FR2292530A1 - Mfr. of double barrels for firearms - entails welding together oversize tubes treating and drawing to size - Google Patents
Mfr. of double barrels for firearms - entails welding together oversize tubes treating and drawing to sizeInfo
- Publication number
- FR2292530A1 FR2292530A1 FR7438832A FR7438832A FR2292530A1 FR 2292530 A1 FR2292530 A1 FR 2292530A1 FR 7438832 A FR7438832 A FR 7438832A FR 7438832 A FR7438832 A FR 7438832A FR 2292530 A1 FR2292530 A1 FR 2292530A1
- Authority
- FR
- France
- Prior art keywords
- tubes
- firearms
- oversize
- mfr
- treating
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- 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
- F41A21/06—Plural barrels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Earth Drilling (AREA)
Abstract
The process for the fabrication of double barrels for firearms, entails the welding together of oversize tubes followed by treatment and drawing to the required size. The two tubes initially joined have bores and outer diameters which are resp. lesser and greater than the finished product and material similar to that constituting the the tubes is pref. used in the welding operation. Prior to welding, the tubes are cut to equal lengths, and prior to the simultaneous drawing operating tangs are formed on each tube followed by the subjection of the assembly to tempering and suitable surface treatment. After drawing the product is cut to a desired length.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7438832A FR2292530A1 (en) | 1974-11-27 | 1974-11-27 | Mfr. of double barrels for firearms - entails welding together oversize tubes treating and drawing to size |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7438832A FR2292530A1 (en) | 1974-11-27 | 1974-11-27 | Mfr. of double barrels for firearms - entails welding together oversize tubes treating and drawing to size |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2292530A1 true FR2292530A1 (en) | 1976-06-25 |
FR2292530B1 FR2292530B1 (en) | 1977-03-25 |
Family
ID=9145287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7438832A Granted FR2292530A1 (en) | 1974-11-27 | 1974-11-27 | Mfr. of double barrels for firearms - entails welding together oversize tubes treating and drawing to size |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2292530A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022553432A (en) * | 2019-12-14 | 2022-12-22 | エンジニアリング テクノロジーズ アンド マニファクチュアリング リミテッド | Method for manufacturing gun barrel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041719A (en) * | 1959-05-05 | 1962-07-03 | Engelhard Ind Inc | Method of making a composite tube |
-
1974
- 1974-11-27 FR FR7438832A patent/FR2292530A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041719A (en) * | 1959-05-05 | 1962-07-03 | Engelhard Ind Inc | Method of making a composite tube |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022553432A (en) * | 2019-12-14 | 2022-12-22 | エンジニアリング テクノロジーズ アンド マニファクチュアリング リミテッド | Method for manufacturing gun barrel |
US11808539B2 (en) | 2019-12-14 | 2023-11-07 | Engineering Technologies & Manufacturing Ltd. | Method for manufacturing gun barrels |
Also Published As
Publication number | Publication date |
---|---|
FR2292530B1 (en) | 1977-03-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
TP | Transmission of property |