Leveling device with an adjustable width

1. A device for leveling the coal filled in the retort of a coke oven, comprising a leveler bar ( 2 ) connected with a leveler drive ( 1 ) and drivable into and out of the retort ( 4 ) through a leveling opening ( 3 ) and performing a leveling movement back and forth in the retort ( 4 ) whereby the leveler bar ( 2 ) has a rake blade ( 5 ) at its front end, the span width of which is adjustable by an operating device ( 6 ) arranged in the leveler bar ( 2 ), characterized in that the rake blade ( 5 ) is comprised of two wings ( 7 , 7 ′) swivel-mounted on the front end of the leveler bar ( 2 ) and resting against the leveler bar ( 2 ) in the form of a plow as the latter is being driven in and out through the leveling opening ( 3 ), and being unfoldable in the retort ( 4 ) by a setting movement of the operating device ( 6 ); and that the inside surfaces ( 13 ) of the rake blade ( 5 ) are arranged at an acute angle in relation to the outside surface ( 12 ) of the rake blade ( 5 ), whereby each apex of the angle is located at the outer end of the rake blade ( 5 ), and whereby the angle is selected in such a manner that coal is pushed by the extended rake blade ( 5 ) toward the lateral oven walls as the leveler bar ( 2 ) is being driven backwards.

2. The device according to claim 1 , characterized in that the wings ( 7 , 7 ′) each are connected in an articulated manner to a setting rod ( 9 ) axially displaceably supported in the leveler bar ( 2 ) and connected at its rearward end with a setting device ( 10 ).

3. The device according to claim 2 , characterized in that the outer surface ( 12 ) of the spread rake blade ( 5 ) is substantially aligned in parallel with the oven wall disposed opposite the leveling opening ( 3 ).