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US1906800A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US1906800A
US1906800A US544843A US54484331A US1906800A US 1906800 A US1906800 A US 1906800A US 544843 A US544843 A US 544843A US 54484331 A US54484331 A US 54484331A US 1906800 A US1906800 A US 1906800A
Authority
US
United States
Prior art keywords
impelling
lever
barrel
breech
braking
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
US544843A
Other languages
English (en)
Inventor
Marek Anton
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.)
FIRM CESKOSLOVENSKA ZBROJOVKA
FIRM CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST V BRNE
Original Assignee
FIRM CESKOSLOVENSKA ZBROJOVKA
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 FIRM CESKOSLOVENSKA ZBROJOVKA filed Critical FIRM CESKOSLOVENSKA ZBROJOVKA
Application granted granted Critical
Publication of US1906800A publication Critical patent/US1906800A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated
    • F41A5/08—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated having an accelerator lever acting on the breech-block or bolt during the opening movement

Definitions

  • This invention relates to automatic firearms with sliding barrel of the type in which accelerated backward movement is imparted to the breechmechanism by means 35 of an impelling device after the disengage-.
  • the present invention has for its object to obviate entirely the occurrence of shocks and joltsyand the further disadvantages in curred thereby in firearms with mechanical- '25 ly accelerated movement of the breech mechanism, this result being achieved, in accordance with the invention, by providing the impelling devicewith controlling and actuating means adapted to impart to f the breech mechanism a backward movement in relation to the barrel, the velocity of which movement is increased from nought.
  • v Fig. 1 shows the middle portion of a rifle with the parts of the mechanism in the position of rest, in longitudinal section.
  • Figs. 2 and 3 show the impelling'lever of the impelling device, in front elevation (Fig. 3) and in side elevation (Fig. 2) as seen from left to right of Fig. 3.
  • Fig. 4 shows the bearing seating for the impelling lever, in longitudinal section.
  • Fig. 5 shows a section taken on the line VV-of Fig. 41.
  • Figs. 6v and 7 show the impelling device, in longitudinal section, in two different positions.
  • Fig. 8 shows graphically the movement set up by the impelling device.
  • Fig.1 denotes the sliding barrel; the rear guide for the barrel is denoted by 3..
  • the barrel 1 is attached with its rear end to a casing 6 between the lateral walls 10, 41 of which the breech mechanism w is situated.
  • the breech mechanism 00 consists essentially. of a breech carrier 10 slid ingly mounted in guides in the casing 6, and
  • a breech 12 which is adapted to rock-to and from the breech carrier, and which is fitted with the striking pin 13 and with the cartridge-extractor.
  • the breech 12- is provided with a locking projection or catch 17 which cooperates with a locking surface 18 connected to and adapted to move with'the barrel 1.
  • the locking surface 18 is provided on the casing 6.
  • the refer- Y ence characters 19 and'20 denote controlling means provided on the breech carrier 10 and on the breech 12, which means, on cooperating, effect the rocking of the breech towards the breech carrier, andthereby the unlocking or disengagement of the parts 17 and 18.
  • the reference characters 22 and 23 denote controlling means provided on the breech carrier 10 andon the breech 12,'which means,
  • the firearm is provided with an impelling device 3 which is, adaptedto impart an accelerated backward movement to the breech mechanism a: after the disengagement of the latter from-the barrel.
  • the impelling device is provided with controlling means 30 and 31 he latter being provided on the breech carrier 10; these controlling surfaces are so shaped and cooperate in such a manner that their resultant operating curve A: (see Fig. 8) starts at a point at which there is no relativ e movement between the breech mechanism and he barrel.
  • the resulting curve of operation is denoted by in the graphic representation given in Fi 8.
  • the y-axis relates to the movement or the barrel, and the w-axis to the accelerated movement oi. the breech mechanism in excess of that of the barrel.
  • the resulting curve of operation A starts at the point 0, that is to say at a point at which the acceleration is also nought.
  • the resulting curve of operation is diverges gradually and increasingly away from the g -axis starting from the point 0, thus implying that the acceleration starts at nought, and gradually and constantly increases.
  • the impelling member 33 consists in the constructional example shown in the drawings, of a two-armed lever the axis of rotation of which is denoted by
  • the controlling or actuating surface 30 provided on the impelling lever 33 begins at the center of rotation 35 of the impelling lever hilOIGOVGT
  • the controlling surface 31 provided on the breech mechanism touches the controlling surface 30 of the impelling lever in the axis oi rotation 35 of the latter, both in the position of rest and until the cointerrorismutelnent of the accelerated backward movement (see 6).
  • the impelling lever 33 is constructed with two arms. ()11 the one of these arms the controlling surface 30 is provided.
  • the second arm 36 of this lever is adapted to cooperate with a fixed surface 37 in the performance ot' its controlling or actuating function.
  • the impelling device 7 is disposed beneath the barrel and between the downwardly projecting side walls 46, 411 of the casing 6.
  • the bearing seatings for the im 'ielling lever 33 are provided in these side walls 10, 41.
  • the bearing parts provided on the impelling lever 33 and on the side walls 410, 41 are provided with recesses or cnt-ont portions of such shape that the impelling lever 33 can be inserted and removed from between the rigid side walls 40 and 11.
