US2183540A

US2183540A - Target towing device

Info

Publication number: US2183540A
Application number: US246786A
Authority: US
Inventors: Dwayne H Campbell; Harold H England
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-12-20
Filing date: 1938-12-20
Publication date: 1939-12-19
Anticipated expiration: 1956-12-19

Description

Dec. 19, 1939. I D. H. CAMPBELL Er AL TARGET TOWING DEVICE Filed nec. 2o, 1938 Dec. 19, 1939.

D. H. CAMPBELL ET AL TARGET TowING DEVICE Filed nec. 2o, 1938 2 Sheets-Sheet 2 INVENTORS DW-gne H. ampbell BY H. Blf-@10m ATTORNEY `Patented Dec. 19x, 1939 ATENT oFFIE TARGET 'roWINcfv DEvIcE Dwayne H. campbell and Harold H. England, United States Navy y Application December 20, 1938, Serial No. 246,786

7 Claims.

(Granted under the act of March s, 188s.y as

amended April 30, 192,8; 370 0. G. 757') 'I his invention relates to target towing devices and it has a particular relation to devices4 for towing targets by,.aircraft during anti-aircraft'gunnery practice. 5.a. The principal Object of4 this invention is the provision of a. device of the character described which includes means for housing the target and its towing line in such. manner that when the target is launched' it willbepositively expelled fromI its, container and draw, its tow line after it without the foulngl or bunching of they latter, and which may be packed for launching with a minimum of time and labor.

With this and other objects in View, as well l5; as other advantages that may be incident to the use of the improvements, the invention consists in the. parts and combinations thereof hereinafter set forth and claimedwith the understanding that the several necessaryv elements constii0, tuting the same may be varied in proportion and arrangement without departing from the nature and scope of the invention, as defined in the appended claims.

In vorder to make theA invention more clearly :5,v understood, there are shown in the accompanying drawings, means for carrying the invention into practical use, without limiting the improvementsv in their useful application to the particular construction, which, for the purpose of explanation, l) have been made the subject of illustration.

' In the accompanying drawings:

Fig. v1 is a sidel elevational view with parts broken away of an aerial target towing device constructed in accordance with the invention;

5 Fig. 2 is a view of the after end of the structure shown in Fig. 1 with the target removed;

Fig. 3 is a side elevational view on a larger scale of. the structure shown in Fig. 1 after the target has been launched;

) Fig. 4 is an enlarged fragmentary sectionalview taken on line 4-4 off-Fig. 1 and Fig. 5 is an enlarged detail view of the tow line releasing mechanism. y

Referring to the drawings, the improved target L- towing device comprises a cylindrical container l having a rounded forward en-d II and an open after end I2. This container is provided with a circumferential band or strap I3 intermediate of its ends which is formed with ears I4 at its upper ends for attachment by means of a bolt I5 to the middle of a pair of parallel spaced supporting bars I6. 'Ihese bars in the present instance form a part of a conventional bomb rack and are secured at their forward and rear ends by means of bolts I'I and IB to brackets I9 and 2@ respectively, xed to the under surface of an airplane wing 2|. The container I is prevented from turning movement by two arcuate steadyng saddles. 2.2 also fixed between the bars I6 by bolts A coil of tow line 24 is fitted snugly with the forward portion of the container and is held against premature uncoiling or collapse by a wooden block 25 in the rounded end II of the container and a pair of spaced parallel rods 26 extending vertically through the container Il) and removably secured thereto. The end of the outer convolution of the line extends forwardly along the bottom of the container and out of its rear end and is provided with an eye 2l' for engagement by a latch pin 28y which is slidably mounted in ears 2 9 forming a part of a bracket Sli xed toa strut 3l of a, pontoon 32 (Fig. 5).

The pin 2B. is urged downwardly by a coil spring 33 interposed between the uppermost of the ears 29 and an ear 34, also formed on the bracket 30. The pin 2B maybe retracted by the pilot when he desires. to. release the tow line and target, by

means of a cable 3.5, the lower end of which is sef cured to an eye 36 on the pin 28 and which eX- tendsv upwardly into the fuselage.

