This invention relates to firearm cartridge clips having features that facilitate the loading of cartridge shells into the clips.
Traditional firearm cartridge clips require that the cartridge shells be manually loaded one at a time through an upper opening into the clip overcoming the progressively increasing resistance of a clip spring. Generally, each cartridge shell, as it is being loaded, is pressed against a previously loaded shell requiring considerable finger dexterity and strength. Many people do not have the prerequisite finger strength or dexterity to manually load a firearm cartridge clip. Others are only able to partially load the clips, as the dexterity and strength required to fully load the clip exceeds their capabilities. Furthermore, resistance of the clip spring can slow the speed with which a clip is loaded, as well as tire an individual that has to load multiple clips.
Many attempts have been made to provide clips or devices that are used with clips to facilitate the loading of the cartridge shells into the clips. Some of the modified clips or devices withdraw the cartridge support seat from the clip opening by drawing down the clip spring to reduce the loading resistance. Such modified clips or devices, although reducing the loading resistance, increase the likelihood that the cartridge shells will fall into the clip in a vertical or diagonal orientation, requiring that the clip be emptied and reloaded. A number of such modified clips are described in patents that are classified in U.S. Class 42, subclass 50.
One of the principal objects and advantages of the present invention is to overcome the disadvantages of much of the prior art clips and provide a rather simple and easy-to-use clip that materially facilitates the loading of the firearm cartridge clip.
These and other objects and advantages of the present invention will become apparent upon reading the following description in conjunction with the drawings.
A firearm clip cartridge is provided with a structure that reduces spring force acting on a cartridge support seat when loading cartridge shells into a housing of the firearm clip cartridge. By reducing force on the seat, cartridge shells can be loaded into the cartridge with greater ease, accuracy, and efficiency.
According to one aspect, a firearm cartridge clip is provided which includes a housing, a cartridge support seat, a spring, and a spring force-reducing structure. The housing has a chamber with a top end, a bottom end, and an opening at the top end. The chamber is configured to store a sequential array of cartridge shells and the opening configured for loading shells and feeding shells to a firearm. The cartridge support seat is carried for movement in the chamber along a central axis of the housing. A spring provided between the cartridge support seat and the bottom end of the chamber is configured to urge the cartridge support seat toward the opening. A spring force-reducing structure is provided between the seat and the housing and is configured to reduce urging of the seat by the spring toward the opening.
According to another aspect, a firearm cartridge clip is provided for receiving and storing a plurality of cartridge shells and for sequentially feeding such loaded cartridge shells to a breech of a firearm when a loaded cartridge clip is attached to the firearm, and includes a cartridge clip housing, a cartridge support seat, an elevator element, a chamber compression spring, and loading facilitating means. The cartridge clip housing has a cartridge shell storage chamber formed therein extending longitudinally along a general housing axis between a bottom end and a top end, said top end having an opening through which the cartridge shells are (1) sequentially manually loaded into the storage chamber for storage, and (2) sequentially fed from the storage chamber into the firearm when the firearm cartridge clip is attached to the firearm. The cartridge support seat is movably mounted in the storage chamber for (1) supporting the cartridge shells stacked one on top of another within the storage chamber substantially transverse to the housing axis, and (2) moving the cartridges along the housing axis. The elevator element, separate from the cartridge support seat, is movably mounted in the storage chamber intermediate the cartridge support seat and the bottom end for movement along the housing axis. The chamber compression spring is mounted in the housing chamber intermediate the elevator element and the bottom end. The chamber compression spring has a known spring rate and an initial compression for normally urging the elevator element and the cartridge support seat toward the top end to sequentially feed cartridge shells to the top end opening. The loading facilitating means is operatively connected to the chamber compression spring for selectively rendering the compression control spring at least partially ineffective to reduce the urging of the cartridge support seat toward the top end and thereby reduce the manual effort required to load the cartridge shells through the top opening and into the housing chamber.
