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 (14576703140)

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 63.—Crimping Machine. machine shown in Figure 61, but in this machine thebeading rolls are not used and the crimping rolls areattached to their arbors in a manner that leaves the endsor faces of the crimping rolls flat or flush. They are thusadapted for crimping close up to a bend or angle as incornice work, etc., and are constructed for crimping only.Heavy Crimping and Beading.—Figure 64 shows aneavy crimping and beading machine. A similar machineis manufactured and constructed for crimping only, withthe crimping rolls attached to their arbors flush, asdescribed under Figure 63. The improvement describedunder Figure 61, consisting of a wedge found betweenthe rear bearings in the frame, providing an adjustmentfor regulating the relative depth of crimp and bead, areincluded in the heavy crimping and beading machine,Figure 64. SHEET METAL WORKING MACHINERY 101
Text Appearing After Image:
Figure 64.—Heavy Crimping and Beading Machine—Power Drive. 102 SHEET METAL WORKERS MANUAL This machine has a ratio of gearing 414 to 1, and willmake an impression of a crimp and ogee bead in sheetmetal 18 gauge iron and lighter (U. S. Standard). Therolls are large, measuring 2;; inches in diameter. Afriction clutch operated by means of a foot treadle andspring affords the operator full control of the machine,as well as of the work in progress. A depression of thefoot treadle starts the machine and when not depressed