[Fig. 349] is a double cross-over road, generally termed a scissors cross-over.
[Fig. 350] is a simple through cross-over road from DOWN main line to siding alongside UP main line.
[Fig. 351] is a similar arrangement of through cross-over road with the addition of a pair of slip points at S to make a connection with the UP main line, thus combining the facilities of the ordinary cross-over and through cross-over road.
[Fig. 352] shows a set of three throw-switches with all the sliding tongues placed side by side; and [Fig. 353] shows another arrangement of three throws with the sliding-rails of the second set of switches placed just behind the heel of the first set of switches. The latter method works very well where there is sufficient length for the purpose.
[Fig. 354] shows a square crossing, where one line of railway crosses another line of railway on the same level.
[Fig. 355] shows a connection with a siding by means of an ordinary carriage or waggon turn-table.
[Fig. 356] shows a set of “runaway” points which are sometimes placed in the main line at the top of an incline close to a station, the object being to intercept or throw off any portion of a train which may have become detached, and which would, if unchecked, run away back down the incline. By means of a weighted lever or spring the points are set to the normal position of open to the siding, and as they are “trailing” points for the running road they are readily closed by a passing train. One or other of the above forms of connections, or a combination of them, will meet all the requirements which usually occur in railway work.
[Fig. 357] is an enlarged sketch of an ordinary cross-over road, and [Fig. 358] of a double or scissors cross-over.
