US1973604A - Projectile - Google Patents

Projectile Download PDF

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Publication number
US1973604A
US1973604A US679256A US67925633A US1973604A US 1973604 A US1973604 A US 1973604A US 679256 A US679256 A US 679256A US 67925633 A US67925633 A US 67925633A US 1973604 A US1973604 A US 1973604A
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US
United States
Prior art keywords
projectile
gun
core
basal member
calibre
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
US679256A
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English (en)
Inventor
Brandt Edgar William
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.)
Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US1973604A publication Critical patent/US1973604A/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
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/064—Sabots enclosing the rear end of a kinetic energy projectile, i.e. having a closed disk shaped obturator base and petals extending forward from said base

Definitions

  • the projectile comprises peripheral projections fitting in the grooves oi a taper gun.
  • the gases act on the rear surface of the projectile, the area of which is increased by that of the projections, which latter also serve to produce a close fit.
  • the projections are progressively driven-in by the walls of the bore and finally become flush with the outer profile of the projectile when the latter reaches the muzzle of the taper gun.
  • the present invention aims at providing means for increasing the initial velocity and penetrative power of projectiles, in order to remedy the aforesaid drawbacks, by imparting an increased initial velocity to projectiles which are fired in an ordinary cylindrical gun, whether of the rifled, smooth-bore or mixed type, and, at the same time, increasing their penetrative effect for a given velocity.
  • the means of the present invention are chiefly noteworthy in that they comprise a propulsive basal member which surrounds the rear end of the projectile and presents to the propellant an active surface of larger area than the actual rear face of the projectile, said member being arranged so as to detach itself from the projectile on issuing from the gun.
  • the propulsive basal member has an outside diameter larger than that oi! the projectile, which it centres in the gun by keeping it always out of contact with the walls of the bore.
  • the basal propulsive member oi the invention engages in the rifling grooves and imparts the rotational movement to the projectile to which it remains continuously attached until it issues from the muzzle.
  • Still a further feature of the invention is that 55 the projectile is provided, at the rear, with a core the mass of which is heavy in relation to the mass of the forward portion oi the projectile.
  • Fig. 1 is a diagrammatic sectional elevation of a projectile provided with the device according to the invention and mounted in a socket of the ordinary type;
  • Fig. 2 is a cross section of the propulsive basal member along the line 2-2 of Fig. 1;
  • Fig. 3 is a sectional elevation of the projectile issuing from the gun, at the moment of detachment of the propulsive basal member;
  • Figs. 4 to 8 are views, similar to Fig. 1, of constructional modifications
  • Fig. 9 is a diagrammatic view of an ordinary projectile striking obliquely against an armour plate.
  • Figs. 10 and 11 are cross sections of projectiles incorporating the devices according to the invention.'
  • the device is supposed to be applied to a bullet 1 adapted to be fired bymeans of a musket, automatic firearm, pistol or other means of discharge.
  • the bullet l of smaller calibre than the internal diameter 2 of the weapon, is mounted in a propulsive basal member 3 intended, in the 1 case of a rifled weapon, to engage in the grooves of the bore and to impart rotational movement to the bullet, to which it is secured in a suitable manner and which, at the same time, it retains in the centred position.
  • the member 3 is so arranged that it becomes detached from the bullet on leaving the gun 4. Centrifugal force can be utilized, with advantage, for this purpose, the action of said force being facilitated by preparing for the disintegration of the member 3 by other suitable manner.
  • the rear bearing surface 6 of the projectile 1 against the member 3 is preferably tapered
  • the rear surface of the said member, facing thecartridge is preferably in the form of a cup 7, with domedbottom, in order to facilitate the detachment of the member 3, on leaving the muzzle, by the blowing action of the propellent gases, as shown in Fig. 3.
  • the resistance of the air adds its actionto that of the gases in effecting the detachment of the basal member.
  • the contact surfaces of the projectile and basal member may, if desired, be provided with ridges vor indentations arranged so that the projections on the one engage in depressions in the other, in order to ensure positive actuation of the projectile by themember 3.
  • I of the gases when the shot is fired Its external weight, with a view to lowering the amount of energy required for its propulsion, whilst main,- taining suflicientstrength to stand the pressure form is designed so as to facilitate its dislodgment from the 'breech8, whenthe shot isfired,
  • the member 3 may be fitted with a wad 10 (Fig. 4) of graphitized asbestos, or other material calculated to reduce friction to a minimum and thus lengthen the life of the bore.
  • the entire member 3 may also be made of suitable material, moulded or compressed in the hy- '-'draulic press, so as to offer to the propulsive effect a sufflcient resistance, combined with maximum staunchness and minimum friction, enabling it to play its allotted part.
  • the member 3 may also be provided with pe- 'rlpheral grooves 11 (Fig. 5).
  • the basal member comprises a washer 10 arranged on a mount 12 enchased in a neck 13 of the bullet 1.
  • a ring or fitting 14 may, if desired, be located in another neck 15 in the bullet 1, with a view to assisting to guide the latter and to maintain a close fit between it and the bore.
  • Fig. 8 shows the device according to the inventlon applied to an explosive projectile 1, mounted in a cartridge 8 and provided with a bursting fuse 16.
