. Clearing land of stumps. Clearing of land; Explosives in agriculture. In other words, when making the hole for Position of the cap in the explosive, make it with as Cap in Stick long a slant down toward the other end ot the stick as possible. There are reasons for this connected with superior or inferior detonation. Another style of priming much used is to set the cap in a hole made in the end of the stick of explosive, and then to tie the paper about the fuse or wires. This is good so long as it is not damaged, but experience shows that the tamping stick often bends the fuse over sharply wh
. Clearing land of stumps. Clearing of land; Explosives in agriculture. In other words, when making the hole for Position of the cap in the explosive, make it with as Cap in Stick long a slant down toward the other end ot the stick as possible. There are reasons for this connected with superior or inferior detonation. Another style of priming much used is to set the cap in a hole made in the end of the stick of explosive, and then to tie the paper about the fuse or wires. This is good so long as it is not damaged, but experience shows that the tamping stick often bends the fuse over sharply when the primed stick is pressed into the hole and sometimes even interferes with the cap itself. With side priming there is a cushion of the soft explosive between the end of the stick and cap. End priming always is good provided sufficient care is taken in loading to prevent disturbing or displac- ing the fuse or cap with tamping rod. When all the explosive is removed from its stick wrappings, the cap must be inserted in the loose explo- sive Thi; should be done by making a hole, as in a stick But it seldom pays to take all the explosive out of stick wrappmgs. Nearly always you can leave a half stick of explosive intact for the Bad priming. A good crimp. Making Hole in Explosive To make the hole for the cap use the handle o the cap cnmper or a wooden punch just a little larger than the cap. The hole should be large enough to let the cap in without much pressing, but should leave no air space about the cap. The depth of the hole also is im- portant. It should be just enough so that the entire cap can be buried in the explosive, but not any deeper. It it is deeper, the cap may be forced on down to the bottom, which will leave some of the fuse in contact with the explosive (may cause burning instead of exploding of powder), or the cap may be seated just inside the wrapping, leaving an air space at the inside end or bottom ot the hole, which may lower the effectiveness of the
Size: 1081px × 2311px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectexplosi, bookyear1917
