This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...and if inoh thick, to form jaw at A, Figs. 123 and 124. Draw down the other end to inch diameter to form handle B. Square the ends, centre and drill up, and turn to dimensions shown in Figs. 123 and 124, and polish. Line out the end A as shown, and chip and file to dimensions. Line out hole and jaw for ratchet-wheel, ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...and if inoh thick, to form jaw at A, Figs. 123 and 124. Draw down the other end to inch diameter to form handle B. Square the ends, centre and drill up, and turn to dimensions shown in Figs. 123 and 124, and polish. Line out the end A as shown, and chip and file to dimensions. Line out hole and jaw for ratchet-wheel, and cut out metal of same with drills and files, cutters or planing machine, to dimensions sho.vn in Figs. 123 and 124. Take a piece of iron i inch diameter, and 2 inches long, square the ends, centre, and drill from each end right through with inch tapping drill for square thread. Turn the outside to dimensions shown, to form the nut C, Figs. 131, 132, and 133, and line out hexagon. File the hexagon down to the scribed lines. Chuck the hexagon to run true in a universal or bell chuck, and chamber the hole with a boring tool as shown in section, Fig. 132. Place the hexagon in a vice, and tap the two ends of the hole; one with inch vee thread bolt taps, and the other with inch square thread taps, using taper, second, and plug taps in succession. Take care not to break the square thread tap in the hole, nor screw the vee thread hole with it, and tap the holes with parallel threads, not smaller at the bottom ends. Take a piece of iron 1 inch diameter, 4 inches long, square the ends, centre, drill up and counter-sink, and drill the end of D, Fig. 135, with a f inch diameter drill, to a depth of 1 inch. Turn to dimensions and square out hole as shown, with cross-cut or diamond point chisels and files, or a drift, and polish. Screw the other end in the lathe, as in Lesson XXX. to fit the square threaded hole previously tapped in C, Fig. 132, without end or side shake. Fit and recess into D at J, a steel feather inch square and XV inch long; drilling ...
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Add this copy of Forty Lessons in Engineering Workshop Practice to cart. $54.95, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2019 by Wentworth Press.
