Description:[0001] The present application claims no priority from any of the patent application(s).
TECHNICAL FIELD
[0002] The present disclosure generally relates to field of firearms. More specifically, the present specification relates to a primer feeding, firing and ejecting mechanism.
BACKGROUND
[0003] This section is intended to introduce the reader to various aspects of art, which may be related to various aspects of the present disclosure that are described or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Accordingly, it should be understood that these statements in this background section are to be read in this light, and not as admissions of prior art. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
[0004] Currently for firearms, during firing condition, a charge (or explosive) and a load (or projectile) are fed into a barrel of the firearm followed by manual insertion of an unfired primer into a spindle of the firearm. Followed by detonation of the charge by the unfired primer, via application of a force or an electric current on the unfired primer. Further followed by, removal of the used unfired primer, referred to as a fired primer, from the spindle. In order to insert a new unfired primer in the spindle of the firearm. However, this whole process, as described, involves manual labour by military personnels, especially for feeding, detonating (or firing) and ejecting the primer. Such manual intervention results in errors and challenges in inserting of the primer (particularly in situations with limited visibility) that leads to incidents of injury. Also, insufficient space and miscoordination between the personnels also contributes to difficulties in manual loading of the primer.
[0005] In light of the above stated discussion, there exists a need of an automated primer feeding, firing and ejecting mechanism to overcome but may not be limited to the above stated disadvantages.
SUMMARY
[0006] This summary is provided to introduce concepts related to the field of firearms. More specifically, the present specification relates to a primer feeding, firing and ejecting mechanism. This summary is not intended to identify the essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.
[0007] In a non-limiting embodiment, the present disclosure provides the primer feeding, firing and ejecting mechanism that includes a magazine holder, a primer feed unit, a firing unit, a safety lock unit, and a primer extractor unit. In addition, the magazine is configured to rotate against a pivot point. The magazine holder holds a magazine that houses a plurality of unfired primer. Additionally, the magazine holder is supported by a biasing member. Further, the primer feed unit is configured to feed the unfired primer from the magazine to a spindle of a firearm. In addition, the primer feed unit includes an actuator and a lever arrangement. The actuator is configured to drive the lever arrangement, for feeding the unfired primer in the spindle. Additionally, the firing unit includes a firing pin for striking the unfired primer. Further, the safety lock unit enabling obstruction of the firing pin for misfire prevention of the firearm. Furthermore, the primer extractor unit is configured for extraction of a fired primer from the spindle.
[0008] In one embodiment, the pivot point is positioned on a breechblock carrier of the firearm. Also, the spindle is mounted on a breech-screw of the firearm. A breechblock carrier is pivoted on a breech ring of the firearm by a crankshaft assembly. The crankshaft assembly is rotated by a breech opening device.
[0009] In another embodiment, the breech-screw is rotationally mounted on the breechblock carrier. In addition, a sector gear is mounted on the breech-screw. Also, a rack is in mesh with the sector gear. The rack is housed in the breechblock carrier and the rack enables screwing or unscrewing of the breech-screw on the breech ring. In addition, the rack is actuated by a sector gear of the crankshaft assembly. Additionally, about 45 degrees rotation of the breech-screw facilities screwing or unscrewing of the breech-screw. Further, for 38 degrees from the 45 degrees the magazine holder is idle and for 7 degrees from the 45 degrees the magazine holder is rotated. The rotation of the magazine holder is enabled by engagement of stopper pins with the magazine holder. Furthermore, the stopper pins are mounted on the breech-screw.
[0010] In yet another embodiment, the primer feed unit and the safety lock unit are mounted on the rack. Additionally, the lever arrangement includes at least one spring-loaded angle lever pivotally mounted on the rack. Also, the lever arrangement includes a fulcrum pivotally mounted on the breechblock carrier.
