2021-04-14 01:14:43

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ENGLISH Chasing produces screws true with respect to their axis, and is the common process of threading all screws which are to have a running motion in use, either of the screw itself, or the nut."The houses caught fire from burning benzine, and the flames burst out in other quarters also. On Wednesday afternoon part of the town and the northern suburb were in flames."

"We have plenty of them; but many of us fall by the treacherous shooting of the civilians; they are swine, swine! And these Belgian women ... they are the dirtiest bitches ... beastly swine...."

I will, in connection with this subject of patterns and castings, suggest a plan of learning especially applicable in such cases, that of adopting a habit of imagining the manner of moulding, and the kind of pattern used in producing each casting that comes under notice. Such a habit becomes easy and natural in a short time, and is a sure means of acquiring an extended knowledge of patterns and moulding.No wonder that the inhabitants were afraid and looked askance at me as they mistook me for a German.

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3. The course or direction of transmission, whether in straight lines or at angles.By classifying these processes, it will be seen that there is in all but a few functions to be performed by machines, and that they all act upon a few general principles. Engineering tools employed in fitting are, for example, all directed to the process of cutting. Planing machines, lathes, drilling machines, and shaping machines are all cutting machines, acting upon the same general planthat of a cleaving wedge propelled in straight or curved lines.

No subject connected with mechanics has been more thoroughly investigated than that of gearing. Text-books are replete with every kind of information pertaining to wheels, at least so far as the subject can be made a mathematical one; and to judge from the amount of matter, formul?, and diagrams, relating to the teeth of wheels that an apprentice will meet with, he will no doubt be led to believe that the main object of modern engineering is to generate wheels. It must be admitted that the teeth of wheels and the proportions of wheels is a very important matter to understand, and should be studied with the greatest care; but it is equally important to know how to produce the teeth in metal after their configuration has been defined on paper; to understand the endurance of teeth under abrasive wear when made of wrought or cast iron, brass or steel; how patterns can be constructed from which correct wheels may be cast, and how the teeth of wheels can be cut [52]by machinery, and so on.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.

4. The value of handling machinery, or the saving it effects, is as the constancy with which it operates; such machinery may shorten the time of handling without cheapening the expense.2. The necessity for, and consequent saving effected by, power-machinery for handling is mainly in vertical lifting, horizontal movement being easily performed by hand.

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(1.) Describe the different modifications of screw-cutting machines.(2.) What is gained by revolving the dies instead of the rod?(3.) What is gained by expanding dies?(4.) What is the difference between screws cut by chasing and those cut on a screw-cutting machine?Before those on the Naamsche Vest found out their mistake, the shooting was going on in the144 greater part of the town, and the excited men, who at first had been shooting at each other, soon joined the rest. Some wounded troopers were taken to one of the convents on the Vest, but a couple of hours later they were suddenly fetched away again.

"It is highly deplorable when officers or non-commissioned officers set houses on fire without the permission or order of the commanding, or, as the case may be, the senior officer, or when by their attitude they encourage the rank and file to burn and plunder.

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Apr-14 01:14:43