Home instruction for sheet metal workers . 274 Bending Operation on Brake in Forming Common Bar for Skylight bends on /, m and n in diagram X are made as explained in , 278 and 279. Having bent the various parts the student is ready to put theskylight together, Fig. 287. The back and one side of the sky-light should be joined square at A, then the front and oppositeside at B. These corners should only be tacked and remain sountil the opposite corners are joined at C and D. As the dis-tance between the bars in this case measures 5% in. as beforeexplained, mark off the distances
Home instruction for sheet metal workers . 274 Bending Operation on Brake in Forming Common Bar for Skylight bends on /, m and n in diagram X are made as explained in , 278 and 279. Having bent the various parts the student is ready to put theskylight together, Fig. 287. The back and one side of the sky-light should be joined square at A, then the front and oppositeside at B. These corners should only be tacked and remain sountil the opposite corners are joined at C and D. As the dis-tance between the bars in this case measures 5% in. as beforeexplained, mark off the distances on the back and front curb 202 Home Instruction for Sheet Metal Workers and tack in position the common bars E and F, after which crossbar G is tacked in the center between the common bars. If theskylight lies perfectly level, solder all the joints complete, whenit will have the appearance shown in Fig. 253. In the construction of large flat skylights, 50 or 100 ft. long,they are usually set together at the building, fitting all work at. Fig. 2 76 Bending Operation on Brake in Forming Common Bar for Skylight. the shop, and to speed the work at the job, instead of markingoff the dimensions between the bars as in Fig. 287, a V-shapedstay is bent as in diagram X, which has the required length ordistance between the bars and is used in spacing the bars, insteadof the 2 ft. rule. After the model skylight is completed at the school, instruc- A D b\^\f l==5a
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
