| 摘要 |
<p>514,112. Walls. PALMER. W. April 27, 1938. No. 12553. [Class 20 (iv)] A wall comprises an assembly of interengaged wooden weather boards 1 each of which is of substantially rectangular cross-section and is provided along its two longitudinal edges with a tongue and groove respectively; each board is also cut on its external face to form along one marginal edge a longitudinal recess 2 and also to form a plurality of longitudinally-spaced vertical grooves 3 which are staggered relatively to the vertical grooves of adjoining boards. The assembly presents the appearance of brickwork or stonework and the grooves 3 serve as water conductors for conducting accumulated rainwater away from the junctions of the boards.</p> |
