US2607294A - Bomb - Google Patents
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- US2607294A US2607294A US598857A US59885745A US2607294A US 2607294 A US2607294 A US 2607294A US 598857 A US598857 A US 598857A US 59885745 A US59885745 A US 59885745A US 2607294 A US2607294 A US 2607294A
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- bomb
- concrete
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- weight
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 230000005484 gravity Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- -1 benzene Chemical class 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B8/00—Practice or training ammunition
- F42B8/12—Projectiles or missiles
- F42B8/22—Fall bombs
Definitions
- the chief purpose of this invention is to create a practice or indicating bomb which has good, constant and uniform ballistic characteristics but nevertheless is simple and inexpensive to manufacture.
- bombs may be produced which have the prescribed, predetermined ballistic characteristics within very narrow limits, and consequently may be dropped with a minimum of spread, that is with a good pattern. Consequently, the bombing practice may be carried out with the same accuracy asthat attained in throwing real fighting bombs, and such practice is far more valuable than the ordinary practice heretofore possible.
- the air bombs may be made of partswith different specific gravity or different weight'per unit of volume, which are solidified, dried and weighed. Then such parts are united which together give the desired total weight and also the correct position of the centre of gravity of the bomb.
- the whole bomb may be manufactured with'the very high accuracy demanded, though it is not possible to manufacture the parts separately with such accuracy
- the low price and high accuracy of the bombs in accordance with the invention renders it advantageous to use them for practice purposes for 1.1 sighting-shots and other indicating, purposes.
- Fig. 1 shows a longitudinal section through. a. 1-5: (big) bomb in accordance with the invention.
- Figs. 2 and 3 show cross sections on thei'lines IIII and IIIIII, respectively, in Fig. 1.
- Fig. 4 is a longitudinal section through .a (small) bomb in accordance with a modified embodiment.
- a central tube 2 for-instance of meta-1 extends through the wholelength of the bomb and, preferably, projects beyond its rear; part or tail.
- tube has a constant cross section, but the. cross sec i n y a be varied, preferably in such manner that the tube 2. has'a larger cross section towards the tail of the bomb.
- the body properof the bomb is mouldedofconcrete.
- the, concrete. body is made of two parts. ,I and 3 but in certain cases; it may be suitable to. make the concrete, body of another num-- ber of parts.
- the concrete is, composed; of a; binder, preferably; of the hydraulic type, such as cement, togetherwith different mixtures of heavy sand, thaliis sand having; a higher specific gravity. than. 3.0;.
- Th heavy sand may consist of ore concentrate or of fine grainzor ipreferablyrirongore.1 To it s n of:;ordi-nary.granite, gneiss or-the like, or of concrete. clinkenpumice or the like. may: be admixed To attain a high wei ht p r un o lume o the concret th sand: may be.
- the bomb is cast inravertical mould
- the part I is cast which hasthe dominating influence upon the total weight. After this part has. solidified, it is weighed, and connected with the part 3.
- the part 3 may be poured directly upon the part I already solidified or the part 3 may. first be moulded separately and then se- 7 cured in its plane on the bomb, for instance, by means of cement mortar inserted between the parts I and 3 and between the part 3.. and the tube 2. If the part 3'is cast directly onthe part I the quantity of concrete for thepart. 3..is.
- the nose of; the bomb is made of cement, iron ore concentrate and granulated iron in the proportions 1:3:3. About 20-30% of the total weight .of the bomb is made of such concrete.
- the remainder of the part I that is about -70% by weight of 'the total weight, is made of concrete consisting only of cement and concentrate of ironore in the proportions; 1:3.
- the part 3 is made of concrete having a lower specificrav ty- It, is very important that the concrete of everybomb has a homogeneous composition and receives the same treatment. It has been found that the best results are obtained by vibrating the concrete at a-hi-gh frequency, for instance, in a machine generating the vibrations as elastic oscillations in the material of the vibratingma,-- chine proper.
- the tube 2 When the tube 2 is inserted into the concrete, it is well anchored therein due to the shrinking of the concrete. If desired, special measures, may be taken for anchoring; the tube 2 in the concrete.
- the bomb shown in Figs. 1-3 isv intended to behung horizontally in the airplane.
- irons t, 5 are laid in the-concrete and bent around thecentral tube, as shown in Fig. 2.
- the forward iron 4 is bent in a direction opposite to that of the. rear iron 5; sothat the bomb has asymmetrical distribution of the weight in relation to. its longitudinal axis or a longitudinal plane.
