In re Central Consumers Com- like devices, through which a flow of liquid is main- tapered surface D on a needle F, which projects axial- pany. This was an appeal from the decision of the tained, and its object is to provide means for bal- ly through the head A. A portion of the needle is… … ing to the same general class." BACK-PRESSURE REDUCER. BOILER-TUBE CLEANER.
Patents · Device · Apparatus · Adapted · Machine · Hot water · Scientific American · Square foot · Receiving surface · Square holes · Power house · Sheet metal · Sun spot · Practical treatise · Producer gas
Internet Archive · Public domain (published before 1931). Free to use for anything.
