Kusza - OSS Little Joe 1942-1945. Na stronie muzeum nie ma informacji i jedyne co znalazłem to ten opis. Więcej fotografii na stronie muzeum (15)
During WWII, as many of you probably already know, the American OSS (the predecessor agency to today's CIA) developed a whole series of experimental slingshot crossbows, such as the Big Joe 5, which were powered by 300 (150 per side) 1.5" I.D. x 3/32" x 3/32" rubber bands, all ganged-up and tied together into a bandset with strings (see blueprint below). These were pre-stretched to 100% or about 3". When drawn-out out to its full length, this generated an incredible 550 lbs draw weight, necessitating the inclusion of a built-in rack-and-pinion spanning device inspired by the medieval crannequin.