Abstract A latch lock assembly is provided which is formed of two spaced plates with pivotal levers disposed therebetween and wherein the plates are provided with a depending projection of a width and spacing and depth and extending from the bottom edge of the door which will fit into a keeper having parts shaped to exactly contain the projection on the latch lock assembly when the door bearing the latch lock is lowered to a locking position. A hooked lever lies within the assembly and between the plates and depends into the plate projections for engagement with one of two space rods in the keeper. When this projection lies within the keeper in a locked position it exactly fills the keeper opening so as to retain the door against lateral play, fore and aft movement and vertical movement either down or up and thereby rigidly retains the door in its locked and lowered position. The hook lever that extends into the projection spring biased toward an open position and is lifted and latched by a projection on a bell crank lever as the door is seated with the latch projection in the keeper. A turn handle having a cylinder lock extends through the door and into the latch assembly and has a work arm that engages with the bell crank lever that can be turned when the cylinder lock is opened with a key so as to release the bell crank lever from the hook lever and allow thereby the door to be elevated and the projection out of the keeper.
A lock latch for counterbalanced cargo carrying vehicle doors comprising a lock latch lever assembly adapted to be fixedly secured to the bottom run of a door, a lock handle connected to the assembly for effecting the release of the assembly, said lock latch assembly including spaced plates with projections depending from the lower edge of the door, a hook latch lever pivoted between the plates and extending downwardly between the depending projections thereof, and a keeper assembly comprising side members spaced from one another and spacing rod members lying between the spaced side members, said spacing rod members and side members providing a space for confining the lock latch assembly projection in width, depth and height and said hook latch lever adapted to engage one of the spacing members and when in engaged position said projection up to the bottom edge of the door is fully confined within the space provided in the keeper member so as to prevent horizontal and vertical movement in all six planes as taken through the faces of a cube.
Claim 2
Dependent Claim
176 words
A lock latch for counterbalanced cargo carrying vehicle doors comprising a lock latch lever assembly adapted to be fixedly secured to the bottom run of a door, a lock handle connected to the assembly for effecting the release of the assembly, said lock latch assembly including spaced plates with projections depending from the lower edge of the door, a hook latch lever pivoted between the plates and extending downwardly between the depending projections thereof, and a keeper assembly comprising side members spaced from one another and spacing rod members lying between the spaced side members, said spacing rod members and side members providing a space for confining the lock latch assembly projection in width, depth and height and said hook latch lever adapted to engage one of the spacing members and when in engaged position said projection up to the bottom edge of the door is fully confined within the space provided in the keeper member so as to prevent horizontal and vertical movement in all six planes as taken through the faces of a cube.
Claim 3
Dependent Claim
142 words
A lock latch for counterbalanced cargo carrying vehicle doors, as defined in claim 1, and said lock latch assembly secured to the door further including a bell crank lever having a shoulder projection and said hook latch lever having a shoulder portion engageable by the shoulder projection of the bell crank lever, spring biasing means extending between the two levers to normally urge the hook latch lever to a released position, and said handle having a work arm and engageable with an arm of the bell crank lever for effecting when turned release of the hook latch lever from the bell crank lever against the action of the spring and said handle having a cylinder lock for normally in the lock position prohibiting a turning movement of the handle and its work arm relative to the door and the lock latch assembly.
Claim 4
Dependent Claim
95 words
A lock latch for counterbalanced cargo carrying vehicle doors, as defined in claim 2 and said keeper assembly comprising angle section plates having depending sides forming said side members, said spacing members being round rods spaced apart the transverse width of the latch lock projection, said hook latch lever having an inclined slot for receiving the rod and said angle section members having flanges adapted to be seated in recesses in transversely extending rear edge rail of the vehicle floor and bolt and nut means for securing the keeper assembly to the rear floor rail.