. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . n about half-way to the shaft by a tail rope ; the tailrope is then knocked off, and the set runs to the shaft, dragging the main rope after it. The mainrope afterwards draws the empty set up. The cog-wheel for driving the small drums required forthis work is under the pinion-wheel of the engine, and can be put in and out of gear whilst theengine is working the main engine-plane, by reducing the speed of the engine for a short time. Experiments with Dynamom
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . n about half-way to the shaft by a tail rope ; the tailrope is then knocked off, and the set runs to the shaft, dragging the main rope after it. The mainrope afterwards draws the empty set up. The cog-wheel for driving the small drums required forthis work is under the pinion-wheel of the engine, and can be put in and out of gear whilst theengine is working the main engine-plane, by reducing the speed of the engine for a short time. Experiments with Dynamometer.—The dynamometer was tried only upon the main ginney road,Nos. 1 and 2 ginney roads being too low to admit of its being used with safety. It was firstbrought in on the empty-tub way, and then taken out on the full way. TJiree other experimentswere also made to find the tractive power required to work the main road, and the two branchesworking separately ; these were made in the first 248 yds. from the station, rising 1 in 17, and thereadings were noted at three different places on the bank. The dynamometer was attached to the. chain, as shown in Fig. 3923, by coupling chains on one side, and blocks on the other ; the blockswere then drawn up, and the main chain made slack. HAULAGE. 1861 Abstract of Experiments with Indicator. Description of Work. Steam Lbs. Speed ofPiston. Actual Gauge onBoiler. Indicator. Series. Strokes a min. Feet amin. Horse-power. Steam. Back. Effective. c E j Engine going full work, both winding!and ginney chains going in shaft, and iNos. 1 and 2 ginney s underground .. j No. 1 ginney going alone No. 2 ginney going alone Nos. 1 and 2 ginney s not working, andboth chains going in shaft ; windingfull tubs Nos. 1 and 2 ginneys not working, andboth chains going in shaft ; windingempty tubs ] Winding chain going alone in shaft, iwinding empty tubs; all ginneychains being out of gear J 321 33i34 32 32 i 321 1 24-1 Î 7-8 i22-6 5-623-11 6-05 22-8 6-0 1 3-
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