Plastic multiple track window with slideable and removeable panes, and elements thereof

A framing strip for a multiple track window of substantially plastic construction in which two glazing panes are held adjacent their side edges in separate channels of side framing strip members which attach the window to a predetermined location, and the panes are movable within and removable from the channels of the side framing strip, in which:

• the side framing strips include three rigid linearly extending extruded plastic elements which intrinsically project from a common back portion and further include intrinsic means for laterally hinging the rigid linearly extending extruded plastic elements with respect to each other, said means for hinging including a linearly extending hinge portion disposed between said rigid element and the common back portion;
• and in which:
• the three rigid linearly extending extruded plastic elements are first and second outer elements disposed in a relationship with respect to a third common central element in which:
• both outer elements are releasably interlockable with the central element by means for interlocking with the central element;
• each outer element is disposed in a parallel relationship adjacent the central element;
• and
• the three linearly extending extruded elements so disposed form two open parallel channels between the three linearly extending elements when the outer elements are interlocked with the central element;
• whereby the first channel between the releasably interlockable central element and the outer element is adapted to receive and to releasably hold and seal a first glazing pane by means for gripping the first pane at the side edge of the pane, and
• the second channel is adapted to receive the second glazing pane in a sliding relationship with respect to the side edge of the pane.

A double track dual pane openable window of substantially plastic construction, including:

• two substantially rectangular plastic glazing panes of common width, said panes being normally an upper pane and a lower pane when the window is closed and further being disposed in a front and rear relationship of one with respect to the other,
• side framing strips adjacent the panes, the framing strips having upper and lower members in correspondence with the upper and lower panes, such members having front and rear channels to receive the glazing panes at the side edges thereof, such members further comprising:
• three adjacent rigid linearly extending extruded plastic elements, said elements being two outer elements disposed in a parallel relationship with a central element to form two open channels adapted to receive the side edges of the glazing panes therein,
• one of such channels being formed between an outer element which is releaseably interlockable by means for interlocking with the central element, such channel being adapted to releaseably hold and seal a glazing pane therein at the side edge of the pane,
• the outer channel being formed between the other outer element and the central element and being further adapted to receive a glazing pane in a sliding relationship with respect to the side edge of the pane the upper and lower members of the side framing strips being disposed in a relationship so that the respective channels thereof are in a front and rear relationship corresponding to the relationship of the upper and lower glazing panes and that the channel of each member adapted to releaseably hold and seal a glazing pane of one member is linearly aligned vertically to co-operate with the channel adapted to receive the glazing pane in a sliding relationship of the other member.