US1892190A - Strainer - Google Patents

Description

Dec. 27, 1932. P, s RUSSEL 1,892,190

STRAINER I Filed Feb. 25, 1928 3% GII WM 5MM M Patented Dec. 27, 1932 nirsn srrus PATENT QFFCE'.Y

FHILIP SHERMAN RUSSEL, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROIT LUBRICATOR COMPANY, GF DETROIT, MECHIGAN, A CORPORATI-N F VMClFllGrJI\T STRAENER Application led February 25, 192 Serial No. 256,833. v

My invention relates to new and useful improvements in strainers or filters, and more particularly to a strainer or filter adapted for embodiment in a liquid conducting pipe line or other conduit.

An object of my invention is toprovide a strainer having a large filtering area or surface.

Another object is to provide a strainer which will not trap air.

Still another object is to provide a .strainer which is efficient in operation and of simple construction.

The invention consists in the improved construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed.

In the accompanying drawing, to be taken as a part of this specification, I have fully and clearly illustrated a preferred embodiment of my invention, in which drawing- Figure 1 is a top plan view of my improved strainer; Y

Fig. 2 is a vertical central section on the line 2-2 of Fig. 1;

Fig. 3 is a detail plan section on the line 3-3 of Fig. 2; l

Fig. 4 is a detail section in elevation on the line 4-4 of Fig. 1, and

Fig. 5 is a detail section in elevation on the line 5-5 of Fig. 1.

Referring to the drawing by characters of reference, 1 designates generally a hollow casing having a side wall 2, preferably substantially cylindrical, and having a head or upper end wall 3 and an open lower'end 4. rlhe inside face 3a of the wall 3, preferably slopes or is inclined slightly upward from the side wall 2 toward its center, so that it is substantially concave. Depending substantially centrally from the face 3a of the wall 3, is a boss 5 having a bore 6 forming a sleeve which is internally threaded and coaxial with the longitudinal axis of casing 1. Abutting the annular end of boss 5 is a supporting plate 7 having a central aperture 7 a therethrough which is alined with bore 6. The plate 7 is preferably substantially'in the form of an inverted truncated hollow cone, the base' of which lies adjacent to but spaced from the wall 3. "inserted through aperture 7a and threaded into bore G of the sleeve or boss is one end of a post or rod support member 8 having a peripheral shoulder 9 which abuts 5.'-

tion to the side wall 2, is a foraminous ele-A ment 11 which is preferably cylindrical and a screen of fine wire mesh which extends downward substantially to the open casing end 4. The free end of the screen or element 11 has secured and sealed thereto, as at 11a, a surrounding flange 12 which overlies the end of the side wall 2 at the open end 4 of casing 1. The post 8 extendsbeyond or out of the open end 4 of casing 1, and is threaded at its free end 13. Closing the open end 4 of casing 1, is a cap member 14, which is substantially cupshaped, having an annular shoulder 15 on which the flange 12 seats, and also having a surrounding rim or iiange 1G which surrounds the free end of side wall 2. Between the end of wall'2 and the ange 12, and also between the shoulder 15 and flange 12, l preferably' place gaskets 17 and 18, respectively. Centrally through the cap member 14 is an aperture 19, through which the free end 13 of post 8 slidably passes. rlhreaded on the free end 13 of post 8 is acap nut 2() which engages the cap member 14 to tightly clamp the flange 12 between the shoulder 15 and the end of wall 2. 1n the cap-engaging end of the nut 20 is an annular recess 21 in which is a gasket 22 which abuts the cap member 14 to seal the joint between nut 2O and member 14. Through the head 28 of nut 2O is an internally threaded aperture 24 which receives a screw plug 25 having a suitable gasket 26 to engage the head 23 and prevent leakage through aperture 24. The cap member 14 may be provided with internal reinforcing ribs 27, if desired. The end 13 of post Shas an axial passage 28 therein, which opens into a passage 29 extending transversely through post 8 Within the cap member 14. At its opposite end the post 8 has an axial passage 30 which extends beyond shoulder 9 and opens into a passage 3l which extends transversely through the post 8 and which communicates at its ends with the interior of the cylindrical screen ll. Y y

