Nipples And Guards Patents (Class 42/83)
  • Patent number: 10018439
    Abstract: A hammer block for a firearm is disclosed. The firearm includes a firing pin and a hammer. The hammer is pivotally attached to a hammer pin within a trigger house of a lower receiver. The hammer block includes a body comprising an upper portion and a lower portion. The hammer block also includes a central gap forming two downwardly facing legs in the lower portion of the body. The body is positioned within the trigger housing in front of the hammer with the two downwardly facing legs positioned on the sides of the hammer and the central gap positioned over the hammer so that the hammer rotates into the body and is prevented from engaging the firing pin.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 10, 2018
    Assignee: KUDZU ARMS, LLC
    Inventor: Christopher G. Bailey
  • Patent number: 8361810
    Abstract: Methods are disclosed for producing a bioweapon-sensitive fibrous-network product, wherein the subject products exhibit a color change in response to exposure to a biological agent (or portion thereof) as used in a biological weapon. Also disclosed are fibrous-network products that contain units of biopolymeric material that impart a color change to the products in response to exposure to a biological agent (or portion thereof) as used in a biological weapon.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: January 29, 2013
    Inventors: Dennis Farwell, Keith Baumann
  • Patent number: 8191300
    Abstract: A handguard assembly for a firearm includes a stationary handguard portion, a movable handguard portion, a catch, and a latch mechanism. The catch is positioned on an interior of the handguard assembly, and the latch mechanism is position on an exterior of the handguard assembly. Both the catch and the latch mechanism maintain the movable handguard portion in a closed position. A STANAG mount adapter assembly includes a body portion, two flange portions, and an alignment mechanism. The flange portions are positioned on opposite lateral sides of the body portion and are configured to engage a STANAG mount, while the alignment adjustment mechanism is configured to adjust the lateral alignment of the body portion with reference to the STANAG mount. The STANAG mount adapter assembly can be used together with the handguard assembly to create an elongated rail platform on an SA80 rifle.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: June 5, 2012
    Assignee: Daniel Defense, Inc.
    Inventor: Marvin C. Daniel
  • Patent number: 7749768
    Abstract: The invention is a method of measuring oxygen concentration in a package having an oxygen sensitive product disposed therein. The method includes exposing a luminescent compound that is disposed in an interior of the package to light having a wavelength that is absorbed by the luminescent compound so that the luminescent compound is promoted into an excited state. When the exposure of the light is terminated, the excited luminescent compound emits light that is detectable by a detector positioned outside of the package. The intensity of the emitted light is inversely proportional to the oxygen concentration and is used in conjunction with mathematical function that describes the luminescent intensity of the luminescent compound as a function of oxygen concentration and temperature to calculate the oxygen concentration. The method may be used to verify and track the oxygen concentration of a package as it moves through a distribution system.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: July 6, 2010
    Assignee: Cryovac, Inc.
    Inventors: Marvin Russell Havens, Charles Rice Barmore
  • Patent number: 7587851
    Abstract: A gasket designed to fit into the bottom of the lower receiver of an M16 and AR style rifle. The gasket assists in preventing debris and blown primers from inhibiting the firing motion of the trigger of the rifle. The gasket surrounds a portion of the trigger within the lower receiver without impeding the movement of the trigger. The gasket lies flat in the bottom of the lower receiver and is retained in place by the installed trigger and trigger spring.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: September 15, 2009
    Assignee: DPMS Firearms, LLC
    Inventor: Randy E. Luth
  • Patent number: 6862828
    Abstract: The present invention is a system for converting a conventional modern firearm into a muzzle-loading firearm capable of utilizing modern rifle propellants. The invention utilizes a breech plug disposed in the breech end of a firearm to accept a rifle primer and powder charge, and a primer installation tool to accurately and securely seat a rifle primer in a primer pocket.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: March 8, 2005
    Inventor: Roger Dale Joyce
  • Patent number: 6516549
    Abstract: A muzzle-loading firearm is disclosed. In the preferred embodiment, the muzzle-loading firearm includes a receiver having a locking mechanism; a barrel having a breech end, a bore and a muzzle end; a primer carrier for transporting a primer to the breech end of the barrel prior to firing and for extracting the primer from the breech end of the barrel after firing; and a breech plug in the breech end of the barrel, wherein the breech plug receives the primer from the primer carrier. In the preferred embodiment, the primer carrier includes a horseshoe-shaped primer holder attached to the locking mechanism.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: February 11, 2003
    Assignee: Savage Arms, Inc.
