US1974523A - Apparatus for timing mechanical fuses of projectiles - Google Patents

Apparatus for timing mechanical fuses of projectiles Download PDF

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Publication number
US1974523A
US1974523A US672701A US67270133A US1974523A US 1974523 A US1974523 A US 1974523A US 672701 A US672701 A US 672701A US 67270133 A US67270133 A US 67270133A US 1974523 A US1974523 A US 1974523A
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Prior art keywords
timing
projectile
motor
abutment
projectiles
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Expired - Lifetime
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US672701A
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English (en)
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Varaud Andre
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C17/00—Fuze-setting apparatus

Definitions

  • the invention relates to improvements in apparatus for timing projectiles provided with clockwork operated fuses ofthe kind comprising a member for rotating the key of a projectile mechanically connected to a manually operated rotary driving member, the angular displacement of which is limited by a ixed abutment and by a movable stop carried by a graduated dial adapted to be rotated by hand independently of the driv- ⁇ 1i) ing member and to be immobilized in any angular position, the winding of the power spring of the clockwork and the regulation of the time of ignition of the projectile being effected simultaneously by the rotation of said key,
  • a still further object of the invention is to provide a machine "of the kind in question which will automatically re-set the parts to initial po sition as soon as the time setting is completed.
  • FIG. 1 is a plan view of the apparatus partly in horizontal section and inwhich the electric circuits are diagrammatically indicated.
  • Fig, 2.., is ⁇ a detail diagram oi the electric drive
  • the apparatus represented is composed of a box l, inside which are the usual members of a timing apparatus, namely" i A toothed wheeI 2 carrying a mobile abutment not illustrated which lov the hand wheel 3, through the intermediary of ⁇ a Worm gear e, con
  • the projectile 9 can be introduced Vinto the apparatus into asocket provided for' that pur pose, while the projectile canl be' pressed ⁇ therein su by anl eccentric 13 and the end 14 of thefuseis gripped by any driving member 15 also not forming part of the invention.
  • VTheV eccentricl and the driving memberlintended to couple thehshaft 8 to the end 1 4 of 85 the fuse are connected together by a set of levers 16, 17, 18 so provided that by acting onl the lever 1 3 so .as to rotate it anticlockwise one simultaneously applies thedriving member15 against the end 14 of the fuseand the eccentric 13 against 90v the body of the projectile, the movement of the f lever 18 inthe direction indicated being effected, by moans of a/plunger 19 adapted to be attracted byv a coil 20.
  • the eccentric 13, therdriving member 15, the levers 16, 17, 18 and 95, the plungerw are in the timing position, that is to say inthe position-in which the projectile is immobilized in the apparatus and the end 14 of the fuse gripped ,and drawn by the member 15,.
  • the coil V20 is electriied, a spring 2l drawingthe plunger core 19 therefrom as soon as it ceases to be electrified, thus releasing the body of the projectile andthe end of the'v fuse,
  • the motor 10 possesses 'three terminals, one, 22, for the arrival of the current which a con-A ductor conveys at 23 from the post of control, two others, 24, 25 for the departure of the current, one of them, l24: corresponding to a directionpof working of the motor, which I will call the direcf-v tiony of replacement at zero, and the other, 25, to
  • Vfurther comprises a finger 39 *LofV f an armature', which is connected-by'means oa i ringl40 and of ra correspondingbrush, tothe conev i ductor 32 for example,-'Conni-:c,tingv itfto the signal y'33, Whereas the other armature 4l yisi connected by a ring 42 and a lcorresponding brush? to' the; y conductorrSO.”
  • the armaturaftowhich the fingery vr+39 is "secured,v is yformedjof 'f aA springii. Itis 1,
  • the apparatus being at rest, that is to say nol projectile being introduced therein and the abutments 37 and 38 touching each other, themembers are said to be atnzero.
  • the indicator 5 actuated from the post of direc'- ⁇ tion indicates a timing'value through'the displacement of an index giving ameasurement of the displacement which the abutment 3 6 of' the Wheel 2 is to be made to perform, it suflices for the gunner of the apparatus to displace the abute ment to the extent indicated, by actuating to this eiiect the hand wheel 3.
  • the timing apparatus constantly regulatedf'in correspondence with the momentary timing value which is transmitted4 to him. "f g f At the moment that the timing'V is to be lef-v fected, which moment corresponds, in'a quick nring, to the moment of the 'signal to ii're,7a
  • the ter-r mina-1.22, the motor 10, the terminal. 24, the cony n ductor: 261,;fthe abutment 28 of thcplunger core 23 yand the earth, said circuit corresponding to the'directionof action of the motor, called return'to zero, the purpose of which direction being te apply, theabutment 3,7 of 'theywheel e against sults in .a 4closing or; the f circuit y previously styled a, and this throughthe contact at the mass cre'-l atedby the rojectile by means; of the conductor and the* plunger core .'19 is attractedinto the ther driving member of timing l15. kButat the sametime, theabutment 2,8 of the plungercore v.positiony represented. rThe projectilel immedi-- i ately'lockedzby Vthe eccentricl and gripped by.r
  • One will therefore preferably employ the apparatus While constantly leaving therein a projectile in timing position, so that the order given from the post of direction may be immediately perceived through the illuminating of the signal, the timing being then effected Without loss of time. It is clear, on the other hand, that the gunner having at his disposal after timing for extracting the projectile only the time taken by the members of the apparatus to stop and change their direction so that he must proceed with this operation Without delay at the instant that the iiring signal is extinguished.
  • the motor l0 should be of a type, capable of maintaining the Wheel 6 at zero, and of remaining under tension Whilst still being immovable, said motor however does not have to perform a large number of revolutions on itself, but at the most only one or two revolutions, so that it should be constructed as a servo-motor capable of instantaneously furnishing a relatively powerful couple.
  • the action of such a servo-motor is therefore as it were instantaneous, that is to say that either the timing, or the return to zero, is eiected in a fraction of a second separated by the short instant arising from the inertia of the masses in action.
  • Apparatus for timing mechanical fuses of projectiles comprising a projectile holder, means for locking the projectile in operative position in said holder, a driving member adapted to be coupled with the fuse to set the timing thereof, means including an electromagnet for actuating the locking means and the coupling of the drivingA member with the fuse, an electric motor adapted to drive said member, means controlling the amount of drive of said member, and an electrical system in which said electromagnet and motor are connected and including movable contacts operated by the electromagnet and the motor for determining actuation of the locking means, coupling .of the driving member, driving of the same in the timing direction, and restoration of the apparatus to initial condition, in proper sequence.
  • the electromagnet has an armature mechanically connected to the projectile locking means and the drive member, and including a spring tending to hold said armature in projectile releasing position and to retract the drive member from the fuse.
  • the electromagnet has its energizing coil arranged in a circuit oi the electrical system containing a contact which is closed by inserting a projectile in the holder and also containing a kmovable Contact which is opened by the electric motor when the timing of the fuse is completed.
  • Apparatus according to claim 1 in which the electromagnet carries a movable contact on its armature adapted in one position to close a circuit of the electrical system for driving the motor in time-setting direction when the operations of locking the projectile in the holder and the coupling of the driving member to be fused are terminated, and in another position to reverse the direction of rotation of the motor when the projectile has been released and the driving member disengaged from the fuse.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US672701A 1932-06-05 1933-05-24 Apparatus for timing mechanical fuses of projectiles Expired - Lifetime US1974523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH407843X 1932-06-05

