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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 (14576965607)

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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 (14576965607)

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Identifier: sheetmetalworker00broe (find matches)
Title: 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
Year: 1918 (1910s)
Authors: Broemel, L. (Louis), b. 1885 Daugherty, James S. (James Sharkey), b. 1866
Subjects: Sheet-metal work
Publisher: Chicago, Drake
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress



Text Appearing Before Image:
Figure 83.—Burritts Patent Cross Lock Seamer. The first pair of common gauge seamers start the seamin operations shown in Figures 86 and 87. Figure 84.—Roofing Edges Turned, Ready for Double Seam. For the finishing operation the second pair of roofingdouble seamers in the set are used, completing the seamin operations shown in Figures 88 and 89, and thus finish-ing a standing seam % inch high. SHEZST METAL WORKING MACHINERY 123 The wide gauge roofing double seamers, which followthe l1/^ and 1^-inch regular roofing tongs, are used the
Text Appearing After Image:
Figure 85.—Burritts Patent Roofing Double Seamers. same as the common gauge seamers, but finish a standingseam 1 inch high. 124 SHEET METAL WORKERS MANUAL The finished standing seam joint is illustrated in Fig-ure 90, which also shows the method of attaching the tin 1 Figure 86.—First Operation inDouble Seaming. Fig, 87.—Second Operation. 1 Figure 88.—Third Operation. 5 Figure 89.—Completing the Seam. roof to the roofing boards by means of the cleat. Thiscleat is so arranged that the nail heads do not come incontact with the tin roof itself. Note how the various ^Nciils Engage Lower Fold of

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