hydraulic ram


  • WordNet 3.6
    • n hydraulic ram a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level
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Webster's Revised Unabridged Dictionary
    • Hydraulic ram a machine for raising water by means of the energy of the moving water of which a portion is to be raised. When the rush of water through the main pipe d shuts the valve at a, the momentum of the current thus suddenly checked forces part of it into the air chamber b, and up the pipe c, its return being prevented by a valve at the entrance to the air chamber, while the dropping of the valve a by its own weight allows another rush through the main pipe, and so on alternately.
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Chambers's Twentieth Century Dictionary
    • Hydraulic ram an automatic pump worked by the pressure of a column of water in a pipe, and the force acquired by intermittent motion of the column
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Chambers's Twentieth Century Dictionary
From Gr. hydōr, water, aulos, a pipe.


In literature:

Have nothing to do with useless people, you cannot get wool by shearing a hydraulic ram.
"Supreme Personality" by Delmer Eugene Croft
The plates are held in position by hydraulic rams, which also prevent bulging.
"Scientific American Supplement, No. 803, May 23, 1891" by Various
With respect to the action of the more protected pits, the principle of the hydraulic ram not unnaturally suggests itself.
"Ice-Caves of France and Switzerland" by George Forrest Browne
The experiment in which the plunger on the hydraulic ram is immersed in sand and covered with water does not seem to be conclusive.
"Pressure, Resistance, and Stability of Earth" by J. C. Meem
Their gradual increase is betrayed by pulsations like those of a hydraulic ram.
"Social Life in the Insect World" by J. H. Fabre
A number of such pots are placed one above another, and then rammed together by a powerful hydraulic ram.
"Cocoa and Chocolate" by Arthur W. Knapp
Engines, hydraulic rams, and water-wheels are also employed.
"Agriculture for Beginners" by Charles William Burkett
The water power trust won't be able to get in here with a hydraulic ram!
"Still Jim" by Honoré Willsie Morrow
Where the stream is on a lower level than the building a hydraulic ram can be used.
"Elements of Plumbing" by Samuel Dibble
Of appliances utilizing the forces of Nature, perhaps the simplest efficient machine is the hydraulic ram.
"The Home Medical Library, Volume V (of VI)" by Various
Means of securing fall for hydraulic ram 174 46.
"Rural Hygiene" by Henry N. Ogden
Chain jammed and packed under th' quadrant, like it had been set by a hydraulic ram!
"Merchantmen-at-Arms" by David W. Bone
And now this or that result of a "hydraulic ramming" would disable one of the others temporarily.
"Sea-Hounds" by Lewis R. Freeman
It was as purely a mechanical operation as is the work of a hydraulic ram.
"Under the Southern Cross" by Maturin M. Ballou
Can a hydraulic ram be constructed to discharge 1,000 gallons of water per minute?
"Scientific American, Vol. XXXIX.--No. 24. [New Series.], December 14, 1878" by Various
The hydraulic ram is a machine that gets its power from the momentum of running water.
"Farm Mechanics" by Herbert A. Shearer
It was driven by 24 hydraulic rams.
"Smithsonian Institution - United States National Museum - Bulletin 240" by Anonymous
In hydraulics there are rams, water closets, pumps, and turbine water wheels.
"The Progress of Invention in the Nineteenth Century." by Edward W. Byrn

In news:

The punch presses combine a high-speed, 20-metric-ton hydraulic ram with a 48-station turret.
I am just wondering if anyone might know a way to make some sort of functional hydraulic rams, just bacically somthing that can be positionable but strong enough to stabilize some weight.
The punch presses combine a high-speed, 20- metric-ton hydraulic ram with a 48-station turret.
Hyson Products, Brecksville, OH, has published a new 12-page brochure cataloging its expertise in supplying ram cushions, bolster cushions, hydraulic controllable cushions and custom force-generating systems for metal stampers.
The design features also include air cannons, heaters, and hydraulic ram.
Hydraulic rams first compress the block to provide the uniform dimension as mentioned above.
One of the hydraulically actuated rams in a blow out preventer (blind, shear, pipe or slip).