US20100288112A1 - Support member for supporting shell into breech-loading weapon barrel, and method - Google Patents
Support member for supporting shell into breech-loading weapon barrel, and method Download PDFInfo
- Publication number
- US20100288112A1 US20100288112A1 US12/863,756 US86375609A US2010288112A1 US 20100288112 A1 US20100288112 A1 US 20100288112A1 US 86375609 A US86375609 A US 86375609A US 2010288112 A1 US2010288112 A1 US 2010288112A1
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- US
- United States
- Prior art keywords
- tail
- mortar shell
- support member
- mortar
- spring force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F1/00—Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannons; Harpoon guns
- F41F1/06—Mortars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
- F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction
- F41A9/58—Cartridge stops; Cartridge positioners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
- F41F3/052—Means for securing the rocket in the launching apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
- F42B30/08—Ordnance projectiles or missiles, e.g. shells
- F42B30/10—Mortar projectiles
Definitions
- the invention relates to a support member according to the preamble of claim 1 , and particularly to a support member for supporting a mortar shell into a breech-loading weapon barrel, the support member comprising a support element with an edge flange and a firing mechanism for firing the actual primer of the mortar shell and further comprising connecting means for attaching the support element to a tail of the mortar shell.
- the invention further relates to a method according to the preamble of claim 10 for attaching a support member to a mortar shell, the method comprising arranging in the tail of the mortar shell a support member which comprises a support element; and attaching the support member to the tail of the mortar shell.
- a mortar can be arranged on a movable base, such as an armored vehicle, allowing the mortar to be moved conveniently from one place to another and, on the other hand, allowing it to be rapidly moved from the emplacement into safety.
- a movable base such as an armored vehicle
- the problem is that the mortar shell does not stay in place in the smoothbore barrel of the mortar, but may slide forward in the barrel, so that it can no longer be fired.
- U.S. Pat. No. 5,503,080 discloses a support member attachable by means of friction to guiding wings in the mortar shell tail.
- the solution taught by the publication has the problem of requiring extremely accurate dimensions of both the tail of the projectile and the support member itself in order for it to function in at least satisfactorily reliable manner.
- An object of the invention is thus to provide a support member, and a method for attaching a support member to a mortar shell.
- the object of the invention is achieved with a support member according to the characterizing part of claim 1 , characterized in that the connecting means for attaching the support element to the tail of the mortar shell comprise at least one flexible part arranged to be attached to the tail of the mortar shell by means of spring force.
- the object of the invention is further achieved with a method according to claim 10 , characterized by attaching the support member to the mortar shell tail and/or to one or more guiding fins forming a part of the mortar shell tail and/or to a counterpart provided in the mortar shell tail by means of one or more flexible part in such a way that when receiving the mortar shell tail, the flexible part directs spring force at the outer periphery of the mortar shell tail and/or at one or more guiding fins forming a part of the mortar shell tail and/or at the counterpart provided at the mortar shell tail.
- the invention is based on a mortar shell being attached to a support member with connecting means which direct spring force at the mortar shell tail.
- the connecting means comprise a flexible part by means of which the mortar shell tail is attached to the support member.
- the flexible part may, in accordance with the invention, receive the mortar shell tail in such a way that it directs spring force at the outer periphery of the mortar shell tail or at one or more guiding fins forming a part of the mortar shell tail or, at both the outer periphery of the mortar shell tail and one or more guiding fins.
- the mortar shell tail may be provided with a counterpart to which the flexible part is attached by means of spring force.
- attachment of the support member to the mortar shell tail is based on spring force, whereby the attachment is more reliable than breech based on friction. Further, possible dimensional variance caused by the manufacture of the mortar shell does not affect the magnitude of the attachment forces and the staying in place of the support member as critically as in a friction breech solution. In the solution according to the invention, it is relatively easy to control the attachment forces. Further, it is an advantage of the invention that the support member can be attached to the mortar shell tail easily and quickly even in difficult conditions.
- the support member is provided with a spring ring arranged to receive the mortar shell tail.
- the spring ring When receiving the mortar shell tail, the spring ring yields, simultaneously directing spring force at the mortar shell tail.
- the spring ring may be provided in such a way that spring force is directed at the outer periphery of the mortar shell tail.
- the spring ring may comprise one or more slots for receiving a guiding fin forming a part of the mortar shell tail in such a way that the guiding fin to be received into the slot makes the spring ring yield, whereby the slot directs spring force at the guiding fin to attach the mortar shell to the support member.
- the support member is provided with a laminated ring which is arranged to receive the mortar shell tail.
- the laminated ring has been provided in such a way that it directs spring force at the outer periphery of the mortar shell tail.
- the mortar shell tail is arranged to be received into a space generated by the laminated ring such that the laminated ring yields at least partly when the mortar shell tail is received, and directs spring force at the mortar shell tail.
- the laminated ring is arranged to receive one or more guiding fins forming a part of the mortar shell tail such that the laminated ring yields at least partly when receiving one or more guiding fins, and directs spring force at the guiding fin received.
