US3179048A - Device to provoke underwater explosions - Google Patents

Device to provoke underwater explosions Download PDF

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Publication number
US3179048A
US3179048A US179125A US17912562A US3179048A US 3179048 A US3179048 A US 3179048A US 179125 A US179125 A US 179125A US 17912562 A US17912562 A US 17912562A US 3179048 A US3179048 A US 3179048A
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United States
Prior art keywords
piston
orifice
tubular
hydrostatic pressure
explosive
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Expired - Lifetime
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US179125A
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English (en)
Inventor
Jose Mean Y Vieyra De Abreu
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C5/00—Fuzes actuated by exposure to a predetermined ambient fluid pressure

Definitions

  • Another important feature consists in that the charge or mines fitted with this new device, do not explode upon impact with the liquid mass, whether launched by special means, by hand or from aircraft, in no matter which manner of construction, as it can only act under water and precisely in virtue of the hydrostatic pressure applied thereto.
  • the sinking speed of the projectile will not delay or advance the moment of explosion, as such is produced by the actual hydrostatic pressure in cooperation with a coil spring that is described hereinafter.
  • the fuzes that are fitted with this new device can be mounted for an indefinite period of time to their charges or mines, destitute of any risks or danger whatsoever, as the detonator can be kept separately and coupled thereto at the precise moment of launching the projectile; an operation that only requires a very short space of time, i.e., a few seconds of attention.
  • the mines or charges can be provided with variable amounts of explosive in compliance with the desired effects.
  • FIG. 1 is a longitudinal section of the device constituting the ⁇ object of the present invention, showing therein the following elements: l--The lid or cover that hermetically seals the device and which is held to the head portion thereof by means of a screw thread to ensure a perfect seal. Said cover efficiently protects all functional organs, in particular the safety and firing elements. Z--The water inlet valve that is threaded to the central and upper portion of said head portion. 3 The orifice applied to the upper portion of the valve 2 to facilitate inspection of the position of the inertia safety element.
  • i12-The firing piston constituted by a cylindrical body mounted by means of a diametral difference to the internal portion of the likewise cylindrical body i9, constituting the central appendage of the missile.
  • said piston l2 has to slide along the appendage i9, the adjustment thereof is such that no water can penetrate to the space between both elements.
  • a variable number of Said balls are lodged in the bores applied to the firing piston l2 susceptible to being displaced laterally both toward the inside as also the outside of the piston l2, not dropping out or leaving their seating due to the periphery of the referred to bores being properly flanged.
  • ld-The inertia safety element constituted by a cylindrical body placed in a slideable manner inside the firing piston l2, while furthermore ensuring, between said piston and the inertia lsafety element, the required watertightness, same as between the firing piston and the appendage i9, so as to prevent water penetrating to the inside.
  • l-The helicoidal spring that is mounted inside the firing piston yand in the hollow portion of the inertia safety element, whose constant thrust prevents the descent of said inertia safety element after the transport safety device has been removed.
  • This shutter is constituted by two superposed washers compressing between same a tinfoil disk, or the like, so as to insulate an eventual explosion of the cap Zt while ensuring a hermetic seal of the explosive.
  • ,Z2-The striker pin located in a position facing the fuhninant of the detonator 2li.
  • ZS-The base of the firing pin constituted by a circular element holding said pin 22 in the center thereof.
  • 24E-* The multiplier explosive provided with a two diameter axil bore, of which the top bore is the larger to enable a passage for the detonator, so that detonation is produced in the precise center of the multiplier explosive.
  • the lower portion that of a smaller diameter, enables the passage of the striker pin, adjusted to the walls thereof in order to avoid decentration and to ensure a permanent location of same in front of the detonator cap.
  • Second figura- This ligure represents a detail in a longitudinal section of the device, identifying therein the possibility of placing one or several supplementary elements in the internal chamber of the firing piston 12, for the purpose of ensuring a greater tension of the helicoidal spring 1.7, said supplementary elements acting as regulators, in virtue of which the explosion will be produced at a greater depth due to an increase of the hydrostatic pressure that is required to subdue the greater tension of said spring.
  • Sil- Illustrates the referred to supplementary elements constituted by a determined number of disks made of an appropriate material and thickness to be able to comply with their mission.
  • each of these supplementary disks is scientifically calculated and experimentally tested, so that when placed underneath the helicoidal spring 17 they will increase the resistance that said spring exerts upon the advance movement of the inertia safety element 16 when submitted to hydrostatic pressure.
  • This increase of resistance apt to be graduated, progressively, in accordance to whether one, two, three or several disks are utilized, provokes firing, progressively, at a greater depth as will be described hereinafter.
