US 2013 0055611A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2013/0055611 A1 Blazek (43) Pub. Date: Mar. 7, 2013

(54) DEVICE FOR STRIPPING CARTRIDGES (52) U.S. Cl...... 42/SO (76) Inventor: Timothy V. Blazek, Guilford, CT (US) (57) ABSTRACT Applicant has disclosed a method and apparatus to enhance feeding cartridges into the receiver of a bolt-action repeatin (21) Appl. No.: 13/457,757 rifle, E. a SAS magazine. In the preferred E. ment, Applicants invention strips the cartridges from the (22) Filed: Apr. 27, 2012 magazines and feeds the cartridges into the chamber by a spring-activated hinged flap, pinned in a mating recess in a Related U.S. Application Data breech bolt head, adjacent a well opening and the inserted magazine. The flap is biased by a spring, which tends to lower (60) Provisional application No. 61/517,885, filed on Apr. the flap away from the breech bolt head, when the breech bolt 27, 2011. is in a retracted position. As the breechbolt is pushed forward, the flap engages a rim of the next cartridge to be fed from the Publication Classification magazine and pushes the cartridge out of the magazine, over a feed ramp of the magazine, towards the rifle's chamber. The (51) Int. Cl. flap raises, against Spring pressure, as it contacts a feed ramp F4 LA 9/24 (2006.01) of the receiver, allowing the breech bolt to enter the locking F4 LA 9/64 (2006.01) area of the receiver.

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Patent Application Publication Mar. 7, 2013 Sheet 2 of 3 US 2013/0055611 A1

Patent Application Publication Mar. 7, 2013 Sheet 3 of 3 US 2013/0055611 A1

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F.C.. 6 US 2013/0055611 A1 Mar. 7, 2013

