. Electric railway journal . hoisted by a motor driven winch and a disconnecting clutch is used to drop it. The drop weighs1400 lb. and carries a sharpened wedge 18 in. long on itsunder side. About four blows are required to penetrate abed of solid concrete 18 in. thick. This machine will dothe work of 75 men with sledges and chisels. Handling rails and pieces of special work on the groundrequires a large force of men. A crane car such as theone illustrated is very useful for this work. This car ismounted on a single truck and carries an operators cab onthe top of which is mounted the trolley
. Electric railway journal . hoisted by a motor driven winch and a disconnecting clutch is used to drop it. The drop weighs1400 lb. and carries a sharpened wedge 18 in. long on itsunder side. About four blows are required to penetrate abed of solid concrete 18 in. thick. This machine will dothe work of 75 men with sledges and chisels. Handling rails and pieces of special work on the groundrequires a large force of men. A crane car such as theone illustrated is very useful for this work. This car ismounted on a single truck and carries an operators cab onthe top of which is mounted the trolley pole. The hoistingdrum is motor driven and the boom of the crane can berevolved through an arc of about 200 deg. The radius ofthe boom can be varied by lengthening or shortening thechain from the point of the boom to the top of the crane car is used in unloading rail, moving the railsinto position and doing any moderately heavy lifting re-quired in the construction of track or in loading cars in thematerial Detroit United Railway—Saw for Cutting Grooved Rail Some of the older track of the Detroit United Railwaywas laid with girder rail having a very narrow flanges of wheels under interurban cars operating overthis track completely filled the grooves, and if the wheelswere not accurately pressed to exact gage on the axlessevere strains were set up, which resulted in many brokenaxles. After trying unsuccessfully to chip off the lip ofthis grooved rail, the car shown in one of the engravingswas devised. It consists of an old Brill single-truck onwhich are mounted the driving motor and the cold saw is mounted on an arbor approximately overthe gage line of one rail. It is driven through a chain ofgears by a shaft and universal joint which allows forvariations in the depth of the cut. The driving shaft is inturn driven through double reduction sprocket wheels andchains by a railway type motor mounted low down on theframe of the car. This motor i
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
