Abstract: A safety for a firearm includes a blocking member that has a relieved portion adjacent to a relieved portion of a firing pin of the firearm. The blocking member is movable between a safe position wherein the relieved portions are not in registration and a fire position wherein the relieved portions are in registration. The blocking member moves from the safe to the fire position in response to a pull of the firearm's trigger. Movement of the blocking member is rotational in response to a pawl as would also be used to rotate the cylinder of a revolver.

Abstract: A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame via a yoke, and a cylinder retaining mechanism is provided. The cylinder retaining mechanism includes multiple assemblies, which lock the yoke in the cylinder-closed position, including: (1) an extractor, a locking bolt and a locking bolt retainer that house an extractor rod spring and engage a ratchet hub driver, hub drive center pin and central pin plate that house a ratchet drive spring; (2) a star-shaped configuration of grooves and ridges on the extractor and the ratchet hub driver, respectively; (3) a rear taper of the locking bolt that engages a concave recess at the axial center of the rounded groove of the locking bolt recess; and (4) an annular ring that engages an inner wall of an annular opening in a breach face of the frame.

Abstract: A rotary clip rotation mechanism for an air gun, having a nail for engaging with a nail engagement section provided in the rotary clip and causing rotation of a rotary clip, comprises an L-shaped arm, capable of rotating about an arm shaft, with a muzzle side end opening section formed from a curved surface section; an arm elastic section provided at a position contacting the tip of the curved surface section of the L-shaped arm, a nail support arm provided so as to rotate on a gun rear end side of the L-shaped arm by means of a connecting elastic section, and a nail urged in the direction of the tip end by a nail elastic section provided on a tip of the nail support arm.

Abstract: A safety device for a revolver including an assembly adapted to be affixed to the revolver on opposite sides of the trigger guard, and a cylinder block connected to the assembly having a rigid leg for extending into a chamber to secure the revolver. The cylinder block includes a base having an aperture and a bent portion disposed between the aperture and the base. One or more pins extend from at least one of the side members for extending through the aperture for attaching the cylinder block to the assembly.

Abstract: A cylinder retaining mechanism for a firearm includes a frame having a firing bore and a cylinder having a longitudinal bore. A yoke is pivotally connected to the frame and is operatively connected to the cylinder for selectively pivoting the cylinder between a first position in which the longitudinal bore is aligned with the firing bore, and a second position in which the longitudinal bore is not aligned with the firing bore. A biasing mechanism is housed in the frame and has an engaging portion which is selectively accommodated within an engaging cavity formed in the yoke when the cylinder is in the first position.

Abstract: A mechanism for indexing the movement of a firearm cylinder to load and unload cartridges from a plurality of cartridge-receiving chambers in the cylinder. The firearm may generally comprise a cylinder, a supporting structure rotatably carrying the cylinder and a loading gate cutout. The indexing mechanism may comprise a cylinder indexing member, which in one embodiment may be a stop pin. The cylinder is configured to be stoppingly engaged by the indexing member when the cylinder is rotated in a first direction to align a cartridge-receiving chamber with the loading gate cutout in the frame, thereby creating an indexed position of the cylinder. Preferably, a plurality of indexed positions are created to allow each chamber to be aligned with the loading gate cutout for loading and unloading cartridges. In one embodiment, the cylinder is further freely rotatable in a second direction opposite the first direction without stopping engagement between the cylinder and indexing member.

Abstract: An adjustable sectioned water flow guide stationarily mounted in the water box of an underwater pelletizer to adjust the flow of pressurized water through the water box in order to accommodate a range of variable process requirements, such as pellet size, water flow, water temperature, melt flow, etc., while preventing pellet distortion and die hole freezing. The length and surface configuration of the water flow guide may be readily adapted through selection of an appropriate number of grooved or ungrooved sections to optimize fluid flow for particular pelletizer applications.

Abstract: A revolver is provided that includes a frame, a barrel, a cylinder, a hammer, a trigger, and a safety lock mechanism. The safety lock mechanism includes a lockarm and a lockarm actuator. The hammer includes a normal slot and a lock slot. The lockarm includes a cam surface and hammer post, and is pivotally mounted relative to the frame. The lockarm actuator is disposed in the frame. The lockarm actuator includes a head and a cam, and the cam is aligned with the cam surface of the lockarm so as to be engageable with the cam surface. The lockarm actuator can be positioned in a safety-off condition in which the hammer post of the lockarm is received within the normal slot of the hammer and the hammer is operable. The lockarm actuator can also be positioned in a safety-on condition in which the hammer post is received within the lock slot and the hammer is inoperable.

Abstract: In a revolving firearm having a barrel and a rotating cartridge cylinder actuated by an axially slidable pump-action type foregrip, indexing means are provided for converting the back and forth movement of the foregrip into a stepwise rotational movement of the cartridge cylinder for bringing one chamber of the cartridge cylinder after another in axial alignment with the barrel.

