. 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 . d one flattening roll, oncompletion of its run over the seam in the work is quicklyand easily returned to the starting point, by releasing thelever A and pushing the traveling carriage back by adjustable stop B on the upper bar stops the trav-eling carriage at any desired point to suit the length ofthe work to be grooved. The adjustable stop C on thelower bar prevents the work from slippin
. 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 . d one flattening roll, oncompletion of its run over the seam in the work is quicklyand easily returned to the starting point, by releasing thelever A and pushing the traveling carriage back by adjustable stop B on the upper bar stops the trav-eling carriage at any desired point to suit the length ofthe work to be grooved. The adjustable stop C on thelower bar prevents the work from slipping during theprocess of grooving. A latch connects and holds securethe upper bar and the grooving horn. This latch is thrownback before the work can be inserted in the machine. SHEET METAL WOTCKTNG MACHINERY 81 When the work is properly placed over the grooving hornthe latch is closed, preventing any spring of the groovinghorn while the traveling carriage passes over the seam. The grooving horn is reversible and is made with aseries of planed grooves and a flat surface. When it isdesired that the seam or groove appear on the outside ofthe work (see Figure 41), the flat surface of the grooving. Upper Bar TravelingCarriage \
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Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
