US2032960A - Timing mechanism for projectiles - Google Patents

Timing mechanism for projectiles Download PDF

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Publication number
US2032960A
US2032960A US672702A US67270233A US2032960A US 2032960 A US2032960 A US 2032960A US 672702 A US672702 A US 672702A US 67270233 A US67270233 A US 67270233A US 2032960 A US2032960 A US 2032960A
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United States
Prior art keywords
projectile
timing
coupling
fuse
projectiles
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
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US672702A
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English (en)
Inventor
Varaud Andre
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Individual
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Individual
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Publication date
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Publication of US2032960A publication Critical patent/US2032960A/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
    • F42C17/00—Fuze-setting apparatus

Definitions

  • This invention relates to improvements in machines for timing clockwork mechanical fuses of projectiles.
  • the invention has for its object to provide a mechanism which can engage the time-setting device of the fuse in any angular position without depending upon the presence of angularly spaced serrations or grooves on said device.
  • Another object of the invention is to provide a mechanism, the action of which will not be affected by incorrect centering of the-timing device on the fuse.
  • a further object of the invention is to p'rovide a mechanism of the kind in question in which the clamping of the projectile and the engaging of the'mechanism with the time setting device of the fuse can be effected by the movement of a single member.
  • the invention consists in providing in a mechanism of the kind in question a projectile holder, means for clamping the projectile in the holder, a coupling member capable of entering into driving engagement with the timing device of the fuse in any angular position thereof, said member preferably carrying means for incising said device, and means for simultaneously operating the clamping means to lock the projectile in the holder and for moving the coupling member 'into engagement with the timing device of the fuse.
  • the coupling member is rotated by a driving means capable of imparting a predetermined "setting and preferably this driving meansis connected to the coupling through a connection permitting limited axial misalignment between the said parts.
  • Fig. 1 shows in perspective the coupling members gripping the end of a projectile.
  • Fig. 2 is a corresponding detail view.
  • Figs. 3 and 4 show plan views of modified forms of the end of the projectile.
  • Fig. 5 is a section of the complete device.
  • Fig. '6 illustrates a modification in plan and partly in section
  • the tubular member 2 can rotate on its axis at the requisite speed of rotation which can be transmitted to it by any suitable means-for instance through the driving members of a timing apparatus.
  • the projectile to be timed terminates in a cylindrical portion 5 rotatable on its axis and the rotation of whichproduces the winding of the clock-work of the fuse, that is to say eiTects the timing of the projectile.
  • Fig. 2 which represents the cylindrical part 5 of .the projectile seen from the end 15 and the positions occupied by the four milling wheels lround this part, the respective distance between the edges of two oppositemilling wheels is less than the diameter of the cylindrical part 5, so that by forcing this cylindrical part of the "20 projectile into the coupling member so as to bring it into the position illustrated in Fig. 1, the four milling wheels are obliged to slightly incise this part 5, thus making four grooves therein.
  • Fig. 5 of the projectile according to one of the forms of construc- 535 tion in Figs. 3 or4.
  • the form of construction of Fig. 3 shows a cylindrical part 6 provided with circular grooves facilitating. the penetration of the cutting edges of the milling wheels.
  • Fig. 4 the circular grooves are replacedby screw-cutting 4o 1 which is easier to work.
  • pivot IQ of the coupling member acts on the latter through a circular groove 23, in the way in which a clutch is operated for instance, that is to say, by means allowing of producing an axial displacement of the member In without preventing it from rotating on itself.
  • this hand actuation is replaced by a quicker and simpler automatic driving, which consists in the arrangement of a plunger 25 which a coil 26 can attract under the influence of an electric current and against the action of a spring 21, a portion of which is shown and the end of which not shown would be attached to a fixed point of the framework of the timing apparatus.
  • the current for the coil is conveyed through a wire 28 which passes through the coil, in order to pass out again therefrom through a Wire 29 and close the circuit to earth through the framework of the timing apparatus, to which the conductor 29 will be connected through the intermediary of the body of the projectile.
  • this arrangement causes the coil to abandon the plunger core 25 to the action of the spring 2'! as long as no projectile is introduced into the apparatus.
  • the plungr core is attracted by the current established by the contact of the body of the projectile with the conductor 29 and the locking and coupling operation is instantaneously accomplished.
  • the projectile will remain locked and coupled as long as the electric circuit of the coil 26 is closed, a switch should be provided enabling the projectile when once timed to be unlocked and uncoupled, which switch may for instance be so arranged on the timing apparatus as to open automatically when the timing is terminated.
  • the projectile can be introduced into the timing apparatus without needing to occupy in relation to said apparatus such a position that its fuse and the coupling members must be face to face like a turnscrew and the screw on which it is destined to act.
