. The street railway review . ean in city streets where ils tracks ire laid with groovedrail, the Washington (D, C), VIexandria & Mi Vernon Ky. usesa digger devised by Mr. .1. Colvin, the superintendent. The form of the device .is used with maximum traction trucksis illustrated in the sketch on ibis page. Modifications of iliis formare necessary with different types of trucks to suit the amount ofspace available. The essential parts of ilie contrivance are the two digger pieceswhich are carried, one on either side, just above each rail andimmediately in front of the forward wheels. The diggers
. The street railway review . ean in city streets where ils tracks ire laid with groovedrail, the Washington (D, C), VIexandria & Mi Vernon Ky. usesa digger devised by Mr. .1. Colvin, the superintendent. The form of the device .is used with maximum traction trucksis illustrated in the sketch on ibis page. Modifications of iliis formare necessary with different types of trucks to suit the amount ofspace available. The essential parts of ilie contrivance are the two digger pieceswhich are carried, one on either side, just above each rail andimmediately in front of the forward wheels. The diggers are ironbars ixiT_. in. and J ft. long, having at their lower ends a pieceof sieel welded to the bar ami made plow shape. When the deviceis in use these Steel ends travel in the rail groove and throw alldirt from the groove toward the center of the track. The digger pieces are carried on a frame comprising two piecesof iron pipe through which is passed an iron bar i-\s in. in /-£?£/? ////VG£0 7-0DOO/f POST 2-0. IOK CLEANING GROOVED KAILS. diameter. The liar extends the full width of the Irllek and isrigidly fastened at both ends in properly shaped castings whichare bolted to the truck frame. The shape of the eastings will depend upon the style of truck. The digger pieces are attached to tl 1 pipes b) 1 bolls as shown in the detail sketch, a sel crew serving to permit proper adjustment. At their outer ends the two pieces of pipe hear against the mentioned and al theii inner ends come in contact with helical springs which in turn bear against two collars held 111 place on the iron bar by sel screws. This spring bearing gives llexi- bility and is essential to prevent the digger pieces hom being broken 1 in. 11 iIh 11 in the track 01 1 causes. To th<- inn. 1 . ml hi iln iwo pjeci 1 of pipe are rigidlj fastened two arms which are joined by a cross piece and to which is al tached a chain thai passes up through the ear platform and en in iron lever
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
