. Locomotive engineering : a practical journal of railway motive power and rolling stock . feeling very pleasant overorders from the Paris & Orleans and theFrench State Railways for packing. Theyalso expect to have their packing on prac-tically every in the American ex-hibit at the Paris Exposition. 232 LOCOMOTIVE ENGINEERING June, 1900. A Cast Iron Milling Tool. Milling tools are usually made of thebest of steel, very carefully machined, andcare taken in hardening them, so they canbe trued up with little loss of metal on thecutting edges. This makes them expen-sive, especially the lar
. Locomotive engineering : a practical journal of railway motive power and rolling stock . feeling very pleasant overorders from the Paris & Orleans and theFrench State Railways for packing. Theyalso expect to have their packing on prac-tically every in the American ex-hibit at the Paris Exposition. 232 LOCOMOTIVE ENGINEERING June, 1900. A Cast Iron Milling Tool. Milling tools are usually made of thebest of steel, very carefully machined, andcare taken in hardening them, so they canbe trued up with little loss of metal on thecutting edges. This makes them expen-sive, especially the large ones. Master Mechanic M. L. Flynn, of theMichigan Central Railroad at St. Thomas,Ontario, has been using cast-iron millers on the American side. The tariff cutsquite a figure in the relative expense ofengines built in the companys shop orimported. The best use for a 6-inch air pump is,trading it in to the brake company for anew one of improved design. Occasion-ally we see one that is taken out of air-brake service and put at other work. has one mounted on a truck, so it. SLEEPER AND DINING CAR. for some time past and finds them muchcheaper than steel ones, and just as re-liable. These milling wheels are cast of ordin-ary car-whtel iron, in an iron chill, whichis cut out to give the teeth the right shapeand pitch. The center is first bored outthe proper size to fit on the mandrel orarbor, the cutting edges then ground onan emery wheel, and they are ready foruse. These tools cost about 3 to 4 centsa pound when completed. Some of these cast-iron millers are assmall as 4 inches in diameter. One, usedfor milling out the inside of wedges andshoes, where they fit against the jaw ofthe frame, is 8 inches in diameter. It hascutters on each end as well as on the finishes that part of the wedge onthree surfaces in one trip. Thirty-two ofthese wedges can be milled out with onetool before it needs grinding. These toolswill cut cast-steel boxes also in goodshape, and mak
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
