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like the flat face of a pulley. What is needed is an angle of from forty to forty-five degrees; you then have a positive drive groove. It has long been my opinion that the expensive and cumbersome belt will have to take a back seat.
The PRESIDENT. We will now take up the next topic, “ Can the dust room of the picker be done away with ?” by Mr. JOHN W. WELLS * of Woodbury, N. J.
Mr. WELLS. In many picker plants the dust room would be available for holding machinery, provided by some means the dust could be taken care of. The value of such space is a good measure of the outlay which can be afforded to replace the dust room.
In handling sawdust and some fibrous substances, and in taking shavings away from planers, there is provided a dust separator. The Arlington & Curtis Company, East Saginaw, Mich., build them, and hold the patents on them. To simply describe it, it is a truncated cone of proper proportions, into which fans can discharge. Any fan discharging into the atmosphere distributes its dust and fibre in all directions. The dust room simply limits the area in which that dust is spread, and the chimney takes away the air and some of the dust. A separator limits still further the dust and fibre carried out by the fan. It also changes the directions of the air currents from straight lines to circular.
It was originally called the cyclone dust separator, as it creates a mimic cyclone within its walls. A centrifugal motion is imparted to the dust, which is blown from the dust pipe as soon as it arrives in the separator. The lint and heavy dust is carried round on the walls of the separator, and gradually falls down to the apex of the cone, and as soon as it drops out of the current of air it will drop into a bag or a proper receptacle. The simplest arrangement would be to place the pipe on the wall, and put on the separator as near as you can ; but in twostory or higher buildings it will be necessary to carry the discharge pipe above the roof, to prevent covering the buildings with dust. Another and simpler way is to carry the separator itself on top of the roof. The separator can be adjusted so as to deposit its products in any convenient place, or carried to any part of the building where the waste cleaning is to be done. If that is not done, it should be carried to the top of the roof. The economy in its use is in the economy of space, and in
* The Secretary minutes here, with great regret, the sudden death of Mr. WELLS, by accident, while in the discharge of bis duties, which occurred Nov. 9, 1892. His remarks therefore appear without revision.
, saving as much of the dust as possible before it reaches the dust room.
If it goes into this room the product is of little or no use, as it is mixed with other dust; whereas, from a separator where there were seven fans, I have collected in one day as much as four pounds of lint which required little or no cleaning, most of the heavy dust having gone up the chimney of the separator. There might be some other cleaning done after the matter leaves the separator, by passing over some trunk arrangement; but probably it would be better to take all to waste-cleaning machines.
I don't think that anybody who has a first-class dust room, with plenty of space for everything, will bother about separators unless the room is valuable. I can only speak of the small plant which I have been running for some two or three months without a dust room, and I think the results have been better than with a dust room. At our other mill our dust room is of ample size. It is no gain to use a separator, unless one prefers it, in such a case, and prefers to pay for it.
As to the price, if you put only one separator to each machine the price will be quite large, say $125 or $140 for a two-beater picker; but as the size of the separator increases the price is proportionately lessened; for six or eight fans I think $ 250 would cover the expense of the separator.
This method has been used by woollen mills to a considerable extent. In John Bromley's mill a fan takes dust from several pickers into one separator. This dust separator took the place
of a large dust room which did not keep the dust from the outside buildings. This separator was very satisfactory; it is used in other places in Philadelphia.
The PRESIDENT. You have heard the remarks of Mr. Wells. I think this is quite an important subject, and from his statements it would appear that it would be cheaper to adopt this system than to go to the expense of building dust rooms and chimneys. There are some members of the Association who have adopted the system and know something about it, and perhaps they will give us some light on the subject.
Mr. WELLS. I omitted to say that a special use of it is where a Robinson trunk is used, thus cleaning directly into the separator rather than into the dust room. The clean fibre in the trunks is saved, or some of it, and can go back into good work. I am running one cloth shear, into a separator six feet high by three feet, which takes the place of a dust room ten by fifteen feet in the basement. It formerly discharged into the wheel pit. This makes a clean arrangement, and there is no danger of fire.
The PRESIDENT. I presume that the dust chimneys that are now in use could be utilized in placing the separators.
Mr. WELLS. I suppose they might, but it would be hardly worth while, because the dust separator, if set in the roof, needs no chimney except what goes with it. If it is set outside the building it would be easier to carry it up in a separate pipe.
Mr. BOURNE. I don't know that I can add anything to what Mr. WELLS has said. I have been experimenting with it for the past three or four months. I was in hopes to have had one on long enough to try it thoroughly and see what it would accomplish before this meeting took place. I have one story of the building that I now use for a dust room, which I need for machinery; and I think I am going to be able to make that arrangement by using this device. It is wonderful how it separates the lint from the dust, the lint falling one way and the dust going off
another. I have two separators hitched onto one system of dust flues that take the dust from eight fans, from the breaker and two finishers, and they work very satisfactorily. I tried to do with one, but could not make it work. You must have it big enough so that it will take care of the fans, not blow back. By putting two separators together, they will take eight fans. The agent sent me another one big enough to take care of eight fans, which I am going to put on top of the mill. It only arrived there this morning, so I didn't have time to put it up; but I have no doubt it will do its work. I think where one has a dust room which he wants to use for some other purpose this method will enable him to do so.
The PRESIDENT. You will abandon your dust chimney?
Mr. BOURNE. Yes, sir; because the dust chimney is not big enough. The separator recently sent me is about eight feet in diameter. I have one dust chimney now, but you could not put many separators in it; I shall have twelve separators, The waste will drop down into the room, where we bale it up.
The PRESIDENT. Will you have twelve pipes?
The PRESIDENT. I should think that would be quite an obstruction,
Mr. BOURNE. It is; but it is the best I can do.
Mr. JOHNSTON. Would you recommend dispensing with dust rooms where you already have them, and where you do not need the room for something else, and put in this arrangement?
Mr. BOURNE. I don't know as I should want to advise that to-day. The insurance men are very quiet about it.
Mr. JOHNSTON. Is there a fan connected with it?
Mr. JOHNSTON. Do you have less dust go through these connections than through the dust chimney?
Mr. KNIGHT. Mr. BOURNE's mill is about one hundred feet from my office, and my friends may have noticed some peculiar hieroglyphics in my letters, caused by little bunches of cotton dust flying about and into my ink. I expect when Mr. BOURNE gets in all his separators I shall be able to write with a plain pen without a wad of cotton dust attached to it.
Mr. ATKINSON. If theories come true in about the time they are usually supposed to, say in ten years, I will mention that some eight or ten years ago I called your attention to this cyclone dust collector, by which the chief hazard in a flour mill, which had rendered them explosive, had been removed. I have believed since then that after the first man put it into a cotton mill to take away the dust from his pickers, all the others would follow suit, - not because the insurance men recommend it, but because it would be profitable and safe.
Mr. WELLS. Soon after putting on the attachment to our pickers a picker caught fire, and the fire rolled round inside the cylinder; that was all. Mr. BARKER. Who makes these separators ?
. Mr. WELLS. The Arlington & Curtis Company of East Saginaw, Mich.
The PRESIDENT. Before introducing the last topic assigned for this session, I take occasion to say that at its close we shall adjourn to the Thorndike House, where a dinner has been provided for the members present, tiekets for which will be issued as we pass out. Before we go, Mr. ATKINSON will have some pictures from lantern slides exhibited, showing some features of the subject which he will present after din
Before the adjournment Mr. THOMPSON would like to say a few words in regard to a covering for cotton bales.
We will now take up the next topic, “ Electrical transmission of power for cotton mills,” by C. J. H. WOODBURY, Lynn, Mass.