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ENGLISH 小泽医生和EraClean超声波清洗机Pens will generally fill by capillary attraction; if not, they should be made wet by being dipped into water; they should not be put into the mouth to wet them, as there is danger of poison from some kinds of ink, and the habit is not a neat one.Forging plant consists of rolling mills, trip-hammers, steam-hammers, drops, and punches, with furnaces, hearths, and blowing apparatus for heating. A general characteristic of all forging machines is that of a great force acting throughout a short distance. Very few machines, except the largest hammers, exceed a half-inch of working range, and in average operations not one-tenth of an inch.A finisher's engine lathe consists essentially of a strong inflexible shear or frame, a running spindle with from eight to sixteen changes of motion, a sliding head, or tail stock, and a sliding carriage to hold and move the tools.

I had already been near Huy, at a time when several burning houses shrouded the whole town in clouds of smoke. On August 24th, at ten o'clock at night, some shots had been fired in the neighbourhood of the viaduct. This was a sign for hundreds of soldiers to begin shooting at random and arrest several persons. Several houses were perforated like sieves by bullets, and an entire street of twenty-eight houses, the Rue du Jardin, was reduced to ashes. No civilians were killed.An engineer may direct and control work without a knowledge of practical fitting, but such control is merely a commercial one, and cannot of course extend to mechanical details which are generally the vital part; the obedience that may thus be enforced in controlling others is not to be confounded with the respect which a superior knowledge of work commands.The officer went on shaking his head at my answers, and I felt as if this might be the end of my fine little adventure. But I could not tell him that I had gone to Lige with that permit for Vis!

"Yes, sir," I replied, "excepting my pocket-knife."Direct action and reaction are equal; if a force is exerted in any direction there must be an equal force acting in the opposite direction; a machine must absorb its own strains.

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But here he looked at me in a curious manner, scrutinising my face, as if he asked himself: "Is he pulling my leg, or not?" But not a muscle in my face moved, so that the "Captain" nodded approvingly ... and wrote out a pass for me to go to Vis! I was not allowed to go to Lige, for, as he said, he did not yet know himself how matters stood there. The other officers overwhelmed me with questions: how matters stood in The Netherlands, and whether Great Britain had already27 declared war against us? I think that at that question I looked utterly perplexed, for in the same breath they told me all they knew about the danger of war for The Netherlands: Great Britain first sent an ultimatum to The Netherlands, to force her into joining the Allies against Germany, and as she had refused, the British Fleet was now on its way to Flushing. I explained to them in detail that they were utterly wrong, but they believed only a half of what I said.Die-cutting produces screws which may not be true, but are still sufficiently accurate for most uses, such as clamping and joining together the parts of machinery or other work.

One of the peculiarities of trip-hammers as machines is the mechanical difficulties in connecting them with the driving power, especially in cases where there are a number of hammers to be driven from one shaft.CHAPTER VIThe auxiliary departments, if disposed about an erecting shop in the centre, should be so arranged that material which has to pass through two or more departments can do so in the order of the processes, and without having to cross the erecting shop. Casting, boring, planing, drilling, and fitting, for example, should follow each other, and the different departments be arranged accordingly; whenever a casting is moved twice over the same course, it shows fault of arrangement and useless expense. The same rule applies to all kinds of material.

Many civilians had been put to death, accused of having shot from the houses, and others for refusing to give up requisitioned food. Probably they had none, as preceding military divisions had already taken away all there was. Then some civilians were killed for refusing to work for the enemy. The houses of all these "condemned" had been burnt, and everything the soldiers fancied was looted. As a matter of fact, nearly all the soldiers I met later on were drunk, and they worried me constantly. Only when I had proved to be a Netherlander, they behaved a little better, and started abusing "the cursed Belgians," who, according to them, were all francs-tireurs.

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7. The effect of pneumatic machinery in reducing insurance rates and danger of fire.(1.) Why does machinery involve so many cylindrical forms?(2.) Why is it desirable to have separate feed gear for turning and screw cutting?(3.) What is gained by the frictional starting gearing now applied to the finer class of lathes?(4.) How may the alignment of a lathe be tested?(5.) What kind of deviation with a lathe carriage will most affect the truth of work performed?(6.) How may an oval hole be bored on a common slide lathe?(7.) How can the angular [128] ways of a lathe and the corresponding grooves in a carriage be planed to fit without employing gauges?(8.) Give the number of teeth in two wheels to cut a screw of ten threads, when a leading screw is four threads per inch?"This? Nothing, sir, nothing."

CHAPTER XXII. PATTERN-MAKING AND CASTING.It was a chilly night, and a dense heavy fog made it impossible to see anything.... My "bed-fellows" raged and fumed at me, saying that I was one of those villains who had treacherously shot at them. I shivered from the cold, and felt, as it were,128 the dampness of the wet stone floor entering my system.A drawing being inked in, the next things are tints, dimension, and centre lines. The centre lines should be in red ink, and pass through all points of the drawing that have an axial centre, or where the work is similar and balanced on each side of the line. This rule is a little obscure, but will be best understood if studied in connection with a drawing, and perhaps as well [84] remembered without further explanation.

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