US1823022A - Bullet for practice cartridges - Google Patents

Bullet for practice cartridges Download PDF

Info

Publication number
US1823022A
US1823022A US473368A US47336830A US1823022A US 1823022 A US1823022 A US 1823022A US 473368 A US473368 A US 473368A US 47336830 A US47336830 A US 47336830A US 1823022 A US1823022 A US 1823022A
Authority
US
United States
Prior art keywords
bullet
lead
practice cartridges
space
core
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
US473368A
Inventor
Blechta Frantisek
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
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1823022A publication Critical patent/US1823022A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • F42B12/78—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing of jackets for smallarm bullets ; Jacketed bullets or projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/025—Cartridges, i.e. cases with charge and missile characterised by the dimension of the case or the missile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges

Definitions

  • This invention relates to a hollow bullet for practice cartridges which differs from the bullets hitherto proposed for this purpose by better trajectory stability and therefore also greater precision, and in which at the same time the melting out of lead from the inside of the bullet into the barrel bore is prevented.
  • the bullet according to the invention is provided on its outer surface with an envelope 2 of copper or other hard metal in order to prevent the rubbing oif of lead in the bore of the barrel.
  • the bullet is hollow and has a transverse partition 3 of lead approximately in its centre of gravity subdividing the inner space of the builet into a closed front space 4 and an open rear space 5, with which latter the bullet is fitted directly on the cartridge case provided with a percussion cap (not shown).
  • the transverse partition 3 forms in the centre of gravity of the bullet the mass which guarantees the trajectory stability, whereas the hollow spaces land 5 reduce the weight of the bullet so that its perforating effect is reduced to a minimum.
  • the main feature of the invention consists in that the hollow space 5, by means of which the bullet is placed directly onto the cartridge case provided with percussion cap, is provided with a lining 6 made of copper or other suitable hard metal, with the object of preventing a deformation or breaking away of the transverse lead partition 3 by the force of the propelling gases of the percussion cap.
  • a lining 6 made of copper or other suitable hard metal, with the object of preventing a deformation or breaking away of the transverse lead partition 3 by the force of the propelling gases of the percussion cap.
  • a bullet for practice cartridges comprising in combination a hol ow lead core, a protecting envelope of metal such as copper on said core, a transverse partition in the centre of gravity of said hollow lead core adapted to ensure the trajectory stability of said bullet and to subdivide said core into a closed front space and an open rear space said open space placed directly on the cartridge casing, and alining of hard metal such as copper in said open space adapted to protect said transverse lead partition against deformation and breaking off during shootin g and to at the same time prevent the lead from melting out of said hollow space.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

Sept. 15, 1931 F. BLECHTA 3,
BULLET FOR PRACTICE CARTRIDGES Filed Aug. 6, 1930 Jzwezaibr:
Patented Sept. 15, 1931 FRANTISEK BLECHTA, OF PRAGUE, CZECHOSLOVAKIA BULLET FOR PRACTICE CARTRIDGES Application filed August 6, 1930, Serial No. 473,368, and in Switzerland, Belgium, France, Italy,
Spain and Great Britain May 10, 1930.
This invention relates to a hollow bullet for practice cartridges which differs from the bullets hitherto proposed for this purpose by better trajectory stability and therefore also greater precision, and in which at the same time the melting out of lead from the inside of the bullet into the barrel bore is prevented.
An embodiment of the invention is illustrated by way of example in the accompanying drawing partly in side elevation and partly in vertical axial section.
The bullet according to the invention, the lead core 1 of which has the usual pointed shape, is provided on its outer surface with an envelope 2 of copper or other hard metal in order to prevent the rubbing oif of lead in the bore of the barrel. The bullet is hollow and has a transverse partition 3 of lead approximately in its centre of gravity subdividing the inner space of the builet into a closed front space 4 and an open rear space 5, with which latter the bullet is fitted directly on the cartridge case provided with a percussion cap (not shown). The transverse partition 3 forms in the centre of gravity of the bullet the mass which guarantees the trajectory stability, whereas the hollow spaces land 5 reduce the weight of the bullet so that its perforating effect is reduced to a minimum.
The main feature of the invention consists in that the hollow space 5, by means of which the bullet is placed directly onto the cartridge case provided with percussion cap, is provided with a lining 6 made of copper or other suitable hard metal, with the object of preventing a deformation or breaking away of the transverse lead partition 3 by the force of the propelling gases of the percussion cap. By this means displacement of the centre of gravity, otherwise unavoidable, is obviated, this being of great importance for the trajectory stability of the bullet and therefore also for its precision or accuracy of hitting. Moreover this lining prevents the melting out of lead from the bullet core through the hot propelling gases of the percussion cap produced when firing. By this means not only a better trajectory stability of the bullet is obtained, but the objectionable fouling of the barrel bore with lead is prevented which also detrimentally affects the shooting precision, so that the difiicult removing of the lead residues from the barrel bore is done away with.
7 illustrates flutes by means of which the envelope is usually secured on the lead core 1.
I claim A bullet for practice cartridges, comprising in combination a hol ow lead core, a protecting envelope of metal such as copper on said core, a transverse partition in the centre of gravity of said hollow lead core adapted to ensure the trajectory stability of said bullet and to subdivide said core into a closed front space and an open rear space said open space placed directly on the cartridge casing, and alining of hard metal such as copper in said open space adapted to protect said transverse lead partition against deformation and breaking off during shootin g and to at the same time prevent the lead from melting out of said hollow space.
In testimony whereof I afiiX my signature.
FRANTISEK BLECHTA.
US473368A 1930-06-16 1930-08-06 Bullet for practice cartridges Expired - Lifetime US1823022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18352/30A GB352685A (en) 1930-06-16 1930-06-16 Bullets for practice cartridges

