GB1409331A - Rifling - Google Patents
RiflingInfo
- Publication number
- GB1409331A GB1409331A GB1557273A GB1557273A GB1409331A GB 1409331 A GB1409331 A GB 1409331A GB 1557273 A GB1557273 A GB 1557273A GB 1557273 A GB1557273 A GB 1557273A GB 1409331 A GB1409331 A GB 1409331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- barrel
- chords
- mandrel
- arc
- rifling
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/24—Barrels or gun tubes with fins or ribs, e.g. for cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/16—Barrels or gun tubes characterised by the shape of the bore
- F41A21/18—Grooves-Rifling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Building Environments (AREA)
- Fireproofing Substances (AREA)
- Laminated Bodies (AREA)
- Metal Extraction Processes (AREA)
- Forging (AREA)
Abstract
1409331 Riflings DEFENCE SECRETARY OF STATE FOR 28 March 1974 [30 March 1973] 15572/73 Heading F3C [Also in Division B3] A barrel 1 for a gun has a helical rifling formation on the internal surface thereof, the profile 2 of the rifling comprising arcs 3, 4, 5 and 6 of uniform and equal radii which have a common centre 8, and an equal number of chords 9, 10, 11 and 12, each arc being spaced from each adjacent arc by one of the chords. The arcs subtend equal angles at the centre of the barrel and the chords are of equal length. The perpendicular distance from the centre 8 to each arc is not less than 0À900 and not greater than 0À995 the length of the radius of each arc. Preferably there are an even number of arcs and chords. The rifling may be formed by a known broaching operation or by a cold swaging process using a mandrel. The latter may be made of hardened alloy-steel or tungsten-carbide and is positioned inside a smooth-bored barrel blank. Hammers act in unison to close the barrel blank inwards on to the mandrel, the barrel and the mandrel being slowly rotated relative to the hammers and the barrel being fed longitudinally over the mandrel during the process.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1557273A GB1409331A (en) | 1973-03-30 | 1973-03-30 | Rifling |
| ES424736A ES424736A1 (en) | 1973-03-30 | 1974-03-28 | Rifling |
| DE19742414931 DE2414931A1 (en) | 1973-03-30 | 1974-03-28 | DRAWN TUBE, IN PARTICULAR FOR HANDGUNS, AND METHOD OF MANUFACTURING THEREOF |
| IT4989174A IT1003962B (en) | 1973-03-30 | 1974-03-29 | PERFECTION IN THE LINES FOR FIREARM BARRELS AND RELATED FORMATION PROCEDURE |
| BE142693A BE813106A (en) | 1973-03-30 | 1974-03-29 | SCRATCH IMPROVEMENTS |
| FR7411373A FR2223654A1 (en) | 1973-03-30 | 1974-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1557273A GB1409331A (en) | 1973-03-30 | 1973-03-30 | Rifling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1409331A true GB1409331A (en) | 1975-10-08 |
Family
ID=10061525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1557273A Expired GB1409331A (en) | 1973-03-30 | 1973-03-30 | Rifling |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE813106A (en) |
| DE (1) | DE2414931A1 (en) |
| ES (1) | ES424736A1 (en) |
| FR (1) | FR2223654A1 (en) |
| GB (1) | GB1409331A (en) |
| IT (1) | IT1003962B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9234716B2 (en) | 2011-11-15 | 2016-01-12 | F. J. Feddersen, Inc. | Gun barrel rifling |
| RU2683212C1 (en) * | 2018-01-15 | 2019-03-26 | Акционерное общество "Концерн "Калашников" | Firearm barrel (options) |
| US12203716B2 (en) | 2023-01-10 | 2025-01-21 | WHG Properties, LLC | Rifling profile for firearms |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016111571A1 (en) * | 2016-06-23 | 2017-12-28 | Rheinmetall Waffe Munition Gmbh | Gun barrel with inner profile |
-
1973
- 1973-03-30 GB GB1557273A patent/GB1409331A/en not_active Expired
-
1974
- 1974-03-28 DE DE19742414931 patent/DE2414931A1/en active Pending
- 1974-03-28 ES ES424736A patent/ES424736A1/en not_active Expired
- 1974-03-29 FR FR7411373A patent/FR2223654A1/fr not_active Withdrawn
- 1974-03-29 BE BE142693A patent/BE813106A/en unknown
- 1974-03-29 IT IT4989174A patent/IT1003962B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9234716B2 (en) | 2011-11-15 | 2016-01-12 | F. J. Feddersen, Inc. | Gun barrel rifling |
| RU2683212C1 (en) * | 2018-01-15 | 2019-03-26 | Акционерное общество "Концерн "Калашников" | Firearm barrel (options) |
| US12203716B2 (en) | 2023-01-10 | 2025-01-21 | WHG Properties, LLC | Rifling profile for firearms |
Also Published As
| Publication number | Publication date |
|---|---|
| ES424736A1 (en) | 1976-07-01 |
| FR2223654A1 (en) | 1974-10-25 |
| BE813106A (en) | 1974-07-15 |
| DE2414931A1 (en) | 1974-10-17 |
| IT1003962B (en) | 1976-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |