US20070295197A1 - Firearm cartridge reloading devices and methods - Google Patents
Firearm cartridge reloading devices and methods Download PDFInfo
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- US20070295197A1 US20070295197A1 US11/679,169 US67916907A US2007295197A1 US 20070295197 A1 US20070295197 A1 US 20070295197A1 US 67916907 A US67916907 A US 67916907A US 2007295197 A1 US2007295197 A1 US 2007295197A1
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- die
- cartridge
- metallic
- bore
- diameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/025—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by compacting
Definitions
- the present disclosure is directed to devices and methods for loading and/or reloading firearm cartridges.
- Typical cartridge cases such as straight wall or bottleneck cartridges, are formed of malleable brass and are forcibly inserted into a bore in a resizing die. Forcibly inserting the cartridge in the die causes the brass to deform and assume the dimensions of the die's central bore. The process resizes the fired cartridge case to desired dimensions in preparation for inserting a new primer, new propellant, and a new bullet.
- FIG. 1 is a schematic side view of a conventional reloading die assembly 100 .
- the assembly 100 includes a die 110 and a cap assembly 150 .
- the die 110 includes a body 112 having an internal bore (not shown).
- the body 112 includes a plurality of external threads 114 and a lock nut 112 disposed on the threads 114 .
- the die 112 can be secured to a press (not shown) by mating the external threads 114 to internal threads of the press and tightening the lock nut 112 to secure the die 112 to the press.
- the die 110 also includes an opening 118 at the external threaded portion of the die that is configured to receive the cartridge for shaping and reloading.
- the cap 150 includes a cylindrical top portion 152 having a plurality of external threads 154 and a second lock nut 156 disposed on the threads 154 .
- the cap assembly 150 is threaded into the bore of the die 110 by mating the threads 154 with internal threads (not shown) of the bore, and the lock nut 156 secures the top portion 152 in place.
- conventional dies such as the die 100 illustrated in FIG. 1
- These metallic inner surfaces are manufactured on lathes, which can be time consuming for manufacturers using manual lathes and cost prohibitive for manufacturers to use an automated lathe.
- the machining process creates a large amount of scrap relative to the finished product. Disposing of or recycling the scrap is also time consuming and expensive.
- the metal-to-metal contact of the die to the cartridge requires lubrication to prevent the cartridge from sticking in the die following the resizing. Lubricating the cartridges creates additional time and expense in the reloading process.
- a shooter must lubricate the cartridges before resizing and remove the lubricant after resizing before the cartridge is reloaded with powder.
- the lubricant can foul the chamber of a firearm thereby creating a hazardous firing condition. Accordingly, a need exists to improve reloading devices and methods.
- FIG. 1 is a schematic side view of a reloading firearm die in accordance with the prior art.
- FIGS. 2-6 are schematic cross-sectional side views of reloading dies in accordance with embodiments of the invention.
- FIG. 7 is a flow diagram illustrating a method of manufacturing a reloading die in accordance with an embodiment of the invention.
- reloading dies include, but are not limited to, full-length, neck, and seating dies, capable of configuring straight wall, bottleneck, belted, beltless or other cartridges.
- reloading dies may reconfigure used firearm cartridges as well as new firearm cartridges.
- One embodiment of a cartridge reloading die is directed to a die including a housing having a cavity and a sleeve coupled to the housing in the cavity.
- the housing is composed of a first material; and the sleeve is composed of a second material.
- the sleeve includes a first internal portion having a first diameter and a second internal portion having a second diameter smaller than the first diameter.
- a die for reloading a firearm cartridge in another embodiment, includes a body composed of a first material and having a cavity extending through the body.
- the die also includes an insert fixedly connected to the cavity of the body.
- the insert is composed of a second material different from the first material and the insert includes a bore that is configured to at least partially receive a cartridge for shaping at least a portion of the cartridge.
- the bore has a first diameter and a second diameter smaller than the first diameter.
- a die for reloading a firearm cartridge includes a body having an interior bore.
- the bore includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, wherein the second portion is coated with a ceramic material and configured to at least partially receive a cartridge.
