US2006575A - Fuse for projectiles - Google Patents

Fuse for projectiles Download PDF

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Publication number
US2006575A
US2006575A US702255A US70225533A US2006575A US 2006575 A US2006575 A US 2006575A US 702255 A US702255 A US 702255A US 70225533 A US70225533 A US 70225533A US 2006575 A US2006575 A US 2006575A
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US
United States
Prior art keywords
carrier
fuse
plunger
recess
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
US702255A
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English (en)
Inventor
Methlin Nicolas Emilien
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.)
Schneider Electric SE
Original Assignee
Schneider et Cie
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 Schneider et Cie filed Critical Schneider et Cie
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Publication of US2006575A publication Critical patent/US2006575A/en
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Classifications

    • 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
    • F42C1/06—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact for any direction of 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
    • F42C15/24—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

Definitions

  • the present invention relates to a delayed arming percussion fuse, constructed in such a mannor as to operate by the drivingrin'of'one of the elements of the firing mechanism (thestriker for example) and by the inertia of the complementary element .(the percussion cap carrier), or viceversah,
  • the new fuse is characterized in-that it comprises, in combination with the front element of the mechanism (the striker) retained by a member withdrawable on impact, suchas a pin,.
  • the percussion cap carrier, ,forming' a plunger guided directly in the fuse body and carrying in its front part-a segment or other like safety member, which is guided withthe plunger over a portion of theqpath from the rear to the front through which the said plunger travels on operation, but
  • the guide between. the plunger-like percussion cap carrier and the fuse body is constructed with a suiiicientlysmall play, or through ,the medium of a fluid-tight joint, such that the plunger forms a piston and its forward movement is restrained by the impeded passage from the frontto the rear thereof of the air or, of an appropriate fluid or liquidcontained in the chamber closed by the front part of the fusebody.
  • Figures2' and 3 are similar sections showing the membersin two successive operative positions.
  • Figure. 5 is a'section along the line, 5--5 ,of Figure 3. s
  • Figure 1 is a section along the axisof the fuse,.
  • the plunger having an upper element a in which is guided conduit e in which may be placed adelay-action composition e
  • the plunger directly guided in the body 11, carries in its front portion a safety member 1, which'moves therewith and is guided in body a over a portion of the, path through which the percussion cap carrier c-d travels from the rear towards the front on operation.
  • the guide for member 1 may bev constituted by an extension of the guide for the percussion cap carrier.
  • the form of 'the example by a safety member 1 and the height to which its guide 7 extends are such that the said member, which is radially withdrawable by movementrelativ'e to the plunger under the action of the centrifugal force, possibly combined with the action: of. a H
  • the clearance between the'plunger c and the cylindrical guiding wall of the fuse body element a is made sufficiently small, or possibly a packing member such as a cup leather or a metal piston the head of ringis provided, so that the plunger will form a' piston and its forward movement will be re-' strained by the'passage towards the rear thereof of the air or any other appropriate fluid confined in the chamber 11
  • the forward'movement of "the plunger 'c for arming is normally ensured through the'medium of .a ring 9 guided within the lower recessed por tion of and adapted for longitudinal movement relative to the said plunger, andsubjected tothe action of a spring 9' bearing at its front end against a collar 9 of the ring, and at its rear end against the'block e. If a, delay-action block such as e is not combined with the fuse, the rear end of the said spring may bear on 'a shoulder of the body a, which shoulder would, at the same time, serve as support for the rear face of the.
  • a groove g provided in the ringg are locat '1 two elements forming springs g intended to engage a shoulder c of the plunger 0 and to hold the ring 9' in the position shown in Figures 2 am 3 after the projectile hasbeen fired.
  • the ring g lags behind by inertia, thereby compressing the spring g1, while the two springs 9 soon as they come opposite the rear large-bore portion 0 of the plunger below shoulder 0 can expand to take up a positionibehind the shoulder c as shown in Figure 2, and thereafter retain ring g .in a fixedfposition relative to the plunger 0. 1
  • the spring J1 expands and carries the ring g'forwardly and, through the medium of the springs 9 the percussion cap carrying plunger c-d.
  • the path of radial outward movement allowed to the member f is limited by flange 0 on the plunger head, which prevents the said member 7 from being jammed against the wall of chamber a? formed in forward portion a of the fuse body and forming a resistance to'the operation of the fuse by inertia.
  • the members are in this position-the fuse is armed and may operate by the driving of the striker into the percussion cap when the I projectile strikes an obstacle by its point. It may also operate by inertia when the projectile strikes an obstacle by its longitudinal surface, the percussion cap carrier then being driven forwardly with the withdrawn safety device'which it carries.
  • the delay-action device in itself may be given various constructional forms.
  • it comprises a bolt 7' v which is normally retained in the position which it has to occupy for direct operation ( Figures'l,
  • a delayed arming percussion fuse mechanism fora projectilaa fuse body provided with an axial bore therein, the upper end of said bore being of a'larger diameter than the remainder thereof so as to form an enlarged recess insaid body, a striker carried by said fuse body with its lower end extending into said recess, means retaining said striker in inoperative position with impact, a percussion cap carrier of plunger-like construction mounted in and indirect sliding contact with the walls of said' axial bore, means for positively moving said carrierthrough said bore to arming position after the projectile has been fired, and a safety member mounted on the upper end of said carrier for'axial movement therewith but movable radially with respect thereto, said safety member also having'direct sliding contact with the walls of said bore and having a portion preventing contact between the striker and the percussion cap until said member is moved radially'outwardly into said recess at the upper end, of its axial movement.
