IL33020A

IL33020A - Self loading pistol comprising a grip of synthetic material

Info

Publication number: IL33020A
Application number: IL33020A
Authority: IL
Original assignee: Heckler & Koch Gmbh
Priority date: 1968-09-18
Filing date: 1969-09-17
Publication date: 1973-02-28
Also published as: NO133947C; DE1728251C3; US3696706A; CH494385A; DE1728251A1; ES371599A1; CH494384A; GB1279825A; FR2018331A1; BE739038A; SE373434B; NO133947B; IL33020A0; AT298300B; DE1728251B2

Description

SELF CHIP OF This invention relates to a pistol comprising a hand grip and a breech assembly which is dlsplaceable in its longitudinal direction relatively to the hand In pistols known heretofore the grip member consists usually of a wrought steel member which is faced in the region of the hand grip with a grip shell of synthetic The use of such a grip member consisting of steel was considered heretofore to be necessary because the grip member accommodates the barrel and serves for guiding the breech Although German discloses a gun with a stock made of plastic material it does not disclose a pistol with a grip consisting in its entirety of plastic and still an pistol grip would have to be designed to solve in a satisfactory the problems associated with the fixing of the the guiding of the slide and the mounting of the trigger Universally experts were heretofore of the opinion that the forces occurring therein and the stability necessary for good firing accuracy was attainable only by means of such a grip member consisting of the grip member must also offer the possibility of mounting the trigger assembly and of guiding and accommodating the the high costs were tolerated which occur in the production of such grip The invention is based on the problem to simplify the production of the grip member and to lower the costs connected This problem is solved according to the invention in that the grip member of the pistol according to the invention consists completely of a synthetic resin member into which metal parts are pressed or cast which are required for receiving the mounting the trigger guiding the breech assembly and locking the It is obvious that such a grip member pressed or cast from a synthetic resin is produceable very much more simply and at very much lower costs than a grip member consisting of steel and for example in a The costs incurred thereby are not considerably higher than the costs which had to be provided heretofore for the production of the grip shells consisting of synthetic Also pressing or casting therein the required metal parts and the production of the latter does not involve very high and in particular these costs are not greater than the costs which were necessary for machining the grip The reduction of costs obtainable by the invention is consequently very By the use of a grip member of synthetic neither the life nor the firing accuracy of the pistol are in contrast to the prevailing prejudices generally held by the The firing accuracy of the pistol depends only upon the fact that the breech assembly carrying the sighting device assumes after each shot an exactly defined rest position relatively to the The defined position of the assembly can ensured stantially independeatly of the construction of the grip member by suitable guide members on the on the metal part serving for receiving the and on the breech assembly Also the forces produced during shooting affect on the one hand the barrel and the part holding the barrel and on the other hand the displaceable breech whereas otherwise the grip member remains unloaded by these Moreover a grip member of synthetic resin is anyway stiffer and less resilient than the hand by which the pistol is held during shooting so that the grip member is loaded only by which can be absorbed by the The result of the above considerations that a grip member of synthetic resin can fulfil all the demands which must be made on a grip so that the opinion which undeniably prevails amongst experts that grip member must consist teel was overcome b the inventioriand new ways were opened to the In a preferred embodiment of the a trigger casing is disposed above the hand grip of the pistol and is provided with two side parts the lower edges of which are embedded in the grip member and the forward ends of which are connected to each other by a block into which the rear end of the barrel is and the rearward ends of which are connected to a transverse rail cast In this an extremely stable frame is provided which is capable of absorbing high loads and which simultaneously can be securely connected to the grip member because substantially the whole periphery of the frame is At the same the advantage is obtained for the production that it is unnecessary to press or cast a plurality of individual parts into the synthetic resin Simple guidance for the breech assembly can obtained in a simple manner in that the breech assembly is provided at its forward end with a transverse wall having a passage opening therein for the and that the breech assembly is guided on the end of the barrel projecting from the block whereas the breech member is provided in the region of its rearward end on the inside with longitudinal grooves in which ends of the transverse rail projecting beyond the grip member engage as guide In this manner the breech member is thus guided exclusively at the rigid metal frame and the that is to say a unit comprising the so that on the one hand the above mentioned exactly defined position of the breech member is ensured in relation to the and the forces occurring during a shot affect only these For it is particularly advantageous when the main spring is formed by a coil pression spring disposed concentrically around the barrel and which is supported at the one end by the block and at the other end by the transverse wall of the breech In a preferred embodiment of the the trigger