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Thus, he was obliged to start once more at the foundation, and he devised a crushing-machine which was subsequently named the "Three-High Rolls," and which virtually reversed the above figures, because it developed 84 per cent. Thus, with never-failing persistence and endurance, coupled with intense thought and laborious work, Edison met and conquered, one by one, the complex difficulties that confronted him. I replied: `Over 4 million dollars.' When Mr. Edison is pondering severely over a problem he's within the behavior of pulling his proper eyebrow, which he did now for fifteen or twenty seconds. The problem included dealing with and crushing the "run of the mine," without selection. Along within the latter a part of the nineties, when the work on the problem of concentrating iron ore was in progress, it grew to become crucial when leaving the plant at Edison to wait over at Lake Hopatcong one hour for a connecting practice. The little village, referred to as into existence by the concentrating works, was of the most primitive nature and provided nothing in the way in which of frivolity or amusement. This shot entails placing the cue ball in a manner that it contacts multiple balls consecutively earlier than pocketing the supposed goal ball. Two sets of balls are used on this recreation, one is coloured and the other is striped.

To the faces of these rolls have been bolted a series of heavy, chilled-iron plates containing quite a lot of projecting knobs two inches excessive. These latter rolls were additionally face-lined with chilled-iron plates; however, unlike the bigger ones, had been positively pushed, decreasing the rock to pieces of about one-half-inch dimension, or smaller. But, alas! "The most effective laid plans o' mice and men gang aft agley." The discovery of great deposits of wealthy Bessemer ore within the Mesaba vary of mountains in Minnesota a 12 months or two previous to the completion of his work had been adopted by the opening up of those deposits and the marketing of the ore. When the skips arrived at the large rolls, their contents had been dumped robotically into a superimposed hopper. The steam-shovel didn't discriminate, however picked up handily single items weighing 5 - 6 tons and loaded them on the skips with portions of smaller lumps. The blast would dislodge thirty to thirty- 5 thousand tons of rock, which was scooped up by great steam-shovels and loaded on to skips carried by a line of automobiles on a narrow-gauge railroad operating to and from the crushing mill. Each machine made these briquettes at the rate of sixty per minute, and dropped them into bucket conveyors by which they had been carried into drying furnaces, by way of which they made five loops, and were then delivered to cross-conveyors which carried them into the inventory-house.

The Crane trial was too short to settle the query to what extent the rise in product may be carried. Having taken a considerably superficial survey of the great enterprise underneath consideration; having had a cursory look at the technical development of the plant up to the point of its successful culmination within the making of a marketable, industrial product as exemplified within the test at the Crane Furnace, let us revert to that demonstration and be aware the events that adopted. The furnace at which the test was made produces from one hundred to 1 hundred and ten tons per day when working on the ordinary mixture. Life at Edison was of the simple variety--work, meals, and some hours' sleep--day-to-day. Hence Edison was enabled to follow his natural bent in being surrounded day and night time by his responsible chosen associates, with whom he labored uninterrupted by outsiders from early morning away into the late hours of the evening.

Once we arrived at Dover, New Jersey, we received a new York newspaper, and that i referred to as his attention to the quotation of that day on General Electric. It is not straightforward to appreciate to the full the daring exemplified in these nice crushing rolls, or fairly "rock-crackers," with out having watched them in operation delivering their "photo voltaic-plexus" blows. In operation the material passed first via the higher and middle rolls, after which between the center and lowest rolls. It will be apparent, therefore, that any material which handed in between the top and the middle rolls, and the middle and backside rolls, could be floor as advantageous as might be desired, relying completely upon the quantity of pressure applied to the unfastened rolls. On the ends of the shafts of the bottom and top rolls there were cylindrical sleeves, or bearings, having seven sheaves, wherein was run a half-inch endless wire rope.

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