US429688A

US429688A - Strainer

Info

Publication number: US429688A
Authority: US
Publication date: 1890-06-10
Anticipated expiration: 1907-06-10

Description

(No Model.)

J. W. HYATT.

- STRAINER.

No. 429,688. Patented June l0, 1890.

12 VIA Y' VIA W13 552i UNITED STATES JOHN NV. HYATT, 0F NEWARK, NEM JERSEY.

STRAINER.

SPECIFICATION forming part of Letters Patent No. 429,688, dated J' une 10, 1890 Application filed October 14, 1889. Serial No. 326.980. (No model.)

zen of the United States, residing at Newark, Essex county, New Jersey, have invented certain new and useful Improvements in Strainers, fully described and represented in the following specification and the accompanying drawings, forming a part of th c K The object of this invention is to furnish a simple and effective means of removing from a fil ter-strainer the obstructions that may find entrance into the strainiiig-aperturesg and the invention consists, primarily, in a spi `al coil of wire provided with means for twisting the coils upon one another.

The invention will be understood by reference to the annexed drawings, in which Figure l is a vertical section at the center of a filter containing a granular filter-bed with one of my improved strainers in the bottom oll the same. rlhe parts hatched are in section upon the center line of the iilter, and the strainer is shown not in section, as it is located at the farther side of the center line, and it will be understood that the nearer side of the filter, which is removed, would contain one or more similar strainers, as anynumber of such strain-` ers may be inserted within the filter. lrig. l is a central longitudinal section at the points where hatched of the strainer-coil and its attachments, the view being brel/*en in the middle for want of room and the internal supporter not being in section; and Fig. 3 is a transverse section of the strainer on line a: :t in Fig. 2.

A is the filter-casing, which would be provided with a granular filter-bed of suitable depth, as to the dotted line l.

C is an inlet-pipe for impure water.

s is the coil of the strainer, secured, as by brazing or solder, at each end inside ot heads e and e', the latter being of tubular form, attached by flange f to the side of the casing A, and the interior of the head being connected with an outlet-cock G for admitting iluid to and from the interior of the strainer. The head c closes one end of the strainer, and is attached to a stein 71 extended outside the casing by a stuffing-box t', and provided at its outer end with a square shank j for turning the stem.

A supporter formed as a ribbed bar 7e is inscrted within the strainer to hold the coils in a straight line between the heads, and the coils are in practice wound with an intervening space adapted to permit the passage of the luid without permitting the escape of the granular material from the [liter-bed. ln liltering, the water is admitted by the pipe C and escapes by the cock G, passing downwar through the filter-bed and entering the interstices between the coils the strainer and escaping through the head e.

o clean the intersticesin the strainer when clogged, the stem h is oscillated at intervals by applying a wrench or handle to the end ,7 and twisting the coils of the strainer, which has the eiect of causing the several coils to slide past one another, and thus displace the obstructions temporarily lodged within the saine.

ln cleansing the filter-bed a cock D at the top of the casing is opened and a reverse current is directed through the cock G into the strainer by means lready well known in cleansing filters. Such reverse current disintegrates the filter-bed and removes the sediment from the upper portion of the same, washing it away through the waste-pipe D. 'lhe cleaning of the interstices in the strainer is performed much more effectively by twisting the coils during the reversal of the water current, as such current operates immediately to remove the obstructions when dislodged from the coils by .the twisting of the same. The coils may, however-also be twisted vfrom time to time during the filtering operation with advantage, as the movement of the coils serves to dislodge more or less of the obstructions that may gain entrance to the interstices.

The coils may be made of any desired size of wire and in any diameter, with interstices of any desired width; but l find in practice that coils wound substantially close together permit the passage of a large volume of fluid and wholly exclude the finest iiltering material. rlhe ends of the coil may be secured outside of the heads, if preferred, and fastened thereto by any species of clamp or connection, and the means of sustainin g and twisting the coil are not material, as the essential part of my invention is the combination, with the vcoil, of means for twisting one end in relation to the other, to cause a variation in the TOO interstiees between the oeils, and the of the eoils past one another to dislodge any obstructions that may he caught therein.

An internal supporter of any suitable form to permit the longitudinal passage of the iiuid to the outlet-dread may be used where the dimensions of the strainer require it; but the coils perform their straining function without regard to suoh supporter.

Any number ol strainers constructed with my improvement may be employed in iiltering in eonneotion withasuitable easingof any form, and the coil may operate as a strainer' by introducing the Unid within the same and discharging' it from the exterior in ease suoli an arrangement be desirable, as the function ol' the eoils when intereepting the impurities and in sliding; upon one another to dislodge the obstructions would lne the same in such ease as in the vonslruetion described above.

lla-vingl thus set forth my inveni ion, what I claim herein isl. ln a strainer, the combination, with a lspiral eoil ol' wire` of' a tubular connection to the interior ol' the eoil l'or the passage of fluid and means for twsting'one end of the eoil in relation to the other, substantially herein set forth.

2. In a strainer, the combination, with a spiral eoil of wire, of a fixed head secured at one end thereof, a rotary head afiixed to the other end of the coil, and a water-connection to one of the heads for the passage of finid, substantially as herein set forth.

In a strainer, the combination, with a spiral coil of Wire, of a fixed head secured at one end thereof, a rotary head affixed to the other end of the eoil, an internal supporter' forming longitudinal passages within the coil, anda water-eonnection to one of the heads for the passage of fluid, substantially as herein set forth.

i. The combination, with a filter-easing oontaining a granular Iilter-bed, of a spiral wire coil sustained Wi thin the bed, a fixed head seeured at one end of the coil, with a tubular water-oonneetion projeetimgr outside the easing, and a rotary head fixed to the other end of tlf: 7l, ith a stem projecting outside of the easingto twist the coil, as and for the purpose set ii'orth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN W. I IYAT'I. W itnesses: n

Tiros. S. CRANE, L. LEE.