US1530336A - Releasing arrangement at primer safety device in fuse for projectiles - Google Patents

Releasing arrangement at primer safety device in fuse for projectiles Download PDF

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Publication number
US1530336A
US1530336A US679663A US67966323A US1530336A US 1530336 A US1530336 A US 1530336A US 679663 A US679663 A US 679663A US 67966323 A US67966323 A US 67966323A US 1530336 A US1530336 A US 1530336A
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United States
Prior art keywords
safety device
fuse
projectiles
primer
releasing arrangement
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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
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US679663A
Inventor
Wennerstrom Ernst Joha Torsten
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Saab Bofors AB
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Bofors AB
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Publication date
Application filed by Bofors AB filed Critical Bofors AB
Priority to US679663A priority Critical patent/US1530336A/en
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Publication of US1530336A publication Critical patent/US1530336A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact
    • 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
    • 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

Definitions

  • the present invention has for its object a primer safety device in fuses for projectiles and more especially the invention refers to a releasing arrangement at the said primer safety device.
  • Fig. l is a central longitudinal section of a constructional form of a fuse arranged in conformity with the invention;
  • Figs. 2 and 3 represent central longitudinal sections of a lowor (rear) part of such fuses of modified construction.
  • Fig. 1 of the drawing 1 is a primer, 2 the rear part of the fuse, 3 the detonator, a the detonator spring. 5 a ball by means of which the detonator is locked to the fuse body, 6 another locking member, 7 a looking disk, 8 a spring, 9 a plunger, 10 a guiding sleeve, surrounding the plunger and part of the spring, and 11 a flange at the fore end of the said sleeve.
  • the detonator 3 is kept in safety position in the rear part of the fuse by means of the ball 5 which by the locking member 6 is prevented from any inward movement.
  • the locking member 6 is fixed in the detonator shell by means of the disk 7 or in any other suitable manner.
  • a central channel is arranged which is continued in the detonator by the guiding sleeve 10, fixed at the rear part of the detonator shell by means of screw threads. This channel and sleeve enclose the spring 8 and the plunger 9, as shown in the drawing.
  • the spring 8 rests at its rear end against a flange in the detonator shell and at its fore end against the plunger 9, the fore end of which in its order rests against the flange 11 of the guiding sleeve 10.
  • the spring 8 is compressed by the plunger 9 which strikes against and releases the member 6 which in its turn pushes away the disk 7.
  • the ball 5 is then pressed inwards releasingthe detonator which now is pushed forwards by its spring 4, so that it encloses the primer; the safety device is thus released.
  • Fig. 2 the fuse body at the rear end is provided with an opening closed by a disk inserted therein and removed by the released locking member 6, thereby permitting the said member and the ball to drop out through the opening.
  • the plunger 9 and the opening 12 at the end of the channel in the detonator shell are of a conical or contracted shape, whereby the plunger 9 after having thrown out the locking member from the fuse will be retained in the detonator shell.
  • a locking member for the safety device and a movable member free to move under the force of inertia on the firing of the gun, and adapted to impart a thrust to the said locking member to release the same and the safety device.
  • a safety device comprising a removable disc to permit dis charge of the locking member on the firing of the gun.
  • a safety device comprising means for retaining the said movable member in fixed position after the release of the safety device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Description

