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Updated: June 13, 2025
Giffard, inventor of the steam injector, had already made balloon ascents when he turned to aeronautical propulsion, and constructed a steam engine of 5 horsepower with a weight of only 100 lbs. a great achievement for his day.
Giffard's Injector, both in Europe and this country, is quite extensively used to supply the place of a pump, as independent feed for all classes of boilers. It is represented in elevation and section, figs. 65 and 66. A, steam pipe leading from the boiler. B, a perforated tube or cylinder, through which the steam passes into the space b.
She watched Arden prepare an injector, her thoughts going to what would be happening to her shortly. She didn't know the details, no, but she was fully aware that it would be at least as painful as the attack and more humiliating, because she cared about the Sandemans' opinions as she hadn't about the attackers'.
Medart opened one of the pouches on his belt and took out a small injector. "As you can see, my medikit's not that big, and I damnsure didn't think I'd need enough quidine for two months plus. I've got four doses, which is enough for about thirty hours." He felt for his carotid, triggered the painkiller into the artery, and seconds later sighed in relief. "Whew that's a lot better."
He picked a plastic cup from the dispenser, filled it from a cooler-tap with amber-colored spiced wine, and drank, tossing the cup into the disposal-bin. He placed a fresh injector on the arm of the chair, ready for the next user of the booth. Then he emerged, glancing at his Fourth Level wrist watch and mentally translating to the First Level time-scale.
The vessel, E, communicates, by means of a small bent pipe extending nearly to its bottom, with a small chamber, B, the passage of the liquid being controlled by means of the cock or tap, F. The chamber, B, is in communication, by means of a small aperture, with the nozzle, G, of an injector, T, constructed on the ordinary principles.
So as not to break the point of my fragile instrument, I prepare the way with a needle, with which I prick the victim at the spot required. I insert the tip of the loaded injector in the hole thus made and I blow. The thing is done in a moment, very neatly and in an orthodox fashion, favorable to delicate experiments. I am delighted with my modest apparatus.
Surrounding the center nozzle of the injector is an annular space through which high pressure steam passes, also into the furnace. The meaning of this steam moving along with the tar is to force a draught, as well as to raise the temperature of the tar, and so partially convert the tar into vapor; thereby making the combustion more complete.
"It is syncope," said the doctor when he came in. "She may die at any time; she may live ten years." "There is no need to telegraph for Mr. Brand?" He made a little deprecating movement with his hands. "It is not certain that she will die it is not imminent?" she asked. "No, no; she may live ten years, I said." He added a word or two of advice as to the use of the oxygen injector, and went away.
Concerning the factor of power, he says: 'When first designing this engine, I did not know how much power I might require from it. I thought that in some cases it might be necessary to allow the high-pressure steam to enter the low-pressure cylinder direct, but as this would involve a considerable loss, I constructed a species of injector.
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