Патент USA US2108026код для вставки
Feb. 8, 1938. ' ' c. sUTTER ET A1. lAUTOMATIC 2,108,026 _ FIREARM ' Filed Aug. 13, 1936 7 Sheets-Sheet 1 Feb.. 8, 1938. 2,108,026 c. SUTTER ET Al. AUTOMATIC FIREARM ‘7 Sheets-Sheet 2 Filed Aug. 13, 1936 ' , Sme/Yiwu» @y Char/e5 Suffer Äfvdfe/ 500556)/j ' «6 Feb. 8, 1938. _ c. suT‘rER ET AL 2,108,02Ö AUTOMATIC FIREARM Filed Aug. 15, 1936 '7 Sheets-Sheet 5 Lm’. M @www/ rä “È m ~El kD.? w , / / \\ /ß/ß w HRNYN .JIT .||.|.:s.5: . - PMU, ,.Y .w `N wv N. w< - ,_ WM »Nïtîì É`„ 1.- d.#œ R @Y I Feb. 8, 1938. C. SUTTER ET AL 2,108,026 I AUTOMATIC FIREARM Filed Aug. 15, 195e 7 Sheets-Sheet 4 Enf ~ Wümme/L85 Feb. 8, 1938. 2,108,026 c. SUTTER En’ A; AUTOMATIC FIREAHM Filed Aug. l5, 1936 '7 Sheets-Sheet 5 .Ä m kw yì m; V w É„fm@5%wad„„O m.¿iWU, M0 c. SUTTER ET Ax. ZJOSßÈ@ AUTOMATIC FIREARM Filed Aug. l5, 1956 ~ )5% '7 Sheets-Sheet 6 94%@ CHIOfL/vumáß Feb. 8, 1938. c. su'rTER ET’ AL. AUTOMATIC 15mm RM ` Filed Aug. 15,' 193e 2,108,026 '7 Sheets-ShevaA 7 26' i5 l5 I4 ’/m ' / / />À /// . ~/' ïïI @e(u, lv ¿1 .41 5? 7v_ Y 7/ 4" 4 Q5 r-“ä lâ17 2,103,026 Patented Feb. 8, 1938 UNITED STATES PATENT -' oF'FlcE-i " 41,108,026A AUTOMATIC ‘FIREARM Charles Sutter, Suresnes, and André Roussel, , Courbevoie, France, assignors to Société ,An- » onyme Anciens yEtablissements lHotchkiss & Cie,l Levallois-Perret, France, a joint-stock company of France Applicaumiaugust 13, 193s, serial Nay-'95,880 ' y l :In GermanyJanuary 25,1936 vni> claims. To increase the rate- _of ñring'of automatic >fire ` ' Y (cl. sii-_27) _ ' whether the resilient elements- operate'as a rate 1 I 'arms it is customary to use resilientnelementsliw accelerator or as a scar damper, which store up the energy possessed, at'the ‘eridf „ According to another embodiment, the movable of its recoil, by the breech closure 'mechanism'of member comprises one or a plurality of oscillating the firearm, and restore it to the llatter Yat .the levers fulcrumed -about a ñxed pin and which are beginning of its return to battery, ' - y' ' "l During continuous iiring, devices of this kind do not increase the strain on the partsof the iirearm. But when it is desired to cease iìring, 10 the sear hasta stop the breech-closure mecha nism which is moving at high speed, and- is there by subjected to considerable strain which' can cause its breakage or that of other parts;l owing to this fact, it is advantageous to damp this shock " 15 on the sear by making the latter resilient. The invention relates to an arrangement which enablesthe same member 'to be used as a speed accelerator and as a damper for the sear. According to the invention, the mechanism of the firearm is subjected to the action of accelerat 20 ing members consisting of» resilient elements (springs, Belleville washers, rubber, etc.) which serve at the same time as damping members for the sear when the firing is stopped. For this purpose, the sear is carried by a mov able member which can be displaced in the direc tion towards which, when the firing is stopped, the sear is urged against the action of the above mentioned resilient elements, which constantly7 30 tend to hold the said- movable member and the sear intheir normal position.. ï The resilient elements are interposed between a part on which the breech-closure mechanism acts at the end of the recoil, and a part which follows 35 the displacements'of the movable member carry ing the sear, each of said parts being adapted to form an abutment for the resilient “elements when ‘ they are compressed by the other part. According to a modification, the resilient ele 40' ments constantly bear against the same ñxed abutment and are compressed in the. same direc tion by the mechanism oí the firearm and by the ‘- movable member carrying the sear. o According to an embodiment, the movable mem ber comprises a sliding member carrying a pin on which the sear pivots. . Said sliding member “carries a heel which forms one of the bearing parts of the resilient elements. pivotally connected to the sear. so that -for any forward'displacement of the latter there corre sponds‘an oscillating vvmovement of said lever or levers, which movement takes place against the action of the resilient elements. 10 The sear spring is placed between the sear and a ñxed member, and a knuckle guide or a sliding guide is interposed between said spring and said member. ~ „ _ » ' ‘ ‘ According to a modiiication, said spring is inter 15 posed between the sear and the‘movable member which carries it. « f . Other characteristics-and peculiarities of the invention will become apparent from the ensuing description taken in conjunction with the accom 20 panying drawings which show _diagrammatically l and merely by Way of example various embodi ments of the invention. In said drawings: ' - ' ` - Figs. 1 and 2 are sectional elevations oi' a first embodiment of the invention, Fig. 2 being a sec tional view along the line II-II of Fig. l. s I Fig. Sis a sectional elevation and, Figs.