초록 ▼

A railway hopper car has a hatch opening defined by its upper deck surface. A hatch cover is adapted to close the hatch opening. A hinge arrangement is connected with the upper deck surface and a locking arm extends from the hinge arrangement and across the hatch cover, being connected to the hatch

A railway hopper car has a hatch opening defined by its upper deck surface. A hatch cover is adapted to close the hatch opening. A hinge arrangement is connected with the upper deck surface and a locking arm extends from the hinge arrangement and across the hatch cover, being connected to the hatch cover. The hinge arrangement has a stop thereon which supports the hatch cover when it is pivoted open. The locking arm has a hatch engagement portion on the end opposite the hinge arrangement which is engaged by a latch structure connected with the upper deck surface. The latch structure includes a pivoting latch holder and latch which may be engaged with the latch engagement portion and rotated in one direction to seal the hatch cover and rotated in the opposite direction to unseal the cover. When the latch is rotated to unseal the cover, any excess pressure in the car causing the hatch cover to rise will rotate the latch holder into an extended position where the hatch cover is retained loosely over the hatch opening, and the pressure is allowed to escape. The link has a pivotal connection with the coaming bracket to provide for complete disengagement of the cover from the hatch. The pivotal connection is eccentrically mounted in a cylindrical adjustment member secured by a set screw. Selective rotation of the cylindrical member adjusts the tightness of the hatch cover seal over the hatch opening.

대표청구항 ▼

A hatch cover arrangement for a lading container having a deck means and a hatch opening in said deck means, the hatch cover arrangement comprising: a hatch cover adapted to cover the hatch opening; a hinge structure fixedly associated with the deck means and operatively associated with the hatch co

A hatch cover arrangement for a lading container having a deck means and a hatch opening in said deck means, the hatch cover arrangement comprising: a hatch cover adapted to cover the hatch opening; a hinge structure fixedly associated with the deck means and operatively associated with the hatch cover to provide hinged movement thereof with respect to said hatch opening; a hook-shaped latch engagement member operatively associated with the hatch cover; said hook shaped latch engagement member comprising a mounting portion operatively associated with the hatch cover, a first portion connected with the mounting portion and extending generally downwardly therefrom, and a second portion connected with the first portion and extending generally laterally therefrom substantially below said mounting portion; said second portion having a contact surface portion thereon and the contact surface portion and the mounting portion defining a space therebetween; a latch mounting bracket fixedly associated with the deck means; link means pivotally connected with the latch mounting bracket; a latch holder having pivot means connecting with the link means; a latch member on the latch holder spaced from the pivot means and adapted to engage with the contact surface portion whereby the latch holder may be rotated to seal the hatch cover over the hatch opening and whereby when the latch holder is rotated, unsealing pressure in the lading container will cause the latch engagement member to rise and to rotate the latch holder and latch member into an extended position, retaining the hatch cover and allowing the pressure in the lading container to escape.