. Railway mechanical engineer . - by a rubber blockplaced between them. The shank, which fits the air ham-mer, is made separate from the body. In operating the toolit is held in line with the tube and revolves while the airhammer is operating. It is claimed that tubes can be Ijeadedin from 15 to 20 seconds with this device. The tool cannotbe held at such an angle that the blades will injure the tube. A Self-Allning Beading Tool sheets, as is often done with the common type of beadingtool. By providing bodies of different sizes the same bladescan be used for both the small tubes or for the larg
. Railway mechanical engineer . - by a rubber blockplaced between them. The shank, which fits the air ham-mer, is made separate from the body. In operating the toolit is held in line with the tube and revolves while the airhammer is operating. It is claimed that tubes can be Ijeadedin from 15 to 20 seconds with this device. The tool cannotbe held at such an angle that the blades will injure the tube. A Self-Allning Beading Tool sheets, as is often done with the common type of beadingtool. By providing bodies of different sizes the same bladescan be used for both the small tubes or for the larger super-heater flues. Another tool designed by Mr. Kerr is a new type of sec-tional expander. The straight is shown at the right in the illustration and the Prosser expander at the will be noted that both styles have projections at the outeredges of the sections. These bear against the flue sheetwhen the expander is in use so that the shoulder of theexpander will not be forced against the projecting end of thetube when the pin is driven in. This prevents the weaken-ing of the flue at this point and forcing the bead away fromthe sheet when the expander is used repeatedly. Both ofthese devices are handled by the Collis Company, Clinton,Iowa. PORTABLE VISE STAND AND PIPEBENDER A vise stand and pijjo bender which is portable and canbe used without being fastened in place has be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
