US806450A - Domestic water-still. - Google Patents

Description

PATBNTED DBO. 5, 1905.

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lll/l V R. P. BARNSTEADl DOMESTIC WATER STILL.

APPLICATION FILED FEB. 17,1905.

UNTTD PATENT cerros.

ROBERT P. BARNSTEAD," OF BOSTON, MASSACHUSETTS.

' DOMESTIC wzirrsR-'s'TILL i To all whom it may concern: i

. Be it known that I, ROBERT P. BARNSTEAD, a citizen of the United States, and a resident of Boston, in the county of Suffolk, State of Massachusetts, have invented certain new and useful Improvements in Domestic Water- Stills, of which the following isa full, clear, and exact description.

The object of this invention is the construc- IO tion of an improved device whereby a steady supply of distilled water can be produced for use in houses, hospitals, and other places where comparatively small quantities only are desired. v

The drawing forming part of this specification is a central' vertical section of the still embodying my improvements. y

In said drawing, 1 designates the evaporating tank or boiler; 2, the gas-burner receiving 2o vits supply of gas from a pipev3; 4, the jacket surrounding and supporting the same; 5, the

ringsuppo'rting said boiler and being itself,

supported by said jacket, and 7 the cover closing said boiler, 6 being the fastening devices for locking it steam-tight upon the Rising centrally from said cover isboiler.l the 4tube 8, closed at its extremity, but formed with several lateral openings 9 just below said extremity; Rigid with both said cover andtube is the rather fiat cone l0, having a flange 14, within which is seated the lower edge ofthe cylinder 21. Secured water-tight to said` edge'is a conical or ellipsoidal shell v20, from the vertex of which rises a tube 22,

K screw-threaded at its upper end, and thereby enabled through its coaction with` the nut 23 to secure the`cover 2 4 in place upon said cyljinder. From a point Vnear the juncture of said tube 22 and shell 2O a pipe 2 7 passes out 40 through the side of said shell, descending into thev open upper end of the cup 30, acock y29 being provided for closing said pipe when desired. Within said cup,"but opening down .through its bottom, is the overiiow-pipe 32 terminally closed@ at its upper end', but pro.

From any desired source, as the pipe 26, al

suitable supply of water is delivered to the space within the cylinder 21 exterior to the shell 20, maintaining a constant level by hav- 5 55 ingl its overflow escape through the tube 27.

Specification of Letters Patent. Application lerlFebruaI-y 17,1905. Serial No. 245,993.

A tubular connection 31,

l Patented Dec. 5, 1905.

vThe interior of the shell 20 being kept cool 'by such water-supply forms `a condensing' chamber. for the steam rising from the boiler i 1 and issuing therefrom through the openings '9.r The steam thus condensed forms water,l which finds its way down into the cone 10 andl v lills the same up to the level of theoutlet 13,

through which it escapes and is caught in anyv suitable receptacle provided therefor, such distillate v'being the valuable product for ywhich the device is designed. Within said cone is deposited a suitable quantity of carbon or other substances, by means of which the con! densed water is rendered potable by its pas-y sage through the same. 'Io prevent such substances fromchoking upthe outlet 13, I provide a screen 12, which is preferably located I at the lower end of the hood 11, inclosing said outlet. As shown, the lower end of said hood is quite close to the lowest point of the cone 10, while its upper end is near the liange 14 `f thereof and is open.. The purpose in locating said hood as shown is to force the water to pass'to-the very bottom of the cone before it can escape to the outlet, and consequently to be subjected to the action of the largest possible quantity of the substance aforesaid. Byhaving the upper end of said hood open the siphonage is prevented which would other-A wise occur. Were the water siphoned out, a much smaller quantity thereof could be ac'f cumulated in the cone than is now possible,

andr hence there `would be less time for the Y water to be under the action of the said substances.- The inner end of the tube 2.7 being located close'above that part of the shell or condenser 20 whichreceives the greatest heat from the condensing steam, it is the warmest -of the water in the cylinder which overiiows through said tube and descends into the cup 30', from .which it passes by the way of the tubular connection 31 to the boiler 1. In case more water enters said cylinder from the pipe 26 and thence in the above-described manner descendsto said boilerl more rapidly than can be evaporated in the latter the excess overflows throughl the openings 33 and pipe 32. In this manner a steady supply of perfectly pure and palatable water is provided, the apparatus. maintaining its'operation without attention. r

Occasionally and the less frequentlyV in proportion to the purity ofthe waterfsupply the apparatus is taken apart for cleansing purposes. To do this, the faucet 40 is first opened IOO VIo

to drain out the water in vthe cylinder 21. Then the nut 23 is unscrewed and the cover 24 removed, thereby giving access to the interior of the cylinder. After this said cylinder is removed from within the confining flange of the cone 10 and then the locking devices 6 swung to one side to enable the cover 7 and also the attached cone 10 to be removed. This permits of said cone being cleaned and a fresh supply of carbon or other water-treating substances introduced and also enables the boiler 1 to be wiped out. This is one reason why I prefer to form said boiler with a hemispherical bottom, as if it were flat the sharp corners thereby formed would be very difficult to clean out.

