. American engineer and railroad journal . will ilo. This extraordinary reportstands printed in a Government publication, signed by menwho were, or are, eminent in mechanics, and we can only de-plore the stupidity as well as presumption of the commis-sion who thus disposed of a subject that had twenty years be-fore been carefully investigated by such men as Sir John Reu-nie, Professor Cowper, Mr. Whitelaw, Dr. James Black, Pro-fessor Rankine, and many others. The most astonishing partis, however, that this report was passed and signed by menwho we can hardly suppose would fail to perceive its
. American engineer and railroad journal . will ilo. This extraordinary reportstands printed in a Government publication, signed by menwho were, or are, eminent in mechanics, and we can only de-plore the stupidity as well as presumption of the commis-sion who thus disposed of a subject that had twenty years be-fore been carefully investigated by such men as Sir John Reu-nie, Professor Cowper, Mr. Whitelaw, Dr. James Black, Pro-fessor Rankine, and many others. The most astonishing partis, however, that this report was passed and signed by menwho we can hardly suppose would fail to perceive its absurdity. BLAKES PUMP. Returning again to American pumps, in 1831 Messrs. Blake,of the New Steam Mills, in Connecticut, invented one, shownin fig. 15, and well worthy of attention here as being the firstof its type, and almost identical with Bessemers of 1843 and1849. It is, in fact, the better machine if carefully compared,but subject, like nearly all disk pumps, to lateral thrust uponthe impeller that would cause difficulty in Fig- IS- It was in every sense a departure, and is by no meansobsolete at this day for high lifts. The force of the issuingwater, or its tangential energy, is lost, as may be seen by theannular casing and change of the waters course, but this losshas to be measured by the relative speed between the wheel andoff-flowing water, as has been explained. This invention hasof right a prominent place in the history of centrifugal pumps. Andrews pcmp. The next American pump to follow was that of Andrews,invented or published in 1839, the first American pump with acylindrical discharge chamber. If the Massachusetts pumpcame near anticipating our best modern practice, the Andrewspump completed the matter, and leaves room for the lamentof Lord Byron that those thieving ancients have stolen all ofour modern ideas. The construction, in side view, is identical with the Massa-chusetts pump invented in 1818, and shown in fig. 13, thedifference not demanding a
Size: 2330px × 1073px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
