The Bleichert system of wire rope tramways; with special reference to the patent locked-coil track cable and the Webber patent automatic grip, no lugs required on the steepest grades, reversible wire rope tramways, with self-dumping buckets - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...advantage of having the engine outside where it is lighter, and repairs can be more readily made. If the slope into the mine is an easy one, the trips may be hauled directly out, by providing an engine of sufficient power, and if at the same time the grade is steep enough for the empty trips to descend by gravity, the tail rope connections may be made at the foot of the slope. Where the slope from the mine entrance to the tipple is in favor of the loaded trips, these may be lowered directly by means of the tail rope, the main rope being knocked off as soon as the trip comes out of the mine. In fact, a variety of conditions may occur to modify the character of the line and method of operating; the grades being a most important feature in this consideration. In laying out and estimating on any line, therefore, the importance of having an accurate profile to work to is manifest. ENDLESS ROPE SYSTEM. The endless rope system, as the name implies, is one by which a single rope is operated continuously in an endless circuit, the engine being fitted with a fly-wheel and governor, and requiring but little attention. The engine drums, two in number, are from four to eight feet in diameter, placed tandem on horizontal shafts, and usually mounted on one bedplate with the engine, as shown in Fig. '84. The rope is lapped a sufficient number of times about these drums to give the necessary factional adhesion, the drums being grooved according to the number of laps. The engine is geared to the back drum, while the forward drum, which is mounted in a position inclined sufficiently to lead the rope to the successive grooves of the driving drum, usually revolves freely in its bearings, although this drum is sometimes also geared to the engine. The cars are attached to the rop...
"synopsis" may belong to another edition of this title.
