. American engineer and railroad journal . roved to be particularlywell adapted for railway shop uses at points where this refusecan be obtained. It has been found that this flame is excellentfor use in the car yards for straightening bent parts of steelcars, in the boiler shop for laying up an obstinate corner orflange and in the frame shop for either straightening frames orfor pre-heating preparatory to thermit welding. Frames can alsobe welded with this flame under proper conditions. most distinguished leaders in the industrial, legislative and edu-cational world will be present and make ad
. American engineer and railroad journal . roved to be particularlywell adapted for railway shop uses at points where this refusecan be obtained. It has been found that this flame is excellentfor use in the car yards for straightening bent parts of steelcars, in the boiler shop for laying up an obstinate corner orflange and in the frame shop for either straightening frames orfor pre-heating preparatory to thermit welding. Frames can alsobe welded with this flame under proper conditions. most distinguished leaders in the industrial, legislative and edu-cational world will be present and make addresses. An exhibi-tion of trade school work from all over the United States willbe one of the features of the convention. State branches ofthe society have increased in number during the past year; Mas-sachusetts and New York alone have more than 200 membeiseach. The society has just issued Bulletin Xo. 9, which con-tains all the addresses delivered at the last annual conventionheld in Atlanta. 458 AMERICAN ENGINEER AND RAILROAD drilling with a jig is practiced, thework is accomplished very rapidly. Aswill be noted from the test sheet aspindle speed of 900 r. p. m. is avail-able, although this may be increasedor diminished to suit special require-ments. As all the bearings are of theball bearing type, the drill will standup to a speed of 2,000 r. p. m. withoutsign of distress, although, of course,no twist drill will hold an edge atsuch a speed. The second illustration shows oneof these machines, with a 2-ft. arm,equipped with a motor drive and atapping attachment. The motor ismounted beneath the box table and isconnected to the tapping attachmentdriving shaft by a belt. The motor isa Lincoln variable speed, 3 to 1, withspeeds of from 525 to 1,575 are controlled by the handwheel on the motor. Many of thevisitors at the Atlantic City conven-tion, where one of these drills was ex-hibited, who operated the drill statedthat it drilled into the metal as though
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