According to yet another aspect, a firearm cartridge clip is provided for receiving a plurality of cartridge shells and for sequentially feeding such loaded cartridge shells to a breech of a firearm when a loaded cartridge clip is attached to the firearm, and includes a cartridge clip housing, a cartridge support seat, an elevator element, a first chamber compression spring, a second chamber compression spring, and a loading facilitating means. The cartridge clip housing has a cartridge shell storage chamber formed therein extending longitudinally along a general housing axis between a bottom end and a top end, said top end having an opening through which the cartridge shells are (1) sequentially loaded into the storage chamber for storage, and (2) sequentially fed from the storage chamber into the firearm when the firearm cartridge clip is attached to the firearm. The cartridge support seat is movably mounted in the storage chamber for (1) supporting the cartridge shells stacked one on top of another within the storage chamber substantially transverse to the housing axis, and (2) moving the cartridges along the housing axis. The elevator element is movably mounted in the storage chamber intermediate the cartridge support seat and the bottom end for movement along the housing axis. The first chamber compression spring is mounted in the housing chamber intermediate the elevator element and the bottom end. The first chamber compression spring has a known spring rate and an initial compression for normally urging the elevator element and the cartridge support seat toward the top end to feed cartridge shells from the top opening. The second chamber compression spring is mounted in the housing chamber intermediate the cartridge support seat and the elevator element. The second chamber compression spring has a known spring rate and an initial compression for urging the cartridge support seat toward the top end. The loading facilitating means is operatively connected to the elevator element for selectively lowering the elevator means toward the bottom end to reduce the urging of the cartridge support shell toward the top end and thereby selectively reducing the effort required to load the cartridge shells through the top opening and into the housing chamber.
According to even yet another aspect, a firearm cartridge clip is provided for receiving a plurality of cartridge shells and for sequentially feeding such loaded cartridge shells to a breech of a firearm when a loaded cartridge clip is attached to the firearm, and includes a cartridge clip housing, a cartridge support seat, an elevator element, a chamber compression spring, a movement restraining compression spring, and a loading facilitating means. The cartridge clip housing has a cartridge shell storage chamber formed therein extending longitudinally along a general housing axis between a bottom end and a top end, said top end having an opening through which the cartridge shells are (1) sequentially manually loaded into the storage chamber for storage, and (2) sequentially fed from the storage chamber into the firearm when the firearm cartridge clip is attached to the firearm. The cartridge support seat is movably mounted in the storage chamber for (1) supporting the cartridge shells stacked one on top of another within the storage chamber substantially transverse to the housing axis, and (2) moving the cartridges along the housing axis. The elevator element is movably mounted in the storage chamber intermediate the cartridge support seat and the bottom end for movement along the housing axis. The chamber compression spring is mounted in the housing chamber intermediate the elevator element and the bottom end. The chamber compression spring has an initial compression for normally urging the elevator element and the cartridge support seat toward the top end to feed cartridge shells from the top opening. The movement-restraining compression spring is mounted in the housing chamber intermediate the cartridge support seat and the elevator element. The movement-restraining compression spring has an initial compression for urging the cartridge support seat toward the top end. The loading facilitating means is operatively connected to the elevator element for selectively lowering the elevator means toward the bottom end to reduce the initial compression of the movement restraining compression spring and the urging of the cartridge support seat toward the top end and thereby selectively reducing the manual effort required to load the cartridge shells through the top opening and into the housing chamber.
Preferred embodiments of the invention are described below with reference to the following accompanying drawings.
This disclosure of the invention is submitted in furtherance of the constitutional purposes of the U.S. Patent Laws “to promote the progress of science and useful arts” (Article 1, Section 8).
Referring now to the drawings, there is shown in
The clip 10 has a cartridge support seat 52 mounted in the chamber 36 for vertical movement along the axis 34, as shown in
The clip 10 has an elevator element 60, separate from the cartridge support seat 52, mounted in the chamber 36 intermediate the seat 52 and the base 48 for vertical or floating movement along the axis 34. The elevator element 60 has an elongated body 62 with an upper surface 64 and a lower surface 66.
