Cartridge casing extraction mechanism for revolvers |
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| 申请号 | US41460773 | 申请日 | 1973-11-08 | 公开(公告)号 | US3874104A | 公开(公告)日 | 1975-04-01 |
| 申请人 | BANGOR PUNTA OPERATIONS INC; | 发明人 | SIBLEY HAROLD E; | ||||
| 摘要 | Disclosed is a revolver including a frame having an opening and a barrel. A yoke pivotally carried by the frame, in turn, pivotally carries a cylinder for movement therewith between positions within the frame opening and to one side of the frame. The cylinder carries an extractor biased forwardly by a spring for retention adjacent the rear face of the cylinder. The cylinder also carries a centerpin biased rearwardly by a spring to provide a locking projection at its rear end for engagement in an aperture in the breech face of the revolver frame. The forward end of the centerpin carries a cylinder extractor thumbpiece and an extractor rod, connected to the extractor, encompasses the centerpin forwardly on the cylinder. When the cylinder lies within the frame opening, the extractor rod lies within a channel formed on the side of the barrel. The forward end face of the channel is undercut to provide a recess. The rear face of the extractor thumbpiece is counterbored and the thumbpiece is releasably locked within said recess. To release the cylinder and operate the extractor, the centerpin is axially displaced in a forward direction by a thumbpiece on the side of the frame to release the rear locking projection of the centerpin and the extractor thumbpiece from the barrel enabling the cylinder to swing out from the frame opening. Movement of the extractor thumbpiece rearwardly displaces the extractor from the cylinder and extracts cartridges from the chambers of the cylinder. When the cylinder is moved into the frame opening after loading and into its firing position, the centerpin is cammed forwardly to align the extractor thumbpiece with the end face of the channel and the rear locking projection with the locking aperture in the frame whereupon the centerpin is displaced rearwardly by its spring to lock the centerpin at both its front and rear ends. | ||||||
| 权利要求 | 1. A revolver comprising; a frame having an opening and a barrel, a yoke pivotally carried by said frame, a cylinder pivotally carried by said yoke and pivotal with said yoke between a firing position locating said cylinder within said frame opening and a cartridge casing extraction and loading position to one side of said frame, a centerpin carried by said cylinder and mounted for axial sliding movement between first and second positions, means biasing said centerpin for axial movement into said first position, means carried by said frame for locking a rear end portion of said centerpin to said frame when said cylinder lies in said firing position and said centerpin lies in said first position and for releasing the rear end portion of said centerpin from said frame when said centerpin is axially displaced from said first position into said second position, a cartridge casing extractor carried by said cylinder for axial movement in a direction generally parallel to the rotational axis of said cylinder, an extractor thumbpiece carried by a forward end portion of said centerpin, said thumbpiece being recessed along its rear face to define an arcuate rearwardly projecting flange, a channel mounted below said barrel, said channel having an arcuate recess substantially surrounding a foward end portion of said channel for receiving the thumbpiece flange and for locking said thumbpiece to said barrel and for releasing the forward end portion from said barrel when said centerpin is axially displaced from said first position into said second position, said centerpin in said second position thereof unlocking said cylinder from said frame and enabling said cylinder to swing from said frame opening to said one frame side, and means coupling said extractor thumbpiece and said extractor to enable displacement of said extractor axially away from said cylinder when said cylinder is located on said one frame side for complete extraction of cartridge casings from said cylinder. 2. A revolver according to claim 1 wherein said revolver has a barrel length of about two and one-half inches, said coupling means enabling displacement of said extractor a distance from said cylinder sufficient to fully extract the cartridge casings from said cylinder. 3. A revolver according to claim 1 wherein the latter locking means includes means responsive to axial movement of said centerpin from said second position to said first position for locking said thumbpiece to said barrel. 4. A revolver according to claim 3 wherein said centerpin normally lies in said first position when said cylinder lies to said one frame side, means carried by said revolver for axially displacing said centerpin from said first position to said second position in response to swinging movement of said cylinder from said one frame side toward said firing position. 5. A revolver according to claim 1 wherein the latter locking means includes an axially forwardly opening recess and an abutment formed on said barrel, and means responsive to axial movement of said centerpin from said second position to said first position for locating at least a portion of said thumbpiece in said recess and in lateral alignment with said abutment to preclude swinging movement of said centerpin and said cylinder from the cylinder firing position toward said one frame side. 6. A revolver according to claim 1 wherein said centerpin is carried by said cylinder for axial sliding movement relative to said extractor for movements thereof between said first and second positions and for joint axial movement with said extractor relative to said cylinder. 