EP0057733A1 - Halbautomatische Feuerwaffe - Google Patents

Halbautomatische Feuerwaffe Download PDF

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Publication number
EP0057733A1
EP0057733A1 EP81100818A EP81100818A EP0057733A1 EP 0057733 A1 EP0057733 A1 EP 0057733A1 EP 81100818 A EP81100818 A EP 81100818A EP 81100818 A EP81100818 A EP 81100818A EP 0057733 A1 EP0057733 A1 EP 0057733A1
Authority
EP
European Patent Office
Prior art keywords
hammer
barrel
pin
gun
camming
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.)
Withdrawn
Application number
EP81100818A
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English (en)
French (fr)
Inventor
Gary Wilhelm
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.)
LLAMA GABILONDO Y CIA SA
Original Assignee
LLAMA GABILONDO Y CIA SA
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 LLAMA GABILONDO Y CIA SA filed Critical LLAMA GABILONDO Y CIA SA
Priority to EP81100818A priority Critical patent/EP0057733A1/de
Publication of EP0057733A1 publication Critical patent/EP0057733A1/de
Withdrawn legal-status Critical Current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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
    • F41A21/488—Mountings specially adapted for pistols or revolvers
    • 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
    • F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
    • 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/64—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers
    • 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/74—Hammer safeties, i.e. means for preventing the hammer from hitting the cartridge or the firing pin
    • 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
    • F41A19/14—Hammers, i.e. pivotably-mounted striker elements; Hammer mountings
    • 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
    • F41A19/47—Cocking mechanisms
    • F41A19/48—Double-action mechanisms, i.e. the cocking being effected during the first part of the trigger pull movement
    • 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
    • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
    • F41A21/484—Barrel mounting means, e.g. releasable mountings for replaceable barrels using interlocking means, e.g. by sliding pins
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/22—Bearing arrangements for the reciprocating gun-mount or barrel movement
    • 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
    • F41A5/04—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated the barrel being tilted during recoil

Definitions

  • the present invention relates to guns. More particularly, the present invention relates to semiautomatic hand guns.
  • U.S. Patent N° 3,207,037 to Pachmayr et al discloses a barrel locating structure which is said to increase the accuracy of the gun by increasing the precision with which the barrel of the gun is located and confined relative to a bushing in the recoilable slide. It is stated that the increased accuracy is achieved by the unique design of a forward bushing which acts in the firing position to embrace both the upper side and the underside of the forward end of the barrel in a manner positively confining the barrel against looseness.
  • the cylindrically shaped forward end of the barrel is mounted to pivot very slightly about an axis transverse to the longitudinal axis of the barrel.
  • the bushing has surfaces which at the time of firing engage the underside of the cylindrical barrel at a location forward of the transverse axis and engage the upper side of the barrel at a location rear of the transverse axis.
  • the cylindrical barrel may move slightly out of engagement with the first set of surfaces and preferably into engagement with a second set of surfaces.
  • the surfaces on the bushing which engage the cylindrical barrel are said to be formed by "precision boring through the bushing along two slightly different intersecting axes, disposed at a very slight angle to one another, with the bushing held during boring by a suitable precision indexing fixture".
  • a conventional firing pin comprises a body having a relatively large cross-sectional area, the body having one end which is impacted by the hammer.
  • the other end of the body of the firing pin has a detonation pin integral therewith and extending toward the cartridge to be detonated.
  • a recurring problem with prior art firing pins is that the firing pin tends to break where the detonation pin is integrally attached to the body of the firing pin.
  • the firing pin is slidable through a chamber.
  • the chamber has a small amount of clearance which allows for movement of the firing pin. However, this clearance also allows for the firing pin to align at an angle with respect to the axis of the cartridge to be detonated.
  • the unintentional firing of a hand gun by preventing the impacting of the firing pin against the cartridge positioned within a chamber of the gun.
  • the unintentional firing of the gun usually occurs when the gun is mishandled or dropped. If the gun were to be accidentally dropped and the front portion of the gunwere to hit the ground, the momentum of the dropped gun might be sufficient to move the hammer forwardly to impact the firing pin. Thus, it is desirable to provide a mechanism which prevents the hammer from impacting the firing pin. Even if the hammer is prevented from impacting the firing pin, a further problem exists.
  • the firing pin has a defined mass and is usually biased away from the cartridge. However, the momentum supplied to the firing pin by virtue of the gun being dropped may be sufficient to move the firing pin forward to impact the cartridge. Thus, it is desirable to prevent the firing pin from being moved forward.
  • a typical firing pin mechanism includes an engagement means in the slide of the gun which engages the pin to prevent the firing pin from moving forward.
  • the engagement means is usually responsive to movement of the trigger.
  • a conventional hammer actuator comprises a lever having one end attached to the hammer at a point displaced from the hammer pivot point and a second end attached to a shoe which slides in relation to a slide in the frame assembly.
  • the shoe is biased upwardly by a spring sufficiently heavy to provide for a hammer strike having a force adequate to detonate the cartridge.
  • the shoe bears directly on the guide in the frame assembly. Friction is incurred as a result of the shoe sliding in direct contact with the guide of the frame assembly. Because of this friction, the hammer falls at a slower speed, a relatively large amount of energy is consumed in moving the hammer (a heavier spring is necessary) and the trigger pull is generally relatively heavy.
  • a significant and important drawback with prior art hammer actuators is that shootings may be less accurate : more time is required between the time at which the hammer is released and the time at which the hammer strikes the firing pin to detonate the cartridge. The hand of a person shooting the gun may move during this time.
  • the hammer may be drawn back by pulling the trigger.
  • the trigger is displaced a predetermined distance and the hammer has been moved a defined distance, the hammer is allowed to fall and strike the firing pin which, in turn, detonates the cartridge.
  • the energy of detonation forces the slide of the gun toward the rear of the gun.
  • the slide contacts the hammer and moves the hammer to the cocked position.
  • the hammer may then be released by a slight movement of the trigger.
  • the gun can be operated by two systems.
  • One system is known as the double action system.
  • the double action system when the gun is in the uncocked position, the trigger may be pulled to move the hammer backwardly and release the hammer to provide for striking of the firing pin by the hammer.
  • the slide moves toward the rear of the gun to thereby cock the hammer.
  • a single action system allows for release of the hammer when the hammer is in the cocked position. Also, the single action system provides a mechanism by which the hammer may be withdrawn by hand to the cocked position. With the single action system, each time the gun is fired, the hammer is cocked and a new cartridge is forced into the firing chamber. The gun will fire with the singke action system as long as the magazine continues to provide cartridges for the gun.
  • the double action, semiautomatic gun of the present invention is relatively simple in structure.
  • the gun includes a frame assembly and a slide assembly.
  • the frame assembly includes a frame having two outer walls which define a space. The space accomodates the internal parts of the frame assembly.
  • many of the internal parts of the frame assembly are located by four pins and an internal wall which is positioned between and integral with the two outer walls of the frame. Reference may be made to FIGURE 28 for a better understanding of the relationship of the internal parts of the slide assembly and the four pins and the internal wall.
  • the slide assembly includes a unique barrel locating structure.
  • the barrel locating structure of the present invention comprises a bushing having an internal, cylindrical wall and a barrel which is elongated and has a generally cylindrically shape.
  • the front portion of the barrel is positioned within the bushing.
  • the barrel defines a longitudinal and is pivotal about an axis which is transverse to the longitudinal axis.
  • the barrel is pivotal about the transverse axis into and out of the firing position. In the firing position, the longitudinal axis of the barrel and the front end of the barrel are inclined a slight amount downwardly.
  • the front portion of the barrel includes a first surface located to the front of the transverse axis, the first surface contacting the cylindrical wall of the bushing when the barrel is in the firing position.
