112. Nipolite Pressure-Release Antilifting Device

a. Description. The Nipolite-pressure-release antilifting device (fig. 139) consists of a main charge of two rectangular blocks of molded Nipolite explosive, held together by two brass bolts. This antilifting device is 3 7/8 inches long, 2 inches wide, and 1 1/8 inches high. Recesses in the inner surfarce of the blocks contain a spring-loaded striker, a stri-ker-release lever, a percussion-cap-and-detonator assembly, and two safety pins. The percussion-cap-and-detonator assembly fits into a hole at one end of a threaded Nipolite plug which screws into the threaded hole at one end of the antilifting device. The Nipo-lite plug acts as a booster charge. The total weight of the antilifting device is 9.5 oun-ces.

b. Employment. This pressure-release antilifting device is employed as an activating de-vice for antitank mines as well as a main charge for booby traps.

c. Functioning.

(1)

Lifting the weight from the striker-release lever allows the spring-loaded striker to pivot the lever arm until the striker is released.

(2)

The released striker fires the percussion-cap-and-detonator assembly, which explo-des the plug and the main charge.

d. Installing and Arming.

(1)

Insert a percussion-cap-and-detonator assembly, detonator end first, into the end of a threaded Nipolite plug and screw the plug into the threaded hole in the antilift-ing device.

(2)

Place the antilifting device under the object to be booby trapped and pull out the safety pins. Always pull out the upper safety pin before the lower safety pin.

e. Neutralizing.

(1)

Insert a strong wire or nail through the lower safety-pin hole.

(2)

Unscrew the Nipolite plug and remove the percussion-cap-and-detonator assembly from it.

Note. If the antilifting device cannot be neutralized without desturbing its position, or if the lower safety-pin hole is not accessible, it should be destroyed in place. See also paragraph 109b.

Figure 139. Nipolite pressure-release antilifting device.