Clip 10 has a chamber compression spring 70 mounted in the chamber 36 between the elevator element 60 and the base 48 for normally urging the elevator element 60 and the seat 52 upward to help feed the stored cartridge shells 11 through the opening 42. The chamber compression spring 70 has a known spring rate. When mounted in the chamber 36, the chamber compression spring 70 has a preset initial compression to urge the elevator element 60 and the seat 52 upward.
The chamber compression spring 70 has a plurality of coils 72 that extend from an upper end 74 to a lower end 76. The upper end 74 engages or is fastened to the bottom surface 66 of the elevator element 60 and the lower end 76 engages or is fastened to the bottom base 48. In a preferred embodiment, a majority of the coils 72 are elliptical or somewhat rectangular when viewed perpendicular to the housing axis 34 (see
Clip 10 has a movement restraining means, generally designated with the reference numeral 80 that is associated with the cartridge support seat 52 for resisting downward movement of the cartridge support seat 52. In the embodiment shown in
Clip 10 further includes a loading facilitating means 92 that is operatively connected to the chamber compression spring 70 to selectively render the chamber compression spring 70, at least partially, ineffective in urging the elevator element 60 and the cartridge support seat 52 upward. When the loading facilitating means 92 is activated, the upward force against the cartridge support seat 52 is reduced to facilitate manual loading of cartridge shells through the opening 42 and into the cartridge shell storage chamber. Once the loading facilitating means 92 is deactivated, the chamber compression spring 70 is rendered effective to urge the elevator means 60 and the cartridge support seat 52 upward to feed the stored cartridge shells sequentially into the breech 16 of the firearm 12.
In the embodiment illustrated in
The loading facilitating means 92 includes releasable locking means 100 for assisting in the activation and deactivation of the loading facilitating means 92. In the embodiment illustrated in
Preferably, the bottom base 48 is removable from the housing 20 utilizing side grooves 120 (see
Operation of the firearm cartridge clip 10 is illustrated by the sequence views of
In
In the state shown in
Consequently, during the loading cycle, when the upward force of the compression spring 70 is restrained, the force necessary to insert a cartridge shell is dramatically reduced. The downward force necessary to insert a cartridge shell 11 has been reduced to that required to overcome the friction force of the side leaf springs 82 and 84. Such a reduction dramatically increases the efficiency of the manual loading process and reduces the level of manual dexterity required to load the clip. Persons with weak finger muscles are now able to load the clip 10.
After the clip 10 has been fully loaded as illustrated in
An alternate embodiment is illustrated in
Clip 210 has a cartridge support seat 252 mounted in the cartridge shell storage chamber 226 for vertical movement to and from the opening 222 for supporting cartridge shells 11 stacked one of top of another within the chamber 226. The seat 252 has an elongated body 254 with an upper support surface 256 for engaging a shell 11.
Clip 210 has an elevator element 260, separate from the seat 252, and mounted in the cartridge shell storage chamber 226 between the seat 252 and the base 224 for vertical movement along the housing axis 228. The elevator element 260 has an elongated body 262 with an upper surface 264 and a lower surface 266.
Clip 210 includes a chamber compression spring 270 that is mounted in the cartridge shell storage chamber 226 between the elevator element 260 and the base 224. The chamber compression spring 270 is mounted in the chamber 226 in a pre-compressed condition to urge the elevator element 260 and the seat 252 upward toward the opening 222. The chamber compression spring 226 has spiral coils 272 that extend from an upper end 274 to a lower end 276. Preferably, the coils 274 have a somewhat elliptical or rectangular shape when viewed transverse to the housing axis 228. The upper end 274 engages the lower surface 266 of the elevator element 260 and the lower end 276 bears against the base 224. The chamber compression spring 270 has a known spring rate.