    Inventors: Carl B. Hildebrandt, Charles W. Hodgdon, Ronald Coburn, Lee Cavanaugh, Yasmine A. Adham, Daniel Borecki, Henry C. Ball
  • Publication number: 20020129534
    Abstract: A breech plug for a muzzleloading rifle has an elongated body with external threads and having rearward and forward ends. A circular depression is formed in the rearward end of the body and is surrounded by an annular rim. The annular rim has an inner diameter slightly less than the diameter of a bore of the barrel of the rifle. The depression has a tapered bottom surface that slopes inwardly and rearwardly and terminates in a first center bore extending longitudinally along a center axis of the body. A narrow diameter bore connects the first center bore with a second bore having a diameter substantially the same as the first center bore. The second center bore terminates in an enlarged bore portion adapted to receive a propellant material. The first center bore provides an expansion chamber for a large percussion element to be ignited in the depression.
    Type: Application
    Filed: May 10, 2002
    Publication date: September 19, 2002
    Applicant: Ebsco Industries, Inc.
    Inventor: Eric T. Hengstenberg
  • Patent number: 6343430
    Abstract: A firing nipple for a muzzle loading firearm where there are provided a plurality of exterior wall sections of differing diameters to provide abutment shoulders to sealingly engage against surfaces on a breech plug, and an internal chamber having a tapering wall to direct the hot gasses. The arrangement substantially prevents blow back and provides for an increased efficiency in the firing of a weapon.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: February 5, 2002
    Inventor: Michel Martel
  • Patent number: 6314670
    Abstract: A muzzle loader firearm having a primer cavity that is sized to have an interference fit with a desired primer, to be received therein, so that an outwardly facing surface of the exterior casing of the primer, upon being discharged, expands and forms a fluid tight seal with an interior surface of the primer cavity to prevent the escape of any significant gases therebetween. The firearm is provided with a small head space which only allows minor rearward movement of the primer, upon being discharged within the primer cavity, to maintain an adequate fluid tight seal, formed between the outwardly facing surface of the primer casing with the inwardly facing surface of the primer cavity. To facilitate an increased temperature of the primer charge, upon being discharged, the primer cavity communicates with the ignition bore via an oxygen recess that is sized to accommodate a desired quantity of oxygen to facilitate a more rapid and hotter burning of the primer charge.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: November 13, 2001
    Inventor: Frederick W. Rodney, Jr.
  • Patent number: 6305113
    Abstract: The barrel (2) and the breech (8) are coaxially screw mounted within a tubular casing (9), and therefore said casing (9) not only stands as an interconnection between these elements, but reinforces the same substantially, allowing the use of more tilan one gunpowder pellet (16), a throttling (13) being established between the two casing (9) are at which the nipple assembly (15) is located on said casing, being thus laterally arranged. The rifle may thus, with the classic lateral nipple assembly, be easily taken down to be cleaned. lt is moreover fitted with an additional safety (36) which allows the cocked position with safety to be fall silently changed to the cocked position without safety, which is particularly appropriate when the rifle is used as a hunting weapon.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: October 23, 2001
    Assignee: Ardesa, S.A.
