Our Latest Projects
Great design is about more than style, it’s about being yoursel
FORE:A true movement of carriages is dependent upon the amount or wearing power of their bearing surface, how this surface is disposed in reference to the strain to be resisted, and the conditions under which the sliding surfaces move; that is, how kept in contact. The cutting strain which is to be mainly considered, falls usually at an angle of thirty to forty degrees downward toward the front, from the centre of the lathe. To resist such strain a flat top shear presents no surface at right angles to the strain; the bearings are all oblique, and not only this, but all horizontal strain falls on one side of the shear only; for this reason, flat top shears have to be made much heavier than would be required if the sum of their cross section could be employed to resist transverse strain. This difficulty can, however, be mainly obviated by numerous cross girts, which will be found in most lathe frames having flat tops.
Lorem ipsum dolor sit amet
FORE:CHAPTER XXV. CRANK-HAMMERS.Water-wheels, next to steam-engines, are the most common motive agents. For centuries water-wheels remained without much improvement or change down to the period of turbine wheels, when it was discovered that instead of being a very simple matter, the science of hydraulics and water-wheels involved some very intricate conditions, giving rise to many problems of scientific interest, that in the end have produced the class known as turbine wheels.
Lorem ipsum dolor sit amet
FORE: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.It was quiet enough in Churton Street. And again in Collin's Crescent, which was so near home that the long line of Lytton Avenue could be seen. But there again standing figures came out of the gloom and the car sped on.
Lorem ipsum dolor sit amet
FORE:Charlton said nothing, but from the sound of his laboured breathing it was evident that the spirit of adventure was upon him. They sat there for some time with the two doors open, so that they might see through the grimy windows into the courtyard beyond. It was weary work, and the minutes passed slowly.In what terms Socrates replied to his accusers cannot be stated with absolute certainty. Reasons have been already given for believing that the speech put into his mouth by Plato is not entirely historical; and here we may mention as a further reason that the specific charges mentioned by Xenophon are not even alluded to in it. This much, however, is clear, that the defence was of a thoroughly dignified character; and that, while the allegations of the prosecution were successfully rebutted, the defendant stood entirely on his innocence, and refused to make any of the customary but illegal appeals to the compassion of the court. We are assured that he was condemned solely on account of this defiant attitude, and by a very small majority. Meltus had demanded the penalty of death, but by Attic law Socrates had the right of proposing some milder sentence as an alternative. According to Plato, he began by stating that166 the justest return for his entire devotion to the public good would be maintenance at the public expense during the remainder of his life, an honour usually granted to victors at the Olympic games. In default of this he proposed a fine of thirty minae, to be raised by contributions among his friends. According to another account,112 he refused, on the ground of his innocence, to name any alternative penalty. On a second division Socrates was condemned to death by a much larger majority than that which had found him guilty, eighty of those who had voted for his acquittal now voting for his execution.
Lorem ipsum dolor sit amet