  • Third figura-This ligure is a sectional View of the referred to device when utilized as a fuze for a charge or mine, of a large variety of dimensions and shapes.
  • 3l- Represents the body of the charge or mine that is mounted to the device by means of the thread Z3.
  • the cited device can be utilized as a separate element (FIG. l), or else coupled to charges or mines (FIG. 3), of a large variety of dimensions and shapes.
  • the explosive force will depend upon the volume and kind of explosive Z4.
  • same will depend upon the force of the explosive 24 in combination with the explosive contained in the charge or mine 31.
  • the main applications in the tirst instance are as follows; submarine explosions of a reduced or regular power for prospection and research work, bathymetric exploitations, etc. Explosions destined to scare or destroy sharks or other harmful or dangerous species. Furthermore, it can be used against amphibian, as a defense against frog men, human torpedoes, divers and the like, as also for the transmission of signals by explosions, prior to an established code, to submarines and the like, as also in the destruction of torpedoes or drifting mines, etc.
  • the performance of the device is as follows (FIG. 1): After removing the lid or cover 1 and thereafter the transport safety element 7, the projectile is launched into the water. No matter the dropping force upon striking the liquid mass, a blocking of the ring piston will be ensured by the fact that the inertia safety element 16 which cannot descend while it is retained in its position by the spring 17, forces the balls 14 outwardly, so that the piston cannot descend as said balls, together with the piston thus constitute a catch that prevents its descent beyond the step 15.
  • the inertia safety element 16 is caused to advance slowly and will thus progressively compress the helicoidal spring 17 until the inertia safety element 16, in its advance movement overrides the step 15, at which moment the tiring operation takes place in the following manner:
  • the upper portion of the inertia safety element 16 overrides the line of said balls, i.e., the step 1S, it will cease to push said balls outwardly and thus as the hydrostatic pressure acts not alone upon the inertia safety element 16, but likewise upon the entire section of the firing piston 12, this piston will consequently violently shoot downward as the balls 14 are no longer retained, whereas said balls during the advance of the piston i2 will be pushed by the step 15 toward the internal portion of said piston, practically without offering any resistance whatsoever.
  • the piston 12 will advance rapidly in virtue of the thrust exerted by the hydrostatic pressure, thus precipitating the detonator 2? against the tiring pin 22;, after having broken, during its advance, the tinfoil, or the like, disk that is located in the central portion of the shutter 21.
  • the firing pin 22 produces the explosion of the detonator inside the multiplier explosive 24, so that thereby a perfect tiring of said multiplier explosive is ensured.
  • the tension of the helicoidal spring i7 can be increased as desired by previously rated and calibrated disks 3i) as supplementary elements placed between said spring 17 and the detonator Ztl.
  • An underwater explosive device adapted to fire at preselected fixed depths, comprising a tubular housing closed at the bottom, an explosive in the bottom portion of the housing, said explosive having a well in the upper surface thereof in which a striker pin extends, the upper portion of the housing being partially closed by a head having an inwardly and downwardly disposed cylinder opening both upwardly and downwardly, a tubular piston slidably disposed in said cylinder to move under hydrostatic pressure, a detonator secured at the bottom of the piston and positioned to strike said striker pin upon downward movement of the piston, a second piston slideable in said tubular piston, biasing means positioned between said rst and second pistons urging them apart and including means for varying the compression of said biasing means for selectively controlling the depth of detonation, said tubular piston having at least one perennial in its wall, a groove in said cylinder aligned with said orifice and positioned in an upper location, and movable detent means seated in said orifice and groove and retained there
  • tubular piston is a cylinder having a closure wall at its bottom
  • said second piston is a safety cylinder slidable within the bore of said tubular piston and having a closure wall at its top
  • said biasing means being a compression spring seated on the bottom closure wall of the tubular piston and bearing against the upper closure wall of the safety cylinder.
  • tubular piston has a wall portion extending above the top of said housing head with at least one opening therein, there being further provided a removable safety bar passing into said opening to prevent downward movement of the tubular piston, an upward projection from said safety cylinder wall having an opening capable of alignment with said opening in the piston wall portion and adapted to receive said safety bar for also locking the safety cylinder .against downward movement, a cap removably secured to said head, a cover removably secured to said head and enclosing said cap and said safety bar, said cap lying within a hollow portion of said cover, said cap having aligned openings for passage of said safety bar and passage of water to the safety cylinder and tubular piston upon removal of the safety bar, and said removable cap having a central aperture for visual inspection and passage of water to the safety cylinder.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US179125A 1961-03-25 1962-03-12 Device to provoke underwater explosions Expired - Lifetime US3179048A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES26606661 1961-03-25

