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Scientific American, Vol. 67, No. 2 (1892) (1892)
leaf 3
AGE PIPES, and when it is moved in the opposite direction the cylinders to the atmosphere when the engine is running The laying of drainage pipes is always a costly oper- scrapers swing freely on their pivots. without steam, so that there is no vacuum created and ation and consumes considerable no… … duced by a cable winding over a MACHINE FOR LAYING DRAIN PIPES, able in this country for various © 1892 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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