Nonskidding blocks for use in making body repairs and carrying out similar operations in the body, reconditioning, and trim industries are disclosed.

An outwardly bent engaging projection and an engaging depression are formed at each end of a substantially flat-shaped concrete block. The engaging depression receives an engaging projection of another concrete block, while the engaging projection of the first concrete block is received by an engaging depression of still another concrete block. Thus engaged with one another so as to be horizontally inseparable, a plurality of such concrete blocks form a honeycomblike framework which, supplemente...

A paving block to produce an accurate, smooth upper surface and accurate spacing between joints in which the body of a block is provided with flanges flush with the top surface on two adjacent edges of the square block, and flanges flush with the bottom surface on the remaining two edges of the block, with studs projecting from the body of the block outwardly in the direction of the second flanges but being substantially shorter than the width of the flanges and lying in the rabbet for engagemen...

The stand-to-stand transmission ratios between the working sizing passes at the entry end of a rolling block for rolling bars, rods or wire are fixed but are different from one another. This enables an entire range of finished workpiece cross sections to be obtained from a given first pass workpiece entry cross-sectional area, merely by omitting one or more of the working stands and shifting other working stands from one location to another and by changing only the stands of the finishing sizing...

A shaped hollow building block suitable for lining bank slopes at the ground water level has a face wall in the form of a shield standing perpendicularly to a base wall, includes on both sides a margin projecting relative to side walls and has a height greater than that of the side walls. The side walls and the base wall jointly form an elongate trough in a direction normal to the face wall. The shaped block includes two compartments separated by a transverse wall extending parallel to the face ...

A building block having a six-sided body formed of rigid, foamed, resinous, fire retardant material is bonded on two opposite sides to concrete slabs. Parallel, spaced apart grooves are provided between the body and the slabs and extend along one side of the body and parallel, spaced apart projections are provided between the body and the slabs and extend along another side of the body. The grooves and the projections of each block are so located relatively to the grooves and projections of anot...

An aerial block for stringing cable from an existing supporting strand includes a casting forming a main frame having a pair of strand engaging hooks at its upper end and a downwardly depending central portion. The downwardly depending central portion has a series of vertically spaced openings formed through it which slidably receive a series of substantially identical, horizontally extending rods. Alternate rods beginning with the lowermost rod have a series of grooved sheaves rotatably mounted...

A wall structure and a block for forming same in which the block is generally rectangular and divided along its length into four substantially equal parts with a vertical hole centrally positioned through each of the four parts. Each of the four parts also has an alignment groove such that when two overlying blocks in adjacent courses of blocks overlie by any number of one-fourths of the length of a block, at least some of the alignment grooves and vertical holes will be vertically aligned. Expa...

A block of bags for a product filling process includes a plurality of bags stacked in overlying relationship. Each bag of the block has a top edge, a bag mouth and opposite first and second side edges. First and second weakened segments extend from adjacent edge points on respective opposite lateral edges of the bag. A central line of perforations extends between inner ends of the first and second weakened segments. A tear-off region is defined between the central line of perforations and the to...

A tooth-block for fabrication of dentures, including a horizontally deformable bar of rectangular cross-section provided along its upper margin with outwardly projecting retentions, each retention having an individual artificial tooth securely mounted thereon in spaced separation from the bar, each retention and its respective tooth being selectively positional with respect to the bar and to each other tooth.