Abstract: A mechanism for adjusting the height of a vehicle seat (13) comprises a pair of front and rear bell cranks (16, 19) pivoted on a fore and aft seat slide (12) at each side of the seat. One end (15, 18) of each crank is pivoted to the front or rear of the seat and the other ends (23, 24) are interconnected by a link (23).Height adjustment is achieved by turning one of the cranks by a handle (31).

Abstract: This invention relates to a vehicle seat slide support system and is particularly concerned with a seat slide arrangement which enables a variety of adjustments to be made to the position of a seat and its configuration within a vehicle. A feature of the invention lies in the provision of an arrangement in which common parts may be used in the manually adjusted and motorized form of the seat support. In one aspect the present invention provides a slide assembly for a vehicle seat comprising a first slide member (26) arranged to support or form part of the seat squab structure co-operating with a further slide member (25) arranged to be mounted on the floor of the vehicle. In an adaptation the further slide member is provided at the front and/or rear ends with mounting means (28) by which it may be mounted on the vehicle floor and adjusted in height relative to the vehicle door.