Iron: An Illustrated Weekly Journal for Iron and Steel Manufacturers, Metallurgists, Mine Proprietors, Engineers, Shipbuilders, Scientists, Capitalists ..., 2권Perry Fairfax Nursey Knight and Lacey, 1824 |
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27 페이지
... levers and screw- jack , and it is hence easy to conceive how much greater they may be ac complished by the hydraulic press , which is not only possessed of much greater power , but requires the as- sistance of fewer hands ...
... levers and screw- jack , and it is hence easy to conceive how much greater they may be ac complished by the hydraulic press , which is not only possessed of much greater power , but requires the as- sistance of fewer hands ...
60 페이지
... lever was projected into the pipe about 1,500 yards from each post - office , balls striking against which , in their passage , caused a bell to ring , which gave notice of their approach , and at the same time awoke such dreamers as ...
... lever was projected into the pipe about 1,500 yards from each post - office , balls striking against which , in their passage , caused a bell to ring , which gave notice of their approach , and at the same time awoke such dreamers as ...
67 페이지
... after hav- ing done its work , as the acting power , must , in its turn , become the resistance ; and if we consider a wheel , lever , pendulum , or machine of any con- struction , we r 2 67 and the divisions of their circumferences ...
... after hav- ing done its work , as the acting power , must , in its turn , become the resistance ; and if we consider a wheel , lever , pendulum , or machine of any con- struction , we r 2 67 and the divisions of their circumferences ...
68 페이지
... lever , fixed firmly in an axle revolving on centres , will become an acting power , and cause the lever to sink , until it has arrived at its lowest point , and it will then remain at rest ; but , if I place another lever horizontally ...
... lever , fixed firmly in an axle revolving on centres , will become an acting power , and cause the lever to sink , until it has arrived at its lowest point , and it will then remain at rest ; but , if I place another lever horizontally ...
69 페이지
... levers . SUCH a machine , therefore , could not be made . Again , if , instead of apply- ing force to move these weights ... lever , would act more for- cibly ; in like manner , also , would the bullets roll back again , as soon as the ...
... levers . SUCH a machine , therefore , could not be made . Again , if , instead of apply- ing force to move these weights ... lever , would act more for- cibly ; in like manner , also , would the bullets roll back again , as soon as the ...
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advantage angle appears applied artizans atmosphere Birmingham body boiler bottom centre circle circumference colour combination Committee communication condenser construction copper correspondent cylinder diameter diurnal motion draw effect employed engine equal experiment feet fire force France friction GENTLEMEN give given Glasgow Hansard heat HENRY DEACON honour improvement inches Institution invention iron James Watt John Heathcoat labour laws length lever London machine machinery manner manufacture matter means mecha Mechanic's Magazine mechanics meeting ment metal method Metron mode motion neral obedient servant observed opinion paper perpetual motion piece pipe piston present pressure principle produced purpose quantity quired readers ship side solder square steam steam-engine suppose surface tained tical timber tion tube valve velocity vessel Watt weight wheel whole wood workmen zinc
인기 인용구
228 페이지 - An account of experiments for determining the length of the pendulum vibrating seconds in the latitude of London.
115 페이지 - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
360 페이지 - Observations on a general iron railway, or land steam conveyance, to supersede the necessity of horses in all public vehicles ; showing its vast superiority in every respect over all the present pitiful methods of conveyance by turnpike roads, canals, and coasting traders ; containing every species of information relative to railroads and locomotive engines.
307 페이지 - To describe an isosceles triangle, having each of the angles at the base double of the third angle.
329 페이지 - If one angle of a parallelogram is a right angle, all the other angles are right angles, and the figure is a rectangle.
131 페이지 - I thought it derogatory to my new dignity as a manufacturer, to make dolls' eyes. He took me into a room quite as wide, and perhaps twice the length of this, and we had just room to walk between stacks, from the floor to the ceiling, of parts of dolls. He said, 'These are only the legs and arms; the trunks are below.
325 페이지 - ... found in the shops, and is worked with singular facility. Recent sections made with a sharp knife or scissors, when brought together and pressed, adhere so firmly as to resist rupture as strongly as any other part, so that if two sheets be laid together and cut round, the mere act of cutting joins the edges, and a little pressure on them makes a perfect bag of one piece of substance. The adhesion of the substance in those parts where it is not required is entirely prevented by rubbing them with...
368 페이지 - ... by blowing the fire it was made to take a few strokes, but required an enormous quantity of injection water, though it was very lightly loaded by the column of water in the pump. It soon occurred...
339 페이지 - ... which water might be considered to bear the same relation to so minute a portion of metal as the sea. to the metallic sheeting of a ship. The result of this experiment was the same as that of all the others ; the defended copper underwent no change ; the undefended tarnished, and deposited a green powder. " Small pieces of zinc were soldered to different parts of a large plate of copper, and the whole plunged in...
204 페이지 - ... the radicles of barley, produced in the process of malting, which are separated before the malt is sent to market. About a bushel of these is thrown into the boiler, and when the steam is again raised, an immediate effect is visible; for there is not only a plentiful supply of steam to produce the full working speed of the engine, but an excess of it going waste at the safety valve: this singular effect will continue for several days.