US3558005A

US3558005A - Aerial chemical dispenser

Info

Publication number: US3558005A
Application number: US773824A
Authority: US
Inventors: Royale R Crabtree; Charles W Beeker; Larry T Shaff; Michael A Mancini; Joseph C Pheil
Original assignee: US Department of Army
Current assignee: US Department of Army
Priority date: 1968-11-06
Filing date: 1968-11-06
Publication date: 1971-01-26
Anticipated expiration: 1988-01-26

Abstract

An aerial chemical dispenser and method of dissemination comprising a dispensing means; a guidance system fixedly attached to the dispensing means; chemical material loaded within container means, said container means having a rupturable bottom and mounted by hanger means within the dispensing means; fallaway door means to rupture the dispensing means bottom; and reliable and reusable electrically activated explosive detent structure for initiating door fallaway.

Description

United States Patent Inventors Royale R. Crabtree Towson; Charles W. Becker, Baltimore; Larry T. Shaff, Bel Air; Michael A. Mancini, Joppa; Joseph C. Pheil, Joppa, Md. Appl. No. 773,824 Filed Nov. 6, 1968 Patented Jan. 26, 1971 I Assignee the United States o fAmerica as Y represented by the Secretary of the Army AERIAL CHEMICAL DISPENSER 33 Claims, 27 Drawing Figs.

US. Cl 221/90, 239/171 Int. Cl G07f 11/06 Field of Search 239/ 171;

[56] References Cited UNITED STATES PATENTS 3,248,074 4/1966 Cannon 239/171X 3,410,489 1 1/1968 Waldrum 239/171 Primary Examiner--Stanley l-l. Tollberg Att0rneys-Harry M. Saragovitz, Edward J. Kelly, Herbert Ber] and Bernard J. Ohlendorf ABSTRACT: An aerial chemical dispenser and method of dissemination comprising a dispensing means; a guidance system fixedly attached to the dispensing means; chemical material loaded within container means; said container means having a rupturable bottom and mounted by hanger means within the dispensing means; fallaway door means to rupture the dispensing means bottom; and reliable and reusable electrically activated explosive detent structure for initiating door fallaway.

PATENTEDJANZiSISII 3,558,005

- SHEET 1 BF 5 INVENTORS Roya/e R. Crab/me Charles W. Beelrer Larry 7T Shaff Michael A. Mancini Joseph C. Phei/ Fig.

ATTORNziYJ PMFNIHIJANFBIFJ/l Y 3 3 5 SHEET 2 [IF 5 4 INVENTORS Roya/e R. Crabfree Char/es M. Beelrer Larry 7'. Shaff Michael A. Mancini n Joseph 6. Phei/ BYa/py 76 7'1. 5 wfw j PATENIEnJA-2s|sn 355 1305 sum u 0F 5 Iv Q N11,.

INVENTORS Roya/e R. Crabfree Charles W. Beaker Larry 7'. Shaft Michael A. Mancini Joseph C. P/Isi/ ,{uvu 7n. 5%

ATTORNEYJ' AERIAL CHEMICAL DISPENSER DEDICATORY CLAUSE The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to me of any royalty thereon.

Our invention relates to an aircraft mounted dispenser for rapid release aerial delivery ofdry solid chemical material, the dispenser having a field assembled guidance system. reusable and reliable electrical explosive detents, and barrier means to avoid premature dissemination of the chemical material.

The need to develop an apparatus and method for effective, efficient, safe, economical and rapid aerial dissemination of dry solid chemical material to contaminate ground areas with high and uniform chemical concentrations has attained a position of great importance militarily and commercially. This need led to the concept and reduction to practice of our invention.

Our dispenser apparatus and method can be utilized to deny personnel the use of ground areas militarily and for domestic riot control as well as commercially for endeavors such as crop dusting and cloud seeding.

A principal object of our invention is to provide an apparatus and method for rapid aerial dispensing of dry solid chemical material.

