US3301186A - Banded projectiles particularly for small arms - Google Patents

Banded projectiles particularly for small arms Download PDF

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Publication number
US3301186A
US3301186A US388855A US38885564A US3301186A US 3301186 A US3301186 A US 3301186A US 388855 A US388855 A US 388855A US 38885564 A US38885564 A US 38885564A US 3301186 A US3301186 A US 3301186A
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US
United States
Prior art keywords
projectile
driving band
band
grooves
banded
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
US388855A
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English (en)
Inventor
Henry Charles
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.)
Manufacture de Machines du Haut Rhin SA MANURHIN
Original Assignee
Manufacture de Machines du Haut Rhin SA MANURHIN
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Filing date
Publication date
Application filed by Manufacture de Machines du Haut Rhin SA MANURHIN filed Critical Manufacture de Machines du Haut Rhin SA MANURHIN
Application granted granted Critical
Publication of US3301186A publication Critical patent/US3301186A/en
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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
    • F42B14/02—Driving bands; Rotating bands

Definitions

  • the driving band of a banded projectile serves to ensure sealing tightness between the bore of the barrel and the projectile and to impart to the projectile a rotary movement which ensures its stability in the trajectory.
  • the driving band should be able to conform itself to the internal profile of the barrel, be hard enough not to be worn by the rifling of the barrel and to be sufficiently well fixed to the projectile to drive it in its rotary movement.
  • driving bands are usually of copper or of Steel, materials which cause respectively copper fouling and rapid wear of barrels; if made of sintered steel or iron they are moreover apt to break up partially and to give off jets of sparks at the mouth of the barrel.
  • the driving band is generally constituted by a steel envelope plated with nickel or German silver which is mounted either directly on the body of the projectile when the latter is of lead, or else with the inter-position of a lead sleeve when the body is of tempered steel.
  • the main purpose of the lead sleeve in this case is to permit the steel envelope to deform as it engages the rifling. Consequently, without the lead sleeve, which forms a deformable mattress, the friction of the projectile would cause too rapid wear of the barre-l.
  • the connection between the subjacent lead ring and the thin external steel band is not always sufiicient to resist the inertia forces developed during the setting in rotation of the projectile in the barrel.
  • the object of the invention is to overcome these drawbacks.
  • the present invention concerns a banded projectile in which the contact between the driving band and the body of the projectile is realised without the interposition of a lead sleeve, the driving band being capable of conforming itself to the internal profile of the barrel on the one hand, while concerning moreover correct connection with the body of the projectile.
  • the driving band and the body of the projectile are directly in contact, but this contact is not continuous, so that there exists between the driving band and the said body a plurality of cavities which permit the driving band to deform under the action of the rifling of the bore during firing.
  • the body of the projectile is formed with a system of fine grooves which are inclined in the direction of rotation of the projectile, the depth of the groove about corresponding to the depth of the rifling in the bore, and the longitudinal profile of the grooved portion being selected in such a manner that the driving band, once put in position, is exactly the profile which suits best the particular conditions of use.
  • the grooves can also be inclined in the opposite direction to that of rotation.
  • This system of grooves possesses effectively the qualities required for connecting means between body and driving band since it permits the driving band to deform, taking into account that the volume of the bands is about v 3,301,186 Patented Jan. 31, 1967 "ice equal to the volume of the spaces while offering sufficient resistance to the lateral shearing.
  • the driving band which is applied on the system of grooves thus formed is constituted by a thin ring, for example of coldworked mild steel which is plated with nickel or German silver; the thickness of this is preferably between 0.5 and 1 mm.
  • the fixing of this driving band on the body of the projectile is effected, according to another feature of the invention, in forming on the body of the projectile, on each side of the grooved portion, two transverse circular channels, having a suitable profile and an external lip, then in applying the cylindrical ring onto the groove by means of a positioning ring of rubber for example, and thereafter pressing down the external lips of the channels onto the edges of the driving band in such a manner as to push down these edges to the bottom of the channels.
  • the positioning operation for the driving band could also be effected by magnetic forming.
  • FIG. 1 is a half-view of the projectile body of the first embodiment
  • FIG. 2 is a half-view of the projectile body of the sec ond embodiment
  • FIG. 3 is a side view in half-section of the embodiment of FIG. 1 with the ring in position
  • FIG. 4 is a side view half in section of the embodiment shown in FIG. 2 with the ring in position
  • FIG. 5 is a section of the projectile at right-angles to its axis showing the profile of the ring, and of the system of subjacent grooves, before and after firing (the state after firing being shown in the top right quadrant).
  • FIGS. 1 and 2 is shown one half of a side view of the body of the projectile, one of which is formed in accordance with the invention, on the one hand a system 2 of fine grooves inclined in the direction of the rotation of the projectile, and on the other hand a plane perpendicular in the axis of the projectile to channels 3 and 4 the edges of which present external lips 5 and 6, FIGS. 1 and 2 differing only in the shape of the grooves.
  • FIGS. 3 and 4 which correspond respectively to FIGS. 1 and 2, and which show each a side view with the left half in section, of the body of the projectile 1 provided with its driving band 7 of which the edges 8 and 9 are forced respectively to the bottom of the grooves 3 and 4 under the pusheddown lips 5 and 6.
  • the system of grooves 2 are shown in continuous lines for greater clarity, whereas they would normally be shown in dotted lines.
  • the driving band When seen in section at right-angles to the axis of the projectile, the driving band has the profile indicated in FIG. 5, the driving band 7 resting over the grooves 2 of the body of the projectile; the upper right-hand quadrant in this same figure shows the partial crush of this groove system following the deformation of the driving band after firing under the effect of the rifling of the barrel.
  • the method of providing the driving band would be the same since a softening treatment of the whole portion behind the shell is generally necessary and enables a hardness to be obtained at the points where it is necessary such that the positioning and use of the driving band take place without difficulty.
  • the plurality of fine grooves 2 are generally in skew relation, otherwise expressed as being parallel to a direction inclined, to the axis of the body 1 and therefore helical in form, that the depth of the grooves 2 corresponds generally to the depth of rifiing grooves in the bore (not shown) for said projectile, as pointed out above as one of the preferred forms of the invention, and that the walls of said grooves may be superficially annealed.
  • a projectile to be fired by firearms having a barrel with inside rifiing grooves said projectile comprising a body having an axis of revolution, a generally tubular mild steel driving band having inner and outer cylindrical surfaces encircling a portion of said body, said 'portion of said body provided with a grooved structure defining top ridges and hollow bottoms, said top ridges being in immediate and continuous contact with said inner cylindrical surface of said driving band and defining air spaces between said inner cylindrical surface of said band and said of said grooved structure is substantially equal to the depth of said rifiing grooves.
  • a projectile according to claim 1 wherein said top ridges of said grooved structure are inclined in the direction of rotation of said projectile.
  • a projectile according to claim 1 in which said top ridges and hollow bottoms of said grooved structure are parallel to a direction inclined to said axis of said projectile.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Chemically Coating (AREA)
  • Forging (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Toys (AREA)
US388855A 1963-08-12 1964-08-11 Banded projectiles particularly for small arms Expired - Lifetime US3301186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR944448A FR1385392A (fr) 1963-08-12 1963-08-12 Projectiles ceinturés perfectionnés notamment pour armes automatiques de petit calibre