    Inventor: Angel Calvete
  • Patent number: 6226916
    Abstract: An improved nipple, used with a percussion cap to ignite the propellent of a muzzleloader without significant ejecta from the nipple (back-flash), is disclosed. A check valve, preferably using a spherical actuator that is loosely retained within the valve chamber, is used to preclude back-flash. Use of a check valve and use of a relatively mild percussion cap (compared to primers) revealed a set of new problems that are solved by the disclosed device. Difficulty in removing spent caps, because of the lack of cap removing back-flash, was solved by flash chamber structure within the nipple adjacent to the cap. A tendency for the protective membranes of percussion caps to lodge within a nipple not having back-flash was cured by the use of an actuator retainer that directs the actuator to the side of the valve chamber during ignition. Ignition was improved by the use of a flash jet orifice and by the use of a directing actuator retainer.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: May 8, 2001
    Inventor: Steven Scott Kendall
  • Patent number: 6176031
    Abstract: A self-aligning tool for inserting percussion caps on firing nipples comprising a central hub with radially spaced apart spokes that each form an integral arm that terminates in a distal hand for temporarily securing the percussion cap until insertion. Each elongated arm comprises at least one storage hole for storing additional percussion caps. Each distal hand comprises at least one holder for temporarily receiving and retaining the percussion cap. Each holder defines a circular hole into which the cap is inserted for retention. Each holder comprises a periphery defining arcuate outer and inner lips separated by an elongated lateral slot. During the insertion process, the user aligns the percussion cap with the nipple by inserting the arcuate holder lips into the exposed breech. When the lips abut the interior walls of the bore, the cap is also aligned with the nipple. The user then presses the percussion cap firmly against the nipple until it is seated.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: January 23, 2001
    Inventor: Del Ramsey
  • Patent number: 6141897
    Abstract: A breech plug for a black powder firearm is provided which breech plug has a chamber into which black powder, a black powder equivalent, or Pyrodex pellets is received and a flash channel for transmitting a flame to the chamber. The flash channel includes a linear portion which is at an angle of more than 0 degrees and less than 90 degrees with respect to a bottom wall of the chamber. In a preferred embodiment, the linear portion of the flash channel intersects the center of the bottom wall of the black powder chamber. The breech plug further has a threaded bore for receiving a nipple over which a percussion cap to be struck by a trigger actuated hammer is placed. The flash channel also includes a curved portion which extends between the bore and the linear portion.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: November 7, 2000
    Assignee: Cabela's Inc.
    Inventor: Jerald D. Bramer
  • Patent number: 5915938
    Abstract: A protective cover for firearm percussion caps is provided which is removably mounted to the existing firearm nipple and secured to another portion of the firearm by an elastomeric loop. The cover has a hollow, generally cylindrical configuration formed from resilient and weatherproof material, such as rubber, and can flex off of its longitudinal axis to facilitate installation onto the nipple in close confines. A radially extending handle formed from a more rigid material is mechanically mounted to the cover between two O-rings formed from material more easily bonded to the cover. The interior of the cover is sufficiently resilient and sized so as to sealingly receive most commonly used firearm nipples via an interference fit to prevent moisture penetration to the percussion cap.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: June 29, 1999
    Inventor: Michael Alan Moore
  • Patent number: 5915934
    Abstract: A muzzleloading rifle has a bolt with a laterally extending handle. The bolt is operationally connected to the cocking piece of the firearm by means of engaged cam surfaces of the bolt and the cocking piece which will permit the rifle to be cocked only by moving the bolt handle in an upwardly and rotational motion without any longitudinal movement of the bolt towards the cocking piece. After the firearm has been loaded by means of depositing a disc element with a primer element in the center bore thereof in the breech opening of the firearm, the firearm is placed in a firing condition by reversing rotational motion of the bolt handle. The disc element has a center bore which is adapted to receive a conventional nipple and a percussion cap, or in lieu thereof, and preferably, a shot gun primer. The latter is preferred in that it provides a hotter and more intense ignition of the gun powder in the muzzleloading rifle art.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: June 29, 1999
    Assignee: Modern Muzzleloading, Inc.
    Inventors: William A. Knight, L. Dale Watley
  • Patent number: 5907920
    Abstract: An ignition assembly for a muzzle loading firearm. The ignition assembly includes a conventional breech plug and a modified percussion nipple having a rearward end for receiving a percussion cap and a forward end which extends into the nipple bore of the breech plug. The forward end of the nipple has a reduced diameter so that there is an annular space between the outer surface at the forward end of nipple and the inner surface which defines the nipple bore of the breech plug. The nipple has a rearward fire channel which extends forwardly from its rearward opening and a forward fire channel which extends from the forward end of the rearward fire channel to its forward opening at the powder well of the breech plug. A pair of side fire channels extend from the rearward fire channel to the annular space between the forward end of the nipple and an annular inner wall which defines the nipple bore of the breech plug to enable this annular space to function as an axillary fire channel leading to the powder well.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: June 1, 1999
    Assignee: Thompson Intellectual Properties, Ltd.
    Inventor: Mark C. Laney
  • Patent number: 5657569
    Abstract: A nipple for use in igniting a propellant charge in a muzzle loading firearm employing percussive ignition caps, has an elongated body with a generally cylindrical cap receiving portion adjacent one end and a mounting portion adjacent the other end. The outer surface of the cap receiving portion is cooperatively dimensioned and configured to slidably seat percussion caps thereon. The body has a passage extending axially therethrough with a generally funnel shaped inlet portion extending axially from the one end through a major portion of the length of the body. The funnel shaped inlet portion tapers radially inwardly from the one end towards the other end at an angle less than 25.degree. relative to the longitudinal axis of the passage, and the throat portion has a generally uniform cross section corresponding to the smallest cross section of the inlet portion.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: August 19, 1997
    Assignee: Connecticut Valley Arms, Inc.
