Sound insulator structure for window

Claim 1

A sound insulator structure adapted to be set in a window or door frame or the like, comprising three sheets of glass arranged in a parallel-spaced relation to each other and at least one of which or intermediate sheet of glass is of different thickness from the two other sheets of glass, and glass holding means of elastic material provided with a plurality of hollow portions on opposite sides thereof to house containers for desiccant material, frame members provided with grooves opposite the edges of said three sheets of glass and adapted to encircle and hold said edges, one of said frame members opposite said intermediate sheet of glass being adapted to hold said intermediate sheet of glass freely supported by said one of said frame members whereas the remainder of said frame members opposite said two other sheets of glass being adapted to hold said two other sheets of glass rigidly secured to said remainder by adhesive or like means, and means for absorbing incoming sounds provided on wall surfaces of said glass holding means surrounding spaces between said grooves or said three sheets of glass set therein.