. American engineer and railroad journal . both shop and foremen, so that the other mechanicalofficials shall have time enough to devote to matters of this kind. P. A. C. Kino. WALSCHAERT VALVE GEAR FOR LOCOMOTIVES. BURNISHING TOOL FOR PISTON RODS. To the Editor: I enclose a sketch of a tool devised at the Carbondale shops of theDelaware & Hudson Company. It has been customary when aniiv piston rod was wanted, to turn the material to the desiredsize and then file it smooth and finish it by polishing with emeryand oil applied by means of a pair of wooden clamps. This processrequire
. American engineer and railroad journal . both shop and foremen, so that the other mechanicalofficials shall have time enough to devote to matters of this kind. P. A. C. Kino. WALSCHAERT VALVE GEAR FOR LOCOMOTIVES. BURNISHING TOOL FOR PISTON RODS. To the Editor: I enclose a sketch of a tool devised at the Carbondale shops of theDelaware & Hudson Company. It has been customary when aniiv piston rod was wanted, to turn the material to the desiredsize and then file it smooth and finish it by polishing with emeryand oil applied by means of a pair of wooden clamps. This processrequires considerable time to obtain a good result. A better scheme is to grind the rod, but such a process requiresa grinding machine which all shops do not possess. With the toolshown, however, a regular finish cut is taken over the rod, the toolis then secured in the tool post and closed around the rod, the rollsbeing tightened by means of the screw clamp. A fine feed is thenput on and with the proper lubricant the rod is rolled as smooth. BURNISHING TOOL FOR PISTON RODS. can be desired. The contrivance is not very costly, its con-struction being shown by the sketch. It need hardly be remarkedthat the rolls and the pins upon which they turn are to be madeof tool steel and hardened. An advantage of this method is thatby the rolling a hard compact skin is formed which makes a goodwearing surface. There is also a great saving of time. Euw. B. McCabe,LISditobS Note.—This is a convenient burnishing tool, but theimportance of installing grinding machinery should not be lostsight of where there is sufficient work of this kind to justify it. IIm n! i of burnishers was referred to in this jourual on page 337 of October, 1898, and on page 156 of May, 1899. Mr. L. Bart- lett, of the .Missouri Pacific, mentions the origin of the method byhimself iu 1891 on page 228 in July, 1899. On page 57, in Feb-ruary, , the Pennsylvania burnisher was illustrated.] Oil Fuel in Blacksmith Shops.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