External of the casing l but on the head or end wall 3 is a boss, generally designated at 32 and comprising a valve casing having a central portion 33 from which extend arm portions 34, The portion 33 has a cylindrical recess 36 serving as a valve chamber which is concentric with the casing l. Opening through the base 3'? et the recess 36 is a passage 38 communicating' with the bore 6 and post passage 30. Also in the boss 32l and opening through the base 37 are a plurality of passages 39, 40 and 4l. The passage 39 extends downward through the end Wall 3 where it opens at the highest point in the wall into the space in casing l around or external of the screen 11. The passages 40, 4l connect, respectively, with an inlet passage 42 and an outlet passage 43, which are respectively in the arm portions 34, The passages 42, 43 are threaded, as Vat 44, 45, for connection ot the strainer in a pipe line or conduit (not shown) Seated on the base 37 is a disk valve member 46 of a diameter substantially equal to the diameter of the cylindrical recess 36. In thev i upper face of the disk member 46 is adiametrical slot 47. Through the member 46 Vis anV axial aperture 48 which opens at one end into the slot 47, and at the other end communicates with the passage 38. The periphery of the disk member 46 has an arcuate recess 49L into which projects, from the base 37, a stop piny 50 secured in a socket 5l in the central boss portion 33. Through thev member 46 is. an aperture 52 adapted to register with passage` 40, and in the underside ofthe disk..

member is an arcuate slot orpassage 53 into the opposite ends of which the passages 39 and 4l, respectively, open when the passage 40 and aperture 52 are in register. Threaded into the recess 36 is a sleeve or bonnet member 54 having a surrounding iiange 55 adapted to seat on the end of portion 33 and between them may be placed a gasket 55a. The member 54 has a longitudinal bore 56 which is of enlarged diameter, as at 57. Journalled in the bore 56 is a valve stein 58 having ak surrounding flange 59 which abuts the inner end or under side of the sleeve member 54. The stem 58 projects outward beyondfthe f sleeve member 54, and at its inner end has an axial recess or socket 60. Coaxialwith the aperture 48 is a cylindrical recess (i1-1in the top of disk member46 and also in alinement with the socket 60. Positioned. between the stem 58 and member 46 is a resilient member respectively internallyv 62, preferably a spring of the coil type, having its en ds respectively seated in the recesses 60 and 6l, and held under compression therebetween whereby the spring serves to hold the fiange 59 against sleeve member 54, and to hold the disk member 46 against the recess base 37,Which serves as avalve seat. Depending from the stein 58 are operating members or fingers 63 which project into the slot 4", but' only to a portion otits depth so as to provide flow passages beneath the fingers 63, as at 64. Hthin the enlarged bore portion 57 ofsleeve member 54 is a suitable packing medium 65, which is expanded radially to prevent leakage around the stem 58 by a packing sleeve 66 Whichfsurrounds stem58, and which isforced into engagement' with the packing` medium by a packing nut.. 6T threaded on the sleeve member-` 54, asat 68.'.

The operation of the strainerisas follows: Thev strainer having been connect-ed, in a liquid line byA means of the -inlet and loutlet passages 42, 43, respectively, and the disk:4

member 46v having been rotatedzby means of stem 58 to aline passage 40 and the valve-porty or'aperture 52, which alinementis determined by the. endof arcuate. slot 49bringing up against the stop pin 50 and preventing:fur;-v

