US2871788A - Impact fuzes for explosive projectiles including a mechanical self-destruction device - Google Patents
Impact fuzes for explosive projectiles including a mechanical self-destruction device Download PDFInfo
- Publication number
- US2871788A US2871788A US585524A US58552456A US2871788A US 2871788 A US2871788 A US 2871788A US 585524 A US585524 A US 585524A US 58552456 A US58552456 A US 58552456A US 2871788 A US2871788 A US 2871788A
- Authority
- US
- United States
- Prior art keywords
- fuze
- sleeve
- impact
- push
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
- F42C9/14—Double fuzes; Multiple fuzes
- F42C9/16—Double fuzes; Multiple fuzes for self-destruction of ammunition
- F42C9/18—Double fuzes; Multiple fuzes for self-destruction of ammunition when the spin rate falls below a predetermined limit, e.g. a spring force being stronger than the locking action of a centrifugally-operated lock
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
- F42C9/14—Double fuzes; Multiple fuzes
- F42C9/16—Double fuzes; Multiple fuzes for self-destruction of ammunition
Definitions
- a self-destruction device including at least one centrifugal locking member kept in locking position as long as the speed of rotation of the projectile-about its axis remains above a predetermined value, said locking member temporarily holding in waiting position an intermediate member capable, when released and under the action of a resilient system, of setting off the fuze by displacement of a
- the object of my invention is to provide a fuze of this kind which is better adapted to meet the requirements of practice than those used up to this time, and in particular which works always in the same fashion irrespective of the value of the impact shock (provided of course this shock is sufiicient)
- I provide, in the front portion of the fuze body, a push-piece operative by an impact shock and mounted to act directly, through its displacement caused by said shock, on said locking member so as to produce the retraction thereof and consequently the release of the intermediate member which then communicates to the movable part (firing pin), under the only action 'of the resilient system (that is to say irrespective of the violence of .the impact shock), a displacement which sets off the fuze.
- Fig. 1 is an axial section .view of an impact fuze made according to my invention, said fuze being shown in the state of rest, that is to say such as it is before the projectile is fired.
- Figs. 2 and 3 are half-sections showing the positions of the parts of this fuze at two different times during the operation thereof.
- an axial cylindrical hole 2 in which is slidable axially a first sleeve 3 the rear part of which is surrounded by a spring ring 4 the rear edge of which bears against a shoulder 5 provided in said sleeve 3, said ring 4 and shoulder 5 being located in an enlarged hole 6 in line with the hole 2 at the rear thereof.
- Sleeve 3 is provided, rearwardly' of shoulder 5, with a transverse cylindrical housing 7 in which are slidably guided two cylindrical masses 8 the outer ends of which are of frusto-conical shape.
- a second sleeve 9 is slidable axially in the first sleeve 3 and it is provided with radial housings 10 each of which contains a centrifugal mass constituted by a ball 11 which, 'in its position at the maximum distance from the axis of the fuze body, is applied against the bevelshaped edge 3a of sleeve 3, this front edge 3a therefore acting as a frusto-conical cam.
- Sleeve 9 forms a hous- Switzerland, assignor to Brevets 2,871,788 Patented Feb. 3, 1959 ice ing for a spring 12 surrounding a firing pin 13.
- the rear end of said spring 12 is applied against a shoulder 9a integral with sleeve 9.
- the front end of spring 12 is applied against a piece 18 applied frontwardly against a shoulder of the fuze body 1 and Which will be more explicitly referred to hereinafter.
- the fuze is then ready to he set upon an obstacle, by percussion means 'Which will be explained hereinafter and the various partsof said fuze occupy the positions illustrated by Fig. 2.
- a push-piece 18 exposed acts directly upon the for retracting them into sleeve 9 when there is an Impact of the shell upon an obstacle.
- said push-piece is protected within certain limits by a relatively thin disc 19 capable of resisting slight shocks of a violence lower than the minimum violence under which the fuze is to operate.
- Fig. 3 shows the positions occupied by the elements of the fuze just at the time impact occurs, that is to say when push-piece 18 has caused balls 11 to retract into the housing .and the whole of sleeve 9 and firing pin 13 is going to-be driven rearwardly by spring 12, as indicated by arrow F.