- the support member is provided with a flexible connecting part which is arranged to receive a counterpart provided in the mortar shell tail.
- the flexible connecting part may be, for example, a flexible sleeve-like connecting part arranged to yield in the direction transverse to its axis when receiving the counterpart, and to direct spring force at the counterpart to attach the mortar shell to the support member.
- FIG. 1 shows schematically a mortar shell supported into a weapon barrel by means of a support member according to an embodiment of the invention
- FIG. 2 shows schematically an embodiment according to the present invention for attaching a support member to a mortar shell by means of a spring ring;
- FIG. 3 shows schematically a second embodiment according to the present invention for attaching a support member to a mortar shell by means of a spring ring;
- FIG. 4 shows schematically a cross-sectional view of an embodiment according to the present invention for attaching a support member to a mortar shell by means of a laminated ring;
- FIG. 5 shows schematically the laminated ring according to FIG. 4 ;
- FIG. 6 shows schematically an embodiment according to the present invention for attaching a support member to a mortar shell by means of a flexible part and a counterpart provided in the mortar shell;
- FIG. 7 shows the embodiment according to FIG. 6 when the support member has been attached to the mortar shell by means of a flexible part.
- FIG. 1 shows schematically a mortar shell 1 supported into a barrel 2 of a weapon by means of a support member 6 according to an embodiment of the invention.
- the mortar shell 1 is arranged into the barrel 2 of a breech-loading weapon.
- the weapon may be a mortar in which the inner surface of the barrel 2 is substantially smooth.
- the rear part of the mortar shell 1 comprises a tail tube 3 and a tail 4 .
- the tail 4 comprises one or typically more guiding fins 5 for affecting the trajectory of the mortar shell 1 .
- the details of the construction of the mortar shell 1 may deviate from the structure shown in the figure. For the sake of clarity, the breech of the weapon and other details are not shown.
- a support member 6 according to the invention is attached to the tail 4 for keeping the mortar shell 1 in place in the barrel 2 until it is fired.
- An outer casing 12 in a support element 8 forming a part of the support member 6 is dimensioned such that at least part of the tail 4 of the mortar shell 1 can become placed inside it.
- An edge flange 7 in the support member 6 prevents the mortar shell 1 from moving forward in the barrel 2 when the barrel 2 is directed horizontally, or even if the barrel 2 pointed downward.
- the support member 6 is dimensioned to tolerate not only the load caused by the mass of the mortar shell 1 but also any forces caused by vibration and acceleration.
- the support element 8 further comprises connecting means 10 by means of which the mortar shell 1 is attached to the support member 6 .
- the connecting means 10 may be attached to the support element 8 for instance with a threaded joint or another mechanical joint which is preferably openable and closable optionally. Alternatively, the connecting means 10 may be attached to the support element 8 in a fixed manner.
- FIG. 2 shows schematically an embodiment according to the invention, where the connecting means 10 provided in the support element 8 comprise a spring ring 13 .
- the spring ring 13 is formed in such a way that it is capable of receiving the mortar shell tail 4 .
- the spring ring 13 is formed in such a way that it is capable of receiving particularly that end of the tail tube 3 of the tail 4 that is far from the mortar shell 1 .
- the spring ring 13 thus forms an opening in which the end of the tail tube 3 can be placed.
- the opening of the spring ring 13 has been provided such that when the tail tube 3 becomes placed in the opening, the spring ring 13 yields and becomes stressed, directing spring force at the outer periphery or outer surface 14 of the tail tube 3 , i.e. the mortar shell tail, which spring force makes the mortar shell 1 attach to the support member 6 .
- the spring ring 13 serves as a flexible element directing spring force at the tail 4 of the mortar shell 1 to attach the mortar shell 1 to the support member 6 .
- the spring ring 13 may comprise slots arranged to receive guiding fins 5 forming a part of the tail 4 of the mortar shell 1 .
- the slots allow the end of the tail tube 3 to be placed against the bottom of the support element 8 .
- the spring ring 13 may be further shaped in such a way that the mortar shell 1 can be easily pressed into an opening delimited by the spring ring 13 but that pulling it out requires considerably more force in order for the joint not to open before firing.
- the spring ring 13 directs spring force at the outer periphery 14 of the mortar shell tail 4 in areas between the guiding fins 5 .
- the opening of the spring ring 13 has been made smaller than the diameter of the tail tube 3 of the mortar shell 1 , whereby, when the tail tube 3 is pushed into the spring ring 13 , its spring members 18 yield in such a way that the opening of the spring ring 13 increases in size.
- the spring members 18 become stressed and direct thus spring force at the outer periphery 14 of the tail tube 3 of the tail 4 of the mortar shell 1 placed in the opening 14 , as shown in FIG. 2 . Further, in accordance with FIG.
