Disclosed is {HEAD ~ a braking system} for {TAIL ~ braking movement} of a window sash within a window frame jamb liner 
for
Disclosed is { HEAD ~ a braking system } for { TAIL ~ braking movement } of a window sash within a window frame jamb liner
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH