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Publication numberUS3320881 A
Publication typeGrant
Publication dateMay 23, 1967
Filing dateJan 19, 1965
Priority dateJan 19, 1965
Publication numberUS 3320881 A, US 3320881A, US-A-3320881, US3320881 A, US3320881A
InventorsBrett Nicholas W, Crabtree Royale R
Original AssigneeBrett Nicholas W, Crabtree Royale R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cable munition
US 3320881 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

y 1967 N. w. BRETT ETAL 3,320,881

CABLE MUNITION Filed Jan. 19. 1965 INVENTOR-S NICHOLAS W. BRETT ROYALE R. CRABTREE .W g MBM ATTORNEYS United States Patent 3,320,881 CABLE MUNITION Nicholas W. Brett, Baltimore, and Royale R. Crabtree, Towson, Md, assignors to the United States of America as represented by the Secretary of the Army Filed Jan. 19, 1965, Ser. No. 426,698 3 Claims. (Cl. 10223) The invention described herein may be manufactured and used by or for the Government for governmental purpose-s, without the payment to us of any royalty thereon.

This invention is a method of achieving an extended line source of a chemical agent cloud or aerosol.

The principal object of this invention is to provide a cable containing a lethal capability that is appreciably reduced in weight to permit an increase in the payload of chemical agent.

It is a further object to make this cable of extreme length and arranged so that it may be dispensed lengthwise at the target area from a moving conveyance preferably trom the air.

It is another object to provide a light flexible covering for the cable so that it may be coiled on reels and readily dispensed.

The invention will be better understood by reference to the drawings in which:

FIGURE 1 is a diagrammatic view of the cable broken in the center to show it may be of an indeterminate length; and

FIGURE 2 is a cross-sectional view taken on line 22 of FIGURE 1.

The cable has a light flexible outside cover 3 that is readily ruptured when ignited from the inside. The Prima Cord or pyro cord 4 is within the cable and extends the full length of the cover 3 and may be located in the center as shown or off-center or even on the outside of the cable cover. The remaining space is filled with the destructive chemical compound 5 which may be in a powdered, granulated, plasticized or liquid form. Attached to the Prima Cord 4 is a fuze 6 which may be attached to one end, if that end of the cable be in close proximity so that a convenient connection may be made or a self-detonating fuze may be attached to both ends it the cable is laid in a remote area. A fuze at both ends has the advantage in that the eflect may not be lessened, by accidentally or otherwise, severing the cable, it will still be initiated and fired from both ends.

Thus, cable munition takes the form of a. thin walled flexible tube containing a chemical agent and a Prima Cord which extends the entire length of the munition. The covering for this munition must also be resistant to the contained chemical agent and strong enough to permit coiling and winding without breakage. Materials such as rubber or polyethylene are excellent and lend themselves to continuous extrusion which is very desirable for efiicient production. It is contemplated that the cable munition when produced will be cut in lengths of 500 or 1000 feet and wound on suitable spools. The Prima Cord or pyro cord is available in various sizes, is considered safe for handling and possesses a good tensile strength which is desirable for this use.

The agent used in this cable munition may be a chemical for smoke, gas, bacteria, fire or high power explosive such as granulated TNT or plasticized explosives. For a pyrotechnic chemical the cable may be filled with napalm, jellied gasoline or a thermite fill.


The cable munition could be laid by hand for perimeter defense or laid at right angles for a complete crosssectional coverage. It also could be laid from truck, jeeps or tanks by unreeling the spools on which the cable is wound. Such action would be initiated to repel an expected attack. It is contemplated that this cable munition may be more readily laid from an air conveyance from which reels of the cable would be suspended and free to unwind, while the reels would be spaced according to the desired pattern. Also after the cables were laid from the air in spaced relation or approximately parallel to each other, another set could be laid at right angles to the first set so that that cross-sectional pattern would provide more complete coverage. Upon initiation the munition will form an unbroken curtain of fire, smoke, toxic or an incapacitating agent for either offensive or defensive tactics. Cables carrying such a chemical agent could be air dropped over bridges, ships or buildings with the contemplation that these objects would be completely and accurately destroyed. Where desirable a pyrotechnic fill would produce, if desired, continuous walls of fire the length of the cable dropped. Such cable could also be employed for riot control without fear of damage due to falling hardware.

The advantages of this weapon are its versatility with respect to both employment and the type of chemical agent utilized. By reducing the hardware, the overall weight is greatly reduced and the resulting increase in efliciency makes it much more desirable as an airborne munition than older types. It is also advantageous that this cable munition may be used as a completely nonlethal riot control weapon by reason of the ease of handling and delivery.

What is claimed is:

1. A cable of indeterminate length comprising a line with a flexible covering adapted to be coiled on a reel and rupturable on detonation, a Prima Cord within said flexible cover extending the full length thereof, a chemical agent with a lethal capability filling the remaining space within the cable, self-detonating fuzes attached to both ends of said Prima Cord to insure complete detonation upon a break in the cable, said cable adapted to be placed in operative position by unreeling from an air or land conveyance and on detonation rupturing the flexible cover to release the lethal chemical agent throughout the entire length of the cable.

2. A method of laying waste to a designated area which comprises laying single strands of explosive cable of indeterminate length having self-detonating fuzes at opposite ends and containing a chemical agent with a lethal capability by unreeling from a conveyance and detonating the explosive cable to insure upon a break in the cable the release of the lethal chemical agent throughout the entire length of the cable.

3. A method of covering a designated target area which comprises, coiling single strands of cable containing a lethal chemical agent having self-detonating fuzes at opposite ends on spools attached to an air conveyance in a spaced relation, laying said strands of cable having a lethal capability across said area in same relation as said spools by unreeling from the air and thereafter detonating the cable at both ends as laid to insure upon a break in the cable the release of the lethal chemical agent throughout the entire length of the cable in the target area.

(References on following page) References Cited by the Examiner UNITED STATES PATENTS Bisch 102--22 P001 10222 DeFino 102*22 Tyson 102--22 X 4 3,114,316 12/ 1963 Littleton 102-22 3,185,090 5/1965 Weber 102-24 Assistant Examiners.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2455354 *Aug 3, 1945Dec 7, 1948James L BischMine destroyer
US2511005 *Sep 28, 1945Jun 13, 1950Pool John EMine clearing snake
US2771841 *Aug 15, 1947Nov 27, 1956De Fino Anthony JBelt line charge
US2812710 *Feb 18, 1953Nov 12, 1957Tyson Harry DDetonating cable
US3114316 *Apr 29, 1953Dec 17, 1963Littleton Leonidas RMine clearing device
US3185090 *Feb 1, 1963May 25, 1965Thiokol Chemical CorpDual shaped charge separation system
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3482637 *Oct 20, 1967Dec 9, 1969Us InteriorProcess and method for quenching incipient gas-air explosions
US3881420 *Jul 13, 1973May 6, 1975Ensign Bickford CoSmoke cord
US4220087 *Nov 20, 1978Sep 2, 1980Explosive Technology, Inc.Linear ignition fuse
US5303653 *Sep 29, 1986Apr 19, 1994The United States Of America As Represented By The Secretary Of The ArmyHigh explosive disseminator for a high explosive air bomb
US5425311 *May 12, 1989Jun 20, 1995The United States Of America As Represented By The Secretary Of The ArmyHybrid warhead
U.S. Classification102/322, 102/365, 102/334, 102/367
International ClassificationF42B3/093, F42B3/00, F41H9/00
Cooperative ClassificationF42B3/093, F41H9/00
European ClassificationF41H9/00, F42B3/093