    Inventors: Randall D. Jernigan, Francis J. Korhonen
  • Patent number: 5644861
    Abstract: A firing mechanism for a muzzleloading rifle has a stock, a rifle barrel, a breech plug in the rearward end of said breech plug, a receiver on the stock, a bolt and hammer assembly in the receiver rearwardly of the nipple, and a trigger assembly operatively secured to the bolt and hammer assembly. An adapter element is mounted on the rearward end of the nipple and has a rearward end with an opening therein for receiving and holding a cap rifle primer. The bolt and hammer assembly has a hammer with a forward end in axial alignment with the adapter element, the forward end of the hammer terminating in a forwardly extending conical shaped firing surface to engage a rifle primer mounted within the opening at the rearward end of the adapter element.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: July 8, 1997
    Assignee: Modern Muzzleloading, Inc.
    Inventor: William A. Knight
  • Patent number: 5632109
    Abstract: A muzzle loading firearm includes a receiver, a flash plate adjacent the rear end of the barrel, a downward extending then forward extending exhaust channel and a nipple across the exhaust passageway from the flash plate. The nipple has an ignition passageway which terminates in an output port which is not coaxially aligned with the rear port of the flash passage of the flash plate to prevent backflash from returning through the nipple. The nipple has a forward face which defines a concave arcuate surface in the exhaust channel for further directing the backflash away from the ignition passageway and into the exhaust channel. An exhaust tube, extending forwardly from the receiver for venting the exhaust gases in a safe direction. The exhaust channel and exhaust tube are formed of a material having a high convection coefficient for quickly cooling the exhaust gases.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: May 27, 1997
    Inventor: Carl E. Caudle
  • Patent number: 5566489
    Abstract: An over-barrel flash guard for use with a muzzle-loading firearm including a plate having a front surface, a back surface, and a periphery interconnecting the surfaces formed of an upper edge, a lower edge, a vertical long side edge, and a vertical short side edge with the side edges interconnected between the upper edge and the lower edge and with the plate further having a notch formed on the lower edge and wherein the notch has a narrow upper part and a wide lower part and wherein the lower part of the notch defines a holding space for removably holding a stock of a muzzle-loading firearm at a location near a flintlock thereof and the upper part of the notch defines a sighting window aligned with a sight on the barrel of the muzzle-loading firearm.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: October 22, 1996
    Inventors: Gary F. Artman, Ronnie G. Artman
  • Patent number: 5487232
    Abstract: An improved detonator assembly for a black powder firearm having a breech block, a receiver, and a nipple. The detonator assembly comprises a primer and a primer carrier. The primer carrier has an axial bore dimensioned to receive the primer at one end and slip over the firearm nipple at the opposite end. The primer carrier has a lip that abuts the breech block rear end. A tab laterally extends from the lip to provide a handle for installing and removing the assembly and a visual indication that the firearm is primed.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: January 30, 1996
    Assignee: The Marlin Firearms Company
    Inventors: William E. Osborne, Harold J. Waterman, Jr., David Findlay
  • Patent number: 5467551
    Abstract: A nipple for a muzzle-loading firearm includes a generally cylindrical main body with a forward end of smaller diameter projecting forwardly and a rearward end of smaller diameter projecting rearwardly from the main body. An ignition bore extends completely through the nipple along the longitudinal axis thereof. The rearward end includes a tapered exterior surface with a forward tapered portion and a rearward tapered portion having different slopes. An annular groove is formed in the forward tapered portion slightly forward of the rearward tapered portion, and the rearward tapered portion preferably has a steeper slope than the forward tapered portion. Each tapered surface of the rearward end tapers to a smaller diameter from the main body rearwardly.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: November 21, 1995
    Assignee: Modern Muzzleloading, Inc.