[0011] In one embodiment, a firearm firing condition includes the step of driving the rack. The driving of the rack rotates the breech-screw. In addition, the rotation of the breech-screw facilitates screwing and locking of the breech-screw on the breech ring. Also, the rotation of the breech-screw rotates the magazine holder for offsetting delivery end of the magazine from the spindle axis. Further, driving of the rack also offsets the primer feed unit and the delivery end of the magazine. Furthermore, driving of the rack aligns axis of the firing pin and the unfired primer. The aforementioned action of rotation of the breech-screw, offsetting of the primer feed unit and the delivery end, and aligning the axis of the firing pin and the unfired primer occurs simultaneously. The firearm firing condition further include the step of unlocking the safety lock unit, in order to set free the firing pin of the firing unit (110). The firearm firing condition further include the step of striking the unfired primer by the firing pin of the firing unit to ignite a charge.
[0012] In another embodiment, a firearm non-firing condition includes the step of driving the rack. The driving of the rack rotates the breech-screw. Also, the rotation of the breech-screw facilitates unscrewing of the breech-screw on the breech ring. Further, the rotation of the breech-screw facilitates ejection of the fired primer from the spindle, by the primer extractor unit. In addition, the rotation of the breech-screw rotates the magazine holder for aligning delivery end of the magazine to the spindle axis. Additionally, the ejection of the fired primer occurs before rotation of the magazine holder. Further, the driving of the rack aligns the primer feed unit with the delivery end of the magazine. The aforementioned action of rotation of the breech-screw and aligning of the primer feed unit with the delivery end occurs simultaneously. The firearm non-firing condition includes the step of rotating the breechblock carrier to open the breech ring end, by rotating the crankshaft assembly. The firearm non-firing condition further includes the step of feeding a charge in a barrel. The firearm non-firing condition further includes the step of actuating the fulcrum by the actuator of the primer feed unit. In addition, the actuation of the fulcrum pushes the at least one spring-loaded angle lever to place the unfired primer from the delivery end of the magazine in the spindle. The firearm non-firing condition further includes the step of rotating the breechblock carrier to close the breech ring end, by rotating the crankshaft assembly. The firearm non-firing condition further includes the step of attaining the firing condition of the primer feeding, firing and ejecting mechanism.
[0013] In yet another embodiment, the firing pin is a spring-loaded firing pin.
[0014] In one embodiment, the at least one spring-loaded angle lever possess an obtuse-angled geometry. Additionally, the magazine is clamped on the magazine holder by a spring-loaded pull lock.
[0015] In another embodiment, the safety lock unit is actuated by an external actuator.
[0016] In yet another embodiment, the rack is spring-loaded at one end. In addition, the spring-loaded rack assists in screwing and locking of the breech-screw in the firing condition, by exertion of spring force on the rack. Also, the spring-loaded rack prevents unscrewing of the breech-screw during recoil of the firearm.
[0017] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the following detailed description.
BRIEF DESCRIPTION OF DRAWINGS
[0018] Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
[0019] Figure 1 illustrates a primer feeding, firing and ejecting mechanism (100) and the non-firing condition of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments/instances/implementations of the present subject matter;
[0020] Figure 2 illustrates firing condition (200) of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments/instances/implementations of the present subject matter; and
[0021] Figure 3 illustrates ejection (300) of a fired primer (116) by primer extractor unit (114), of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments/instances/implementations of the present subject matter.
[0022] It should be noted that the accompanying figures are intended to present illustrations of exemplary embodiments of the present disclosure. These figures are not intended to limit the scope of the present disclosure.
DETAILED DESCRIPTION
[0023] Reference throughout the specification to “various embodiments,” or “some embodiments,” or “one embodiment,” or “an embodiment,” or “another embodiment” or “yet another embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in various embodiments,” “in some embodiments,” “in one embodiment,” or “in an embodiment” or “in one implementation” or “in an implementation” or “in another implementation” or “in yet another implementation” in places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0024] The words "comprising", "having", "containing", and "including", and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. For example, the term “an article” may include a plurality of articles unless the context clearly dictates otherwise. Although any methods similar or equivalent to those described herein may be used in the practice or testing of embodiments of the present disclosure, the exemplary methods are described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0025] Various modifications to the embodiment may be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art may readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein. The detailed description of the invention will be described hereinafter referring to accompanied drawings.
[0026] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting but rather to provide an understandable description of the invention.
