Abstract: A clamping assembly for connecting a glass panel to a window regulator has a liner for gripping opposing sides of the glass panel and a holder, connectable to the window regulator, having a channel for seating the liner. At least one of the liner and the holder channel has sloping walls so that the gripping pressure of the holder and liner against the glass panel increases the deeper the liner sits in the holder channel. The liner includes an array of sloping teeth and the holder includes an array of sloping teeth, the liner teeth and holder teeth inter-engaging one another to form a ratcheting mechanism that enables the liner to travel in only one direction, deeper into holder.