  • the first surface is oblique with respect to the longitudinal axis of the barrel.
  • the front portion of the barrel also includes a second surface which is located to the rear of the transverse axis, the second surface contacting the cylindrical wall of the bushing when the barrel is in the firing position. This second surface is also oblique with respect to the longitudinal axis of the barrel.
  • the barrel, the bushing and the slide recoil toward the rear of the gun.
  • the bushing, the barrel and the slide move in unison toward the rear of the gun.
  • the rear portion of the barrel is cammed downwardly so that the longitudinal axis of the barrel is in a horizontal position.
  • the barrel pivots and the first and the second oblique surfaces disengage the internal cylindrical wall of the bushing.
  • the mechanism for camming the rear portion of the barrel downwardly includes a pin which engages a camming surface on the barrel.
  • the barrel is then restrained by the pin from further movement toward the rear of the gun. However, since the slide is not restrained by the pin, the slide continues to move toward the rear of the gun.
  • a spring mechanism in the slide assembly then drives the slide toward the front of the gun.
  • the rear portion of the barrel is forced upwardly and the first and second oblique surfaces on the front portion of the barrel engage the interior cylindrical wall of the bushing.
  • the barrel is now in the firing position and the gun may be fired again.
  • the shape of the front portion of the barrel may be best understood by understanding a method by which the barrel is machined.
  • a grinding tool is rotated around the barrel to provide a generally cylindrical land area on the front portion of the barrel.
  • the barrel is stationary when the land area is being ground.
  • the tool is withdrawn from contact with the barrel.
  • the barrel is then tilted about a line which is perpendicular to the longitudinal axis of the barrel.
  • the grinding tool is moved from the withdrawn position to a position wherein the tool begins to grind the land portion of the barrel.
  • the tool is rotated about the barrel to grind away a portion of the land area and to provide surfaces which are oblique with respect to longitudinal axis of the barrel.
  • the method of machining the barrel is particularly simple and provides for precision machining of the barrel.
  • the barrel is stationary. Since the tool may be rotated with great precision, a barrel having precise dimensions is provided.
  • the method of the present invention allows for precision grinding of the exterior barrel rather than precision boring of the bushing. It should be understood, that the method of grinding the front portion of the barrel is much more simple than a boring operation. Thus, the method of the present invention saves machining time and allows for the production of precision machined barrels. Because of the simple machining operation, precision machined barrels may be produced in large numbers.
  • the gun of the present invention also includes a safety mechanism for simultaneously preventing the firing pin from moving forward and the hammer from impacting the firing pin.
  • the firing pin which is moveable in response to the impacting of the hammer, includes a lever receiving aperture which receives a firing pin safety lever when the gun is in the rest position.
  • the firing pin safety lever comprises a generally elongated lever pivotally mounted about a pivot pin which is affixed to the slide of the gun. When the gun is in the rest position, one end of the lever is engaged in the aperture of the firing pin to prevent the pin from moving forward.
  • the safety mechanism includes a spring which biases the end of the lever out of the aperture in the firing pin.
  • the bias of the spring must be overcome and the lever must be rotated upwardly to force the end of the lever in the aperture.
  • the lever engages the firing pin and prevents forward movement of the firing pin.
  • the firing pin safety mechanism includes a hammer safety block.
  • the hammer safety block performs two important functions. One function of the hammer safety block is to urge the firing pin safety lever upwardly to lock the firing pin.
  • the hammer safety block comprises an elongated body portion including a firing pin lever camming surface on one end thereof. The second end of the hammer safety block includes a camming protrusion or camming pin which extends outwardly from the block and allows for the block to be pulled downwardly.
  • the hammer safety block is biased upwardly by a spring. The spring urges the hammer safety block upwardly which, in turn, urges the firing pin safety lever upwardly. In the rest position of the gun, the spring bias on the hammer safety block overcomes the spring bias on the lever. When the gun is in the rest position, the lever engages the pin to prevent the pin from moving forward.
  • the hammer safety block performs a second important function : the safety block contacts the hammer and prevents the hammer from moving forward. Protruding from one side of the hammer safety block is a hammer abutment which contacts the hammer and prevents the hammer from striking the firing pin when the gun is in the rest position. An abutment protrudes from the hammer and is designed tocontact the abutment on the hammer safety block. When the gun is in the rest position, the two abutments are aligned and in contact and the hammer is prevented from striking the firing pin.
  • the hammer safety block In order for the gun to be fired, the hammer safety block must be moved downwardly. When the hammer safety block is moved downwardly, the safety block disengages the firing pin safety lever and the lever moves downwardly. The firing pin safety lever moves downwardly and disengages the firing pin. Thus, the firing pin may now be moved forward by the striking of the hammer. The downward movement of the hammer safety block also moves the abutment on the hammer safety block out of alignment with the abutment on the hammer. Thus, the hammer may now strike the firing pin.
  • a hammer safety block actuator or "bird” provides for movement of the hammer safety block downwardly.
  • the term “bird” is descriptive of the shape of the hammer safety block actuator.
  • the hammer safety block actuator includes an elongated camming surface which engages the camming pin protruding from the hammer safety block. When the actuator is pivoted about a third major axis of the gun, the elongated camming surface slidably engages the pin and forces the hammer safety block downwardly. It should be understood that the actuator is rotated in response to movement of the trigger.
  • the double action bar described in more detail elsewhere in the application, provides for rotation of the actuator.
  • the gun of the present invention includes a uniquely designed firing pin.
  • the firing pin is segmented and includes at least two segments : a body portion and a detonation pin portion.
  • the body includes a cavity at one end thereof which receives the detonation pin.
  • the detonation pin has a generally elongated shape and terminates in a ball which fits within the cavity.
  • the rear wall of the cavity contacts the ball of the detonation pin and forces the detonation pin forward.
  • the body includes an aperture extending into the cavity and the ball of the detonation pin includes a transverse pin which fits within the aperture. The aperture is slightly larger than the transverse pin to allow for greater machining tolerances.
  • the gun of the present invention may be operated in either a double action manner or a single action manner.
  • an elongated double action is provided and is pivotally mounted at one end thereof on the trigger.
  • the second end of the double action bar includes a cam protrusion which protrudes through an aperture in the frame assembly and which also engages the hammer.
  • the hammer includes on one side thereof a recess defining a camming surface. The recess and the camming surface also define a camming hook on the side of the hammer nearest the double action bar.
  • the double action bar is biased upwardly so that when the hammer is in the uncocked position, the camming protrusion fits within the recess of the hammer.
  • a person operating a gun pulls the trigger toward the rear of the gun which in turn moves the double action bar toward the front of the gun and provides for engagement of the camming surface on the hammer by the cam protrusion of the double action bar.
  • the trigger is pulled, the hammer is withdrawn by the. action of the camming protrusion on the camming surface.
  • the double action bar moves to a point where the hammer has been rotated to a position to provide sufficient force to discharge the cartridge.
  • the camming protrusion slides past the camming hook defined by the recess in the hammer and the hammer is released.
  • the camming protrusion on the double action bar also operates the firing pin and the hammer safety mechanism.
  • the double action bar is located on the exterior of the frame and on one side of the gun. It is preferred that the double action bar be positioned on the right side of the gun.
  • the single action mechanism is desirably positioned on the side of the gun opposite from the double action mechanism, most preferably on the left side of the frame assembly.
  • the single action bar comprises an elongated bar having one end connected to the sear to provide for movement of the sear to release the hammer when the single action bar is moved forward.
  • the other end of the single action bar is connected to the trigger to provide for forward movement of the single action bar in response to movement of the trigger.
  • the force provided by the cartridge moves the slide backwardly to engage the hammer and move the hammer to the cocked position.