7. A revolver according to claim 6 wherein said extractor includes a stem having a central passage for receiving said centerpin and an internal shoulder within said passage, a flange carried by said centerpin for engagement with said shoulder when said centerpin lies in said first position, said cylinder having a central bore receiving said stem and said centerpin, a spring engageable between said cylinder and said stem for biasing said extractor for movement in a forward direction, said stem and said centerpin being jointly movable rearwardly relative to said cylinder against the bias of said spring. 8. A revolver according to claim 7 including an extractor rod having an axial passage therethrough for receiving said centerpin, said centerpin being axially movable relative to said extractor rod during movement of said centerpin betweeen said first and second position, said extractor rod being secured to said stem for joint movement with said extractor. 9. A revolver comprising; a frame having an opening and a barrel, a yoke pivotally carried by said frame, a cylinder pivotally carried by said yoke and pivotal with said yoke between a firing position locating said cylinder within said frame opening and a cartridge casing extraction and loading position to one side of said frame, a centerpin carried by said cylinder and mounted for axial sliding movement between first and second positions, means biasing said centerpin for axial movement into said first position, means carried by said frame for locking a rear end portion of said centerpin to said frame when said cylinder lies in said firing position and said centerpin lies in said first position and for releasing the rear end portion of said centerpin from said frame when said centerpin is axially displaced from said first position into said second position, a cartridge casing extractor carried by said cylinder for axial movement in a direction generally parallel to the rotational axis of said cylinder, said frame having a channel below the barrel opening laterally to said one frame side, the forward end face of the portion of said channel having an arcuate recess substantially surrounding a forward end portion of said channel, an extractor thumbpiece carried by a forward end portion of said centerpin, said thumpiece being recessed along its rear face to define an arcuate axially rearwardly projecting flange for reception in said recess for locking said thumbpiece to said channel and for releasing the forward end portion from said barrel when said centerpin is axially displaced from said first position into said second position, said centerpin in said second position thereof unlocking said cylinder from said frame and enabling said cylinder to swing from said frame opening to said one frame side, said centerpin normally lying in said first position when said cylinder lies to said one frame side, means carried by said revolver for axially displacing said centerpin from said first position toward said second position in response to swinging movement of said cylinder toward said firing position to locate said flange forwardly of said end face, said centerpin biasing means displacing said centerpin from said second position to said first position when said cylinder swings into said firing position with said centerpin lying in said channel to engage said flange in said recess thereby to lock said thumbpiece to said barrel and means coupling said extractor thuMbpiece and said extractor to enable displacement of said extractor axially away from said cylinder when said cylinder is located on said one frame side for complete extraction of cartridge casings from said cylinder. 10. A revolver comprising; a frame having an opening and a barrel, a yoke pivotally carried by said frame, a cylinder pivotally carried by said yoke and pivotal with said yoke between a firing position locating said cylinder within said frame opening and a cartridge casing extraction and loading position to one side of said frame, a centerpin carried by said cylinder and mounted for axial sliding movement between first and second positions, means biasing said centerpin for axial movement into said first position, means carried by said frame for locking a rear end portion of said centerpin to said frame when said cylinder lies in said firing position and said centerpin lies in said first position and for releasing the rear end portion of said centerpin from said frame when said centerpin is axially displaced from said first position into said second position, a cartridge casing extractor carried by said cylinder for axial movement in a direction generally parallel to the rotational axis of said cylinder, said barrel having a channel laterally to said one frame side, the forward end face of the portion of said channel having an arcuate recess substantially surrounding a forward end portion of said channel, an extractor thumbpiece carried by a forward end portion of said centerpin, said thumbpiece being recessed along its rear face to define an arcuate axially rearwardly projecting flange for reception in said recess for locking said thumbpiece to said barrel and for releasing the forward end portion from said barrel when said centerpin is axially displaced from said first position into said second position, said centerpin in said second position thereof unlocking said cylinder from said frame and enabling said cylinder to swing from said frame opening to said one frame side, the first mentioned locking means including means for displacing said centerpin from said first position to said second position when said cylinder lies in said firing position to locate said flange forwardly of said end face thereby enabling lateral swinging movement of said thumbpiece from said barrel and means coupling said extractor thumbpiece and said extractor to enable displacement of said extractor axially away from said cylinder when said cylinder is located on said one frame side for complete extraction of cartridge casings from said cylinder. |
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