Pretty work to descend with the huge pump-rods (garnished with large iron bolts) working violently, making strokes of 12 feet, close to our elbows; and with a nearly bottomless pit at the foot of every ladder, where we had to turn round the foot of the ladder walking on only a narrow board.

Or my Lady Betty, having taken the waters in the pump-room and lent her ear to such gossip as is abroad so early, is now handed to her chair and goes round by Gregory's to read a bit.

When the air pump piston descends, its pressure on the liquid under it will force open the valve in it, through which the hot water will ascend; and when the bucket descends to the bottom of the pump barrel, the warm water which was below it will all have passed above it, and cannot return.

Two half-naked men, their skins shining with sweat, turned the air-pumps handles, and the rattle of the cranks cut the dull rumble of the surf.

To mitigate the shock of the air pump valves in cases in which a high speed has been desirable, as in the case of marine engines employed to drive the screw propeller without intermediate gearing, India rubber discs, resting on a perforated metal plate, are now generally adopted; but the India rubber should be very thick, and the guards employed to keep the discs down should be of the same diameter as the discs themselves.

"I'm genuinely sorry for the feathered and furry game of the woods when the Great Hunter breaks loose with that terrible pump-gun.

Then we examined one of the great pumping engines, which is considered the best in the country: and some other engines.

In fast engines, with the air pump bucket moving as fast as the piston, the area through the foot and discharge valves should be equal to the area of the pump itself, and the waste water pipe should be of about the same dimensions.

"Afloat she shall be, while a pump-break can work.

A.The cataract consists of a small pump-plunger b and barrel, set in a cistern of water, the barrel being furnished on the one side with a valve, c, opening inwards, through which the water obtains admission to the pump chamber from the cistern, and on the other by a plug, d, through which, if the plunger be forced down, the water must pass out of the pump chamber.

A.The cataract consists of a small pump-plunger b and barrel, set in a cistern of water, the barrel being furnished on the one side with a valve, c, opening inwards, through which the water obtains admission to the pump chamber from the cistern, and on the other by a plug, d, through which, if the plunger be forced down, the water must pass out of the pump chamber.

The piston rods enter these arms at a A. The cross head is 8 inches diameter where it is embraced by the connecting rod at e, and 7 inches diameter where the air pump and feed pump arms are fixed on.

"Seems to be in force, sir, anyhow!" The taxi-cab pulled up at the little gate leading into Kensington Gardens by the pumping-station, and Blindway, followed by two other men, hurriedly descended and joined his superior.

Q.To what is this loss of effect to be chiefly ascribed? A.Mainly to the inertia of the water, which, if the pump piston be drawn up very rapidly, cannot follow it with sufficient rapidity; so that there may be a vacant space between the piston and the water; and at the return stroke the momentum of the water in the pipe expends itself in giving a reverse motion to the column of water approaching the pump.

Meanwhile we have been thinking of a way to get at the suction of the pump: a hole is being made in the engine-room bulkhead, the coal between this and the pump shaft will be removed, and a hole made in the shaft.

This brings in the Doctor, who suggests the following remedies: "Give him a bucket of dry hot ashes to eat, Groom him down with a bezom stick, And give him a yard and a half of pump water to drink.

" The pedestrian, feeling dizzier than ever, sat down upon the pump platform.

I will refer to some results accomplished with pumping mills: In the spring of 1881 there was erected for Arkansas City, Kansas, a 14-foot diameter pumping wind mill; a 32,000-gallon water tank, resting on a stone substructure 15 feet high, the ground on which it stands being 4 feet higher than the main street of the town.

The upper part of the air pump communicates with a small cistern S, called the hot well, through a valve opening outwards and called the delivery valve.

From the center of the cross head, a link runs to the main pump-bob, which operates a double line of 16 inch pumps, 10 foot stroke.

Between the bottom of the stuffing box of the pump cover and the eye of the valve seat a short pipe extends encircling the pump rod, its lower end checked into the eye of the valve seat, and its upper end widening out to form the bottom of the stuffing box of the pump cover.

It was chopped off by the crack of a rifle, and Lew Hervey spurred from behind a neighboring hill and plunged after Alcatraz pumping shot on shot at the fugitive.

Then there are pumping-songs.

For this purpose I unrigged the air-pump apparatus, and almost, but not quite, closed the valve, leaving an aperture about the twentieth part of an inch in diameter.

It was a favorite amusement with us passengers on board the to go forward about pumping-time to the break of the deck and listen.