A school disposition. (Machine-translation by Google Translate, not legally binding)

摘要

A hatch arrangement that includes a hatch cover mounted for reciprocating movement along a coam to a first position in which the lid is disposed above a hatch mouth that is flanked on opposite sides and along minus one side extending transversely through the coaming, and a second position in which the lid has been moved laterally out of the hatch through the coaming on said transversely extending side, means for lowering and lifting the lid when in said first position a and outside sealing engagement with the coaming on said sides of the hatch mouth, a rack on the underside of the hatch cover, the rack of which extends parallel to the direction of the reciprocating movement of the lid, a motor driven pinion fixed in relation to, and disposed away from, the coaming of the hatch on said transversely extending side, and adapted for reciprocating engagement with the rack, and a spindle and slot drive mechanism comprising a shank and a slot provided one by an outer bracket on the lid and the other by the pinion or other rotating element driven by the motor, being such the arrangement that said spigot and slot are engaged in both the raised position and the lowered position of the hatch cover when the hatch cover is in said first position and function to move the hatch cover in both directions between said first position directly above the hatch mouth and a position in which the end of the rack that is closest to said transversely extending side is in drive engagement with the pinion. (Machine-translation by Google Translate, not legally binding)