[0027] Those with ordinary skill in the art will appreciate that the elements in the figures are illustrated for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated, relative to other elements in order to improve the understanding of the present invention. There may be additional components described in the foregoing application that are not depicted on one of the described drawings. In the event such a component is described, but not depicted in a drawing, the absence of such a drawing should not be considered as an omission of such design from the specification.
[0028] In the accompanying drawings components have been represented, showing only specific details that are pertinent for an understanding of the present invention so as not to obscure the disclosure with details that will be readily apparent to those with ordinary skill in the art having the benefit of the description herein.
[0029] In accordance with an embodiment of the present subject matter, referring to figure 1, 2 and 3, a primer feeding, firing and ejecting mechanism (100) is described herein. Figure 1 illustrates a primer feeding, firing and ejecting mechanism (100) and a non-firing condition of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments/implementations of the present subject matter. Figure 2 illustrates a firing condition (200) of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments /implementations of the present subject matter. Figure 3 illustrates ejection (300) of a fired primer (116) by primer extractor unit (114), of the primer feeding, firing and ejecting mechanism (100), in accordance with various embodiments /implementations of the present subject matter.
[0030] In general, primer feeding, firing and ejecting mechanism represent devices/apparatuses specifically designed for firearm automation. These devices are tailored to efficiently feed primer in the firearm, followed by detonating charge (or explosive) by ignition of the primer, followed by ejection of the primer from the firearm, in accordance user inputs. The firearm includes a barrel, into which a charge and a load (or projectile) are loaded. The firearm also includes a breechblock carrier pivoted to an end of a breech ring. Also, a spindle is mounted on a breech-screw (or breechblock). In addition, the breech-screw is rotationally mounted on a breechblock carrier such that the breechblock completely closes (or seals) one end of the breech ring. The spindle axis is in-line with the axis of the barrel.
[0031] In a non-limiting embodiment, a primer feeding, firing and ejecting mechanism (100) includes a magazine holder (102), a primer feed unit (104), a firing unit (110), a safety lock unit (112), and a primer extractor unit (114). In addition, the magazine holder (102) is configured to rotate against a pivot point. The magazine holder (102) holds a magazine. The magazine houses (or stores) a plurality of unfired primer (106). Additionally, the magazine holder (102) is supported by a biasing member (102c). In an example, the biasing member (102c) may be a spring (102c). In another example, the biasing member (102c) may be any suitable elastic device or elastic member. Further, the spring (102c) may be an extension spring, a gas spring or a mechanical spring. Furthermore, the primer feed unit (104) is configured for feeding the unfired primer (106) from the magazine to a spindle (108) of a firearm. The primer feed unit (104) includes an actuator (104a) and a lever arrangement (104b). The actuator (104a) is configured to drive the lever arrangement (104b) to feed the unfired primer (106) in the spindle (108) of the firearm. In addition, the firing unit (110) includes a firing pin (110a) configured for striking the unfired primer (106). Further, the safety lock unit (112) enables obstruction of the firing pin (110a) for misfire prevention in the firearm. Furthermore, the primer extractor unit (114) is configured for extraction of a fired primer (116) from the spindle (108).
[0032] In one embodiment, the pivot point is positioned on a breechblock carrier (118) of the firearm. In addition, the spindle (108) is mounted on a breech-screw (122) of the firearm. A breechblock carrier (118) is pivoted on a breech ring (120) of the firearm by a crankshaft assembly (128). Additionally, the crankshaft assembly (128) is rotated by a breech opening device.
[0033] In another embodiment, the breech-screw (122) is rotationally mounted on the breechblock carrier (118). Additionally, a sector gear is mounted on the breech- screw (122). Also, a rack is in mesh with the sector gear. The rack is housed in the breechblock carrier (118). The rack enables screwing or unscrewing of the breech-screw (122) on the breech ring (120). In addition, the rack is actuated by a sector gear in the crankshaft assembly (128). Further, about 45 degrees of rotation of the breech-screw (122) facilities screwing or unscrewing of the breech-screw (122). From this 45 degrees of rotation, for 38 degrees of rotation the magazine holder (102) is idle and for the remaining 7 degrees of rotation, the magazine holder (102) is rotated. This effect is enabled/obtained/achieved by engagement of stopper pins with the magazine holder (102). The stopper pins are mounted on the breech-screw (122).
