Abstract: A masonry block which includes two supporting parts and an insulative malleable member for interlockingly and tightly inserting between the supporting parts. The malleable member has a plurality of spaced grooves in at least one portion of each of its supporting part-engaging surfaces which is susceptible to binding. Its supporting part-engaging surfaces comprise otherwise thereover spaced convex surface portions for engaging the supporting part surfaces respectively to accommodate gradual enlargement of the supporting parts due to mold wear. For ease of picking up the block, the malleable member has in its upper surface a pair of spaced transverse hand holds, a centrally positioned longitudinal hand hold, and a pair of thumb holds positioned longitudinally outwardly of said transverse hand holds respectively.

Abstract: A masonry unit having a pair of spaced supporting parts and an insulating malleable member snugly received therebetween and lockingly engaged thereto. Grooves in the insulating member surfaces receive malleable adjacent land portions for accommodating supporting parts which are enlarged due to mold wear over a long-term period of production.

Abstract: A building block having stackable half-bond symmetry and a composite insulated wall structure built therewith. The block has a planar sidewall which defines a surface of the wall structure and a serpentine-shaped opposite sidewall defined by projections. The portion of the serpentine pattern in one block half, defined by a plane parallel to the end walls and midway therebetween, is a repeat of the portion of the serpentine pattern in the other of the block halves. Inner and outer walls are each formed by stacking the blocks in a staggered half-bond relation with a generally uniform spacing between the blocks in the walls, and insulation is inserted to substantially fill the space. The length of the blocks is at least about 24 inches. The blocks of the inner wall may also be stacked in staggered half-bond relation with the blocks of the outer wall. Both vertical and horizontal rebar reinforcements may be provided.

Abstract: An insulated building block having stackable half-bond symmetry. The block has a pair of block parts the inner surfaces of which are serpentine-shaped defined by overlapping projections alternately from the block parts. Insulation is sandwiched between the block parts. The projections have enlarged end portions for interlocking the insulation to the block parts. The portion of the serpentine pattern in one of the block halves, defined by a plane parallel to the end walls and midway therebetween, is a repeat of the portion of the serpentine pattern in the other of the block halves such that the blocks are stackable in a staggered half bond relation with alignment of the insulation in the stacked block halves. At least two pins on different axes each extending longitudinally of the block into at least one projection of each block part.

Abstract: In a building block having two spaced supportive parts separated from one another by a quantity of insulating material positioned between the parts, the block supportive parts and insulating material engage one another over relatively large areas so that the engagement therebetween contributes effectively to the structural integrity of the block as a unit. The block insulating material is exposed at such locations around the block that when the block is installed in a block wall construction, the exposed locations are hidden from view by adjacent blocks.