  • projectiles in accordance with the invention preferably comprise a rear core 18 (Figs. '7, 10 and 11) of material of high specific gravity, and a nose or casing 19 of relatively low 1 mass and resistance, so that the deflection efl'ect transmitted to the core 18, in the event of oblique impact with an obstacle, such as an armour plate 20, 20', is practically nil.
  • the material of the core is preferably concentrated in a minimum of volume and length, andwill approximate, as
  • cylindrical corev with taper casing 19 When this casing is formed by'a shell which en- I closes the core 18, the frontal portion may be empty, or filled with a light and easily friable,
  • asubstance which is capable of increasing the coeflicient of friction between the armour plate and the heavy core of the projectile at the moment of impact.
  • the projectile 1 will be able to preserve its optimum aerodynamic form, and its passage through the air will not be hampered by any more or less projecting device such as collars or pads.
  • the grooves in the gun should be of easy pitch and free from acute angles.
  • the herein described device is applicable to arms of the most diversified types, as employed in the infantry, artillery or navy and using any kind of propellant irrespective as to whether the same be powder, compressed air, liquefied gas or the like, the basal member being of suitable design in each case.
  • a projectile comprising a body, a core adjacent the part of larger diameter of said body, the mass of said core being high in relation to that of the remaining part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun.
  • a projectile comprising a body, a core in the rear part of said body, the mass of said core being high in relation to that of the remaining part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun.
  • a projectile comprising a forwardly tapering body said body having a rear part the mass of which is high in relation to that of the forward part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun.
  • a projectile comprising a body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun, and a core adjacent the part of larger diameter of said body, the mass of said core being high'in relation to that of the remaining part of the body and being moreover so calculated that the moment of inertia of the projectile is sufficiently increased to compensate for the lack of stability arising from any incompatibility of the of the gun with the reduced calibre of the projectile.
  • a projectile comprising a body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the'area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun, and a core in the rear part of said body, the mass of said core being high in relation to that of the remaining part of the body and being moreover so calculated that the moment of inertia of the projectile is sufliciently increased to compensate for the lack of stability arising from any incompatibility of the rifiing of the gun with the reduced calibre of the projectile.
  • a projectile comprising a forwardly tapering body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun, and a core in the rear part of said body, the mass of said core being high in relation to that of the remaining part of the body and being moreover so calculated that the moment of inertia of the projectile is sufficiently increased to compensate for the lack of stability arising from any incompatibility of the riding of the gun with the reduced calibre of the projectile.
  • a projectile comprising a body, a forwardly pointed perforating core adjacent the part of larger diameter of said body, the mass of said core being high in relation to that of the remaining part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun.
  • a projectile comprising a body, a forwardly pointed perforating core in the rear part of said body, the mass of said core being high in relation to that of the remaining part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun.
  • a projectile comprising a forwardly tapering body, a forwardly pointed perforating core in the rear part of said body, the mass of said core being high in relation to that of the forward part of the body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and beingmoreover adapted to center said body in the gun and to become detached from the body on issuing from the gun,
  • a projectile comprising a body, a propulsive basal member enclosing the rear portion of the body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gunand to become detached from the body on issuing from the gun, and a forwardly pointed perforating core adjacent the part of larger diameter of said body, the mass of said core being high in relation to that of the remaining part of the body and being moreover so calculated that the moment of inertia of the projectile is sumciently increased to compensate for the lack of stability arising from any incompatibility of the rifling of the gun with the reduced calibre of the pro ectile.
  • a projectile comprising a body, a propulsive basal member enclosing the rear portion of th body and presenting to the propellant an active surface exceeding the area of the rear face of the body, said basal member having a larger outside diameter than the calibre of the body and being moreover adapted to center said body in the gun and to become detached from the body on issuing from the gun, and a forwardly pointed perforating core in the rear part of said body, the mass of said core being high in relation to that of the remaining part of the body and being moreover so calculated that the moment of inertia of the projectile is sufficiently increasedto compensate for the lack of stability arising from any incompatibility of the rifling of the gun with the reduced calibre of the projectile.
  • the mass of said core bein: high in relation to that of the remaining part 01 the body and being moreover so calculated that the moment 01' inertia of the projectile is sumciently increased to compensate for the lack of stability arising from any incompatibility of the riiiing or the gun with the reduced calibre of the projectile.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US679256A 1932-07-19 1933-07-06 Projectile Expired - Lifetime US1973604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR171418X 1932-07-19

