In an example embodiment, an instructor seat for the cab of an agricultural vehicle is convertible between a sitting condition when the seat is in a forward position and a non-sitting condition when the seat is in a rearward position. The instructor seat may include a seat base and seat back, a conveyor to move the seat between a forward position and a rearward position, and a latch mechanism to place the seat back in a generally vertical position when the seat is in a forward position and force the seat back into a generally horizontal non-sitting position when the seat is in a rearward position.

A chair configured to movably couple to parallel guide rails of a frame includes a support bar having a first end and an opposing second end. A transverse cross-member is coupled to the first end of the support bar. The transverse cross-member has a first side portion and an opposing second side portion. A first support assembly is coupled to the first side portion of the transverse cross-member. The first support assembly is configured to removably couple to a first guide rail of the parallel guide rails. A second support assembly is coupled to the second side portion of the transverse cross-member. The second support assembly is configured to removably couple to a second guide rail of the parallel guide rails.

The invention relates to a seat comprising: a squab, and a backrest provided with a headrest movable with respect to the backrest, said backrest being movable rotationally with respect to the squab and translationally with respect to at least one upright of a seat structure when the seat moves between a sitting position and a stretched-out position, a retraction device for the headrest comprising a return member arranged between the backrest and the upright and also a cable mechanically connected to the headrest, said retraction device being configured to allow a dead travel of the return member between the sitting position and a predefined intermediate position of the seat and then in order that the return member generates, on account of the relative translational movement of the backrest with respect to the upright, a pull on the cable causing the retraction of the headrest inside a receiving space provided in the backrest after consumption of the dead travel, between the intermediate position and the stretched-out position of the seat.