DEVICE FOR STRIPPING CARTRIDGES 0010 Prior to use, a firearm magazine must be loaded, charged, or filled with rounds. When a magazine is being RELATED APPLICATION loaded, it is necessary to depress all previously loaded rounds 0001. This application claims priority to U.S. Provisional to provide vacant space below the lips so an additional round Patent Application Ser. No. 61/517,885, filed Apr. 27, 2011. can be inserted or loaded into this space. Each time another Applicant claims priority from that application. Applicant round is loaded the spring is further compressed, requiring also incorporates by reference that application in its entirety. more insertion force. 0011 When a magazine is fully loaded, the spring is fully FIELD OF INVENTION compressed and exerts maximum upward force against the follower and rounds towards the lips. Sometimes though a 0002 This invention relates generally to bolt action rifles. spring is weakened. That can hinder Stripping the rounds. More specifically, it relates to devices for stripping cartridges 0012. Accordingly, it is a primary object of the present from detachable magazines into a bolt-action repeating rifle. invention to provide a mechanical device to help strip a car tridge off a detachable magazine. BACKGROUND OF INVENTION 0013. It is another object to provide a cartridge stripper, 0003 Cartridges (also known as rounds) for firearms are attached to the breech bolt head, which cooperates with exist elongated. A typical cartridge includes a shellcasing, made of ing magazines. brass, which is filled with an explosive propellant. At its rear 0014. It is another object to provide a cartridge stripper, or closed end, the casing has a rim or flange containing a commensurate with the above-listed objects, which has few primer. Next to the rim is an extractor groove, an annular moving parts and is durable to use. groove machined into the casing which provides agrip for the guns extractor to pull the fired or unfired casing from the SUMMARY OF INVENTION chamber of the firearm. The front and opposite end of the 00.15 Applicant has disclosed a method and apparatus casing is open. A bullet, projectile, or head, usually of lead (nicknamed the "Cartridge Pusher') to enhance stripping car (optionally jacketed) is partially inserted into the open or tridges from a detachable magazine and feeding them into the front end of the case by crimping the casing onto the bullet. chamber of a bolt-action repeating rifle. In the preferred 0004 Some rifles have internally fixed magazines for “apparatus' embodiment, the Cartridge Pusher comprises a feeding cartridges into a chamber. For example, U.S. Pat. No. spring-biased extension (i.e., a hinged flap) pivotally attached 2,619,876 to Olson discloses a “magazine rifle” with an inter to a mating recess in the bottom of the breech bolt head, nal magazine. adjacent the well opening in which the magazine is inserted. 0005. Other rifles, such as the AR-15 bolt-action rifle, use When the rifle's breech bolt is pushed forward, the Cartridge detachable magazines instead to feed cartridges. Detachable Pusher engages the rim of the next cartridge to be fed into the magazines usually are elongated containers, generally rect chamber, pushing the cartridge out of the magazine, over the angular in cross-section, which are attached to the underside feed ramp, towards the chamber. The Cartridge Pusher raises, of the rifle (i.e., inside a well opening of the receiver). Such against Spring pressure, as it contacts the receiver's feed magazines are commonly made of aluminum alloys, plastic, ramp, allowing the breech bolt to enter the locking area of the steel, or a combination. receiver. 0006 Detachable magazines are usually closed on the sides and open on an upwardly facing top. The open top has a BRIEF DESCRIPTION OF DRAWINGS rectangular opening and includes two round-retaining mem 0016. The above and other objects and advantages of the bers, known as feed lips, which project into or partly close the present invention will become more readily apparent upon opening. An internal spring urges a follower or lifter (i.e., a reading the following description and drawings in which: shaped piece of plastic or metal) toward the open side. The 0017 FIG. 1 depicts a preferred embodiment of Appli spring-loaded follower in turn urges the rounds as a group up cant's Cartridge Pusher pivotally attached to the bottom of a against the lips. The lips act as a stop for the rounds so that breech bolt head; they are not expelled from the magazine. (0018 FIG. 2 is a close-up of FIG. 1 with portions 0007 Rounds are stacked or oriented in the detachable magazine Such that the longitudinal axes of the rounds are removed; substantially parallel and perpendicular to the direction of 0019 FIG.3 depicts the Cartridge Pusher initially engag travel of the spring and follower. Adjoining rounds are ori ing the next cartridge in a magazine attached to the underside ented side-by-side and in the same direction, i.e., the bullets of a rifle; of adjacent rounds are next to each other, as are the cases. 0020 FIG. 4 is an enlarged view of an encircled portion of 0008. The rounds are usually stacked in the magazine, FIG.3: either in a single straight column or in a staggered (ZigZag) 0021 FIG.5 depicts the Cartridge Pusher while a cartridge column (also called double-stacked or high-capacity) fash is being stripped from the magazine and fed into the rifle’s ion. The double-stacked magazines, being wider, have a receiver; and higher round capacity compared to single-column magazines 0022 FIG. 6 depicts the position of the Cartridge Pusher of the same overall length. after the cartridge has been stripped and fed into the receiver. 0009. At the top of such magazines, the lips alternately retain the left and right top-most round, as the rounds are fed DETAILED DESCRIPTION OF PREFERRED up and picked off. The top-most round is held in place by only EMBODIMENT(S) one of the lips. Hereafter the term “magazine' will mean 0023 Referring to The drawings in detail, Applicant has magazines where the lips alternately retain the top-most disclosed a mechanical device 100 to enhance stripping car round. tridges (e.g., 102) out of a detachable, double-stack magazine US 2013/0055611 A1 Mar. 7, 2013

