Abstract: A towcart conveyor system comprising a conveyor movable below the floor surface and having a pusher, and a plurality of towcarts. Each towcart comprises a body movable along the floor surface and an upright member on the forward end of the body. A towpin support member is pivoted at its upper end adjacent the upper end of the upright member. A towpin is mounted on the support member and a combined spring and shock absorber assembly is interposed between the towpin support member and a portion of the body and is operable to absorb the shock of engagement of the pusher of the conveyor with the towpin and is operable to return the towpin support member and the towpin to its original position when the pusher becomes disengaged from the towpin.