[0034] In yet another embodiment, the primer feed unit (104) is mounted on the rack whereas the safety lock unit (112) is mounted on breechblock carrier (118). In addition, the lever arrangement (104b) includes at least one spring-loaded angle lever (124) pivotally mounted on the rack. Also, the lever arrangement (104b) includes a fulcrum (126) pivotally mounted on the breechblock carrier (118).
[0035] In yet another embodiment, the firearm firing condition includes the step of driving the rack. The driving of the rack rotates the breech-screw (122). The rotation of the breech-screw (122) facilitates screwing and locking of the breech-screw (122) on the breech ring (120). Additionally, the rotation of the breech-screw (122) rotates the magazine holder (102) for offsetting delivery end (102a) of the magazine from the spindle (108) axis. The driving of the rack also offsets the primer feed unit (104) and the delivery end (102a) of the magazine. The driving of the rack also aligns axis of the firing pin (110a) and the unfired primer (106). The above operations of rotating the breech-screw (122), offsetting the primer feed unit (104) and the delivery end (102a), and aligning axis of the firing pin (110a) and the unfired primer (106), occurs simultaneously. These operations are achieved simultaneously by driving the rack. The firearm firing condition further includes the steps of unlocking of the safety lock unit (112) to set free the firing pin (110a) of the firing unit (110). The firearm firing condition further includes the steps of striking the unfired primer (106) by the firing pin (110a) of the firing unit (110) to ignite a charge.
[0036] In one embodiment, the firearm non-firing condition includes the step of driving the rack. The driving of the rack rotates the breech-screw (122). The rotation of the breech-screw (122) facilitates unscrewing of the breech-screw (122) on the breech ring (120). In addition, the rotation of the breech-screw (122) facilitates ejection of the fired primer (116) from the spindle (108), by the primer extractor unit (114). Also, the rotation of the breech-screw (122) rotates the magazine holder (102) for aligning delivery end (102a) of the magazine to the spindle (108) axis. Additionally, the ejection of the fired primer (116) occurs before rotation of the magazine holder (102). The driving of the rack also aligns the primer feed unit (104) with the delivery end (102a) of the magazine. The above operations of rotating the breech-screw (122) and aligning the primer feed unit with the delivery end (102a) occurs simultaneously by driving the rack. The firearm non-firing condition further includes the step of rotating the breechblock carrier (118) to open the breech ring (120) end, by rotating the crankshaft assembly (128). The firearm non-firing condition further includes the step of feeding a charge in a barrel (121). The firearm non-firing condition further includes the step of actuating the fulcrum (126) by the actuator (104a) of the primer feed unit (104). In addition, the actuation of the fulcrum (126) pushes the at least one spring-loaded angle lever (124) to place the unfired primer (106) from the delivery end (102a) of the magazine in the spindle (108). The firearm non-firing condition further includes the step of rotating the breechblock carrier (118) to close the breech ring (120) end, by rotating the crankshaft assembly (128). The firearm non-firing condition further includes the step of attaining the firing condition of the primer feeding, firing and ejecting mechanism (100).
