- Software name: appdown
- Software type: Microsoft Framwork
- size: 83MB
Waving to his two watching comrades as they grew smaller to his peering eyes, Larry turned his attention to the work of scanning, from the forward place, all the indented shore line, north, that the mist had uncovered.
Another difference between solid and expanding dies, which may be pointed out, is in the firmness with which the cutting edges are held. With a solid die, the edges or teeth being all combined in one solid piece, are firmly held in a fixed position; while with expanding dies their position has to be maintained by mechanical devices which are liable to yield under the pressure which arises in cutting. The result is, that the precision with which a screwing machine with movable dies will act, is dependent upon the strength of the 'abutment' behind the dies, which should be a hard unyielding surface with as much area as possible.
The expense of forming pattern-moulds may be considered as divided between the foundry and pattern-shop. What a pattern-maker saves a moulder may lose, and what a pattern-maker spends a moulder may save; in other words, there is a point beyond which saving expense in patterns is balanced by extra labour and waste in mouldinga fact that is not generally realised because of inaccurate records of both pattern and foundry work. What is lost or saved by judicious or careless management in the matter of patterns and moulding can only be known to those who are well skilled in both moulding and pattern-making. A moulder may cut all the fillets in a mould with a trowel; he may stop off, fill  up, and print in, to save pattern-work, but it is only expedient to do so when it costs very much less than to prepare proper patterns, because patching and cutting in moulds seldom improves them.The rest was lost to me, for the men crowded round the innkeeper, who now aired his knowledge about the occurrence and evidently spoke with true conviction. At the end of the conversation they took their tankards from the bar, and shouted and cried: "Ah, well, if that is so, vive la Hollande! vive la Belgique! vive notre roi!" Suddenly we were the best of friends.
Hello, buddy, the pilot said, without any show of dismay.It is, sir!
Machine-drawing may in some respects be said to bear the same relation to mechanics that writing does to literature; persons may copy manuscript, or write from dictation, of what they do not understand; or a mechanical draughtsman may make drawings of a machine he does not understand; but neither such writing or drawing can have any value beyond that of ordinary labour. It is both necessary and expected that a draughtsman shall understand all the various processes of machine construction, and be familiar with the best examples that are furnished by modern practice.Plato had begun by condemning poetry only in so far as it was inconsistent with true religion and morality. At last, with his usual propensity to generalise, he condemned it and, by implication, every imitative art qua art, as a delusion and a sham, twice removed from the truth of things, because a copy of the phenomena which are themselves unreal representations of an archetypal idea. His iconoclasm may remind us of other ethical theologians both before and after, whether Hebrew, Moslem, or Puritan. If he does not share their fanatical hatred for plastic and pictorial representations, it is only because works of that class, besides being of a chaster character, exercised far less power over the Greek imagination than epic and dramatic poetry. Moreover, the tales of the poets were, according to Plato, the worst lies of any, since they were believed to be true; whereas statues and pictures differed too obviously from their originals for any such illusion to be produced in their case. Like the Puritans, again, Plato sanctioned the use of religious hymns, with the accompaniment of music in its simplest and most elevated forms. Like them, also, he would have approved of literary fiction when it was employed for edifying purposes. Works like the Faery Queen, Paradise Lost, and the Pilgrims Progress, would have been his favourites in English literature; and he might have242 extended the same indulgence to fictions of the Edgeworthian type, where the virtuous characters always come off best in the end.
49It may be remarked as a general rule that the hardness of cutting tools is "inverse as the hardness of the material to be cut," which seems anomalous, and no doubt is so, if nothing but the cutting properties of edges is considered; but all cutting edges are subjected to transverse strain, and the amount of this strain is generally as the hardness of the material acted upon; hence the degree of temper has of necessity to be such as to guard against breaking the edges. Tools for cutting wood, for example, can be much harder than for cutting iron, or to state it better, tools for cutting wood are harder than those usually employed for cutting iron; for if iron tools were always as carefully formed and as carefully used as those employed in cutting wood, they could be equally hard.