TM 31-210
Improvised Munitions Handbook
| Section VII |
No. 1 |
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CLOTHESPIN SWITCH |
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| A spring type clothespin is used to make a circuit closing switch to actuate explosive charges, mines, booby traps and alarm systems. | |
| MATERIALS REQUIRED: | |
| Spring type clothespin. | |
| Solid copper wire - 1/16 in. (2 mm) in diameter. | |
| Strong string on wire. | |
| Flat piece of wood (roughly 1/8" by 1" x 2"). | |
| Knife. | |
| PROCEDURE: | |
| 1. Strip four in. (10 cm) of insulation from the ends of 2 solid copper wires. Scrape copper wires with pocket knife until metal is shiny. |
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| 2. Wind one scraped wire tightly on one jaw of the clothespin, and the other wire on the other jaw. |
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| 3. Make a hole in one end of the flat piece of wood using a knife, heated nail or drill. Tie strong string or wire through the hole. |
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| 4. Place flat piece of wood between jawy os the clothespin switch. |
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| Basic Firing Circuit | |
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| When the flat piece of wood is removed by pulling the string, the jaws of the clothespin will close completing the circuit. | |
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CAUTION: Do not attach the batter until the switch and trop wire have been emplaced and examined. Be sure the flat piece of weed is separating the jaws of the switch. |
| A Method of Use | |
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