Publications (1)

Publication Number Publication Date
US1974523A true US1974523A (en) 1934-09-25

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ID=4514384

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US672701A Expired - Lifetime US1974523A (en) 1932-06-05 1933-05-24 Apparatus for timing mechanical fuses of projectiles

Country Status (5)

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US (1) US1974523A (forum.php)
CH (1) CH162177A (forum.php)
DE (1) DE615352C (forum.php)
FR (1) FR756179A (forum.php)
GB (1) GB407843A (forum.php)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442401A (en) * 1943-01-27 1948-06-01 United Shoe Machinery Corp Fuse setter and rammer
US2450553A (en) * 1943-06-18 1948-10-05 United Shoe Machinery Corp Fuse setting mechanism for guns
US2451764A (en) * 1941-06-18 1948-10-19 Molins Machine Co Ltd Fuse setting apparatus
US2823587A (en) * 1942-11-28 1958-02-18 George A Chadwick Loading and ramming mechanism for semi-automatic guns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451764A (en) * 1941-06-18 1948-10-19 Molins Machine Co Ltd Fuse setting apparatus
US2823587A (en) * 1942-11-28 1958-02-18 George A Chadwick Loading and ramming mechanism for semi-automatic guns
US2442401A (en) * 1943-01-27 1948-06-01 United Shoe Machinery Corp Fuse setter and rammer
US2450553A (en) * 1943-06-18 1948-10-05 United Shoe Machinery Corp Fuse setting mechanism for guns

Also Published As

Publication number Publication date
GB407843A (en) 1934-03-29
DE615352C (forum.php)
CH162177A (fr) 1933-06-15
FR756179A (fr) 1933-12-06

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