[0037] In another embodiment, referring to figure 1, illustrates feeding of the unfired primer (106), from the magazine, in the spindle (108) of the firearm. The unfired primer (106) is fed by actuation of the actuator (104a), in order to push the fulcrum (126) that further pushes the at least one spring-loaded angle lever (124). The tip of at least one spring-loaded angle lever (124) passes through the delivery end (102a) of the magazine in order to push the unfired primer (106) in the spindle (108). Referring to figure 2, the breechblock carrier (118) rotates and closes the breech ring (120) end, enabled by rotation of the crankshaft assembly (128). Furthermore, the breech-screw (122) rotates to lock the breech ring (120) end. In addition, the breech-screw (122) may include external threads and the breech ring (120) may include internal threads. The presence of threads may lock the breech-screw (122) in/on the breech ring (120). In addition, the rotation of the breech-screw (122), on the breech ring (120) end, descends the at least one spring-loaded angle lever (124) and the firing unit (110), in order to align the firing unit (110) with the spindle (108) axis. Also, the rotation of the breech-screw (122), on the breech ring (120) end, rotates the magazine and misaligns (or offsets) the delivery end (102a) of the magazine from the spindle (108). The alignment of the firing unit (110) with the spindle (108) axis is followed by disengagement of the safety lock unit (112) in order to set free (or disengage) the firing pin (110a). The disengagement of the safety lock unit (112) is followed by striking of the firing pin (110a) on the unfired primer (106). Referring to figure 3, it illustrates ejecting of the fired primer (116) from the spindle (108). Further, the striking will be followed by counter-rotation of the breech-screw (122) on the breech ring (120) end, in order to unscrew the breech-screw (122). Furthermore, the counter-rotation of the breech-screw (122), on the breech ring (120) end, ejects the fired primer (116) from the spindle (108), by the primer extractor unit (114). Also, the counter-rotation of the breech-screw (122), on the barrel (121) end, rotates the magazine holder (102) and aligns (or in-lines) the delivery end (102a) of the magazine on the spindle (108) axis. Additionally, the ejection of the fired primer (116) occurs before rotation of the magazine holder (102). In addition, the counter-rotation of the breech-screw (122), on the breech ring (120) end, ascends the at least one spring-loaded angle lever (124) and the firing unit (110), in order to align the at least one spring-loaded angle lever (124) with the spindle (108) axis. Further, the process of feeding the unfired primer by actuation of the actuator (104a), as described earlier, is repeated. The primer feeding, firing and ejecting mechanism (100) fully automates the process of firing and non-firing of the firearm, in order to eliminate human intervention.
[0038] In yet another embodiment, the firearm may include the breech opening device, which is primarily used to open/close the end of the breech ring (120), during firing and non-firing condition of the firearm. The breech opening device may include a secondary function of feeding the unfired primer (106) after the shot is loaded which is then fired using the firing unit (110). This unfired primer (106) then ignites the charge for detonation (or firing). Similarly, the breech mechanism may also include a secondary function of ejecting the fired primer (116) after the shot is fired. The present invention incorporates all the aforementioned operations/tasks. Thus, automating the entire process of feeding, firing and ejecting the primer, without any human intervention or supervision.
[0039] In one embodiment, the firearm may be a howitzer, an artillery gun, an ultralight howitzer, a gun mounted system, and the like.
[0040] In another embodiment, the actuator (104a) of the primer feed unit (104) is an electric actuator. In one implementation, the actuator (104a) may be pneumatic actuator, hydraulic actuator, mechanical actuator, piezoelectric actuator, shape memory alloy actuator, electro-magnetic actuator, and the like.
[0041] In yet another embodiment, the firing pin (110a) is a spring-loaded firing pin. In one implementation, the firing pin (110a) may be actuated by pneumatic system, hydraulic system, electronic system, electro-magnetic system, and the like.
[0042] In one embodiment, the fulcrum (126) possesses a right-angled geometry. In one implementation, the fulcrum (126) may be L-shaped. In another implementation, the fulcrum (126) may possess any geometry or shape. Also, at least one spring-loaded angle lever (124) possesses an obtuse-angled geometry. In one implementation, at least one spring-loaded angle lever (124) may be V-shaped. In another implementation, at least one spring-loaded angle lever (124) may possess any geometry or shape. In yet another implementation, the primer feed unit (104) may include two angle levers. The two angle levers may be a spring-loaded angle lever and a small lever pivoted on the end of the spring-loaded angle lever. The small lever may be stationary with respect to the spring-loaded angle lever, when the unfired primer is fed into the spindle, and it may rotate, in order to avoid collision with the delivery end (102a) of the magazine, when the spring-loaded lever returns to its original position. After the spring-loaded lever attains its original position, where no external force is applied, the small lever may counter-rotate to gain its stationary position. Additionally, the magazine is clamped on the magazine holder (102) by a spring-loaded pull lock (102b).
[0043] In another embodiment, the safety lock unit (112) is actuated by an external actuator. In one implementation, the external actuator may be pneumatic actuator, hydraulic actuator, mechanical actuator, piezoelectric actuator, shape memory alloy actuator, electro-magnetic actuator, and the like.
