Interlocking system for building walls

Claim 1

A wall comprising superposed rows of longitudinally aligned building blocks, said blocks having approximately parallel front and back faces connected by a plurality of transverse webs defining chambers between said webs, the top and bottom of said front and back faces being approximately parallel and providing longitudinally extending tops and bottoms for said blocks, said tops and bottoms being formed to include uniformly spaced apart ball-receiving depressions positioned so that the depressions in the tops of each block mate with the depressions in the bottoms of the block above it, balls fitted into the space defined by mating depressions, said balls being slightly larger than said mating depressions to space the blocks, the depressions in the tops of each block being machined to a specific depth in relation to the height of the block so that the interconnection of said blocks by said balls provides horizontal alignment for each ball-supported block, the upper face of said webs being formed with longitudinally aligned V-shaped grooves which are accurately positiond at a uniform distance from the front faces of said blocks, and elongated straight bars of circular cross-section fitted in said grooves and extending longitudinally and horizontally from one block to the next to provide longitudinal alignment of the blocks in each row.