  • the impelling lever is provided at both sides with segment-shaped annular projections 43 havmg their center at
  • the bearing parts on the side walls 40, ll consist of segmentshaped annular grooves 44 the center of which likewise coincides with the point lVhen the impelling lever 33 is inserted in position, the annular projections 13 slide in the grooves 1 1, so that the iinpelling lever 33 rocks about the imaginary pivot-point
  • the inipelling lever can also be mounted in the side walls 40, 4.1 by means of pins and pin-holes. In this case, however, the entire structure involved must be made wider, in order to ensure a good connection of the bearing parts (e. g. pins) with the inipelling lever.
  • the iinpelling device 3 is in the present example combined with a braking device .2 which serves for the braking and returning of the barrel into the position of rest.
  • This braking device 2 consists of an arrangement of parts 2 for braking and returning the barrel, and oi an arrangement of parts .2" for damping the reflex movements of the sliding barrel set up by the restoring force and extending beyond the position of rest.
  • the braking device is linked up with the impelling lever
  • the impelling lever 33 is provided with a slot 50 traversed by a transverse pin 51 which is engaged by the hook-shaped end 53 of a rod 53 the other end 53 of which isarticnlated by means of a joint 55 to an auxiliary piston 56.
  • the braking spring 58 bears with its ends against two pistons 60, 61 arranged within a stationary cylinder 59.
  • the piston 61 is constructed as a. braking piston, and is fitted with a slotted spring braking ring 62 which is under compression in the cylinder, and thus presses against the inner surface of this cylinder 59 for the purpose of damping the reflex movements.
  • the pistons 60, 61 are arranged between fixed stops 63, 6 1 on the cylinder, and
  • stops 66, 67 of which the stop 66 cooperates with the auxiliary piston 56, and the stop 67 with the part 42 of the casing 6.
  • the point of attachment 51 of the braking device .2 to the impelling lever is so located, in the constructional example shown in the drawings, that, with the impelling lever in the posit-ion of rest, the line joining the point of attachment 51 and the axis of rotation 53 lies in the direction of the braking or of the restoring force.
  • the points 55, 51', and 53 lie in one line. In this manner the brake is caused to be supplelnentarily loaded, during the iinpelling movement of the impelling lever, this supplementary straining of the brake spring being initiated not suddenly, but gradually and starting from nought.
  • the stop surface 36 "rolls around the stop surface 37, and thus rocks the impelling lever 33 which in its turn, through the cooperation of its" controlling surface 30 with the controlling surface 31 on the breech carrier 10, jerks back the l-atter with an evenly accelerated movement.
  • the-breech carrier10 takes the released breech 12 along with it in the 'direction of the arrow p, until the breech action m, which is in a known manner under the action of a retracting spring, has reached the cooked position;
  • I I c After the braking of the barrel 1 and of the impelling lever 33, the compressed spring 58, as already mentioned, causes the barrel and the impelling lever to be reface 36 again rolling along thefixed stop surface 37. As soon as the surface 34' on the impelling lever comes in contact with the front wall-42 of the casing'6, thenbarrel 1 force of thecompressed spring 58.
  • the vabove-described automatic firearm is characterized by very great precision and long life, since, in consequence of the setting up of the accelerated; movements of the breech action with aprogressively increas- "ing velocity starting from nought and of the gradually initiated additional loading of thebrakingspring by the impelling 'deand the moving parts areprotected-from wear and damage to the greatest possible rextenti'
  • the construction described herein and illustrated in the accompanying drawings represents only one example of the andthe casing 6- are returned with the full 70 vice, shocks-and jolts are entirely obviated,
  • a casing attached to the said barrel, side Walls on the said casing, bearing parts on the said side Wallsand lever, recesses in the said bearing parts adapted to enable the said lever to be inserted between the said side walls and to be rotatable about an imaginary axis of rotatiolnand a controlling surface on the said breech mechanism, the
  • controlling surfaces being adapted to.
  • an automatic firearm as claimed impelling lover of a braking device comprising means for braking and returning the said barrel and means for damping the reflex movements of thesaid sliding barrel produced bythe restoring force and going beyond the said position of rest, means for connecting the saidimpelling lever tothe said brakingdevice and for enabling the said braking device to be additionally strained during the impelling movement of thesaid impelling lever, the said braking device being, attached to thesaid impelling lever through articulating ;means on the saidi'mpelling lever.
  • the combination with the said impelling lever of a braking device comprising means for braking and returning the said barrel-and means for damping the refiex movements of the said sliding barrel produced by the restoring force and going beyond the said position of rest, means for connecting the said impelling lever to the said braking device and for enabling the said braking device to be additionally strained during the impelling movement of l braking action :upon the :movement of said barrel and'toreturn said barrel into the ling lever being located within, the said recess.
  • a casing attached to said barrel and having side walls provided with segment-shaped grooves, and segment-shaped bearing members on said lever engaging in said grooves and permitting interchanging of said lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US544843A 1930-06-30 1931-06-16 Automatic firearm Expired - Lifetime US1906800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS157074X 1930-06-30

