Double-row ratchet locking mechanism with single-bypass (‘arming’) functionality

A ratchet mechanism comprising:

• (a) a first opposing disk and second opposing disk rotationally engagable about a longitudinal axis and being rotationally movable about the axis between an open position and a closed position, each disk having a plurality of engaging members disposed on opposing surfaces of each disk such that movement of the mechanism from the open position to the closed position causes opposing rotational movement of each disk relative to one another, wherein the plurality of engaging members maintains the opposing disks in the closed position upon movement of the ratchet from the open position to the closed position,
• wherein the plurality of engaging members are arranged as teeth radially disposed around each opposing surface, and wherein the engaging members of one of the first or second disks are arranged as concentric outer and inner circles, each circle being radially offset to the other;
• (b) a shaft having a first end and a second end, the shaft extending from the second disk along the longitudinal axis toward the first disk from the first end to the second end;
• (c) a resilient member arranged along the longitudinal axis between the first disk and the second end of the shaft, wherein application of force to the first end of the shaft along the longitudinal axis disengages the plurality of engaging members allowing opposing rotational movement of the disks from the closed position to the open position.