- a cartridge reloading die in another embodiment, includes a body composed of a first exterior metallic portion, a second interior non-metallic portion, and a third interior portion.
- the die also includes a cavity in the body.
- the second portion of the body defines a bore portion of the cavity configured for at least partially shaping a cartridge, and the third interior portion defines an engaging portion of the cavity configured for engaging a cap member.
- Another embodiment is directed to a method of manufacturing a firearm cartridge reloading die.
- the method includes forming a bore in a die body and positioning a sleeve member in the bore.
- the sleeve member has a first diameter and a second diameter less than the first diameter.
- the cavity is configured to releasably contact a cartridge at least partially inserted into the cavity for shaping at least a portion of the cartridge.
- FIG. 2 is a schematic cross sectional view of a cartridge reloading die 200 in accordance with one embodiment of the invention.
- the die 200 may be a full length die, neck die, seating die or other type of die capable of resizing different types of firearm cartridges.
- the die includes a housing or body 214 having a plurality of external threads 226 and a bore or cavity 216 .
- the body 214 is made of an alloy steel or similar metal suitable for precision machining.
- the external threads 226 mate with internal threads of a press (not shown), and a lock nut (not shown) disposed on the external threads 226 secures the die 200 to the press.
- the cavity 216 extends through the body 214 of the die 200 and through a bushing or sleeve portion 218 , and is configured to receive a firearm cartridge inserted into a lower portion 210 of the die 200 .
- the die 200 also includes an upper portion 260 having a first diameter less than a second diameter of the lower portion 210 .
- the body 214 has a single diameter that extends through the length of the die.
- the sleeve 218 extends through the body 214 and also includes a plurality of internal threads 234 on an upper section 224 of the sleeve 218 .
- the inner threads 234 are configured to receive a cap assembly (not shown) as is conventional in the art for reloading cartridges.
- the sleeve 218 can also include a transition surface 222 between the upper portion 260 and the lower portion 210 of the die 200 .
- the sleeve 218 is coupled to the body 214 and forms a contact surface 220 for contacting and resizing cartridges inserted into the die 200 .
- the sleeve 218 is composed of a non-metallic material.
- the sleeve 218 may be composed of a synthetic or ceramic material in specific embodiments. Forming the sleeve 218 of a non-metallic material provides many advantages over conventional cartridge reloading dies. By inserting a non-metallic sleeve 218 or bushing into the body 214 of the die 200 , significant portions of the die body 214 can be molded or formed with out machining.
- the sleeve 218 can be formed by a molding manufacturing process. As a result, decreasing the machining process of the die 200 on a lathe can significantly reduce the cost and waste associated with manufacturing the die 200 .
- the non-metallic sleeve 218 and non-metallic contact surface 220 are configured to reshape or resize the cartridge and release the cartridge from the cavity 216 such that the cartridge does not stick in the cavity 216 . More specifically, lubricant is not required to prevent the cartridge from sticking to the non-metallic sleeve 218 following resizing of the cartridge.
- a ceramic or synthetic sleeve 218 and contact surface 220 resizing a metal cartridge will not cause the cartridge to stick in the sleeve 218 .
- Eliminating the need to lubricate the cartridge reduces the time and expense of the reloading process by eliminating the steps of applying the lubricant before resizing the cartridge and removing the lubricant after resizing the cartridge.
- eliminating the lubricant also eliminates the danger of leaving residual lubricant on the cartridge after resizing, which can corrupt the load and also foul the firearm chamber creating a hazardous firing condition.
- the sleeve 218 is removably attached to the body 214 of the die 200 .
- a removable sleeve 218 provides the additional flexibility of replacing the contact surface 220 of the die 200 as the contact surface 220 becomes worn over time or is damaged, without having to replace the entire die 200 . Replacing only the sleeve portion 218 of the die 200 saves the time and expense of replacing the whole die unit 200 .
- reinserting the sleeve 218 can be cheaper than remanufacturing the entire die 200 .
- the sleeve 218 is formed by molding, which can be significantly cheaper than manufacturing the bore or cavity 216 of the die 200 on a lathe.
