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John Russell Little
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27,241. Little, J. R. Dec. 12. Building-blocks.- Hollow concrete blocks A, forming independent conduits or reservoirs for supplying water to fire-extinguishers or the like, are undercut on the sides and ends to rest on the joists and form dovetailed recesses for concrete C, and are formed with central bosses a. The blocks are rhomboidal in plan, and are provided with outlets G. The concrete of which they are formed is composed of (a) 1 part each of cement, lime, sand, and diatomite, and 2 parts of ashes ; (b) or 1 part cement and sand and 2 parts each of ashes and clinker, shale, or crushed brick ; (c) or 1 part of cement and 3 parts of crushed granite or clinker. The proportions may be varied.
GB190327241D1903-12-121903-12-12Improvements in and relating to Fire Proof Floors, Roofs, and like Structures.
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