Abstract: A revolver-lock device including a positive means, for locking of the bullet cylinder, a lock-housing for containing lock mechanism components, an extension rod, an inner permanent magnet, an extension spring, a multiple number of balls or similar members, a housing sealing disc, an external magnet key with slot, means for preventing retraction of the locking expansion balls from the cylinder walls, for preventing insertion of bullets into the cylinder holes, and for preventing the cylinder from rotating, and thus operation of the trigger, hammer and firing pin, means for restricting the bullet firing caps to be off-line with the firing pin, means for preventing the revolver cylinder from being opened for loading, a method for high volume, low cost production due to simplicity of design, a quick activating/deactivating means for fast use of the revolver, a compact size and shape which allows easy casing of the revolver, a parts interchanging feature for similar revolvers of the same caliber and for different

Abstract: A gun includes a pivoting barrel assembly, a trigger/hammer double action firing mechanism, and a barrel/inline valve mechanism for firing projectiles. The pivoting barrel assembly includes a projectile-holding rotatable cylinder and an indexing mechanism for rotating the cylinder when the trigger is pulled. A hammer is cocked by a hammer link which is operatively connected to the trigger, and a cam on the hammer lifts the hammer link out of engagement with the hammer when the hammer reaches its cocked position. The valve mechanism includes a valve stem which is slidably mounted in a valve body. A pin portion on the valve stem extends through a valve seal and a valve seal retainer, and the valve seal retainer is retained in the valve body by retainer pins which extend through the body into a groove in the valve seal retainer. A detent housing is connected to the valve body, and a detent is slidably mounted with the detent housing. The detent is engageable with projectile chambers in the cylinder.

Abstract: A safety mechanism for use with a firearm having a hammer wherein the hammer has an elongated, vertically extending recess formed therein, a transfer bar traveling within that elongated recess between an extended position and a retracted position. When the transfer bar is in the extended position, the bar is interposed between the hammer and the firing pin allowing discharge of a cartridge within the chamber. When the transfer bar is in the retracted position, a portion of the recess is exposed. The exposed recess is larger than the portion of the firing pin which protrudes from the receiver. Thus, inadvertent firing is prevented as the hammer cannot contact the firing pin. A transfer bar carrier pin located on the hand assembly initially cooperates with the trigger cam and the transfer bar to elevate the bar into the extended position.

Abstract: A firearm is disclosed comprising a frame, a firing mechanism mounted on the frame, and a barrel mounted on the frame having a longitudinal axis aligned with the firing mechanism. A drum magazine is mounted for rotation about a central axis on the frame, the magazine having a plurality of circumferentially spaced cartridge chambers, each chamber being positioned so that when rotated into an appropriate position it registers with the firing mechanism and the barrel. A shroud is circumferentially mounted over the barrel and is rotatable with respect thereto. An indexing means is operable by means of a to-and-fro relative rotation between the shroud and the frame, to rotate the drum magazine from a fire position which a said cartridge chamber registers with the firing mechanism to a next succeeding fire position in which a next succeeding cartridge chamber registers with the firing mechanism.

Abstract: A gas seal revolver which includes a barrel having a longitudinal bore therethrough, a rotatably mounted cylinder positioned adjacent to the barrel and having a plurality of chambers therein, and a sealing and aligning structure oriented between the barrel and the cylinder to thereby form a leak resistant gas seal when the barrel is moved against the end face of the cylinder. The barrel and cylinder assembly are movable mounted to the frame such that the revolver may be tipped open for easy loading and cleaning of the operative parts contained therein. The revolver also includes an indexing mechanism which cooperates with notches along the outer periphery of the cylinder in order to incrementally move the cylinder so that the chambers are moved into and out of preliminary alignment with the barrel bore. The barrel is also prevented from being opened during any phase of trigger motion thereby ensuring that the operator will not open the barrel during the firing cycle.

Abstract: A light weight readily adaptable plastic device to stop rotation of the cylinder of a revolver is presented having an arcuate pawl which contacts the gun frame as rotation of the cylinder is attempted, for example, by pulling the trigger. The device includes a semi-hexagonally shaped pawl with a pair of depending cylinder studs which will engage two of the shell chambers in a gun cylinder and which will allow shells to occupy the remaining chambers.

Abstract: A firearm has an external hammer that is manually cocked in order to rotate the trigger to its ready-to-fire position. The hammer has an elongated vertically extending recess formed therein, such that when the hammer is adjacent the firing pin, an end portion of the recess is juxtaposed to the firing pin, and the hammer does not engage the firing pin. An elongated safety member is disposed within the recess and movable between retracted and extended positions, the extended position being such that the hammer may drive the safety member into engagement with the firing pin, and the retracted position being such that the safety member cannot engage the end of the firing pin but may lodge beneath its under side. A cam carried by the trigger cooperates with the hammer for controlling the position of the safety member. During firing the safety member swings with the hammer, and the firing pin is actuated by the combined kinetic energies of both.