- An impact fuze for use with a rotating projectile which comprises, in combination, a fuze body having a longitudinal axis, a member movable longitudinally in said body, an impact responsive push-piece slidable longitudinally in said body, cooperating abutment means carried by said fuze body and said push-piece, said push-piece being initially fitted in said fuze body in the position where said abutment means are in contact together, whereby said push-piece can slide longitudinally from said position only in one direction, resilient means interposed between said push-piece and said member for urging said member in said direction with respect to said push-piece, a firing part movable in said body from an inactive position to a firing position in which the fuze is set ofli, said firing part being operatively connected with said member so that longitudinal movement of said member in said direction under the action of said resilient means causes said firing part to move from said inactive position to said firing position, at least one centrifugal mass guided in said member so as to be movable transversely there
- An impact fuze for use with a rotating projectile which comprises, in combination, a fuze body having a longitudinal axis, a sleeve movable longitudinally in said body, an impact responsive push-piece slidable longitudinally in said body, cooperating abutment means carried by said fuze body and said push-piece, said pushpiece being initially fitted in said fuze body in the position where said abutment means are in contact together, whereby said push-piece can slide longitudinally from said position only in the rearward direction, a spring interposed between push-piece and said sleeve for urging said sleeve in said direction with respect to said pushpiece, a firing pin slidable in said sleeve from a forward inactive position to a rearward firing position in which the fuze is set off, said firing pin including a shoulder in contact with the rear face of said sleeve so that longitudinal movement of said sleeve in the rearward direction under the action of said spring causes said firing pin to move
- An impact fuze according to claim 2 in which said sleeve is provided with radial cylindrical guiding passages, said centrifugal mass being inthe form of balls movably guided in said cylindrical passages.
- An impact fuze according to claim 3 in which the rear end of said push-piece is in the form of a sleeve having a frustoconical edge forming said cam means adapted to engage said balls so as to push them inwardly when said push-piece is itself driven rearwardly by impact upon an obstacle.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Vibration Dampers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU330867X | 1955-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2871788A true US2871788A (en) | 1959-02-03 |
Family
ID=19732587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US585524A Expired - Lifetime US2871788A (en) | 1955-05-24 | 1956-05-17 | Impact fuzes for explosive projectiles including a mechanical self-destruction device |
Country Status (8)
Country | Link |
---|---|
US (1) | US2871788A (de) |
BE (1) | BE547941A (de) |
CH (1) | CH330867A (de) |
DE (1) | DE1006317B (de) |
FR (1) | FR1153517A (de) |
GB (1) | GB785204A (de) |
LU (1) | LU33614A1 (de) |
NL (2) | NL207241A (de) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033115A (en) * | 1958-06-12 | 1962-05-08 | Brevets Aero Mecaniques | Nose fuzes of the percussion type including a self-destruction device |
US3112704A (en) * | 1960-12-23 | 1963-12-03 | Rheinmetall Gmbh | Self-destroying fuze for a spinning projectile |
US3270670A (en) * | 1964-02-18 | 1966-09-06 | Brevets Aero Mecaniques | Impact fuzes for spinning explosive projectiles and more particularly basedetonatingfuzes of the type equipped with a mechanical auto-destruction device |
US3410214A (en) * | 1965-12-06 | 1968-11-12 | Oerlikon Buehrle Holding Ag | Percussion fuze |
US3782290A (en) * | 1972-01-19 | 1974-01-01 | Us Navy | Ordnance arming assembly |
US3994230A (en) * | 1974-09-02 | 1976-11-30 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Self-destruction type nose impact fuze for spinning projectiles |
