Home instruction for sheet metal workers . bends. The cornice beingsmall in this case, the entire profile is bent in one piece, and con-sequently no joints are made. But when joints are made, asin the next exercise, the method of construction, to save time insoldering and riveting, will be explained. The pattern for theface of the modillion is obtained by taking the girth along theprofile from P to R to 19, and placing it at P1 R1 19, making thepattern 2y2 in. wide. The double dots at Rx and R1 in the pat- Making a Plain Cornice 97 tern do not indicate bends, but show where the forming of thes
Home instruction for sheet metal workers . bends. The cornice beingsmall in this case, the entire profile is bent in one piece, and con-sequently no joints are made. But when joints are made, asin the next exercise, the method of construction, to save time insoldering and riveting, will be explained. The pattern for theface of the modillion is obtained by taking the girth along theprofile from P to R to 19, and placing it at P1 R1 19, making thepattern 2y2 in. wide. The double dots at Rx and R1 in the pat- Making a Plain Cornice 97 tern do not indicate bends, but show where the forming of thesemicircles end, as at R° and R in the profile in the sectionalview. The pattern for the side of the modillion is pricked directfrom the sectional view, allowing a lap for fastening, as indi-cated by the dotted lines. As the depth of the panel is J/> in.,add this, as shown in the front elevation, when S T U V is thepattern for the panel head, to which laps are allowed. This completes the patterns for the plain cornice; two panel heads,. Fig. 131. Forming Drips on the Front Mold. two modillion faces and four modillion sides are required. Ingetting out the main cornice, a square piece of metal is cut whoselength equals the girth M N, and whose width will be 1 ft. 3 panel miter need be cut on the main cornice, as it willcontinue in one piece, as shown by n o and r s in the front ele-vation, and the panel miters set over it. In this case, when forming the cornice, start at the drip or on dot 34 as A, Fig. 131, where asquare bend has been made from35 to 35. Reverse the sheetby 35 in B and make a bend ondot 33 from 35 to 35°. Leav-ing the sheet in the brake, drawout same to dot 32 in C and makea square bend from 35° to the sheet D and makea square bend on dot 31 from35v to 35x. This forms the drip, from 35 to 31 in the sectionalview in Fig. 130, the balance of the cornice being formed in theusual manner. The face of the modillion is formed as in It is
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