- these spring members 18 are shaped such that their ends have been bent toward the bottom of the support element 8 , whereby the tail 4 of the mortar shell can be easily placed in the spring ring 13 but due to the effect of the spring force generated, removing the mortar shell 1 from the spring ring 13 requires considerably more force.
- the slots may be provided such that they yield when receiving the guiding fins 5 , whereby they become stressed and direct spring force at the guiding fins 5 .
- the slots open, directing spring force at the guiding fin 5 surfaces which are in the direction of the longitudinal axis of the mortar shell 1 .
- the spring members 18 may be shaped such that the tail 4 of the mortar shell can be easily placed in the spring ring 13 but that due to the spring force generated, removing the mortar shell 1 from the spring ring 13 requires considerably more force.
- the slots of the spring ring 13 receive the guiding fins 5 relatively easily but, at the same time, the spring ring 13 directs spring force at the guiding fins 5 , due to which removing the mortar shell 1 from the spring ring 13 requires considerably more force.
- the spring ring 13 may be provided such that the preceding embodiments are combined, in which case placing the tail tube 3 in the opening of the spring ring 13 generates spring force directed at the outer surface 14 of the tail 4 and, at the same time, placing the guiding fins 5 in the slots 16 generates spring force directed at the guiding fins 5 .
- the spring ring 13 may be any type of ring capable of generating spring force directed at the tail 4 of the mortar shell 1 when receiving at least part of the tail 4 of the mortar shell 1 .
- FIG. 4 shows another embodiment of the present invention in which the connecting means comprise one or more laminated rings 20 .
- the connecting means of the support member 8 comprise an attachment sleeve 21 and a tension sleeve 23 joined to it.
- the attachment sleeve 21 may be attached to the support member 8 for example with threads or in a fixed manner, or in another mechanical manner.
- two laminated rings 20 have been placed in the space inside the tension sleeve 23 .
- One or more support plates or base plates may be placed (not shown) may be placed between the laminated rings or on the front and/or rear side.
- the diameter of the hole of the tension sleeve 23 is such that the tension sleeve 23 is capable of receiving the tail tube 3 of the mortar shell 1 or a head part 25 of the tail tube.
- One embodiment of the laminated ring 20 is shown in FIG. 5 .
- the diameter of an opening 24 of the laminated ring 20 inside the tension sleeve 23 is smaller, at least slightly, than the outer diameter of the tail tube 3 of the mortar shell 1 or the outer diameter of the head part 25 .
- the laminated ring 20 and particularly its lamellas 22 yield and direct spring force at the tail tube 3 of the mortar shell 1 or at the head part 25 , the spring force attaching the mortar shell 1 to the support member 8 .
- the diameter of the openings of the support plates and base plates substantially corresponds to the outer diameter of the tail tube 3 of the mortar shell 1 or the outer diameter of the head part 25 , whereby they do not direct any resistance or force at the mortar shell.
- the connecting means 10 preferably comprise one or more laminated rings 20 , depending on the magnitude of the desired spring force or on the force required for attaching the mortar shell.
- the inner periphery of the laminated ring 20 is, in accordance with FIG. 5 , divided into adjacent lamellas 22 capable of yielding.
- the number of lamellas 22 and thus the length in the direction of the periphery and in the direction of the radius of the periphery may vary according to the need so that the desired spring force can be generated.
- the lamella rings 20 may be manufactured of a steel plate by cutting or in another corresponding manner, or of another corresponding material.
- FIG. 6 shows schematically an embodiment according to the present invention, where the connecting means 10 of the support element 8 comprise a flexible part 30 .
- a counterpart 32 is provided at the end of the tail tube 3 of the tail 4 of the mortar shell 1 .
- the flexible part 30 is arranged to receive the counterpart 32 in such a way that the flexible part 30 yields, directing spring force at the counterpart received for attaching the mortar shell 1 to the support member 6 .
- the flexible part is a sleeve-like connecting part 30 caused to yield in a direction transverse to its longitudinal axis when receiving the counterpart 32 .
- the counterpart 32 is provided at the tail 4 of the mortar shell and particularly at the end of the tail tube 3 in accordance with FIG. 6 .
- the connecting part 30 is comprised of several flexible claw-like parts arranged on a circular arch to provide a sleeve-like connecting part.
- the sleeve-like connecting part 30 receives the counterpart 32 to the inside of it.
- the counterpart 32 comprises a cone opening away from the tail 4 of the mortar shell. This cone facilitates placement of the mortar shell 1 correctly in the support member 6 . Further, the cone of the counterpart 32 is pressed against the inner walls of the sleeve-like connecting part 30 as the counterpart 32 becomes placed inside the connecting part 30 . Pressing and yielding, the connecting part 30 becomes stressed and simultaneously directs spring force at the outer surface of the counterpart 32 being placed inside it to attach the mortar shell to the support member 6 .
- the counterpart 32 is dimensioned such that its outer diameter is at least partly greater than the inner diameter of the connecting part 30 , whereby the connecting part 30 is forced to yield when the counterpart 32 becomes placed inside it.
