Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work. Over 800 illustrations

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ...be of cast iron, with a projection of about 15 inches from boiler, measuring 16 inches on boiler and 12 inches in width. Lugs to be 1V2 inches thick and to be heavily ribbed and securely fastened to the boiler. Feed pipe will be approximately 12 feet long, securely braced and located 3 inches above the upper row of tubes, Construction of Ninety-Degree Elbow. Fig. 1 shows a cross sectional elevation of the tapering pipe connection which is lap riveted and made up of seven heavy plate rings. The upper ring, /, is a section of a true cylinder and does not require a development for securing its pattern. The other sections are tapering, the connecting sections overlap each other, the difference in diameter, therefore, between the small and large ends of all sections, excepting ring /, is equal to two times the plate thickness. This is evident from the cross sectional drawing (Fig. 1 ). Section / could be made like section /', but this would require some additional work in making the elbow. It is better to consider the ring / as a part of a horizontal pipe to which the elbow joins. entering through the front head. Feed pipe t' I 0 perforated with 5/10-inch holes on each side, of sufficient number to equal the area of pipe. Inner end of pipe t" 1 e left open. All tests of steel fur tensile strength, elongation and reduction of ar,1 will he made at tile place of manufacture. Shell will al-o stand customary bending t sts uith.ut fracture, and in all respect will conform t the.»-oci;.ti' n of American Stci 1 Manufacturers' Standard Specification. Kadi id. le to he plain'y-tampid with the name "f maker, brand: d t 'ti ili' strength. IMati to be prperl;. beveled for calking and b ih r thorough!) call.ed with round nose calking tool. The a' e nientl. ned ...