- removing the sleeve 218 can facilitate removing a cartridge from the die 218 after the cartridge has been reconfigured.
- FIGS. 3-6 are schematic cross-sectional views of a cartridge reloading die 200 in accordance with other embodiments of the invention.
- the die 300 is generally similar to the die 200 described above with reference to FIG. 2 .
- the illustrated die 300 includes a body 314 that is formed from a non-metallic material.
- the body 314 of the die 300 can be a synthetic or ceramic material, rather than a conventional steel body.
- the non-metallic die 300 can provide similar performance characteristics as the die 200 shown in FIG.
- the die 300 can be formed using manufacturing processes other than those required for machining the steel die 200 .
- the entire body 314 of the die 300 can be formed by a molding process.
- a molding process at least partially reduces the scrap material produced in manufacturing dies described above and accordingly reduces the time and cost of disposing of or recycling the scrap material.
- the contact surface 220 of the non-metallic body 314 does not require a lubricant to release a cartridge from the cavity 216 following reconfiguration of the cartridge.
- FIG. 4 is a schematic cross-sectional view of a cartridge reloading die 400 in accordance with another embodiment of the invention.
- the difference between the die 200 shown in FIG. 2 and the die 400 shown in FIG. 4 is that the sleeve 418 does not extend all the way through the body 414 .
- the sleeve and body configuration of FIG. 4 can be incorporated with the other embodiments described in this disclosure.
- Another difference illustrated in FIG. 4 is that the die 400 has a non-metallic body 414 and metallic sleeve 418 .
- the body 414 is formed of a ceramic or synthetic material and the sleeve 418 is formed of a steel alloy.
- the configuration of the non-metallic body 414 and metallic sleeve 418 provides the benefit of maintaining high tolerances of the contact surface 220 in the cavity 216 formed of the metallic sleeve 418 , while still allowing a significant portion of the die 400 to be formed from less expensive and time consuming manufacturing processes, such as molding for example.
- the sleeve 418 can be removed from the body 414 and a new body 414 can be attached to the sleeve 418 .
- FIG. 5 is a schematic cross-sectional view of a cartridge reloading die 500 in accordance with another embodiment of the invention.
- the die 500 is formed of a metallic body 214 having a non-metallic plating or coating 540 on the contact surface 220 of the cavity 216 in the body 214 .
- the non-metallic coating 540 is a ceramic or synthetic coating having similar performance characteristics to the sleeve 218 described above.
- the coating 540 eliminates the need for applying a lubricant to a cartridge inserted into the die 500 , which in turn reduces the number of steps in resizing or reconfiguring the cartridge.
- the coating 540 can be replated or reapplied if the coating becomes worn or damaged or otherwise incapable of holding the required tolerances for reconfiguring cartridges, thus reducing the expense of replacing the entire die 500 .
- FIG. 6 is a schematic cross-sectional view of a cartridge reloading die 600 in accordance with another embodiment of the invention.
- the body 614 of the die 600 is formed of a plurality of layers.
- the body 614 comprises a first layer 670 , a second layer 674 and a third layer 678 .
- the first layer 670 is metallic
- the second layer 674 is non-metallic
- the third layer 678 is metallic.
- the first and third layers 670 and 678 can be steel
- the second layer 674 can be a synthetic or ceramic material.
- the layers of the body 614 are configured such that the surface of the non-metallic second layer 674 is the contact surface 220 for receiving and reshaping cartridges. Accordingly, the non-metallic contact surface 220 can have similar performance characteristics and benefits of the non-metallic portions or contact surfaces of the die as described above.
- the body 614 comprises two layers rather than three layers.
- the body 614 includes a metallic outer layer 688 and a non-metallic inner layer 684 extending the full-length of the die 600 .
- the inner layer 684 also forms the contact surface 628 for receiving and resizing cartridges inserted into the cavity 216 , and have similar performance characteristics and benefits of the non-metallic portions or contact surfaces described above.
- FIG. 7 is a flow diagram illustrating a process 700 that can be used for manufacturing the cartridge reloading die 200 described above.