The end oftheinner convolution of the tow line also extends rearwardly between the rods 2B and is provided with a detachable snap tting 3l for engagement with a ring 38 on the bridle 39 of a target t8 which is carefully folded and snugly packedin the rear end of the container I0. The target lli), preferably of canvas and ofy cylindrical form when exten-ded (Fig. 3), is urged outwardly of the container by a plurality of crossed elastic cords or bungeeslll l', the ends of which` are looped over hooks 42 carried by the container Ill. Be-

frirev the target is inserted in the container these cords 4I extend transversely across the open end of the container IB, as shown in Fig. 2, but are stretched inwardly, as shown in Fig. 1 when the folded target is pushed into the container. Premature launching of the target is prevented by a gate 43, herein shown as 'comprising a strap or bar,` which is. hingedat lill to the lower edge of the rear endof the container El and whichis releasably engaged at its4 upper end by a latchy hook 45. pivoted on the upper rear edge of the container and actuated by a cable 46 extending forwardly between the supporting bars I6 and up into the cockpit of the aircraft. In addition to the opening thrust of the target, the gate 43 is urged toward its full open position by an elastic cord il which is secured at its rear end to the gate and at its forward end to the underside of the container. When the latch hook 45 is actuated to launch the parachute, the cord 41 swings the gate downwardly. and forwardly to a horizontal position in which it is engaged by a spring latch 48 (Fig. 4). The target, when the gate is thus released, is expelled from the container by the elastic cords 4|, the'line 24 paying out freely between the rods 26 until the coil is completely unwound and the line and target are towed from the latch pin 28.

In order to prevent the several latches from being released by vibration or shock, they may be secured in position by twine which is breakable when the latches are intentionally actuated.

It will be understood that the above description and accompanying drawings comprehend only the general and preferred embodiment of the invention, and that various other changes in the construction, proportion and arrangement of the parts may be made by those skilled in the art without departing from the nature and scope of the invention as defined in the appended claims.

The invention described herein may be manufactured and/or used by or for the Government of the United States of America for governmental purposes without the payment of lany royalties thereon or therefor.

We claim:

l. Aircraft target towing device comprising a cylindrical container adapted to be secured horizontally to the under rigging of an aircraft and within the slipstream thereof, a coil of line disposed in the forward end of said container and having one end thereof fixed with respect to said aircraft, a flexible target folded into the rear end of said container and fixed to the other end of said line, means for releasably retaining said target in said container, and means for expelling said target rearwardly from said container when said retaining means is released.

2. Aircraft target towing device comprising a container adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end of an outer convolution thereof fixed with respect to said aircraft, a flexible target folded into the rear end of said container and fixed to the end of an inner convolution of said line, and resilient means for expelling said target from said container.

3. Aircraft target towing device comprising a container adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end thereof fixed with respect to said aircraft, a iiexible target folded into the rear end of said container and fixed to the other end of said line, and a plurality of resilient cords extending along the sides of the folded target and across the forward end thereof for expelling said target from said container.

4. Aircraft target towing device comprising a container adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end thereof fixed with respect to said aircraft, means extending across the rear end of said coil for supporting said coil against collapse, a flexible target folded into the rear end of said container and fixed to the other end of said line, resilient means for expelling said target from said container, retaining means for releasably holding said target in said container against the action of said expelling means, and latch means controllable by the pilot for releasing said retaining means to permit of the expulsion of said target and the unwnding of said coil of line, whereby said target may be towed by said aircraft at a predetermined distance therefrom.

5. Aircraft target towing device comprising a container adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end thereof fixed with respect to said aircraft, a plurality of removable rods for supporting said coil against collapse, a flexible target folded into the rear end of said container and fixed to the other end of said line, resilient means for expelling said target from said container, retaining means for releasably holding said target in said container against the action of said expelling means, and latch means controllable by the pilot for releasing said retaining means to permit of the expulsion of said target and the unwnding of said coil of line, whereby said target may be towed by said aircraft at a predetermined distance therefrom.

6. Aircraft target towing device comprising a container open at its rear end and adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end thereof fixed with respect to said aircraft, a flexible target folded into the rear end of said container and xed to the other end of said line, elastic members releasably secured to the rear of said container and extensible into said container when the target is inserted therein for expelling said target from said container, a strap hinged to said container and extending across the open end thereof for releasably holding said target in said container against the action of said expelling means, and latch means controllable by the pilot for releasing said retaining means to permit of the expulsion of said target and the unwnding of said coil of line, whereby said target may be towed by said aircraft at a predetermined distance there from.

7. Aircraft target towing device comprising a container adapted to be secured to the under rigging of an aircraft, a coil of line disposed in the forward end of said container and having one end thereof releasably secured to said aircraft, a flexible target folded into the rear end of said container and fixed to the other end of said line, resilient means for expelling said target from said container, retaining means for releasably holding said target in said container against the action of said expelling means, and latch means controllable by the pilot for releasing said retaining means to permit of the expulsion of said target and the unwnding of said coil of line, whereby said target may be towed by said aircraft at a predetermined distance therefrom.

DWAYNE H. CANIPBELL. HAROLD H. ENGLAND.