is by a slide member which is guided at its upper and its lower edge as well as at its rear section in appropriate recesses in the grip The use of such a slide member as trigger has the particular advantage that no bearing points for bearing pins or the like must not be provided in the grip member which would be ed to a relatively high load and would make the use of pressed in or cast in bearing bushes Moreover the assembly of such slide member is particularly because it need only be pushed into the recesses For holding the trigger in the there may serve for example a known slidable safety In order to hold it in its rest the trigger may be loaded a coil compression spring which engages in an opening provided at the rear end of the slide member and is supported on a transverse rail which is inserted behind slide member in grooves which are provided on the inner sides of the side walls of the grip The spring and the transverse rail also are adapted to be inserted simply into the recesses provided for this purpose in the grip The trigger constructed as a slide member can be connected by trigger rods to the trigger assembly mounted in the trigger the trigger rods being guided in longitudinal slots of the side wall of the trigger casing and their forward ends engaging y means of obliquely inwardly and downwardly directed lugs in recesses of the slide and their rearward ends being provided with cranked portions projecting into the trigger These trigger rods may be constituted by simple punched parts of sheet metal which can be produced at very low costs and which do not require much In they can easily guided past the sides of the block which receives the rearward end of the In a particularly preferred embodiment of the the pistol is provided with a buffer device onto which the breech assembly runs at the end of its backward or recoil This buffer device keeps very hard shocks away from the grip which otherwise could be produced when the breech assembly impinges in its hindmost and also permits the use of the invention in pistols of large calibre and in pistols with a continuous firing For pistols with a continuous firing the additional particular advantage is attained that the pistol can be held better in aim because the hardness of the recoil shock is The buffer device may preferably be assembled below the barrel in the block accommodating the barrel so that the breech assembly runs against the buffer device by the rear side of its forward transverse This arrangement has the advantage that buffer device does not require valuable space and moreover is inserted into a part which must in any case be extremely solid for receiving the in a preferred embodiment of the the block is provided below the barrel with a forwardly open bore into which a spring preferably a spring system provided with brake is inserted on which a buffer member is supported which is held by a screw and which extends through the screw In a further embodiment of the invention protection of the breech assembly against release from the grip member can be obtained in that a slider which is displaceable dicularly to the barrel and which is provided with an is disposed at the front end of the the recoiling breech assembly impinging on the abutment which is out of the path of the breech assembly by means of the slider so that the breech assembly can be displaced beyond its hindmost operating position to such extent that the guide grooves provided at the rear end of the breech are disengaged from guide projections provided at grip This arrangement has the advantage that the members needed therefor are fixed to the block and therefore need not be separately connected to the grip Moreover the grip member is not additionally loaded by these In this case the slider is preferably disposed above the trigger aperture of the grip member and can be into the trigger aperture out of its operative position in which its lower end which is provided with a like head extending over the whole width of the grip member is flush with the underside of the grip member limiting the trigger The head permits a good grip of the slider to be obtained without members of any kind being present on the outside of the grip member in a disturbing When the slider has been pulled down so that the breech sembly can be moved into a position in which it can be released from the grip the slider projects disturbingly into the trigger aperture of the grip member surrounded by the trigger loop whereby an indication is given that the pistol is not ready for the slider can provided on its rear side with undercut projections which engage fittingly into corresponding recesses on the trigger when the slider is moved out of its operative The trigger is detained in this manner in its rest position and can then be actuated only when the slider is located in its operative position and thus the firearm is in a state ready for The operative reliability of the firearm is significantly increased in this Theslider ma be held in its operative position by a detent device which is formed by a detent member disposed in the block and a corresponding recess on the inside of the When the pistol according to the embodiment described above is provided with a buffer the abutment disposed on the slider is formed by a plunger which is displaceably mounted in the slider and the inner end of which rests against the buffer in the block and thereby transmits to the buffer and the spring arrangement supporting the the forces occurring when the recoiling breech assembly is For the case that also in such an embodiment of the pistol a detent device for the slider is provided the detent member is preferably disposed in the buffer and the recess is disposed in the Further details and features of the invention will be apparent from the following ifi which the invention is described and explained in detail with reference