Brick or building stone design for windows or door openings

摘要

The brick (28,30) is stepped at an angle, from the outside (14), so as to form a base or stop face (5) for the window or door involved. The stepped surface is adjoined inwards by an angled extension surface (52) which thus forms an inclined jamb face (54). From the inside opposite to the open side the brick or stone is designed as join toothing (20,22) or mortar pocket, or again a smooth surface altogether. The brick comes in full section or perforated stone, made of clay, limestone or bound material etc. The brick, or stone, start as a block whose square through-hole presents three ideal break faces enabling the product to be split into two (28,30), thus ideal face and original hole faces produce the stepped shape specified. The two outside ideal break faces expand inwards and the centre hole can be offset one way to form whole and part bricks, or stones, per pre-product.