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Publication numberUS416634 A
Publication typeGrant
Publication dateDec 3, 1889
Filing dateMay 21, 1887
Publication numberUS 416634 A, US 416634A, US-A-416634, US416634 A, US416634A
InventorsJames B. Long
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
James b
US 416634 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



(No Model.) 7

Patented Dec. 3, 1889.

Nv PETERS, Pholn-Lifihagnphur. Wuhington, D. C




SPECIFICATION forming part of Letters Patent No. 416,634, dated December 3, 1889'. Application filed May 21. 1887- Serial No. 239,009. (No model.)

To all whom it may concern:

Be it known that 1, JAMES B. LONG, of

. Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Filter-Pans; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the drawings accompanying this application.

My improvement relates to the shallow pan used at the top of the filter to receive the water and conduct it to the center, where it passes through a suitable discharge into the filter.

It also relates to that class of pans in which a small filtering-cup is used on the under side, which removes the sediment and dirt from the water before the water enters the main filter, thus preventing unnecessary fouling of the packing of the main filter. Such devices have before been known, but as ordinarily used thefiltering-cup, which is comparatively small and which removes the sediment and dirt, soon becomes foul and has frequently to be repacked, which involves considerable trouble and labor.

It is the object of my invention to obviate this diificulty by making the cup removable, and so constructing it that it can be changed end for end, sothat when it has become foul it can be inverted, and the water by running through the other way will cleanse it.

In the drawings, Figure 1 is a central vertical section ofa filter, showingthe pan in place. Fig. 2 is an enlarged vertical cross-section of the pan. Fig. 3 is a top plan view of the same. I

A indicates a filter, which may be of any desired form and construction, packed in the usual way, and provided at the bottom with the ordinary receiving-vessel, having an airpipe at the top leading to the outside of the filter and at the bottom a discharge-pipe with a faucet for drawing off the Water.

B is the filter-pan at the top, being of the usual shape.

O is the filter-cup at the center and on the under side ofthe pan, said cup being filled with packing, and the water passing through the same before it can enter the main filter.

In order to invert this cup, it is made removable from the bottom of the pan, and the construction and arrangement are as follows:

a is an open screw-seat or nozzle on the under side of the pan, into which the cup screws.

The cup 0 consists of a cylinder open at both ends, and provided at both ends with screw-threads that will screw into the nozzle a.

b b are loose perforated disks or/heads fitted into the open ends of the cylinder, and inclosing between them the packing c, which fills the body of the cup.

d is a perforated convex cap or cover permanently attached to the top of the pan and covering the opening through the nozzle,and f is a convex cap covering the bottom of the cup 0 and screwed thereon, so that when the cup is changed end for end, as before described, this cap f can also be changed from one end to the other, so as to stand on the under side of the cup at all times.

7t 71 are pieces of sponge, one inserted in the space inclosed by the caps both above and below the filter-cup.

I am aware that it is not new to invert a filter and pour the water through in the reverse'direction for the purpose of clearing it from sediment. This I do not broadly claim.

My invention consists of a filter-pan in which the cup is so arranged as to be reversible, and is capable of being attached at either end.

It also consists in the construction by which the packing is contained between two heads, and a cap is used at the bottom, fitting either end of the cup and holding-sponge.

By the means above described the packing of the cup, which becomes foul in avery short time, owing to the great amount of sediment it collects, can be kept clean, and will seldom require repacking.

I am aware that a pan havingin its bottom a downward extension or cup forming an integral part of said pan and provided with perforated plates having filtering material between them has been used, said pan being seated on a receptacle provided with a separate cover, said cover having an opening to receive the extension or cup, and such device is not of my invention.

My pan is provided with a central perforated integral cap or strainer and with a screw-threaded seat or nozzle 0,, adapted to material in the removable cylinder need cleaning the pan can be readily emptied and the cylinder reversed in position and washed before replacing the same over the main filter, the movable cap being suitably changed.

I would not be understood by the use of the word pan as limiting my claim of invention to a device embracing a pan made of sheet metal. It is obvious that a pan or water-receptacle may be made of other suitable material and of equivalent form without further invention, and also that known equivalents for screw-threaded connections can be employed, and that equivalent material can be substituted for the sponge. It is obvious that the sponge may be omitted, if desired, without sacrificing all the advantages of my improvement.

I am aware that reversible filtering-cylin ders have been used upon faucets, and such a device is not of my invention, but only the particular combination and construction hereinafter pointed out.

Having described my invention, I do not claim a reversible filter; nor do I claim such a filter provided with a cylinder open at both ends, and having a covering-cap at the bottom and perforated disks inclosing the packing.

WVhat I claim as new, and desire to secure by Letters Patent, is-

The combination of the main open-topped filter with the pan or water-receptacle con-.

stituting the sole cover of the filter and having a cap or strainer in its bottom integral therewith, a screw-threaded nozzle below said cap to receive a cylinder, and the reversible cylinder containing filtering material provided with a removable cap screw-threaded to fit either end of the cylinder, and also provided with perforated plates having filtering material between them, and sponge-strainers between the caps and perforated plates, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5652008 *Jan 5, 1996Jul 29, 1997Ultrapure Systems, Inc.Universal water filtration device and method of filtering water
Cooperative ClassificationB01D61/18, C02F1/003