Coking plant comprising two oven chamber rows arranged in parallel

A coking plant comprising:

• a first longitudinally extending row of oven chambers all of generally the same width and generally the same longitudinal spacing;
• a second longitudinally extending row of oven chambers parallel to the first oven-chamber row, the number, width, and spacings thereof corresponding generally to those of the first oven-chamber row, the rows defining a longitudinally extending corridor between each other, the oven chambers having coal input ports opening transversely inward into the corridor, the first and second rows being longitudinally offset from each other by a predetermined distance that is greater than the oven-chamber width;
• a device for servicing the oven chambers and movable longitudinally in the corridor between the two rows of oven chambers, the device having
• first and second service machines transversely facing the respective first and second rows and operable to service the chambers thereof, and
• a coupling of variable longitudinal length between the first and second machines operable for varying the longitudinal spacing between the two machines.