Another object of our invention is to provide an apparatus and method for rapid aerial dispensing of dry solid chemical material utilizing a field assembled guidance system to provide a logistically attractive package which can be shipped in as compact space as possible and assembled with a minimum number of tools and unskilled labor.

Still another object of our invention is to provide an apparatus and method for rapid aerial dispensing of dry solid chemical material which utilizes a field assembled guidance system and reusable and reliable electrical explosive detents.

A further object of our invention is to provide an apparatus and method for rapid aerial dispensing of dry solid chemical material which utilizes a field assembled guidance system and reusable and reliable electrical explosive detents and which utilizes barrier means to avoid premature dissemination of the dry chemical material and container breather means which enables safe shipping of noxious chemicals.

A still further object of our invention is to provide an apparatus and method for rapid aerial dispensing of dry solid chemical material which utilizes a field assembled guidance system, reusable and reliable electrical explosive detents, and barrier means to avoid premature dissemination of the dry chemical; the apparatus and method being effective, efficient, safe, and economical to operate and providing high and uniform ground chemical contamination.

Other objects will be obvious from or will appear in the specification hereinafter set forth.

FIG. I is a view of our aerial dispenser mounted on a helicopter and shown in the dispensing mode.

FIG. 2 is a view of our aerial dispenser.

FIG. 3 is a view showing the electrical explosive detent for our dispenser and the protective kick plate.

FIG. 4 is a view showing the internal structure of our dispenser.

FIG. 5 is a cutaway end view of our dispenser to show the dispenser bottom door mounting.

FIG. 6 is a view of the protective kick plate.

FIG. 7 is an exploded view of the assembly of the electrical explosive detent within the dispenser wall.

FIG. 8 is an assembled view of the electrical explosive detent.

FIG. 9 is a view showing the detent electrical connector tab and connector wire.

FIG. 10 is a view showing the chemical material fiberboard container mounted within the dispenser.

FIG. 11 is a view through section 11-11 of FIG. 12 showing the chemical material container breather means.

FIG. 12 is a view showing the chemical container cut away and loaded with paper bags containing chemical material and the assembled container with a protective shipping and storing cover.

FIG. 13 is a view showing the chemical material container protective shipping and storing cover.

FIG. 14 is a view of the sequences of the dispenser bottom door fallaway after operation and shearing of the explosive electrical detent.

FIG. 15 is a view showing the reinforced tcar strip means mounted on the chemical material container plastic bottom means and lanyard means attached to the tear strip means.

FIG. [6 is a view through section I6-l6 of FIG. [5 showing the mode of connecting the lanyard means to the tear strip means.

FIG. 17 is a view through section [7-17 of the dispenser bottom fallaway door shown in FIG. 19.

FIG. 18 is a view of the dispenser chemical material container subsequent to the container plastic bottom being torn away by the weight of the bottom door.

FIG. 19 is a view of the resulting configuration of the torn away chemical material container plastic bottom.

FIG. 20 is a view through section 20-20 of the dispenser bottom door shown in FIG. 19.

FIG. 21 is a view of the dispenser guidance means assembled to the dispenser.

' FIG. 22 is a view of one comer of the guidance means shown in FIG. 2! which shows the mode of assembly of the vertical to the horizontal guidance members.

FIG. 23 is a side view of the guidance means shown in FIG. 21.

FIG. 24 is an end view of the guidance means shown in FIG. 21.

FIG. 25 is a view through section 25-25 of FIG. 23 which is illustrative of the assembly of the guidance means covering material on the framework members.

FIG. 26 is a sectional view showing the assembly of the metal grommet means within the guidance means covering material.

FIG. 27 is a view of the stop member integral with the guidance means framework support members.

Our invention and FIGS. 1 to 27 .will now be described in detail as follows.