- the connecting part 30 is pushed into the inside of the counterpart 32 so far that the upper surface of the connecting part 30 passes the cone of the connecting part 32 .
- the sleeve-like connecting part 30 is tightly placed inside the counterpart 32 and does not tend to get out.
- the conical shape of the counterpart 32 also allows the counterpart to snap into place inside the connecting part 30 , as shown in FIG. 7 , whereby the mortar shell is not easily detached from the support member 8 .
- the counterpart 32 may be provided at the end of the tail tube 3 of the tail 4 of the mortar shell, in which case it is an extension of the tail tube 3 or a part of the tail tube 3 .
- the counterpart 32 may simply be merely an end of the tail tube 3 , left hollow, whereby it forms the counterpart 32 .
- the spring force directed at the counterpart 32 by the connecting part 30 can be further increased by means of one or more spring elements (not shown) installed in the connecting part.
- the spring elements may be individual springs placed on the outer surface of the connecting part 30 , or alternatively a spring may be placed around the outer periphery of the connecting part 30 .
- the counterpart 32 may be shaped and provided in such a way that it becomes placed around the connecting part 30 , whereby the spring force of the flexible connecting part 30 is directed at the inner surface of the counterpart 32 .
- the counterpart 32 may be the head part 25 of the tail 4 of the mortar shell 1 .
- both the spring ring receiving the mortar shell tail or a part of to the inside of it and the flexible connecting part receiving around it the counterpart provided at the tail may be shaped and modified in a plurality of ways.
- the mortar shell is attachable to the support member by means of spring force.
- the spring force is generated by a flexible part provided in the support element and arranged to yield when the mortar shell is attached to the support member.
- the mortar shell can be attached to the support member 8 by means of two or more embodiments described above.
Abstract
The invention relates to a support member (6) for supporting a mortar shell (1) into a breech-loading weapon barrel. The support member (6) comprises a support element (8) with an edge flange (7) and a firing mechanism for firing the actual primer of the mortar shell (1) and further comprising connecting means (10) for attaching the support element (8) to a tail (4) of the mortar shell (1). The connecting means (10) for attaching the support element (8) to the tail (4) of the mortar shell (1) comprise at least one flexible part (13, 20, 30) arranged to be attached to the tail (4) of the mortar shell (1) by means of spring force.
Description
- The invention relates to a support member according to the preamble of
claim 1, and particularly to a support member for supporting a mortar shell into a breech-loading weapon barrel, the support member comprising a support element with an edge flange and a firing mechanism for firing the actual primer of the mortar shell and further comprising connecting means for attaching the support element to a tail of the mortar shell. The invention further relates to a method according to the preamble ofclaim 10 for attaching a support member to a mortar shell, the method comprising arranging in the tail of the mortar shell a support member which comprises a support element; and attaching the support member to the tail of the mortar shell. - A mortar can be arranged on a movable base, such as an armored vehicle, allowing the mortar to be moved conveniently from one place to another and, on the other hand, allowing it to be rapidly moved from the emplacement into safety. When the intention is to use a mortar for firing vertically or downward, the problem is that the mortar shell does not stay in place in the smoothbore barrel of the mortar, but may slide forward in the barrel, so that it can no longer be fired. U.S. Pat. No. 5,503,080 discloses a support member attachable by means of friction to guiding wings in the mortar shell tail. The solution taught by the publication has the problem of requiring extremely accurate dimensions of both the tail of the projectile and the support member itself in order for it to function in at least satisfactorily reliable manner.
- An object of the invention is thus to provide a support member, and a method for attaching a support member to a mortar shell. The object of the invention is achieved with a support member according to the characterizing part of
claim 1, characterized in that the connecting means for attaching the support element to the tail of the mortar shell comprise at least one flexible part arranged to be attached to the tail of the mortar shell by means of spring force. The object of the invention is further achieved with a method according toclaim 10, characterized by attaching the support member to the mortar shell tail and/or to one or more guiding fins forming a part of the mortar shell tail and/or to a counterpart provided in the mortar shell tail by means of one or more flexible part in such a way that when receiving the mortar shell tail, the flexible part directs spring force at the outer periphery of the mortar shell tail and/or at one or more guiding fins forming a part of the mortar shell tail and/or at the counterpart provided at the mortar shell tail. - Preferred embodiments of the invention are disclosed in the dependent claims.
- The invention is based on a mortar shell being attached to a support member with connecting means which direct spring force at the mortar shell tail. In other words, the connecting means comprise a flexible part by means of which the mortar shell tail is attached to the support member. The flexible part may, in accordance with the invention, receive the mortar shell tail in such a way that it directs spring force at the outer periphery of the mortar shell tail or at one or more guiding fins forming a part of the mortar shell tail or, at both the outer periphery of the mortar shell tail and one or more guiding fins. Alternatively, the mortar shell tail may be provided with a counterpart to which the flexible part is attached by means of spring force.
