TWO:For loading and unloading carts and waggons, the convenience of the old outside sling is well known; it is also a well-attested fact that accidents rarely happen with sling hoists, although they appear to be less safe than running platforms or lifts. As a general rule, the most dangerous machinery for handling or raising material is that which pretends to dispense with the care and vigilance of attendants, and the safest machinery that which enforces such attention. The condition which leads to danger in hoisting machinery is, that the power employed is opposed to the force of gravity, and as the force of gravity is acting continually, it is always ready to take advantage of the least cessation in the opposing force employed, and thus drag away the weight for which the two forces are contending; as a weight when under the influence of gravity is moved [65] at an accelerated velocity, if gravity becomes the master, the result is generally a serious accident. Lifting may be considered a case wherein the contrivances of man are brought to bear in overcoming or opposing a natural force; the imperfect force of the machinery is liable to accident or interruption, but gravity never fails to act. Acting on every piece of matter in proportion to its weight must be some force opposing and equal to that of gravity; for example, a piece of iron lying on a bench is opposed by the bench and held in resistance to gravity, and to move this piece of iron we have to substitute some opposing force, like that of the hands or lifting mechanism, to overcome gravity.The poor fellow had hidden himself, being afraid that we were Germans; but when he heard the "Get you gone, you brute!" he ventured to show himself.
TWO:To their left, as they sped on, the lighthouse poked its tower out of the drifting, dispelling fog.Hetty could stand it no longer. Her fingers went out to the electric switch, there was a sudden snap, and the room was bathed in light. There was a startling cry from a woman who stood just under the light with a bottle in her hand--the real bottle, as Hetty could see quite plainly.
- 水処理薬品
- 簡易?小型貫流ボイラ?貫流ボイラ向けに開発した純正ボイラ薬品。
TWO:The little discovery gave a new twist to Prout's thoughts as he drove down to the National Credit Bank. He had no particular object save to see the manager and impress upon him that in the interests of justice the whole thing must be kept a profound secret. There was no difficulty about that: the cashier was indignant, for he had already given his promise on the matter.
- リース?割賦販売
- 初期投資額を軽減。燃料費削減による早期返済も可能！
