Small firearms (pistols, assault rifles, submachine guns, etc.) utilize and fire rounds (also known as cartridges and ammunition). Each round is substantially elongated and comprises a deep cuplike case (also known as a shell casing and sometimes also a cartridge) and a bullet, slug, or head coupled to the case. The case, usually of brass, has a closed or rear end and an open or front end, and is partially filled with an explosive propellant. The rear end of the case has a rim or flange and contains a primer that will explode and ignite the propellant when struck by the hammer of the firearm. The bullet, usually of lead (optionally jacketed) is partially inserted into the front end of the case and the case is crimped onto the bullet to hold it in place.
A magazine or clip usually holds the rounds and feeds them into the firearm. Detachable magazines have become dominant throughout the world. The term ‘magazine’ is broad, encompassing several geometric variations, including box, curved, and drum magazines. Most detachable boxed and curved magazines are similar, varying in form and structure, rather than in their general principles of operation. Drum magazine store rounds differently than boxed and curved magazines, yet they all have upper, open tops.
Magazines usually take the form of an elongated container having a generally rectangular cross-section, which is removably attached to the underside of the firearm. Magazines are commonly made of aluminum alloys, plastic, steel, or a combination. They are usually closed on five sides and open on a sixth, upwardly facing, top, side, or end, and are substantially hollow. The top or open side has a rectangular end and includes two round-retaining members, known as feed lips. Most box magazines have an internal spring which urges a follower or pusher (blank shaped piece of plastic or metal) straight toward the open side. The follower in turn urges the rounds as a group up against the lips. Some magazines, like the popular .22LR (Long Rifle) magazines made by Sturm Ruger and Co. (Ruger), of Southport, Conn., and sold under Ruger's trademark 10/22, have an internal rotatable drum which holds rounds in 1, 5, or 10 elongated indents or grooves in the drum. The drum feeds each round toward the lips by internal coiled spring pressure. When a top-most round is ejected or unloaded from the magazine the internal drum also acts as follower and feeds a new round between the lips. The lips of magazines act as a stop for the rounds so that they are not expelled from the magazine.
Rounds are stacked or oriented in the magazine such that the longitudinal axes of the rounds are substantially parallel with the barrel of the firearm. Adjoining rounds are oriented side-by-side, i.e., the bullets of adjacent rounds are next to each other, as are the cases.
The rounds are usually stacked in the magazine, either in a single straight column (also called single-stacked) or in a staggered, zigzag, column fashion (also called double-stacked or high-capacity magazines), or arranged in a circle in drum magazines.
Commonly, in pistol magazines and in some submachine gun magazines, whether staggered or not, the space between the retaining lips is smaller than the case diameter of the rounds so that the two lips of the magazine hold the topmost round. Magazines of most assault rifles and submachine guns contain staggered rounds, and in contrast to the above pistol magazines, the topmost round is held in place by only a single lip.
Prior to use, a firearm magazine must be loaded (charged or filled). When a magazine is being loaded, it is necessary to depress any previously loaded rounds and the follower to provide space below the lips so that each additional round can be inserted. Each time another round is loaded the spring is further stressed, presenting an accumulating burden on the fingers of the user who manually loads the rounds.
Often it is necessary to unload or expel rounds from a loaded magazine for cleaning, safety, service, or storage. Unloading rounds can be done with one's bare hands, yet pain intensifies as more rounds are unloaded one-by-one against the spring's force on the rounds toward the lips. Rounds may be unloaded from a magazine by either pushing or forcing the top round forward from its rim or flange side so that it moves parallel the lips, or by releasing spring pressure from the topmost round, thereby removing the force pressing the topmost round to the lips so that it can be slid forward from the lips and out of the magazine.
To increase unloading speed and decrease finger pain, several tools have been developed to unload magazines. These are divided between:
Some prior-art unloaders are shown in the following tables:
Alternatively, users often use simple, but awkward and difficult-to-use elongated objects to push out rounds below the lips (type A above) or push down the second round to drop the topmost round out (type B). These objects can be an edge of a screwdriver, knife, a loose round, or unloading protrusions added to magazine loader tools or edges thereof.
Accordingly, several advantages of one or more aspects of our unloader design are to provide:
Further advantages of one or more aspects will become apparent from a consideration of the drawings and ensuing description.
A tool and method for facilitating unloading of rounds out of a firearm magazine comprises, in one aspect, two parts: a magazine adapter and a pusher hinged to or pivotable on the adapter at the lower end of each. They are constructed to angle between an orientation parallel to or at an acute open angle to the back wall of the magazine. The pusher has a projecting plunger that is distal from the pivot, is generally perpendicular to the pusher, and has a distal tip. The adapter is shaped to fit on the top rear-side of a specified set of magazines, for example: the 1911 .45 cal single-stack magazines or the Ruger 10/22 .22LR magazines. When the unloader is fitted to the magazine and the pusher is angled away from the magazine, the plunger is withdrawn from between the lips of the magazine and the topmost round. When the pusher is pivoted parallel to the magazine it pushes the rear-side or rim of the topmost round underneath the lips forward and out of the magazine. The user holds the magazine and the adapter firmly in place with one hand while angling the pusher back and forth quickly with the other hand, thus pushing and expelling the rounds forward one-by-one with the tip of the plunger. The unloader can be removed from the magazine and is of a non-gravitational type.