[0044] In yet another embodiment, the rack is spring-loaded at one end. The spring-loaded rack assists in screwing and locking of the breech-screw (122) in the firing condition by exertion of spring force on the rack. The spring-loaded rack prevents unscrewing of the breech-screw (122) during recoil of the firearm.
[0045] In yet another embodiment, the spring (102c), that supports the magazine holder (102), facilitates cushioning of the magazine rotation, while aligning it with the spindle (108) axis. The spring (102c) helps to bring back the magazine holder (102) to its specified position after the breech-screw (122) is closed/screwed on the breech ring (120). Also, the spring (102c) helps to make clear space for ejecting the fired primer (116) during next cycle of unfired primer (106) ejection.
[0046] The invention is further defined by at least the examples provided in the following items:
Item 1 A primer feeding, firing and ejecting mechanism (100), comprising:
a magazine holder (102) for holding a magazine, wherein the magazine holder (102) is configured to rotate against a pivot point, wherein the magazine houses a plurality of unfired primer (106), wherein the magazine holder (102) is supported by a biasing member (102c);
a primer feed unit (104) configured to feed the unfired primer (106) from the magazine to a spindle (108) of a firearm, wherein the primer feed unit (104) comprises an actuator (104a) and a lever arrangement (104b), wherein the actuator (104a) is configured to drive the lever arrangement (104b) for feeding the unfired primer (106) in the spindle (108);
a firing unit (110) comprising a firing pin (110a), wherein the firing pin (110a) is configured to strike the unfired primer (106);
a safety lock unit (112) is configured to obstruct the firing pin (110a) to prevent misfire in the firearm; and
a primer extractor unit (114) configured to extract a fired primer (116) from the spindle (108).
Item 2 The primer feeding, firing and ejecting mechanism (100) of item 1, wherein the pivot point is positioned on a breechblock carrier (118) of the firearm, wherein the spindle (108) is mounted on a breech-screw (122) of the firearm, wherein a breechblock carrier (118) is pivoted on a breech ring (120) of the firearm by a crankshaft assembly (128), wherein the crankshaft assembly (128) is rotated by a breech opening device.
Item 3 The primer feeding, firing and ejecting mechanism (100) of item 1 and 2, wherein the breech-screw (122) is rotationally mounted on the breechblock carrier (118), wherein a sector gear is mounted on the breech- screw (122), wherein a rack is in mesh with the sector gear, wherein the rack is housed in the breechblock carrier (118), wherein the rack enables screwing or unscrewing of the breech-screw (122) on the breech ring (120), wherein the rack is actuated by a sector gear of the crankshaft assembly (128), wherein 45 degrees rotation of the breech-screw (122) facilities screwing or unscrewing of the breech-screw (122), wherein for 38 degrees from the 45 degrees the magazine holder (102) is idle and for 7 degrees from the 45 degrees the magazine holder (102) is rotated, enabled by engagement of stopper pins with the magazine holder (102), wherein the stopper pins are mounted on the breech-screw (122).
Item 4 The primer feeding, firing and ejecting mechanism (100) of item 1-3, wherein the primer feed unit (104) is mounted on the rack whereas the safety lock unit (112) is mounted on the breechblock carrier (118), wherein the lever arrangement (104b) comprises at least one spring-loaded angle lever (124) pivotally mounted on the rack, wherein the lever arrangement (104b) comprises a fulcrum (126) pivotally mounted on the breechblock carrier (118).
Item 5 The primer feeding, firing and ejecting mechanism (100) of item 1-4, wherein a firearm firing condition comprises the steps of:
driving the rack to simultaneously,
rotate the breech-screw (122), wherein rotation of the breech-screw (122) facilitates screwing and locking of the breech-screw (122) in the breech ring (120), wherein the rotation of the breech-screw (122) rotates the magazine holder (102) for offsetting delivery end (102a) of the magazine from the spindle (108) axis,
offset the primer feed unit (104) and the delivery end (102a) of the magazine, and
align axis of the firing pin (110a) and the unfired primer (106);
unlocking of the safety lock unit (112) to set free the firing pin (110a) of the firing unit (110); and
striking the unfired primer (106) by the firing pin (110a) of the firing unit (110) to ignite a charge.