The clip 210 has a movement restraining means generally identified by reference numeral 280 for restraining the downward movement of the seat 252. In this embodiment, the movement restraining means 280 comprises a coil compression spring 282 that is mounted within the chamber 226 between the seat 252 and the elevator element 260 in a pre-compressed condition. The coil compression spring 282 has an upper end 284 that engages the seat 252 and urges the seat 252 upward toward the opening 222. The coil compression spring 282 has a lower end 286 that engages and urges the elevator element 260 downward toward the base 224. The coil compression spring 282 has a known spring rate that is less (weaker) than the spring rate of the chamber compression spring 270 so that spring 282 deflects to a greater degree than chamber compression spring 270.
The clip 210 has a loading facilitating means 292 for facilitating the loading of live cartridge shells 11 into the storage chamber 226. The facilitating means 292 includes a releasable latching means 294 (see
In this embodiment, the releasable latching means 294 (see
The operation of this embodiment will be described with reference to
Once the firearm latch is removed from the notch 18, the arm hook 298 is disengaged, permitting the chamber compression spring 270 to drive the base 224 and inner side walls 220 downward from the feeding position to the extended loading position illustrated in
Now the empty clip 210 is ready for loading.
Now the clip 210 is ready for insertion into the firearm 12.
A further alternate embodiment is illustrated in
The clip 310 has a cartridge support seat 352 mounted in the storage chamber 336 for movement along the housing axis 334. The seat 352 has an elongated body 354 with an upper cartridge support surface 356. The clip 310 additionally has an elevator element 360, separate from the seat 352, that is movably mounted in the storage chamber 336 for movement between the seat 352 and the base 348. The elevator element 360 has an elongated body 362 with an upper surface 364 and a lower surface 366.
The clip 310 includes a chamber compression spring 370 mounted in the storage chamber 336 between the elevator element 360 and the base 348. The chamber compression spring 370 has spiral coils 372 extending to an upper end 374 engaging the lower surface 366 of the elevator element 360 and extending to a lower end 376 engaging the base 348. The chamber compression spring 370 has a known spring rate and is mounted in the storage chamber 336 in a pre-compressed condition urging the elevator element 360 upward.
The clip 310 further includes a movement restraining means 380 operatively connected to the cartridge support seat 352 for restraining the downward movement of the support seat 352 in the storage chamber 336. The movement restraining means 380 comprises a coil compression spring 382 having spiral coils 384 extending to an upper end 386 and a lower end 388. The upper end 386 engages the elongated body 354 and urges the support seat 352 upward. The lower end 388 engages the upper surface 364 and urges the elevator means 360 downward. The coil compression spring 382 has a known spring rate that is less (weaker) than the spring rate of the chamber compression spring 370.
The clip 310 has a loading facilitating means 392 for selectively rendering the chamber compression spring 370, at least partially, ineffective to substantially reduce the upward force exerted against the cartridge support seat 352. Such a force reduction materially reduces the physical effort required to sequentially load the clip 310 with cartridge shells.
The loading facilitating means 392 preferably includes an elongated cable 394 having an upper end 396 operatively connected to the elevator element 360. The elongated cable 394 has a lower end 398 that extends through a keyhole aperture 410 formed in the base 348. The loading facilitating means 392 includes an enlargement or knot 402 formed on the cable 394. The keyhole aperture 410 includes a large aperture section 412 having a cross-section larger than that of the knot 402 to allow the knot 402 to pass therethrough. The keyhole aperture 410 also includes a small aperture section 414, in open communication with the large aperture section 412, having a cross-section less than that of the knot 402 to prevent the knot 402 from passing therethrough.
As illustrated in
The process for loading an empty clip 310 is illustrated in
After the knot 402 passes through the large aperture section 412, the cable 394 is moved rearwardly to move the cable 394 from the large aperture section 412 into the small aperture section to render effective the releasable locking means 400 to hold the elevator element 360 down.
After the clip 310 is fully loaded, the releasable locking means 400 is released to render the chamber compression spring 370 again effective to urge the elevator element 360 and in turn the support seat 352 upward. Specifically, the cable 394 is moved forwardly, moving the knot 402 from the small aperture section 414 to the large aperture section 412 to enable the knot 402 to pass back through the keyhole aperture 410 to render the chamber compression spring 370 effective to push the elevator element 360 upward.
