BEANO T-13 Hand Grenade - USA - experimental

The BEANO T-13 hand grenade was an experimental grenade developed by the Office of Strategic Services (which later became the CIA), with assistance from Eastman Kodak Corporation, in the later years of World War II.

The concept for the BEANO hand grenade was that a spherical grenade the size and weight of a common baseball would be effective in the hands of American troops. The designers believed that by emulating a baseball, any young American man should be able to throw the grenade with accuracy and distance properly.

The final design for the T-13 hand grenade utilized a pressure trigger as well as an in-flight arming device. The grenade was designed to be thrown as a traditional baseball, and as such it was held with two fingers on a weighted and knurled "butterfly cap" and the arming pin was removed. Once thrown, the cap detached from the body of the grenade, and a length of nylon string unwound until a secondary arming pin attached to the far end of the cord was pulled, arming the grenade to detonate upon impact with a hard surface. While the original design called for a 5.5 oz (160 g) total weight, it was later decided that this was too light and the weight was increased to 12 oz (340 g).

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