New. Book is new and unread but may have minor shelf wear. N° de ref. de la librería
Reseña del editor: 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. 1919 Excerpt: ... four light prongs on the end of the charge container. This is done by pounding the prongs in place by means of a hand mallet and former. SAFETY PIN. This is an ordinary cotter pin & of an inch diameter and serves a twofold purpose: one to prevent the accidental driv ing of the firing pin on to the detonating cap, and the other to register correctly the forward movement of the driving pin, so that at no time prior to preparing the mechanism for functioning shall the driving pin have traversed any part of its journey forward through the barrel. DETONATING-CAP PACKING TUBE. The detonating cap is placed in the packing tube and tightly packed in place with cotton wadding so as to thor oughly protect it. After the cap is packed the tube is wrapped in a paper wrapper. DETONATING-CAP PACKING-TUBE WRAPPER. This consists of a paper wrapper, 4 by 6 inches, of 30-pound Kraft stock. Before encircling the packing tube with this 122021--Vol 2--19 10 wrapper, which is pasted on, a string is placed across the packing tube with the end of the cord protruding to facilitate unwrapping. TIE CORD. The entire package is then waterproofed, being dipped in melted parafin and attached to the shaft of the firing mechanism by means of the tie cord. This cord is an ordinary piece of hemp twine about 12 inches long, with two turns around the package. This operation is shown in figure 127. BOXING. The flares are packed two in a tin-lined box and are held firmly by collars made from %-inch pine board formed by cutting a %-inch circle, the same size as the outside of the case, which fits snugly around the case against the carrying bands, one on each end. The collars are bolted firmly together by the aid of cleats extending the full height of the completed box. These cletes aid in hold...
Título: The Manufacture of Military Pyrotechnics ...
Condición del libro: New
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