US656376A - Filter. - Google Patents

Description

No. 656,376. Patented Aug. 2|, |900.

J. SCHINNELLER.

FILTER.

(Application led July 24, 1899.) (No Model.) 4 Sheets-Sheet I.

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No. 656,376. Patented Aug. 2|, |900.

J. SCHINNELLEH.

F l L T E R.

(Application filed July 24, 1899.)

4 Sheets-Sheet 2.

(No Model.)

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No. 656,376. Patented Aug. 2|, |900. J. SCHINNELLER.

FILTER.

(Application led July 24, 1899.) (No Model.) 4 Sheets-Sheet 3.

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No. 656,376. Patented Aug. 2|, |900. Y

J. SCHINNELLER.

F L T E R.

(Applicashun med July 24, 189m (No Model.)

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i` 'UNITED STATES YPATENT OFFICE.

JACOB souINNnLLnR, on PTTTSBURG, PENNSYLVANIA.

FILTER.

SPECIFICATION forming part of Letters IPatent N or 656,376, dated August 21, 1900. Application filed July `2li, 1899.` serial No. 724,940. (No model.)

To all U17/1,0772, t may concern:

Be it known that I, JACOB SCHINNELLER, a resident of Pittsburg, in the-county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Filters; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to filters, its obj ect being to provide a filter which will automatically scour or cleanse the filtering-body in the operation of turning on or olf the water-supply and one in which the water-chamber is normally empty, so that danger of freezing is practically overcome,and the air will be drawn into such chamber when emptied and will act to oXidize and destroy the bacteria adhering to the outer face of the filtering-body or walls of the casing. In filters of this class a certain compact filtering stone or body has been employed which prevents the passage of bacteria, and filters have been constructed containing such stones provided with a cenfral passage through which the filtered water is drawn and with cleaning means` fitting around the cylindrical stone for scouring o-r cleaning its surfaces Without the necessity of opening the filter. The water-inlet pipe communicates with the space around the filtering-body and a water-waste pipe also connmunicates with this same space; but to clean the filter it was necessary to open this wastepipe and mechanically revolve the scouring apparatus around the stone, so as to carry off the mud and other matter collected on the surface of the filtering-bodyand then to close"w the waste-cock, the filter therefore requiring special attention at certain intervals in the day to keep it in proper condition. As these filters are used by servants and persons who are liable to neglect the same there was always liability of the cleansing of the filter in this way being overlooked. By the present invention these difficulties are entirely overcome.

The invention includes within its scope a suitable filter in which the filtering stone or body is either revoluble,the cleaner or scraper being stationary, or if the cleaneror scraper is revolved the filtering-body remains stationary, and itlinoludes, generally stated the following pai s: a tubular filteringbody, a scraperworking on the outer face of the filtering-body, either the scraper or the filtering-body being revoluble, an inlet-pipe and a waterwaste pipe, both communicating with the space around the filtering-body, valves controlling said pi pes,and connections with the revoluble member-that is, the filtering-body or the scraper-for operatin g said valves, such construction providing for the rotation of either filtering-body or valves in order to turn on the water-supply and cause the filtering of the water or to close the watersupply, in which case the waste-pipe may be opened, and as the outer face of the filteringybody is being continually cleansed the water remaining in the space around the same will then be' fiushed out and such space remain free from water until it is desired to draw a further supply of filtered Water, so that all `fear of freezing is overcome,and the air drawn in will oxidize and destroy the bacteria on' the face of the stone or on the wall of the casing, while an absolutely clean surface for the filtering of the water is always provided.

It also consists in certain other improvements in the apparatus and in the method of filtering the water, all of which will be here inafter more fully set forth and claimed.

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in Which- Figure l is a longitudinal central section of a filter embodying the invention, where the filtering-body is made revoluble, the section being taken through the inlet-pipe and filtered-water or discharge pipe. Fig. 2 is alike view of the lower part of the filter through the waste-pipe. Fig. 3 is a cross-section on the line 3 3, Fig. 1. Fig. 4 is a view of the base of the filter-case, the filtering-body and scraper being removed. Figs. 5 andl` are detailed longitudinal sections through the inlet and wast-e valves, respectively, showing the means'of operating the same. Fig. 7 is a perspective View of the valve-operating disk. Fig. 8 is a longitudinal central section of the filter, showing its construction where the scraper or cleaner rotates and the filteringbody remains stationary. Fig. 9 is a crosssection on the line 9 9, Fig. 8. Fig. 10 is `a IOO longitudinal section of another form of filter embodying the general invention. Fig.- 1l is plan of base of Fig. 10.