Our apparatus shown generally at I in FIGS. 1 and 2 comprises a dispensing means 28, guidance system shown generally at 6 in FIG. 2, chemical material container 2, and electrical explosive detent assembly shown generally at 27 in FIGS. 7 and 8. To use and operate our apparatus, a conventional fiberboard container 2 is manufactured having one end open and the other end having a breather means 38 located in the container top 36, as shown in FIGS. 10 and I1. Breather means 38, as shown in FIG. 11, comprises a first nonmetallie 18Xl4 mesh screen means 40 superimposed on and adjacent to hole 39 centrally located in top 36, a first conventional filter paper means 41 superimposed on and adjacent to first screen means 40, a layer of conventional activated charcoal 42 superimposed on and adjacent to the first filter paper means, a second conventional filter paper means 41 superimposed on and adjacent to the activated charcoal layer 42, a second nonmetallic l8 X14 mesh screen means 40 superimposed on and adjacent to the second filter paper means, and conventional adhesive tape means 37 holding all of the breather means elements in place over hold 39. Container 2 is loaded with the chemical material to be disseminated through the bottom open end, the end opposite to top 36, in any suitable form, such as loose material, bagged material in plastic or paper bags, or in any geometrical configuration. As shown in FIG. 12, container 2 is loaded with chemical material contained in bags 45. Fiberboard hanger 66 is stapled to container 2 side 67 adjacent to top 36 for mounting within dispenser means 28, as shown in FIG. 12. After container 2 has been loaded a two mil thick plastic, such as aluminized Mylar, layer 49. as shown in FIG. 18. is stretched across the container open end and held in place by conventional adhesive tape 68. Following the installation of plastic layer 49, cover 43 is placed over the plastic layer and held in place by conventional adhesive tabs 44 for shipping and storing purposes Prior to installing plastic layer 49 on container 2, plastic layer 49 has two tear strips 50 mounted by conventional adhesive tape in an X configuration on the container 2 inside facing of plastic layer 49, as shown in FIG. 15. Each end of each tear strip 50 passes through a slit 85, as shown in FIG. 15, in plastic layer 49 to container 2 outside facing of plastic layer 49. The ends of each tear strip 50 located at

plastic layer

49 and 69 are folded back on the plastic layer 49 outside facing and fixed thereto by conventional adhesive tape, whereas the ends of each tear strip 50 located at plastic layer 49 end 70, after passing through the slits to container 2 plastic layer 49 outside facing, are wrapped around and secured to plastic washer 52 by any conventional means, such as adhesive, as shown in FIG, I6. As shown in FIG. 16, plastic washer 52 has a metal grommet 51 mounted within washer 52 by any conventional means such as adhesive, swaging, etc., and one end of a lanyard extension means 53, such as nylon parachute cord, passes through grommet SI and is secured to avoid pulling through the grommet by any conventional means, such as knot 71. Each lanyard extension means 53 end opposite to the knotted end is integral with a lanyard means 48, such as nylon parachute cord, as shown in FIG. 19. After inserting tear strips 50 ends through the slits, conventional adhesive patches 54 are superimposed on and adjacent to tear strips 50 over each slit on the container 2 in side facing of plastic layer 49, as shown in FIGS. I5 and 16, in order to avoid chemical material from prematurely falling from container 2. Dispensing means 28, as shown in FIG. 4, has a number of vertical, horizontal, and diagonal members fixedly mounted on the inside of the container by any conventional means such as welding, riveting, bolting, etc; the dispensing means and all internal members being made of aluminum. Frame 72, comprising horizontal member 24, vertical member 73, and diagonal member 25 is provided for structural and spacing purposes. Horizontal members 23 and vertical members 22 divide dispensing means 28 into