- 5 whiehextend to the surface of the bomb threaded holes. 6 ar made for eyes or hooks in which the bomb is hung.
- the bomb has tail vanes; I stayed by an iron ring 8.
- the vanes have a metal cone 9 enclosingtherear part of thebomb.
- a suitable indicator charge is; arranged, such as a smoke forming charge or" a. light emitting charge or both.
- a firing pin I0 is arranged in the forward portion of the tube 2. This pin. is secured toa plate II which upon impactagainst the ground drives the pin II) inwards; and thus ignites the indicator charge.
- a safety cap I2 may be provided to protect: the pin during transportation.
- the parts I and 3 are often made of concrete having diiferent Weights per unit of volume. It has turned out that the slight change of they position of the centre of gravity which is. due to the fact that parts. 3- of somewhat different weights are used, generally may be neglected without inconvenience. In such cases, in which the allowable limits of the position of the centre of gravity are too small to permit av part 3 to be secured to the tail of the bomb, the final ad-- justment of the total weight is made, in arecess in the part Ia adjacent to the, centre of gravityof the bomb, as shown in Fig. 4.
- the practice or indicator bomb I is made of concrete with such additions (such sand) that the bomb gets substantially the same ballistic characteristics as a fighting bomb of the same size.
- the bomb has tail vanes I.
- the tube 2 has a shoulder or abutment which in the embodiment shown consists of a screw I! screwed through the wall of the tube. From the nose of the bomb a tube I8 is pushed into the tube 2. The rear end of the tube I8 abuts against the screw I1 and the tube I8 is filled with an explosive, preferably black powder, though in some cases nitrous powder may also be used.
- an explosive preferably black powder, though in some cases nitrous powder may also be used.
- a primer I9 is arranged in the upper or nose end of the tube I8 .
- the striking plate I I has an eye 20 for hanging the bomb vertically in the airplane.
- the plate I I is normally locked by a safety device 33, which is removed when the bomb is thrown from the airplane in well-known manner.
- a tube 21 which, for instance, contains a smoke-forming substance or a light-emitting charge, which is expelled (or ignited and expelled) by the explosive in the tube I8 when the bomb strikes the ground.
- the tube 21 is secured by means of a split pin 28, a resilient hook or the like.
- the weight of a body of concrete varies with its percentage of humidity, it is suitable to coat the finished bombs with a non-adhesive, water-repulsing coating, such as paramn wax. It is suitable to use a solution of solid paramn in a liquid hydrocarbon, such as benzene, which evaporates after the coating process. Bombs thus coated have a constant weight even if they are stored or subject d to rain or the like.
- bombs in accordance with this invention may be manufactured with the same accuracy as fighting bombs, as far as the ballistic characteristics are concerned. Consequently the practice or indicator bombs in accordance with this invention may be dropped with at least the same accuracy as fighting bombs in spite of the fact that the cost of manufacture of the bombs in accordance with this invention is only a small fraction of the costs of corresponding fighting bombs. An accuracy of i1% in the total weight and other ballistic elements may easily be attained by use of this invention.
- a method of manufacturing air bombs for practice and other purposes comprising, casting the body of the bomb around a central tube in a vertical mould, while leaving a channel around said tube in the rear part of the bomb, weighing said body with its tube after the concrete has assumed its permanent solidified state, and casting a predetermined quantity by weight of concrete into said channel to render the desired total weight and the desired center of gravity of the bomb.
Description
E. l. LINDMAN Aug. 19, 1952 BOMB Filed June 11, 1945 %N NM \m QM W J Irv H Fatented Aug. 19, 1952 OFFICE BOMB Emrik Ivar Lindman, Ronningm'sweden Application June 11, 1945, Serial No. 598,857 In Sweden October 7, 1940 Section 1, Public Law 690, August 8, 1946 Patent expires October 7, 1960 Dummy or practice bombs to be thrown from airplanes are often made of concrete. It has been proposed to weight such bombs with pieces of waste or'scrap iron introduced into the concrete in order to give the bomb a sufiicient weight. This also renders it possible to' adjust the position of the centre of gravity to a certain extent. Among other features, the weight of the bomb and theposition of its centre of gravity have a preponderant influence upon the ballistic qualities of the bomb.
