US1619118A - Filter - Google Patents

Description

' fers-,Irs March l 1927' H. L. GUY ET AL FIL'ER Filed ADril lO.. 1920 INVENTOR. Hcnvy' Lawns Guy 8: Thome hckbsk ATTORNEY Patented Mar. `1, 1927.

UNITED STATES PATENT OFFICE.

HENRY LEWIS GUY AND THOMAS BLACKLOCK, F MANCHESTER, ENGLAND, SIGNORS T0 WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A COB.-

PORATION 0F PENNSYLVANIA.

FILTER;

Application led April 10, 1920, Serial No. 372,922, and in Great Britain April 15, 1919.

Our invention relates to oil filters and more particularly to devices of this character used for filtering or straining oil employed in lubricating systems. n

The object of the invention is to provide a filter of the character described which 4als may be easily assembled and dismantled and which is eiicient in operation.

Another object of the invention is the provision of an improved strainer. element which is simple in construction and'may be easily and cheaply made.

In the accompanying drawings Fig. 1 is a central vertical section of an oil filter constructed in accordance with the invention,Fig. 2 being a section to an'enlarged scale taken on the line II-II of Fig. 1.

Referring to the drawings, the filter comrises a vertical chamber 1 having flanged inlets 2 and outlets 3 for the oil located respectively near the bottom and top oi' the chamber, preferably at the side thereof. The interior of the chamber l is provided near its upper end below the oil outlet with a ledge 4 adapted to support a diaphragm or plate 5 dividing the chamber into an upper and a lower portion 6 and 7. The dlaphragm or late 5 supports one or more oil strainers 8 1n position within the chamber 1 and for this purpose is provided with a corresponding number of apertures 9 through which the oil strainers 8 project. The latter are constructed somewhat in the form of a cartridge and comprise a base 10 and a head piece 11 connected by an intermediate portion of perforated metal l2 for example. On the exterior of the latter is wrapped a sheet of wire gauze 13 which forms the straining material. The edges of the wire auze 13 are preferably rein-l forced by strips of sheet metal 14, and the meeting edges form a vertical butt joint bein bent or otherwise so shaped as to be readily secured in. position bymeans of clips 16 or the like.

The clips 16 are formed of strips of metal, pressed into channel shape and apertured'to embrace the butt joint formed by the meeting edges of the metal strips 14. They are attached to one of the meeting edges-by any suitable means, such as the rivets 22, forming a pivot by which they may be moved into and out of locking engagement with the butt joint, thusv facilitating the application and removal of the wire gauze sheet 13.

The head pieces 11 of the strainers are provided with lateral orifices 17 below which is a flange 18 of somewhat greater diameter than the aperture 9 in the diaphragm or plate 5 through which the strainers 8 project. 'lhe lid or cover 19 of the lter chamber'is provided on its inner face with projections 2l which abut against the heads 11 of the strainers 8 when the cover 19 is closed, thereby holding the strainers 8 in position inthe diaphragm 5. The strainers 8 may be of any suitable. shape but are conveniently cylindrical. l

' One or more loaded non-return valves 2O are provided in .the diaphragm 5 the purpose of which is to prevent the fiow of oil through the filter from being interrupted in the event of the strainer surfaces becoming choked up.

In operation the oil enters the filter chamber 1 through the inlet 2 at itsA lower end and passes throughlthe wire gauze 13 into the interior of the strainers, flowing upwards through them and passing out through the lateral orifices 17 in their heads 11 into the portion of the filter chamber 6 above the diaphragm and thence through the outlet 3 leading from the filter chamber at its upper end.

without difiiculty: The number .of individual strainers employed will vary according to the-area of straining surface 'which has 100 to be' provided and where the latter is considerable, the number of strainers employed may, with advantage, be increased in order that the weightl of the individual strainers ma thelr being easily handled. x y

not become excessive and thus prevent lo;

While we have shown our invention in but one form, it will be obvious to those skilled in the art that it is not so limited but is susce tible of various other changes and modications lwithout departing from the spirit thereof and we desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set Sforth in the appended claims. 4 1

What we claim is:

1. A filter comprising al filter chamber, a diaphragm removably supported Within the chamber and dividing the chamber into inlet and outlet compartments, a lilter element mounted in the diaphragm through which Huid normally passes from the inlet compartment to the outlet compartment, and a relief valve carried by the diaphragm and adapted to pass liuid therethrough in parallel with said filter element upon clogging of the latter. i

2. A filter comprising a casing providing a chamber and having inlet and outlet openings communicating therewith, a removable cover for said casing, a diaphragm disposed in the chamber between the inlet and outlet openings, and filter elements and a relief valve mounted in the diaphragm, the diaphragm being held in position by including the cover and being capab moval ufplon removal of the cover.

3. A ter comprising a casing providing a chamber and having inlet and outlet opene of reings communicating therewith, an abutment in said chamber between the inlet and outlet openings, a diaphragm disposed against said abutment and dividing said chamber into inlet and outlet compartments, the diaphragm being provided with openings, filter elements removably seated in openings in the diaphragm, a relief valve carried by the diaphragm and adapted to pass uid therethrough in parallel with sald filter element upon clogging of the latter, the chamber being provided with an opening through which the diaphragm may be inserted and removed and a cover for said opening, the cover when closed abutting against the filter elements and thereby retaining the filter elements in the diaphragm and the diaphragm against the abutment.

4. In an oil lter, an elongated filter element comprising an apertured inlet ort-ion and an apertured outlet portion, tering means lcovering one of sai apertured portions, said ltering means provided with reinforced meeting edoes, and one or more clip elements pivotecf to one of said edges and having a channel-like portion adapted to t over fthe meetin edges -to hold the filtering means in position.

In testimony whereof, we have hereunto subscribed our names thisI twelfth day of March, 1920. l

HENRY LEWIS GUY. THOMAS BLACKLOCK.

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