- the process 700 can include forming a bore in a die body at a block 710 .
- the bore can be metallic and can be formed in a molding or casing process.
- a sleeve member is positioned in the bore.
- the sleeve member can have a first and a second diameter, the second diameter being less than the first diameter.
- the sleeve member can be configured to releasably contact a cartridge that is at least partially inserted into the cavity for shaping or reconfiguring at least a portion of the cartridge.
- the sleeve member can be non-metallic, such as a ceramic or synthetic material, and can be formed in a molding or casting process.
Abstract
Firearm cartridge loading and reloading dies, such as a die having a metallic body with a cavity extending through the body and a sleeve inserted in the cavity. The sleeve is configured to receive a firearm cartridge and reconfigure the cartridge for loading or reloading. The sleeve can be metal, non-metallic ceramic, and/or.
Description
- This application claims the benefit of U.S. Provisional Patent Application No. 60,776,577, filed Feb. 24, 2006, which is incorporated herein by reference.
- The present disclosure is directed to devices and methods for loading and/or reloading firearm cartridges.
- Many shooting enthusiasts prefer to load or reload their own firearm cartridges with a reloading press. Although shooters often reload cartridges simply as a hobby, shooters are also able to save money and fine tune the accuracy and specific loads of their cartridges by reloading themselves. For example, shooters can adjust the weight of the load and bullet in the cartridge for specific applications, such as using a lighter load for practice or target shooting. Conventional reloading presses accept a reloading die for reconfiguring or reshaping the cartridge case before or after firing. Common reloading dies include full-length, neck, and seating dies. Typical cartridge cases, such as straight wall or bottleneck cartridges, are formed of malleable brass and are forcibly inserted into a bore in a resizing die. Forcibly inserting the cartridge in the die causes the brass to deform and assume the dimensions of the die's central bore. The process resizes the fired cartridge case to desired dimensions in preparation for inserting a new primer, new propellant, and a new bullet.
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FIG. 1 is a schematic side view of a conventional reloading dieassembly 100. Theassembly 100 includes adie 110 and acap assembly 150. The die 110 includes abody 112 having an internal bore (not shown). Thebody 112 includes a plurality ofexternal threads 114 and alock nut 112 disposed on thethreads 114. The die 112 can be secured to a press (not shown) by mating theexternal threads 114 to internal threads of the press and tightening thelock nut 112 to secure thedie 112 to the press. The die 110 also includes anopening 118 at the external threaded portion of the die that is configured to receive the cartridge for shaping and reloading. Thecap 150 includes acylindrical top portion 152 having a plurality ofexternal threads 154 and asecond lock nut 156 disposed on thethreads 154. Thecap assembly 150 is threaded into the bore of thedie 110 by mating thethreads 154 with internal threads (not shown) of the bore, and thelock nut 156 secures thetop portion 152 in place. - For durability and correct shaping of the cartridges, conventional dies such as the die 100 illustrated in
FIG. 1 , are typically constructed of steel and have steel or other metallic inner bore surfaces to contact and resize the cartridges. These metallic inner surfaces are manufactured on lathes, which can be time consuming for manufacturers using manual lathes and cost prohibitive for manufacturers to use an automated lathe. Moreover, the machining process creates a large amount of scrap relative to the finished product. Disposing of or recycling the scrap is also time consuming and expensive. In addition, when reconfiguring the cartridges in the die, the metal-to-metal contact of the die to the cartridge requires lubrication to prevent the cartridge from sticking in the die following the resizing. Lubricating the cartridges creates additional time and expense in the reloading process. For example, a shooter must lubricate the cartridges before resizing and remove the lubricant after resizing before the cartridge is reloaded with powder. In addition, if the lubricant is not adequately removed before firing the cartridge, the lubricant can foul the chamber of a firearm thereby creating a hazardous firing condition. Accordingly, a need exists to improve reloading devices and methods. -
FIG. 1 is a schematic side view of a reloading firearm die in accordance with the prior art. -
FIGS. 2-6 are schematic cross-sectional side views of reloading dies in accordance with embodiments of the invention. -
FIG. 7 is a flow diagram illustrating a method of manufacturing a reloading die in accordance with an embodiment of the invention. - A. Overview
- The following disclosure describes several embodiments of firearm cartridge loading and reloading dies. For the purposes of this disclosure, reloading dies include, but are not limited to, full-length, neck, and seating dies, capable of configuring straight wall, bottleneck, belted, beltless or other cartridges. In addition, reloading dies may reconfigure used firearm cartridges as well as new firearm cartridges. One embodiment of a cartridge reloading die is directed to a die including a housing having a cavity and a sleeve coupled to the housing in the cavity. The housing is composed of a first material; and the sleeve is composed of a second material. The sleeve includes a first internal portion having a first diameter and a second internal portion having a second diameter smaller than the first diameter.
