The device consists of members 1, 2, 3, 4, 5, 6 and 7 having the same general shape. When eight equal and parallel loads P are applied to members 1, 2, 3 and 4, support A is subject to a load equal to 8P. Hinges F and G of member 7 are subject to loads of 4P. Hinges B, C, D and E are subject to loads of 2P.
$535$SL,FD$