. Railway mechanical engineer . ng which completely encloses thespace httween the screen and the sasli. The remainder of thespace between the sheathing and the interior finish of the caris thus closed from communication with the outside air andserves as insulation. The bottom of the window casing slopesoutward and toward the middle and drains through a smallhole in the outside sheet. This construction is claimed to make possible a considerablesaving in weight as compared with the usual type of clere-storyroof. located at a fixetl lKii;lu where desired. Eor work which cannotbe supported in jaws
. Railway mechanical engineer . ng which completely encloses thespace httween the screen and the sasli. The remainder of thespace between the sheathing and the interior finish of the caris thus closed from communication with the outside air andserves as insulation. The bottom of the window casing slopesoutward and toward the middle and drains through a smallhole in the outside sheet. This construction is claimed to make possible a considerablesaving in weight as compared with the usual type of clere-storyroof. located at a fixetl lKii;lu where desired. Eor work which cannotbe supported in jaws an adjustable table is supplied. COTTER AND KEYSEAT DRILL The machine shown herewith is especially adapted to thedrilling of spline and keyseats in shafts, piston rods and locomo-tive crossheads. It may also be used for drilling and mortisingthe holes in side rod stubs at one setting. It is manufactured bythe Niles-Bement-Pond Co., New York, and is furnished in twosizes with either one or two heads. The illustration .shows the. Machine for Drilling Spline and Key Seats larger size machine with two heads, with a large crosshead setup for drilling the key slot. The chuck jaws in this machine will take work up to 10 in. indiameter and it has a spline cutting capacity up to 36 in. long,2^ in. wide and 16 in. deep. For large work the machine may beequipped with sliding centers which will take pieces up to 19 inin diameter and 42 in. long. Each spindle is driven by a separate motor, which is mountedon the head. The heads may be moved on the carriage by eitherhand or power cross-feeds and a reciprocating longitudinal trav-erse of the carriage is provided on the bed of the is reversed automatically by means of trips, the locationof which is adjustable on the reversing rod, shown in frontof the bed of the machine. Variable power feeds are providedon the spindles and an automatic stop throws out the feed atany desired depth of cut. The traverse of the carriage on thebed of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
