Home instruction for sheet metal workers . d on dot d, Fig. 272, and a bendmade to the required angle, as shown by A. The sheet is nowreversed in the brake, A, Fig. 273, and the proper angle bent ondot c, shown by B. Again reversing B, place it in the brake, 200 Home Instruction for Sheet Metal Workers B, Fig. 274, and make a square bend on dot b, shown by the sheet C and place it in the brake, A, Fig. 275, andmake a bend on dot a as far as it will go, as indicated by B. Reverse B and place it in the brake in the position B, Fig. 276,where, in forcing B to close the brake on dot b, t
Home instruction for sheet metal workers . d on dot d, Fig. 272, and a bendmade to the required angle, as shown by A. The sheet is nowreversed in the brake, A, Fig. 273, and the proper angle bent ondot c, shown by B. Again reversing B, place it in the brake, 200 Home Instruction for Sheet Metal Workers B, Fig. 274, and make a square bend on dot b, shown by the sheet C and place it in the brake, A, Fig. 275, andmake a bend on dot a as far as it will go, as indicated by B. Reverse B and place it in the brake in the position B, Fig. 276,where, in forcing B to close the brake on dot b, the lower partof B will strike the bending leaf at 1, thereby causing a slightcurve at 2, which will spring out again when a square bend ismade on dot b, shown by C. The bar is now reversed, A, Fig. 277,the brake closed on dot c, and a bend made to the angle B. Again reverse B, Fig. 278, and make the proper bend on dot d,shown by C. Draw out sheet C and close brake on dot c, C, , and make a bend to the angle shown by D. Now open the. Fig. 270 Figs. 266-67-68-69-70. Bending Operations in Forming Lower Curb on Brake. jaws of the brake as wide as possible and insert the angle a,shown by D a, Fig. 280. Close the brake firmly, causing the twocondensation gutters 1 and 2 to spring together tightly at b. The student is cautioned to be very careful to have each andevery bend formed exactly on the dot and to its true angle, other-wise the result will be different from that shown by E. The last part to be bent is the cross bar or clip shown in sectionby D, Fig. 252. In Fig. 281, B shows the only angle or stay re-quired. Start this cross bar by placing sheet /; / in the brake andmake a square bend on dot i, shown by A. Leaving the sheet inthe brake, draw it outward and close the top clamp on dot /,Fig. 282, and make a square bend. In making this square bend Construction of Flat Skylight 201 the edge h is forced against the top clamp at a and presses theright angle i out of s
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
