. Railway mechanical engineer . surface of 26 in. by 31 in. The2 ft. 6 in. machine drills to the center of a 60-in. circle, and hasa base working surface of 28 in. by 36 in. Other principal di-mensions common to both machines are: base to spindle. 51in.; spindle traverse, 12 in.; least diameter of spindle, 1 9/16 in.;spindle liore, Morse Taoer No. 4. Tilting, swinging or round tables of the builders standard types can be supplied. Thenet weight of the machines are 2,90(J lb. and 3,20(J lb., respect-ively. As on heavy duty radials, the interchangeable drive has beenadopted. The cone driven mach
. Railway mechanical engineer . surface of 26 in. by 31 in. The2 ft. 6 in. machine drills to the center of a 60-in. circle, and hasa base working surface of 28 in. by 36 in. Other principal di-mensions common to both machines are: base to spindle. 51in.; spindle traverse, 12 in.; least diameter of spindle, 1 9/16 in.;spindle liore, Morse Taoer No. 4. Tilting, swinging or round tables of the builders standard types can be supplied. Thenet weight of the machines are 2,90(J lb. and 3,20(J lb., respect-ively. As on heavy duty radials, the interchangeable drive has beenadopted. The cone driven machine may be changed to speedbox drive, or vice versa, or a constant or variable speed motormay be added at any time after purchase without the necessityof a special base, special speed box or special shafts or gearsin the machine. SMOKEBOX BLOWER FITTING The illustration shows a locomotive blower fitting which isprovided with a llange for direct attachment to the side ofthe smokebox. It is pro\ ided with three pipe connections,. Smokebox Blower Fitting tlie inside connection leading to the blower nozzle, the rightangle connection to the blower pipe in the cab, and the otherto the roundhouse blower connection. A check valve, readilyaccessible through the cap shown in the illustration, automati-cally closes the roundhouse blower connection when the engineblower is in operation. It raises when the roundhouse bloweris in operation and allows steam to pass into the ^11 passages are made for \]i in. pipe. It is manufactured bythe Barco Brass & Joint Company, Chicago. BORING TOOL HOLDERS The boring tools illustrated herewith were recently placed onthe market by the Rigid Tool Holder Company, Baltimore,Md. The tools consist mainly of a special lathe boring bar,in ten sizes, four types of holders therefor to meet variousconditions, a special cutting oflF tool and internal and externalthread tools. The boring bar and two styles of holders are shown in theillustrations. The bar i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
