2021-04-17 01:48:21

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ENGLISH After the explanations required of us they allowed us to go on. The incessant roar of the guns made the girl tremble for fear, and the stinging smoke made her cough. After much trouble we got at last as far as Herstal, where I had promised her a short rest.Tempering may be called a mystery of the smith-shop; this operation has that attraction which characterises every process that is mysterious, especially such as are connected with, or belong to mechanical manipulation. A strange and perhaps fortunate habit of the mind is to be greatly interested in what is not well understood, and to disregard what is capable of plain demonstration.

CHAPTER XXI. MECHANICAL DRAWING.A few minutes after I left the town a scene drew my attention. A lady stood there with a little girl; the lady seemed to urge the child to do something to which it objected. She refused to take a bag full of various small parcels pressed upon her, and clutched hold of the lady's skirts. I wanted to know what was the matter, got a little nearer, and was amazed to hear them both speak Netherland. I could not help asking what the trouble was and whether I might be of service.

Forges, pneumatic machinery for blast, machinery for handling large pieces, and other details connected with forging, are easily understood from examples.The bridge-command at the pontoon-bridge near Lixhe allowed me to cross, after requesting me very pressingly to make very clear what swine these Belgians were, who fired so treacherously at unsuspecting soldiers, put out the eyes of the wounded, cut off their hands and genitals. When I asked where all these things had happened, the answer was: "Everywhere!" Of course, I promised them to do everything they wanted.With running dies, blanks may be clamped when a machine is in motion, and as the blank does not revolve, it may, when long, be supported in any temporary manner. The dies can be opened and closed by the driving power also, and no stopping of a machine is necessary; so that several advantages of considerable importance may be gained by mounting the dies in a running head, a plan which has been generally adopted in late years by machine tool makers both in England and America.

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I came now to the eastern boundary of the town, whence the streets slope gently towards the bank of the Meuse. Here I had an atrociously fantastic view of the burning mass of houses. I fell in with a crowd of dead-drunk soldiers, who first handed my papers on from the one to the other, but as soon as they understood that I was a Netherlander they showed no hostility.

"What do you want herewhat are you here for?"I now come to note a matter in connection with draughting to which the attention of learners is earnestly called, and which, if neglected, all else will be useless. I allude to indigestion, and its resultant evils. All sedentary pursuits more or less give rise to this trouble, but none of them so much as draughting. Every condition to promote this derangement exists. When the muscles are at rest, circulation is slow, the mind is intensely occupied, robbing the stomach of its blood and vitality, and, worse than all, the mechanical action of the stomach is usually arrested by leaning over the edge of a board. It is regretted that no good rule can be given to avoid this danger. One who understands the evil may in a degree avert it by applying some of the logic which has been recommended in the study of mechanics. If anything tends to induce indigestion, its opposite tends the other way, and may arrest it; if stooping over a board interferes with the action of the digestive organs, leaning back does the opposite; it is therefore best to have a desk as high as possible, stand when at work, and cultivate a constant habit of straightening up and throwing the shoulders back, and if possible, take brief intervals of vigorous exercise. Like rating the horse-power of a steam-engine, by multiplying the force into the velocity, the capacity of a man can be estimated by multiplying his mental acquirements into his vitality."Yes," I reply, "it is bad, very bad, but is it really all true?"

It is well for an apprentice to invent or demonstrate all that he canthe more the better; but as explained in a previous place, what is attempted should be according to some system, and with a proper object. Time spent groping in the dark after something of which no definite conception has been formed, or for any object not to fill an ascertained want, is generally time lost. To demonstrate or invent, one should begin methodically, like a bricklayer builds a wall, as he mortars and sets each brick, so should an engineer qualify, by careful study, each piece or movement that is added to a mechanical structure, so that when done, the result may be useful and enduring.During the next days I found a hospitable domicile at the convent of the Sacred Heart on the Namur Canal ("Naamsche Vest"). It is a seminary for missionaries, and when I went to them for the first136 time I had a letter from their head, the "provincial" in The Netherlands, who sent the order that all the theological students should be transferred to The Netherlands as quickly as possible. They received me with the greatest kindness, and ever since I enjoyed their hospitality.

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"Then a frightful thing happened. The men had finished65 breakfast, some were sleeping quietly in spite of the thundering noise. The assault was expected to commence during the next night.He thought that it was sufficiently protected by the immense Red Cross flag, and the words written on the door by the Germans themselves: "Professor Noyons, Netherland physician, to be spared." But he had been mistaken. The soldiers did not respect anything, and had forced an entry into the house, wounded that servant, and then wrecked everything in the most scandalous manner. Beautiful large Japanese jars had been smashed to pieces, valuable furniture damaged by knocking and breaking large pieces out of it with rifles and bayonets. A fine carpet was burned, as well as many pieces of furniture. A hole was burned even in the floor.

"In which street?"The gauging system has been no little retarded by a selfish and mistaken opinion that an engineering establishment may maintain peculiar standards of its own; in fact, relics of this spirit are yet to be met with in old machines, where the pitch of screw-threads has been made to fractional parts of an inch, so that engineers, other than the original makers, could not well perform repairing, or replace broken parts.Such tools consist of a combination of cutting edges, all of which may be said to depend on each one; because if one breaks, the next in order will have a double duty to perform, and will soon followa reversal of the old adage, that 'union is strength,' [142] if by strength is meant endurance.

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Apr-17 01:48:21