The Civil engineer and architect's journal, scientific and railway gazette . is of the crank of the engine serve also for the axisof the mill—whether the same be vertical or horizontal. Theshaft is provided with a fly-wheel, which receives an endless beltfor driving flour-dressing machines, and on the shaft there is aneccentric for communicating motion to the slide valves. Whentwo pairs of mill-stones are required to be worked by the sameengine, it may be effected by causing the piston-rod to pass throughboth ends of the cylinder, and connecting it at each end with theshafts of the upper mill-
The Civil engineer and architect's journal, scientific and railway gazette . is of the crank of the engine serve also for the axisof the mill—whether the same be vertical or horizontal. Theshaft is provided with a fly-wheel, which receives an endless beltfor driving flour-dressing machines, and on the shaft there is aneccentric for communicating motion to the slide valves. Whentwo pairs of mill-stones are required to be worked by the sameengine, it may be effected by causing the piston-rod to pass throughboth ends of the cylinder, and connecting it at each end with theshafts of the upper mill-stones; and, in case it should be at anytime desirable to work only one of the upper stones, the other maybe disconnected. WALLERS PATENT COFFEE-POT. This invention consists of a vessel divided into two equal partsby a dished partition A, with the centre depressed and pierced by ahole ; around the edge is attached a bent tube connected with acock B, forming a passage through the strainer C, from the upperto the lower h:jf of the vessel; the strainer is finely perforated. metal. Ascending from within a short space of the bottom of thelower chamber to within nearly .tbe top of the upper one, is atube E, passing through the centre of the partition and perfora1,edplate, and which tube is surmounted by a valve D. F is an ordi-nary spout communicating only with the lower division, and fittedwith a ground stopper. The mode of using the apparatus is this: the stopper being re-jnoved from the spout, the water is poured into the upper half of the vessel, the lap is then turned downwards to allow the waterto run into the lower half; when it has done running, the groundcoffee IS ]iut into the top division, the tap again turned stopper re-mserted, and the vessel placed on the fire. Wlu^iithe rattling of the valve, and escape of steam from under the lidhave continued a few seconds, the cofiee-pot is to be taken quiteaway from tlie fire and allowed to stand about two or thr
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