- In the invention, attachment of the support member to the mortar shell tail is based on spring force, whereby the attachment is more reliable than breech based on friction. Further, possible dimensional variance caused by the manufacture of the mortar shell does not affect the magnitude of the attachment forces and the staying in place of the support member as critically as in a friction breech solution. In the solution according to the invention, it is relatively easy to control the attachment forces. Further, it is an advantage of the invention that the support member can be attached to the mortar shell tail easily and quickly even in difficult conditions.
- In accordance with an embodiment of the invention, the support member is provided with a spring ring arranged to receive the mortar shell tail. When receiving the mortar shell tail, the spring ring yields, simultaneously directing spring force at the mortar shell tail. The spring ring may be provided in such a way that spring force is directed at the outer periphery of the mortar shell tail. Alternatively, the spring ring may comprise one or more slots for receiving a guiding fin forming a part of the mortar shell tail in such a way that the guiding fin to be received into the slot makes the spring ring yield, whereby the slot directs spring force at the guiding fin to attach the mortar shell to the support member.
- In another embodiment of the present invention, the support member is provided with a laminated ring which is arranged to receive the mortar shell tail. The laminated ring has been provided in such a way that it directs spring force at the outer periphery of the mortar shell tail. In other words, the mortar shell tail is arranged to be received into a space generated by the laminated ring such that the laminated ring yields at least partly when the mortar shell tail is received, and directs spring force at the mortar shell tail. Alternatively, the laminated ring is arranged to receive one or more guiding fins forming a part of the mortar shell tail such that the laminated ring yields at least partly when receiving one or more guiding fins, and directs spring force at the guiding fin received.
- In yet another embodiment of the invention, the support member is provided with a flexible connecting part which is arranged to receive a counterpart provided in the mortar shell tail. The flexible connecting part may be, for example, a flexible sleeve-like connecting part arranged to yield in the direction transverse to its axis when receiving the counterpart, and to direct spring force at the counterpart to attach the mortar shell to the support member.
- The invention will now be described in greater detail in connection with preferred embodiments, with reference to the attached drawings, of which:
-
FIG. 1 shows schematically a mortar shell supported into a weapon barrel by means of a support member according to an embodiment of the invention; -
FIG. 2 shows schematically an embodiment according to the present invention for attaching a support member to a mortar shell by means of a spring ring; -
FIG. 3 shows schematically a second embodiment according to the present invention for attaching a support member to a mortar shell by means of a spring ring; -
FIG. 4 shows schematically a cross-sectional view of an embodiment according to the present invention for attaching a support member to a mortar shell by means of a laminated ring; -
FIG. 5 shows schematically the laminated ring according toFIG. 4 ; and -
FIG. 6 shows schematically an embodiment according to the present invention for attaching a support member to a mortar shell by means of a flexible part and a counterpart provided in the mortar shell; and -
FIG. 7 shows the embodiment according toFIG. 6 when the support member has been attached to the mortar shell by means of a flexible part. -
FIG. 1 shows schematically amortar shell 1 supported into a barrel 2 of a weapon by means of asupport member 6 according to an embodiment of the invention. - The
mortar shell 1 is arranged into the barrel 2 of a breech-loading weapon. The weapon may be a mortar in which the inner surface of the barrel 2 is substantially smooth. The rear part of themortar shell 1 comprises atail tube 3 and atail 4. Thetail 4 comprises one or typically more guidingfins 5 for affecting the trajectory of themortar shell 1. The details of the construction of themortar shell 1 may deviate from the structure shown in the figure. For the sake of clarity, the breech of the weapon and other details are not shown. - A
support member 6 according to the invention is attached to thetail 4 for keeping themortar shell 1 in place in the barrel 2 until it is fired. Anouter casing 12 in asupport element 8 forming a part of thesupport member 6 is dimensioned such that at least part of thetail 4 of themortar shell 1 can become placed inside it. Anedge flange 7 in thesupport member 6 prevents themortar shell 1 from moving forward in the barrel 2 when the barrel 2 is directed horizontally, or even if the barrel 2 pointed downward. Thesupport member 6 is dimensioned to tolerate not only the load caused by the mass of themortar shell 1 but also any forces caused by vibration and acceleration. Thesupport element 8 further comprises connectingmeans 10 by means of which themortar shell 1 is attached to thesupport member 6. - The
connecting means 10 may be attached to thesupport element 8 for instance with a threaded joint or another mechanical joint which is preferably openable and closable optionally. Alternatively, the connecting means 10 may be attached to thesupport element 8 in a fixed manner. -