  • a fuse body provided'with an axial bore therein, the upper end of said bore being of .a larger diameter than the remainder thereof so as to form an enlarged recess in said body; a striker carried by said fuse body with its lower end'extending into-said recess, means retaining said striker in inoperative position until impact, a percussion cap carrier of plunger-like construction mounted. in and in direct sliding contact with the walls of said axial bore; a delayaction device-fixed in the lower portion of said axi'al' bore including a block upon which thej'lower end of said carrier rests when in normal unarmed position, means releasable only'after the projectile has been fired for normally.
  • a percussion cap carrier of plunger-like construction mounted in and in direct sliding contact with the walls .of said axialbore, means for :positively. moving said carrier' forward throughlsaid .bore after the projectile has been fired, the clearance between said carrier and the. .walls .ofgsaid. bore being such that the forward movement of said carrier isretarded by a dash: pot action, and a safety member. mounted onthe upper end of said carrier for. axial movement body, a striker carried by said fuse body with its lower end extending into said recess, means re-.
  • a percussion cap carrier of plunger-like construction mounted in and in direct sliding contact with the walls of. saidaxial bore, a safety member mounted on the upper end of said'carrier for axial movement therewith but movable radially with respect thereto, said safety memher also having direct sliding contact with the walls of said bore and having a portion preventing contact between the striker and the percussion cap until said member is moved radially outwardly into said recess at the upper end. of its axial movement, and means for positively limiting the extent of the radial movement of said safety member in said recess so as to prevent contact thereof with the walls ofsaid recess.
  • a permission cap carrier of'plunger-like construction mounted in and in direct sliding contact withthe Walls of said axial bore, means for positively moving said carrier forward through said hereafter the projectile has been, fired,.
  • a safety member mountedon the upper end of said carrier for axial movement therewith but movable radially withxrespect thereto, a spring interposed, between said carrier and safety mem-;
  • said safety member also having direct. sliding contact with the walls of saidbore. and having a portion preventingicontacti.between .the striker and the:
  • a fuse body provided with an, axial bore thereinfa percussion cap'carrier of plunger-likeconstruction mounted inland in direct sliding contact with the walls of said bore,;
  • said carrier having an axial recess formed therein, means releasable only after the projectile has been fired for normally maintaining said carrier in a' rearward'unarmed position, and means formoving'said carrier forward to armed position after firing comprising an inertia ring mounted within said carrier recess for axial movement relative thereto, a spring interposed between said ring and a fixed portion of thefuse body and exerting a forward thrust against said ring, said spring. normally maintaining said; ring in a position adjacentthe forward end of said carrier recess but yielding to the inertia 'of said ring when the projectile is fired to permitsaid ring to'move rearward-relative to said carrier,
  • a delayed arming percussion fuse mechanism for a projectile a fuse body provided with an axial bore therein, a percussion cap carrier of plunger-like construction mounted in and in direct sliding contact with the walls of said bore, said carrier having an axial recess formed therein, a delay-action device fixed in said axial bore behind said carrier including a block upon which the rear end of said carrier rests when in normal unarmed position, means releasable only after the projectile has been firedfor normally maintaining said carrier in said unarmed position, "a tubular extension projecting forwardly from said block into said carrier recess, said extension and block having anaxial flame transmitting conduit therethrough, and means for moving said carrier forward to armed position after firing comprising an inertia ring mounted within said carrier recess for
  • a fuse body provided with an axial bore therein, the forward end of said bore being 1 of a larger diameter than the rej-l mainder thereof so as toform an enlarged recess, a striker carried by said fuse body with its lower end extending into said recess,-a percussion cap carrier mounted in said hole for forward axial movement therein to armed position, means releasable onlyafter the projectile has been fired for normally maintaining said carrier in unarmed position, means for moving said carrier forward to armed position after firing comprising an inertia ring moiuited for axial movement relative to said carrier, a spring interposed between said ring and a fixed portion of the fuse body and exerting a forward thrust against said ring, said spring normally maintaining said ring in a posimember mounted on the forward end of said car-- rier foraxial movement therewith but movable radially with respect thereto, said safety member having a portion preventing contact between said strike
  • a carrier for said percussion cap slidably mount ed within said fuse body, an inertia member mounted for axial movement relatively to said carrier, a spring interposed between said inertia member and a portion of the fuse body, said inertia member normally occupying a'position forward with respect to said carrier but movable rearwardly with respect thereto upon firing of the projectile from'the gun, thereby compressing the spring, means for locking said inertia memher to said carrier in its rearward position, and a locking bolt mounted in said fuse body and.
  • NICOLAS EMILIEN METI-ILIN NICOLAS EMILIEN METI-ILIN.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
US702255A 1933-04-28 1933-12-13 Fuse for projectiles Expired - Lifetime US2006575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR768328T 1933-04-28