to the embodiment illustrated in the accompanying The features which can be found in the description and the drawings may be utilised in other embodiments of the invention individually by themselves or severally in any bination0 In the 1 is a side view of the grip member of a pistol according to the invention with the barrel inserted 2 is a section on the line through the grip member according to 3 is a longitudinal section through the upper part of a pistol with a grip member according to and illustrates the breech assembly of the pistol according to partly in a view from below and partly in A grip member 1 of a pistol illustrated in the drawings by way of consists completely of a synthetic resin material and is provided only on its upper side with metal parts 2 to 6 which have been pressed or cast into the grip member during the production The terms and used herein are to comprise all suitable methods for forming the moulded part of synthetic resin which constitutes the grip member The metal parts 2 to referred to form a stable frame which is limited by two lateral wall parts 3 and of sheet metal which are connected to each other at their forward end by a metal block 2 and at their rearward end by a transverse rail Furthermore a guide member 6 is attached to the verse rail and serves in a manner not illustrated in detail for the purpose of attaching the pistol to the front end of a shoulder The lower section of the block 2 and the lower edges of the lateral wall parts 3 and are embedded in the synthetic resin material of the grip member 1 which is provided with an upper edge 7 which extends in a straight line substantially along its whole which however is provided at its rear end with an upwardly directed section 8 in which the whole guide member 6 a major portion of the transverse rail are The ends of the transverse rail project beyond the lateral wall parts and of the and form guide projections for the breech assembly 10 of the fireai illustrated in and As may be seen from the breech assembly 10 is provided at its rearward region with guide grooves 11 in its inner into which the guide projections 9 The forward end of the breech assembly 10 is guided on the forward part of the barrel 12 which is inserted into the block For this purpose the breech assembly 10 is provided at its forward end with a transverse wall 13 which is provided with a passage opening l for the forward end of the barrel A main spring of the pistol is disposed concentrically around the barrel 12 and is supported at one end by the front face of the block 2 and at the other end by the inner face of the transverse wall 13 of the breech assembly The frame including the lateral wall parts 3 and forms simultaneously the trigger casing of the pistol and is disposed in the region above the hand grip of grip member A trigger assembly 16 is disposed in this trigger but as it does not form the subject of the invention it is not explained in the assembly is connected to a trigger 17 disposed in the grip member 1 by means of two trigger rods 18 and 1 which are guided for a major part of their length in longitudinal slots 20 and 21 of the lateral wall parts 3 and The trigger 17 is constituted by a slide member the lower edge of which engages into a corresponding groove 22 and the upper edge and rearward part of which engage into a ponding recess 23 of the grip member connection between the trigger 17 and the 18 and 19 is produced by means of lugs and 2 which project obliquely downwardly and inwardly from the forward ends of the trigger rods 18 and 19 extend past the outer surface of the block 2 and engage into corresponding recesses of the trigger The rear ends 26 and 27 of the trigger rods 18 and 19 are cranked inwardly and are guided by means of longitudinal slots 28 on pins 2 inserted into the lateral wall parts The trigger 17 is held in its rest position by a coil compression spring 30 one end of which engages in a recess at the rear end of the trigg 17 and the other end of which is supported a collar 32 of a guide pin 33 which in turn is inserted into a transverse rail The ends of the transverse rail engage in grooves which are provided at mutually oppositely disposed locations of the inner walls of the hollow grip member 1 and which are limited by rails For securing the firearm a known slide safety catch 37 provided which extends through corresponding recesses in the grip member 1 and a recess in the trigger The pistol illustrated way of example is furthermore provided with a buffer device which serves to intercept the recoiling breech member at the end of its recoil movement and to prevent the breech from impinging hard on parts of the grip member 1 or metal parts connected For this purpose a spring arrangement is accommodated in a bore i of the block 2 receiving the barrel the bore being located below the barrel and open and the spring arrangements comprising three coil compression springs and which are concentrically disposed relatively to each other and which are supported on the bottom of the bore the forward ends of the springs rest against a plate inserted into the In front of this plate there is located a further coil compression spring into the windings of which brake rings are inserted the peripheries of which rest against the inside of the bore A cylindrical buffer member is disposed concentrically with the spring and the brake rings it rests by a collar against the forward end of the coil compression spring and is held i the opening by means of a screw ring into which extends the forward end of the buffer member The collar is disposed at such a spacing from the forward end of the buffer member that the face of the buffer member finishes flush with the ring 0 and the front face of the block a slider member is disposed at the end of the block 2 between inwardly cranked rails which are located at the forward end of the block