- In another embodiment, a die for reloading a firearm cartridge includes a body composed of a first material and having a cavity extending through the body. The die also includes an insert fixedly connected to the cavity of the body. The insert is composed of a second material different from the first material and the insert includes a bore that is configured to at least partially receive a cartridge for shaping at least a portion of the cartridge. The bore has a first diameter and a second diameter smaller than the first diameter.
- In yet another embodiment, a die for reloading a firearm cartridge includes a body having an interior bore. The bore includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, wherein the second portion is coated with a ceramic material and configured to at least partially receive a cartridge.
- In another embodiment, a cartridge reloading die includes a body composed of a first exterior metallic portion, a second interior non-metallic portion, and a third interior portion. The die also includes a cavity in the body. The second portion of the body defines a bore portion of the cavity configured for at least partially shaping a cartridge, and the third interior portion defines an engaging portion of the cavity configured for engaging a cap member.
- Another embodiment is directed to a method of manufacturing a firearm cartridge reloading die. The method includes forming a bore in a die body and positioning a sleeve member in the bore. The sleeve member has a first diameter and a second diameter less than the first diameter. The cavity is configured to releasably contact a cartridge at least partially inserted into the cavity for shaping at least a portion of the cartridge.
- Specific details of several embodiments of the invention are described below with reference to firearm cartridge reloading dies; however several details describing well-known structures or processes often associated with reloading dies are not set forth in the following description for purposes of brevity and clarity. Also, several other embodiments of the invention can have different configurations, components, or procedures than those described in this section. A person of ordinary skill in the art, therefore, will understand that the invention may have other embodiments with additional elements, or the invention may have other embodiments without several of the elements shown and described below with reference to
FIGS. 1-6 . - Where the context permits, singular or plural terms may also include the plural or singular term, respectively. Moreover, unless the word “or” is expressly limited to mean only a single item exclusive from other items in reference to a list of at least two items, then the use of “or” in such a list is to be interpreted as including (a) any single item in the list, (b) all of the items in the list, or (c) any combination of the items in the list. Additionally, the term “comprising” is used throughout to mean including at least the recited feature(s) such that any greater number of the same features and/or other types of features and components are not precluded.
