Abstract: A gate assembly for closing and opening a bottom discharge opening of a railway car hopper, the gate assembly comprising upper and lower plates with cooperating wedges thereon wherein the hopper is provided with an elastomeric sealing ring about the discharge opening and the lower plate moves the upper plate evenly upwardly against the sealing ring, the wedges being spread over extensive vertically aligned areas of the plates so that upper plate is urged evenly upwardly into sealing contact about its borders with the sealing ring.

Abstract: This invention relates to a low profile collapsible hitch for use in securing a container or a trailer on a transport carrier having a vertical strut assembly having an upper end for supporting a king pin receiving plate and a lower end pivotally secured by a pivot mount assembly secured to a deck of the transport carrier, a diagonally extending strut assembly having an upper end pivotally connected to the upper end of the vertical strut assembly and having a lower end pivotally connected to a locking hook assembly which is slidable along the surface of the deck, an anchor for limiting the movement of the diagonal strut assembly during erection of said apparatus, a pair of lock blocks engageable by the locking hook assembly for locking the vertical strut assembly in erected position, the anchor and the lock blocks defining therebetween a path for reciprocal movement of the lower end of the diagonally extending support strut assembly, and release members associated with each of the lock blocks and cooperativel