the-r counterclockwise. rotation of thev disk member 46, asis apparent from Eig; 3,' thenz liquid. in the lineA will lowfronrinlet through passage 40 and aperture 52V into chamber 36, thence into slot 47 andlbeneath lingers 63 torpost passages 30: andfSl, `thus filling the casingql. Tithin the Casin-gl the through screen element ll.. and when the casing l isy lilled will flow" liquid.- will filter through passage 39, arcuate slot and passage 41 to the outlet 43 and the line.A If 'the stem 58 is rotated clockwise ltill the opposite end of slot 49 abuts 4l; will.: be closed. Any sediment or foreign matter in the liquid will collect in? cap` mem.- ber l4,.and by removing screw:` 25 may' be drained therefrom, or4 by. removing nut 20 and screw 25 together,` the cap member 14 may be slipped olf post8 for cleaning- The strainer is particularly. adapted, among other uses, to be employed in the oil feed line of a liquid fuel burning apparatus which is provided with an'oil suction pump. Due tothe construction of thestrainer, namely, the centrallyv upward sloping wall 3, the

admissionI point Jfrom the inlet passage-30H forced out of the casingl ahead of thefoil and` will not be pocketed vin the casingl to=be released later, forv example', on: a: dropwot 'oil level or a, decrease-of hnepressure as thcpin 50, their passages 40 and depending from said wall, an upwardly andr outwardly flaring plate overlying 'the free end of said sleeve and having a central aperture ahned with said bore, means to seal said i plate to said sleeve, a strainer element secured to and sealed along the periphery oi said plate, and an outlet passage leading from the interior of said casing through said end wall.

2. A device of the character described, comprising a hollow casing having an end wall, a sleeve having a longitudinal bore and depending from said wall, plate overlying the free end of said sleeve and having an aperture alined with said bore, a support member to seal said plate to said. sleeve, said inemberhaving a transverse open-ended passage therethrough, a passage in said member opening into said bore and terminat'ng said transverse passage, a strainer element secured to and sealed along the periphery of said plate, an outlet passage leading from the interior of said casing through said end wall, and valve means carried by said end wall to close said outlet passage.

3. A device of the character described, comprising a hollow casing having'a concave end wall, a sleeve having a longitudinal bore and depending from said wall, an upwardly and outwardly flaring plate overlying the free end of said sleeve and having an aperture alined with said bore, means to seal said plate to said sleeve, a strainer element secured to and sealed along the periphery of said plate, and an outlet passage leading from the interior of said casing through the highest point oi said end wall whereby said casing will not trap air.

4. A device of the character described, comprising a hollow casing having an end wall, said end wall having a valve chamber and an inlet passage and an outlet passage, each oi said passages opening into said casing and into said chamber, said outlet passage terminating at an opening upward from the inside face of said wall whereby to prevent trapping ot' air in the casing said chamber having an inlet and an outlet, valve means in said chamber adapted to close said inlet, and a strainer element in said casing interposed between said inlet passage and said outlet passage.

5. A device of the character described, comprising a hollow casing having an end wall, said end wall having a valve chamber and an inlet passage and an outlet passage, each of said passages being formed in said end wall and opening into said casing and into said chamber, said outlet passage terminating at an opening upward from the inside face of said wall whereby to prevent trapping oic air in the casing said chamber hav- A ing an inlet and an outlet, valve means in said chamber adapted to close said inlet and said outlet simultaneously, said valve means having an aperture therethrough registerable with said inlet for flow into-said chamber and a strainer element in said casing interposed between said inlet passage and said outlet passage.

6. A device of the character described,

comprising a hollow casing having an end wall, a boss on said wall external to said casing, said boss having a substantially cylindrical recess, an inlet passage opening from said recess through said end wall into said casing, an outlet passage opening from said casing through said end wall into said recess, an inlet to said recess and an outlet from said recess, a movable valve member in said recess, said member having an aperture therethrough alined with said inlet passage, a second aperture through said member adapted to aline with said inlet to permit communication between said inletV and said aperture, said valve member having a passage therein adapted to permit communication betweenV said outlet passage and said outlet when said second aperture and said inlet are in register,`

means to move said valve member to place said inlet and said second aperture into and out oi registry, and a strainer element within said casing` interposed between said inlet passage and said outlet passage. Y

