The old form of spring became weaker as it was unwound and necessitated the use of a device called a fusee or spiral drum.
Old muskets fired by a fusee, with a prong to rest the barrel on.
This gave rise to the invention of the stack-freed and fusee, both contrivances to equalize the power of the mainspring.
The principle of the "drum and fusee" action will be understood from Fig. 201.
The abandonment of the key nullified the usefulness of the fusee, although some keyless fusee movements were attempted.
I cautiously presented my fusee but did not dare to fire against the orders.
fusee ChainA very delicate steel chain connecting the barrel with the fusee of a watch, chronometer or clock.
The other day, on the pier at Boulogne, I lit a fusee for the purpose of having a smoke.
He quickly manufactured a fusee, so that the mass would not blaze up until the yard was fixed.
Taking a cigar from his case and nipping off the end, he rasps a fusee to light it.