Quintuplex

This was entered 1 ♅. iii., in November, 1776, and had the honour of being the object to which the grand forty-foot reflector was first directed, in February, 1787, under the designation of “quadruple.” As a trapezium it was gazed at, measured, and delineated, for upwards of fifty years, when Σ. announced it “quintuplex,” by the addition of the little star E.

The use of those scientific duplex, quadruplex, and even quintuplex systems could then safely be brought into general use, and this would render possible much cheaper telegraphy.

We need to point out that in some critical missions, the performance and reliability of a triplex system may not be high enough. In this case, the level of redundancy needs to be increased beyond a triplex system—a quintuplex system (K = 1, N = 5) or a double-triplex system (K = 2, N = 3).

Indeed, physiologically considered, the liver is the great original duplex, while anatomically, it is the enigmatical quintuplex; for it has five lobes, five vessels, five ligaments, five fissures, and, singularlly^([sic]) enough, five letters spells its name.

The last-mentioned, the smallest, a girl, was the first-born of the quintuplex and is the one that has survived.

And the Pacemaker outperforms all conventional triplexes and quintuplexes.

For the purposes of this presentation, it was assumed that water was to be injected at 2,500 psig and that piston pumps graduating from small triplexes to large quintuplexes would be employed.

Typical configurations are simplexes (one plunger), triplexes (three plungers), and quintuplexes (five plungers).