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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]
The Stevens Boys Rifles were a series of single-shot takedown rifles produced by Stevens Arms from 1890 until 1943. The rifles used a falling-block action (sometimes called a tilting-block, dropping-block, or drop-block) and were chambered in a variety of rimfire calibers, such as .22 Short, .22 Long Rifle, .25 Rimfire, and .32 Rimfire.
Centrifugal casting, or centrifuging, [1] is used as a means of casting small, detailed parts or jewelry. [2] An articulated arm is free to spin around a vertical axle, which is driven by an electric motor or a spring. The entire mechanism is enclosed in a tub or drum to contain hot metal should the mold break or an excess of metal be used.
The Farquharson Rifle is a single-shot hammerless falling-block action rifle designed and patented by John Farquharson (1833-1893), [1] of Daldhu, Scotland in 1872. George Gibbs, a gun maker in Bristol, became a co-owner of the Farquharson patent in 1875 and was the sole maker of Farquharson rifles until the patent expired.
The Tarpley carbine: This is categorized into falling block action, but the breech block is hinged, unlike the others. The Morse Carbine: This mostly brass action is somewhat like the Hall rifle, except it was designed to take a special centerfire cartridge. Very few of these were actually made; all were constructed in the late 1850s.
The sliding action is perpendicular to the axis of the barrel. When the breechblock slides down to expose the breech, it is referred to as a falling-block, as used in the Sharps rifle. A sliding block is common in artillery. A vertical sliding block rises and falls while a horizontal sliding block slides to one side. It is a strong design.
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Molten metal before casting Casting iron in a sand mold. In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a mold (usually by a crucible) that contains a negative impression (i.e., a three-dimensional negative image) of the intended shape.