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Inventory no. 38988 - Former Display Label

c. 1855

Signed, on the dial, "C - DETOUCHE FOURNISSEUR DE L'EMPEREUR RUE St. MARTION Nos 228 & 230 PARIS, and, on the back, "C. DETOUCHE ... 17643 BREVETE S. G. D. G.".
Movement of brass, stell and bone; enamelled dial; gilt brass case; ebony stand.
The electro-magnetic escapement operates according to the system devised by Robert Houdin (1805 - 1871), the French horologist and conjurer. The pendulum has two cuirved arms attached near the top, thus {symbol}
At the end of the pendulum's swing to the left (i.e. viewed from the back) the left arm touches a brass contact, thereby completing an electric circuit and energising the electro-magnet, which attracts and armature. The movement of the armature towards the magnet advances, by means of a system of levers, the hands of the clock and sets an impulse spring on the right. When the pendulum swings back to the right it disengages the impulse spring and thereby receiveds an impulse which causes it to swing back to the left. The armature of the magnet is at the same time disengaged, so that the cycle of movement may be repeated.

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