US1380172A - Self-propelled projectile - Google Patents

Self-propelled projectile Download PDF

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Publication number
US1380172A
US1380172A US270687A US27068719A US1380172A US 1380172 A US1380172 A US 1380172A US 270687 A US270687 A US 270687A US 27068719 A US27068719 A US 27068719A US 1380172 A US1380172 A US 1380172A
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US
United States
Prior art keywords
projectile
chamber
propellant
self
gun
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
US270687A
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English (en)
Inventor
Charles G Abbot
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.)
Individual
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Individual
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Filing date
Publication date
Priority to GB135403D priority Critical patent/GB135403A/en
Application filed by Individual filed Critical Individual
Priority to US270687A priority patent/US1380172A/en
Application granted granted Critical
Publication of US1380172A publication Critical patent/US1380172A/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
    • 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

  • a further object of my invention is to provide a selfpropelled projectile of the type mentioned 1n whichmeans is provided for preventing a circulatory movement of the gases within the chamber which contains the propellant, j thus, increasing the reactive force of the gases.
  • a further object of my invention is to provide a projectile containing therein a propellant, the walls of the projectile itself aiding in resistingthe bursting effect oithe charge, and thereby permitting the use of the projectile in smooth-bore guns of relatively light weight, since the ypropelling force, .in addition to being resisted by the walls of the projectile, is applied gra l and not suddenly, as inthe case of the ordinary projectile, which is discharged by propellants contained entirely within the gun..
  • Flgure 1 1s a sectional view through one form of the projectile and through a portion of a smooth-bore gun; v
  • Fig. 2 is a rear view ofthe projectile
  • Fig. 3- is a view partly in section, of the projectile as used in a trench mortar
  • Fig. 4 is a side view of a modied form of the device, the Anlagenr part being shown in section;
  • Fig. 5 is a rear view shown in Fig. 4; and F Figf is a'section along the line 6-6 of
  • the present' invention relates to a projectile for use with smooth-bore guns in which the full force of the propellant contained within the projectile is utilized in propelling 'the projectile forwardly and in rotating it while within the gun.
  • 1 indicates the gun which is provided with a smooth bore 2 and, in the present instance, withj'a priming passage 3.
  • the projectile illustrated is a shell 4,. having a chamber 5 for the ⁇ bursting charge, and a chamber 6 for the propellant. Any suitable means may be. used for i niting thel bursting charge.
  • Any suitable means may be. used for i niting thel bursting charge.
  • I have lndicased an igniting device which ma' be a time'fuse, a centrifugally operated lgniter, or any other suitable ignition *means
  • the chamber 6 is closed by means of a screwplug 8, which fits in a threaded opening 9, at the rear of the projectile.
  • This screw plug may contain any suitable means for igniting the propellant within thechamber 6, as for instance, a percussion cap 10, which may ⁇ communicate by means (not shown) with thev propellant.
  • passages l1. '. These, passages are arranged tangentially to the walls of the chamber 6, z'. e., they are tangent to a circle whose center is in the axis of the shell.
  • passages 7 are preferably enlarged at their,
  • the projectile with its charge of propellant 13 is placed in the smooth-bore gun.
  • the propellant is ignited as, for instance, by means of apriming chargeA introduced through the priming passage 3, the gases passing rearwardly through the bores 11 generate a pressure which drives the projectile forwardly and at the same time the projectile is rotated on its axis while within the gun.
  • the charge of propellant is proportioned so that its force is expended before the projectile leaves the gun, the pressure tending to drive the projectile forwardly is developed gradually and during this development of the pressure the walls of the projectile itself tend to'resist lateral forces.
  • a projectile of 'this type i. e., a self-propelled projectile, may be used in a smooth-bore 'gun of much lighter weight than when the propelling charge is disposed entirely outside o f the projectile. This is an important advantage,
  • the bores 11 be conical shaped or enlargedtoward their rear ends. I have found, by experiment, that unless baffles are used withinthe vchamber to provide resistance elements, the maximum propelling and rotating force cannot be attained.
  • baves 12' which are disposed longtudinally with respect to the axis of the projectile instead of transversely.
  • the plug 8 is not provided' with an igniting means, the bores 11 being designedv to furnish means for igniting the' propellant within the chamber 6. f
  • My improved projectile is -.especially adapted for use with trench .mortars
  • I have illustrated-a trench mortar15 into which a projectile 16 has been dropped.
  • the propellant within the projectile is de signed to be actuated by the striking of the cap 10 against lthe interior bottom of the mortar.
  • the projectile is discharged and is rotated to insure true flight in the manner already described.
  • a self-propelled projectile having a chamber, a propellant disposed within the chamber, the body portion of the projectile and being tangent to the walls of the chamber, and means within the chamber for pre- I venting circulatory currents therein.
  • a self-propelled projectile having a chamber, the body portion of the projectile being provided with a plurality of coneshaped bores extending from the chamber to the rear end of the projectile, said bores being tangent to the walls of the chamber, and a plurality of baflies within the chamber for preventing circulatpry currents therein.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US270687A 1919-01-11 1919-01-11 Self-propelled projectile Expired - Lifetime US1380172A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB135403D GB135403A (enrdf_load_stackoverflow) 1919-01-11
US270687A US1380172A (en) 1919-01-11 1919-01-11 Self-propelled projectile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US270687A US1380172A (en) 1919-01-11 1919-01-11 Self-propelled projectile

Publications (1)

Publication Number Publication Date
US1380172A true US1380172A (en) 1921-05-31

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US270687A Expired - Lifetime US1380172A (en) 1919-01-11 1919-01-11 Self-propelled projectile

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US (1) US1380172A (enrdf_load_stackoverflow)
GB (1) GB135403A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468795A (en) * 1944-10-11 1949-05-03 Winters Starling Flare
US2504648A (en) * 1941-10-25 1950-04-18 Edward F Chandler Projectile
DE1032128B (de) * 1941-08-26 1958-06-12 Wasagchemie Ag Verwendung einer ausschliesslich vorschiebenden Rueckstosstreibladung fuer den Abschuss eines fluegelstabilisierten Raketengeschosses
US4886223A (en) * 1988-05-31 1989-12-12 Honeywell Inc. Projectile with spin chambers
US9851186B2 (en) * 2015-03-23 2017-12-26 James F. Brown High spin projectile apparatus for smooth bore barrels
US10591263B2 (en) 2015-03-23 2020-03-17 Brown James F High spin projectile apparatus comprising components made by additive manufacture

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032128B (de) * 1941-08-26 1958-06-12 Wasagchemie Ag Verwendung einer ausschliesslich vorschiebenden Rueckstosstreibladung fuer den Abschuss eines fluegelstabilisierten Raketengeschosses
US2504648A (en) * 1941-10-25 1950-04-18 Edward F Chandler Projectile
US2468795A (en) * 1944-10-11 1949-05-03 Winters Starling Flare
US4886223A (en) * 1988-05-31 1989-12-12 Honeywell Inc. Projectile with spin chambers
US9851186B2 (en) * 2015-03-23 2017-12-26 James F. Brown High spin projectile apparatus for smooth bore barrels
US10591263B2 (en) 2015-03-23 2020-03-17 Brown James F High spin projectile apparatus comprising components made by additive manufacture
US10996033B2 (en) 2015-03-23 2021-05-04 Brown James F Projectile apparatus for smooth bore barrels

Also Published As

Publication number Publication date
GB135403A (enrdf_load_stackoverflow)

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