To retain the carbon in place in the cone 10, I provide the screen 16, suitably apertured to slip down over the tube 8, and so rest upon the carbon and hold it down.

Another important point is to prevent the moisture which condenses upon the shell or condenser-dome 20 from flowing down said surface to the periphery of the cone 10 and thence along the surface of the latter to the lowest point in the cone, thus coming in contact with only the under layer of the carbon and being very incompletely treated. To do this, I form upon said inner surface of the dome 2O several annular flanges 20, so arranged as to divert all such moisture from said surface and cause it instead to drip directly downward from the edges of said flanges or rings to the carbon below, thus causing the water of condensation to percolate through the entire thickness of carbon and be fully treated thereby. It will be evident that by thus locating the carbon within the condensation-chamber, where the condensed moisture will reach the same almost instantly, and while still but a degree or two below the boiling-point in temperature, the water will thus receive the best possible eect from the carbon, for it is found that the hotter the water when treated the better will be the results-- the more palatable the water will be. Previous to this invention a water-treating substance has been employed in an exterior-receptacle to which the water is conducted after being distilled; but it is very difficult to produce good results even when an extra hot fire is kept up in order to have the water as hot as possible when delivered to the potable attachment. With my arrangement only enough heat is maintained to evaporate the water, and yet the condensed moisture is fed thereto with both such moisture and the earbon at the highest temperature capable of producing good results.

I have previously described this apparatus 4as receiving a steady supply of water through the pipe 26. For places where such supply cannot be had the water is poured into the cylindei1V 21 up to the level of the dotted line shown, the water being introduced either through the aperture left for the pipe 26 oiafter' the temporary removal of the' cover 21. Then the cock 29 is turned to shut oif the flow through the tube 27 and the still set in operation. After continuing until a considerable amount of the water has been evaporated from the boiler 1 and the contents of the cylinder 21 are quite hot the cock 29 is opened and said contents permitted to flow down to the cup 30 and thence to the boiler. Then said cock is closed, the cylinder 21 again filled up, and the operation continued as before.

What Iclaim as my invention, and for which I desire Letters Patent, is as follows:

1. The combination with a boiler having a removable cover, of a centrally-depressed receptacle located upon and fixed to said cover, a steam-channel through said cover to the upper part of said receptacle, means for surrounding said receptacle with water and eonverting it into a condenser, an outlet from said receptacle, and a water-treating substance located in the lower part of said receptacle.

2. The combination with a boiler and its cover, of a centrally-depressed receptacle located upon and fixed to said cover, a steamchannel through said cover to the upper part of said receptacle, means for surrounding said receptacle with water and converting it into a condenser, an outlet from said receptacle issuing from a substantial distance above the lowest point of the latter, a hood over said outlet extending above and below it and open at each end, and a water-treating substance filling said receptacle to a height less than the upper end of said hood.

8. The combination with a boiler and its cover, of an inverted cone fixed at its vertex to said cover, a tubular channel rising through said cover and apex, a hood disposed from the apex to the periphery of said cone and open at each end, a screen covering the lower end of said hood, an outlet from said cone from a point midway within said hood, and a watertreating substance filling said cone.

4. The combination with a boiler, a cover therefor and locking devices for the same, an inverted cone fixed at its vertex to said cover and having an upwardly-rising flange at its periphery, a steam-channel through said cover and apex, a cylinder fitting at its lower edge within said flange, a dome-shaped shell forining the bottom of said cylinder, a tube rising rigidly from the apex of said bottom and threaded at its upper end, a cover fitted to the top of said cylinder and constructed to be penetrated by said tube, a nut turning on said threaded end and clamping the last-named cover in place, means for lsupplying water through this cover, an overiiow-tube through said cylinder, means for conveying more or less of such overflow to said boiler, and an outlet for said cone.

5. In a still, the combination with an evapo- IIS rator, of a condensing-chamber having a dome- 1 30 shapedI ceiling 'provided' with one 'r more di- In testimony that I lclaim the foregoing inverting-rings fixed thereto,v a Water-treating Venton I have hereunto set my hand this 11th substance at the bottom of said condenser, and day of February, 1905.

an outlet through said bottom; said rings be- ROBERT P. BARNSTEAD. ing disposed to cause the moisture condensing Witnesses:

upon the said ceiling `to drip upon' said subl FRED G. TILTON,

stance. v A. B.v UPHAM.

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