FIG. 2 shows schematically an embodiment according to the invention, where the connectingmeans 10 provided in thesupport element 8 comprise aspring ring 13. Thespring ring 13 is formed in such a way that it is capable of receiving themortar shell tail 4. In accordance withFIG. 2 , thespring ring 13 is formed in such a way that it is capable of receiving particularly that end of thetail tube 3 of thetail 4 that is far from themortar shell 1. Thespring ring 13 thus forms an opening in which the end of thetail tube 3 can be placed. The opening of thespring ring 13 has been provided such that when thetail tube 3 becomes placed in the opening, thespring ring 13 yields and becomes stressed, directing spring force at the outer periphery orouter surface 14 of thetail tube 3, i.e. the mortar shell tail, which spring force makes themortar shell 1 attach to thesupport member 6. In other words, thespring ring 13 serves as a flexible element directing spring force at thetail 4 of themortar shell 1 to attach themortar shell 1 to thesupport member 6. - The
spring ring 13 may comprise slots arranged to receive guidingfins 5 forming a part of thetail 4 of themortar shell 1. The slots allow the end of thetail tube 3 to be placed against the bottom of thesupport element 8. Thespring ring 13 may be further shaped in such a way that themortar shell 1 can be easily pressed into an opening delimited by thespring ring 13 but that pulling it out requires considerably more force in order for the joint not to open before firing. In accordance withFIG. 2 , thespring ring 13 directs spring force at theouter periphery 14 of themortar shell tail 4 in areas between the guidingfins 5. Between the slots or other corresponding openings, there extend claw-like spring members 18 or other corresponding tongue-like flexible parts in thespring ring 13, which parts yield when receiving thetail 4 of the mortar shell. In other words, the opening of thespring ring 13 has been made smaller than the diameter of thetail tube 3 of themortar shell 1, whereby, when thetail tube 3 is pushed into thespring ring 13, itsspring members 18 yield in such a way that the opening of thespring ring 13 increases in size. At the same time, thespring members 18 become stressed and direct thus spring force at theouter periphery 14 of thetail tube 3 of thetail 4 of themortar shell 1 placed in theopening 14, as shown inFIG. 2 . Further, in accordance withFIG. 2 , thesespring members 18 are shaped such that their ends have been bent toward the bottom of thesupport element 8, whereby thetail 4 of the mortar shell can be easily placed in thespring ring 13 but due to the effect of the spring force generated, removing themortar shell 1 from thespring ring 13 requires considerably more force. - In an alternative embodiment of the
spring ring 13, shown inFIG. 3 , the slots may be provided such that they yield when receiving the guidingfins 5, whereby they become stressed and direct spring force at the guidingfins 5. In other words, when receiving the guidingfins 5, the slots open, directing spring force at the guidingfin 5 surfaces which are in the direction of the longitudinal axis of themortar shell 1. Also in this case, thespring members 18 may be shaped such that thetail 4 of the mortar shell can be easily placed in thespring ring 13 but that due to the spring force generated, removing themortar shell 1 from thespring ring 13 requires considerably more force. Thus, the slots of thespring ring 13 receive the guidingfins 5 relatively easily but, at the same time, thespring ring 13 directs spring force at the guidingfins 5, due to which removing themortar shell 1 from thespring ring 13 requires considerably more force. - In yet another embodiment, the
spring ring 13 may be provided such that the preceding embodiments are combined, in which case placing thetail tube 3 in the opening of thespring ring 13 generates spring force directed at theouter surface 14 of thetail 4 and, at the same time, placing the guidingfins 5 in the slots 16 generates spring force directed at the guidingfins 5. Referring to the above, it is to be noted that thespring ring 13 may be any type of ring capable of generating spring force directed at thetail 4 of themortar shell 1 when receiving at least part of thetail 4 of themortar shell 1. -
FIG. 4 shows another embodiment of the present invention in which the connecting means comprise one or morelaminated rings 20. In the embodiment ofFIG. 4 , the connecting means of thesupport member 8 comprise anattachment sleeve 21 and atension sleeve 23 joined to it. Theattachment sleeve 21 may be attached to thesupport member 8 for example with threads or in a fixed manner, or in another mechanical manner. InFIG. 4 , twolaminated rings 20 have been placed in the space inside thetension sleeve 23. One or more support plates or base plates may be placed (not shown) may be placed between the laminated rings or on the front and/or rear side. The diameter of the hole of thetension sleeve 23 is such that thetension sleeve 23 is capable of receiving thetail tube 3 of themortar shell 1 or ahead part 25 of the tail tube. One embodiment of thelaminated ring 20 is shown inFIG. 5 . The diameter of anopening 24 of thelaminated ring 20 inside thetension sleeve 23 is smaller, at least slightly, than the outer diameter of thetail tube 3 of themortar shell 1 or the outer diameter of thehead part 25. Thus, when themortar shell 1 is pushed into place in thesupport member 8, thelaminated ring 20 and particularly itslamellas 22 yield and direct spring force at thetail tube 3 of themortar shell 1 or at thehead part 25, the spring force attaching themortar shell 1 to thesupport member 8. The diameter of the openings of the support plates and base plates substantially corresponds to the outer diameter of thetail tube 3 of themortar shell 1 or the outer diameter of thehead part 25, whereby they do not direct any resistance or force at the mortar shell. - As mentioned above, the connecting means 10 preferably comprise one or more