104 and to enhance feeding the cartridges into the firing b. removably attaching the inserted magazine to the chamber 106 of a bolt-action repeating rifle 108. O.F. Moss receiver; and berg & Sons, Inc. (“Mossberg) is the Assignee of this inven c. assisting stripping the cartridges from the magazine and tion. Mossberg markets this device as the “Cartridge Pusher.” assisting feeding the cartridges into a chamber of the 0024. The Cartridge Pusher 100 comprises: a hinged bolt-action repeating rifle by a spring-biased hinged extension or flap 110 pinned, by a cross pin 112, into a mating flap, pinned in a mating recess in a breech bolt head, recess 114 (preferably machined) into the lower portion of the adjacent the well opening and the inserted magazine, via breech bolt head 116; wherein the flap 110 can pivot upon the the following steps: cross pin 112; and wherein the flap is actuated or biased by a i. lowering the flap, by spring biasing, away from the spring 120 contained in another recess 122 (preferably breech bolt head when the breech bolt is in a retracted machined) into the bottom of breech bolt head 116. position; 0025. The flap 110 acts as an extension of the breech bolt ii. pushing the breech bolt head forward; head 116 down into the magazine 104 to provide reliable iii. as the breech bolt head moves forward, engaging the stripping and feeding of the cartridges contained in the maga spring-biased flap with a rim of a next cartridge to be zine. Since the flap 110 is hinged and spring biased, the flap fed from the magazine into the chamber, whereby the 110 can extend (i.e., pivot away from the breech bolt head flap pushes the cartridge out of the magazine, over a 116 see FIGS. 3-5) or collapse (see FIG. 6) as needed to feed ramp of the magazine, towards a chamber of the allow the breech bolt 124 to pass through the receiver 126. rifle; and 0026. As the breech bolt 124 is being pushed forward, the iv. raising the flap, against spring pressure, as a distal end flap 110 is held in the raised (collapsed) position by a solid of the flap contacts a feed ramp of the receiver, allow portion 128 of the receiver 126. Upon entering the magazine ing a breechbolt to entera locking area of the receiver. well opening 130 of the receiver 126, the flap 110 lowers 3. The method of claim 2 further comprising: under spring pressure. The flap 110 reaches its fully lowered i. holding the flap in a raised position, as the breech bolt is position (see FIGS. 3-4) prior to engaging a rim 132 of the being pushed forward, by a portion of the receiver; and next cartridge 134 held in the magazine 104. As the breech ii. lowering the flap, under spring pressure, upon the flap bolt 124 continues being pushed forward, the flap 110 entering the magazine well opening, whereupon the flap engages the rim 132 of the next cartridge 134 to be fed into the reaches a fully lowered position prior to engaging the firing chamber 106, pushing the cartridge 134 out of the rim of the next cartridge held in the magazine. magazine 104 (see FIG. 5), over the receiver's feed ramp 138, 4. (canceled) towards the chamber 106. The Cartridge Pusher 100 raises, 5. (canceled) against spring pressure, as it contacts the feed ramp 138, 6. (canceled) allowing the breech bolt 124 to enter the locking area 140 of 7. (canceled) the receiver 126. 8. In a bolt-action repeating rifle of the type having a 0027 Applicants invention, in a broad sense, can also be receiver, a firing chamber, a moveable breech bolt, a breech thought of as a method comprising: bolt head attached to the breech bolt, and a magazine well 0028 a. inserting a detachable multi-stack magazine, opening in the receiver for receiving a detachable double with stored cartridges, into a magazine well opening of stack magazine, the improvement comprising: a receiver of a bolt-action repeating rifle; a. a detachable double-stack magazine, loaded with car 0029 b. removably attaching the inserted magazine to tridges, inserted into the well opening of the bolt-action the receiver, and repeating rifle and removably attached to the receiver; 0030 c. assisting stripping the cartridges from the and assistance means for stripping the cartridges from magazine and assisting feeding the cartridges into a the double-stack magazine and for feeding the cartridges chamber of the rifle by a spring-biased hinged flap, into the chamber, wherein the assistance means com pinned in a mating recess for the flap in a breech bolt prises: head, adjacent the well opening and the inserted maga i. a spring-biased flap hinged in a mating recess, in a Z10. bottom of the breech bolt head, adjacent the well 0031. It should be understood by those skilled in the art opening in which a magazine is inserted; that obvious structural modifications can be made to the ii. a spring which tends to lower the flap away from the invention, without departing from the spirit of the invention. breechbolt head, when the breechbolt is in a retracted Accordingly, reference should be made primarily to the position; accompanying claims rather than the foregoing description to iii. the spring-biased flap, when the breechbolt is pushed determine the scope of the invention. forward, engages a rim of a next cartridge to be fed 0032 Having thus described the invention, from the magazine into the chamber, pushing the car I claim: tridge out of the magazine, over a feed ramp of the 1. (canceled) magazine, towards the chamber; and 2. A method comprising: iv. the flap raises, against Spring pressure, as the flap a. inserting a detachable multi-stack magazine, with held contacts a feed ramp of the receiver, allowing the cartridges, into a magazine well opening of a receiver of breech bolt to enter the locking area of the receiver. a bolt-action repeating rifle; k k k k k