeping mechanism as the force of the mainspring lessens while it unwinds
a conned or fluted wheel above the mainspring barrel
a device designed to even out the torque of the mainspring as it unwinds
a somewhat cone shaped device for varying the torque of the mainspring input to the watch or clock gear train
Coned-shaped device in clocks to even out the decreasing force of a going spring on unwinding. The device was invented c. 1500, used to the late 17thC in continental clocks and to c. 1750 in continental watches. In Britain its use in clocks and watches continued until c. 1880-1900. See also barrel and train.
18thC clockwork invention: a cone shaped drum , linked to the spring barrel by a length of gut or chain. The shape compensates for the declining strength of the mainspring thus ensuring constant timekeeping.
A Fusee Engine was used to make fusees They were used around the early 1800's Watches used a small chain drive to help keep time The fusee looked like a miniature wedding cake inside the watch which is used to equalize main spring power which evens the rate of the watch The tiny chain wraps around the fusee when the watch was wound
Cone shaped part usually with grooves to accept a cable attached to the barrel, fixed to the great wheel of the clock by a slip washer with the winding ratchet inside. Its purpose is to equalize the torque exerted by the mainspring as the spring runs down, when fully wound the line pulls on the small end of the cone and when unwound the line is at the large end of the cone thus the power applied to the train is more or less the same when it is fully wound as it is at the end of its duration.
A fusee is a cone-shaped, grooved pulley used together with a barrel that contains a mainspring.