Optionally, base 424 can be constructed from a separate piece that is affixed or fastened to a bottom end of inner side walls 420 of inner telescoping member 415, such as with screws or epoxy adhesive. Likewise, the interior telescoping cartridge shell storage chamber 426 expands from a feeding volume to a loading volume.
Clip 410 has a cartridge support seat 452 mounted in the cartridge shell storage chamber 426 for vertical movement to and from the opening 422 for supporting cartridge shells 11 stacked one of top of another within the chamber 426. The seat 452 has an elongated body 454 with an upper support surface 456 for engaging a shell 11, as shown in
Clip 410 has an elevator element 460, separate from the seat 452, and mounted in the cartridge shell storage chamber 426 between the seat 452 and the base 424 for vertical movement along the housing axis 428. The elevator element 460 has an elongated body 462 with an upper surface 464 and a lower surface 466 (see
Clip 410 includes a chamber compression spring 470 that is mounted in the cartridge shell storage chamber 426 between the elevator element 460 and the base 424. The chamber compression spring 470 is mounted in the chamber 426 in a pre-compressed condition to urge the elevator element 460 and the seat 452 upward toward the opening 422. The chamber compression spring 426 has spiral coils 472 that extend from an upper end 474 to a lower end 476. Preferably, the coils 474 have a somewhat elliptical or rectangular shape when viewed transverse to the housing axis 428. The upper end 474 engages the lower surface 466 of the elevator element 460 and the lower end 476 bears against the base 424. The chamber compression spring 470 has a known spring rate.
The clip 410 has a movement restraining means generally identified by reference numeral 480 for restraining the downward movement of the seat 452. In this embodiment, the movement restraining means 480 comprises a coil compression spring 482 that is mounted within the chamber 426 between the seat 452 and the elevator element 460 in a pre-compressed condition. The coil compression spring 482 has an upper end 484 that engages the seat 452 and urges the seat 452 upward toward the opening 422. The coil compression spring 482 has a lower end 486 that engages and urges the elevator element 460 downward toward the base 424. The coil compression spring 482 has a known spring rate that is less (weaker) than the spring rate of the chamber compression spring 470 so that spring 482 deflects to a greater degree than chamber compression spring 470.
The clip 410 has a loading facilitating means 492 for facilitating the loading of live cartridge shells 11 into the storage chamber 426. The facilitating means 492 includes a releasable latching means 294 (see
In this embodiment, the releasable latching means 294 is identical the that disclosed in the embodiment of
The operation of this embodiment will be described with reference to
Now the empty clip 410 is ready for loading, with cable 493 limiting the extension of spring 472, which means that the smaller compressive forces of spring 482 only need to be overcome when loading shells into clip 410.
Now the clip 410 is ready for insertion into the firearm 12.
The clip 510 has a loading facilitating means 592 for facilitating the loading of live cartridge shells 11 into the storage chamber 526. The facilitating means 592 includes a releasable latching means 294 (see
Cooperation between single chamber compression spring 570 and the pair of leaf springs 582 serves to reduce forces needed when loading shells 11 into clip 510. More particularly, firearm cartridge clip 510 of
The clip 510 has a cartridge support seat 552 mounted in the storage chamber 536 for movement along the housing axis 534. The seat 552 has an elongated body 554 with an upper cartridge support surface 556. The clip 510 additionally has a load facilitating means 592 in the form of a lanyard, or cable 593 that restricts the distance between cartridge support seat 552 and base 524. Alternatively, a cord or rope can be substituted for cable 593. As seat 552 is driven in a downward direction due to loading of shells 11, spring 570 overcomes frictional forces from leaf springs 582 so as to drive lower member 515 downwardly, thereby telescopically extending housing 514. In this manner, spring 570 is not compressed as much as if housing 514 were a set length, which has the effect of reducing the loading force imparted by seat 552 and spring 570.