compartments

74 and 75; compartments 74 being of sufficient size to enclose a single container 2 and compartments 75 being of sufficient size to each enclose two containers 2, as shown in FIG. 10. While the dispensing means, as shown in FIG. 4, is shown to contain nineteen (l9) containers 2, the number is not critical and the number of containers 2 and load balancing is adjustable within the skill of the art. Similarly all dimensions of the dispensing means 28, containers 2, and all cooperating structures are well within the skill of the art to adjust. A removably mounted door 3 is mounted within dispensing means 28 at bottom 76. Door 3 rests at each end by means of notches 78, as shown in FIGS. 17 and 19, on fixedly mounted dummy detent 35 and electrically activated threadably mounted explosive detent 29, as shown in FIG. 5. A door 3, having a lead weight 47 fixedly mounted by bolt or pin means 83 in the end to be mounted on the explosive detent, is provided for each container 2 and has the same width and length as the container 2 top and bottom, and a dummy detent 35 and explosive detent 29 is provided for each door 3. A series of threaded holes 80 are constructed in the dispensing means 28 sidewall 77 section 34 for mounting conventional explosive detents 29, as shown in FIGS. 4, 7, and 9. Electrical insulating member 30 having a centrally located hole 32 is mounted by any conventional adhesive material on wall 77 having hole 32 superimposed over hole 80. Electrical connector member 79 is similarly mounted by any conventional adhesive material within insulating member 30. Detent 29 is then threadably inserted in hole 80, so as to protrude through hole 32, and is electrically connected to connector 79 in the conventional manner, such as by soldering; the assembly is shown in FIGS. 7 and 9. After assembly of the electrical detents 29, lead wires 33 are electrically connected to tabs 31 of connector 79 of each detent 29 in the conventional manner, such as by soldering and wires 33 are brought to conventional intervalometer I8 through conduit I9; conduit I9 being held in position against dispensing means 28 by conduit support 20. Each lead wire 33 is connected to a separate contact of the sequencing unit, not shown in the drawing, on the output side of inter valometer l8; and plug 82, connected to intervalometcr I8 input side, is connected to grounding plug 16 by conventional male-female electrical connectors during storage and shipping. When electrical connections have been completed. kick plate 4 is inserted under clips 5, over end plates 26. and held in place by screws 21, as shown in FIGS. 3 and 4; screws 21 being mounted in threaded holds 81. Kick plate 4 serves-to prevent damage to the electrical connections and detents 29, insulator 30, and connector 79. When material is to be disseminated, the aerodynamic guidance system shown generally at 6 in FIG. 2 is assembled to dispensing means 28 in the field. Guidance system 6 assembly is accomplished by attaching aluminum tail support members 56 to dispensing means 28 flange 59 by bolt means 60, as shown in FIGS. 21 and 23, to provide flight stability. Horizontal'canvas panels 7 and vertical canvas panels 8 are mounted on support members 63 by slipping the looped ends of the canvas (SI of

panels

7 and 8 over the support members, as shown as illustrative in FIG. 25.

Assembled panels

7 and 8 are connected to support members 56 by inserting support members 63 to stop flange 64, under tension, within holes provided in support members 56, as shown in FIGS. 24 and 27. Guidance system 6 is secured together by threadably connecting horizontal extension members and vertical extension members (not shown in the drawing) to support members 63. Canvas 6! is then assembled on the extension members to form

panels

65 and 84 in the above described manner and as shown in FIG. 25. All panels are secured together by wire or nylon parachute cord means 9, as shown in FIGS. 21, 22, and 24, inserted through grommet means 62 assembled in the conventional mode to canvas 61, as shown in FIG. 26. Upon completion of the assembly of guidance system 6, cover means 43 is removed from container 2; lanyard means 48 is inserted through rubber grommet 57 mounted in door 3 in the conventional manner and tied to washer 55 to avoid lanyard means 48 from pulling out of grommet 57, as shown in FIGS. 19 and 20; containers 2 are inserted in