Like letters of reference indicate like parts in each of the several views.

The filter has the outer casing formed of the base A, shell B, and top-cover O, the base and cover being formed of castings, while the shell is formed of a section of wrought-metal tubing tting into annular packed seats, the bolts Z) passing through the base and cover and clamping the parts together. Mounted within the casing, either revoluble or stationary therein, is the filtering stone or body D, this filtering-body being generally formed of a peculiar lilteringstone well known in the art, though it may beformed of any suitable porous material being specially molded to shape. It has the central passage d, into which the filtered water passes through the body of the stone, and its outer face is cylindrical, while against the same scraper or Scrapers hear, so as to maintain such outer surface free from any filth or deposit of dirt, bacteria, &c., from the.

water Whichpasses through the filteri ng-stone. The scraper or scrapers E are either stationary or revoluble, according as to whether the filtering-stone is revoluble or held stationary.4 In the main figures `of the drawings, I have shown the filtering-body D revoluble, thescrapers E being held stationary, as that is considered the preferable form. The base A ispreferably formed as shown in the main iigures of the drawings, and whatever its construction may be it contains the waste-valve, whileit preferably contains an inlet-valve. For these reasons its construction will be more particularly set forth.

In the construction shown in Figs. l to 7 the filtering-body D is clamped between the disks f f', connected by the bar f2 and hollow or tubular extension f3 thereof, which passes upwardly through the cover C and through the stuffing-box c on said cover and carries the handle F for turning the filtering-body, As noticed in Fig. 1, a packing-ring#A5 is interposed between the lower disk f and the filtering-body and a packing-ring f6 is interposed between the upper disk f and the filteringbody, such packing preventing the flow of the water from the space b within thecasing into the central space d within the filtering-body. The upper disk f screws onto the hollow extension f3, the packing-ring f6 being confined between the disk j" and a shoulder on the tubular extension to prevent the inliow of water around the body of the tubular exten-` sion. This disk f is locked in. position by the jam-nut f8. from the spaced through the ports d into the tubular extension f3 and rises through the same, escaping through ports cl2 into the fil-l tered-water or discharge pipe t', formed as part ot' the stufiing-box Gand extending off to one side of the filter or to any `desired point. Where the handle passes upwardly through ',space b. 4h' closing u wardlv against its seat h2 and l D b The filtered water passesV the stuffing-box, it is packed, as illustrated in Fig. l, by means of the annular rubber rings t" 2, the metal washers 3 i4, and the spring i5 between said washers, so insuring a tight joint, while permitting the filtered Water to escape through the side of the stutling-box.

As it is desirable that the rotating member of the filter shall only turn in one direction, I

provide either disk f or f with a ratchet-face g, with which a pawl g', mounted in the machine, enga-ges, and so prevents backgmovement.

As above stated, the base A receives the inlet-pipe H and the waste-pipe K, both of which communicate with the outer space b around the filtering-body. Both these pipes enter from below and open upwardlyinto the Above the pipe H is the inlet-Valve having an extension which rises into the cou-rse of the disk f, which, as shown in Fig. 5, has the. cam-face h3 pressing onthe extension h4 of the valve h and forcing it down against the pressure of the incoming water, and so opening communication between the water-inlet and the space b. The cam-face h3 has an incline at its forward end to force down valve and has, preferably a like incline at its rear end to prevent jar in the closing thereof. The water-waste opening is preferably formed at about right angles tothe watersnpply opening, and it contains the downwardly-seated valve 7c', resting on the seat k2, this valve fitting in the chamber 7c3, which extends below the annular chamber a, in the base-casting into which the diskfenters. It will be noticed that the waste-valve chamber extends slightly beyond the outer edge of the annular chamber a and that the upward extension 7a4 of the valve 7c has wings 7c5 extending out and bearing on the outer face of the annular chamber d, so serving to hold the valve 7c from turning. To lift this valve and open the waste-outlet, the disk f carries the l outwardly-extendingV flange or apron Z,which extends around the same for a certain dis'- tance, being shown as extending around for almost three-fourths of the body of the disk, this apron vextending out horizontally and being adaptedto take under the valve-lip Z on the inner face of the upward extension 704 of the valve lo' and lift the said valve, holding itoft' itsseat and against the pressure ot' the water within the space b, and permit said water to waste from the chamber b around the filtering-body. It is preferred that the lip Z' shall be of the shape fairly shown in dotted lines, Fig. 6, being downwardly inclined from each end toward the center, so that when the apron strikes the disk the .inclined lip will ride up the edge of the apron until the lip passes above the apron, the valve being thus held open by means of the apron for about two-thirds of the rotation ofy the filtering-body, and mechanism for turning the same.

