. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Eccentrics Figure 27.—Combination Brake and Folder. sizes and capacities, 96 inches being the size most com-monly used in cornice work practice. Combination Brake and Folder.—In principle the com-bination brake and folder (Figure 27) resembles the cor-nice brake, but is constructed for forming locks witha radius sufficient for receiving a wire. Its further prac- 64 SHEET METAL WORKERS MANUAL ticabi
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . Eccentrics Figure 27.—Combination Brake and Folder. sizes and capacities, 96 inches being the size most com-monly used in cornice work practice. Combination Brake and Folder.—In principle the com-bination brake and folder (Figure 27) resembles the cor-nice brake, but is constructed for forming locks witha radius sufficient for receiving a wire. Its further prac- 64 SHEET METAL WORKERS MANUAL ticability extends as far as that of the regular cornicebrake in forming sharp locks, angles, circular and semi-circular bends, etc. In operation the combination brake and folder differs Clamping Bar folding Bladen. Figure 28.—End View of Combination Brake and Polder. from the cornice brake (Figure 24) in that the clampingbar is brought down on the material and securely clampedthrough eccentrics actuated by hand levers from eitherend of the machine. In this more modern brake this ar- SHEET METAL WORKING MACHINERY ar- rangement represents a one-man feature, making th&changing of positions for the clamping of the work unnec-essary, a feature of individuality not to be found in anyother brake. Adjustments are provided for in the eccentric con-nection, permitting a maximum pressure to bear on thematerial in the machine while in the process of forming,thus preventing the work slipping from a true line. Thisadjustment is secured through loosening the top nut Aand tightening the lower nut B for heavy stock, and when lighter materials are used. The bending;plate marked E is adjusted by means of a suitable wrenchprovided with the machine, and may be raised or lowered:for the purpose of f
Size: 1469px × 1700px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