Adapter or adapter plate 12 comprises a substantially flat plate having two perpendicular side walls 14 extending out from its side edges. Each side wall 14 has a round hinge extension at its lower end with an outwardly projecting pintle or pivot pin 16 (best seen in
Pusher or pusher plate 20 has a substantially flat upper part and a bifurcated bottom part comprising two legs with a space between the legs. As shown in
Pusher 20 includes a stopper recess 28 (
The unloader provides substantial assistance to a firearm user by enabling the user to safely, comfortably, and very rapidly unload magazines without finger pain or injury. Principally, unloading rounds from a magazine is accomplished by repeatedly operating the unloader (moving its pusher from it open position to its closed position) to sequentially push forward the top round of the magazine far enough to clear it from the holding lips.
To install the unloader (comprising the hinged adapter and pusher plates) on the magazine, side walls 14 of the adapter are slid over the lateral sides of the magazine as shown in
The rounds in a loaded magazine can be quickly unloaded by fitting and holding the unloader onto the back side of the magazine with one hand, preferably pressing adapter body 12 with the thumb, and holding the other side of the magazine with the fingers as illustrated in
By altering the design and dimensions of the unloader's parts under the principles and methods described, a range of unloaders can be constructed to unload a variety of magazines and round calibers.
In this embodiment, unloader 50 is positioned at the top rear wall of magazine 70 with the inwardly inclined side-walls portions 56 positioned resting on the rear top of the magazine's lips 72 (
As shown, the same basic construction and method of operation of unloader 50 remain as explained further above. Those skilled in the art can easily design and construct alternative unloaders to fit other magazine types.
Note that, as with the other embodiments, back plate 100 has a body portion having a bottom end (including magazine recess 19), a top end, and a pair of opposite side edges extending between the bottom and top ends. The bottom end is pivotable with respect to the back wall of magazine 40 so that the body portion of the plate can be tilted or pivoted with respect to the back wall, against or away from the back wall. Its top end 106 can be manually grasped by a user. The plate has a pair of side walls 102 which extend perpendicularly from the opposite side edges of the body portion. The side walls are spaced to sandwich and extend only partially over the lateral sides of the magazine, so that when the plate is pivoted away from the back wall (
Using the right or other hand, the user initially tilts the top of unloader away to the open position from the magazine as shown in
The user's right hand now tilts the unloader back and forth. If the thumb or finger of the user's left hand holds the loader in the correct position, its hole 108 will receive the magazine's catch pin 18P and plunger 104 will contact the rear of the rounds and expel them. When the unloader is pivoted against the magazine, if the loader isn't in the correct position, hole 108 will not receive the pin and the plunger will not contact the top round or expel it. In this case the user will be able to adjust their thumb or finger—and hence the unloader's position—easily so that hole 108 will receive the pin and the plunger will contact and expel rounds after one or two tries. The loader is effectively hinged or made pivotable on the magazine through the use of its bottom edge as a pivot and thumb or finger force to hold the loader in place. Sidewalls 102 stabilize and center the unloader's horizontal position during operation.
This unloader is less stable and requires more concentration and skill to operate than the previous two-part versions, yet can unload rounds equally well. Again, those skilled in the art can easily modify the design and construct alternative unloaders to fit other magazine types.
The reader will see that we have provided an efficient, simple, low-cost, palm-size, comfortable and safe magazine unloader comprising few parts. The unloader and variants thereof can unload a wide range of magazines by pushing the top round forward with a plunger extending from a mechanically hinged pusher or thumb- (or finger-) hinged pusher. The unloader allows painless, comfortable, and very quick unloading of rounds.
While the above description contains many specificities, these should not be construed as limitation on the scope but rather as an exemplification of several embodiments thereof.
All numerical values provided are approximate; they can be varied to adapt to other magazines or round types and or sizes. The following are further examples of some but not all variations and ramifications:
The unloader can be adapted to fit and operate with most pistol and rifle magazines and calibers available in the market by providing suitable changes in construction and dimensions under the principles described above. While magazines with followers that are pushed upward by springs have been discussed, the unloader can as well be used to unload magazines with followers that are pushed up by spring-driven rotatable drums.
The unloader and its components may be made of various polymer or other plastic materials, or, alternatively, of other materials, as aluminum, steel or wood, or any combination thereof.
Various other hinging mechanisms and methods may replace the hinging mentioned above. For example, hinging between the adapter body and pusher can be done with a male-female interlocking hinge, a male-female hinge with a coupling pin, and hinging using flexible parts such as rubber or silicon. Hinging can be on the opposite (rear) side of the unloader/plunger.
Various other stopper mechanisms and methods may replace the stopper mentioned above. For example, a semi-circular hinge projection and matching hinge hole designed to limit relative movement can be easily designed and constructed.
The maximum open angle between the adapter body and the pusher may be altered to adapt to other magazines and rounds.
The unloader may also be constructed to include or accept insertable spacer(s) positioned at the inner part of the adapter body opening to accommodate magazines of different widths and/or overall rear-side construction and dimensions.
The unloader's plunger may also be constructed to include or accept insertable spacer(s) or adjusters to change its length or construction to accommodate magazines of different depths and lip construction and/or adapt to rounds of different calibers and lengths.
The adapter body of the unloader may be altered to be removably fixable or lockable to the upper top side of the magazine so the user will not have to hold the adapter body in place when unloading—workable under the method and descriptions here described.
A lock mechanism may be included in the unloader to lock and keep the adapter body and pusher closed so to minimize the size of the unloader for transport and storage.
The unloader plunger may be made foldable, hinged, or removable so to reduce size further.
Accordingly, the scope of our loader should be determined not by the embodiments illustrated, but by the appended claims and their legal equivalents.
This application claims priority of Provisional Patent Application Ser. No. 62/618,328, Filed 2018 Jan. 7.
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Entry |
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Number | Date | Country | |
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62618328 | Jan 2018 | US |