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ply pare atmosphere to mi nee, and to blow out the poieonoaa air that accumulates therein; to ventilate buildings, Ac. if throws out of an open inf about five or six inches in diameter* seven and a half cable inches of air to each revolution, and performs two hundred and twenty-five revolutions a minute, so that it drives out 1,687^ cable feet per minute. It is a curious machine, and yet simple. It oonslsts of two sections of iron turning upon an axle In the center, with the ends cat to form auul-dnle, and the middle of each immediately opposite the axle upon which it revolves, made to conform exactly to either head of the other. Theee revolve in opposite directions In an iron case,the width of which corresponds with the length of the revolving sections. The air is admitted Into the case from below* and ejected through an opening in the top. Ihe sections revolve in oppoeite directions, and are of such length and so adjusted that when, by their simultaneous movement, the air Is forced oat of one opening, it is being brought into another, and retained until it In turn Is also driven out. Attempt to hold your hand over the asoending current. You will not want to repeat it frequently. Roll up a newspaper and hold it over it, and it will ter It to shreds and send it whirling to the very roof of the building. It is a great blow. A great sale Is expected in Chicago.REPRESENTATIONS GENERALLY FAIR.80 each machine might here be enumerated. Each has something its msker claims to be better than the tools made by other persons. We say tool, for everything here for working icon or wood the mechanics appear to call a tool, though It weigh tons. There is, howtver, as a rule, a commendable caution among the practical mechanics,and it is to their credit that there is more fair representation than is usual among men who represent the articles from which they derive their living.We remarked there was something about each tha^ was peculiar. So yesterday a prominent Eastern delegate to the Southern Commercial Convention^fter having passed through the wonderful collection, came to the flour mill of Cincinnati make. He expressed surprise at the little space into which the whole process was compressed. He said he was surprised to see so much in a little corner of the building, accustomed as he was to see great houses erected for such use.THE TOBAOCO CUTTER.Persons in visiting this hall must not be in too much of a hurry or they will miss something they would like to see. Here is a tobacco cutter, from Da j ton, for tbe manufacture of all kinds of cut tobacco. It is not every one who has seen the instrument that turns out the finest threads that are wrapped in fancy papers and at the same time will produce the chips that are only an apology for the weed. This machine moves the leaves forward between two converging metalic carriages until the mass is as solid almost as a stick of wood, then cutters revolvT ing at the rate of a thousand times a minute, chip it off in lengths from a fourth of an inch to a thread, so narrow that it would take two hundred of them to make an inch.
Newspaper Details
Cincinnati Semi Weekly Gazette
Cincinnati, Ohio, US
Tue, Oct 04, 1870
Page 3
Full Page
Clipped by
Daniel J.
USA 07 May 2025
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