compartments

74 and 75 by placing hangers 66 over horizontal member 23, as shown in FIG. 12', cover means 46 is secured to dispensing means 28 by bolt means; cables 12 are attached to dispenser means 28 hooks I5; cables 12 are secured to pickup ring 14; and pickup ring 14 is secured to clevis 13 which is suspended from nylon sling 10 attached to an aircraft, such as the helicopter as shown in FIG. 1. After dispenser apparatus I has been mechanically connected to the aircraft as described above, it is electrically connected to the aircraft power supply through a switching means, not shown in the drawing, by disconnecting electrical connector 82 from grounding connector l6; mounting connector 82 in support 58 in the conventional manner, such as by friction fit; and connector 82 is electrically connected to aircraft plug connector 17 by the conventional male-female connection mode. Electrical energy is supplied to intervalometer 18 to activate the conventional sequencing unit thereof from the aircraft power supply through electrical wire 11 when a conventional switching means is manually activated within the aircraft. The switching means may be operated to drop all or any portion of containers 3 loaded in dispensing means 28. When all mechanical and electrical connections are completed, dispensing apparatus l is lifted into the air by the aircraft and transported to the target area where the switching means is activated. Upon activation of the switching means within the aircraft, explosive detents are detonated in sequence as long as the switching means remains activated; which causes the explosive detents to shear and door 3 to fall and swing free at the lead weight 47 explosive detent door end, as shown in FIG. 14. As door 3 falls down and away from dispensing means 28, lanyard means 48 is placed under tension which causes tear strips 50 to rip open the plastic layer 49 in the configuration shown in FIG. 18; material loaded in containers 2 then falls free to contaminate the desired area, as shown in FIG. 1. While a single dispensing means 28 is shown being transported in the drawing, a plurality of dispensing means can be transported by bolting them together with aluminum l beams.

It is obvious that other modifications can be made of our invention, and we desire to be limited only by the scope of the appended claims.

We claim:

1. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to 'aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said dispensing means being an aluminum box divided into a plurality of compartments by a plurality of horizontal and vertical members, said horizontal members being adapted to suspend said container means within said compartments.

2. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said guidance system means being fixedly attached to the dispensing means by bolt means connecting four flange members integral with said dispensing means to four tail support members connected to said guidance system means, said flange members being located on the outside and at the top and bottom of each sidewall of the dispensing means.

3. The chemical dispenser of claim 1 wherein said box is of rectangular configuration and contains 19 compartments.

4. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said container means being fiberboard and having a fiberboard hanger means stapled to the back thereof, said hanger means being adapted to suspend a container means within each dispensing means compartment from each compartment horizontal member.

5. The chemical dispenser of claim 2 wherein the guidance system comprises a pair of horizontal panels, each horizontal panel being mounted on a pair of aluminum horizontal support members; a pair of vertical panels, each vertical panel being mounted on a pair of aluminum vertical support members; two pairs of horizontal extension panels, each horizontal extension panel being mounted on a pair of horizontal extension support members; and a pair of vertical extension panels, each vertical extension panel being mounted on a pair of vertical extension support members.

6. The chemical dispenser of claim 5 wherein each panel is canvas.

7. The chemical dispenser of claim 5 wherein each end of each horizontal and vertical support member is inserted in aligned holes in the tail support members at a predetermined distance from the dispensing means, the horizontal and vertical support members being held under tension by the tail support members.

8. The chemical dispenser ofclaim 5 wherein each horizontal and vertical extension support member is threadably connected to the horizontal and vertical support members; the extension support member being inserted in a hole in the tail support member to accomplish said threadable connection.

9. The chemical dispenser of claim 8 wherein a plurality of securing means pass through grommet means mounted in the canvas of each panel adjacent to the right angle formed by intersecting guidance system panels. said securing means encircling the respective tail support member.

l0. The chemical dispenser of claim 9 wherein the securing means is selected from the group consisting of wire meansand nylon cord means.

11. The chemical dispenser of claim 9 wherein the securing means is nylon cord.

12. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported'to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said container means having plastic bottom. said bottom having two tear strips mounted on the bottom inside facing and the ends thereof passing through slits in the bottom to the outside facing; an adhesive patch being superimposed on each slit and tear strip therethrough and attached to the plastic bottom inside facing, said patch being adapted to avoid premature loss of the chemical material from the container means.

13. The chemical dispenser of claim 4 wherein said container has a hole centrally located in the container top and breather means superimposed over said hole.