7. A device of the character described, comprising a hollow casing having a substantially cylindrical side wall and having a substantially concave end wall and an open end. a boss depending centrally from said wall and having a longitudinal bore, a .support member secured in said bore, an upwardly and. outwardly flaring plate clamped between saidmember and said boss, a substantially cylindrical screen secured and sealed at one end to the periphery of said plate and depending to t ie open end of said casing, a lateral surrounding flange on the free end of said screen overlying the end of said side wall, a cap member closing said open casing` end and engaging saidfiange, means carried by said support member and acting on said cap member to clamp said flange between said sidewall and said cap member, an inlet passage opening into said cylindrical screen through said boss and said plate, and an outlet passage opening from said casing external of said screen and through said end wall.

8. A device of the character described,

comprising a hollow casing having a substan-Y tially cylindrical side wall and having a substantially concave end wall and an open end, a boss depending centrally from said wall iso andhaving a longitudinal bore, a support member secured in said bore, an upwardly and outwardly llaring plate clamped between saidmember and said boss. a substantially cylindrical screen secured and sealed at one end to the periphery of said plate and de pending to the open end of said casing, a lateral surrounding lange on the free end of said screen overlying the end of said side wal-l, a cap member closing said open casing end and engaging said flange, means carried b`y said support member and acting on said cap member to clamp said llange between said side wal-l and said cap member, an inlet passage opening into said cylindrical screen through said boss and said plate, an outlet passage opening from said casing external ol'` said screen and through said end wall, a valve chamber communicating with said inlet and said outlet passages, a valve in said chamber adapt-ed to open and close one of said passages, and means engaging said valve whereby said valve may be operated.

9.- A device of the character described. comprising a hollow casing having an end wall and an open end, a plate member, a strainer-element secured and sealed to the periphery of said member and depending therefrom in laterally spaced relation to said casing and substantially to the open end of said casing, a supporting member clamping said plate member to said end wall, a cap member closing the open end of said casing and securing and sealing the free end of said element toY said casing, means engaging said supporting member to secure said cap member to said casing, said casing having an inlet passage and an outlet passage, one of said passages opening within said element, and the other of said passages opening between said element and said casing.

10.` A device of the character described, comprising a hollow casing having a strainer element therein, said casing having a valve chamber and passages opening from said chamber into said casing on opposite sides of said element, said casing having an inlet to said chamber and an outlet from said chamber, a valvev member in said chamber having an aperture therethrough in constant communication with one of said passages, said valve member having a second aperture movable into and out of registry with said inlet, said valve member having a passage operable to permit communication between said outlet and the other of said passages, and means to operate said valve member.

l1.. A device of the character described, comprising a hollow casing having a Y strainer element therein, said casing having a valve chamber and passages opening from said chamber into said casing on opposite sides of said element, a bonnet closing said chamber, a rotatable disk valve member in said chamber to control said passages, a valve stem journaled inl said bonnet and having means engaging said valve member to rotate said valve member, a flange on said stem engaging the Linder side of said bonnet, and spring means abutting said stem and said valve membei` to seat said valve member and hold said flange in engagement with said bonnet.

12. A device of the character described, comprising a hollow casing having an end wall with a recess therein having abottom wall, said end wall having an inletl and an PHILIP SHERMAN RUSSEL.

CERTIFICATE 0I" CQRRECTION.

Patent No. ,892,90. December 27, 1932.

PHILIP SHERMAN RUSSEL.

it hereby certified that error appears in rle printed specification 0f the above rmmbere patent reqiring eorreeen as oovv's: Page 3, lines 53 and 68, claims 4 and 5, respeeively, for "an" read "an"; and lines 5S and 70, claims 4 and 5, resgseevey, aire? "easing" insert a "c0mma"; and tha the said Letters Peient simul ce read Wih these eerrecens herein mat the same may cenform to record ef rile ease in the Peteur Qfice.

Signed @mi Sealed his 28th day @f February, A. D. 1933.

4M. J. Moore, (Sea) Acting Commissioner of Patents.

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