  • the double action and the single action bars are relatively simple in construction and relatively inexpensive to machine. Also, the double action and single action bars do not require close tolerance machining.
  • the gun of the present invention provides a hammer actuator having a shoe which includes ball bearing operated friction surfaces.
  • the ball bearing hammer actuator of the present invention comprises a hammer lever which is connected at one end to the hammer and which is connected at the other end to a shoe which is slidable in relation to a guide surface having a U-shaped cross section.
  • the guide surface is provided for by a portion of the frame which has a generally U-shaped cross section.
  • the shoe of the ball bearing hammer actuator includes a body having a generally rectangular shape which is designed to fit within the U-shaped guide. The shoe fits within the guide with a small clearance, the clearance allowing for use of ball bearings. Two edges of the body of the shoe include elongated recesses.
  • the recesses receive a plurality of bearing balls therein.
  • the bearing balls protrude from the bottom of the shoe and the sides of the shoe.
  • the bearing balls are in contact with the walls and the floor of the U-shaped guide.
  • a spring mechanism urges the shoe upwardly.
  • Bearing balls are only required on one side of the shoe because the second side of the shoe is out of contact of the with frame assembly. Because of the reduction in friction due to the use of bearing balls, the hammer of the gun falls much more quickly and with less energy loss.
  • the gun has a relatively light trigger pull and may be shot more accurately. The shooting accuracy is increased because there is less elapsed time between the time at which the hammer is released and the time at which the hammer strikes the firing pin.
  • the gun of the present invention provides a unique take down assembly which allows for the slide assembly to be detachably secured to the frame assembly.
  • the barrel includes at the rear end thereof a camming lug which extends from the slide assembly downwardly into the interior of the frame assembly of the gun.
  • the camming lug includes an aperture which defines a camming surface. As will be described hereinafter, the camming surface functions to move the barrel in and out of the firing position.
  • the aperture in the camming lug also forms part of the take down assembly.
  • the frame of the gun includes an aperture which extends through one side of the frame into the interior of the frame.
  • the aperture in the frame and the camming lug are in alignment.
  • a take down pin is releasably positioned within the aperture to retain the slide assembly with respect to the frame assembly.
  • the take down pin is releasably secured to the frame assembly by an elongated take down pin lock bolt.
  • the lock bolt is a generally flat rectangularly shaped part which is slidable with respect to the frame and which is biased toward the front of the gun.
  • the portion of the lock bolt which is adjacent the apertures in the frame and the barrel defines a locking surface or edge which engages a detent on the take down pin.
  • the take down pin has a generally elongated shape and has a length sufficient to span the width of the interior of the frame and to be engaged by both walls of the frame.
  • One end of the pin includes a locking groove in which the locking surface or edge of the lock bolt is positioned.
  • the lock bolt is manually moved toward the rear of the gun to disengage the lock surface with the locking groove.
  • the take down pin may then be manually withdrawn from the gun.
  • the slide assembly may be then removed from the frame assembly.
  • FIGURE 1 shows a right side plan view of the gun according to the present invention.
  • the take down pin has been removed and the grip parts for the handle of the gun have been removed in order to better show the various parts of the gun.
  • the gun is separable into two basic parts: the frame assembly 200 and the slide assembly 201.
  • the parts associated with frame assembly 200 will be apparent from the detailed description of the invention which follows.
  • Some of the major parts included in the frame assembly are the frame 500, the trigger 10, the hammer 100, the lock bolt 204, the single action bar 15, the trigger guard 501.
  • the frame 500 includes two holes 503 and 504 which allow the grip part to be secured to the gun.
  • the grip part is a conventional part that fits over both sides of the handle of the gun.
  • the grip part may be made of wood, plastic or other materials.
  • Frame 500 includes a space 505 which receives a conventional magazine, the magazine not being shown in the drawings for the sake of the simplicity.
  • the frame assembly 200 is also shown in FIGURE 2.
  • Two grip holes 506 and 507 allow for the securement of the grip part.
  • Protruding from the frame 500 is a magazine retaining button 508 which may be pushed to release the magazine from magazine accomodating space 505.
  • the gun includes a slide stop mechanism 509 and a single action bar cover 510. The function of slide stop 509 and single action bar cover 510 will be described with respect to FIGURE 30.
  • slide assembly 201 The parts associated with the slide assembly 201 will be apparent from the detailed description of the invention which follows. Some of the major parts included in the slide assembly 201 are slide 400, barrel 300, bushing 3 0 3, rear sight 511, front sight 512, manual safety 350, and the firing pin (not shown in either FIGURE 1 or 2).
  • FIGURE 28 shows the spacial relation of the parts of the various mechanisms.
  • the gun in the present invention has a particularly simple construction because many of the parts of the gun perform two or more functions. It is also important to note that many of the major parts of the gun are secured within the frame of the gun by the use of four pins, pin 127, pin 119, pin 101 and pin 12.
  • the various internal parts of the gun are positioned in relation to wall 157 which is an integral part of the frame.
  • FIGURE 28 shows the relation of the four pins and wall 157. It may be helpful to refer to FIGURE 28 while reading the following detailed description of the various mechanisms of the gun of the present invention.
  • FIGURES 1, 3, 4 and 5 show the take down assembly.
  • the take down assembly allows for the slide assembly to be detachably secured to the frame assembly.
  • FIGURE 1 shows a plan view of the right side of the gun.
  • the gun is separable into two major assemblies: the frame assembly 200 and the slide assembly 201.
  • the slide assembly 201 includes a barrel 300 having a camming lug 310 extending from the slide assembly 201 into the interior of frame 202.
  • Camming lug 310 includes an aperture 311 which receives take down pin 211.
  • the frame includes a right side wall and a left side wall, the walls defining a space for the interior parts of the gun.
  • a generally flat elongated take down pin lock bolt 204 is slidable in relation to frame 202 and is biased in the forward direction as shown in FIGURE 1.
  • One end of the lock bolt includes an elongated groove 205 which allows for the lock bolt 204 to slide with respect to retaining pin 101 which is anchored in frame 202.
  • a chamber 207 is machined in the interior surface of the lock bolt 204 and accomodates spring 208.
  • Spring 208 provides a biasing force which urges lock bolt 204 in the forward position shown in FIGURE 1. It should be understood that the interior surface of lock bolt 204 also has a recess with accomodates double action bar 15.
  • Wall 203 of frame 202 includes an aperture 209. Aperture 209 is aligned with aperture 311. As shown in FIGURE 1, the second end of the lock bolt 204 includes an aperture 210, the aperture 210 being out of alignment with the aperture 209 when the lock bolt is in the forward position shown in FIGURE 2.
  • FIGURES 3, 4 and 5 show various views of take down pin 211 which may be inserted in aperture 209 of the frame and aperture 210 of the lock bolt 204. Take down pin 211 also passes through aperture 311 on the barrel. It should be understood that FIGURES 3, 4 and 5 are enlarged views of the take down pin that would be used with the gun shown in FIGURE 1.
  • Take down pin 211 comprises an elongated body 212. Body 212 has a generally oval cross section and is adapted to be received by apertures 209 and 210. One end of the pin 211 includes a flat cap 213 which is designed to cover aperture 210 when the pin is inserted into the gun. Adjacent cap 213, body portion 212 includes a recess 214 having one side defined by body 212 and the other side defined by cap 213. The second end of pin 211 includes a second recess 215.
  • pin 211 In order to place pin 211 in the gun shown in FIGURE 1, the finger of a person operating the gun is placed on finger gripping ridges 216 and the lock bolt 204 is slid toward the rear of the gun to a point where aperture 210 is in alignment with aperture 209. Pin 211 may then be inserted through aperture 210, aperture 209 and aperture 311 in the barrel.
