主权项 |
1. A set of building blocks useful for constructing walls comprised of:
a first block, which is square when seen from the top or bottom; with a square hole molded through from top to bottom; the edges of said hole being equidistant from the edges of said block's top and bottom edges and further said hole may be tapered from top to bottom and have radii at the vertical corners; and a second block, which is the same as two said first blocks joined side to side; and a third part which is a part with a top half that fits closely within the perimeter of the bottom cored area of the top block and a bottom half that fits closely within the cored perimeter on the top of the bottom block so that when one block is stacked on another with a third part between the three parts are held in alignment with respect to one another with gravity serving as the force holding the blocks together vertically. |