The clip 510 includes a chamber compression spring 570 mounted in the storage chamber 536 between the seat 552 and the base 524. The chamber compression spring 570 has spiral coils 572 extending to an upper end 516 engaging the lower surface of seat 552 and extending to a lower end 51 engaging the base 524. The chamber compression spring 570 has a known spring rate and is mounted in the storage chamber 526 in a pre-compressed condition so as to urge seat 552 upward.
The clip 510 further includes a movement restraining means 580 operatively connected to the cartridge support seat 552 for restraining the downward movement of the support seat 552 in the storage chamber 526. The movement restraining means 580 comprises a pair of leaf springs 582 each mounted on opposite inner surfaces of outer telescoping member 517. In one case, a hole is provided in an upper end of each leaf spring 582, and a plastic or metal rivet (not shown) is passed through the hole to secure the leaf spring 582 onto the inner surface of member 517. In another case, each leaf spring 582 is press-fit into a rectangular slot (or recess) within an inner surface of member 517 having a width with an interference fit that holds spring 582 therein. The upper end 584 of spring 570 engages the elongated body 554 and urges the support seat 552 upward. The lower end 586 of spring 570 engages the inner surface of base 524 and urges the inner telescoping member 515 downward when forces generated by loading shells and compressing spring 570 exceeds frictional forces created by leaf springs 582. The leaf springs 582 have a known spring rate that generates frictional forces that are less (weaker) than the spring forces created by spring 570. In this manner, loading forces are reduced over those of a traditional, non-telescoping clip.
More particularly, clip 510 has a loading facilitating means 592 for selectively rendering the chamber compression spring 570, at least partially, ineffective to substantially reduce the upward force exerted against the cartridge support seat 552. Such a force reduction materially reduces the physical effort required to sequentially load the clip 510 with cartridge shells.
Loading facilitating means 592 preferably includes an elongated cable 593 having an upper end operatively connected to the elevator element 560 by being molded into element 560 along with an enlargement similar to enlargement 503. Alternatively, cable 593 is secured to element 560 with a fastener, such as a rivet, a screw, or a swage fitting. The elongated cable 593 has a lower end that extends through a bore formed in base 548. Loading facilitating means 592 includes an enlargement or knot 503 formed on cable 593. The bore includes an enlarged portion larger than the bore and sized to receive enlargement 503 having a dimension sized larger than that of the bore. Alternatively, cable 593 is molded into base 524, or is secured with a fastener such as a rivet, a screw, or both. Further alternatively, an eyelet can be formed atop base 524, and cable 593 can be tied or swaged onto the eyelet.
Cable 593 has an assembled length that maintains a maximum distance between seat 552 and base 524 corresponding with the respective positions when clip 510 is fully collapsed into the feeding position, as shown in
The process for loading an empty clip 510 is illustrated in
To facilitate the loading of cartridge shells 11 into the storage chamber 526, the user activates the loading facilitating means 592 by releasing clip 510 from the breech of a gun. As discussed with previously described telescoping housings, this enables member 515 to telescope out from member 517. As this happens, cable 593 draws seat 552 downwardly within housing 514, maintaining a set distance between seat 552 and base 524. This action renders spring 570 less effective in exerting an upward force on the cartridge support seat 552. Such an upward force reduction substantially reduces the upward force applied by the compression spring 582 to the seat 552, as member 515 slides along leaf springs 582 (see
After the lower member 515 is released from upper member 517 via the clip latch of the releasable latching means 294 (see
As shown in
As shown in
According to one construction, the inner housing member, outer housing member, and base plate for each of the previously described embodiments are each constructed from plastic material such as Nylon™, high density polyethylene (HDPE), or a carbon-filled plastic material. Also according to one construction, the springs are constructed from spring steel.
In compliance with the statute, the invention has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the invention is not limited to the specific features shown and described, since the means herein disclosed comprise preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted in accordance with the doctrine of equivalents.
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Number | Date | Country | |
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20050188579 A1 | Sep 2005 | US |