  • the interior surface of the left wall of the frame includes a recess which receives the second end of pin 211.
  • the left wall is opposite right wall 202 and neither the left wall nor the recess is shown in FIGURE 1.
  • edge 217 of aperture 210 engages recess 214 on pin 211.
  • lock bolt 204 is slid toward the rear of the gun, edge 217 disengages recess 214 and the pin 211 may be withdrawn.
  • lock bolt 204 may be released thereby allowing edge 217 of lock bolt 204 to engage recess 215 of pin 211.
  • the slide assembly may be removed from the frame assembly. The engagement of recess 215 by edge 217 retains the pin 211 and prevents loss of the pin 211 when the gun is being taken down.
  • FIGURES 6-11 the double action and single action systems are shown.
  • Trigger 10 includes an elongated lever 11 which is curved to provide for engagement by the finger of a person operating the gun. Trigger 10 is pivotal about pin 12 to allow for movement of the trigger between the position shown in FIGURE 6 and the position shown in FIGURE 9. Trigger 10 also includes an aperture 13 which receives for pin 14. Pin 14 is preferably integral with double action bar 15. Double action bar 15 has a generally elongated shape and has a length which spans the distance between the trigger 10 and the hammer 100. Double action bar 15 is pivotal about pin 14 and is biased to the rear of the gun by spring mechanism 16. Spring mechanism 16 includes a pivot pin 17 mounted in frame assembly 18.
  • guide rod 19 which is attached to pin 17 and which provides for positioning of spring 20.
  • the other end of guide rod 19 is mounted in and slidable with respect to guide spring anchor 21.
  • Guide spring anchor 21 includes hole 22 which allows for movement of guide rod 19 therethrough.
  • the right side of the frame assembly includes a shallow recess 49.
  • a steel spring 48 is positioned within the shallow recess 49. One end of spring 48 engages spring protrusion 47 and biases double action bar 15 upwardly. Thus, double action bar 15 is biased upwardly and rearwardly.
  • the end of the double action bar 15 opposite the trigger includes a mechanism for moving the hammer from the rest position shown in FIGURE 6 to a withdrawn position shown in FIGURE 9.
  • the double action bar is located on the right side of the gun and adjacent the frame assembly.
  • the right side of hammer 100 includes a recess 23 which defines a camming surface 24 and a camming hook 25.
  • Cam protrusion 26 protrudes from double action bar 15 through an aperture in the frame and is designed to engage camming surface 24 in response to movement of trigger 10.
  • Camming protrusion 26 has a front surface 27 which engages the camming hook 25.
  • Camming surface 27 also provides for movement of actuator 122 as is desribed with respect to FIGURES 20 and 21.
  • camming protrusion 26 engages camming surface 24 on hammer 100 and moves the hammer in the counterclockwise direction. After the hammer has been rotated a portion of the distance to the release position shown in FIGURE 9, camming protrusion 26 engages and rotates actuator 122 forward to provide for the release of the firing pin and hammer safety mechanism. When the double action bar reaches the position shown in FIGURE 9, camming protrusion 26 slides past camming hook 25 and the hammer is released. The hammer is forced forward to strike the firing pin.
  • single action system has as its principal component single action bar 51.
  • Single action bar 51 includes one end 52 which provides for release of hammer 100 and a second end 53 which is connected to trigger 10.
  • the single action side of trigger 10 includes a recess 54 which defines a camming surface 55, camming surface 55 allowing for the trigger to move the single action bar 51 from the cocked position shown in FIGURE 10 to the released position shown in FIGURE 11.
  • Single action bar 51 is positioned generally exterior to frame 18 and on a side of the frame assembly opposite double action bar 15.
  • End 53 of single action bar 51 includes a camming protrusion 56 which extends through an aperture in the frame assembly 18 into the interior of the gun.
  • Camming surface 55 of trigger 10 engages camming protrusion 56 to move single action bar 51 forward.
  • Single action bar 51 is pivotal about pin 57 which is integral with bar 51 and which extends into guide cavity 58.
  • Guide cavity 58 is an elongated slot in the frame which allows for pivoting of bar 51 about pin 57 and sliding of pin 57 with respect to frame 18.
  • the side of hammer 100 adjacent the single action bar 51 includes a recess 60 which provides a cocking surface 61 on hammer 100.
  • Sear 62 comprises a generally elongated lever which is pivotally mounted on pin 119. It should be understood that pin 119 is the same pin which holds hammer safety block 113 in position.
  • Sear 62 includes cavity 63, cavity 63 including a spring which urges sear 62 in the clockwise direction as shown in FIGURES 10 and 11.
  • Protruding from the upper region of the sear 62 is a hammer stop abutment 64 which abuts surface 61 and prevents falling of the hammer.
  • Abutment 64 extends through an aperture not shown in frame assembly 18 and is capable of being engaged by end 52 of single action bar 51.
  • End 52 includes a generally U-shaped hook 65 which provides for pulling of abutment 64 forward to thereby release hammer 100.
  • trigger 10 In order to release hammer 100, trigger 10 is pulled a slight additional distance. Movement of the trigger moves single action bar 51 forward a slight distance. Hook 65 of single action bar 51 engages abutment 64 and moves abutment 64 toward the front of the gun. When abutment 64 moves past surface 61, the hammer is released and is allowed to fall and strike the firing pin in the position shown in FIGURE 11.
  • the double action system shown in FIGURES 6, 7, 8 and 9 also provides for the release of the firing pin and hammer safety mechanism.
  • movement of trigger 10 to pull single action bar 51 forward also pulls double action bar 15 forward and provides for engagement of actuator 122 by camming surface 27 to thereby cam hammer safety block 113 downwardly.
  • end 52 is biased upwardly to provide for engagement of abutment 64 by hook 65.
  • Pin 68 allows for attachment of a biasing spring which urges the end 52 of single action bar 51 upwardly as shown in FIGURES 10 and 11. This can be done by a spring which is affixed to frame 18 and which is not shown in FIGURES 10 and 11. At this point, the gun is in condition for firing of an additional cartridge.
  • the double action bar 15 and the single action bar 51 are relatively easy to manufacture. Because of their relatively simple construction, the double action bar 15 and the single action bar 51 do not require close tolerance machining.
  • FIGURES 12, 13, 14, 15 and 16 show a mechanism for forcing the hammer from the cocked position to a position wherein the hammer strikes the firing pin.
  • This mechanism commonly termed a hammer actuator, imparts rotational momentum to the hammer so that the force of the hammer is sufficient to detonate the cartridge in the gun.
  • hammer 100 is pivotal about axis 1O1 between a withdrawn position, that is, a cocked position, and a position where hammer 100 impacts the firing pin.
  • FIGURE 12 shows hammer 100 in a position where hammer 100 has impacted the firing pin.
  • the force for moving hammer 100 forward is provided via connecting rod 150.
  • One end of connecting rod is pivotal about axis 151 position in hammer 100.
  • Axis 151 is spaced from axis ,101 to provide for pivotal movement of hammer 100 about axis 101 in response to the movement of connecting rod 150.
  • connecting rod 150 is retained within a groove 164 in hammer actuator shoe 152.
  • Connecting rod 150 is retained within groove 164 by connecting pin 153, connecting rod 150 being pivotal with respect to connecting pin 153.
  • Connecting rod 150 has a curved shape and forces rotation of the hammer from the cocked position in a counter-clockwise direction to the position of the hammer shown in FIGURE 12.
  • the frame 154 provides a generally U-shaped guide 155 having walls 156 and floor 157.
  • Guide 155 is an integral part of the frame of the gun. Walls 156 extends at right angles with respect to floor 157.
  • Hammer actuator shoe 152 has a generally rectangularly shaped body 162, the body being shaped and positioned within guide 155 to provide for a small clearance between body 162 and walls 156 and floor 157 of guide 155.
