Young & Thompson
Anchorages
An anchorage has two members, one fixed the other at the end of a strap or other element to be secured, which hook together and which can then be manipulated so that there is virtually no chance of separation, particularly when there is a pull on the strap. One member, usually the fixed one, may be a stud of mushroom form while the other may be a D-shaped plate with the curved periphery extended out of the plane of the plate to form a U-shaped channel that can hook onto the head of the stud. But formations on the head and on the plate, or a wall around the stud, allows full engagement only in one direction, while after that mutual rotation through at least 90° makes the hooked member captive to the stud. The stud may be biased by its weight or a spring so that its head is normally lowered against the mouth of a socket, but is shaped so that it can be wedged up by the hook member as that is offered up.
C. N. Unwin Limited
B B B
B60P B64D B64D
inventional inventional inventional
Stuart Leslie
Mason