. Canadian transportation & distribution management. r, similar to a tele-graph instrument, consisting of a doubleelectromagnet, in front of which is a hingedflapper, the lower end of which is alsohinged to a rod running across the table,to which two pens are attached, in adjust-able positions, for marking two datum lineson the moving paper. In the front of this rod is another crossrod connecting a gauge in the foregroundwith the black box in the left latter is a speed recorder, connectedthrough a long spring belt with a pulleyon the truck axle. A flexible cord in thespeedometer
. Canadian transportation & distribution management. r, similar to a tele-graph instrument, consisting of a doubleelectromagnet, in front of which is a hingedflapper, the lower end of which is alsohinged to a rod running across the table,to which two pens are attached, in adjust-able positions, for marking two datum lineson the moving paper. In the front of this rod is another crossrod connecting a gauge in the foregroundwith the black box in the left latter is a speed recorder, connectedthrough a long spring belt with a pulleyon the truck axle. A flexible cord in thespeedometer connects with this front crossrod, the near end of the cross rod connect-ing with the gauge in the foreground, thisgauge indicating the speeds on the dialface. The speeds are also recorded graphic-ally by a stylograph pen attached to thecross rod. The pens on the rear cross rod are soadjusted as to give datums for the pull onthe far side of the paper, and for the speedon the near side of the paper. The elec-trical attachment on the far end of this. Fig. 4.—Oil Draft Cylinder of Dynamometer Car. June, 1913.] CANADIAN RAILWAY AND MARINE WORLD. 251 rod is connected with a push button oneach side of the cab, so that the observerat the car side, on approaching a mile post,presses the button, the hinge of the elec-trical apparatus flapping, drawing thedatum pencils towards it momentarily, aspring forcing them back to normal positionon the release of the button, the jog inthe datum thus made forming the milepost indication. Both speed and pull are recorded on thepaper to a known scale, but in operation,as a double check, it is the practice tomark the pressure and speed indicated onthe indicating gauges on the paper at thesame time that the number of the milepost is marked opposite the datum points are also pencilled downon the paper, where the table observer notesany points in the traced curves that hewishes to record. Memoranda can also bewritten down in the margi
Size: 2601px × 960px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherdonmi, bookyear1913
