. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . wagon-way, butdiffers from the former system in the following important items ;— 1. As a general principle, it may be stated that when the two ends of an undulating plane areat the same level, the power required to work such a plane will be very little more than if the planewere perfectly level. 2. A heavy gradient can be worked safely and efficiently. 3. Since the chain will only work safely in a straight line, or, at the most, round a slight curve,every s
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . wagon-way, butdiffers from the former system in the following important items ;— 1. As a general principle, it may be stated that when the two ends of an undulating plane areat the same level, the power required to work such a plane will be very little more than if the planewere perfectly level. 2. A heavy gradient can be worked safely and efficiently. 3. Since the chain will only work safely in a straight line, or, at the most, round a slight curve,every sharp curve upon the planes necessitates the erection of two pulleys, in order to direct thechain to another course, and requires the attention of a man or boy. The system is very extensively in operation on the surface at Burnley, and the slow speed atwhich the tubs are conveyed not requiring a very carefully-laid wagon-way, they generally lay theway upon the uncut sod, only making embankments or erecting gearing when a stream or deepdefile has to be passed over. The surface of the country is very hilly in this district, and it is. HAULAGE. 1875 therefore more economical to carry the coals from the pits to the canals and railways in tubs bythe endless chain, than by wagons on ordinary endless-chain planes reported on are as follows ;— Hapton Valley.—Underground chain road. „ „ Surface chain road. Gannow, top bed.—underground chain road. „ low bed.— Rowley.—Underground chain road. „ Surface chain road. Clifton Hall.—Surface chain road. Methods of Applying the Endless-chain System.—The engines working the endless chain at Burnleyare nearly all of one class, namely, double 12J-in, cylinder vertical overthiow engines. Motion istransmitted to the wheel driving the endless chain by means of toothed gearing; the engineusually goes at a speed of about eighty strokes a minute, and works the driving wheel on the thirdmotion. The engine-plane consists
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