- 4, 5 and 6 are plan views of another modification'showing _ the members in the three diiïerent positions which soA they can take up. Figs. '7, 8, 9, and 10 are sectional elevations of Sour other modiiications. l In the embodiment of Figs. 1 and 2, the rate accelerator of the iirearm, comprises a~ member I subjected to the action of resilient elements 2 which can be of any kind (springs, rubber, Belle ville washers, etc.'). When the breech 3 reaches the end of its recoil, it strikes said member l and compresses the resilient elements 2~which thus 40 store up a certain amount of energy, which they subsequently restore to the breech 3 at the begin ning of its following forward travel, thereby caus ' ing an increase of the firing rate. According to the invention., said resilient ele ments 2 not> only operate for increasing the ñring ‘45 _ rate, but also play the part of a sear damper. For -this purpose, the sear 4 is mounted on a pin 5 carried by a sliding member 6 mounted so as to be subjected to the action of the resilient ele ments 2. For this purpose, -said member 6 is provided with a heel 1, and it is on said heel that which strikes iixed abutments when said sliding the said elements 2 bear. 'I'he assembly formed member moves, the latter moving in one direction by said elements 2, the buffer l and the heel '|,4 or the other, from. a mean position, according to , is lodged in, a fixed casing 8 which includes an 55 55 According toa modification, the sliding member itself contains the resilient elements which are in that case placed between two members either of .. 2 2,108,026 v abutment 9 against which can bear the collar I0 of the accelerator I. The member 8 abuts at the rear, at the left of Fig. 1, against a ñxed part I6 of the firearm. The initial compression of the elements 271s obtained by means of a nut H, which screws on the threaded end of the rod l2 secured to the accelerator l. In the usual manner, the scar d is actuated by a trigger 26 and has a nose i3 on. which hooks 10 the nose I 4 of the piston I5 of the ñrearm, when the tiring ceases. . The operation takes place under the ioliornng conditions: As long as the ñring goes on, the elements 2 operate exclusively to increase the firing rate, bearing, for this purpose, against the heel ‘l that is to say against the sliding member Ei which itself bears against the fixed part of the iìrear When, for ceasing fire, the scar is released, posed between the sear @i and the sliding member 6, that is to say between two members which move simultaneously. In the modification of Fig. ’7, the mechanism of the ñrearm acts on the member l through the instrumentality of a lever ‘it rocking about a ñxed pin 2! and pivotally mounted at 22 on. the said member l. The sliding member d acts on the same mem ber through the instrumentality of lts heel ‘ì. It will be noted that, in this case, the mechanism of the iirearm and the sliding member compress the resilient element 2 always in the same direc 10 tion. said element bearing against the threaded plug ll. Fig, 8 shows another embodiment in which the sliding member is replaced by a lever t 'Iol crumed about a iixed pin 23. The pin 5 oi' the scar d is carried byone of the arms of said lever, 20 the piston l5, at the beginning of its forward other arm of which is in contact with a sleeve 20 movement, hooks onto thenose I3 and tends to 'i against which the resilient element 2 acts. Said carry the sear 4 and consequently the member 6 lever t plays exactly the same part as the sliding forwards. The elements 2 damp this movement, member t of the preceding figures, that is to bearing for this purpose against the collar l0 that when the firing ceases, the forward move which itself bears against the abutment 9. By 'say ment of the scar is damped owing to the fact _ means of said damping, the strains to which the that said lever b compresses the resilient ele parts o1' the firearm are subjected when the firing ment i’. stops are considerably diminished. In the embodiment oi‘ Fig. 9, the pin of the The sear spring l? is, according to the inven 30 tion, mounted on a knuckle guide i8 so that it sear is also carried by one of the arms or" a lever 6, the other arm of which is engaged, vrlth a 30 can tum freely when the dammd forward move clearance J, in a slot of the member i integral. ment of the sear taires place. with the member l. Said clearance _permits the .es shown in 2, two accelerators i with a single slidingmember t5, can be advantageously ‘y 35 provided. The invention can, moreover, be carried out with a great number of modiilcations and it is only by> way of example that some other modiñ cations of same will be described. 