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Welin breech-block of a 16-inch Mk 6 gun on USS Alabama (BB-60), 1943. Note the four separate thread "steps" on the block which engage with matching steps in the breech when the block is swung up and inwards and rotated slightly clockwise
The Welin breech block was a revolutionary stepped, interrupted thread design for locking artillery breeches, invented by Axel Welin in 1889 or 1890. Shortly after, Vickers acquired the British patents. Welin breech blocks provide obturation for artillery pieces which use separate loading bagged charges and projectiles. In this system the projectile is loaded first and then followed by cloth bags of propellant.
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The Welinbreechblock was a revolutionary stepped, interrupted thread design for locking artillery breeches, invented by Axel Welin in 1889 or 1890. Shortly...
solved this problem in 1889–1890 with his stepped interrupted screw Welinbreechblock. This had threads in sets of steps of increasing diameter so that...
Welin is a surname that may refer to: Anna Welin (born 1994), Swedish footballer Axel Welin (1862–1951), Swedish inventor Welinbreechblock, design for...
to Sweden. The Welin Davit Company continues today as Welin Lambie, based at Brierley Hill in the West Midlands, UK. Welinbreechblock Michael Davie:...
adaptation of the interrupted screw breech plug, which was later further improved by Axel Welin in 1890 as the Welinbreechblock and adopted by the Swedish....
Welin solved this problem with his stepped interrupted screw design: the Welinbreechblock of 1890. This design has threads of the block and breech cut...
A breechblock (or breechblock) is the part of the firearm action that closes the breech of a breech loading weapon (whether small arms or artillery) before...
which consisted of an A tube, two layers of reinforcing tubes and a Welinbreechblock. The initial order for eight Vickers Mk B guns served aboard the Russian...
steam engine – James Watt Wedgwood porcelain – Wedgwood family Welinbreechblock – Axel Welin Wellington boot – Duke of Wellington Wells turbine – Alan Arthur...
introduction of the stepped screw in the Welinbreechblock of 1889, which greatly increased the load-bearing surface of the breech, allowing them to be made shorter...
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