US2090457A - Fuse for projectiles - Google Patents

Fuse for projectiles Download PDF

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Publication number
US2090457A
US2090457A US37632A US3763235A US2090457A US 2090457 A US2090457 A US 2090457A US 37632 A US37632 A US 37632A US 3763235 A US3763235 A US 3763235A US 2090457 A US2090457 A US 2090457A
Authority
US
United States
Prior art keywords
fuse
striker
movable member
cap
ring
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
Application number
US37632A
Other languages
English (en)
Inventor
Morpeth William
Heseltine John Chapman Whaley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vinters Armstrongs Ltd
Original Assignee
Vickers Armstrongs Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vickers Armstrongs Ltd filed Critical Vickers Armstrongs Ltd
Application granted granted Critical
Publication of US2090457A publication Critical patent/US2090457A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F42C9/142—Double fuzes; Multiple fuzes combined time and percussion fuzes in which the timing is caused by combustion
    • F42C9/144—Double fuzes; Multiple fuzes combined time and percussion fuzes in which the timing is caused by combustion with ring or spiral combustion elements
    • 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
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • F42C15/26—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means using centrifugal force
    • 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
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge
    • 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
    • F42C9/10—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by combustion
    • F42C9/12—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by combustion with ring combustion elements
    • 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
    • F42C9/142—Double fuzes; Multiple fuzes combined time and percussion fuzes in which the timing is caused by combustion

Definitions

  • a movable safety 5 device normally can be located in such a position that it can be engaged by the direct action striker to prevent the latter from moving rear-- wardly into the priming cap or detonator.
  • the safety member may act as or control a shutter that normally prevents ignition of the main explosive of the fuse.
  • the safety device may be arranged to move out of the path of the direct action striker during flight of the shell, for instance, by centrifugal action.
  • the present invention is, moreover, especially concerned with fuses for small type shells in which there is great difficulty in designing the parts to occupy small space without rendering manufacture too difficult.
  • the main object of the present invention is to achieve the advantages and overcome the defects above referred to.
  • the aforesaid spring is not only in compression between the timing action striker and said priming cap to hold them apart but is at the same time in compression between the movable member or direct action striker and another part of the fuse so as to press the movable member forwardly of the fuse to relieve the pressure of the movable member from a movable safety device of the fuse.
  • This arrangement is combined with a fuse in which the said movable member is cut away between its ends to receive the timing action striker, priming cap and spring.
  • Said movable member also carries a firing point on its inner end.
  • the timing action striker is preferably arranged coaxially with respect to said movable member.
  • the timing action may include a composition ring having a safety zone in one end surface in communication by an aperture through the ring with another composition channel in its opposite end surface and in communication with an escape hole.
  • Figure 1 is a central sectional view of a fuse made in accordance with the invention.
  • Figure 2 is a top plan view of the composition ring
  • Figure 3 is a sectional view on the line 33 on Figure 2;
  • Figure 4 is an underneath plan view of the composition ring
  • Figure 5 is a sectional view on line 5-5 on Figure l with the composition ring removed;
  • Figure 6 is a sectional View on line 6-5 of Figure 5;
  • Figure 7 is a side elevational view of the movable member or direct action striker shown in front elevation in Figure 6.
  • the movable member or direct action striker F having the firing-pin F on its inner end is of light weight and projects forwardly of the remainder of the fuse so that it is struck back on meeting an obstruction.
  • the striker F is hollow and is cut away on each side at its inner part to accommodate a timing action striker H a priming cap H, and a spring H all arranged coaxially with respect to the striker F, the firing a point F of the striker F being located rearwardly of the striker H
  • the striker F is normally prevented from moving rearwardly by the bifurcated end of a movable safety device or bolt 1 which moves radially by centrifugal action after the projectile leaves the gun and when permitted to move by a shaped pin f actuated by a centrifugally operated shutter F.
  • the parts I, f and f are more fully described in the specification of our application No. 440,338.
  • the striker F is supported by the spring H when the bolt 1 has moved out.
  • the shutter f normally separates a priming cap or detonator J from the relay or detonation train D leading to the gaine.
  • the direct action striker is arranged to fire the cap J on impact if this has not been previously ignited by the time fuse.
  • the spring H is in compression between the timing action striker point H and the cap H (which cap is seated upon a shoulder or platform H on the fuse body) so as to hold these parts normally away from each other.
  • This seating of the cap H on the shoulder H is made possible by cutting away the sides of the hollow movable member F and enables the spring H to be also in compression between the fuse body and the movable member or direct action striker F so as to press the member F forwardly to prevent the member F from pressing rearwardly on the movable safety device f hard enough to lock the latter against outward movement during flight of the shell.
  • the reference letter A indicatesthe composition ring which surrounds the reduced and hollow end or spigot B of the fuse body B which is threaded on to the gains D which contains the main explosive elements of the fuse.
  • the ring 'rests upon the annular platform formed by the reducing of the part B a cloth washer B being interposed between the ring and platform.
  • the safety zone channel a is short and arcuate and extends over about 60 to It is formed in the upper end surface of the ring, i. e., in the surface farthest away from the projectile. This channel is connected by a hole a passing through the ring to the main composition channel a formed in the under surface of the ring.
  • the channel a is in the form of a. broken ring extending over about 3l0 so as to leave a blanking space between its ends to cover a powder pellet b in the body B in the safe position of the ring so that in this position the composition in the channel a cannot ignite the powder pellet b.
  • the pellet b serves to fire the powder pellets D
  • the safety zone channel is so-called because it will provide for a sufficient time interval to ensure that the shell will not explode until said shell is a safe distance from the gun.
  • the other channel provides for any practical time interval in conjunction with the time for the safety zone.
  • the safety zone channel a is closed on its outer or upper side by a plate a and the flat surface of a cap E screwed on to the spigot 13 presses the ring against the platform referred to.
  • the composition in the safety channel is ignited by a priming cap H which is itself ignited by a spring supported striker H which sets back or retracts on discharge of the projectile.
  • the channel a is in constant communication with the cap H through fire holes H in the spigot B and through annular grooves H H in the spigot and ring respectively, and then through a channel a in the ring.
  • the lighting point of the safety zone channel i. e. the point adjacent to the channel :1 is provided with a suitable ignition pellet or mealed powder.
  • the lighting point of the safety zone channel is connected by a hole with an escape hole a containing a powder pellet.
  • the ring A is rotatable to vary the fuse timing and for this purpose is provided with circumferential teeth A to engage the setting rack of the fuse setter in automatic guns, or to engage a setting key.
  • the ring and the fuse body may be suitably marked to indicate fuse timings and the safety position of the ring may be determined in relation to a mark on the bolt f.
  • a fuse for a projectile provided with a fuse body, a movable member projecting forwardly from the fuse body, a direct action striker at the inner end of said movable member, a timing action striker normally located at the forward end of a hollow portion within said movable member, a cap also located within the hollow portion of said movable member but supported upon the body of the fuse, said cap being positioned in line with the timing action striker, a spring arranged in compression between the timing action striker and the cap, said spring also serving to hold the said movable member forwardly of the fuse body, and a safety device which normally operates to positively prevent rearward movement of said movable member.
  • a fuse for a projectile provided with a fuse body, a movable member arranged to project forwardly from the fuse body, a direct action striker carried at the inner end of said movable member, a timing action striker and cooperating cap therefor located within an axial cutout portion of said movable member, a spring arranged in effective compression between a portion of the fuse body and the timing action striker, said spring thus serving to hold the timing action striker and cap apart and at the same time urging said movable member forwardly of the fuse body, and a safety device which normally operates to positively prevent rearward movement of said movable member.
  • a fuse for a projectile provided with a fuse body, a movable member arranged to project forwardly from the fuse body, a timing action striker and cooperating cap therefor, a direct action striker provided integrally upon the inner end of said movable member, the latter being between its ends formed with a slot-like aperture for the reception of the timing action striker and the cooperating cap therefor, a seating portion in the fuse body for supporting said cap and for maintaining the cap in alignment with said striker, a spring arranged in compression between said cap and said timing action striker, said spring serving thereby to simultaneously hold said movable member forwardly of the fuse body, and a safety device which normally operates to positively prevent rearward movement of said movable member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Medicinal Preparation (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Air Bags (AREA)
US37632A 1934-09-05 1935-08-24 Fuse for projectiles Expired - Lifetime US2090457A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB188064X 1934-09-05
GB160835X 1935-08-16