These bombs, however, are rather unsatisfactory and they'have not the same ballistic qualities as real fighting or explosive bombs. Conse-. quently, these dummy bombs are not suitable for an efiicient training of the air-men. In addition, practice bombs heretofore known have very variable ballistic characteristics, though every effort was made at their manufacture to get a uniform product. Consequently, the pattern or spread is bad when such bombs are thrown. One cause of this drawback is that the pieces of scrap iron in the concrete are easily displaced during the solidification of the concrete, thus essentially changing the ballistic characteristics of the practice bomb.
The chief purpose of this invention is to create a practice or indicating bomb which has good, constant and uniform ballistic characteristics but nevertheless is simple and inexpensive to manufacture. In accordance with the invention bombs may be produced which have the prescribed, predetermined ballistic characteristics within very narrow limits, and consequently may be dropped with a minimum of spread, that is with a good pattern. Consequently, the bombing practice may be carried out with the same accuracy asthat attained in throwing real fighting bombs, and such practice is far more valuable than the ordinary practice heretofore possible.
It is a well-known matter of fact that fighting bombs of steel are manufactured with very high precision in those ballistic features which are decisive for the path of the bomb through the air. Thus, it is possible to throw such bombs with high accuracy on the target. however, heretofore not be attained, when manufacturing and using practice bombs of concrete. Certainly, efforts were made to give the concrete bomb the same external shape as the corresponding steel bomb, as accurately as possible, but in spite of this the concrete bombs differ very much in other ballistics data from the steel bombs, and
also are very variable in such ballistic data. For instance, it was not possible to attain a cor- This could,
1 Claim. ('Cl. 102--7.6)'
, 2 reel; position of the centre of gravity and simultaneously a correct total weight of the bomb, within reasonably narrow limits.
Consequently such practice bombs of concrete were unsatisfactory and not suitable for an efiicient training of the air-men. The pattern or spread is bad, when such bombs are thrown. For these reasons, the military supplies authorities found it impossible to prescribe any weight limits, but had to be content with demanding a certain accuracy in the external shape of the bomb. As a matter of fact it was heretofore impossible to attain the desired accuracy in external shape, total weight and position of the centre of gravity. It does not suffice to use exactly the same mould and to pour concrete in it, because even if the components of the concrete are weighed and mixed with high accuracy the composition of the concrete varies much, and consequently concrete bombs moulded in the same mould turn out to be very different. It must be observed that concrete absorbs water, also after it has dried. The decisive ballastic data, such as the position of the center of gravity, the total weight and the external shape, are predetermined with regard tothe desired ballistic properties of the steel bomb, taking the properties of the steel into consideration, and it was heretofore impossible to attain the same data in concrete bombs, concrete having quite different properties. To render concrete bombs really valuable for practice purposes, small bombs should be so accurate that, for instance, their total weight differs at most i1%from the prescribed average value for the corresponding sharp or fighting bomb of steel. For very big bombs, this tolerated limit may be increased to il Hereto-fore, it was absolutely impossible to attain values even in the neighbourhood thereof; even steel bombs could not always be manufactured with sohigh accuracy.
In accordance with my invention, the air bombs may be made of partswith different specific gravity or different weight'per unit of volume, which are solidified, dried and weighed. Then such parts are united which together give the desired total weight and also the correct position of the centre of gravity of the bomb. Thus, the whole bomb may be manufactured with'the very high accuracy demanded, though it is not possible to manufacture the parts separately with such accuracy The very fact that a body of concrete cannot be moulded (cast) with a predetermined high acouracy led to the idea that it was impossible to manufacture concrete bombs 3 with high accuracy in respect of their weight. It should perhaps be mentioned that such accuracy cannot be attained by weighing a predetermined quantity of concrete mass and then introducing said weighed quantity into the same mould. It will be found that nevertheless the finished concrete bombs thus produced varyjextensively in their total weight.
The low price and high accuracy of the bombs in accordance with the invention renders it advantageous to use them for practice purposes for 1.1 sighting-shots and other indicating, purposes.
Embodiments of bombs in accordance with this invention are shown in the annexed drawing, c
Fig. 1 shows a longitudinal section through. a. 1-5: (big) bomb in accordance with the invention.
Figs. 2 and 3 show cross sections on thei'lines IIII and IIIIII, respectively, in Fig. 1.
Fig. 4 is a longitudinal section through .a (small) bomb in accordance with a modified embodiment.
