Interrupted screw

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.

  1. ^ 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.

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