The Scrapers E may be mounted within the IOS IIO

filter-case in any suitable way. As they are stationary, their mounting can be made very simple. Each scraper is shown as formed of a frame having top and bottom plates c, mounted uponfthe clamping-bolts b, and having the body portions e', preferably formed of wood, extending between the said top and bottom plates and carrying on their inner faces the emery-blocks e2, which bear upon the outer cylindrical face of the filteringbody D. To give the necessary pressure for this purpose, I employ the spiral springs e3,-

wound around the clamping-bolt and having one end bearing against the shell B, while the other is connected to either top or bottom plate. The number of Scrapers may be varied, according to the size of the filter, from one to three or four.

With the construction of filter above described and which forms the subject-matter of the main figures of the drawings the op eration is practically as follows: When it is desired to draw filtered water from the filter, the operator turns the handle F, so as to open the valve h', this being accomplished by the incline h3 upon the disk f, which forces said valve downwardly against the pressure of the water-supply. When said valve is open, the water-waste valve k is of course closed. The water flows into the outer space b of the filter and passesthrough the filtering-body B into the central space d thereof, rising through the cylindrical extension f4 and passing out through the iiltered-water or discharge pipe t'. The wat-er will continue to pass in this course until it is desired to close the same, when the operator turns the crank F, drawing the cam-face h3 out of line with the supply-valve h' and permitting that valve to close, and if it is desired to flush out the filter he turns it still farther, thus causing the apron Z to lift the waste-valve lo from its seat and permit the water remaining in the space b to fiow out of the lter and into the drain. In the turning of the filtering-body within the scrapers it is of course evident that they will clean the surface of the same each time water is drawn therefrom, and when desired the Water may be also discharged through the waste-pipe and will carry off theA treme cold, and it may therefore be termed non-freezing.V Whenever the space b is flushed out as abo vefdescribed,the air entering through the discharge-pipe i to the center of the filtering-body will be drawn through the There is therefore no possi` In Figs. 8 and 9 I have shown the filter where the filtering-body is held stationary, while the scrapers are revoluble. The construction for this purpose requires but few,

changes, the same inlet or` supply valve mechanism and waste-valve mechanism in the base of the filter being employed. The changes necessary are believed to be fairly shown in Figs. 8 and 9 and will be brieiiy described. The filtering-body P is clamped between the disks p p by means of the central pipe p2, which has openings at its upper end communicating with the central space p3 within the filteringbody,and is shown as having the filtered-water discharge formed in the base-casting, the pipe p2 being secured into said casting and communicating with the passage g', leading to the discharge-pipe q. The filtering-body is thus held stationary, the upper disk p screwing onto the pipe p2 and clamping the filtering-body in place, having an upward extension p4 fitting within the spider r, carried by the shaft R, extending through the filter-cover, and having the handle R for turning thesame, the upper spider fr being thus rotated within the casing. Instead of forming the valve-operating mechanism in connection with the lower clampingdisk for the filtering-body I provide the lower spider s, fitting around a boss on the lower disk p and turning on the same, which lower spider carries the cam-plates H? and apron Z for operating the inlet and Waste valves,which have exactly the same construction as described in connection with Figsl to 7. The spiders r and shave arms r s' extending out beyond the filtering-bodyl? and connected by bolts s2 and carrying the scraperor cleaner arms frz. The scraper-arms r2 are mounted upon the bolts s2, each scraper-arm being formed of sheet metal and bent at one end to form a bearing r3, fitting around the bolt s2, while at the other end is provided a seat r4 to receive a block T5 of abrading material, which bears upon the outer face of the filteringbody. In case the arms r2 are rigidly connected to the bolts s2 by means of the portion r3 the resilience of the arms may be relied upon to hold the blocks 95 in engagement with the filtering-bod y. If the connection between the parts r3 and the bolts s2 is not rigid or if itis desired to reinforce the said arms, springs may be provided for the purpose of holding the blocks T5 against the filtering-body, as is usual in apparatus of this general character. The operation of this construction of filter is practically the same' as that above described,

differing only in the fact that the Scrapers` are rotated around the filtering-body. Where4 a supply of filtered water is desired,bymeans of the handle R' the scraper-frame is turned, so as to'open the supply-pipe, and the water will be filtered by the pressure of the Water IOO IIO

come.

