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the much more simple and familiar process by which a shoemaker makes a pair of shoes, and he will find how inadequate mere words are to describe any mechanical operation.[13] Suffice it to say, that the machinery was of the most beautiful manufacture and finish, and even at this day will bear comparison with the most perfect machines which can be turned out with all the improved appliances of modern tools. The framing was of cast-iron, while the parts exposed to violent and rapid action were all of the best hardened steel. In turning out the various parts, Maudslay found his slide rest of indispensable value. Indeed, without this contrivance, it is doubtful whether machinery of so delicate and intricate a character could possibly have been executed. There was not one, but many machines in the series, each devoted to a special operation in the formation of a block. Thus there were various sawing-machines,--the Straight Cross-Cutting Saw, the Circular Cross-Cutting Saw, the Reciprocating Ripping-saw, and the Circular Ripping-Saw. Then there were the Boring Machines, and the Mortising Machine, of beautiful construction, for cutting the sheave-holes, furnished with numerous chisels, each making from 110 to 150 strokes a minute, and cutting at every stroke a chip as thick as pasteboard with the utmost precision. In addition to these were the Corner-Saw for cutting off the corners of the block, the Shaping Machine for accurately forming the outside surfaces, the Scoring Engine for cutting the groove round the longest diameter of the block for the reception of the rope, and various other machines for drilling, riveting, and finishing the blocks, besides those for making the sheaves. The total number of machines employed in the various operations of making a ship's block by the new method was forty-four; and after being regularly employed in Portsmouth Dockyard for upwards of fifty years, they are still as perfect in their action as on the day they were erected. They constitute one of the most ingenious and complete collections of tools ever invented for making articles in wood, being capable of performing most of the practical operations of carpentry with the utmost accuracy and finish. The machines are worked by a steam-engine of 32-horse power, which is also used for various other dockyard purposes. Under the new system of block-making it was found that the articles were better made, supplied with much greater r
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