Publications (1)

Publication Number Publication Date
US1973604A true US1973604A (en) 1934-09-11

Family

ID=8877384

Family Applications (1)

Application Number Title Priority Date Filing Date
US679256A Expired - Lifetime US1973604A (en) 1932-07-19 1933-07-06 Projectile

Country Status (5)

Country Link
US (1) US1973604A (it)
BE (1) BE397466A (it)
CH (1) CH171418A (it)
DE (1) DE610298C (it)
GB (1) GB410326A (it)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616372A (en) * 1945-08-02 1952-11-04 Rudolph O Frantik Projectile
US2672814A (en) * 1949-10-07 1954-03-23 Schlumberger Well Surv Corp Fluid sealing and burr elimination projectile for perforator guns
US2761348A (en) * 1952-04-30 1956-09-04 Portable Ind Inc Centering and guiding means for pins, studs, and like fastening elements
US2776621A (en) * 1954-06-28 1957-01-08 Rosenblatt Jordan Projectile
US2820412A (en) * 1948-10-20 1958-01-21 Jr Reinier Beeuwkes Projectile for firearms
US2983225A (en) * 1944-06-30 1961-05-09 Nelson A Walker Projectile
US2996010A (en) * 1944-06-30 1961-08-15 Rudolph O Frantik Projectile
US2998778A (en) * 1945-08-02 1961-09-05 Charles E Hablutzel Sabot retainer
US3000316A (en) * 1944-07-10 1961-09-19 Henry F Dunlap Projectile
US3359905A (en) * 1965-04-01 1967-12-26 Oerlikon Buehrle Holding Ag Sabot projectile
DE3151525C1 (de) * 1981-12-24 1991-10-10 Rheinmetall Gmbh Munitionseinheit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097321B (de) * 1957-04-10 1961-01-12 Financ D Expansion Commerciale UEberschallgeschwindigkeits-Geschoss
DE1163193B (de) * 1960-03-26 1964-02-13 Aircraft Armaments Inc Treibspiegel fuer Geschosse mit hoher Geschwindigkeit
DE3507408A1 (de) * 1985-03-02 1986-09-04 Diehl GmbH & Co, 8500 Nürnberg Drallgeschoss

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983225A (en) * 1944-06-30 1961-05-09 Nelson A Walker Projectile
US2996010A (en) * 1944-06-30 1961-08-15 Rudolph O Frantik Projectile
US3000316A (en) * 1944-07-10 1961-09-19 Henry F Dunlap Projectile
US2616372A (en) * 1945-08-02 1952-11-04 Rudolph O Frantik Projectile
US2998778A (en) * 1945-08-02 1961-09-05 Charles E Hablutzel Sabot retainer
US2820412A (en) * 1948-10-20 1958-01-21 Jr Reinier Beeuwkes Projectile for firearms
US2672814A (en) * 1949-10-07 1954-03-23 Schlumberger Well Surv Corp Fluid sealing and burr elimination projectile for perforator guns
US2761348A (en) * 1952-04-30 1956-09-04 Portable Ind Inc Centering and guiding means for pins, studs, and like fastening elements
US2776621A (en) * 1954-06-28 1957-01-08 Rosenblatt Jordan Projectile
US3359905A (en) * 1965-04-01 1967-12-26 Oerlikon Buehrle Holding Ag Sabot projectile
DE3151525C1 (de) * 1981-12-24 1991-10-10 Rheinmetall Gmbh Munitionseinheit
US5148750A (en) * 1981-12-24 1992-09-22 Rheinmetall Gmbh Unitary projectile

Also Published As

Publication number Publication date
GB410326A (en) 1934-05-17
BE397466A (it)
CH171418A (fr) 1934-08-31
DE610298C (de) 1935-03-08

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