40 ’ In the example of Figs. 3 to 6, the member 6 is integral with the casing t which, in this case, is therefore movable. Said casing has two bores in_each of which Vis arranged an accelerator damper assembly formed by the resilient elements 45 2, by a ñrst head l playing the part of an acceler ator and by a second head 7, playing the part of the heel 'l of Fig. l. A threaded plug it enables the initial compression oi? the elements ‘2 to be effected. ~The united assembly comprising the casing 8 and member ti is provided with a nose I9 which is struck by a part iii belonging to the moving mechanism of the iîrearm at the end of its recoil. The operation takes place under the following 55 conditions; Normally the damping members are in the po sitlon shown in Fig. 4. When at the end of the recoil, the part l5 strikes the nose i9 the assem bly 8_6 is displaced towards the left and comes 60 into the position of Fig. 5 thereby compressing the elements 2 against the head l. The energy stored up by said elements is restored to the mechanism of the firearm during the following stroke as previously described. During the ñring 65 the members are thus displaced at each shot be tween the position of Fig. 4 and that of Eg. 5. When the ñring ceases the nose id of the part I5 (which can be the piston of the firearm) hooks onto the nose i3 of the sear ä which then tends to be carried towards the right (position of Fig. 6) at the same time as the assembly 3_6. This movement is damped by the elements 2 which, in this case, bear against the head l which itself bears with its end l0 against the iixed abutment 9. 75 In this embodiment, a Sear spring il is inter free operation of said member as an accelerator during the iìring. When the firing ceases the upper arm of the lever ë tends to move towards the left compressing the elements 2 which there by ensure the damping of the forward move ment of the sear. The lever 5 has a third arm 25 on which acts ,the' sear spring il’ yand which also serves as an abutment for the lever ii. The em' preceding rent of Fig. l0 differs from the by the arrangement oi' the lever ii, which in this case acts on the resilient elements i? in the opposite direction to the member i'. has already been explained all these em ì'iodiu’lentsV have only been described and illus trateol in a purely explanatory and in no way limitative manner and they can be subjected to any useful modiñcations without exceeding the 50 scope of the present invention. We claim: . . 1. Automatic ñrearm comprising a mechanism having a reciprocating movement, a longitudi nally sliding member, a sear for stopping the ñr lng pivotally mounted on said member, a heel carried by said member and against which the breech mechanism abuts at the end of its recoil stroke, housings provided in said member and, in each of said housings, resilient means interposed 60 between an accelerator member mounted at one end of said housing and adapted to be carried rearwardly by said sliding member to compress the resilient means at the end of the stroke of the recoil mechanism of the firearm and a mov able heel mounted at the other end of said hous ing and adapted to be carried forwards by said sliding member when the ñi'ing is stopped, a ñxed abutment being provided against which said movable heel abuts when the accelerator comn presses said resilient means. 2. Automatic firearm comprising a mechanism ' ‘having a reciprocating movement, a firing rate accelerator member adapted to be carried rear Wards by the breech mechanism at the end of 75 3 2,108,026 its recoil travel, a membeì' displaceable relatively to the breech mechanism, a sear mounted on said displaceable member and displaceable on the one hand substantially longitudinally and on the other hand transversely for controlling the tiring, a trigger for controlling the trans verse movement of the sear, and a set oi resilient elements co-operating with said accelerator member which compresses said elements in its 'rearward movement and with said displaceable member which also compresses said set of re silient elements when the sear is carried for wards by the breech mechanism. 3. Automatic ilrearm comprising a mechanism having a reciprocating movement, a firing rate accelerator member adapted to be'carried rear wards by the breech mechanism at the end of its recoil travel,V -a member slidable longitudinally relatively to the breech mechanism, a sear piv 20 oted on said `slidable member, a trigger for rock ing' the sear, and a set of resilient elementsv co operating with said accelerator member, which having a reciprocating movement, a, ñring rate accelerator member adapted to be carried rear' wards by the breech mechanism at >the end of its recoil travel, a member displaceable rela tively to the breech mechanism, a sear'mounted on said displaceable member and displaceable on the one hand substantially longitudinally and on the other hand transversely for controlling the tiring, a trigger for controlling the trans verse movement of the sear, a set of