Improvements in or relating to detachable pack parachute apparatus

摘要

490,798. Detachable parachute packs. AEROSTATICA AVORIO. Aug. 17, 1937, Nos. 22584 and 22585. Convention dates, Aug. 17, 1936 and April 28, 1937. [Class 4] A detachable pack parachute is adapted to be attached to a snap hook on a suspension strap permanently secured to a belt worn by the parachutist, the hook being temporarily located on the bolt by a frangible pin. The pin may pass through any one pair of the links of a chain forming part of an adjustable belt, the arrangement being such that the hook has slight freedom of rotation when secured thereby. Fig. 1 shows a suspension strap 3, which passes from the back of the wearer's belt 7, over the left shoulder, and of which the hook 1 is attached to an appropriate link 10, Fig. 2, of the belt 7 by a pin 8 adapted to shear when the parachute opens and the hook is urged upwardly and away from the body. The back of the pack cover is traversed by a double ended attaching member 14 apertured at one end for attachment of the rigging lines and at the other for engagement by hook 1. Guide pieces 15 embrace part 4 of the hook on engagement and limit rotational movement of the pack. Hook 1 is provided with a securing member 5 spring urged to the position shown in Fig. 1 and releasable by pressure on lug 6 thereof. Part 5 is so shaped that a pull on attachment member 14 tends to lock it. The pack cover comprises a rigid back portion 11, Fig. 1, provided with elastic bands serving to locate the folded rigging cords and with handles 13, Fig. 8. The pack is stowed ready for use in a cage 18, Fig. 7, comprising a tube element 18 shaped to the base of the pack and spaced by four struts 19 from straps 20 by which it is attached to the aircraft structure. The pack is secured by supports 21 and spring clips 22. Rubbing strips 23, Fig. 8, are fitted on the pack-base in positions to engage the elements 21, 22. The cage includes a lug 24 for the attachment of a static cord 25.