US1356840A - Projectile - Google Patents

Projectile Download PDF

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Publication number
US1356840A
US1356840A US408385A US40838520A US1356840A US 1356840 A US1356840 A US 1356840A US 408385 A US408385 A US 408385A US 40838520 A US40838520 A US 40838520A US 1356840 A US1356840 A US 1356840A
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US
United States
Prior art keywords
projectile
copper
driving band
bore
tin
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
US408385A
Inventor
Ulrich Wilhelm
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
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 Krupp Stahl AG filed Critical Krupp Stahl AG
Priority to US408385A priority Critical patent/US1356840A/en
Application granted granted Critical
Publication of US1356840A publication Critical patent/US1356840A/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
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)

Description

W. ULRICH.
PROJECTILE.
APPLICATION FILED SEPT- 4. I920.
Patented Oct. 26, 1920.
gr s'r rs PATENT O-FFHQE.
WILHELM ULRICH, OF ESSEN, GERMANY, ASSIGNOR TO FRIED KRUPP AKTIEN- G-ESELLSCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.
PROJECTILE.
Specification of Letters Patent.
Patented Oct. 26, 1920.
Application filed September 4, 1920. Serial No. 408,385.
. German Republic, have invented a certain new and useful Improvement in Projectiles, of which the following is a specification.
The invention relates to projectiles fitted with a copper driving band. lVhen projectiles of this kind are fired from a gun. a small portion of the hot powder gases escapes past the driving band and heats the outer layer of the copper up to a point where it becomes comparatively soft, so as to leave a thin film of copper on the wall of the bore of the gun barrel. In course of time, this deposit of copper can under certain circumstances become so considerable as to exercise an unfavorable influence on the movement of the projectile. The invention proposes to remedy this drawback.
The invention will be described with reference to the accompanying drawing which A ring (G) made of tin of the driving band, the outside diameter of the ring (G) being slightly smaller than the diameter ofthe gun-bore measured across the lands.
As experiments have shown, the presence of the tin ring (C) reduces the deposit of copper in the bore to a very slight amount.
This effect is probably due to the tin being vaporized by the hot powder gases surrounding it, whereby the gases escaping past the driving band are deprived of a great part of their heat. The gases, after having beencooled in this manner, are no longer capable of heating the driving hand up to the point where its outer layer is able to form an appreciable deposit of copper on the wall of the gun-bore.
What I claim is: V A projectile having a copper driving band and a ring made of tin arranged in rear of the driving band. The foregoing specification signed at Ger many, this 15th day of June, 1920.
' WILHELM ULRICH. In presence of HANS Go'rTsMANN, Josnr OLBERTZ.
US408385A 1920-09-04 1920-09-04 Projectile Expired - Lifetime US1356840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US408385A US1356840A (en) 1920-09-04 1920-09-04 Projectile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408385A US1356840A (en) 1920-09-04 1920-09-04 Projectile

Publications (1)

Publication Number Publication Date
US1356840A true US1356840A (en) 1920-10-26

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Family Applications (1)

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US408385A Expired - Lifetime US1356840A (en) 1920-09-04 1920-09-04 Projectile

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454801A (en) * 1945-04-23 1948-11-30 Harold H Himmer Rotating band
ES2167147A1 (en) * 1998-04-24 2002-05-01 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
US20120266881A1 (en) * 2009-10-07 2012-10-25 Alcmair Partners Bv Method and apparatus for the removal of anaesthetic agents from breathing gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454801A (en) * 1945-04-23 1948-11-30 Harold H Himmer Rotating band
ES2167147A1 (en) * 1998-04-24 2002-05-01 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
US6827020B2 (en) 1998-04-24 2004-12-07 Rheinmetall W & M Gmbh Spin-stabilized projectile having a multi-part guide band and method of making the projectile
US20120266881A1 (en) * 2009-10-07 2012-10-25 Alcmair Partners Bv Method and apparatus for the removal of anaesthetic agents from breathing gas

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