    Inventor: Albert L. Kruse
  • Patent number: 5339553
    Abstract: A self-removing cover guard for muzzle leading firearms of the type having a nipple for receiving a percussion cap. The cover guard includes a plate or cup secured to the breech or drum of the firearm by the nipple; a spring loaded hinge connected at one end to the plate or cup; and a nipple cover affixed to the other end of the hinge for pivotal placement or displacement of the nipple cover on or off the nipple. The spring, which may be integral with the hinge, is biased to automatically remove the nipple cover off the nipple, and hence the percussion cap, when the firearm hammer is retracted from its un-cocked, cover holding, position. A sealant may be provided between the nipple cover and the nipple or cup to protect the percussion cap from moisture.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: August 23, 1994
    Inventor: Robert M. Kearns
  • Patent number: 5307583
    Abstract: A radially loading ignition system for a muzzle loading weapon generally comprises a body having threads on its outer surface and a well sunk into one end for loosely holding a shotgun shell primer; a first opening through the side of the well for passing the primer into the well radially; and a rotatable cover enclosing the well and having a second opening which is aligned with the first opening for loading the primer and which is rotated out of alignment with the first opening for closing the ignition system. The ignition system is suitable for use in muzzle loading weapons using either an in-line firing system or a conventional swing hammer. A spare primer holder is also disclosed which comprises a semi-circular ring of elastomeric material adapted to snap onto a rifle scope or barrel and having a series of holes for frictionally receiving spare primers.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: May 3, 1994
    Inventors: Gary Mahn, Gary Bowman
  • Patent number: 5016379
    Abstract: A percussion cap nipple for use with black powder firearms. The nipple includes a series of internal passageways that cooperate to produce a throughbore that directs the firing charge to the main powder charge in a fast and reliable manner yielding improved powder ignition. The base or exit end is flared to produce a wide spread of a greater quantity of sparks to the powder chamber. The inlet end is narrowed to form an anvil type end wall over which the percussion cap fits. This anvil cooperates with the hammer to assure positive detonation of the percussion cap.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: May 21, 1991
    Assignee: Mountain State Muzzleloading Supplies, Inc.
    Inventor: Fred R. Lambert
  • Patent number: 4888901
    Abstract: Muzzle-loading firearm which ignites the powder by means of a percussion cap located on a nipple coaxially of the bore, a venting passage directing gas laterally of the nipple.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: December 26, 1989
    Assignee: K. W. Thompson Tool Co., Inc.
    Inventors: Kendrick L. French, Mark C. Laney
  • Patent number: 4519157
    Abstract: A nipple for use in conjunction with firearms to permit passage of an ignition impetus to a propellant, especially those firearms which employ black powder and which use percussion caps to provide an ignition impetus, the nipple including an elongated body formed to accept a percussion cap on one end thereof in a conventional manner, the other end of the body, typically for threading into the breech of a rifle or the rear portion of a cylinder of a pistol and configured such that it extends into the propellant chamber.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: May 28, 1985
    Inventor: Frank Giangerelli
  • Patent number: 4485577
    Abstract: A removable cover for percussion cap firearms keeps the cap dry and allows the firearm to be carried in a fully cocked condition with no danger of accidental discharge. The cover can be quickly and silently removed from over the percussion cap at the time the weapon is to be fired. The cover includes an open ended bore that slidably receives the projecting length of the cap supporting nipple, hermetically sealing the cap within. The length of the bore is such that it's closed end is spaced clear of the cap when the open bottom end rests against the firearm. The hammer may accidently strike the cover but the striking force will be deflected to bypass the cap and be transmitted directly to the firearm breech area adjacent the nipple.
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: December 4, 1984
    Inventor: R. Keith Lunders
  • Patent number: 4461109
    Abstract: A muzzle loading firearm has a barrel bore into one end of which is force fitted a breech plug. The barrel wall has a radial aperture through one side and a diamaterally opposed recess in its inner surface, and the breech plug has a diamaterally extending passage aligned with the aperture and recess in the barrel wall. In one embodiment, a bolster is force fit into the barrel aperture, breech plug passage and barrel recess. The breech plug has a bore in its inner end communicating with the passage therein, and the bolster has a flash chamber and passage aligned with the breech plug bore.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: July 24, 1984
    Assignee: Connecticut Valley Manufacturing, Inc.
