Apparatus for Combining and Emplacing Cementitious Substances

Author:  William E. Anderson
Source:  US Patent 2,543,517
Doc ID:  1947007
Year of Publication:  1947
Abstract:  
This invention relates to the art of affixing cementitious substances to surfaces and the primary object is to provide a specifically formed nozzle forming a part of the apparatus for producing and emplacing the cementitious substance. The most important object of this invention is to provide a nozzle for apparatus of the aforementioned character, which nozzle is formed to present an intake port for air and water, the air serving not only to draw sand and cement into the nozzle but to atomize the water prior to entrance thereof into the nozzle for impinging upon and rendering such materials plastic and of proper consistency. Another important object of this invention is the provision of a nozzle for said apparatus having a continuous bore therethrough, provided with a single inlet port circumscribing the bore for receiving both air for drawing the material into the nozzle and the atomized water, said water being introduced to the air at a point remote from the nozzle to the end that the mass of material is hydrated only with a pressurized spray of moisture and improper admixing is thereby avoided.