- B. Embodiments of Firearm Cartridge Reloading Dies
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FIG. 2 is a schematic cross sectional view of a cartridge reloading die 200 in accordance with one embodiment of the invention. One skilled in the art will appreciate that the die 200 may be a full length die, neck die, seating die or other type of die capable of resizing different types of firearm cartridges. The die includes a housing orbody 214 having a plurality ofexternal threads 226 and a bore orcavity 216. Thebody 214 is made of an alloy steel or similar metal suitable for precision machining. Theexternal threads 226 mate with internal threads of a press (not shown), and a lock nut (not shown) disposed on theexternal threads 226 secures the die 200 to the press. Thecavity 216 extends through thebody 214 of thedie 200 and through a bushing orsleeve portion 218, and is configured to receive a firearm cartridge inserted into alower portion 210 of thedie 200. One skilled in the art will appreciate that thecavity 216 can be configured to receive different types of cartridges, such as straight wall, bottleneck, belted, beltless, or other types of cartridges for example. Thedie 200 also includes anupper portion 260 having a first diameter less than a second diameter of thelower portion 210. In some embodiments, thebody 214 has a single diameter that extends through the length of the die. Thesleeve 218 extends through thebody 214 and also includes a plurality ofinternal threads 234 on anupper section 224 of thesleeve 218. Theinner threads 234 are configured to receive a cap assembly (not shown) as is conventional in the art for reloading cartridges. Thesleeve 218 can also include atransition surface 222 between theupper portion 260 and thelower portion 210 of thedie 200. - The
sleeve 218 is coupled to thebody 214 and forms acontact surface 220 for contacting and resizing cartridges inserted into thedie 200. In the embodiment illustrated inFIG. 2 , thesleeve 218 is composed of a non-metallic material. For example, thesleeve 218 may be composed of a synthetic or ceramic material in specific embodiments. Forming thesleeve 218 of a non-metallic material provides many advantages over conventional cartridge reloading dies. By inserting anon-metallic sleeve 218 or bushing into thebody 214 of thedie 200, significant portions of thedie body 214 can be molded or formed with out machining. For example, thesleeve 218 can be formed by a molding manufacturing process. As a result, decreasing the machining process of thedie 200 on a lathe can significantly reduce the cost and waste associated with manufacturing thedie 200. Additionally, thenon-metallic sleeve 218 andnon-metallic contact surface 220 are configured to reshape or resize the cartridge and release the cartridge from thecavity 216 such that the cartridge does not stick in thecavity 216. More specifically, lubricant is not required to prevent the cartridge from sticking to thenon-metallic sleeve 218 following resizing of the cartridge. For example, a ceramic orsynthetic sleeve 218 andcontact surface 220 resizing a metal cartridge will not cause the cartridge to stick in thesleeve 218. Eliminating the need to lubricate the cartridge reduces the time and expense of the reloading process by eliminating the steps of applying the lubricant before resizing the cartridge and removing the lubricant after resizing the cartridge. Moreover, eliminating the lubricant also eliminates the danger of leaving residual lubricant on the cartridge after resizing, which can corrupt the load and also foul the firearm chamber creating a hazardous firing condition. - In certain embodiments the
sleeve 218 is removably attached to thebody 214 of thedie 200. Aremovable sleeve 218 provides the additional flexibility of replacing thecontact surface 220 of the die 200 as thecontact surface 220 becomes worn over time or is damaged, without having to replace theentire die 200. Replacing only thesleeve portion 218 of the die 200 saves the time and expense of replacing thewhole die unit 200. In addition, reinserting thesleeve 218 can be cheaper than remanufacturing theentire die 200. For example, in one embodiment thesleeve 218 is formed by molding, which can be significantly cheaper than manufacturing the bore orcavity 216 of thedie 200 on a lathe. In addition, in some embodiments, removing thesleeve 218 can facilitate removing a cartridge from thedie 218 after the cartridge has been reconfigured. -
FIGS. 3-6 are schematic cross-sectional views of a cartridge reloading die 200 in accordance with other embodiments of the invention. Like reference characters refer to like components inFIGS. 3-6 andFIG. 2 , and thus the description of such components will not be repeated with reference toFIG. 3-6 . Referring specifically toFIG. 3 , thedie 300 is generally similar to the die 200 described above with reference toFIG. 2 . The illustrateddie 300, however, includes abody 314 that is formed from a non-metallic material. For example, thebody 314 of thedie 300 can be a synthetic or ceramic material, rather than a conventional steel body. The non-metallic die 300 can provide similar performance characteristics as thedie 200 shown inFIG. 2 , while also reducing the time and cost of manufacturing thedie 300. Specifically, thedie 300 can be formed using manufacturing processes other than those required for machining the steel die 200. For example, in certain embodiments theentire body 314 of thedie 300 can be formed by a molding process. A molding process at least partially reduces the scrap material produced in manufacturing dies described above and accordingly reduces the time and cost of disposing of or recycling the scrap material. In addition, thecontact surface 220 of thenon-metallic body 314 does not require a lubricant to release a cartridge from thecavity 216 following reconfiguration of the cartridge. -
