US1896051A - Shotgun cartridge - Google Patents

Shotgun cartridge Download PDF

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Publication number
US1896051A
US1896051A US577830A US57783031A US1896051A US 1896051 A US1896051 A US 1896051A US 577830 A US577830 A US 577830A US 57783031 A US57783031 A US 57783031A US 1896051 A US1896051 A US 1896051A
Authority
US
United States
Prior art keywords
pellet
container
metal
composition
tracer
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.)
Expired - Lifetime
Application number
US577830A
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English (en)
Inventor
Brownsdon Henry Winder
Nimmo Walter Rule
Pollitt George Paton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US1896051A publication Critical patent/US1896051A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/04—Cartridges, i.e. cases with propellant charge and missile of pellet type

Definitions

  • This invention relates to shot gun cartridges containing one or more pellets for indicating the path of the shot charge.
  • Such tracer pellets usually consist of a thin metal shell containing a compressed lightor smokeproducing composition adapted to be "ignited either by the powder gases gen erated when thecartridge is fired, or by concussion or friction against the shot.
  • This object is accomplished according to the invention by making a tracer pellet the component metallic parts of which become separated or disintegrated during or after the'flight of the pellet over the effective tracing range.
  • These component parts being much lighter than the pellet as a whole, have a much shorter range, e. g. 8 0100 metres as compared with 300 metres.
  • the invention consists, therefore, in a shot gun tracer pellet of the kind described, the
  • the metal container forming part of the pellet may be made of metal of relatively low melting-point which is fused during flight and thus becomes disintegrated of its own accord, or a thin metal container of relatively high melting point can be used in conjunction with a mass of metal of low meltingpoint which is fused during flight andthus becomes detached from the container.
  • the mass of metal of low melting-point may be located inside, or wholly outside, or partly inside and partly outside the contain-er, in the last case being thereby attached to the container, for example by forming a nose of metal of low melting-point upon a perforated shell of metal of relatively high melting-point, the first metal extending through the perforated shell into the interior of the same and overlapping the internal surface thereof.
  • the container may also be made in parts which are joined'together, for eXample along longitudinal or transverseseams, by means of solder or the like, which will melt during flight and permit the parts of the.
  • the pellet which is copper or brass, for example 0.037-005 cm.
  • the pellet is closed at one end by the plug f lead or alloy of low melting-point and the internal surface of the plug is preferably dished as shown, and a charge 3 of tracing composition, e. g., barium peroxide/magnesium, gunpowder/magne sium, or strontium nitrate, is pressed thereon.
  • tracing composition e. g., barium peroxide/magnesium, gunpowder/magne sium, or strontium nitrate
  • a layer 4 of lightly pressed priming composition which may be the same material as the tracing composition 3 if the pellet is to be ignited by the powder gases; alternatively where the pellet is to be ignited by percussion or friction, the layer 4 may consist of a priming composition sensitive to percussion or friction, such as for example a mer cury fulminate composition as used in percussion caps.
  • the pellet as a whole may weigh, for example 1.31.6 grams, including say 0.16 grams of heavily pressed tracer composition and 0.03 grams of lightly pressed composition for priming purposes.
  • the plug 2 When such a tracing pellet is fired from a shot gun, by the time the burning pellet has travelled, for the desired tracing range, which may be to 100 metres, the plug 2 willhave melted owing to the heat developed by the burning, and will have become separated from the container 1.
  • alloys of very low meltingpoint e. g. below 100 C. should be used.
  • the range travelled before disintegration occurs may be regulated by varying the composition, i. e. the melting-point, shape and thickness 'of the plug 2. lVhen the pellet contains only comparatively small amounts of tracing composition, the melting-point of the fusible plug should bechosen correspondingly low so as to ensure fusion taking place.
  • the arrangement of the pellet is the same as in- Figure 1, except that a charge-5 of gun-powder or other explosiveis located between the plug 2 and the ntracing composition 3/ A centrally perfo- 2.o
  • rated disc6 separates the tracing composition 3' from the explosive 5, and the latter is ignited when th tracing composition is nearly consumed, i. e. when the pellet has nearly reached the end of its effecting tracing path.
  • the plug 2 need notbe made of fusible metal, but it is preferable to make it of such, although alloys of very low melting-point are not required as there is no possibility of the molten metal adhering to the container as in the case of Figure 1.
  • the thin metal container 1 is embedded in a hollow plug 2 of fusible metal, the side walls of the container being thus covered with a thin layer of the fusible metal.
  • the arrangement of the fusible-metal on the exterior of the container reduces the tendency for the molten metal to adhere to the same.
  • the container. 1 is dispensed with and the fusible metal-shell alone acts as container; in this'case fair results areobtained if powder gas ignition is used, but the contamer is took weak to stand percuss on ignition.
  • the thin metal con tainer 1 is somewhatshorter in length than that illustrated in Figure 1, and the base is perforated centrallyso that the plug 2 of fusible metal may be pressed in a die over the base of the container and the soft metal will flow through the perforation and form a rivet headinside the container as shownat 7.
  • the tracing composition 3 and primer 4 are arranged as in Figure 1.
  • the container may be made in parts which are joined together, for
  • a shot gun tracer pellet comprising a metallic portion, and means causing-said metallic portion to disintegrate during flight and thereby reduce the range of the pellet and enable it to approximate that of ordinary shot.
  • a shot gun tracer pellet which comprises a metal container of low melting-point which is fused during flightand thus becomes disintegrated of its ownaccord.
  • a shot gun tracer pellet which comprises a thin metal container of "relatively. high melting-point and a mass of metal of lowmelting-point which is fused during flight and thus becomes detached from the container.
  • a shot gun tracer pellet having a range approximating that of ordinary shot,,com
  • a shot gun tracer pellet comprising'a compressed tracing composition, a metallic portion, and anexplosive charge. adapted to disintegrate the said metallic portion when the tracer composition is nearly consumed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Powder Metallurgy (AREA)
US577830A 1930-11-29 1931-11-28 Shotgun cartridge Expired - Lifetime US1896051A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1896051X 1930-11-29

Publications (1)

Publication Number Publication Date
US1896051A true US1896051A (en) 1933-01-31

Family

ID=10893078

Family Applications (1)

Application Number Title Priority Date Filing Date
US577830A Expired - Lifetime US1896051A (en) 1930-11-29 1931-11-28 Shotgun cartridge

Country Status (4)

Country Link
US (1) US1896051A (en(2012))
BE (1) BE384267A (en(2012))
DE (1) DE550397C (en(2012))
FR (1) FR726931A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316031A (en) * 1987-08-25 1994-05-31 Brazelton Carl L Valve with independent control of discharge through plurality of orifices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316031A (en) * 1987-08-25 1994-05-31 Brazelton Carl L Valve with independent control of discharge through plurality of orifices

Also Published As

Publication number Publication date
FR726931A (en(2012)) 1932-06-04
DE550397C (de) 1932-05-18
BE384267A (en(2012))

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