Fuente: WIPO "rice" 3320. Rice, E. V. Feb. 14. Draught, regulating.-Relates to dampers for stove pipes which are automatically closed at a predetermined temperature. A cross-bar A has flanges a, a which are adapted to rest in slots B' in the upper edge of the stove-pipe section B. The bar A has a slot a communicating with a threaded bole a in an enlarged end a of the bar. The damper C is pivoted at c' to lugs a on the cross-bar, and has one side heavier than the other. A latch D, pivoted at d to the lug a, has a weighted end d' and a lip d adapted to engage the damper C when in the open position. An expansible bar E of brass &c. is laid in the slot a of the cross-bar and contacts at the inner end e with the latch D, and at the outer end is fixed to an enlarged portion e which screws into the hole a. A stem F secured to the damper passes through the stove pipe, and is provided with a handle G, whereby the damper may be turned into the open position, Fig. 1, where it is secured by the latch D. If the heat in the stove pipe becomes too great, the rod E expands sufficiently to raise the latch D and allow the damper to close. By adjusting the rod E through the screwed portion e', the damper may be closed at any required temperature.3>1>4>2>6>7>2>3>4>1>