. Railway master mechanic [microform] . ary, 1909 RAILWAY MASTER MECHANIC 11 up the track which fact is due to the absence of loosebolts, nuts, and parts of frame. JOURNAL BOXES. Regarding the journal boxes, which are cast integralwith the frame, they are made of any standard strength of the connection between arch bars andjournal boxes is ample, and in the test of the frame theconnection receives a load equal to the weight of thecar. There is a lug on the bottom of journal box whichmay be used for jacking up when the truck is under acar. In view of the fact that the journal boxes a
. Railway master mechanic [microform] . ary, 1909 RAILWAY MASTER MECHANIC 11 up the track which fact is due to the absence of loosebolts, nuts, and parts of frame. JOURNAL BOXES. Regarding the journal boxes, which are cast integralwith the frame, they are made of any standard strength of the connection between arch bars andjournal boxes is ample, and in the test of the frame theconnection receives a load equal to the weight of thecar. There is a lug on the bottom of journal box whichmay be used for jacking up when the truck is under acar. In view of the fact that the journal boxes are castintegral with the frame, thus securing the advantagesabove mentioned, there is a guarantee to replace the en-tire frame if the journal boxes should fail in normal ser-vice or derailment. In most cases where journal damaged in wreck or derailment, they can be re-straightened in the railroad shops. BOLSTER OPENINGS. The bolster openings are of the shape illustrated forthe rigid bolster. The designs for Barber roller con-. FIG. 3—SQUARING AND TESTING TRUCK FRAME TO CAPA-. CITY OF CAR. struction and swing motion bolster provide straight col-umn guides. There is a hole cast in the bottom arch bar,in which a projection on the spring plank is secured. Inthis way rigidity is overcome to the extent that thetruck is adjustable to track irregularities, and at thesame time flange wear on wheels and end wear onbrasses are reduced to a minimum. TESTING AND SQUARING TRUCK FRAMES. The machine for squaring and testing side frames,shown in the accompanying illustrations, is a press of■975-ton capacity. The first operation is straighteningthe spring seat and in Fig. 1 the press is shown with thedies on the platen pressing down upon the spring the spring seat is straightened the frame is sus-pended on the spring seat as in Fig. 2, ready to havethe false journals slid in position in the journal 3 shows the press in the act of squaring and testingthe truck
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