Referring now to Figs. 1.3 of the drawings, a central tube 2, for-instance of meta-1,,extends through the wholelength of the bomb and, preferably, projects beyond its rear; part or tail. In
the embodiment shown Said, tube has a constant cross section, but the. cross sec i n y a be varied, preferably in such manner that the tube 2. has'a larger cross section towards the tail of the bomb. Around the tube 2 the body properof the bombis mouldedofconcrete. In the embodiment shown, the, concrete. body is made of two parts. ,I and 3 but in certain cases; it may be suitable to. make the concrete, body of another num-- ber of parts.
The concrete is, composed; of a; binder, preferably; of the hydraulic type, such as cement, togetherwith different mixtures of heavy sand, thaliis sand having; a higher specific gravity. than. 3.0;. In certain cases binders Of. the asphal- 40 tic-type or. of other types may be used, Th heavy sand, may consist of ore concentrate or of fine grainzor ipreferablyrirongore.1 To it s n of:;ordi-nary.granite, gneiss or-the like, or of concrete. clinkenpumice or the like. may: be admixed To attain a high wei ht p r un o lume o the concret th sand: may be. mix wi h o entirely. cons st; o g anulated; ir n o. all d ranule manufactured b la n p iron in water) or lead, The word sand here has the sense accepted intheconcrete technics and; consequently indicates particles. up to? mm. By proportioning the'difierent types of sand in relation to each other andto. the bindenit isconsequently possible to control the weight per unit of volume to any desiredvalue, within the limits herein concerned. a
Preferably, the bomb is cast inravertical mould,
, and concrete with the desired weight per unit of; volume is poured on different levels, after the preceding pouring has solidified. Thus, it is possible to cause the centre of gravity to assume the desired position, while simultaneously the total weight of the bomb gets the desired value. First the part I is cast which hasthe dominating influence upon the total weight. After this part has. solidified, it is weighed, and connected with the part 3. The part 3 may be poured directly upon the part I already solidified or the part 3 may. first be moulded separately and then se- 7 cured in its plane on the bomb, for instance, by means of cement mortar inserted between the parts I and 3 and between the part 3.. and the tube 2. If the part 3'is cast directly onthe part I the quantity of concrete for thepart. 3..is. first weighed so that it renders the prescribed total weight of the bomb together with the part I (after the weight of such metal parts have been deducted which possibly were not weighed together with the part I). If the part 3 is manufactured separately, series of such parts are generally manufactured, which are weighed after the solidification and then are combined with such parts I as will give the desired total weight. It has been found that when bombs are manufactured on a large scale such adjustment of the weight may be made at a low cost.
In one preferred embodiment for small bombs, the nose of; the bomb is made of cement, iron ore concentrate and granulated iron in the proportions 1:3:3. About 20-30% of the total weight .of the bomb is made of such concrete.
The remainder of the part I, that is about -70% by weight of 'the total weight, is made of concrete consisting only of cement and concentrate of ironore in the proportions; 1:3. Finally, the part 3 is made of concrete having a lower specificrav ty- It, is very important that the concrete of everybomb has a homogeneous composition and receives the same treatment. It has been found that the best results are obtained by vibrating the concrete at a-hi-gh frequency, for instance, in a machine generating the vibrations as elastic oscillations in the material of the vibratingma,-- chine proper.
When the tube 2 is inserted into the concrete, it is well anchored therein due to the shrinking of the concrete. If desired, special measures, may be taken for anchoring; the tube 2 in the concrete.
The bomb shown in Figs. 1-3 isv intended to behung horizontally in the airplane. For this purpose irons t, 5 are laid in the-concrete and bent around thecentral tube, as shown in Fig. 2. The forward iron 4 is bent in a direction opposite to that of the. rear iron 5; sothat the bomb has asymmetrical distribution of the weight in relation to. its longitudinal axis or a longitudinal plane. In those ends of the irons 4, 5 whiehextend to the surface of the bomb threaded holes. 6 ar made for eyes or hooks in which the bomb is hung.
In; this embodiment the bomb has tail vanes; I stayed by an iron ring 8. The vanes have a metal cone 9 enclosingtherear part of thebomb.
