A copper friction tube would be inserted and a lanyard attached.
2.
The basement contains the gunner's mess, friction tubes and rockets.
3.
In comparatively modern times friction tubes have been used, while in the latest patterns percussion or electric tubes are employed.
4.
The original design for igniting the powder propellant charge involved the insertion of a standard artillery " T friction tube " into a hole near the base of the barrel.
5.
When cocked by pulling back and then released, it sprang forward and struck a firing lever on the breech, which translated the forward motion to a downward motion and propelled a firing plunger into the T of the friction tube which in turn ignited the cordite propellant charge.
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