  • the projectile is immediately locked, gripped by the coupling member and ready to be timed in an extremely short time in comparison with the devices necessitating an adjustment of the projectile and of the timing apparatus.
  • an intermediate member 35 and a socket 36 Between the head 33 and the shaft 34 are two members, an intermediate member 35 and a socket 36, the intermediate member 35 being illustrated in perspective in Fig. '7, from which it appears that this member has two ribs or dovetail guides 31 and 38, also shown in Fig. 1.
  • the head 33 has an incision corresponding to the rib 31 and the socket 36 has an incision correspond.- ing to the rib 38, the latter incision being designated 39 in the drawings.
  • the head 33 and the socket 36 form one rigid whole in the axial direction and by means of the groove 40 of the socket 36, one can displace it on the shaft 34 so as, when once the projectile is presented to the milling wheels 32, to engage these latter above its screw-cut part 3
  • the two latter are enabled to move, one in relation to the other in planes perpendicular to their axis of rotation in no matter what direction in relation to the orthogonal system of axes formed by the ribs 31 and 38. If then, at the moment that the milling wheels 32 are caused to engage on the screw-cutting 3
  • the head of the projectile When the timing is finished, the head of the projectile is released and it is necessary that the head 33, eventually displaced by the previous timing operation, should resume its position coaxial with the socket 36 and shaft 34.
  • the head 33 and socket 36 include cylindrical parts 4
  • This cylinder is surrounded by a spiral spring 43, the purpose of which is to bring these parts back into axial relation, when owing to a slight displacement of the above parts the said spring has been distorted.
  • this spiral spring can be replaced by other elastic members, in particular by springs placed according to the generating lines of the cylinder formed by the parts 4
  • the intermediate member could comprise one of the grooves or even the two grooves, the head 33 or the socket 36, both these members being then provided with corresponding ribs.
  • mechanism for coupling the setting device of a projectile, while the latter is held stationary, to a rotary drive shaft said mechanism comprising a rotary member carrying members capable of incising and becoming integrally connected to the fuse-setting device, said rotary member being slidable substantially co-aXially of the fuse; a sleeve slidable upon and driven by the drive shaft, said sleeve and shaft being co-axial with the rotary member, an Oldham coupling disc connecting the sleeve and the rotary member; and a spring cooperating with similar cylindrical surfaces of the rotary -member, Oldham coupling disc and sleeve to bias these parts into co-axial alignment.
  • a machine for timing mechanical fuses of projectiles comprising a projectile holder; an eccentric in said holder capable of clamping engagement with the flank of the projectile at any point around a circumference of said flank; a
  • coupling member slidable relatively to the projectile and having means for incising and becoming integrally connected to the fuse-timing device of the projectile in any position of rotation of the latter about its longitudinal axis; means for simultaneously rotating the eccentric to clamp the projectile in the holder and for sliding the coupling member into engagement with the tim ing device, and means for rotating the coupling member.
  • incising means consists of a plurality of knife edge wheels supported in the coupling member on transverse axes and adapted to cut into and to grip the timing device of the fuse.
  • a machine for timing mechanical fuses of projectiles comprising a projectile holder; means for clamping the projectile in the holder in any position of rotation about the common axes of the projectile and holder; a rotary shaft for imparting setting movements to the timing device of the fuse; a coupling member slidable relatively to the projectile and having means for incising and becoming integrally connected to the timing device of the fuse in any position of rotation of the latter about its longitudinal axes; and means for simultaneously operating the clamping means and for sliding the coupling member in engagement with the timing device.
  • a machine for timing mechanical fuses of projectiles comprising a projectile holder; means for clamping the projectile in the holder in any position of rotation about the common axes of the projectile and holder; a rotary shaft for imparting setting movements to the timing device of the fuse; a coupling member slidable relatively to the projectile and having means for incising and becoming integrally connected to the timing device of the fuse in any. position of rotation of the latter about its longitudinal axes; means for simultaneously operating the clamping means and for sliding the coupling member in engagement with the timing device; and an Oldham coupling between the rotary shaft and the coupling member, said Oldham coupling having resilient means to hold these parts in co-axial alignment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Mechanical Operated Clutches (AREA)
US672702A 1932-06-05 1933-05-24 Timing mechanism for projectiles Expired - Lifetime US2032960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH407845X 1932-06-05

Publications (1)

Publication Number Publication Date
US2032960A true US2032960A (en) 1936-03-03

Family

ID=4514385

Family Applications (1)

Application Number Title Priority Date Filing Date
US672702A Expired - Lifetime US2032960A (en) 1932-06-05 1933-05-24 Timing mechanism for projectiles

Country Status (5)

Country Link
US (1) US2032960A (fr)
CH (2) CH165188A (fr)
DE (1) DE612567C (fr)
FR (1) FR756180A (fr)
GB (1) GB407845A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450553A (en) * 1943-06-18 1948-10-05 United Shoe Machinery Corp Fuse setting mechanism for guns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450553A (en) * 1943-06-18 1948-10-05 United Shoe Machinery Corp Fuse setting mechanism for guns

Also Published As

Publication number Publication date
CH165188A (fr) 1933-11-15
GB407845A (en) 1934-03-29
DE612567C (de) 1935-04-27
CH167714A (fr) 1934-02-28
FR756180A (fr) 1933-12-06

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