The Operative Mechanic, and British Machinist: Being a Practical Display of the Manufactories and Mechanical Arts of the United Kingdom, Volume 1 |
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Common terms and phrases
angles applied axis axle bottom brass bricks bucket called centre circle circumference cock colour common construction copal copper cupel cylinder described diameter draw edge effect ellipsis engine epicycloid equal fastened feet fixed flax force four frame friction frustum geer groove gudgeon heat hole horizontal hour inches iron joint length lever linseed oil litharge lower machine machinery manner matrass means metal mill mill-stone mortise and tenon motion mould moving nitrous acid operation pallet pass pendulum perpendicular piece pinion pipe piston placed plane plate pounds pressure proportion pulley pump quantity radius rail raised ratchet-wheel represented rollers rope round sandarac screw shaft side sliding spindle square steam steel stone sufficient surface teeth thickness threads tooth tube turned turpentine upper valve varnish velocity vertical vessel water-wheel weight wheel whole wire wood yarn
Popular passages
Page 684 - Multiply the sum of the two parallel sides by the perpendicular distance between them, and half the product will be the area.
Page 674 - Proportion, when the ratio is the same between every two adjacent terms, viz. when the first is to the second, as the second to the third, as the third to the fourth, as the fourth to the fifth, and so on, all in the same common ratio.
Page 683 - Sides given. The square of the hypotenuse is equal to both the squares of the two legs. Therefore, 1.
Page 676 - Prob. 7. Through a given point C, to draw a line parallel to a given line AB.
Page 59 - He broke a rope of two inches in circumference ; though, from his awkward manner, he was obliged to exert four times more strength than was necessary. He lifted a rolling stone of eight hundred pounds' weight with his hands only, standing in a frame above it, and taking hold of a chain fastened thereto.
Page 715 - ... arrangement on the rack. Each letter or stamp must be tried as to its heat, by imprinting its mark on the raw side of a piece of waste leather. A little practice will enable the workman to judge of the heat. The tool is now to be pressed downwards on the gold leaf, which will, of course, be indented and show the figure imprinted on it. The next letter or stamp is now to be taken and...
Page 115 - ... 4. Divide the circumference of the wheel in feet by the velocity of its floats in feet per second, and the quotient will be the number of seconds in which the wheel turns round.
Page 764 - ... easy and simple in the extreme, and so evidently efficient in its application, that it cannot but excite surprise that, in the present highly improved state of our manufactures, such a communication should be made as a discovery entirely new. Instead, therefore, of the customary mode of hardening the blade from the anvil, let it be passed immediately from the hands of the forger to the grinder ; a slight application of the stone will remove the whole of the scale or coating, and the razor will...
Page 147 - ... and a second quantity will be had. Multiply the area of the millstone by the weight of a cubic foot of the same stone, for a third quantity. Multiply the first quantity by the second, and divide the product by the third, and the quotient will be the weight required. 2. To find the number of cubic feet in the turning millstone, supposing it to have no eye :—From the weight of the spindle and lantern subtract the quantity found by the preceding rule, for the first number. Subtract this first...
Page 180 - First, I use two vessels in which the steam is to act, and which in other steam engines are called cylinders. Secondly, I employ the steam after it has acted in the first vessel to operate a second time in the other, by permitting it to expand itself...