Mechanical device used to effect a closure using a partial rotation
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Breech from Russian 122 mm M1910 howitzer, modified and combined with 105 mm H37 howitzer barrel
An interrupted screw or interrupted thread is a mechanical device typically used in the breech of artillery guns. It is believed to have been invented in 1845.[1]
The system has also been used to close other devices, including the joint between helmet (bonnet) and breastplate (corselet) of standard diving suit helmets, and the locks of diving chambers.
^Bunch, Bryan; Bunch, Bryan H.; Hellemans, Alexander (2004). The History of Science and Technology: A Browser's Guide to the Great Discoveries, Inventions, and the People who Made Them, from the Dawn of Time to Today. Houghton Mifflin. p. 355. ISBN 978-0-618-22123-3.
An interruptedscrew or interrupted thread is a mechanical device typically used in the breech of artillery guns. It is believed to have been invented...
the interruptedscrew design and patented it in the year 1900. Anderson observed that in the continuous flighting arrangement of a compression screw, there...
necessitating a long screw to achieve a strong lock. Efficiency is gained with multiple thread step heights on an interruptedscrew because the smaller...
further complicated by the need to screw and unscrew the breech as quickly as possible; this was met by the "interrupted thread" breech block, where the...
indicated by the pointer. Perhaps a variation on the rotating bolt, an interruptedscrew provides greater strength than simple lugs while requiring only a...
and a new breech mechanism. Uniquely it was the sole 'slow-cone' interruptedscrew mechanism to enter US service after 1920. The ballistics of the adopted...
use cartridges, the problem was solved by the development of the interruptedscrew. Breech-loading swivel guns were invented in the 14th century. They...
the army’s Osaka Arsenal. The original Type 38 gun had a conical interruptedscrew, a single box type trail which limited gun elevation to only 16°30'...
allowing for rapid emplacement. The breech is operated manually via a screw type mechanism that rests low in an ergonomic position. The M198 fires separate-loading...
Shell high explosive Calibre 155 mm (6.10 in) Breech Semi-automatic interruptedscrew Carriage Split trail Elevation −3° to +75° Traverse Up to 15°: 82°...
Shell 155 mm NATO Caliber 155 mm 39 calibre Breech Full automatic Interruptedscrew with electronic rammer and semi-auto loader Elevation -5°/+75° Traverse...
A dewatering screw press is a screw press that separates liquids from solids. A screw press can be used in place of a belt press, centrifuge, or filter...
Gun Model 1909 was a breech-loaded howitzer made of steel with an interruptedscrew breech and used fixed quick-fire ammunition. It had a box trail carriage...
the First World War (and most other large artillery), the M1 uses a Welin screw for its breech. The carriage was the same as used for the US 155 mm gun...
(160 kg) separate loading, bagged charge Caliber 240 mm (9.4 in) Breech Interruptedscrew Recoil Hydro-pneumatic Carriage Split trail with 2 transport wagons...
of tightening the barrel to the receiver (a dual-sided nut with an interrupted-screw threading rides inside the opening in the front of the receiver and...
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