grill-protected, snap-type diaphragm which is in con-
tact at its center with a spring loaded firing pin which
is housed in a cylindrical projection integral with the
body. The bronze diaphragm is protected by a sheet
rubber diaphragm. A pellet sleeve, which projects
from one side of the device, contains a metal spacer, a
space for a salt delay tablet, and a sleeve plug. Before
installation, the firing pin is restrained in its unfired
position by a steel safety ball which is held in place
against the beveled shoulder of the firing pin by the
metal spacer in the pellet sleeve; the spacer is in turn
held in place by a safety cotter pin. After removal of
the safety cotter pin (air installation), or after the re-
moval of the safety cotter pin and partial dissolution
of the installed salt delay pellet (water installation),
the firing pin is restrained in its unfired position only
by a split firing pin release spring which engages a
groove in the diaphragm end of the firing pin.
(b) Base plug (shipping plug). The base plug is a
metallic plug which is assembled to the firing mechan-
ism during storage and shipment.
(c) Rimed coupling base and blasting cap as-
sembly. This assembly consists of the same type metal
coupling base with installed primer as used with firing
devices but with a blasting cap assembled and sealed to
it.
(d) Salt delay pellets. Two cylindrical, com-
presssed salt delay pellets, one blue for 3 -minute
delay and one yellow for 7 1 minute delay, are
packed with the kit.
(e) Pellet skeve cover assembly. This assembly
consists of a paper tube crimped to a chipboard sleeve
cover with a pull cord. It is assembled over the pellet
sleeve covering the holes in the pellet sleeve in order to
prevent the salt delay pellet from dissolving while the
1
Use when stocks on 10-Cap capacity blasting machine are exhaust-
device is being installed underwater.
ed
2
c. Demolition Sets. The sets are assemblies of
Use when stocks on infantry cap box are exhausted.
3
Use when stocks on blasting galvanometer are exhausted.
demolition explosive items, accessories, and tools
4
Use when stocks of M32 blasting machines are exhausted.
needed to accomplish and initiate almost all demoli-
(b) Components issued sperately. The follow-
tion projects. They are issued according to tables of or-
ing items are required to complete the demolition set
ganization and equipment (TOE).
and should be on hand at all times. These items are not
(1) Demolition equipment set, explosive initiat-
supplied with the set and must be requisitioned sep-
ing, electric and nonelectric (fig. 1-45). The
electric
arately (SC 1375-95CL-A03).
and nonelectric demolition set consists of TNT and
composistion C4 block demolition charges and demoli-
tion accessories and tools necessary for electric and
nonelectric priming and firing. The set includes a
wooden demolition chest for storage end transporta-
1-12 contain information pertaining to items included
in this set. The basic set consists of the items listed (a)
and (b) below.
(a) Components issued with basic set. These
items may be requisitioned separately for replacement
purposes (SC 1375-95-CL-A03).