inthe main until the necessary supply is obtained, when by further rotation of the scraper-frame this Valve is permitted to close and the waste-valve opened, and the water within the space around the filtering-body is permitted to flow out, carrying with it the mud or other deposit which has been re- -moved from the filtering-body by the rotation ply-chamber u', having a port u2 communieating with the valve-chamber t', and the waste-pipe 'v communicates with a chamber fu', having a port c2 communicating with the valve-chamber t. The valve thas formed therein a port at right angles, so that it may register either with the port 2 and the port u2, so as to permit Water to ow into the spacearound the filtering-body, as indicated in Figs. l0 and 1l, or to register with the port t2 and the port v2, and so provide for the Waste or outfiow from the space around said filtering-body when the water-supply is cut off. The operation is practically the same as above'described in connection with Figs. l to 7, differing only in that the operator must cause the valve to register more exactly with the supply and -Waste ports for the filtering and cleaning operations.

In all the forms illustrated in the drawings it is clear that for any filtering operation it is necessary for the filtering-body to turn within the scrapers or the Scrapers to turn around the filtering-body, and so clean its surface each time the filter is operated to draw water from the filter, and that after each filtering operation the water remaining within the space around the filtering-body may be permitted to escape, carrying off the deposit scraped from the filtering-body, so that the greatest cleanliness possible is maintained,and as the filter may be always empty except during the filtering operation the danger experienced in other filters of freezing and injuring the filter is absolutely over- The filter is also simple in construction-and comparatively cheap in cost.

What I claim as my invention, and desire to protectby Letters Patent, is-

1. In a. filter, the combination with a stationary casing, of a tubular filtering-body, a scraper working on the outer face of the tiltering-body, the scraper or ltering-body being revoluble the one with relationA to the other, an outwardly-opening inlet-valve and 3. In a filter, the combination with a sta-l tionary casing, of a tubular filtering-body, a scraper working on the outer face of the iltering-body, the scraper or filtering-body being revoluble one with relation to the other, a downwardly-openinginlet-valve in the base of the casing and a cam-face carried by the revoluble member for operating said valve.

4. In a filter, the combination with a stationary casing, of an outwardly-opening inlet-valve and a rotating member Within the casing having a cam-face adapted to push upon and open said valve.

5. In a filter, the combination with a stationary casing, having an inwardly-opening wastevalve having a laterally-proj ectin g lip, of a rotating member within the casing carrying a flange or apron adapted to engage said lip and withdraw the valve from its seat.

6. In a filter, the combination with a stationary-casing having an inwardly-opening waste-valve provided with an inclined laterally-projecting lip and a rotating member within the casing having a liange extending part Way only around same and adapted to engage the lip and withdraw the valve.

7. In a lter, the combination with a stationary casing having a base provided with an annular central recess, of, a waste-valve in said base having its valve-chamber extending partly beyond said recess, a valve in said valve-chamber having ianges bearing upon the outer wall of said recess, and a rotating member Within the casing adapted to engage with and open the valve.

8. In a filter, the combination with a stationary casing having a cover and a base and bolts connecting the same, a revoluble tubular filtering-body and a scraper mounted upon one of said bolts and bearing upon the filtering-body.

9. In a filter, the combination with a stationary casing having a cover and a base and bolts connecting the same, a revoluble filtering-body and a scraper mounted upon one of said bolts and bearing upon the filtering-body, said scraper having a frame carrying a scraping-face and a spring engaging with the frame and the outer shell of the stationary case, substantially as set forth.

10. In a lter, the combination with a stationary casing, of a revoluble tubular ltering-body clamped between disks mounted within the casing and having a hollow tubular extension passing through the top thereof, a stuing-box fitting around said tubular ex- IOO IIO

U5MAY tension and having a discharge-pipe leading from the side thereof and openings in the tubular extension communicating with the interior of the iiltering-body and with said discharge-pipe and means for turning the tubular extension.

11. In a filter, the combination with a stationary casing, of a revoluble tubular filterbular extension communicating with the interior Of the ltering-body and with said discharge-pipe and means for turning the tubular extension, said stuffing-box having packing-rings above and below the outlet and the discharge pipe and a sprin g between said packing-rings.

In testimony whereof I, the said JACOB SCHINNELLER, have hereunto set my hand.

JACOB SOHINNELLER.

Witneses:

GRACE C. RAYMOND, ROBERT C. TOTTEN.

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