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The breechblock in a sliding block slides across the face of the breech to close it. 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 ...
Krupp used the approach to slide a wedge through the rear part of the gun, the so-called sliding wedge breech block. Up till 1864 the Krupp sliding wedge breech called simple breech had an almost square diameter, only the corners of the breech hole were a bit rounded. That year Krupp invented the cylindroprismatic (halbcylindrischen) type of ...
Although designated as 28 cm (11 in), its actual caliber was 28.3 centimeters (11.1 in). It used Krupp's horizontal sliding-block, or "wedge", as it is sometimes referred to, breech design rather than the interrupted screw commonly used in heavy guns of other nations. This required that the propellant charge be loaded in a metal case (usually ...
A falling-block action (also known as a sliding-block or dropping-block action) is a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon and is actuated by a lever. [1]
Meanwhile, the Prussian Navy had a 15 cm gun with double wedge breech and a weight of 60 Zentners (3,000 kg) changed for an increased charge. [18] This gun was tested in Fall 1868. In detail, it was a massive cast steel breechloader of 3050 kg including the double wedge breech block. The length of bore was 2,084 mm.
Vertical sliding-wedge breech block (see drawing) The breech block closes the chamber behind the propellant case. It also contains the firing pin assembly. Hydraulic recoil Two hydraulic pistons in the housing absorb the major shock of recoil as the housing moves back inside the slide (see picture). They also buffer the end of counter-recoil ...
In its final design the 28 cm Ring Kanone had a caliber of 283 mm. Measured in the grooves, this was 287 mm. It was 6,100 mm long. The rifling consisted of 36 parallel grooves which were 2 mm deep and 20.2 mm wide. The parts (fields) between the grooves were 4.5 mm wide. The gun weight 27,500 kg, including the 1,020 kg breech block. [2]
The Mk 12 Gun Assembly (pictured) was a semi-automatic, power rammed, vertical sliding-wedge breech block type gun. The Gun Assembly shown in the picture is the mount's right gun. The left gun is the mirror image of the right gun. Since this gun assembly fired semi-fixed ammunition, (pictured) each round was delivered to the guns in two pieces ...