Item 6 The primer feeding, firing and ejecting mechanism (100) as claimed in item 1-5, wherein a firearm non-firing condition comprises the steps of:
driving the rack to simultaneously,
rotate the breech-screw (122),
wherein the rotation of the breech-screw (122) facilitates unscrewing of the breech-screw (122) on the breech ring (120), wherein the rotation of the breech-screw (122) facilitates ejection of the fired primer (116) from the spindle (108) by the primer extractor unit (114), wherein the rotation of the breech-screw (122) rotates the magazine holder (102) for aligning delivery end (102a) of the magazine to the spindle (108) axis, wherein the ejection of the fired primer (116) occurs before rotation of the magazine holder (102), and
align the primer feed unit (104) with the delivery end (102a) of the magazine;
rotating the breechblock carrier (118) to open the breech ring (120) end, by rotating the crankshaft assembly (128);
feeding a charge in a barrel (121);
actuating the fulcrum (126) by the actuator (104a) of the primer feed unit (104), wherein actuation of the fulcrum (126) pushes the at least one spring-loaded angle lever (124) to place the unfired primer (106) from the delivery end (102a) of the magazine in the spindle (108);
rotating the breechblock carrier (118) to close the breech ring (120) end, by rotating the crankshaft assembly (128); and
attaining the firing condition of the primer feeding, firing and ejecting mechanism (100).
Item 7 The primer feeding, firing and ejecting mechanism (100) of item 1-6, wherein the firing pin (110a) is a spring-loaded firing pin.
Item 8 The primer feeding, firing and ejecting mechanism (100) as claimed in item 1-6, wherein the at least one spring-loaded angle lever (124) possesses an obtuse-angled geometry, wherein the magazine is clamped on the magazine holder (102) by a spring-loaded pull lock (102b).
Item 9 The primer feeding, firing and ejecting mechanism (100) of item 1-6, wherein the safety lock unit (112) is actuated by an external actuator.
Item 10 The primer feeding, firing and ejecting mechanism (100) of item 1-9, wherein the rack is spring-loaded at one end, wherein the spring-loaded rack assists in screwing and locking of the breech-screw (122) in the firing condition by exertion of spring force on the rack, wherein the spring-loaded rack prevents unscrewing of the breech-screw (122) during recoil of the firearm.
[0047] The presently disclosed the primer feeding, firing and ejecting mechanism (100) may have the following advantages:
• primer ejection, cocking of firing pin, primer feeding, firing happens automatically. Improved efficiency.
• manual intervention and fatigue reduction.
• increased firing rate, due to automation.
• enhanced safety, from operational point of view.
• light weight mechanism.
• simplified design.
• ease for maintenance, due to minimum maintenance requirements.
• cost-effective solution.
[0048] The foregoing description shall be interpreted as illustrative and not in any limiting sense. A person of ordinary skill in the art would understand that certain modifications could come within the scope of this disclosure.
[0049] The embodiments, examples, and alternatives of the preceding paragraphs or the description, including any of their various aspects or respective individual feature(s), may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments unless such features are incompatible.
, Claims:WE CLAIM:
1. A primer feeding, firing and ejecting mechanism (100), comprising:
a magazine holder (102) for holding a magazine, wherein the magazine holder (102) is configured to rotate against a pivot point, wherein the magazine houses a plurality of unfired primer (106), wherein the magazine holder (102) is supported by a biasing member (102c);
a primer feed unit (104) configured to feed the unfired primer (106) from the magazine to a spindle (108) of a firearm, wherein the primer feed unit (104) comprises an actuator (104a) and a lever arrangement (104b), wherein the actuator (104a) is configured to drive the lever arrangement (104b) for feeding the unfired primPer (106) in the spindle (108);
a firing unit (110) comprising a firing pin (110a), wherein the firing pin (110a) is configured to strike the unfired primer (106);
a safety lock unit (112) is configured to obstruct the firing pin (110a) to prevent misfire in the firearm; and
a primer extractor unit (114) configured to extract a fired primer (116) from the spindle (108).
2. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1, wherein the pivot point is positioned on a breechblock carrier (118) of the firearm, wherein the spindle (108) is mounted on a breech-screw (122) of the firearm, wherein a breechblock carrier (118) is pivoted on a breech ring (120) of the firearm by a crankshaft assembly (128), wherein the crankshaft assembly (128) is rotated by a breech opening device.
3. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1 and 2, wherein the breech-screw (122) is rotationally mounted on the breechblock carrier (118), wherein a sector gear is mounted on the breech- screw (122), wherein a rack is in mesh with the sector gear, wherein the rack is housed in the breechblock carrier (118), wherein the rack enables screwing or unscrewing of the breech-screw (122) on the breech ring (120), wherein the rack is actuated by a sector gear of the crankshaft assembly (128), wherein about 45 degrees rotation of the breech-screw (122) facilities screwing or unscrewing of the breech-screw (122), wherein for about 38 degrees from the 45 degrees the magazine holder (102) is idle and for 7 degrees from the 45 degrees the magazine holder (102) is rotated, enabled by engagement of stopper pins with the magazine holder (102), wherein the stopper pins are mounted on the breech-screw (122).
4. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-3, wherein the primer feed unit (104) is mounted on the rack whereas the safety lock unit (112) is mounted on the breechblock carrier (118), wherein the lever arrangement (104b) comprises at least one spring-loaded angle lever (124) pivotally mounted on the rack, wherein the lever arrangement (104b) comprises a fulcrum (126) pivotally mounted on the breechblock carrier (118).
5. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-4, wherein a firearm firing condition comprises the steps of:
driving the rack to simultaneously,
rotate the breech-screw (122), wherein rotation of the breech-screw (122) facilitates screwing and locking of the breech-screw (122) on the breech ring (120), wherein the rotation of the breech-screw (122) rotates the magazine holder (102) for offsetting delivery end (102a) of the magazine from the spindle (108) axis,
offset the primer feed unit (104) and the delivery end (102a) of the magazine, and
align axis of the firing pin (110a) and the unfired primer (106);
unlocking of the safety lock unit (112) to set free the firing pin (110a) of the firing unit (110); and
striking the unfired primer (106) by the firing pin (110a) of the firing unit (110) to ignite a charge.
6. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-5, wherein a firearm non-firing condition comprises the steps of:
driving the rack to simultaneously,
rotate the breech-screw (122),
wherein the rotation of the breech-screw (122) facilitates unscrewing of the breech-screw (122) on the breech ring (120), wherein the rotation of the breech-screw (122) facilitates ejection of the fired primer (116) from the spindle (108) by the primer extractor unit (114), wherein rotation of the breech-screw (122) rotates the magazine holder (102) for aligning delivery end (102a) of the magazine to the spindle (108) axis, wherein the ejection of the fired primer (116) occurs before rotation of the magazine holder (102), and
align the primer feed unit (104) with the delivery end (102a) of the magazine;
rotating the breechblock carrier (118) to open the breech ring (120) end, by rotating the crankshaft assembly (128);
feeding a charge in a barrel (121);
actuating the fulcrum (126) by the actuator (104a) of the primer feed unit (104), wherein actuation of the fulcrum (126) pushes the at least one spring-loaded angle lever (124) to place the unfired primer (106) from the delivery end (102a) of the magazine in the spindle (108);
rotating the breechblock carrier (118) to close the breech ring (120) end, by rotating the crankshaft assembly (128); and
attaining the firing condition of the primer feeding, firing and ejecting mechanism (100).
7. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-6, wherein the firing pin (110a) is a spring-loaded firing pin.
8. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-6, wherein the at least one spring-loaded angle lever (124) possesses an obtuse-angled geometry, wherein the magazine is clamped on the magazine holder (102) by a spring-loaded pull lock (102b).
9. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-6, wherein the safety lock unit (112) is actuated by an external actuator.
10. The primer feeding, firing and ejecting mechanism (100) as claimed in claim 1-9, wherein the rack is spring-loaded at one end, wherein spring-loaded rack assists in screwing and locking of the breech-screw (122) in the firing condition by exertion of spring force on the rack, wherein the spring-loaded rack prevents unscrewing of the breech-screw (122) during recoil of the firearm.