Hardware merchandising January-June 1897 . o connection with other flues or openings, and always of the same area fromtop to bottom. A well jointed tile flue, pre-ferably round, is better than a square brickflue of larger area. The chimney flue shouldbe carried 3 or 4 feet below the smoke pipeentrance and provided with a clean-out doorat the base, tightly fitted, affording easyaccess for removing the accumulated dustand soot. No chimney flue should be less than 8inches in depth. Ventilating flues should be provided forin original plans. They should be located in inside walls, and in proximity
Hardware merchandising January-June 1897 . o connection with other flues or openings, and always of the same area fromtop to bottom. A well jointed tile flue, pre-ferably round, is better than a square brickflue of larger area. The chimney flue shouldbe carried 3 or 4 feet below the smoke pipeentrance and provided with a clean-out doorat the base, tightly fitted, affording easyaccess for removing the accumulated dustand soot. No chimney flue should be less than 8inches in depth. Ventilating flues should be provided forin original plans. They should be located in inside walls, and in proximity to chimneyflues when possible, deriving therefrom thenecessary heat to secure an upward move-ment of the currents. The opening in theseflues should be at the bottom. The areas of vent flues should be about Jsquare inch to every 20 cubic feet of space. U. S. NATIONAL CONVENTION. The official call for the fifteenth annualconvention of the National Association ofMaster Plumbers has been issued by presi-dent W. H. Doyle, Philadelphia, and the. CURTIS & CURTIS No. 23 Garden , Conn. MANUFACTURERS OF No. 78 Hand or Power Pipe Cutting and Threading Machine. Range 2x/2 to 4 inch. R. K. Forbes Patent Die Stock FOR HAND OR POWER. OUR HAND MACHINES are the only portable hand ma-chines in the market with which one man ran cut ofl and threadlaree nipe up to eight inches diameter without assistance. Twoand three inch pipe is threaded by using only one hand on thecrank, thus saving much time and hard labor. OUR POWER MACHINES occupy less floor space, requireless power to run theui, are more simple of construction and are farcheaper than any other make of machine of the same range in themarket. The Curtis Pipe Threading Attachments for Lathesthread all sizes of pipe from J to 8 inch, and attachable to anymake or size of lathe. Cheaper than any power pine threading ma-chine in the market. Machines for American or English Standardof pipe threads furnished without extra cost. Ratchet
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