  • Hammer actuator shoe 152 is slidable with respect to the guide 155.
  • a particularly important aspect of the hammer actuator according to the present invention is the provision of ball bearing mechanism which reduces the friction between hammer actuator shoe 152 and guide 155.
  • body 162 includes ball bearing retaining recesses 165.
  • Each recess 165 receives and retains a plurality of bearing balls 166.
  • Recesses 165 extend only a portion of the length of body 162 so that body 162 defines retaining walls 177. Retaining walls 177 prevent bearing balls 166 from sliding out of recesses 165, but, allow for rotation of bearing balls 166.
  • Recesses 165 have a depth less than the diameter of bearing balls 166 so that the surfaces of bearing balls 166 contact walls 156 and floor 157.
  • the body 162 of hammer actuator shoe 152 is completely out of contact with U-shaped guide 155. Thus, the only friction surfaces are between bearing balls 166 and walls 156 and floor 157, and, between bearing balls 166 and bearing ball recesses 165.
  • one end of hammer actuator shoe 152 includes an elongated cavity 163.
  • Guide rod 158 and spring 169 are positioned within cavity 163 and guide rod 158 is slidable with respect to cavity 163. It should be understood that cavity 163 is of sufficient depth to maintain guide rod 158 within cavity 163 during the operation of the hammer actuator mechanism.
  • rod 158 is located within cavity 163 both in the cocked position of hammer 100 and the position wherein hammer 100 has impacted the firing pin.
  • Anchor 170 has a generally rectangular cross section and fits snugly within guide 155 of the frame.
  • One end of anchor 170 includes a transverse cylindrical hold 171 which receives pin 160.
  • Pin 160 is mounted in frame 154 and secures anchor 170 to frame 154 of the gun.
  • Cylindrical chamber 172 extends downwardly into the interior of anchor 170 and receives guide rod 158 and spring 169. The end of chamber 172 forms a spring retaining wall 173.
  • Rod 158 at its lower end has a generally cylindrical shape and is crimped a small distance from the end of rod 154 to provide flange 174 which protrudes radially outwardly from the rod a greater distance than the diameter of rod 158.
  • Flange 174 may be formed by simply clamping rod 158 between a viselike device which deforms the metal rod and provides two generally flat surfaces 175 and protruding flange 174.
  • chamber 171 includes an elongated aperture 176 on both sides thereof, only one aperture 176 being shown in FIGURE 15. Protruding flange 174 is received by aperture 176 and rod 158 is prevented from rotating within cavity 172.
  • pin 153 which retains connecting rod 150 within groove 164, is positioned at a point intermediate the upper and lower ends of hammer actuator shoe 152.
  • Rod 150 is forced upwardly and to the right toward the hammer 100 by spring 169.
  • An equal and opposite force urges the hammer actuator shoe 150 toward guide 155.
  • bearing balls 166 are maintained in contact with guide 155.
  • the ball bearing hammer actuator of the present invention allows the hammer to fall quickly, that is, the time between the release of a hammer and the time at which the hammer impacts the firing pin is reduced. Also, when the gun is fired from the rest position, that is, a position wherein the hammer is in its upright position as shown in FIGURE 12, the force necessary to pull the trigger toward the rear of the gun is reduced by the ball bearing actuator described above. Referring to FIGURE 6 and 9, in order to withdraw the hammer by use of the double action system, trigger 11 is pulled toward the rear of the gun. Hammer 100 is withdrawn from the position shown in FIGURE 6 to the position shown in FIGURE 9. The finger force necessary to pull trigger 11 toward the rear of the gun is reduced by the ball bearing actuator of the present invention. Because of this reduced force, the gun may be shot more accurately. Also, when the hammer is cocked manually, the ball bearing actuator of the present invention allows for cocking of the hammer with a reduced force.
  • FIGURE 17 shows a side view of a barrel when the gun is in its firing position, that is, a position just prior to the detonation of a cartridge positioned within the barrel.
  • Gun barrel 300 has a generally cylindrical shape and a longitudinal axis 301.
  • the front end 302 of barrel 300 is positioned within a bushing 303.
  • Bushing 303 defines a cylindrical internal surface 304.
  • the rear end 305 of the barrel includes a first lock protrusion 306 which has a generally annular shape and which extends a predetermined distance from the barrel. Lock protrusion 306 mates which a recess 307 in the slide of the gun.
  • the rear end 305 of barrel 300 includes a second lock protrusion 308 which similarly mates with detent 309 provided on the slide of the gun.
  • the rear end 305 of the gun also includes a downwardly protruding camming lug 310 which includes aperture 311 defining camming surfaces 312 and 313.
  • Aperture 311 defines a first camming surface 312 which receives takedown assem- ' bly pin 211 when the gun is in the firing position.
  • Aperture 311 also defines a second camming surface 313 which receives the takedown assembly pin 211 when the barrel has recoiled as shown in FIGURE 18.
  • Axis 314 is transverse to the longitudinal axis 301 of barrel 300.
  • the intersection of axis 301 with axis 314 defines a pivot point 315.
  • the barrel pivots about a line which is perpendicular to both axis 301 and axis 314 and which intersects point 315.
  • the barrel 300 has a generally cylindrical shape.
  • the front end 302 of barrel 300 has been machined to provide a cross section which is no longer cylindrical.
  • Barrel 300 has a generally cylindrical shape and includes at one end thereof, a raised land area 325.
  • Land area 325 has a cylindrical cross section, the cylindrical cross section preferably being provided by the grinding of land portion 325 by grinding surface 326 of tool 327.
  • grinding surface 326 contacts land area 325. Because grinding surface 326 extends in generally parallel relation to the longitudinal axis 301 of barrel 300, land surface 325 has a cylindrical shape. It should be understood that grinding surface 326 is rotated as shown by arrow A about the longitudinal axis of the grinding tool.
  • the entire grinding tool 327 is rotated as shown by arrow B about point 315. After at least one complete rotation of the entire grinding tool, a cylindrical land surface 325 is provided. During grinding the barrel remains stationary. The tool is then withdrawn to the left from the position shown in FIGURE 19A.
  • the barrel In order to machine front 302 of the barrel, the barrel is tilted with respect to grinding surface 326.
  • the barrel is tilted about a line which is perpendicular to both axis 301 and axis 314 and which intersects point 315.
  • FIGURE 19B grossly exaggerate the tilt of axis 301 with respect to grinding surface 326 in order to explain the method of grinding the barrel.
  • the tilt angle, 0 is preferably 1 degree, 3 minutes.
  • the grinding surface and the grinding tool are rotated as shown by arrows A and B to grind away a portion of land surface 325 to provide surfaces 317 and 318.
  • Surfaces 319 and 320 remain cylindrical with respect to longitudinal axis 301. It should be understood that the portion of land area between transverse axis 314 and land areas 317 and 318 is extremely small, and when 0 equals 1 degree, 3 minutes, the surface area of these portions is negligible. It is only with the exaggerated view shown in FIGURE 19B that these areas appear significantly large.
  • the method of machining the barrel is particularly simple and provides for precision machining of the barrel.
  • the barrel 300 is stationary. Since tool 327 may be rotated about arrow B with great precision, a barrel having precise dimensions is provided.
  • Axis 301 of barrel is now in a horizontal position.
  • annular protrusion 306 disengages recess 307 and protrusion 308 disengages recess 309-to allow the slide to recoil further toward the rear of the gun to a position shown in FIGURE 18.
  • FIGURE 18 shows the gun in a position subsequent to the firing of the gun. More particularly, as shown in FIGURE 18, the barrel 300, the bushing 303 and the slide have recoiled under the detonation force of the cartridge. The rear end of barrel 300 has been cammed downwardly and out of engagement with the slide of the gun and the slide has recoiled a slight distance further.