In the tube 2 a suitable indicator charge is; arranged, such as a smoke forming charge or" a. light emitting charge or both. For igniting; this; charge, either by direct shockaction or by means, of an igniting charge- (primer or fuse) and/or anexpelling charge (detonator) a firing pin I0 is arranged in the forward portion of the tube 2. This pin. is secured toa plate II which upon impactagainst the ground drives the pin II) inwards; and thus ignites the indicator charge. A safety cap I2 may be provided to protect: the pin during transportation. I
The parts I and 3 are often made of concrete having diiferent Weights per unit of volume. It has turned out that the slight change of they position of the centre of gravity which is. due to the fact that parts. 3- of somewhat different weights are used, generally may be neglected without inconvenience. In such cases, in which the allowable limits of the position of the centre of gravity are too small to permit av part 3 to be secured to the tail of the bomb, the final ad-- justment of the total weight is made, in arecess in the part Ia adjacent to the, centre of gravityof the bomb, as shown in Fig. 4. In such cases only the forward or nose portion of the tube 2 is cast into the concrete, while the tail part of said tube is surrounded by a free channel 3I produced by inserting a second tube from the rear end (from the top of the mould) into the mould around the tube 2. This second tube is removed, as soon as the concrete has solidified. After the part Ia thus produced has been weighed to find its exact weight, a fixed amount of concrete 30 is introduced through said channel 3I towards the nose of the bomb, that is towards the centre of gravity, and this addition is left to solidify. The rear end of the channel around the tube 2 may then be sealed in any suitable manner, as shown at 32.
Also in Fig. 4 the practice or indicator bomb I is made of concrete with such additions (such sand) that the bomb gets substantially the same ballistic characteristics as a fighting bomb of the same size. The bomb has tail vanes I. The tube 2 has a shoulder or abutment which in the embodiment shown consists of a screw I! screwed through the wall of the tube. From the nose of the bomb a tube I8 is pushed into the tube 2. The rear end of the tube I8 abuts against the screw I1 and the tube I8 is filled with an explosive, preferably black powder, though in some cases nitrous powder may also be used. In the upper or nose end of the tube I8 a primer I9 is arranged.
The striking plate I I has an eye 20 for hanging the bomb vertically in the airplane.
The plate I I is normally locked by a safety device 33, which is removed when the bomb is thrown from the airplane in well-known manner.
Below (behind) the powder-filled tube I8 a tube 21 is placed which, for instance, contains a smoke-forming substance or a light-emitting charge, which is expelled (or ignited and expelled) by the explosive in the tube I8 when the bomb strikes the ground. The tube 21 is secured by means of a split pin 28, a resilient hook or the like.
Because the weight of a body of concrete varies with its percentage of humidity, it is suitable to coat the finished bombs with a non-adhesive, water-repulsing coating, such as paramn wax. It is suitable to use a solution of solid paramn in a liquid hydrocarbon, such as benzene, which evaporates after the coating process. Bombs thus coated have a constant weight even if they are stored or subject d to rain or the like.
6 It has turned out that bombs in accordance with this invention may be manufactured with the same accuracy as fighting bombs, as far as the ballistic characteristics are concerned. Consequently the practice or indicator bombs in accordance with this invention may be dropped with at least the same accuracy as fighting bombs in spite of the fact that the cost of manufacture of the bombs in accordance with this invention is only a small fraction of the costs of corresponding fighting bombs. An accuracy of i1% in the total weight and other ballistic elements may easily be attained by use of this invention.
Some of the features illustrated and described herein are also illustrated and described but not claimed in my copending U. S. patent applications Serial No. 417,728, filed November 11, 1941, now Patent No. 2,456,289 and No. 598,856, now abandoned, filed simultaneously with my present application.
What I claim is:
A method of manufacturing air bombs for practice and other purposes, comprising, casting the body of the bomb around a central tube in a vertical mould, while leaving a channel around said tube in the rear part of the bomb, weighing said body with its tube after the concrete has assumed its permanent solidified state, and casting a predetermined quantity by weight of concrete into said channel to render the desired total weight and the desired center of gravity of the bomb.