Publications (1)

Publication Number Publication Date
US1823022A true US1823022A (en) 1931-09-15

Family

ID=10110993

Family Applications (1)

Application Number Title Priority Date Filing Date
US473368A Expired - Lifetime US1823022A (en) 1930-06-16 1930-08-06 Bullet for practice cartridges

Country Status (4)

Country Link
US (1) US1823022A (en)
BE (1) BE370658A (en)
FR (1) FR697493A (en)
GB (1) GB352685A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050000A (en) * 1958-12-23 1962-08-21 David J Katsanis Hypervelocity fluid flow temperature limiter
US20140326158A1 (en) * 2011-12-28 2014-11-06 Randy R. Fritz Hollow bullet with internal structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050000A (en) * 1958-12-23 1962-08-21 David J Katsanis Hypervelocity fluid flow temperature limiter
US20140326158A1 (en) * 2011-12-28 2014-11-06 Randy R. Fritz Hollow bullet with internal structure
US9372058B2 (en) * 2011-12-28 2016-06-21 Randy R. Fritz Hollow bullet with internal structure

Also Published As

Publication number Publication date
BE370658A (en) 1930-06-30
GB352685A (en) 1931-07-16
FR697493A (en) 1931-01-19

Similar Documents

Publication Publication Date Title
US2465962A (en) Protection of bore surfaces of guns
US3096715A (en) Armor-piercing projectiles
ES2309511T3 (en) 4.6 MM AMMUNITION FOR SMALL WEAPONS.
US2045964A (en) Casing projectile
US3507221A (en) Armor piercing,sabot shells
US692819A (en) Means for effecting noiseless discharge of guns.
US7493862B2 (en) Jacket bullets
US4075946A (en) Armor piercing projectile
BR112015028635A2 (en) flangeless cartridge
US2052546A (en) Propulsive cartridge for projectiles
US1823022A (en) Bullet for practice cartridges
US2394249A (en) Cartridge
US1760731A (en) Interchangeable barrel for guns
US1355421A (en) Rifle-barrel
US1311021A (en) Fixed ammunition for non-recoil guns.
US2234165A (en) Projectile
US2472111A (en) Recoilless firearm and ammunition therefor
US3058423A (en) Spin, tangential device for projectiles
CA2576496A1 (en) Reloadable subsonic rifle cartridge
NO120975B (en)
US1191618A (en) Subcaliber attachment for firearms.
US2091635A (en) Projectile
US1217162A (en) Subcaliber-barrel.
US2055765A (en) Projectile
DE2444181A1 (en) Small calibre bullet for shotguns - is held in cartridge case with envelope discarded on firing