The simplicity of the operation of this machine

The simplicity of the operation of this machine
"The simplicity of the operation of this machine, together with its effectiveness, and very apparent durability, renders it decidedly the most important and valuable apparatus yet developed in hydraulics, for forcing a portion of a running stream of water to any elevation, proportionate to the fall obtained. It is perfectly applicable where no more than eighteen inches fall can be had; yet, the greater the fall applied, the more powerful the operation of the machine, and the higher the water may be conveyed. The relative proportions between the water raised, and wasted, is dependent entirely upon the relative height of the spring or source of supply above the ram, and the elevation to which it is required to be raised. The quantity raised varying in proportion to the height to which it is conveyed, with a given fall; also, the distance which the water has to be conveyed, and consequent length of pipe, has some bearing on the quantity of water raised and discharged by the ram; as, the longer the pipe through which the water has to be forced by the machine, the greater the friction to be overcome, and the more the power consumed in the operation; yet, it is common to apply the ram for conveying the water distances of one and two hundred rods, and up elevations of one and two hundred feet. Ten feet fall from the spring, or brook, to the ram, is abundantly sufficient for forcing up the water to any elevation under say one hundred and fifty feet in height, above the level of the point where the ram is located; and the same ten feet fall will raise the water to a much higher point than above last named, although in a diminished quantity, in proportion as the height is increased. When a sufficient quantity of water is raised with a given fall, it is not advisable to increase said fall, as in so doing the force with which the ram works is increased, and the amount of labor which it has to perform greatly augmented, the wear and tear of the machine proportionably increased, and the durability of the same lessened; so that economy, in the expense of keeping the ram in repair, would dictate that no greater fall should be applied, for propelling the ram, than is sufficient to raise a requisite supply of water to the place of use. To enable any person to make the calculation, as to what fall would be sufficient to apply to the ram, to raise a sufficient supply of water to his premises, we would say, that in conveying it any ordinary distance, of say fifty or sixty rods, it may be safely calculated that about one-seventh part of the water can be raised and discharged at an elevation above the ram five times as high as the fall which is applied to the ram, or one-fourteenth part can be raised and discharged, say ten times as high as the fall applied; and so in that proportion, as the fall or rise is varied. Thus, if the ram be placed under a head or fall of five feet, of every seven gallons drawn from the spring, one may be raised twenty-five feet, or half a gallon fifty feet. Or with ten feet fall applied to the machine, of every fourteen gallons drawn from the spring, one gallon may be raised to the height of one hundred feet above the machine; and so in like proportion, as the fall or rise is increased or diminished.

Fonte: Rural Architecture. Farm Houses.