14. The chemical dispenser of claim 13 wherein said breather means comprises a first screen means superimposed on and adjacent to said hole, a first filter paper means superimposed on and adjacent to said first screen means, an activated charcoal layer means superimposed on and adjacent to said first filter paper means, a second filter paper means superimposed on and adjacent to said charcoal layer means, a second screen means superimposed on and adjacent to said second filter paper means, and adhesive tape means superimposed on and adjacent to said second screen means to hold the breather means in position over the container top'hole; said adhesive tape means having a hole therein in alignment with said container top hole.

15. The chemical dispenser of claim 14 wherein said first and second screen means are nonmetallic l8 Xl4 mesh screens.

16. The chemical dispenser of claim 12 wherein said plastic bottom is two mils thick and said tear strips are mounted by adhesive tape to the plastic bottom inside facing in an X configuration.

17. The chemical dispenser of claim 12 wherein a pair of adjacent ends of the tear strips are folded back on the plastic bottom and secured thereto by adhesive tape after passing through the slits.

18. The chemical dispenser of claim 17 wherein the adjacent ends of the tear strips opposite to the adjacent folded back ends are each wrapped around and adhesively secured to a plastic washer means after passing through the slits.

19. The chemical dispenser of claim 18 wherein a metal grommet means is fixedly mounted within the plastic washer means.

20. The chemical dispenser of claim 19 wherein a lanyard extension means passes through each metal grommet means, a knot being made in the lanyard extension means between the plastic washer means and the plastic bottom outside facing.

21. The chemical dispenser of claim 20 wherein each lanyard extension means is nylon cord and each end of the lanyard extension means opposite to the knot being integral with a nylon lanyard means, said lanyard means being adapted to fixedly connect to a removably mounted door means.

22. The chemical dispenser of claim 21 wherein the lanyard means is connected to the door means by passing the lanyard means through a rubber grommet means mounted in the door means top and tying the lanyard means to a washer means on the door means underside, the washer means being adapted to prevent the lanyard means from pulling back through the grommet means.

23. The chemical dispenser of claim 21 wherein a door means is mounted within each dispensing means compartment, a door means being provided for each container means.

24. The chemical dispenser of claim 23 wherein the door means has the same length and width as the container top and bottom length and width. each door means being mounted on two detents mounted in the dispensing means sidewalls by means of a notch means in each end of the door maintaining each detent therein.

25. The chemical dispenser of claim 24 wherein one detent is a fixedly mounted dummy detent threadably mounted electrically actuated explosive detent, said explosive detent being adapted to shear when exploded and permit the door means to fall away from the dispensing means.

26. The chemical dispenser of claim 25 having a lead weight fixedly mounted by pin means in the door means over the ex plosive detent notched end, said lead weight being adapted to insure the door fallaway.

27. The chemical dispenser of claim 25 wherein each explosive detent protrudes through the dispensing means sidewall and through an electrical insulating means adhesively mounted on the outer surface of the dispensing means sidewall, said explosive detent being electrically connected to an electric connector means adhesively mounted within the electrical insulating means.

28. The chemical dispenser of claim 27 wherein a first electric lead wire enclosed in a conduit means is electrically connected to a tab means integral with the electric connector means at one end and a sequencing unit of the output side of an intervalometer means at the other end.

29. The chemical dispenser of claim 28 wherein a second electric lead wire has one end connected to the intervalometer input side and the other end electrically connected to an electric plug means, said electric plug means being adapted to connect to a grounding plug means during shipping and storage and adapted to connect to an aircraft plug means during transport of the dispenser to the target area.

30. The chemical dispenser of claim 29 wherein the aircraft plug means is connected to one end of a third electric lead wire and the other end of the third electric lead wire is electrically connected to the aircraft power supply through a switching means.

31. The chemical dispenser of claim 27 wherein an elongated kick plate means is disposed against the dispensing means sidewall to enclose each electric connector means, said kick plate means being adapted to avoid damage to the electrical connection means.

