. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 145 LIFE BUOYS AND BOATS. Arthur Howe Holdsworth, Esq., of Brookhill, Dartmouth, De- vonsliire, for " Improvemeiils in buoys, and in giving buoyancy to ;—Granted August 29, 1S46; Enrolled February 20, 1847. This invention relates to the employment of india-rubber for tube.», and vessels, prepared ns described iu the specifications of patents granted to C. Hancock and A. Parkes. The life-buoys are tubular vess
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 145 LIFE BUOYS AND BOATS. Arthur Howe Holdsworth, Esq., of Brookhill, Dartmouth, De- vonsliire, for " Improvemeiils in buoys, and in giving buoyancy to ;—Granted August 29, 1S46; Enrolled February 20, 1847. This invention relates to the employment of india-rubber for tube.», and vessels, prepared ns described iu the specifications of patents granted to C. Hancock and A. Parkes. The life-buoys are tubular vessels of prepared india-rubber, filled with air, like those described for boats; each vphen thrown into the water will constitute a life-buoy, and cords may be attached to them, to admit of a person securing himself thereto. " Watching buoys" mav be made of anv form, but the patentee prefers a globular shape, or a cylinder with hemispiierical ends; the buoys are enclosed in a net of strong cord, and the mouth secured to a ring, to vfUich the raooring chain is to be fastened. For the purpose of giving additional buoyancy to boats, tubular vessels of prepired india-rubber are filled with air, and attached bv cords to the raisings under the thwarts, from the head to the stern,or placed across the boat, beneath the thwarts, and secured thereto by cords. Apertures five by three inches are made in the sides of the boat (the bottom being level with the thwarts), and each furnished with a valve, opening outwards, so that water may be discharged but cannot enter through tliem. When applying this invention to the quarter boat of a large ship, four apertures in the sides are made with valves; to each side of the boat are attached six tubes, six feet long and six inches in diameter, four being secured to the raisings below, and two to the raisings above the thwarts: each tube is capable of sup|)orting from 74 to SO lb. when immersed in the water. The rea- son for placing the tub
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