FIG. 4 is a schematic cross-sectional view of a cartridge reloading die 400 in accordance with another embodiment of the invention. The difference between the die 200 shown inFIG. 2 and thedie 400 shown inFIG. 4 is that thesleeve 418 does not extend all the way through thebody 414. It will be appreciated that the sleeve and body configuration ofFIG. 4 can be incorporated with the other embodiments described in this disclosure. Another difference illustrated inFIG. 4 is that thedie 400 has anon-metallic body 414 andmetallic sleeve 418. For example, thebody 414 is formed of a ceramic or synthetic material and thesleeve 418 is formed of a steel alloy. The configuration of thenon-metallic body 414 andmetallic sleeve 418 provides the benefit of maintaining high tolerances of thecontact surface 220 in thecavity 216 formed of themetallic sleeve 418, while still allowing a significant portion of the die 400 to be formed from less expensive and time consuming manufacturing processes, such as molding for example. In addition, if thebody 414 of thedie 400 becomes worn or damaged, thesleeve 418 can be removed from thebody 414 and anew body 414 can be attached to thesleeve 418. -
FIG. 5 is a schematic cross-sectional view of a cartridge reloading die 500 in accordance with another embodiment of the invention. The difference between the die 200 shown inFIG. 2 and thedie 500 shown inFIG. 5 is that thedie 500 is formed of ametallic body 214 having a non-metallic plating or coating 540 on thecontact surface 220 of thecavity 216 in thebody 214. In certain embodiments thenon-metallic coating 540 is a ceramic or synthetic coating having similar performance characteristics to thesleeve 218 described above. For example, thecoating 540 eliminates the need for applying a lubricant to a cartridge inserted into thedie 500, which in turn reduces the number of steps in resizing or reconfiguring the cartridge. Moreover, thecoating 540 can be replated or reapplied if the coating becomes worn or damaged or otherwise incapable of holding the required tolerances for reconfiguring cartridges, thus reducing the expense of replacing theentire die 500. -
FIG. 6 is a schematic cross-sectional view of a cartridge reloading die 600 in accordance with another embodiment of the invention. The difference between the die 200 shown inFIG. 2 and thedie 600 shown inFIG. 6 is that thebody 614 of thedie 600 is formed of a plurality of layers. In the embodiment shown inFIG. 6 , thebody 614 comprises afirst layer 670, asecond layer 674 and athird layer 678. In certain embodiments, thefirst layer 670 is metallic, thesecond layer 674 is non-metallic, and thethird layer 678 is metallic. For example, the first andthird layers second layer 674 can be a synthetic or ceramic material. The layers of thebody 614 are configured such that the surface of the non-metallicsecond layer 674 is thecontact surface 220 for receiving and reshaping cartridges. Accordingly, thenon-metallic contact surface 220 can have similar performance characteristics and benefits of the non-metallic portions or contact surfaces of the die as described above. In another embodiment illustrated inFIG. 6 , thebody 614 comprises two layers rather than three layers. For example, thebody 614 includes a metallicouter layer 688 and a non-metallicinner layer 684 extending the full-length of thedie 600. Theinner layer 684 also forms thecontact surface 628 for receiving and resizing cartridges inserted into thecavity 216, and have similar performance characteristics and benefits of the non-metallic portions or contact surfaces described above. -
FIG. 7 is a flow diagram illustrating aprocess 700 that can be used for manufacturing the cartridge reloading die 200 described above. Theprocess 700 can include forming a bore in a die body at ablock 710. In certain embodiments the bore can be metallic and can be formed in a molding or casing process. At a block 720 a sleeve member is positioned in the bore. The sleeve member can have a first and a second diameter, the second diameter being less than the first diameter. The sleeve member can be configured to releasably contact a cartridge that is at least partially inserted into the cavity for shaping or reconfiguring at least a portion of the cartridge. In certain embodiments, the sleeve member can be non-metallic, such as a ceramic or synthetic material, and can be formed in a molding or casting process. - From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the invention. Furthermore, aspects of the invention described in the context of particular embodiments may be combined or eliminated in other embodiments. Further, while advantages associated with certain embodiments of the invention have been described in the context of those embodiments, other embodiments may also exhibit such advantages, and not all embodiments need necessarily exhibit such advantages to fall within the scope of the invention. Accordingly, the invention is not limited, except as by the appended claims.