laminated rings 20, depending on the magnitude of the desired spring force or on the force required for attaching the mortar shell. The inner periphery of thelaminated ring 20 is, in accordance withFIG. 5 , divided intoadjacent lamellas 22 capable of yielding. The number oflamellas 22 and thus the length in the direction of the periphery and in the direction of the radius of the periphery may vary according to the need so that the desired spring force can be generated. The lamella rings 20 may be manufactured of a steel plate by cutting or in another corresponding manner, or of another corresponding material. -
FIG. 6 shows schematically an embodiment according to the present invention, where the connecting means 10 of thesupport element 8 comprise aflexible part 30. Further, acounterpart 32 is provided at the end of thetail tube 3 of thetail 4 of themortar shell 1. Theflexible part 30 is arranged to receive thecounterpart 32 in such a way that theflexible part 30 yields, directing spring force at the counterpart received for attaching themortar shell 1 to thesupport member 6. In the case ofFIG. 6 , the flexible part is a sleeve-like connectingpart 30 caused to yield in a direction transverse to its longitudinal axis when receiving thecounterpart 32. Thecounterpart 32 is provided at thetail 4 of the mortar shell and particularly at the end of thetail tube 3 in accordance withFIG. 6 . In this embodiment, the connectingpart 30 is comprised of several flexible claw-like parts arranged on a circular arch to provide a sleeve-like connecting part. - In the embodiment of
FIG. 7 , the sleeve-like connectingpart 30 receives thecounterpart 32 to the inside of it. Thecounterpart 32 comprises a cone opening away from thetail 4 of the mortar shell. This cone facilitates placement of themortar shell 1 correctly in thesupport member 6. Further, the cone of thecounterpart 32 is pressed against the inner walls of the sleeve-like connectingpart 30 as thecounterpart 32 becomes placed inside the connectingpart 30. Pressing and yielding, the connectingpart 30 becomes stressed and simultaneously directs spring force at the outer surface of thecounterpart 32 being placed inside it to attach the mortar shell to thesupport member 6. To achieve the above, thecounterpart 32 is dimensioned such that its outer diameter is at least partly greater than the inner diameter of the connectingpart 30, whereby the connectingpart 30 is forced to yield when thecounterpart 32 becomes placed inside it. In a preferred embodiment, the connectingpart 30 is pushed into the inside of thecounterpart 32 so far that the upper surface of the connectingpart 30 passes the cone of the connectingpart 32. Thus, the sleeve-like connectingpart 30 is tightly placed inside thecounterpart 32 and does not tend to get out. The conical shape of thecounterpart 32 also allows the counterpart to snap into place inside the connectingpart 30, as shown inFIG. 7 , whereby the mortar shell is not easily detached from thesupport member 8. - The
counterpart 32 may be provided at the end of thetail tube 3 of thetail 4 of the mortar shell, in which case it is an extension of thetail tube 3 or a part of thetail tube 3. In an alternative embodiment, thecounterpart 32 may simply be merely an end of thetail tube 3, left hollow, whereby it forms thecounterpart 32. - The spring force directed at the
counterpart 32 by the connectingpart 30 can be further increased by means of one or more spring elements (not shown) installed in the connecting part. The spring elements may be individual springs placed on the outer surface of the connectingpart 30, or alternatively a spring may be placed around the outer periphery of the connectingpart 30. Alternatively, thecounterpart 32 may be shaped and provided in such a way that it becomes placed around the connectingpart 30, whereby the spring force of the flexible connectingpart 30 is directed at the inner surface of thecounterpart 32. Thecounterpart 32 may be thehead part 25 of thetail 4 of themortar shell 1. - With reference to the above, it is to be noted that both the spring ring receiving the mortar shell tail or a part of to the inside of it and the flexible connecting part receiving around it the counterpart provided at the tail may be shaped and modified in a plurality of ways. In other words, it is essential to the present invention that the mortar shell is attachable to the support member by means of spring force. The spring force is generated by a flexible part provided in the support element and arranged to yield when the mortar shell is attached to the support member. Further, it is to be noted that in some cases the mortar shell can be attached to the
support member 8 by means of two or more embodiments described above. - It will be obvious to a person skilled in the art that as the technology advances, the basic idea of the invention can be implemented in a plurality of ways. Thus, the invention and its embodiments are not restricted to the above examples but may vary within the scope of the claims.
Claims (7)
1.-10. (canceled)
11. A support member for supporting a mortar shell into a breech-loading weapon barrel, the support member comprising a support element with an edge flange and a firing mechanism for firing the actual primer of the mortar shell and further comprising connecting means for attaching the support element to a tail of the mortar shell, the tail comprising guiding fins, wherein that the connecting means for attaching the support element to the tail of the mortar shell comprise at least one flexible part arranged to direct spring force at one or more guiding fins forming a part of the tail of the mortar shell.
