2021-04-18 10:08:33

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ENGLISH INTRODUCTION

At seven o'clock in the evening I entered Lige; and so far I had achieved my end.Second.The steam establishes the greatest possible elasticity in the connection between a hammer and the driving power, and at the same time serves to cushion the blows at both the top and bottom of the stroke, or on the top only, as occasion may require."Oh yes, it has been destroyed already a couple of times, but we shall teach them a lesson! Why did not the Belgians allow us to pass through their country? What can their little army do against us? As soon as a sufficient number have crossed we shall go for these forts, then on to Brussels, and within a fortnight we shall be in Paris. Lige we have taken already."

(1.) Why have belts been found better than shafts for transmitting power through long distances?(2.) What are the conditions which limit the speed of belts?(3.) Why cannot belts be employed to communicate positive movement?(4.) Would a common belt transmit motion positively, if there were no slip on the pulleys?(5.) Name some of the circumstances to be considered in comparing belts with gearing or shafts as a means of transmitting power.One pair each of three and one-half inch and five inch compasses, two ruling pens, two pairs of spring dividers, one for pens and one for pencils, a triangular boxwood scale, a common rule, and a hard pencil, are the essential instruments for machine-drawing. At the beginning, when "scratching out" will probably form an item in the work, it is best to use Whatman's paper, or the best roll paper, which, of the best manufacture, is quite as good as any other for drawings that are not water-shaded.

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6. Handling material in machine construction is one of the principal expenses to be dealt with; each time a piece is moved its cost is enhanced, and usually in a much greater degree than is supposed.5. As the strength of shafts is determined by their size, and their size fixed by the strains to which they are subjected, [45] strains are first to be considered."Bear up, lad! Keep courage; it will soon be different."

Proceeding from these premises, the first thing should be to examine the action of existing valve gear, to determine where this want of the dead-stroke function can best be supplied, and to gain the aid of such suggestions as existing mechanism may offer, also to see how far the appliances in use may become a part of any new arrangement."Could you ever have thought ... that ... that ... such ... a cruel ... fate would overwhelm us? What crime did these poor people commit? Have we not given all we had? Have we not strictly obeyed their commands? Have we not done more than they asked for? Have we not charitably nursed their wounded in this House? Oh! they profess deep gratitude to me. But ... why then? There is nothing left in the House for the aged refugees whom we admitted, for the soldiers we nurse; our doctor has been made a prisoner and taken away, and we are without medical help. This is nothing for the Sisters and myself, but all these unfortunate creatures ... they must have food....""But where did you stay then during the night?"

An old smith who has stood at the forge for a score of years will take the same interest in tempering processes that a novice will. When a piece is to be tempered which is liable to spring or break, and the risk is great, he will enter upon it with the same zeal and interest that he would have done when learning his trade.In making up the time charged to different machines during their construction, a good plan is to supply each workman with a slate and pencil, on which he can enter his time as so many hours or fractions of hours charged to the respective symbols. Instead of interfering with his time, this will increase a workman's interest in what he is doing, and naturally lead to a desire to diminish the time charged to the various symbols. This system leads to emulation among workmen where any operation is repeated by different persons, and creates an interest in classification which workmen will willingly assist in.(1.) How may gauging implements affect the division of labour?(2.) In what way do standard dimensions affect the value of machinery?(3.) Why cannot cylindrical joints be fitted by trying them together?(4.) Under what circumstances is it most important that the parts of machinery should have standard dimensions?(5.) Which sense is most acute in testing accurate dimensions?(6.) How may slight variations in dimensions be made apparent to sight?

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The functions required in machinery for handling material in a machine shop correspond very nearly to those of the human hands. Nature in this, as in all other things, where a comparison is possible, has exceeded man in adaptation; in fact, we cannot conceive of anything more perfect than the human hands for handling materiala duty that forms a great share of all that we term labour.Nearly every hour another proclamation was posted; and this made the people still more nervous. One of them brought the information that the province of Lige had to pay a war-tax of fifty million francs. Another forbade the people to be out in the streets after six o'clock p.m.; the doors must remain open, the windows show the lights. Burning and shooting were threatened if any more arms should be found, and all houses were to be searched.Fitting processes, being the final ones in constructing machinery, are more nearly in connection with its use and application; they consist in the organisation or bringing together the results of other processes carried on in the draughting room, pattern shop, foundry, and smith shop.

"Is that so? Well, the Netherlanders are our friends, and have so much in common with our people."Second.The manner of moulding and its expense, so far as determined by the patterns, which may be parted so as to be 'rammed up' on fallow boards or a level floor, or the patterns may be solid, and have to be bedded, as it is termed; pieces on the top may be made loose, or fastened on so as to 'cope off;' patterns may be well finished so as to draw clean, or rough so that a mould may require a great deal of time to dress up after a pattern is removed.

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Apr-18 10:08:33