    Inventor: Julian Eguizabal
  • Patent number: 4384423
    Abstract: A firing mechanism for installation or a muzzle-loading firearm is disclosed. The firing mechanism has a drum means which is attached to the muzzle-loading firearm at a point adjacent its breech. A cap holder fits to the firing mechanism and holds a firing pin. The firing pin fits within a cylinder defined by a portion of the cap holder and drum means. The cylinder defines a closed chamber so that there is no blow back of gases and so that the ignition cap is closed from the exterior of the firearm.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: May 24, 1983
    Inventor: Vernon C. Ritchie
  • Patent number: 4283874
    Abstract: A muzzle loading firearm in which firing is effected by a shot shell primer positioned within an ignition chamber and fired through a loosely locked but protective cup.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: August 18, 1981
    Inventor: James C. Vaughn
  • Patent number: 4186506
    Abstract: A nipple for use in firearms employing percussion caps. The nipple includes an elongate body adapted at one end to receive a percussion cap, and adapted at its opposite end threadably to engage the ignition chamber housing of a firearm. A passage extending axially through the nipple includes a cylindrical primary section communicating with the cap-receiving end of the nipple, and a cylindrical constriction section communicating with the opposite end of the nipple body. These two sections intersect planar end faces of the nipple body substantially normal thereto. A cone-shaped section interconnecting the primary and constriction sections is dimensioned to have a greater volume and a lesser axial dimension than the constriction section.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: February 5, 1980
    Assignee: Michaels of Oregon Co.
    Inventors: Daniel E. Pawlak, deceased, by Catherine J. Pawlak, personal representative
  • Patent number: 4163335
    Abstract: A nipple usable to ignite a propellent charge in a firearm of the type which employs a percussive firing cap. The nipple includes an elongate body having, adjacent one end, a cap-receiving portion, and adjacent the opposite end, a mounting portion. Extending axially into the nipple, through the cap-receiving portion, is an elongate firing chamber. The outer surface of the cap-receiving portion is dimensioned to receive a firing cap, with the sides of the cap closely confronting such surface. A pair of diametrically opposed ports extend between and open to the firing chamber and to locations on the cap-receiving surface of the nipple, which locations are covered by the sides of the cap when the same is mounted in place.
    Type: Grant
    Filed: July 14, 1978
    Date of Patent: August 7, 1979
    Assignee: Michaels of Oregon Co.
    Inventor: Robert K. Ives
  • Patent number: 4135321
    Abstract: A firing nipple for use in muzzle loaded firearms comprises a duct of large internal diameter into which a cartridge shaped percussion cap can be inserted and a firing ridge against which the rim of the cartridge shaped cap is forced to ignite the cap.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: January 23, 1979
    Inventor: Michael Lewallyn
  • Patent number: 4123867
    Abstract: An insert sleeve for use in the firing system of a muzzle loading gun wherein the insert sleeve has a bore operably connecting the atmosphere to the bore of the gun barrel and having a conventional firing member operatively associated with the outer end of such insert sleeve. A nipple formed from a heat resisting metal is positioned in the sleeve at the inner end thereof and has a smaller diameter center portion than any other portion of the bore of the sleeve to form the limiting size connector opening from the firing means to the muzzle loader bore of the gun barrel.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: November 7, 1978
    Inventor: Marcus L. Peterson
  • Patent number: 4123866
    Abstract: To reduce the caliber of a muzzle-loading handgun, an inner barrel is inserted into the normal, outer barrel to which it is positively fastened only at the muzzle end. The rear end of the inner barrel adjoins a nipple, screwed into the breech portion of the outer barrel, which has a rearwardly projecting boss adapted to carry a percussion cap lodged in a recess of a hammer when the latter is uncocked. The nipple has a bore offset from or inclined to the barrel axis to reduce the reaction of the explosive charge upon the hammer when the percussion cap is detonated. The inner barrel fits tightly into the outer barrel in the vicinity of the nipple but is of reduced diameter over the greater part of its length for easier insertion.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: November 7, 1978
    Assignee: Firma Cuno Melcher KG ME-Sportwaffen
    Inventor: Gunter Wiethoff
  • Patent number: 4114303
    Abstract: A muzzle loading firearm in which firing is effected by a shot shell primer positioned within an ignition chamber.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: September 19, 1978
    Inventor: James C. Vaughn
  • Patent number: RE37968
    Abstract: An improved detonator assembly for a black powder firearm having a breech block, a receiver, and a nipple. The detonator assembly comprises a primer and a primer carrier. The primer carrier has an axial bore dimensioned to receive the primer at one end and slip over the firearm nipple at the opposite end. The primer carrier has a lip that abuts the breech block rear end. A tab laterally extends from the lip to provide a handle for installing and removing the assembly and a visual indication that the firearm is primed.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: January 28, 2003
    Assignee: The Marlin Firearms Company
    Inventors: William E. Osborne, Harold J. Waterman, Jr., David Findlay