Publications (1)

Publication Number Publication Date
US2090457A true US2090457A (en) 1937-08-17

Family

ID=26251778

Family Applications (1)

Application Number Title Priority Date Filing Date
US37632A Expired - Lifetime US2090457A (en) 1934-09-05 1935-08-24 Fuse for projectiles

Country Status (6)

Country Link
US (1) US2090457A (fr)
BE (1) BE411112A (fr)
CH (1) CH188064A (fr)
DE (1) DE679031C (fr)
FR (1) FR794486A (fr)
GB (1) GB445271A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515040A (en) * 1947-12-01 1950-07-11 Us Navy Fuse
US2717552A (en) * 1944-02-10 1955-09-13 Energa Perforating explosive projectile
FR3045812A1 (fr) * 2015-12-22 2017-06-23 Nexter Munitions Dispositif de securite et d'armement reversible pour un engin explosif

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045285B (de) * 1955-01-31 1958-11-27 Junghans Geb Ag Drallgeschosszerlegerzuender

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2717552A (en) * 1944-02-10 1955-09-13 Energa Perforating explosive projectile
US2515040A (en) * 1947-12-01 1950-07-11 Us Navy Fuse
FR3045812A1 (fr) * 2015-12-22 2017-06-23 Nexter Munitions Dispositif de securite et d'armement reversible pour un engin explosif
WO2017109313A1 (fr) * 2015-12-22 2017-06-29 Nexter Munitions Dispositif de securite et d'armement reversible pour un engin explosif

Also Published As

Publication number Publication date
CH188064A (fr) 1936-12-15
DE679031C (de) 1939-07-27
FR794486A (fr) 1936-02-18
BE411112A (fr)
GB445271A (en) 1936-04-06

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