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Rolling-block breech Joseph Rider's 1865 patent drawings. A rolling-block action is a single-shot firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin. [1] The breechblock is shaped like a section of a circle.
Rolling-block breech. The Remington Rolling Block was developed from the 1863 pattern .50 calibre split breech carbine issued to the US Cavalry during the American Civil War. This earlier weapon was designed by Joseph Rider and Leonard Geiger to fire the same cartridges as the Spencer carbine. [12]
A rolling-block can be described as a quadrant which is hinged below the breech. The quadrant rotates through approximately 90° to provide access to the breech or close the breech. In the closed position, a number of different devices can be used to lock the quadrant and prevent it from opening.
The 12.17 mm caliber was chosen because the Swedish army had approximately 30,000 new muzzle-loading M1860 and breech-loading M1864 rifles in 12.17 mm caliber in stock, rifles that were suitable for conversion to M1867 rolling-block rifles.
In a rolling block action, the breechblock takes the form of a part-cylinder, with a pivot pin through its axis. The operator rotates or "rolls" the block to open and close the breech; it is a simple, rugged, and reliable design.
The Remington rolling block breech-loading rifle design was widely used by many armed forces throughout the world and was widely popular with sportsmen as a hunting rifle, with over 1 million copies manufactured in total. Remington model 1871 rifles are specified for the Shield of Arms in the flag of Guatemala. See Flags of the World
Falling-block action military rifles were common in the 19th century. They were replaced for military use by the faster bolt-action rifles, which were typically reloaded from a magazine holding several cartridges. [2] A falling-block breech-loading rifle was patented in Belgium by J. F. Jobard in 1835 using a unique self-contained cartridge. [3]
Springfield Model 1870 (center) The Springfield Model 1870 was one of the rifles which used the trapdoor breechblock design developed by Erskine S. Allin. The Model 1870 was a minor improvement to the Springfield Model 1868, and retained most of the Model 1868 rifle features.