US3021763A - Mechanism for converting a rifle from semi-automatic to automatic firing - Google Patents
Mechanism for converting a rifle from semi-automatic to automatic firing Download PDFInfo
- Publication number
- US3021763A US3021763A US20394A US2039460A US3021763A US 3021763 A US3021763 A US 3021763A US 20394 A US20394 A US 20394A US 2039460 A US2039460 A US 2039460A US 3021763 A US3021763 A US 3021763A
- Authority
- US
- United States
- Prior art keywords
- automatic
- rifle
- lever
- firing
- semi
- 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
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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
- F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
- F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
- F41A19/42—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer
- F41A19/43—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer in bolt-action guns
- F41A19/46—Arrangements for the selection of automatic or semi-automatic fire
Definitions
- BERETTA 3,021,763 MECHANISM FOR CONVERTING A RIFLE FROM SEMI-AUTOMATIC TO AUTOMATIC FIRING Feb. 20, 1962 6 Sheets-Sheet 1 Filed April 6, 1960 @vlnnr: 42- t Feb. 20, 1962 P. c. BERETTA 3,021,763
- FIG. 2a MECHANISM FOR CONVERTING A RIFLE FROM SEMI-AUTOMATIC T0 AUTOMATIC FIRING Filed April 6, 1960 v 6 Sheets-Sheet?
- FIG. 2a MECHANISM FOR CONVERTING A RIFLE FROM SEMI-AUTOMATIC T0 AUTOMATIC FIRING Filed April 6, 1960 v 6 Sheets-Sheet?
- the disconnection of the hammer and, consequently, the firing of the cartridge are performed automatically and are repeated in succession until themagazine is exhausted or else until the marksman has released the pressure exerted by him on the trigger.
- FIG. 1 is an elevational view of one side of a gun with part thereof shown in section, and with the bolt in its closed position;
- FIG. 2 is a similar side view of the rifle as seen from the opposite side together with a cross-section through the pivot of the selector lever;
- FIG. 2a is a partial sectional view taken along the line 2a-2a of FIG. 2 and looking in the direction of the arrows;
- FIGS. 3, 4 and 5 illustrate the successive stages of the automatic operation of the rifle
- FIG. 6 illustrates a type of control lever employed in this gun
- FIG. 7 illustrates a selectorlever of the type employed in this gun
- FIG. 7a is a view looking at the left side of the lever in FIG. 7;
- FIG. 8 is a view of the device which interconnects the selector lever and the automatic control lever
- FIG. 8a is a view looking at the left side of the device shown in FIG. 8;
- FIG. 9 illustrates in contradistinction the semi-automatic operation of the rifle shot by shot.
- the reference letters designate the original parts of regular Garand rifles and the arrows indicate the direction in which parts move (unless ortherwise indicated), while the reference numbers designate the different components of the novel arrangement incorporated with the rifle, according to the invention. It should be understood furthermore that the operations ensuring the successive hammer setting and releasing steps, the introduction of the cartridges'and the extraction of the cartridge case after firing, etc. are executed in conformity with the original design of the regular rifle with a reciprocation of the bolt and of the operating rod simultaneously with the action exerted by the marksman on the trigger.
- the following reference letters designate the following parts:
- a designates the bolt progressing and receding alternatingly under the action of the recovering springs acting against the thrust exerted by the shot.
- d designates a plunger on the spring acting on the hammer and enclosing said spring.
- e designates the trigger with the projection e (primary sear) there for engagement with the hammer.
- f designates the secondary sear provided with a projection f, the sear being pivotally secured to the body of the trigger.
- g designates the operating rod on which the recovering spring acts.
- FIG. 1 is a side view of the rifle as seen from the right hand side, the bolt being in its closed or forward position.
- 1 designates the automatic control lever pivotally secured to the side of receiver b at point 3, the front end of said lever forming a shaped projection 2.
- the lever is urged by a spring 4- (mounted in a recess 4 in lever 1 and guided by a pin 4" on receiver 12 tobear against the latter) so as to constrain the projection 2 to engage the lower side of the operating rod 'g which is subjected to the action of the conventional recovering spring which is not illustrated for sake of clarity.
- lever 1 pivoting roundthe point 3 may assume dilferent angular positions in a vertical plane under the action of the spring 4 according to the position assumed by the rod g which reciprocates simultaneously with the bolt.
- FIG. 2 is a view of the rifie from the left hand side and in addition to the parts illustrated in FIG. 1, it shows a selector lever 7 which is adapted to assume as required by the marksman one of two angular positions designated by In and Ila respectively corresponding to semi-automatic shot by shot operation and automatic operation.
- the lever 7 has a slot 7' which engages with a rectangular portion 8' at one end of pivot 8 which passes through the forward end of the receiver b and carries at its opposite end a small plate or guidebracket 9 folded into channel of the lever 1 controlling automatic firing.
- the lever 7 is subjected to the action of the over-center type spring 7' guided in recess 7 in the lever and secured to the receiver lathe spring holding 7 in either of its positions Ia or Ila. It will be remarked that upon shifting by hand the lever 7 from the position Ia into the position Ila there is obtained a rotary movement of the pivot 8 and consequently of the small plate 9.
