. American engineer and railroad journal . nward toward the back. The smallestoutside diameter of the boiler is 61 j inches. The dome is aboutthe middle of the barrel of the boiler and has a safety valve ontop. Two other safety valves are placed over the firebox. Thelatter has a long brick arch below the tubes and extending up-ward and backward. Our American builders could, with advantage, imitate the form,size and arrangement of stepson the back end of the engine, andon the tender adjoining. Corrugated Copper Gaskets. We show herewith a corrugated copper gasket that is very suc-cessfully used
. American engineer and railroad journal . nward toward the back. The smallestoutside diameter of the boiler is 61 j inches. The dome is aboutthe middle of the barrel of the boiler and has a safety valve ontop. Two other safety valves are placed over the firebox. Thelatter has a long brick arch below the tubes and extending up-ward and backward. Our American builders could, with advantage, imitate the form,size and arrangement of stepson the back end of the engine, andon the tender adjoining. Corrugated Copper Gaskets. We show herewith a corrugated copper gasket that is very suc-cessfully used in place of rubber or other destructible materials sogenerally employed for packing. It consists of thin sheet copperstamped with concentric corrugations. Three to six corrugationsare all that are necessary, so that the space within the bolt holesusually determines the width of the gasket. In cases where theflanges are thin, and for this reason liable to bend when the boltsare tightened, it is advisable to extend the copper gasket to the. full width of flange. This will, of course, require the cutting ofbolt holes in the gasket. Connections made with these gaskets will not blow out after con-tinued use, for each corrugation makes the entire circle of theflange, and so long as the contact is kept complete by compressionthe joint cannot leak. It never blows out like rubber. It may berut in place while steam is leaking through the valve. It answerswell on pipes in which steam is alternately on and off, for it is* notimpaired By the repeated expansion and contraction. It is made not only in the circular form shown, but can be ob-tained in elliptical and rectangular shapes, in fact, in any desiredshape or size. It is for sale by the U. S. Mineral Wool Company, 2Cortlandtstreet, New York, and by the Bourne & Knowles Manu-factunngCompany, Cleveland, O. The Gas Exposition in New York. The Gas Exposition held in Madison Square Garden, New York,last month, was a revelation in at least o
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
