| The type of remontoire used is similar to that by Tavan (1).
It's action is explained as follows and is depicted in the drawings
below: The maintainer is the spiral spring s on the arbor of the impulse lever a b q; it operates at every other vibration, the arming (by the wheel teeth) takes place during the intermediate ones. The escape-wheel moves nearly a whole space at the arming and only just slips off P on to p at the other, when q escapes and impels the balance by o on impulse pallet t. The difference between Tavan's remontoire on the one used by Dent is that the arming of the remontoire is done by a separate spring loaded lever apart from the spring detent. Also in the design depicted the escapement is a lever type whereas in Dent's design the escapement is an Earnshaw-type detent chronometer escapement. (1) Delightful Machines - Frodsham's Resume of Remontoires, February 1878.
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