. Railroad digest . e located in said plane, substantiallyas set forth. In a tube-welding machine, the com-bination of two electric current conduct-ing devices respectively with the oppo-site edge portions of the butt-joint of atube while free from contact with suchjoint, mandrel means adapted to providebearing for said tube edge portions in resistance to the pressure of said con-ducting devices, a mandrel frame, sup-ports for said frame adapted to bearupon the tube, said conducting devices,mandrel means, frame and supports be-ing relatively located so that a planesubstantially right angular t
. Railroad digest . e located in said plane, substantiallyas set forth. In a tube-welding machine, the com-bination of two electric current conduct-ing devices respectively with the oppo-site edge portions of the butt-joint of atube while free from contact with suchjoint, mandrel means adapted to providebearing for said tube edge portions in resistance to the pressure of said con-ducting devices, a mandrel frame, sup-ports for said frame adapted to bearupon the tube, said conducting devices,mandrel means, frame and supports be-ing relatively located so that a planesubstantially right angular to the lineof movement of the tube may passthrough them all. Flue-Cutter No. 682, AVITTKE, of Columbus, Ohio. The objects of the invention are toprovide an improved rotary flue-cuttingdevice by means of which a boiler-flueor similar body may be quickly and neat-ly severed, to provide improved cutterholding and operating mechanism, andto produce other improvements in de-tails of construction. Rotary motion be-. ing contributed to the hollow shaft 5,and hence to the cylinder 1 and the partscontained therein, the stem 14 is turnedinward until througli the forward move-ment thereby imparted to the blade 20and the consequent elevating of theroller 26 and lever 24 the wheel cutter28 is in proper cutting contact with theinner surface of the tube to be cut. Agradual continuous inward movement ofthe controlling-stem 14 serves to feedthe cutter into the material forming thetube, resulting in the latter being read- Boiler-Flue Cleaner No. 681, H. HOWE, of Toledo, Ohio. This invention relates to improve-ments in boiler-fiue cleaners of the type-
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
