. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 184 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [JUME, where Ihe compressing pistons next enter the precedingapartment, to effect the formation of a brick therein. TINNING PIPES, For "improvements in maddnerij fur making and tinning lead ; Robert W. Lowber, Rochester, N. York. This is for tinning lead pipes, (wliich are formed in a die and around a mandrel) by introducing the melted tin through the mandrel, or core, which is hollow and provided with apertures f
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 184 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [JUME, where Ihe compressing pistons next enter the precedingapartment, to effect the formation of a brick therein. TINNING PIPES, For "improvements in maddnerij fur making and tinning lead ; Robert W. Lowber, Rochester, N. York. This is for tinning lead pipes, (wliich are formed in a die and around a mandrel) by introducing the melted tin through the mandrel, or core, which is hollow and provided with apertures for the discharge of the tm inside the pipe. Claim.â" What we claim herein as oar invention and desire to secure by letters patent, is the method herein described of tinning the inside of lead pipes in the course of manufacture, by passing the melted tin down into the mandrel and out at the side thereof, as above made known, whether applied to this machine or any other substantially as ; VENTILATING STOVES. An " improcement in stoves for warming parlours, and for other pur- ; John Morrison, Newark, New Jersey. The nature of this improvement " consists in taking the air from near the ceiling of rooms, for supplying air to the lire, and thus incidentally ventilating the apartment. For this purpose there is a pipe which extends up from the ash pan to within a short distance of the ceiling, where it is made bell mouthed for the free admission of air. This pipe is surrounded by an outer jacket, which communicates with the chimney, the Ure cham- ber, and with the case surrounding the fire chamber of the stove, by separate pipes governed by dampers for regulating the draught, heat, &c. HYDRAULIC PAINT. An " improved mode of making hydraulic ; Thomas G. Warren, Troy, New York. The patentee says,â" This paint is composed of ' hydraulic cement,' (sometimes called ' water lime') made line by grinding, and ' linseed oil' to
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