- FIG. 5 illustrates the thirdjand final stageLo-fa tem ati'c I i operation.
- the .bolt a and the operating rodj g have I I 3 reached their final cios'ing positionx As a resultof the l f I 1 anew/es 'D'iQfiDHiCf leverl during automatic? operation. so end. 1
- ncrtheflever 1 are in contact with each other final stroke executed by the rod g, the end 2 of the lever is now in contact with the underside of the rod g so that forward end of the lever 1 has turned by a further angle downwardly while its rear end has raised and urged again rearwardly the sear f, which latter has therefore disengaged the hammer.
- the hammer in its turn hits the striker and produces the firing of the cartridge simultaneously with the closing of the rifle by the gas check.
- FIG. 9 illustrates the operation of the rifle firing shot by shot in a semi-automatic manner.
- the marksman sets vfor such an operation the selector lever 7 in its position la.
- the pivot 8 turns consequently together with the small plate 9 rigid therewith and the upper nose 11 projecting with reference to said plate engages the upper side of the lever in the front section of the latter.
- bracket is fixed toone end of a shaft rota't ably mounted in said receiver, said shaft having a handle fixed to the opposite end thereof, whereby upon rotation of said handle toward the rear of said rifle from its automatic to semi-automatic position, said bracket is pivoted and moves its lower lug from beneath the forward end of said lever while urging said upper lug against the upper side of said lever to thereby pivot the latter to remove its projection from the path of said operating rod and its cammed rear end from engagement with said soar and rendering the rifle semiautomatic in operation.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Portable Nailing Machines And Staplers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3021763X | 1959-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3021763A true US3021763A (en) | 1962-02-20 |
Family
ID=11436574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US20394A Expired - Lifetime US3021763A (en) | 1959-05-23 | 1960-04-06 | Mechanism for converting a rifle from semi-automatic to automatic firing |
Country Status (3)
Country | Link |
---|---|
US (1) | US3021763A (sr) |
DE (1) | DE1148470B (sr) |
NL (2) | NL112208C (sr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4514923A (en) * | 1982-09-01 | 1985-05-07 | Patrick Teel | Trigger actuator |
US5705763A (en) * | 1996-07-18 | 1998-01-06 | Leon; Jorge A. | Fire selector system for selecting between automatic and semi-automatic operation of a gun |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT388611B (de) * | 1987-09-22 | 1989-08-10 | Steyr Daimler Puch Ag | Abzugsvorrichtung fuer automatische handfeuerwaffen |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2452617A (en) * | 1945-07-23 | 1948-11-02 | Joseph W Wechsler | Gas operated shoulder weapon |
US2464418A (en) * | 1948-01-02 | 1949-03-15 | Olin Ind Inc | Fire control mechanism for automatic and semiautomatic firearms |
US2465487A (en) * | 1944-10-28 | 1949-03-29 | Gen Motors Corp | Semiautomatic firearm converted to full automatic |
US2568198A (en) * | 1947-08-27 | 1951-09-18 | Remington Arms Co Inc | Mechanism to convert a firearm from semiautomatic to full automatic action |
US2572872A (en) * | 1948-10-08 | 1951-10-30 | Stanley J Ketterer | Attachment for converting semiautomatic firearms to full automatic |
US2715355A (en) * | 1945-07-23 | 1955-08-16 | John C Garand | Fire control mechanism |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE361662A (sr) * | 1928-06-20 | |||
US2590854A (en) * | 1946-07-03 | 1952-04-01 | Alonzo F Gaidos | Automatic hammer safety for automatic guns |
-
0
- NL NL250466D patent/NL250466A/xx unknown
- NL NL112208D patent/NL112208C/xx active
-
1960
- 1960-04-06 US US20394A patent/US3021763A/en not_active Expired - Lifetime
- 1960-04-08 DE DEF30964A patent/DE1148470B/de active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2465487A (en) * | 1944-10-28 | 1949-03-29 | Gen Motors Corp | Semiautomatic firearm converted to full automatic |
US2452617A (en) * | 1945-07-23 | 1948-11-02 | Joseph W Wechsler | Gas operated shoulder weapon |
US2715355A (en) * | 1945-07-23 | 1955-08-16 | John C Garand | Fire control mechanism |
US2568198A (en) * | 1947-08-27 | 1951-09-18 | Remington Arms Co Inc | Mechanism to convert a firearm from semiautomatic to full automatic action |
US2464418A (en) * | 1948-01-02 | 1949-03-15 | Olin Ind Inc | Fire control mechanism for automatic and semiautomatic firearms |
US2572872A (en) * | 1948-10-08 | 1951-10-30 | Stanley J Ketterer | Attachment for converting semiautomatic firearms to full automatic |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4514923A (en) * | 1982-09-01 | 1985-05-07 | Patrick Teel | Trigger actuator |
US5705763A (en) * | 1996-07-18 | 1998-01-06 | Leon; Jorge A. | Fire selector system for selecting between automatic and semi-automatic operation of a gun |
Also Published As
Publication number | Publication date |
---|---|
NL112208C (sr) | |
DE1148470B (de) | 1963-05-09 |
NL250466A (sr) |
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