32. A method of aerial dissemination of chemical material from a field site to contaminate a given area comprising the steps of providing a dispensing means divided into a plurality of compartments by a plurality of horizontal and vertical members, a chemical material container means loaded with chemical material and having a breather means mounted in the container top and a cover means protected plastic bottom,

and an unassembled guidance system means; shipping said dispensing means, said container means, and said guidance system as an integral compact package to the field site for dissemination of the chemical material; unpacking the compact package at the field site; removing the cover means from the container means plastic bottom; attaching one end ola lanyard means to a door means. the opposite lanyard means end being connected to a tear strip means mounted by adhesive tape on the plastic bottom inner face; mounting each door means within the dispensing means compartments on two detents mounted in the dispensing means sidewalls. one detent being an electrically activated explosive detcnt, said door being held in place on the detents by a notch in each end of the door; suspending each container means within the dispensing means compartments from the dispensing means compartment horizontal members by means of hanger means mounted on the container means; bolting a cover means on said dispensing means; bolting four tail support members to four dispensing means flange members integral with and located at the top and bottom of each dispensing means sidewall; inserting vertical and horizontal support members through loops in each side of each vertical and horizontal canvas panel to assemble the guidance system panels; inserting the horizontal and vertical support members of the assembled panels in aligned holds mounted in the tail support members; threading vertical and horizontal extension support members into the vertical and horizontal support members from the side of the tail support members opposite to that in which the horizontal and vertical support members are inserted, the threading being adapted to secure the guidance system support members together; mounting canvas panels on the horizontal and vertical extension support members by means of loops provided in each side of each canvas panel; tying each canvas panel to each tail support member by nylon cord means; attaching the assembled apparatus to the underside of an aircraft by cable means; disconnecting an electric plug means from a grounding plug means, said electric plug means being electrically connected to an electric wire which has the other end connected to an intervalometer sequencing means, said sequencing means being electrically connected to each explosive detent by wire means; connecting the electric plug means to an aircraft plug means, the aircraft plug means being electrically connected to an electric wire means which is electrically connected to the aircraft power supply through a switching means; lifting the assembled dispensing means into the air by the aircraft means; transporting the lifted dispensing means to the target area by the aircraft means; activating the switching means over the target area resulting in the explosive detents being exploded and sheared, the door means falling away from the dispensing means and placing the lanyard means under tension, the lanyard means under tension by the door weight tearing the plastic bottom out of the container means by the tear strip means, and chemical material falling from the container means; and disseminating the falling chemical material over the target area.

33. The method of claim 32 wherein a plurality of dispensing means are bolted together by l beam means and delivered together to the target area.

Claims

1. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said dispensing means being an aluminum box divided into a plurality of compartments by a plurality of horizontal and vertical members, said horizontal members being adapted to suspend said container means within said compartments.

6. The chemical dispenser of claim 5 wherein each panel is canvas.

8. The chemical dispenser of claim 5 wherein each horizontal and vertical extension support member is threadably connected to the horizontal and vertical support members; the extension support member being inserted in a hole in the tail support member to accomplish said threadable connection.

9. The chemical dispenser of claim 8 wherein a plurality of securing means pass through grommet means mounted in the canvas of each panel adjacent to the right angle formed by intersecting guidance system panels, said securing means encircling the respective tail support member.

10. The chemical dispenser of claim 9 wherein the securing means is selected from the group consisting of wire means and nylon cord means.

11. The chemical dispenser of claim 9 wherein the securing means is nylon cord.

12. An aerial chemical dispenser adapted to be suspended from an aircraft means and transported to a target area to disseminate chemical material to contaminate a given area comprising a dispensing means, guidance system means adapted to be attached to said dispensing means to aerodynamically control the flight of the dispensing means, container means adapted to be disposed within said dispensing means and adapted to contain chemical material, and means adapted to release chemical material from said container means; said container means having plastic bottom, said bottom having two tear strips mounted on the bottom inside facing and the ends thereof passing through slits in the bottom to the outside facing; an adhesive patch being superimposed on each slit and tear strip therethrough and attached to the plastic bottom inside facing, said patch being adapted to avoid premature loss of the chemical material from the container means.

