Hatches for ships' holds

Claim 1

IN A HATCH COVER CONSTRUCTION FOR USE A HATCH HAVING A TRACK MEANS ALONG EACH SIDE OF THE HATCH OPENING, A ROLLING, FOLDING COVER ARRANGEMENT COMPRISING A WHEELED CARRIAGE HAVING OPPOSITE WHEELED SIDES AND A TOP ADAPTED TO EXTEND ACROSS THE HATCH OPENING TO BE SUPPORTED ON SAID TRACK MEANS, AT LEAST TWO FIRST HATCH COVER SECTIONS, MEANS PIVOTALLY CONNECTING ONE END OF EACH OF SAID FIRST SECTIONS TO SAID CARRIAGE FOR SWINGING MOVEMENT ABOUT AN AXIS TRANSVERSE OF THE HATCH OPENING, HYDRAULIC MOTOR ACTUATOR MEANS CONNECTED BETWEEN THE CRRIAGE AND THE RESPECTIVE FIRST SECTIONS FOR FOLDING THE SAME INTO UPRIGHT POSITION WHEREBY SAID CARRAIGE AND FIRST SECTIONS CAN BE ROLLED RELATIVE TO THE OPENING TO EXPOSE THE SAME, SAID WHEELED SIDES OF SAID CARRIAGE INCLUDING RAMP MEANS AND A SECOND PAIR OF HATCH COVER SECTIONS PIVOTED TO SAID FIRST HATCH COVER SECTIONS AND SUPPORT WHEEL MEANS ON THE EDGES OF SAID SECOND SECTIONS TO SUPORT SAID SECOND SECTIONS ON SAID TRACK MEANS, SAID WHEEL MEANS BEING ADAPTED TO ENGAGE AND ROLL UP ON SAID RAMP MEANS WHEN SAID FIRST SECTIONS ARE FOLDED UPWARDLY.