| 摘要 |
The present invention is directed to a tilt lock jambliner and slidable block used with windows that both slide vertically and tilt inwardly. The window sash slides within the jambliner channel of a window frame. A pivot bar is fixedly attached to the window and is receivable within an opening in the slidable block. The slidable block is slidably mounted within the jambliner channel. The slidable block has a plurality of projections on one side which alternatingly engage a projecting fin of the jambliner channel. The projections cause the projecting fin to assume a wave shape. The interaction between the projecting fin and the lowermost projections creates constant running friction. Running friction is adjustable using a threaded friction adjusting screw mounted in the slidable block. The uppermost projections form a V and have sharp locking corners. When the sash is rotated, the biasing mechanism rotates the slidable block and forces the projections to engage the projecting fin and lock the slidable block and the sash in position.
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