US4449455A (en) * | 1981-05-15 | 1984-05-22 | Gebruder Junghans Gmbh | Inertia fuse with a self-destruct device for use in spinning projectiles |
US4471698A (en) * | 1982-02-25 | 1984-09-18 | Honeywell Inc. | Mass-spring rainhead |
EP0681157A2 (de) * | 1994-05-06 | 1995-11-08 | SIMMEL DIFESA S.p.A. | Zünder für ein Tochtergeschoss, der eine Selbstzerlegungsvorrichtung ohne Verzögerung enthält |
US8443728B2 (en) * | 2011-09-23 | 2013-05-21 | Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense | Impact fuze for a high-spin self-destructing device |
CN111928742A (zh) * | 2020-06-30 | 2020-11-13 | 南京理工大学 | 一种提高擦地炸和自毁作用可靠性的引信 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR779063A (fr) * | 1933-07-17 | 1935-03-29 | Dérivés d'hydrates de carbone et leurs procédés de production | |
FR47195E (fr) * | 1934-04-05 | 1937-02-06 | Anciens Ets Skoda | Fusée percutante extra-sensible |
US2405653A (en) * | 1940-07-09 | 1946-08-13 | Honger Guido | Fuse for automatic destruction of shells |
US2493278A (en) * | 1945-01-17 | 1950-01-03 | Brevets Aero Mecaniques | Combined fuse |
-
0
- BE BE547941D patent/BE547941A/xx unknown
- LU LU33614D patent/LU33614A1/xx unknown
- NL NL93971D patent/NL93971C/xx active
- NL NL207241D patent/NL207241A/xx unknown
-
1956
- 1956-05-17 US US585524A patent/US2871788A/en not_active Expired - Lifetime
- 1956-05-18 CH CH330867D patent/CH330867A/fr unknown
- 1956-05-19 DE DEB40313A patent/DE1006317B/de active Pending
- 1956-05-22 FR FR1153517D patent/FR1153517A/fr not_active Expired
- 1956-05-22 GB GB15811/56A patent/GB785204A/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR779063A (fr) * | 1933-07-17 | 1935-03-29 | Dérivés d'hydrates de carbone et leurs procédés de production | |
FR47195E (fr) * | 1934-04-05 | 1937-02-06 | Anciens Ets Skoda | Fusée percutante extra-sensible |
US2405653A (en) * | 1940-07-09 | 1946-08-13 | Honger Guido | Fuse for automatic destruction of shells |
US2493278A (en) * | 1945-01-17 | 1950-01-03 | Brevets Aero Mecaniques | Combined fuse |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033115A (en) * | 1958-06-12 | 1962-05-08 | Brevets Aero Mecaniques | Nose fuzes of the percussion type including a self-destruction device |
US3112704A (en) * | 1960-12-23 | 1963-12-03 | Rheinmetall Gmbh | Self-destroying fuze for a spinning projectile |
US3270670A (en) * | 1964-02-18 | 1966-09-06 | Brevets Aero Mecaniques | Impact fuzes for spinning explosive projectiles and more particularly basedetonatingfuzes of the type equipped with a mechanical auto-destruction device |
US3410214A (en) * | 1965-12-06 | 1968-11-12 | Oerlikon Buehrle Holding Ag | Percussion fuze |
US3782290A (en) * | 1972-01-19 | 1974-01-01 | Us Navy | Ordnance arming assembly |
US3994230A (en) * | 1974-09-02 | 1976-11-30 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Self-destruction type nose impact fuze for spinning projectiles |
US4449455A (en) * | 1981-05-15 | 1984-05-22 | Gebruder Junghans Gmbh | Inertia fuse with a self-destruct device for use in spinning projectiles |
US4471698A (en) * | 1982-02-25 | 1984-09-18 | Honeywell Inc. | Mass-spring rainhead |
EP0681157A2 (de) * | 1994-05-06 | 1995-11-08 | SIMMEL DIFESA S.p.A. | Zünder für ein Tochtergeschoss, der eine Selbstzerlegungsvorrichtung ohne Verzögerung enthält |
EP0681157A3 (de) * | 1994-05-06 | 1996-07-24 | Simmel Difesa Spa | Zünder für ein Tochtergeschoss, der eine Selbstzerlegungsvorrichtung ohne Verzögerung enthält. |
US5549047A (en) * | 1994-05-06 | 1996-08-27 | Simmel Difesa S.P.A. | Submunition fuse with a nondelay self-destruct firing device |
US8443728B2 (en) * | 2011-09-23 | 2013-05-21 | Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense | Impact fuze for a high-spin self-destructing device |
CN111928742A (zh) * | 2020-06-30 | 2020-11-13 | 南京理工大学 | 一种提高擦地炸和自毁作用可靠性的引信 |
Also Published As
Publication number | Publication date |
---|---|
LU33614A1 (de) | |
GB785204A (en) | 1957-10-23 |
NL93971C (de) | |
CH330867A (fr) | 1958-06-30 |
DE1006317B (de) | 1957-04-11 |
BE547941A (de) | |
FR1153517A (fr) | 1958-03-12 |
NL207241A (de) |
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