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Object Title

Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt

Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt

Date

1850-1870

Object Number

XIX.506

Provenance

Rescued from a car park in Ireland where it was being used as a bollard.

Physical Description

The large assemblage at the breech - essentially two spheres with handles - comprises the Armstrong "screw" breech mechanism. This unique method of breech loading used a heavy block called a vent-piece - a block of iron or steel that closes the end of the bore after loading - placed in a vertical slot in the barrel behind the chamber once the projectile and bag charge have been loaded. This was then manually screwed tight against the vent-piece. Obturation or gas sealing was provided by a metal cup on the front of the vent-piece. To fire, a vent tube was inserted into the top of the vent-piece and initiated. The wooden assemblage for Haxo deployment comprises a sliding carriage and traverse.

Featured in

Techniques

Built-up construction

Materials

Dimensions

Weight: 72 cwt

Firearms/Artillery

Serial Number RGF56B

Calibre

99.5 in

Associations

Places Britain
Thumbnail image of Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt On a sliding carriage and traverse. Also known as the 'Armstrong gun' and the'Light 110-pounder'.
The barrel comprises a series of tubes and coils shrunk on an inner rifled tube.
Thumbnail image of Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt On a sliding carriage and traverse. Also known as the 'Armstrong gun' and the'Light 110-pounder'.
The barrel comprises a series of tubes and coils shrunk on an inner rifled tube.
Thumbnail image of Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt On a sliding carriage and traverse. Also known as the 'Armstrong gun' and the'Light 110-pounder'.
The barrel comprises a series of tubes and coils shrunk on an inner rifled tube.
Thumbnail image of Gun and carriage - Rifled Breech Loading 7 inch gun of 72 cwt On a sliding carriage and traverse. Also known as the 'Armstrong gun' and the'Light 110-pounder'.
The barrel comprises a series of tubes and coils shrunk on an inner rifled tube.