Snubber for a sashless window

Claim 1

THE COMBINATION WITH A WINDOW FRAME AND A PANE SLIDABLE IN SAID FRAME BETWEEN OPEN AND CLOSED POSITIONS, OF A SNUBBER COMPRISING A CASE MOUNTED ON SAID FRAME ADJACENT THE PLANE OF SAID PANE, SAID PANE HAVING AN EDGE MOVABLE BACK AND FORTH PAST SAID SNUBBER DURING MOVEMENT OF THE PANE BETWEEN SAID POSITIONS, A PIVOT ON SAID CASE GENERALLY PARALLELING SAID PLANE AND SPACED A PREDETERMINED DISTANCE THEREFROM, AN ARM SLIGHTLY LONGER THAN SAID PREDETERMINED DISTANCE AND FULCRUMED AT ONE END ON SAID PIVOT, AND SPRING MEANS URGING SAID ARM TOWARD AN EXTENDED POSITION GENERALLY PERPENDICULAR TO SAID PLANE TO HOLD THE ARM IN SAID EXTENDED POSITION WITH THE FREE END PORTION OF THE ARM IN THE PLANE OF SAID PANE WHEN THE LATTER IS IN SAID OPEN POSITION, THE LENGTH OF SAID ARM BEING CORRELATED WITH SAID PREDETERMINED DISTANCE TO PRODUCE SWINGING OF THE ARM THROUGH A SHORT ARC OUT OF SAID EXTENDED POSITION AS SAID PANE IS CLOSED AND SAID EDGE PASSES SAID SNUBBER WHEREBY THE FORCE OF SAID SPRING IS APPLIED TO SAID PANE THROUGH SAID ARM WITH THE LATTER NEARLY PERPENDICULAR TO SAID PLANE.