Abstract: The invention is of a hatch assembly that includes a hatch cover adapted to seal a hatch opening defined by a raised combing of a deck. A locking arm having a hinge end and a lacth end extends across and beyond the hatch, and has a hatch clip adjacent each end to floatingly connect the locking arm to the hatch cover. A latch is mounted to pivot arms to engage latch engagement structure on the locking arm with a force dependent on the height of the pivot arms from the deck. An adjustment member includes tool bearing surfaces to enhance the rotation of the adjustment member and thereby adjust the force. A latch handle includes a stiffening member to strengthen the handle against forces tending to rotate the latch handle about the pivot arms. A pair of hinge bracket walls are mounted to the hatch combing and define a hinge bracket space between them. A stop is affixed to the bracket walls to prevent the hatch cover from contacting the horizontal deck surface.

Abstract: A hatch assembly that includes a hatch cover adapted to seal a hatch opening defined by a raised combing of a deck. A locking arm having a hinge end and a latch and extends across and beyond the hatch, and has a hatch clip adjacent each end to floatingly connected the locking arm to the hatch cover. A latch is mounted to pivot arms to engage latch engagement structure on the locking arm with a force dependent on the height of the pivot arms from the deck. An adjustment member includes tool bearing surfaces to enhance the rotation of the adjustment member and thereby adjust the force. A latch handle includes a stiffening member to strengthen the handle against forces tending to rotate the latch handle about the pivot arms. A pair of hinge bracket walls are mounted to the deck and define a hinge bracket space between them. A stop is affixed to the bracket walls to prevent the hatch cover from contacting the horizontal deck surface.

Abstract: The invention is directed to a venting device for admitting air into an enclosed container such as a railway car during discharge of material from the container. The device includes a securing member having an interlock for releasably retaining a replaceable filter member that is adapted to admit air into the container. The mounting member is adapted for mounting in an opening in the container member. A securing member has a one way interlook with the mounting member which may be overridden for disassembly and a releasable interlock with the filter member.