March 17. 1925.
E. J. T. WENNERSTRGM RELEASING ARRANGEMENT AT PRIMER SAFETY DEVICE 1N FUSE FOR PROJECTILES Filed Dec. 10, 1923 fave/1 for Fatented Mar. 17, 1925.
ERNST JO'HAN TO-RSTEN WENNERSTBfiM, OF BOFORS, SWEDEN, ASSIGNOR TO AKTIE- BOLAGET BOFORS, OF BOFORS, SVTEDEN, A LIMITED COMPANY OF SWEDEN.
RELEASING ARRANGEMENT AT PRIMER SAFETY DEVICE IN FUSE FOR PRQJECTILES.
Application filed. December 10, 1923. Serial No. 679,663.
T all whom it may concern:
Be it known that I, ERNST JOHAN Ton- STEN ENNERSTRtlM, subject-of the King of Sweden, residing at Bofors, Sweden, have invented certain new and useful Improvements in Releasing Arrangements at Primer Safety Devices in Fuses for Projectiles, of which the following is a specification.
The present invention has for its object a primer safety device in fuses for projectiles and more especially the invention refers to a releasing arrangement at the said primer safety device.
The invention is illustrated in the accompanying drawing where Fig. l is a central longitudinal section of a constructional form of a fuse arranged in conformity with the invention; Figs. 2 and 3 represent central longitudinal sections of a lowor (rear) part of such fuses of modified construction.
In Fig. 1 of the drawing 1 is a primer, 2 the rear part of the fuse, 3 the detonator, a the detonator spring. 5 a ball by means of which the detonator is locked to the fuse body, 6 another locking member, 7 a looking disk, 8 a spring, 9 a plunger, 10 a guiding sleeve, surrounding the plunger and part of the spring, and 11 a flange at the fore end of the said sleeve.
The detonator 3 is kept in safety position in the rear part of the fuse by means of the ball 5 which by the locking member 6 is prevented from any inward movement. The locking member 6 is fixed in the detonator shell by means of the disk 7 or in any other suitable manner. In the rear part of the detonator shell a central channel is arranged which is continued in the detonator by the guiding sleeve 10, fixed at the rear part of the detonator shell by means of screw threads. This channel and sleeve enclose the spring 8 and the plunger 9, as shown in the drawing.
The spring 8 rests at its rear end against a flange in the detonator shell and at its fore end against the plunger 9, the fore end of which in its order rests against the flange 11 of the guiding sleeve 10.
At the firing of the gun the spring 8 is compressed by the plunger 9 which strikes against and releases the member 6 which in its turn pushes away the disk 7. The ball 5 is then pressed inwards releasingthe detonator which now is pushed forwards by its spring 4, so that it encloses the primer; the safety device is thus released.
In Fig. 2 the fuse body at the rear end is provided with an opening closed by a disk inserted therein and removed by the released locking member 6, thereby permitting the said member and the ball to drop out through the opening. 7
In the fuse illustrated in Fig. 3 the plunger 9 and the opening 12 at the end of the channel in the detonator shell are of a conical or contracted shape, whereby the plunger 9 after having thrown out the locking member from the fuse will be retained in the detonator shell.
Having now particularly described the nature of my invention and the manner of its operation, what I claim is:
1. In a primer safety device for the fuses of projectiles, a locking member for the safety device, and a movable member free to move under the force of inertia on the firing of the gun, and adapted to impart a thrust to the said locking member to release the same and the safety device.
2. A safety device according to claim 1, comprising a removable disc to permit dis charge of the locking member on the firing of the gun.
3. A safety device according to claim 1, comprising means for retaining the said movable member in fixed position after the release of the safety device.
In testimony whereof I my ture in presence of two witnesses.
.ERNST JOHAN TORSTEN WENNERSTROM.
Witnesses:
Q. OARLEN, N. THt'mING.
signa-
US679663A 1922-12-20 1923-12-10 Releasing arrangement at primer safety device in fuse for projectiles Expired - Lifetime US1530336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US679663A US1530336A (en) 1922-12-20 1923-12-10 Releasing arrangement at primer safety device in fuse for projectiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE107232X 1922-12-20
US679663A US1530336A (en) 1922-12-20 1923-12-10 Releasing arrangement at primer safety device in fuse for projectiles

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953948C (en) * 1952-01-25 1956-12-06 Die Entwicklung Von Erfindunge Detonator for twistless hollow charge projectiles with tail unit
US3094934A (en) * 1960-07-29 1963-06-25 William E Anthony Practice mortar shell and fuse assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953948C (en) * 1952-01-25 1956-12-06 Die Entwicklung Von Erfindunge Detonator for twistless hollow charge projectiles with tail unit
US3094934A (en) * 1960-07-29 1963-06-25 William E Anthony Practice mortar shell and fuse assembly

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