Publications (1)

Publication Number Publication Date
US1906800A true US1906800A (en) 1933-05-02

Family

ID=5449751

Family Applications (1)

Application Number Title Priority Date Filing Date
US544843A Expired - Lifetime US1906800A (en) 1930-06-30 1931-06-16 Automatic firearm

Country Status (6)

Country Link
US (1) US1906800A (fi)
BE (1) BE380705A (fi)
CH (1) CH157074A (fi)
DE (1) DE595601C (fi)
FR (1) FR719378A (fi)
GB (1) GB381542A (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058398A (en) * 1959-12-23 1962-10-16 Aircraft Armaments Inc Automatic machine gun with recoiling barrel and hydraulic accelerator
US3500718A (en) * 1967-08-23 1970-03-17 Stoner Eugene Recoil operated automatic gun
US3512449A (en) * 1965-09-29 1970-05-19 Stoner Eugene Accelerator for the bolt carrier of an automatic gun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058398A (en) * 1959-12-23 1962-10-16 Aircraft Armaments Inc Automatic machine gun with recoiling barrel and hydraulic accelerator
US3512449A (en) * 1965-09-29 1970-05-19 Stoner Eugene Accelerator for the bolt carrier of an automatic gun
US3500718A (en) * 1967-08-23 1970-03-17 Stoner Eugene Recoil operated automatic gun

Also Published As

Publication number Publication date
FR719378A (fr) 1932-02-04
CH157074A (de) 1932-09-15
DE595601C (de) 1934-04-19
GB381542A (en) 1932-09-29
BE380705A (fi)

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