and is mounted for displacement perpendicular to the The slider member 1 extends in its operative position close to the underside of the barrel 12 and terminates at its other end flush the underside of the grip member 1 which limits the trigger aperture At its lower end the slider member is provided with a head which is enlarged like a hammer and which extends over the whole width of the grip member 1 so that it can be gripped well from both sides for removing the slider member the grip A plunger 55 displaceably mounted in the slider member and is located in the operative position of the slider member in the extension of the buffer member and at the same time in the path of a lower edge of the forward transverse wall 13 of the breech member The slider member with the plunger 55 held in the operative position by a detent device is formed by detent pin 57 mounted in the buffer member and an opening provided in the rear face of the plunger is clear that the breech member 2 runs back after firing a shot the lower edge of the forward transverse wall 13 impinges on the plunger 55 transmits the movement of the breech member to the resilient buffer member Initially only the helical compression spring and the brake rings 7 affect the buffer member and decelerate the breech member but eventually the rear face the buffer member comes into engagement with the plate and displaces the latter against the force of the springs during the further rearward Thereby the resistance opposing the rearward movement of the breech member 2 is increased while the brake rings maintain their effect so that good damping of the movement is In this manner it is possible to reduce progressively the peak forces which occur during shooting and are caused by the recoil so that shooting with the pistol according to the invention is much more increased firing accuracy is obtained and the pistol can be held better on target during continuous the pistol suitable for shooting cartridges of large In many cases it may even be sufficient to use a single continuous spring provided with brake rings in place of the two springs and and to omit the plate The disposition of the slider member the plunger 55 front of the end face of the block 2 with the buffer device has the purpose to permit simple removal of the breech member 2 from the grip member While in using the pistol the return path of the breech is limited by abutment against the plunger slider member permits the plunger 55 to be withdrawn from the path of the lower edge of the end face 13 of the breech member and thereby enables the breech member 2 to perform a movement beyond its normal end When the slider member 51 pulled down into the range of the trigger aperture 53 by means of the head plunger 55 enters into a corresponding recess grip member The breech 2 can then be pushed manually against the force of the closing spring in a rearward direction past the plunger 55 to such extent that recesses 60 which connect the guide grooves 11 disposed at the rearward end of the breech member 2 to the edge of the breech member travel into the region of the guide projections 9 and the breech member 2 can be lifted upwardly off the guide The breech member 2 can then be lifted off the barrel 12 of the firearm in a forward Conversely the breech member 2 can be attached to the grip member 1 by simply pushing the breech member 2 upon the forward end of the barrel 12 and introducing the projections into the recesses 60 and the guide grooves The pistol is ready for use again after replacement of the breech member the slider member returned into its starting position in which the plunger 55 limits the path of the breech member In order that a shot cannot fired without the slider member and the plunger 55 having been returned to their operative the slider member provided at its side adjacent to the block 2 with a recess 61 into which projects the forward end 62 of the trigger The recess 61 is provided at its inside with projections 63 which engage in grooves provided at the outer sides of the forward end 62 of the trigger when the slider member located in its operative Therefore as long as the slider member has not been pushed back into its operative position it is in engagement with the trigger 17 and prevents actuation of the It is therefore impossible that a shot can be fired and thereby the breech member 2 is released from the grip member 1 because it runs back into a position in which the guide projections can move out of the guide grooves It is understood that the invention is not limited to the embodiment illustrated by way of but that modifications thereof are possible without the scope of the invention being In particular the invention is independent of the trigger system selected and it is also possible to construct pistols according to the invention without a buffer although the buffer in conjunction with the special kind of guidance of the breech member is particularly suited for pistols which are provided with a grip member consisting exclusively of synthetic it is understood that in the grip part of the grip member the guides required for inserting a magazine and at the lower end of the hand grip a or resilient latch for detaining the magazine are This latch may be mounted for example on a pin pushed into the grip For this a sufficient number of constructions are known so that an illustration and description of the magazine holding device can be it may be mentioned that an ejector and an ejection opening for empty cartridge shells may be attached to the breech member 2 in a conventional while the ejector may be formed by a lip which may be bent away a wall part of the If the grip member of the pistol is provided at its rear end with a guide member for attachment to a shoulder a second guide member may be provided at the lower end of the hand grip of the grip member insufficientOCRQuality

