Patents of Interest to Builders.

Progress, Volume XIII, Issue 4, 1 December 1917, Page 93

Patents of Interest to Builders.

Skylight. —A patent, No. 39,209, has been taken out by Prank Boss of Hastings, plumber, according to which the sides and lower part of the capping are made integral, and the. upper part of the capping has hooded ends, which fit upon and

retain the upper ends of the sides of the capping. The upper part of the capping is integral, with a flashing which passes under the roof-covering. The capping of the combing and the capping of a central bar are retained by means of a minimum number of fastenings.

Cistern for W.C.’s patent, No. 37,818 lias been taken out by Samuel Mills and George Mills of Auckland, carpenters. According to this invention, the upper end of the down or (lush pipe is fitted with an S trap below the cistern, and from such S trap an inner tube or the outlet-pipe from the cistern extends upwards through the bottom of the latter. Over the

inner tube or outlet pipe is provided a hollow cone or siphon bell, from the top of which is led an air-inlet pipe, the outer end of the latter being adapted to be opened and closed by the movement of a float actuated by the rise and fall of the water within the cistern. Water is fed into the cistern at a point near the bottom of the latter by an ordinary ball cock, and an air-lock is established in the cone

or siphon bell and the inner tube and trap, which air-lock normally restrains siphonic action from occurring until such time as it is desired a flush shall take place, when the air-lock is broken down by opening same to the atmosphere.

Gas Stove Hot Water Supply System. A patent, No. 38,577, has been taken out by T. S. Mould, Agent, of 430 Little Collins St., Melbourne, according to which a boiler or coil of pipes is disposed within a gas stove or cooker, the gas stove or cooker being specially designed and constructed to receive same. By this means the heat used for cooking is further utilized to heat the water contained in the said boiler or coil of pipes disposed within the stove. In the event of hot water only being required, apart from cooking, an independent gas-jet is carried right along the back of the stove and immediately under the boiler. The boiler or coil of pipes disposed within the gas stove or cooker is fitted with the usual flow and return circulating-pipes, which connect it With the tank at the higher level; this tank

has within it, or forming part of it, another and smaller tank with which it directly communicates, and the smaller tank is connected up with cold-water service-main, or other equivalent source of supply in a known way, and the supply of water to it is regulated by the usual ball cock or the like in it. The discharge of the small feed-tank into the larger hot-water storage-tank is at or near the bottom of the latter, and the cold-water feed will pass into the hot-water tank when the level of water in it falls, due to hot water being drawn off from it; while the hot-water draw-off house-service conduit on the storage-tank is disposed a substantial distance above the bottom. The hot-water delivery-point from the boiler into the hot-water storage-tank will be some distance up from the bottomsay, from one-third to two-thirds of the depth of the tank from the bottomand the return of cooler water from the tank to the boiler will be near the bottom; while the hot-water draw-off point for use will be some distance up from the bottom of the tank.