The Double Cylinder, No 8 and No 9hand grenades were early designs used by the British in World War I. A WWII-era pineapple fragmentation hand grenade A hand grenade is a hand-held bomb designed to be thrown by hand. ... World War I was primarily a European conflict with many facets: immense human sacrifice, stalemate trench warfare, and the use of new, devastating weapons - tanks, aircraft, machineguns, and poison gas. ...
Overview
The Jam-Tin (or Double Cylinder) was one of the many grenades designed for British use in the early part of the First World War in response to the failings of the No 1 grenade. No 1 Grenade Type Hand grenade Nationality United Kingdom Era World War I Platform Individual Target Personnel History Date of design Production period Service duration Operators United Kingdom War service World War I Specifications Type Fragmentation Filling Detonation Impact Weight g Filling weight g Length mm Diameter mm Variants Mk. ...
The grenade was an inner can of explosive with an outer can of metal fragments or ball bearings. The heavy pattern No 9 grenade contained more HE and more shrapnel.
The fuse was ignited by a friction device (or a cigarette)
Initially when demand for grenades was at its greatest, engineers were encouraged to improvise their own grenades from the tins containing the soldier's ration of jam, hence the name. Incidents with the improvised form and the supply of superior grenades led to official withdrawal of the design.
The Jam-Tin (or Double Cylinder) was one of the many grenades designed for British use in the early part of the First World War in response to the failings of the No 1 grenade.
Initially when demand for grenades was at its greatest, engineers were encouraged to improvise their own grenades from the tins containing the soldier's ration of jam, hence the name.
Incidents with the improvised form and the supply of superior grenades led to official withdrawal of the design.
Designed by Capt. R.S. Gammon MC of the 1st Parachute Regiment, the Gammon bomb was developed as a replacement for the temperamental "sticky bomb" grenade.
When the gammon grenade was thrown, a linen tape with a curved lead weight on the end automatically unwrapped in flight, freeing a ball-bearing inside the fuze.
In this manner the allways fuze was armed in flight and the grenade exploded on impact.
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