. Remunerative railways for new countries : with some account of the first railway in China . ntly, when the sleeper is at rest, it acts upona lever, which raises the augers, and thus simultaneously bores the four holes. The cam havingpassed the lever, the augers fall clear of the sleeper, the clutches at once come into contact with thetumbler, and the sleepers are again moved forward. The machine with its counter shaft may be fixed upon a strong frame of timber bedded into theground, and can be driven direct from any portable engine of not less than 6-horse power, or it may bedriven by the sa
. Remunerative railways for new countries : with some account of the first railway in China . ntly, when the sleeper is at rest, it acts upona lever, which raises the augers, and thus simultaneously bores the four holes. The cam havingpassed the lever, the augers fall clear of the sleeper, the clutches at once come into contact with thetumbler, and the sleepers are again moved forward. The machine with its counter shaft may be fixed upon a strong frame of timber bedded into theground, and can be driven direct from any portable engine of not less than 6-horse power, or it may bedriven by the same engine which drives the saw bench, in which case an engine of 10-horse powerwould be required to drive the two machines. Cost of sleeper adzing and boring machine for sleepers up to 7 feet long £iSo Cost of 10-horse power portable engine .. .. .. .. 305 „ spare parts for engine and machine .. .. .. 45 The machine shown in the woodcut is for adzing and boring rectangular sleepers. A machine fortreating half-round sleepers is made at about the same cost. FOR NEW COUNTRIES. 83 Fig. J^lMBAuLT MACHINES FOR FELLING TREES BY STEAM POWER. 84 REMUNERA TIVE RAIL WA YS A proposal to use sleepers cut on the spot is of course suggested by the economy expected to secure this economy it is very necessary to have the best class of plant for the purpose, and careshould be taken to have adequate driving power. A six or eight-horse power engine will drive a sawbench very well if good fuel is to be had, but if it is intended to use the waste wood as fuel, an engineand boiler of double the size should be provided. The economy of working with refuse fuel will ofcourse cover the additional cost of the engine many times over ; but if it be attempted to secure theadvantage without the necessary outlay, of course delay and disappointment must be the result. Wellfurnished plant, with ample steam power, is sure to give the best result. Where the sleepers are to be cut from trees of or
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