Escalator capable of carrying a wheelchair

A wheelchair carrying escalator comprises a wheel stopper 10 which projects above a carrying plane 7f,8f,9f for the wheelchair, under the control of a turning link 15, the stopper 10 being at its greatest projection when the link 15 is in either its bottom or its top dead centre position, depending on whether the link is pivoted to the stopper 10 or the structure 17 of the step 9. The link 15 is turned by a motor 18, which may drive through a rack and pinion mechanism (fig 7 not shown). The carrying plane is made up of two elevating steps 8,9 and a normal step 7, with the stopper mounted on the most elevated step 9.