Claims (25)
1. A cartridge reloading die, the die comprising:
a housing having a cavity, wherein the housing is composed of a first material; and
a sleeve coupled to the housing in the cavity, wherein the sleeve is composed of a second material and includes a first internal portion having a first diameter and a second internal portion having a second diameter smaller than the first diameter.
2. The die of claim 1 wherein the sleeve further comprises a transition portion between the first and second internal portions having a generally tapering diameter between the first and second diameters.
3. The die of claim 1 wherein the second material is non-metallic.
4. The die of claim 3 wherein the first material comprises a synthetic material.
5. The die of claim 3 wherein the non-metallic material comprises a ceramic material.
6. The die of claim 1 wherein the first material is metallic.
7. The die of claim 1 wherein the housing and the sleeve are integral components of the die.
8. The die of claim 7 wherein the first and second materials are non-metallic.
9. The die of claim 1 wherein the sleeve is removable from the housing.
10. The die of claim 1 wherein the sleeve comprises a single piece.
11. The die of claim 1 wherein at least a portion of the cavity is threaded and at least an exterior portion of the housing is threaded.
12. A die for reloading a firearm cartridge, the die comprising:
a body composed of a first material, the body having a cavity extending through the body; and
an insert fixedly connected to the cavity of the body, wherein the insert is composed of a second material different from the first material and includes a bore that is configured to at least partially receive a cartridge for shaping at least a portion of the cartridge, wherein the bore has a first diameter and a second diameter smaller than the first diameter.
13. The die of claim 12 wherein the first material is metallic and the second material is non-metallic.
14. The die of claim 13 wherein the second material comprises ceramic.
15. The die of claim 13 wherein the second material comprises a synthetic material.
16. The die of claim 12 wherein the bore is coated with a ceramic material.
17. The die of claim 12 wherein the bore is configured for removing the cartridge after shaping at least a portion of the cartridge.
18. The die of claim 17 wherein the bore is configured for removing the cartridge without a lubricant.
19. A die for reloading a firearm cartridge, the die comprising a body having an interior bore, wherein the bore includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, wherein the second portion is coated with a ceramic material and configured to at least partially receive a cartridge.
20. A cartridge reloading die, the die comprising:
a body composed of a first exterior metallic portion, a second interior non-metallic portion, and a third interior portion; and
a cavity in the body, wherein the second portion defines a bore portion of the cavity configured for at least partially shaping a cartridge, and the third interior portion defines an engaging portion of the cavity configured for engaging a cap member.
21. The die of claim 19 wherein the third interior portion is metallic.
22. A method of manufacturing a firearm cartridge reloading die, the method comprising:
forming a bore in a die body; and
positioning a sleeve member in the bore, wherein the sleeve member has a first diameter and a second diameter less than the first diameter, and wherein the cavity is configured to releasably contact a cartridge at least partially inserted into the cavity for shaping at least a portion of the cartridge.
23. The method of claim 22 wherein the bore is metallic and the sleeve member is non-metallic.
24. The method of claim 22 wherein the sleeve member is composed of a ceramic or synthetic material.
25. The method of claim 22 wherein forming the bore comprising molding or casting the bore, the method further comprising molding or casting the sleeve member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/679,169 US20070295197A1 (en) | 2006-02-24 | 2007-02-26 | Firearm cartridge reloading devices and methods |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77657706P | 2006-02-24 | 2006-02-24 | |
US11/679,169 US20070295197A1 (en) | 2006-02-24 | 2007-02-26 | Firearm cartridge reloading devices and methods |
Publications (1)
Publication Number | Publication Date |
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US20070295197A1 true US20070295197A1 (en) | 2007-12-27 |
Family
ID=38872390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/679,169 Abandoned US20070295197A1 (en) | 2006-02-24 | 2007-02-26 | Firearm cartridge reloading devices and methods |
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US (1) | US20070295197A1 (en) |
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