  • a drive spring in the slide assembly forces the barrel 300, the slide and bushing forward.
  • the rear of camming surface 313 contacts pin 211 and forces the barrel 300 to pivot upwardly to a position wherein annular protrusion 306 is located within recess 307 and annular protrusion 308 is located within recess 309.
  • surfaces 319 and 320 which are cylindrical with respect to longitudinal axis 301 of barrel 300, disengage the cylindrical interior wall of bushing 303.
  • surfaces 317 and 318 which are angled with respect to the longitudinal axis 301 of barrel 300, engage the interior cylindrical wall of bushing 303.
  • the barrel locating structure returns to the firing position shown in FIGURE 17.
  • FIGURES 17, 18 and 19b it should be understood that the magnitude of machining angle, 0, is dependent on numerous factors such as the length of the barrel and the position of the barrel engagement means on the interior of the slide. For a relatively long barrel, 0 would be decreased and for a relatively short barrel, 0 would be increased. Thus, the magnitude of 0 will vary depending on the design of a particular gun.
  • the safety mechanism for the firing pin and the hammer will be described with respect to FIGURES 20 and 21.
  • FIGURE 20 shows the safety mechanism in the locked position wherein the safety pin is prevented from moving forward to strike the cartridge and the hammer is prevented from striking the firing pin.
  • FIGURE 21 shows the safety mechanism in the position wherein the hammer has struck the firing pin and the firing pin has moved forward to strike and detonate.
  • hammer 100 is pivotal about first major rear axis 101.
  • Hammer 100 includes an abutment 102 which protrudes from one side of the hammer at a position intermediate the strike surface 103 and the pivot 101.
  • the firing pin may be of the type described hereinafter in the application or the firing pin may be of a conventional type which includes a main body 104 and a cartridge striking pin 105.
  • the main body or rear of the firing pin 104 includes at the bottom thereof an aperture 106 which defines a stop surface 107.
  • Firing pin safety lever 108 has a generally elongated shape and is pivotal at one end 109 about pin 110, pin 110 being mounted in the slide assembly of the gun.
  • Firing pin safety lever 108 is urged or biased downwardly by spring 111.
  • Spring 111 is positioned within a dead hole 149 in the slide.
  • Lever 108 also includes an end portion 112 which is received by aperture 106 and which contacts stop surface 107 to prevent forward movement of the firing pin 104 when end portion 112 of lever 108 is engaged in aperture 106.
  • Hammer safety block 113 includes a generally elongated body 114 having one end defining a camming surface 115 which contacts end 112 of lever 108.
  • the other end 116 of hammer safety block 113 includes a camming pin 117 protruding from one side thereof.
  • the hammer safety block 113 includes an elongated guide hole 118 which receives major rear axis 119 of the g un.
  • Block 113 also includes a spring retaining hole 148.
  • Biasing spring 120 is postioned within hole 148 and between axis 119 and spring retaining pin 147. The function of spring 120 is to urge the hammer safety block 113 upwardly to thereby urge lever 108 into aperture 106 of firing pin 104.
  • spring 120 is stronger in biasing effect than spring 111, so that the force of spring 120 overcomes the force of spring 111.
  • Protruding from the side of hammer safety block 113 adjacent hammer 100 is an abutment 121 which prevents hammer 100 from striking the firing pin.
  • the mechanism for moving the hammer safety block 113 downwardly will not be described.
  • the hammer safety block actuator or bird 122 includes elongated camming surface 123 which engages camming pin 117 to provide for downward movement of hammer safety block 113.
  • Camming surface 123 is positioned on one end of actuator 122, the other end 124 of actuator 122 providing a surface 125 which abuts a portion of the frame assembly 126 to thereby prevent rotation of the actuator 122 any further than the position shown in FIGURE 20.
  • Actuator 122 is pivotal about third major rear axis 127, axis 127 being mounted in the frame assembly of the gun.
  • the firing pin and hammer safety mechanism functions as follows. In the position shown in FIGURE 20, the pin 104 and the hammer 103 are in the rest position and forward movement of the firing pin and the contracting of the firing pin 104 by hammer 100 is prevented. In order to move safety block 114 downwardly, actuator 112 must be rotated counter- clockwise. This is provided for by a camming abutment and the double action bar being deleted from FIGURE 1 for simplicity. However, it should be understood that as the trigger of the gun is pulled towards the firing position, a cam abuts actuator at camming surface 128 to move the actuator 122 in a counterclockwise direction. The rotation of actuator 122 is described with respect to FIGURES 6-9.
  • Pin 117 is forced downwardly by actuator 122 and slides with.respect to camming surface 123 to thereby move the hammer safety block 113 downwardly toward the position shown in FIGURE 21.
  • Hammer safety block 113 includes at one side thereof, a flat surface 146. Surface 146 abuts and slides with respect to wall 157.
  • the hammer moves forward and abutment 102 of hammer 103 moves past abutment 121 of hammer safety block 113. thereby allowing strike surface 103 to contact firing pin 104.
  • end of lever 1 0 8 is urged out of aperture 106 by spring 111.
  • the firing pin is now capable of moving forward in response to a strike by hammer 100.
  • wall 157 extends the entire height of the frame of the gun and is integral with the frame of the gun. As described with respect to FIGURES 12, 13, 14 and 15, wall 157 is the same wall that ball bearings166 of hammer actuator shoe 152 slide with respect to.
  • FIGURE 22 shows a sectional side view of the slide assembly.
  • the rear portion of the slide includes an aperture 401 which receives the manual safety 350, the manual safety being shown in FIGURES 26 and 27.
  • Slide 400 also includes an elongated firing pin chamber 402 which receives firing pin 104, the firing pin being shown in FIGURE 23.
  • Firing pin chamber 402 also receives a firing pin spring which is not shown in the drawings but which tunctions to bias the firing pin 104 away from the cartridge.
  • a firing pin safety lever chamber 403 Immediately beneath the firing pin chamber 402 is a firing pin safety lever chamber 403 which receives firing pin safety lever 108, firing pin safety lever 108 being shown in FIGURES 20 and 21.
  • Chamber 403 further includes a pin receiving aperture 404 which is adapted to receive pin 110 of the firing pin safety lever 108.
  • the slide 400 also includes an elongated rail 405 which defines an elongated slide recess 406.
  • Elongated slide recess 406 receives a slide rail 67 in the frame assembly and slide rail 67 in the frame assembly slides with respect to slide rail 405 (Slide rail 67 is shown in FIGURES 10 and 11).
  • Hammer safety block receiving recess r.eceives the upper portion of the hammer safety block 113 when the gun is in the rest position (FIGURES 20 and 21 show the hammer safety block 113). When the gun has been fired, the hammer safety block is withdrawn from recess 407.
  • Slide 400 also includes a cartridge case ejection port 408 which allows for ejection of the cartridge case from a fired cartridge.
  • Annular recesses 307 and 309 are the same recesses shown in FIGURES 17 and 18.
  • the front end of slide 400 includes an annular bushing receiving chamber 409 which receives and retains bushing 303. More specifically, annular recess 409 receives a: locking protrusion 410 which protrudes from the side of the bushing.
  • bushing 303 fits within a second annular recess 412 and protrudes a short distance from the front end of slide 400.
  • Bushing 303 includes an internal cylindrical wall 304, wall 304 being described in great detail with respect to FIGURES 17 and 18. Cylindrical internal wall 304 flares outwardly to form a conical wall 413. It should be understood that conical wall 413 provides clearance for the rear portion of the barrel when the rear portion of the barrel is tilted upwardly by a small angle.
