Practical Sheet Metal Work and Demonstrated Patterns Volume 2; A Comprehensive Treatise by John Henry Teschmacher
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. 1911 Excerpt: ...measuring and making dimension sketches. Its only disadvantage is the comparative difficulty of bending, which is not serious. The one advantage of the latter method is the comparative saving of time in forming, its disadvantages being sharp bends, except when certain brakes or dies are used, discrepancy between the profile of the lining and that of the trough, thus leaving the lining improperly supported, multiplicity of seams to make outside of the shop, and time consumed in measuring dimensions and making sketches. A gutter like that shown in Fig. 56 is very easily made and applied, and can be satisfactorily formed on a brake, as the hight of the wood core above the roof is the same at all points, the pitch of the gutter being obtained by placing the core at a slight angle with the eave. When the metal is not wide enough to form the entire stretchout in one piece, a lock seam is usually made at "a," Fig. 56a, as indicated in Fig. 65. What has been said about the gutter, Fig. 63, applies to the gutter, Fig. 57a, but, as the latter must be neatly finished over the outer edge of the crown mold, something will be said on that point. A method of finishing a gutter edge is shown in Fig. 66, which has been found effective and economical. Strips of galvanized iron are cut and bent at right angles in the brake or bar folder, to form angle pieces 5-8 inch on one side and inch less than the width of the face of the crown mold on the other. The narrow leg of the angle is then nailed to the face of the crown mold with the wide leg flush with its top, the gutter lining is then hooked over the wide outstanding edge. All is bent down together as far as possible with a pair of roof tongs, and then laid up close to the face of the mold with a block and ma...
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