12. A support member according to claim 11 , wherein that the flexible part is arranged to direct spring force at the outer periphery of the tail of the mortar shell.
13. A support member according to claim 12 , wherein that the flexible part comprises a spring ring arranged to receive the tail of the mortar shell in such a way that it directs spring force at the outer periphery of the tail of the mortar shell.
14. A support member according to claim 12 , wherein that it comprises one or more laminated rings comprising, on its periphery, two or more adjacent lamellas and arranged to receive the tail of the mortar shell in such a way that one or more lamellas of the laminated ring direct spring force at the outer periphery of the tail of the mortar shell.
15. A support member according to claim 13 , wherein that the flexible part comprises a spring ring with slots arranged to receive one or more guiding fins forming a part of the tail of the mortar shell such that it directs spring force at one or more guiding fins forming a part of the tail of the mortar shell.
16. A method for attaching a support member to a mortar shell, the method comprising:
arranging in the tail of the mortar shell a support member which comprises a support element; and
attaching the support member to the tail of the mortar shell, wherein by attaching the support member to one or more guiding fins forming a part of the mortar shell tail by means of one or more flexible parts in such a way that when receiving the mortar shell tail, the flexible part directs spring at one or more guiding fins forming a part of the mortar shell tail.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20085081 | 2008-01-31 | ||
FI20085081A FI121553B (en) | 2008-01-31 | 2008-01-31 | The support means for supporting a grenade in a weapon pipe and the method of attaching a support member to a grenade |
PCT/FI2009/050075 WO2009095537A1 (en) | 2008-01-31 | 2009-01-30 | Support member for supporting shell into breech-loading weapon barrel, and method |
Publications (1)
Publication Number | Publication Date |
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US20100288112A1 true US20100288112A1 (en) | 2010-11-18 |
Family
ID=39004381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/863,756 Abandoned US20100288112A1 (en) | 2008-01-31 | 2009-01-30 | Support member for supporting shell into breech-loading weapon barrel, and method |
Country Status (11)
Country | Link |
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US (1) | US20100288112A1 (en) |
EP (1) | EP2242982A4 (en) |
JP (1) | JP2011511249A (en) |
CN (1) | CN101970973A (en) |
AU (1) | AU2009208917B2 (en) |
CA (1) | CA2711756A1 (en) |
FI (1) | FI121553B (en) |
IL (1) | IL206871A (en) |
RU (1) | RU2482424C2 (en) |
WO (1) | WO2009095537A1 (en) |
ZA (1) | ZA201004945B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100288150A1 (en) * | 2008-01-31 | 2010-11-18 | Patria Land & Armament Oy | Arrangement for supporting shell into breech-loading weapon barrel |
US20100326309A1 (en) * | 2008-01-31 | 2010-12-30 | Mika Nurminen | Arrangement for supporting shell into weapon barrel, and support member |
US20100326310A1 (en) * | 2008-01-31 | 2010-12-30 | Jukka Tiainen | Arrangement for supporting shell into weapon barrel, support element and method |
US10088271B2 (en) * | 2013-03-28 | 2018-10-02 | Rheinmetall Waffe Munition Gmbh | Firing device for firing cartridge ammunition |
US20190170475A1 (en) * | 2017-02-01 | 2019-06-06 | X Products Llc | Projectile launcher |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2537068C1 (en) * | 2013-09-02 | 2014-12-27 | Открытое акционерное общество "Завод им. В.А. Дегтярева" | Launching facility |
CN104266545B (en) * | 2014-09-23 | 2016-02-10 | 中国运载火箭技术研究院 | A kind of submerged level heat emission device |
CN109668479B (en) * | 2019-01-30 | 2020-12-11 | 黄仕 | Fort |
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Also Published As
Publication number | Publication date |
---|---|
CA2711756A1 (en) | 2009-08-06 |
EP2242982A4 (en) | 2013-09-04 |
FI121553B (en) | 2010-12-31 |
JP2011511249A (en) | 2011-04-07 |
CN101970973A (en) | 2011-02-09 |
EP2242982A1 (en) | 2010-10-27 |
AU2009208917B2 (en) | 2013-04-18 |
FI20085081A (en) | 2009-08-01 |
ZA201004945B (en) | 2011-03-30 |
RU2482424C2 (en) | 2013-05-20 |
IL206871A (en) | 2014-07-31 |
AU2009208917A1 (en) | 2009-08-06 |
RU2010135802A (en) | 2012-03-10 |
WO2009095537A1 (en) | 2009-08-06 |
FI20085081A0 (en) | 2008-01-31 |
IL206871A0 (en) | 2010-12-30 |
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Legal Events
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AS | Assignment |
Owner name: PATRIA LAND & ARMAMENT OY, FINLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:REUNAMAKI, KARI;KURU, MAURI;GRONLUND, JARI;AND OTHERS;REEL/FRAME:024737/0152 Effective date: 20100614 |
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STCB | Information on status: application discontinuation |
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