Publications (1)

Publication Number Publication Date
US3301186A true US3301186A (en) 1967-01-31

Family

ID=8810382

Family Applications (1)

Application Number Title Priority Date Filing Date
US388855A Expired - Lifetime US3301186A (en) 1963-08-12 1964-08-11 Banded projectiles particularly for small arms

Country Status (6)

Country Link
US (1) US3301186A (de)
BE (1) BE649916A (de)
CH (1) CH417400A (de)
DE (2) DE1678497B1 (de)
FR (1) FR1385392A (de)
GB (1) GB1065779A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847082A (en) * 1969-08-29 1974-11-12 Pacific Technica Corp Spin stabilized, discarding sabot projectile
US4754708A (en) * 1986-11-24 1988-07-05 Ford Aerospace & Communications Corp. Projectile driving band retention system
US4884508A (en) * 1987-10-08 1989-12-05 Rheinmetall Gmbh Spin stabilized carrier projectile equipped with a driving band
US5133262A (en) * 1987-07-18 1992-07-28 Rheinmetall Gmbh Penetrator
US20190186880A1 (en) * 2016-12-07 2019-06-20 Russell LeBlanc Frangible Projectile and Method of Manufacture
WO2020261136A3 (en) * 2019-06-26 2021-06-03 Weidemann Hermann Arthur A bullet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540239A1 (fr) * 1983-02-02 1984-08-03 Antoine Robert Projectile a noyau et revetement ductile et cartouche comprenant un tel projectile
DE102007051406B3 (de) * 2007-10-25 2009-04-30 Michael Reichenberg Geschoss für so genannte Handfeuerwaffen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US815992A (en) * 1904-08-01 1906-03-27 Firth Sterling Steel Co Projectile and its band.
US1361158A (en) * 1919-03-26 1920-12-07 Jezler Hubert Guide-ring for projectiles
US1526701A (en) * 1919-12-15 1925-02-17 Frank A Fahrenwald Projectile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310646C (de) *
US681448A (en) * 1899-03-16 1901-08-27 Gathmann Torpedo Gun Company Projectile.
DE324770C (de) * 1917-04-10 1920-09-03 Hubert Jezler Dr Ing Eiserner Dichtungs- und Fuehrungsring an Artilleriegeschossen
DE709576C (de) * 1936-11-26 1941-08-21 Rheinmetall Borsig Akt Ges Infanteriegeschoss aus Eisen oder Stahl
GB573904A (en) * 1943-02-03 1945-12-12 Claude William Denny Improvements in and relating to driving bands for projectiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US815992A (en) * 1904-08-01 1906-03-27 Firth Sterling Steel Co Projectile and its band.
US1361158A (en) * 1919-03-26 1920-12-07 Jezler Hubert Guide-ring for projectiles
US1526701A (en) * 1919-12-15 1925-02-17 Frank A Fahrenwald Projectile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847082A (en) * 1969-08-29 1974-11-12 Pacific Technica Corp Spin stabilized, discarding sabot projectile
US4754708A (en) * 1986-11-24 1988-07-05 Ford Aerospace & Communications Corp. Projectile driving band retention system
US5133262A (en) * 1987-07-18 1992-07-28 Rheinmetall Gmbh Penetrator
US4884508A (en) * 1987-10-08 1989-12-05 Rheinmetall Gmbh Spin stabilized carrier projectile equipped with a driving band
US20190186880A1 (en) * 2016-12-07 2019-06-20 Russell LeBlanc Frangible Projectile and Method of Manufacture
US10598472B2 (en) * 2016-12-07 2020-03-24 Russell LeBlanc Frangible projectile and method of manufacture
WO2020261136A3 (en) * 2019-06-26 2021-06-03 Weidemann Hermann Arthur A bullet

Also Published As

Publication number Publication date
BE649916A (de) 1964-12-30
CH417400A (fr) 1966-07-15
DE1900922U (de) 1964-09-17
FR1385392A (fr) 1965-01-15
DE1678497B1 (de) 1970-05-21
GB1065779A (en) 1967-04-19

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