Abstract: A revolver having essentially conventional cylinder, trigger, and cylinder pawl is provided with a novel and positive acting cylinder latch arrangement wherein the trigger has a trigger pivot portion formed with a transverse pivot hole and with a longitudinally extending actuator receiving slot through which the trigger pivot pin extends, a cylinder latch actuator is slidably mounted within said actuator receiving slot and on said trigger pivot pin for limited longitudinal and rotational movement on said pin within said slot, and a cylinder latch is pivotably mounted for rotation of the nose portion thereof into and out of engagement with the cylinder latch notches formed in the outer surface of the cylinder.

Abstract: Improved cylinder locking means for a small, single action revolver which is positioned entirely within the body of the revolver and operates with the hammer and hand to release the cylinder during cocking of the hammer and to lock the cylinder against turning during firing of the revolver and when the hammer is in a forward position. A spring biased latch member is pivotally connected between its ends to the frame of the revolver so that one end of the latch is positioned adjacent to the lower side of the cylinder and is adapted to make releasable engagement with the cylinder. The other end of the latch is positioned close to one of the sides of the hammer. An actuating member projects from the hammer or hand and is adapted to strike the underside of the end of the latch during the initial cocking movement of the hammer and pivot the latch to release the cylinder for rotation.

Abstract: A firearm that is preferably a revolver has an improved gain bolt construction, particularly for use in larger caliber weapons such as a 44 Magnum revolver. The gain bolt design indirectly assists the hand in particular in the final indexing of the cylinder. The revolver comprises a frame, a hand grip, a trigger, a hammer, a cylinder, and a hand arrangement for operating the cylinder. The trigger is pivotally supported in the frame and has a front flange for operating the bolt which is selectively moveable upon operation of the trigger to permit rotation of the cylinder and lock the cylinder in predetermined positions. The bolt is supported in a compartment forward of the trigger. The bolt includes a forward pivot end, a rear end engaged by a flange of the trigger, and a top lug which is adapted to be selectively locked with a slot in the cylinder in predetermined positions of the cylinder.

Abstract: A cylinder lock for a cartridge cylinder of a revolver in which an actuator is mounted on the trigger in such a way that when the trigger is pulled, the cylinder lock is retracted from locking engagement with the cylinder by means of a toggle action, thereby providing great mechanical advantage in overcoming a heavy cylinder-lock spring which holds the lock in engagement with the cylinder. The actuator is also arranged so that the cylinder-lock spring is not compressed during the return stroke of the trigger.

Abstract: A double action revolver has a frame on which is mounted a cylinder, a trigger and a hammer. A hammer or main spring is interposed between the trigger and hammer such that pulling the trigger causes the spring to compress and bias the hammer toward its fired position. The position of the hammer remains essentially unchanged during initial trigger pull by virtue of a toggle spring device interposed between the frame and the hammer. When the hammer spring is sufficiently compressed, a surface on the trigger contacts and engenders a deflection or buckling of the toggle spring device. Buckling of the toggle spring device permits the hammer spring to drive the hammer to the fired position in which a cartridge is fired.A spring loaded cylinder stop, having a projection adapted to be received in a locking recess on the cylinder, is adapted to be displaced forwardly, against the bias of its spring load during initial trigger return from the pulled position to its normal or released position.

Abstract: A single action revolver having an oscillating arm trippet retained in the hammer cavity which interacts with the cylinder latch to rotate the cylinder in battery position or in the alternative allow the firing pin to be positioned in a cylinder notch in the cylinder web between the cylinder chambers thereby locking the cylinder in a safety or non-battery position.

Abstract: A cylinder lock for a revolver adapted to be positioned entirely within the body of the revolver to release the cylinder during cocking of the revolver hammer and to lock the cylinder against turning during firing of the revolver and when the hammer is in a forward position. A locking bar has a cylinder engaging lug on one end and is pivotally connected adjacent its other end to the frame handle of the revolver. A spring loaded pin carried by the hammer moves the locking bar such that the lug is moved out of a notch provided therefor in the cylinder to allow rotation of the cylinder and the pin is then moved into an enlarged notch on the locking bar and is cammed into the hammer to allow the lug of the bar to be biased by a spring at the other end of the bar into position in a new notch of the cylinder. After the trigger is pulled the pin is biased from the hammer to again be in position to move the locking bar.

Abstract: A revolver in which the cylinder is indexed by the cylinder-indexing hand to a position just before the next chamber is in full alignment with the barrel where the corresponding cylinder notch partially overlaps the cylinder lock. The cylinder lock is provided with a cam-surface on its cylinder-engaging portion that engages the leading edge of the notch for camming the cylinder the rest of the way into its fully indexed position.