. The trackman's helper, a handbook for track foremen, supervisors and engineers . This can best be described byreference to the sketch, Fig. 83. In this the inside of the bar is bent from the middletoward the end of the moving point an amount equalto the throw at the end of the bar; then very long boltsare used with lock nuts. This does away with anyhinged device, and is absolutely safe. Also stopsshould be used at several places on the side of the mov-ing point farthest from the stock rail, so as to do awaywith any lost motion. GENERAL INSTRUCTIONS 361 With slip switches it is best to have t
. The trackman's helper, a handbook for track foremen, supervisors and engineers . This can best be described byreference to the sketch, Fig. 83. In this the inside of the bar is bent from the middletoward the end of the moving point an amount equalto the throw at the end of the bar; then very long boltsare used with lock nuts. This does away with anyhinged device, and is absolutely safe. Also stopsshould be used at several places on the side of the mov-ing point farthest from the stock rail, so as to do awaywith any lost motion. GENERAL INSTRUCTIONS 361 With slip switches it is best to have the joints atthe heels of all moving points come on a tie, theseacting as solid supports. All ties should be tamped where interlocking isused, so as to prevent any settling; and no connectionsshould be attached to the ties except where abso-lutely necessary, as this renders renewals and changesmuch easier, there being nothing to disconnect or re-place. The adjustment of all point rails should be givencareful attention, so as to be sure that they alwaysstand up to the stock Fig. 84. Foot Guard When connecting up switches with piping fromtowers, the person in charge should ascertain that thetrack is to proper grade and not likely to settle beforethe foundations for pipe lines are set; then these canbe placed to a proper height. In heavy snow storms trains should be cautioned topass over switches that are interlocked, with care, asit is often advantageous to disconnect certain partsto keep the plant running. For instance, detectorbars, being so long, get filled and thus are renderedhard to move; these can be disconnected. If the locks 362 THE TRACKMAN\S HELPER and switches, owing to the severity of the storm, arerendered useless from the tower, it is to the foremansadvantage to have these disconnected also, and throwthe switches by emergency stands. This is an extremecase and should only be resorted to when a tie-up isimminent; and as trains then have to move on a hand
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