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File:RBL12pdr8cwtBarrel&BreechDiagram.jpg

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Description
English: Diagram of barrel and breech of British RBL 12 pounder 8 cwt field gun.

This shows the "New Model" with the short 72-inch barrel.

  • A : Barrel inner tube : originally of wrought-iron; made of steel in later 72-inch barrels.
  • B, C, D : wrough-iron coils
  • E : Tappet-ring
  • L : Lever-ring
  • P : Breech-piece : forging of wrought-iron
  • S : Breech-screw
  • T : Trunnion ring
  • V : Vent-piece incorporating a right-angled vent.
  • a : Powder chamber
  • b : Shot chamber
  • c : Grip : narrowing of bore to force lead coating on projectile to engage with rifling grooves
Date circa 1871
date QS:P,+1871-00-00T00:00:00Z/9,P1480,Q5727902
Source

Figure 33, page 48-52 in "The Principles and Practice of Modern Artillery" by Lt-Colonel C.H. Owen, R.A. published by John Murray, London, 1873


Downloaded from https://archive.org/details/principlespracti00owenrich
Author artist not identified. Assumed from UK government.
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(Reusing this file)

Crown Copyright expired (50 years)

Public domain
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This is because it is one of the following:

  1. It is a photograph taken prior to 1 June 1957; or
  2. It was published prior to 1974; or
  3. It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1974.

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Date/TimeThumbnailDimensionsUserComment
current12:59, 26 April 2011Thumbnail for version as of 12:59, 26 April 20111,000 × 312 (85 KB)Rcbutchercleanup background
06:10, 6 February 2009Thumbnail for version as of 06:10, 6 February 20091,000 × 312 (83 KB)Rcbutcherscaled to 1000pix, better for display
06:05, 6 February 2009Thumbnail for version as of 06:05, 6 February 20091,483 × 463 (84 KB)Rcbutcheruploaded a better image
09:09, 3 February 2008Thumbnail for version as of 09:09, 3 February 2008640 × 301 (39 KB)Rcbutcher{{Information |Description=Diagram of Barrel and breech of British RBL 12 pounder 8 cwt field gun. <br>Major Hall's caption : "Armstrong 12 pr 8 cwt RBL - Just forward of the hollow breech screw is the vent-piece, incorporating a right-angled vent." <br>F

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