resilient ele ments cooperating with said accelerator member which compresses said resilient elements in'its rearward movement and with said displaceable member which likewise compresses said set of resilient elements when the sear is carried for wards by the breech mechanism, and a sear spring interposed betwêe'n an 'arm of the sear and a part moving in synchronism with the sear. 8. Automatic firearm comprising a mechanism having a reciprocating movement, a iiring rate 20 accelerator member adapted to be carried rear wards by the breech mechanism at the end of compresses said elements in vits rearward move- A its recoil travel, a pivoting member mounted on a fixed pivot and a sear having a trunnion ec ment, and with said slidable member which like Wise compresses said set of resilient elements centric relatively to said iixed pivot pivotally when it is longitudinally forwardly displaced by _mounted on said trunnion, whereby said sear is the sear. . 4. Automatic firearm comprising a mechanism having a. reciprocating movement, a ñring rate accelerator >member adapted to be carried rear wards by the breech mechanism at the end of its recoil travel, a member displaceable relatively to the breech mechanism, a scar pivotally mount 30 I ed on said displaceable member, a trigger for rocking the sear, resilient means interposed be tween said accelerator member and a part mov ing in synchronism with the displaceable mem ber, and abutments on which the resilient ele'40 ments bear in both directions. 5. Automatic ilrearm comprising _ having a reciprocating movement, accelerator member adapted to be wards by the breech mechanism at a mechanism a firing rate carried rear the end o! its ¿recoil travel, a member slidable longitudinally relatively to the breech mechanism, a heel car ried by said slidable member, ya sear for con trolling the firing pivotally mounted on said slid ' able member, a trigger for rocking the sear, and resilient means interposed between said heel and Si) ` said accelerator member. 6. Automatic firearm comprising a mechanism having a reciprocating movement, a firing rate ‘ accelerator member adapted to te carried rear wards by the breech mechanism at the end of its recoil travel, a member displaceable relatively to the breech mechanism, a sear mounted _on said .displaceable member and displaceable on the -one hand substantially longitudinally and on the other hand transversely for controlling the fir C0 ing, a trigger for controlling the transverse movement of the sear, a set of resilient elements _co-operating with said displaceable member which compresses said elements in its rearward movement-and with said displaceable member which likewise compresses said set of resilient elements when the sear is carried forward by the breech mechanism, and a scar spring inter displaceable on the one hand substantially lon gitudinally and on the other hand transversely for controlling the firing, a trigger for control ling the transverse movement of the sear, a set 30 oi' resilient elements co-operating with said ac celerator member which compresses said elements in its rearward movement and with said pivoting member which likewise compresses said set of resilient elements when it is rocked by the sear. 9. Automatic iirearm comprising a mechanism having a reciprocating movement, a firing rate ` accelerating member adapted to be carried rear wards by the breech mechanism at the end of its recoil travel, a lever pivoting on a fixed fulcrum and having a trunnion eccentric rela tively to said fulcrum, a scar pivotally mounted on said trunnion, whereby said sear is displaceable on the one hand substantially longitudinally and on the other hand transversely for controlling the .45 firing, a trigger for controlling the transverse` movement of the sear, resilient means interposed between said accelerator member and said leverv and adapted to be compressed by each of these 4two members, and iixed abutments for limiting 50 the movements of said two members. 10. Automatic iirearm comprising a mecha nism having a reciprocating movement, a ñrst lever pivoting onìa fixed fulcrum and displaced by the breech mechanism at the end of its recoil 55 travel, a second lever pivoting on a iixed fulcrum ‘ and having a trunnion eccentric relatively to said fulcrum, a sear pivotally mounted on said trun nion, whereby said sear is displaceable on the one hand longitudinally and on the other hand 80 transversely for controlling the ñring, a trigger for controlling the transverse movement of the sear, resilient means interposed between the two free ends of said two levers and adapted to`be compressed by said levers, and iixed abutments limiting the pivoting movement of said two le vers. posed between an arm oi' the Sear and a swivel pressed against a iixed part of the iirearm. 7. Automatic firearm comprising a mechanism CHARLES SUTI'ER. ANDRE BOUSSEL.