2021-04-18 09:58:50

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ENGLISH Drilling, more than any other operation in metal cutting, requires the sense of feeling, and is farther from such conditions as admit of power feeding. The speed at which a drill may cut without heating or breaking is dependent upon the manner in which it is ground and the nature of the material drilled, the working conditions may change at any moment as the drilling progresses; so that hand feed is most suitable. Drilling machines arranged with power feed for boring should have some means of permanently disengaging the feeding mechanism to prevent its use in ordinary drilling.The permanent contraction of steel in tempering is as the degree of hardness imparted to it by the bath.

The first acquaintance whom I met on Netherland territory was a Netherland lady married to a Walloon, who kept a large caf at Vis. Before the destruction she had asked me, full of anxiety, whether the Germans would indeed carry out their86 threat and wreck everything. I had comforted her, and answered that I did not think them capable of doing such a thing. Weeping, she came to me, and reminded me of my words. The whole business, in which these young people had invested their slender capital, had been wrecked.

There is, perhaps, no one who has achieved a successful experience as an engineer but will acknowledge the advantages derived from early efforts to generate original designs, and none who will not admit that if their first efforts had been more carefully directed, the advantages gained would have been greater.As remarked in a previous place, no one can expect to prepare successful designs for machinery, who does not understand the details of its construction; he should know how each piece is moulded, forged, turned, planed, or bored, and the relative cost of these processes by the different methods which may be adopted.I was not allowed to return by bicycle, and left it at a caf at the crossing of the roads to Tongres and Riemst. A couple of days later the Germans had already abstracted the tyres.

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The excellent man went on weeping, and I was not able to console him and did not know what to say. He took my arm, and led me to the large common hall, where twenty wounded Germans lay, who had been hit in the fight for the forts. He went to one bed after the other, and, with tears in his eyes, asked each man how he felt, and inquired, "Are you ... properly ... cared for ... here? Are you?" The sick men turned round, their eyes beamed, and they stammered words full of gratitude. Others said nothing, but took the Head's hand and pressed it long and warmly.On the road from Borgloon to Thienen I had a chat with an old crone, who stood weeping by the ruins of her miserable little cottage, which she refused to leave. This little house, which strenuous zeal had enabled her to buy, was all she possessed on earth besides her two sons, both fallen through the murderous lead of those barbarians, and buried in the little garden at the back of their ruined home. Of another family, living close by, the father and two sons were murdered in the same way."10. Falloise, alderman.

The wounded civilians had been put up in the small schoolrooms. Some of them must soon die. Some had burns, but most of them were hit the previous night during the mad outbreak, the mad shooting of the drunken and riotous Germans. In another room a number of old women were crowded together, who had to fly but could not walk all the way to the Netherland frontier.The expense of patterns should be divided among and charged to the machines for which the patterns are employed, but there can be no constant rules for assessing or dividing this cost. A pattern may be employed but once, or it may be used for years; it is continually liable to be superseded by changes and improvements that cannot be predicted beforehand; and in preparing patterns, the question continually arises of how much ought to be expended on thema matter that should be determined between the engineer and the pattern-maker, but is generally left to the pattern-maker alone, for the reason that but few mechanical engineers understand pattern-making so well as to dictate plans of construction.

There lay also a woman, with one leg amputated. Her husband had been murdered, another bullet had entered the leg of the baby in her arms. Another woman had her child murdered in her arms."Hm! Hm! All right. So you intend to write friendly about us?"Some uphold the accusation on the ground of expressions in Belgian newspapers, collected in a German pamphlet. In my opinion these quotations have not the slightest value. Everyone will understand this who thinks of the excitement of journalists, whose country was suddenly and quite unexpectedly involved in a terrible war, and who felt now that as journalists they had to perform a great, patriotic duty. In their nervous, over-excited condition they sat at their desk and listened to the gossip of refugees about civilians taking part in the struggle. In their imagination they saw hordes of barbarians overrun their native soil, saw man and man, woman88 and woman, shoulder to shoulder, resisting the invader without regard for their own life. The thoughts of such journalists, whose very own country had been at war now for a few days, were not on severe logical lines; they found a certain beauty in that picture, and I can quite understand how some came to believe in it as a reality, and gloried in it.

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The feed motion in slotting machines, because of the tools being held rigidly, has to operate differently from that of planing machines. The cross-feed of a planing machine may act during the return stroke, but in slotting machines, the feed movement should take place at the end of the up-stroke, or after the tools are clear of the material; so much of the stroke as is made during the feeding action is therefore lost; and because of this, mechanism for operating the feed usually has a quick abrupt action so as to save useless movement of the cutter bar.

Tuesday night, August 18th, at about 11 o'clock, a train of luggage carts passed through Canne, and in the village the Browning of one of the soldiers in the last van went off suddenly. This was the100 signal for all Germans to start shooting indiscriminately, anywhere, at anything, happily without hitting anybody. A few tipsy soldiers went to the burgomaster's house, and no sooner had his wife opened the door for the barbarians, when a shot was fired, the bullet passing through the unfortunate lady's head into the wall opposite the door. I was there early the next morning and saw the hole. It is evident that the soldiers ill-treated the dead lady with their rifles in a horrible manner, for a large part of the wall was spattered over with blood.The third plan of boring with bars resting in bearings is more extensively practised, and has the largest range of adaptation. A feature of this plan of boring is that the form of the boring-bar, or any imperfection in its bearings, is communicated to the work; a want of straightness in the bar makes tapering holes. This, of course, applies to cases where a bar is fed through fixed bearings placed at one or both ends of a hole to be bored. If a boring-bar is bent, or out of truth between its bearings, the diameter of the hole being governed by the extreme sweep of the cutters is untrue to the same extent, because as the cutters move along and come nearer to the bearings, the bar runs with more truth, forming a tapering hole diminishing toward the rests or bearings. The same rule applies to some extent in chuck-boring, the form of the lathe spindle being communicated to holes bored; but lathe spindles are presumed to be quite perfect compared with boring bars."What?"

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Apr-18 09:58:50