A rotary dobby (1; 201) for a loom, the rotary dobby (1; 201) comprising: - a frame comprising a bottom, as well as a first and a second platen (9; 10) respectively defining a first support plane and a second support plane passing through the bottom, while being parallel to and distant from one another; - a lubrication system (110, 112, 114, 147) comprising a lubrication circuit and a pump for circulating lubricant in the lubrication circuit; - a common shaft, supported by the frame and extending between the first support plane and the second support plane; - output levers, mounted rotating around the common shaft between the first and the second support planes, and driven in alternating oscillation movements during weaving; - a drive shaft for driving the output levers, supported by the frame and extending between the first support plane and the second support plane; - mechanical drive devices mounted around the output shaft, each drive device being configured to switch between: ∘ a coupled configuration, in which the drive device subjects the rotational mobility of one of the output levers to the rotation of the driveshaft, and ∘ an uncoupled configuration, in which the drive device frees the rotational mobility of said output levers from the rotation of the driveshaft; - a reading system, configured to selectively switch the drive devices between the coupled configuration and the uncoupled configuration, the driveshaft, the common shaft, the drive devices and the reading system being offset in a height direction relative to the bottom; characterized in that the lubrication system (110, 112, 114, 147) comprises a lubricant distributor (120; 320), which is separate from the common shaft, and which comprises several lubricant emission mouths (130-136; 330-334), which are supplied with lubricant by the lubrication circuit and which are offset in the height direction relative to the reading system, and in that the distributor (120; 320) comprises at least two tubular segments (141, 142; 340, 340B) each bearing at least one of the emission mouths (131, 132; 330, 333), the two tubular segments being fluidly connected to one another at a passage section, the passing of lubricant from one segment to the other being limited by a partial obstructer (148, 150; 351, 352) of the passage section, for example a partial partition. - a frame comprising a bottom, as well as a first and a second platen (9; 10) respectively defining a first support plane and a second support plane passing through the bottom, while being parallel to and distant from one another; - a lubrication system (110, 112, 114, 147) comprising a lubrication circuit and a pump for circulating lubricant in the lubrication circuit; - a common shaft, supported by the frame and extending between the first support plane and the second support plane; - output levers, mounted rotating around the common shaft between the first and the second support planes, and driven in alternating oscillation movements during weaving; - a drive shaft for driving the output levers, supported by the frame and extending between the first support plane and the second support plane; - mechanical drive devices mounted around the output shaft, each drive device being configured to switch between: ∘ a coupled configuration, in which the drive device subjects the rotational mobility of one of the output levers to the rotation of the driveshaft, and ∘ an uncoupled configuration, in which the drive device frees the rotational mobility of said output levers from the rotation of the driveshaft; ∘ a coupled configuration, in which the drive device subjects the rotational mobility of one of the output levers to the rotation of the driveshaft, and ∘ an uncoupled configuration, in which the drive device frees the rotational mobility of said output levers from the rotation of the driveshaft; - a reading system, configured to selectively switch the drive devices between the coupled configuration and the uncoupled configuration, the driveshaft, the common shaft, the drive devices and the reading system being offset in a height direction relative to the bottom;