EMRIK IVAR LINDMAN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Great Britain Feb. 17, 1939
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE618494X | 1940-10-07 | ||
SE618496X | 1941-06-19 |
Publications (1)
Publication Number | Publication Date |
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US2607294A true US2607294A (en) | 1952-08-19 |
Family
ID=26656293
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US417728A Expired - Lifetime US2456289A (en) | 1940-10-07 | 1941-11-03 | Safety device for air bombs |
US598857A Expired - Lifetime US2607294A (en) | 1940-10-07 | 1945-06-11 | Bomb |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US417728A Expired - Lifetime US2456289A (en) | 1940-10-07 | 1941-11-03 | Safety device for air bombs |
Country Status (3)
Country | Link |
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US (2) | US2456289A (en) |
FR (1) | FR954322A (en) |
GB (3) | GB618495A (en) |
Cited By (4)
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US3288895A (en) * | 1963-03-13 | 1966-11-29 | Bell Telephone Labor Inc | Control of capacitance of individual wires of multiwire structure |
US4109579A (en) * | 1976-10-29 | 1978-08-29 | Carter Pol Development Corp. | Practice ammunition device |
US6539871B2 (en) * | 2001-03-29 | 2003-04-01 | Alliant Techsystems Inc. | Degradable practice mine |
US7261042B1 (en) * | 2004-07-08 | 2007-08-28 | Lockheed Martins Corporation | Insensitive munition design for shrouded penetrators |
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NL227843A (en) * | 1957-05-16 | |||
BE707613A (en) * | 1967-01-02 | 1968-04-16 | ||
FR2831683B1 (en) * | 2001-10-26 | 2003-12-19 | Tda Armements Sas | ADJUSTABLE POSITIONING SYSTEM |
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GB258649A (en) * | 1925-06-22 | 1926-09-22 | Vickers Ltd | Improvements in or relating to practice bombs for aircraft use |
GB443451A (en) * | 1934-11-03 | 1936-02-28 | Blackburn Aeroplane & Motor Co | Improvements in or relating to practice bombs, smoke and gas shells and the like |
FR811226A (en) * | 1935-11-06 | 1937-04-09 | Ig Farbenindustrie Ag | Smoke charges to produce colored smoke |
US2108818A (en) * | 1937-04-21 | 1938-02-22 | Sargent P Huff | Practice bomb |
US2327414A (en) * | 1938-10-15 | 1943-08-24 | Munitions Inc | Bomb |
US2335763A (en) * | 1940-01-16 | 1943-11-30 | Imber Jack | Safety device for aerial bombs |
-
1941
- 1941-11-03 US US417728A patent/US2456289A/en not_active Expired - Lifetime
-
1942
- 1942-04-21 GB GB16072/43A patent/GB618495A/en not_active Expired
- 1942-04-21 GB GB5347/42A patent/GB618494A/en not_active Expired
- 1942-04-21 GB GB16073/43A patent/GB618496A/en not_active Expired
-
1945
- 1945-06-11 US US598857A patent/US2607294A/en not_active Expired - Lifetime
-
1947
- 1947-10-16 FR FR954322D patent/FR954322A/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE310061C (en) * | ||||
FR457302A (en) * | 1912-01-15 | 1913-09-16 | Vigilio Baldo | Device for launching projectiles aboard war airplanes |
US1271029A (en) * | 1918-04-03 | 1918-07-02 | Emil Gathmann | Practice-bomb. |
GB233804A (en) * | 1924-02-19 | 1925-05-19 | Vickers Ltd | Improvements in or relating to practice bombs for aircraft use |
US1632147A (en) * | 1926-03-06 | 1927-06-14 | Secretary Of War Dwight F Davi | Dummy bomb |
US1765017A (en) * | 1928-01-19 | 1930-06-17 | France Etat | Drill projectile for bombarding planes |
US1963451A (en) * | 1932-11-05 | 1934-06-19 | Stackelberg Yurgen Baron S Von | Practice bomb |
GB500919A (en) * | 1937-03-25 | 1939-02-17 | Hunziker & Cie Zurich Baustoff | Improvements in or relating to air bombs |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3288895A (en) * | 1963-03-13 | 1966-11-29 | Bell Telephone Labor Inc | Control of capacitance of individual wires of multiwire structure |
US4109579A (en) * | 1976-10-29 | 1978-08-29 | Carter Pol Development Corp. | Practice ammunition device |
US6539871B2 (en) * | 2001-03-29 | 2003-04-01 | Alliant Techsystems Inc. | Degradable practice mine |
US7261042B1 (en) * | 2004-07-08 | 2007-08-28 | Lockheed Martins Corporation | Insensitive munition design for shrouded penetrators |
Also Published As
Publication number | Publication date |
---|---|
GB618495A (en) | 1949-02-23 |
FR954322A (en) | 1949-12-22 |
US2456289A (en) | 1948-12-14 |
GB618496A (en) | 1949-02-23 |
GB618494A (en) | 1949-02-23 |
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