Publications (1)

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US3179048A true US3179048A (en) 1965-04-20

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US179125A Expired - Lifetime US3179048A (en) 1961-03-25 1962-03-12 Device to provoke underwater explosions

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US (1) US3179048A (de)
DE (1) DE1201716B (de)
GB (1) GB974637A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2308905A1 (fr) * 1975-04-24 1976-11-19 Amado Laguna De Rins Sa Fusee-detonateur a surete pour engins speciaux sous-marins
FR2812937A1 (fr) * 2000-08-14 2002-02-15 Denel Proprietary Ltd Dispositif d'amorcage amplificateur de force pour cartouche
CN101806563A (zh) * 2010-03-10 2010-08-18 杜文博 安全起爆装置
CN116499317A (zh) * 2023-06-20 2023-07-28 哈尔滨工程大学三亚南海创新发展基地 一种水下高压气泡弹

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1314665A (en) * 1919-09-02 Fibincr-gear fob depth-mines
US1314662A (en) * 1918-02-12 1919-09-02 Vickers Ltd Depth-mine firing-gear and safety device therefor.
US1514743A (en) * 1921-07-19 1924-11-11 Vickers Ltd Submarine mine and other explosive charge for submarine use
US2340695A (en) * 1940-01-31 1944-02-01 Hercules Powder Co Ltd Explosive cartridge
US2850974A (en) * 1954-11-10 1958-09-09 Abreu Jose Menay Vieyra De Hydrostatic fuze
US3031963A (en) * 1959-04-06 1962-05-01 Jose Mena Y Vieyra De Abreu Priming apparatus for detonating underwater explosive charges

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1254104A (fr) * 1959-04-06 1961-02-17 Fusée de mise à feu pour charges explosives subaquatiques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1314665A (en) * 1919-09-02 Fibincr-gear fob depth-mines
US1314662A (en) * 1918-02-12 1919-09-02 Vickers Ltd Depth-mine firing-gear and safety device therefor.
US1514743A (en) * 1921-07-19 1924-11-11 Vickers Ltd Submarine mine and other explosive charge for submarine use
US2340695A (en) * 1940-01-31 1944-02-01 Hercules Powder Co Ltd Explosive cartridge
US2850974A (en) * 1954-11-10 1958-09-09 Abreu Jose Menay Vieyra De Hydrostatic fuze
US3031963A (en) * 1959-04-06 1962-05-01 Jose Mena Y Vieyra De Abreu Priming apparatus for detonating underwater explosive charges

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2308905A1 (fr) * 1975-04-24 1976-11-19 Amado Laguna De Rins Sa Fusee-detonateur a surete pour engins speciaux sous-marins
US4056058A (en) * 1975-04-24 1977-11-01 Laguna De Rins Fernando Almarz Safety fuse for underwater artefacts
FR2812937A1 (fr) * 2000-08-14 2002-02-15 Denel Proprietary Ltd Dispositif d'amorcage amplificateur de force pour cartouche
CN101806563A (zh) * 2010-03-10 2010-08-18 杜文博 安全起爆装置
CN101806563B (zh) * 2010-03-10 2013-06-26 杜文博 安全起爆装置
CN116499317A (zh) * 2023-06-20 2023-07-28 哈尔滨工程大学三亚南海创新发展基地 一种水下高压气泡弹
CN116499317B (zh) * 2023-06-20 2023-08-18 哈尔滨工程大学三亚南海创新发展基地 一种水下高压气泡弹

Also Published As

Publication number Publication date
DE1201716B (de) 1965-09-23
GB974637A (en) 1964-11-11

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