Publications (1)

Publication Number Publication Date
US2006575A true US2006575A (en) 1935-07-02

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ID=9184145

Family Applications (1)

Application Number Title Priority Date Filing Date
US702255A Expired - Lifetime US2006575A (en) 1933-04-28 1933-12-13 Fuse for projectiles

Country Status (5)

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US (1) US2006575A (en(2012))
BE (1) BE402463A (en(2012))
CH (1) CH174378A (en(2012))
FR (1) FR768328A (en(2012))
GB (1) GB417288A (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436385A (en) * 1945-02-15 1948-02-24 John C Gillette Delay fuse
US6604467B2 (en) * 1998-04-03 2003-08-12 Michael Alculumbre Safety system for a projectile fuse
US20090205526A1 (en) * 2008-01-07 2009-08-20 Nexter Munitions Micro-machined or micro-engraved safety and arming device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107130B (de) * 1957-01-19 1961-05-18 Andres Rodriguez Villa Aufschlagzuender fuer Geschosse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436385A (en) * 1945-02-15 1948-02-24 John C Gillette Delay fuse
US6604467B2 (en) * 1998-04-03 2003-08-12 Michael Alculumbre Safety system for a projectile fuse
US20090205526A1 (en) * 2008-01-07 2009-08-20 Nexter Munitions Micro-machined or micro-engraved safety and arming device
US8166880B2 (en) * 2008-01-07 2012-05-01 Nexter Munitions Micro-machined or micro-engraved safety and arming device

Also Published As

Publication number Publication date
CH174378A (fr) 1935-01-15
FR768328A (fr) 1934-08-03
BE402463A (en(2012))
GB417288A (en) 1934-10-02

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