History and Progress of the Steam Engine: With a Practical Investigation of Its Structure and ApplicationT. Kelly, 1834 - 859 σελίδες |
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admitted aperture apparatus applied atmosphere attached axis axle bars beam boiler bottom carriage cause centre chimney circular cistern coal cock communication condenser connected connecting rod construction crank cylinder descend described diameter effect elastic equal escape expansion experiments feet fire fixed flue fluid fly wheel force friction frustrum fuel furnace groove heat hole hollow horizontal inch inches of mercury inclined plane injection invention iron latent heat lever Liverpool lower machine machinery means metal miles moving packing paddle-wheel paddles pass passage patent piston rod placed plate pounds pressure prevent produced propelling pump purpose quantity rail rail-way reciprocating engine represents revolve ring Rotary Engine round screwed shaft shut side sliders sliding smoke space steam boats steam engine steam pipe steam-tight stroke stuffing box supply surface temperature tion tube turned upper vacuum valve vapour vertical Watt weight
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Σελίδα 3 - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...
Σελίδα 79 - I intend, in many cases, to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the same manner as the pressure of the atmosphere is now employed in common fire engines. In cases where cold water cannot be had in plenty, the engines may be wrought by this force of steam only, by discharging the steam into the open air, after it has done its office.
Σελίδα 42 - Papin's digester, and formed a species of steam-engine by fixing upon it a syringe, one-third of an inch diameter, with a solid piston, and furnished also with a cock to admit the steam from the digester, or shut it off at pleasure, as well as to open a communication from the inside of the syringe to the open air, by which the steam contained in the syringe might escape. When the communication between the digester and syringe was opened, the steam entered the syringe, and by its action upon the piston...
Σελίδα 3 - So that, having a way to make my vessels so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run like a constant fountain stream forty feet high.
Σελίδα 457 - In a factory engine, the part of the stroke at which the steam is cut off must be regulated by the governor. Fig. 9 shows a plan of a governor, which shifts the wiper for working the cut-off valves, so as to cut off the steam later, whenever the engine goes too slow ; and if the engine happens to work above its proper speed, it puts the wiper into a position to give the...
Σελίδα 588 - Liverpool, setting forth that they considered " the present establishments for the transport of goods quite inadequate, and that a new line of conveyance has become absolutely necessary to conduct the increasing trade of the country with speed, certainty, and economy.
Σελίδα 598 - 7th. — The engine to be delivered complete for trial, at the Liverpool end of the railway, not later than the 1st. of October next. " 8th. — The price of the engine which may be accepted, not to exceed ^550. delivered on the railway; and any engine not approved, to be taken back by the owner. " NB — The Railway Company will provide the engine tender with a supply of water and fuel for the experiment. The distance within the rails is four feet eight inches and a half.
Σελίδα 751 - In some cases after the flame has passed through the burning fuel I cause it to pass through a very hot funnel, flue, or oven, before it comes to the bottom of the boiler, or to the part of the furnace where it is proposed to melt metal or perform other office, by which means the smoke is still more effectually consumed. In other cases I cause the flame to pass immediately from the fire-place into the space under a boiler, or into the bed of a melting or other furnace.
Σελίδα 324 - ... feet in a mile, retards the speed of one of these engines in a very great degree ; so much so, indeed, that it has been considered necessary, in some parts where they are used, to aid their ascent with their load by fixed engines, which drag them forward by means of ropes coiling round a drum. The...
Σελίδα 42 - My attention was first directed in the year 1759 to the subject of steam-engines, by the late Dr Robison, then a student in the University of Glasgow, and nearly of my own age. He at that time threw out an idea of applying the power of the steam-engine to the moving of wheel-carriages, and to other purposes, but the scheme was not matured, and was soon abandoned on his going abroad.