The Inside of the Clamshell Doors
Above is a view of the interior of the Clamshell doors. The silver door on the right is the port door folded open. Below is the lower of two locking clamps fitted to the door.
The Clamshell Opening Mechanism on the ceiling of the Freight Bay. The electric motor (above) drives a screw shaft via a flexible coupling. The shaft moves the white bars (below left) forward and backward. These push or pull on the green bars (below right) which push the doors open or pull them shut.
A photograph of a clamshell being worked on.
Peter Langton took this in Aden circa 1961.
That’s one heck of a dummy the ‘Erk’ is sucking!