. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Tlie annexed figure is a transverse section of a boat, constructed according to this invention, a, a, are the side and bottom planks; b, b, the ribs; c, c, the thwarts; (/, d, the internal bottom boards; e,e, the raisings or rails under the thwarts; _/", one of the tubular vessels attached thereto; g, g, the additional rails; and i, h, the correspond- ing tubular vessels, i, is a tube connected to the under side of the thwart bv cords, for which purpose the railsj, are a
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Tlie annexed figure is a transverse section of a boat, constructed according to this invention, a, a, are the side and bottom planks; b, b, the ribs; c, c, the thwarts; (/, d, the internal bottom boards; e,e, the raisings or rails under the thwarts; _/", one of the tubular vessels attached thereto; g, g, the additional rails; and i, h, the correspond- ing tubular vessels, i, is a tube connected to the under side of the thwart bv cords, for which purpose the railsj, are applied; k, k, are the valves or doors for closing the apertures in the sides of the boat; they turn on a hinge at the upper part,and are furnished with weights to cause them to close readily, and be kept closed, when required, by means of cords. BRICK MACHINE. Frederick Ransome, of Ispwich, engineer, and John Crabb Blair Warren, of Little Horksley, Essex, clerk, for " Improvements in the manufacture of bricks, tiles, pipes, and other articles coynposed of plastic materials, and in the preparation o/plastic materials to be used for such ;—Granted July 6, 184G ; Enrolled January 6, 1817. The first part of the invention consists in mixing in the pug-mill, with the clay or plastic materials, of which bricks, tiles, and similar articles are usually composed, vegetable, bituininoi\s, or other sub- stances that are susceptible of being destroyed by fire, or burnt out of the bricks, &c., when burning. As the sole object of adding these destructible ingredients is to render the article porous, the addition of one-tenth part by weight, more or less, of the destructible to the indestructible or plastic ingre- dients, will be found to effect this object. Tiles, bricks, and pipes male in this manner will be found to be exceedingly porous, and, when employed for draining, will allow the water from adjacent earth to percolate or filter freely ihioiigh them into the ho
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