14. The chemical dispenser of claim 13 wherein said breather means comprises a first screen means superimposed on and adjacent to said hole, a first filter paper means superimposed on and adjacent to said first screen means, an activated charcoal layer means superimposed on and adjacent to said first filter paper means, a second filter paper means superimposed on and adjacent to said charcoal layer means, a second screen means superimposed on and adjacent to said second filter paper means, and adhesive tape means superimposed on and adjacent to said second screen means to hold the breather means in position over the container top hole; said adhesive tApe means having a hole therein in alignment with said container top hole.

15. The chemical dispenser of claim 14 wherein said first and second screen means are nonmetallic 18 X 14 mesh screens.

24. The chemical dispenser of claim 23 wherein the door means has the same length and width as the container top and bottom length and width, each door means being mounted on two detents mounted in the dispensing means sidewalls by means of a notch means in each end of the door maintaining each detent therein.

26. The chemical dispenser of claim 25 having a lead weight fixedly mounted by pin means in the door means over the explosive detent notched end, said lead weight being adapted to insure the door fallaway.

32. A method of aerial dissemination of chemical material from a field site to contaminate a given area comprising the steps of providing a dispensing means divided into a plurality of compartments by a plurality of horizontal and vertical members, a chemical material container means loaded with chemical material and having a breather means mounted in the container top and a cover means protected plastic bottom, and an unassembled guidance system means; shipping said dispensing means, said container means, and said guidance system as an integral compact package to the field site for dissemination of the chemical material; unpacking the compact package at the field site; removing the cover means from the container means plastic bottom; attaching one end of a lanyard means to a door means, the opposite lanyard means end being connected to a tear strip means mounted by adhesive tape on the plastic bottom inner face; mounting each door means within the dispensing means compartments on two detents mounted in the dispensing means sidewalls, one detent being an electrically activated explosive detent, said door being held in place on the detents by a notch in each end of the door; suspending each container means within the dispensing means compartments from the dispensing means compartment horizontal members by means of hanger means mounted on the container means; bolting a cover means on said dispensing means; bolting four tail support members to four dispensing means flange members integral with and located at the top and bottom of each dispensing means sidewall; inserting vertical and horizontal support members through loops in each side of each vertical and horizontal canvas panel to assemble the guidance system panels; inserting the horizontal and vertical support members of the assembled panels in aligned holds mounted in the tail support members; threading vertical and horizontal extension support members into the vertical and horizontal support members from the side of the tail support members opposite to that in which the horizontal and vertical support members are inserted, the threading being adapted to secure the guidance system support members together; mounting canvas panels on the horizontal and vertical extension support members by means of loops provided in each side of each canvas panel; tying each canvas panel to each tail support member by nylon cord means; attaching the assembled apparatus to the underside of an aircraft by cable means; disconnecting an electric plug means from a grounding plug means, said electric plug means being electrically connected to an electric wire which has the other end connected to an intervalometer sequencing means, said sequencing means being electrically connected to each explosive detent by wire means; connecting the electric plug means to an aircraft plug means, the aircraft plug means being electrically connected to an electric wire means which is electrically connected to the aircraft power supply through a switching means; lifting the assembled dispensing means into the air by the aircraft means; transporting the lifted dispensing means to the target area by the aircraft means; activating the switching means over the target area resulting in the explosive detents being exploded and sheared, the door means falling away from the dispensing means and placing the lanyard means under tension, the lanyard means under tension by the door weight tearing the plastic bottom out of the container means by the tear strip means, and chemical material falling from the container means; and disseminating the falling chemical material over the target area.

33. The method of claim 32 wherein a plurality of dispensing means are bolted together by I beam means and delivered together to the target area.