  • Bushing 303 includes a lower ring portion 414 which is integral with the main portion of the bushing. Ring portion 414 receives a spring guide bushing 415 which is generally cylindrical in shape and includes a bushing retaining annular wall 416.
  • Bushing 415 defines an internal cylindrical wall 417.
  • Spring guide rod 418 fits within bushing 415 and is slidable in relation to wall 417.
  • Spring 419 is positioned to the exterior of bushing 415 and serves to urge spring guide rod 418 toward the rear of the gun.
  • the second end of rod 418 includes an annular spring retaining protrusion 420 which retains spring 419. Lug portion 310 of barrel 300 provides a stop surface for end portion 420 of rod 418.
  • the detonation force of the cartridge forces slide 400 toward the rear of the frame assembly.
  • Rail 405 slides with respect to rail 67 on the frame assembly.
  • the detonation force which drives slide 400 toward the rear of the gun provides sufficient force to compress spring 419.
  • spring 419 is compressed, rod 418 is driven through bushing 415 and protrudes a predetermined distance from bushing 415.
  • spring 419 is in its most compressed condition. Spring 419 urges the slide forward. As slide 400 moves forward, barrel 300 is still in a horizontal position.
  • Slide 400 reaches a point where camming surface 421 and slide 400 abut camming protrusion 422 on the rear portion of barrel 300.
  • Camming surface 421 urges the barrel upwardly so that annular recesses 307 and 309 engage the annular protrusions on the barrel.
  • Spring 419 urges the barrel 300 and the slide 400 to the firing position shown in FIGURE 17. The gun is now in a position to be fired once again.
  • the firing pin includes a body 36 having a generally elongated shape defining a first end 37 which is impacted by the hammer.
  • Body 36 includes a second end 38, end 38 providing cavity 39 which has a generally cylindrical shape.
  • the interior rear surface 49 defines an arcuately shaped seat 48.
  • Detonation pin 41 has a generally elongated shape and has a smaller cross section than body 36.
  • One end 42 of the detonation pin strikes the cartridge and a second end 43 of the firing pin is positioned within cavity 39.
  • the second end of detonation pin 41 terminates in a ball 44.
  • Ball 44 is preferably spherically shaped and seats in arcuately shape seat 49 of cavity 39.
  • Body 36 includes a hole 45 which is transverse to the longitudinal axis of the pin and which extends through the walls on either side of the cavity 39.
  • Ball 44 includes an aperture which receives pin 46, pin 46 being positioned within hole 45 and retaining detonation pin 41 within cavity 39.
  • the diameter of pin 46 is preferably smaller than the diameter of hole 45 to allow for greater machining tolerances.
  • the front surface of pin 46 preferably contacts the front interior wall of hole 45 to reduce or prevent detonation pin 41 from sliding with respect to body 36. However, detonation pin 41 is pivotal through a small angle about pin 46.
  • ball 44 is in contact with arcuately shaped seat 49.
  • end 37 of the firing pin is contacted by the hammer, the force of the hammer is transmitted to ball 44 of detonation pin 41 via seat 49. Stresses between body 36 and detonation pin 41 are accommodated by the slight pivotal movement of detonation pin 41.
  • FIGURE 24 shows a view of the right side of the gun.
  • Lock bolt 204 has been removed from the gun to expose double action bar 15. Furthermore, in the upper portion of FIGURE 19, lock bolt 204 has been turned over to expose the under side of lock bolt 204.
  • FIGURE 29 shows ejector 453 which is retained within the interior of the gun by pin 119.
  • Ejector 453 includes a cartridge ejector protrusion 456 which protrudes above the frame assembly into the slide assembly. When the gun is fired and the slide moves toward the rear of the gun, ejector protrusion 456 contacts the discharged case and ejects it from the gun through aperture 408 (aperture 408 is shown in FIGURE 22.)
  • ejector 453 includes an elongated U-shaped groove 457 which receives sear separator 354. Sear separator 354 is slidable within U -shaped groove 457. Thus, ejector 453 not only serves to eject a discharged case from the gun, but also, functions to guide sear separator 354.
  • lock bolt 204 includes an elongated recess 458, recess 458 receiving double action bar 15 and providing a clearance for double action bar 15 to move within recess 458.
  • recess 458 also serves as a safety lock for double action bar 15.
  • interior surface 459 of recess 458 engages the upper surface 460 of single action bar 15.
  • Slide stop 509 is pivotally mounted on the gun about axis 513 and includes camming surface 514. Slide stop 513 is urged downwardly by pin 515 which is mounted in a hole 516 in the single action bar cover 510. Single action bar cover 510 is secured to the frame by pin 101 and pin 516. Hole 516 includes a spring which urges pin 515 toward engagement with surface 514 on slide stop 509. Thus, in its normal position, slide stop 509 is in a horizontal position and out of engagement with slide 400.
  • the slide stop includes a protruding finger which protrudes through the frame wall into the magazine cavity.
  • a conventional magazine follower engages the protruding finger of the slide stop and urges the slide upwardly.
  • the protruding finger overcomes the bias on pin 515 and pivots slide stop 509 in a counterclockwise direction from the position shown in FIGURE 25.
  • slide stop 509 is rotated upwardly, the end 517 engages in a recess in the slide assembly.
  • FIGURE 26 shows the gun in the manual safety off position and wherein the hammer is in the cocked position.
  • FIGURE 27 shows the gun in the manual safety position wherein the hammer contacts the manual safety and is prevented from impacting the firing pin.
  • hammer 100 is in the cocked position wherein abutment 64 engages surface 61 of hammer 100.
  • FIGURES 10 and 11 and the attendant desfription may be referred to.
  • Manual safety block 350 includes a recess 351 which is aligned in the vertical direction and which accommodates the striking surface 103 of hammer 100 thereby allowing the striking surface 103 to impact the firing pin.
  • manual safety block 350 includes a recess 352 which defines a camming surface 353.
  • the manual safety also includes a sear separator 354.
  • the function of sear separator 354 is to move sear 62 from the position shown in FIGURE 26 in a counter-clockwise direction to the position shown in FIGURE 27.
  • Sear separator 354 has a generally rectangular body and is slidable in relation to pin 119.
  • Sear separator includes an elongated guide slot 355 which receives pin 119.
  • the lower end of sear separator 354 includes a camming nib 356.
  • the upper region of sear 62 includes a recess 357 defining a camming lip 358. In the position shown in FIGURE 26 sear separator 354 is biased upwardly and away from lip 358 and recess 357.
  • Manual safety 350 can be rotated by means of a manual safety rotating lever 359 (lever 359 being shown in FIGURE 2). From the position shown in FIGURE 26, manual safety 350 is rotated in a counter-clockwise direction. Before camming surface 353 contacts sear separator 354, recess 351 is rotated out of alignment with hammer 100 so that if the hammer should fall accidentally, hammer 100 will be prevented from impacting the firing pin.
  • camming surface 353 engages the upper portion of sear separator 354 and overcomes the upward bias on sear separator 354.
  • Sear separator 354 is moved downwardly to the position shown in FIGURE 27.
  • camming nib 356 engages lip 358 and forces rotation of sear 62 in a counterclockwise direction.
  • camming nib ' 356 is received by recess 357.
  • the manual safety may also be used to lock the gun when the gun is in the rest position.
  • the gun is shown in the rest position.
  • the manual safety 350 is rotated. Rotation of the manual safety will cause recess 351 to move out of alignement with hammer 100.
  • the manual safety 350 will force the hammer to rotate a small distance in a direction away from the firing pin.
  • hammer would be rotated in a counterclockwise direction a small distance so that the abutment 102 on hammer 100 no longer contacts the abutment 121 on hammer safety block 114.
