Page:Popular Science Monthly Volume 88.djvu/148

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��A Fuel Economizer

���A CONSIDERABLE portion of the heat from the ordinary home fur- nace escapes, by way of the flue-pipe "and chimney, into the open air. Conse- quently, if this wasted heat could be diverted into the rooms of the house, less coal would be required ; and more heat could be pro- duced from the coal used. The device shown in the illustra- tion, which should be installed with the heating system, con- sists essentially of two pipes of sheet metal, one enclosed within the other. The inner pipe is the flue ; and the outer enclos- ing pipe, which should be 4'' or 5" wjjf\j larger in diameter than the inner pipe, carries the air from the cellar up along the hot flue pipe. The air enters the outer pipe by way of the opening at A; and as the air rises, it absorbs the heat from the flue. Directly above the floor on each story, a register is installed in this outer pipe; and the hot air, which is ordinari- ly wasted, is thus used to heat the rooms. The outer pipe should be led into the attic, where it terminates, and a ring should be placed over its open end to prevent the entrance of dust and par- ticles of wood into the device. The in- ner pipe, of course, enters the chimney in the usual way. To increase the ef- ficiency of the outer pipe, it is advisable to cover it with a layer of asbestos, which insures the escape of the heat only at the registers on each floor.

Helping to Kindle Fire Wood

SMALL kindUng can be fired quickly if the wood is dipped in a hot solution of two quarts of tar and six pounds of resin. When this is cool, fine sawdust and powdered charcoal should be added until a thick consistency is obtained. This mixture should be spread in a layer one inch thick over the kindling wood.

���Popular Science Monthly A Remedy for Sagging Doors

THE ten- dency o f heavy swinging garage or barn doors to sag can be rectified by proper bracing. Two i^"" iron rods are fitted diagonally in-' side the doors from the lower outer corner to the hinge in each upper corner. The rods are bent in the shape of an eye at one end and threaded at the other. The eye is bolted to the hinge while the threaded end is passed through the flange of an L-shaped iron cleat held down by a lug. A nut which holds the rod in the cleat serves as a turnbuckle for raising the door to its original position.

Pouring from Lipless Jars

LIQUIDS are likely to be spilled when pouring from a vessel that has no lip. If a glass rod is held against the rim it conducts the liquid where it is required and with care not a drop need be lost.

Waste Heat Warm.s Water

THE wasted heat from a small gas heater can be put to work, warming water for house- h o 1 d use. A small stove pipe should be led from the top of the heater and underneath a hot water tank placed in a horizontal position. A section of eaves trough to cover the pipe in its contact with the tank will save much heat.

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