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Updated: May 22, 2025
The axis of the principal shaft was supported on a piston in a vessel of oil, which considerably diminished the friction, and it was so contrived as to be accurately regulated by means of a small forcing-pump.
So that, while servants and others will shrink from novelty and at first imagine difficulties, yet many, to my knowledge, would now vastly prefer the daily removal of the bucket or the soil to either the daily working of a forcing-pump or to being called upon once a year, or once in three years, to assist in emptying a vault or cesspool."
In the same manner my sight had become feeble and indistinct; but by far the most distressing sensation was that experienced upon rising up after having rested for a few moments. I then felt the blood rush violently to the head, and the feeling produced was as if it were driven by a forcing-pump through all my veins.
His remarkable predilection in favour of the use of hydraulic arrangements is displayed in his specification of the surface-planing machinery, which includes a method of running pivots entirely on a fluid, and raising and depressing them at pleasure by means of a small forcing-pump and stop-cock, though we are not aware that any practical use has ever been made of this part of the invention.
The effect of the additional force thus brought into action can be equal only to one atmosphere, but a further improvement has been made: the vessel containing the hides is, after exhaustion, filled up with a solution of tan; a small additional quantity is then injected with a forcing-pump.
The engine passed the first post in good style; but in returning, the pipe from the forcing-pump burst and put an end to the trial. The pipe was afterwards repaired, and the engine made several trips by itself, in which it was said to have gone at the rate of from 24 to 28 miles an hour.
A forcing-pump of very small bore communicates with the bottom of the cylinder, and by the action of the pump-handle or lever, exceeding small quantities of water are forced in succession beneath the piston in the large cylinder, thus gradually raising it up, and compressing bodies whose bulk or volume it is intended to reduce.
In the bath-room must be the opening to the garret, and a step-ladder to reach it. A reservoir in the garret, supplied by a forcing-pump in the cellar or at the sink, must be well supported by timbers, and the plumbing must be well done, or much annoyance will ensue. The large chambers are to be lighted by large windows or glazed sliding-doors, opening upon the balcony.
As time went on the form of the bell was improved until that of a square or oblong box of iron came to be generally adopted. The bell now in use is that which was made in 1788 by the celebrated engineer Smeaton, who applied the air forcing-pump to it, and otherwise brought the machine to a high degree of perfection.
The supply of earth to the house is as easy as that of coals. To the closet it may be supplied more easily than water is supplied by a forcing-pump, and to the commode it can be conveyed just as coal is carried to the chamber.
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