. Railway mechanical engineer . toward the center of the furnace at whichpoint it has a diameter of 4 in. Into the ends are tapped , one of which is connected to the oil tank and the otherto the pipe line leading to the tire heating ring, or other typeof burner, as the case may be. A >^-in. blower pipe leadsfrom the air line to the bottom of the furnace. When the device is to be placed in operation a coke fire is builtin the furnace, and is kept burning throughout the period ofoperation. This raises the gas generator to a red heat, andkeeps it in that condition, the kerosene thus b
. Railway mechanical engineer . toward the center of the furnace at whichpoint it has a diameter of 4 in. Into the ends are tapped , one of which is connected to the oil tank and the otherto the pipe line leading to the tire heating ring, or other typeof burner, as the case may be. A >^-in. blower pipe leadsfrom the air line to the bottom of the furnace. When the device is to be placed in operation a coke fire is builtin the furnace, and is kept burning throughout the period ofoperation. This raises the gas generator to a red heat, andkeeps it in that condition, the kerosene thus being completelyvaporized before passing to the burner; the result is a steady,blue flame. The device may be operated by any handy manwith perfect safety, and the cost of operation is very low. STRAIGHTENING TRIPLE VALVE PISTONS BY J. A. JESSON It is the general practice to straighten in a lathe the stems oftriple valve pistons which have been bent, a practice so ex-pensive as to often be prohibitive. The drawing shows a device. Device for Straightening Triple Valve Pistons which has proven very successful in reducing the cost of thiswork, the operation of which is very simple. The body of the device A is made from bar iron 1*4 , the end being forged at right angles to the yoke andfitted with the centers B and E. The piston to be straightenedis placed between the centers and secured by the adjustablecenter B. At C is shown a hollow screw threaded through theend of the body. Working freely in this screw is a brass pin Dwith a flat head on the inner end. When the piston is in placeit is revolved and the screw C is adjusted until the end of the 44 RAILWAY MECHANICAL ENGINEER Vol. 90, No. 1 pin D is brought in contact with the nearest point on the faceof the piston. The straightening is effected by lightly strikingthe outer end of the pin, continuing to turn the piston andoperate the screw C until the head of the pin touches the surfaceof the piston all around. This device
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
