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He had kept her in comfort through all his tribulations, and settled upon her an allowance of nine shillings a week. He had fitted up a workshop at Rotherham in Yorkshire, and here he riveted together his device for crossing streams. His backers failed and he was mulcted ,620, charged to his bridge, which he managed somehow to pay.
I am sure it will gain, both in beauty and strength.
It is true that the divergence of those radii recurs as a difficulty, in getting the rails on upon the bolts; but I thought this fully removed by the answer you first gave me, when I suggested that difficulty, to wit, that you should place the rails first, and drive the bolts through them, and not, as I had imagined, place the bolts first, and put the rails on them.
This, alone, ought to excuse him from having earned the name of infidel.
Following Cromwell’s era in England, the period of 1776 on our side of the sea was the first to give common men a chance.
Stone and wood had been the sole material used in arching streams.
Paine bethought himself of the use of iron and worked out a plan for bridging the Harlem River, which General Lewis Morris, fonnder of Morrisania on the farther shore, was to have financed. Paine then proposed to place it across the Schuylkill, hut funds were not to be had.He has brought the model of an iron bridge, with which he supposes a single arch of four hundred feet may be made.” He gave the bridge much thought, writing more than once to the inventor. that the execution of the arch of experiment exceeds your expectations.“I will begin with the subject of your bridge, in which I feel myself interested;” he observed a letter to Paine, “and it is with great pleasure that I learn . In your former letter, you mention that instead of arranging your tubes and bolts as ordi-nates to the cord of the arch, you had reverted to your first idea, of arranging them in the direction of the radii.I have lately received from Italy, a treatise on the equilibrium of arches, by the Abbe Mascheroni. If any one point is pushed with accumulated pressure, it will introduce a danger, foreign to the essential part of the plan.The difficulty you suggest, is, that the rails being all in catenaries, the tubes must be of different lengths, as these approach nearer or recede farther from each other, and therefore, you recur to portions of concentric circles, which are equi-distant in all their parts.A little cash and his fame gave him short life as a lion.His genius for invention asserted itself first in devising a candle that would not smoke, a blessing for the period, and next evolved the bridge.Unrest, always his bane, now moved him to depart from the country for Europe, leaving behind his repute and estate.What was proposed to be a temporary stay lasted fifteen years.It is the arch formed by a string fixed at both ends, and swaying loose in all the intermediate points.Thus at liberty, they must finally take that position, wherein every one will be equally pressed; for if any one were more pressed than the neighboring point, it would give way, from the flexibility of the matter of the string.” Jefferson informed Dr. Paine, the author of Common Sense, has invented an iron bridge, which promises to be cheaper by a great deal than stone, and to admit of a much greater arch.