  • the gun When the manual safety is in the on position as shown in FIGURE 27, the gun may be unlocked by rotating manual safety 350 in a clockwise direction. Clockwise rotation of the manual safety 350 aligns recess 351 with hammer 100 and allows the hammer to rotate a slight dis- ance in the counterclockwise direction. The hammer is prevented from impacting the firing pin because the abutment 102 on the hammer 100 is aligned and contacts the abutment 121 on the hammer safety block 114 to prevent the strike surface 103 of hammer 100 from impacting the firing pin (abutments 102 and 121 are shown in FIGURES 20, 21 and 6).
  • FIGURE 28 shows an exploded view of some of the more important parts of the frame assembly of the gun. It should be noted that only a portion of the frame of the gun has been shown so as to provide an unobstructed view of the internal parts of the gun.
  • the left wall 450 and the right wall 451 of the gun are shown schematically.
  • a space 452 is defined by wall 450 and wall 451, space 452 accommodating the internal parts of the gun.
  • axis I axis I
  • axis II axis II
  • axis III axis IV
  • wall 157 which extends between and is integral with left wall 450 and the right wall 451 of the gun. Wall 157 is best shown in FIGURE 12.
  • Walls 450 and 451 include a plurality of holes which receive pins 127, 119, 101 and 12, these pins being stationary with respect to wall 450 and wall 451 (the holes in walls 450 and 451 are not shown).
  • Pin 127 has a number of functions : pin 127 functions as an axis about which ler sear 62 rotates. Pin 127 also functions as an axis about which hammer safety block actuator 122 rotates.
  • Pin 101 functions as an axis about whcih hammer 100 rotates and also protrudes a sufficient amount from right wall 451 to provide aretaining pin for elongated hole 205 of lock bolt 204.
  • Pin 119 functions as a stop pin for sear separator 354 and as a guide pin for hammer safety block 113. Pin 119 is also retaining pin for ejector 453.
  • Pin 12 functions as an axis about which trigger 10 pivots.
  • Wall 157 also plays an important role in locating the internal parts of the gun.
  • Wall 157 provides a stop surface which prevents rotation of sear 62 more than a predetermined amount.
  • Surface 157 also maintains ejector 453 in a stationary position because it contacts wall 454 of the ejector.
  • Wall 157 also provides a slide surface for hammer safety block 113.
  • Wall 157 provides a stop surface for hammer safety block actuator 122.
  • the hammer actuator is not shown in FIGURE 28, it should be appreciated that wall 157 provides a slide surface for a ball bearings 166 of hammer actuator shoe 152.
  • the walls of the frame that is, walls 450 and 451, are the same as walls 156 of U-shaped guide 155 (Refer to FIGURES 12,13, 14, 15 and 16 for a description of the hammer actuator).
  • the gun of the present invention is particularly simple : the important internal parts of the gun may be located by axis I, axis II, axis II and axis IV, the left wall 450, the right wall 451 and the internal wall 157.

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EP81100818A 1981-02-05 1981-02-05 Halbautomatische Feuerwaffe Withdrawn EP0057733A1 (de)

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EP81100818A EP0057733A1 (de) 1981-02-05 1981-02-05 Halbautomatische Feuerwaffe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81100818A EP0057733A1 (de) 1981-02-05 1981-02-05 Halbautomatische Feuerwaffe

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EP0057733A1 true EP0057733A1 (de) 1982-08-18

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143114A1 (de) * 1983-11-28 1985-06-05 Paul S. Giragosian Aus Hammer und Hammersicherung bestehende Baueinheit für Feuerwaffen
US4536981A (en) * 1982-09-24 1985-08-27 Giragosian Paul S Firearm assembly
EP0186703A1 (de) * 1984-06-25 1986-07-09 Sturm Ruger & Co Schlagbolzensicherung für pistolen.
EP0192343A2 (de) * 1985-02-04 1986-08-27 Victory Arms Co. Limited Abzugsmechanismussicherung für eine halbautomatische Feuerwaffe
EP0540778A1 (de) * 1991-11-08 1993-05-12 ITM INDUSTRIAL TECHNOLOGY & MACHINES AG Abzugsvorrichtung für Handfeuerwaffen
EP0550238A1 (de) * 1991-12-30 1993-07-07 Taas - Israel Industries Ltd. Spannabzug-Pistole mit verbessertem Abfeuerungsmechanismus
BE1009537A3 (fr) * 1995-08-22 1997-05-06 Fn Herstal Sa Arme a feu comprenant un canon centre dans une glissiere.
CN112276865A (zh) * 2020-10-19 2021-01-29 南京腾亚精工科技股份有限公司 一种轴向射钉枪击发器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB673028A (en) * 1948-12-23 1952-05-28 Sig Schweiz Industrieges Automatic smallarms
US3158064A (en) * 1962-01-23 1964-11-24 Smith And Wesson Inc Firearm with a pivotable barrel having a spherical hump engaging a slide member
US3207037A (en) * 1964-01-20 1965-09-21 Pachmayr Gun Works Pistol barrel mounting structure
US3504594A (en) * 1968-05-23 1970-04-07 Thomas A Greeley Sub-caliber,self-reloading firearm with barrel position adjusting means
US3564967A (en) * 1968-09-09 1971-02-23 Colt S Inc Pistol barrel positioning means
FR2158885A5 (de) * 1971-10-26 1973-06-15 Colt Ind Operating Corp

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB673028A (en) * 1948-12-23 1952-05-28 Sig Schweiz Industrieges Automatic smallarms
US3158064A (en) * 1962-01-23 1964-11-24 Smith And Wesson Inc Firearm with a pivotable barrel having a spherical hump engaging a slide member
US3207037A (en) * 1964-01-20 1965-09-21 Pachmayr Gun Works Pistol barrel mounting structure
US3504594A (en) * 1968-05-23 1970-04-07 Thomas A Greeley Sub-caliber,self-reloading firearm with barrel position adjusting means
US3564967A (en) * 1968-09-09 1971-02-23 Colt S Inc Pistol barrel positioning means
FR2158885A5 (de) * 1971-10-26 1973-06-15 Colt Ind Operating Corp

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536981A (en) * 1982-09-24 1985-08-27 Giragosian Paul S Firearm assembly
EP0143114A1 (de) * 1983-11-28 1985-06-05 Paul S. Giragosian Aus Hammer und Hammersicherung bestehende Baueinheit für Feuerwaffen
EP0186703A1 (de) * 1984-06-25 1986-07-09 Sturm Ruger & Co Schlagbolzensicherung für pistolen.
EP0186703A4 (de) * 1984-06-25 1987-10-05 Sturm Ruger & Co Schlagbolzensicherung für pistolen.
EP0192343A2 (de) * 1985-02-04 1986-08-27 Victory Arms Co. Limited Abzugsmechanismussicherung für eine halbautomatische Feuerwaffe
EP0192343A3 (de) * 1985-02-04 1987-05-20 Victory Arms Co. Limited Abzugsmechanismussicherung für eine halbautomatische Feuerwaffe
EP0540778A1 (de) * 1991-11-08 1993-05-12 ITM INDUSTRIAL TECHNOLOGY & MACHINES AG Abzugsvorrichtung für Handfeuerwaffen
EP0550238A1 (de) * 1991-12-30 1993-07-07 Taas - Israel Industries Ltd. Spannabzug-Pistole mit verbessertem Abfeuerungsmechanismus
BE1009537A3 (fr) * 1995-08-22 1997-05-06 Fn Herstal Sa Arme a feu comprenant un canon centre dans une glissiere.
CN112276865A (zh) * 2020-10-19 2021-01-29 南京腾亚精工科技股份有限公司 一种轴向射钉枪击发器
CN112276865B (zh) * 2020-10-19 2024-06-04 南京腾亚精工科技股份有限公司 一种轴向射钉枪击发器

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