Claims

1. What we claim Is : 1. A self loading pistol comprising a grip member member displaceable In its longitudinal direction relative to said gr p member, characterised in that said member has a hand gri and res n consists entirely of a synthet1c¾rmater1al , a metal lic trigger casing disposed above said hand grip, said trigger casing comprising two lateral wal l parts, said wall parts having lower edges which are embedded in said grip member and are connected to each other at their forward ends by a block in which block the reareard end of a barrel is inserted and said wall parts having rearward ends which are connected together by a transverse rail cast therearound, the ends of said transverse rail project beyond the outer surfaces of the grip member and constitute guide projections for said breech member.

2. A pistol according to claim 1 , characterised 1n that the breech member 1s exclusively guided at Its forward end by a transverse wall on the barrel and, in the region of its rearward end, by a longitudinal groove, arranged 1n the Inside surface of the guide projections. ) A pistol according to claim 1, wherein a trigger is formed by a plate-shaped slide member which is guided at its upper and at its lower edge as well as at its rearward section in corresponding recesses of the grip member. /£. , A pistol according to claim wherein the trigger is loaded by a coil compression spring which engages in a recess disposed at the rear end of the trigger and is supported on a transverse rail which is inserted behind the trigger in grooves provided at the inside.- of the grip member. A pistol according to claim έ, wherein the trigger is connected to the trigger assembly mounted in the trigger, casing, by means of trigger rods which are guided in longitudinal slots of the lateral wall parts of the trigger casing and the forward ends of which engage by means of obliquely inwardly and downwardly directed lugs in recesses of the trigger, and the rearward ends of which are provided with cranked sections which project into the trigger casing. ^f.6. A pistol according to claim 1, wherein a buffer device is provided onto which the breech member runs at the end of its recoil movement. 6 7. A pistol according to claim έ, wherein the buffer device is disposed below the barrel and located in the block receiving the barrel, and wherein the rear face of the forward · transverse wall of the breech member runs against the buffer device during the recoil movement of the breech member. /j0.8. A pistol according to claim ^f, wherein the block is provided below the barrel with a forwardly opening bore into which a spring system preferably provided with brake rings is inserted, and a buffer member held in position by a screw ring is supported thereon and extends through the screw ring. 8 htt* 9. A pistol according to any of claim AM, wherein a slider member with an abutment, is disposed at the forward end of the block and is movable perpendicularly to the barrel, the recoiling breech member being arranged to impinge on the abutment which, can be moved out of the path of the breech member by means of the slider member, whereby the breech member can be displaced beyond its rearmost operative position to such extent that the guide grooves provided at the rearward end of the breech member are disengageable from the guide projections provided at the grip member. v . , , 9 ££ 0. A pistol according to claim ft. wherein the slider member is disposed above the trigger aperture of the grip member and can be displaced into the trigger aperture out of its operative position in which the lower end of the slider member which is provided with a hammer-like head extending over the whole width of the grip member is flush with the underside of the grip member limiting the trigger aperture. 10 11. A pistol according to claim ig, wherein the slider member is provided at its rear side with undercut projections which engage fittingly into corresponding recesses at the trigger when the slider member has been displaced from its operative position. 11 i½.1 . A pistol according to any of claim 1", wherein the slider member is held in its operative position by a detent device which is formed by a resilient detaining member disposed in the block and a corresponding recess at the inside of the slider member. 9 3r£.1

3. A pistol according to claim 3ri, wherein the abutment disposed at the slider member is formed by a plunger which is displaceably mounted in the slider member and the inner end of which rests against the buffer member disposed in the block. 12 46.1

4. A pistol according to claim i½, wherein the detaining member is disposed in the buffer member and the recess is disposed In the plunger. 1*. ΉΜ A self-loading pistol substantially as herein des- ©ribed and illustrated.! A.E. MULPORD Attorney for Applicants