US2423741A - Filtering device - Google Patents
Filtering device Download PDFInfo
- Publication number
- US2423741A US2423741A US567608A US56760844A US2423741A US 2423741 A US2423741 A US 2423741A US 567608 A US567608 A US 567608A US 56760844 A US56760844 A US 56760844A US 2423741 A US2423741 A US 2423741A
- Authority
- US
- United States
- Prior art keywords
- screen
- bars
- bends
- filtering device
- grid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001914 filtration Methods 0.000 title description 5
- 235000005336 Allium ursinum Nutrition 0.000 description 2
- 244000003363 Allium ursinum Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/31—Filter frame
Description
July 8, 1947 avvoKl-:s ET AL 2,423,741
FILTERING DEVICE Filed Dec. ll, 1944 Patented Jul-y 8, 1947 I l FILTERING DEVICE Cecil Gordon Vokes and Arthur Albert Smith, Guildford, England, assignors to Vokes Limited, Guildford, Surrey, England Application December 11, 1944, Serial No. 567,608 In Great Britain July 1, 1943 (Cl. 18S-71) 1 Claim.
A lter is often used on aircraft for filtering air passing to the engine intake and for other purposes in which a deeply crimped or pleated screen is formed of fine fibrous material, such for example as cotton or cellulose down, enclosed between layers of rather coarse textile fabric, such for example as buckram, and between outer layers of wire gauze. In other cases other soft brous material such as felt or soft textile fabric is stitched to or enclosed between layers of wire gauze.
It is found that as the surface of a screen of this nature approaches more nearly to perpendicular to the impact of sharp gritty particles travelling at very high velocity there is a tendency for the filter down cr soft material to be destroyed by the sand-blasting effect, which may even leave parts of the bends almost denuded after a period of use. The practicable size of unsupported panels of screens of this kind is in any case limited, so that it is common practice to subdivide the total area of air flow by some form of subdivided frame giving support to relatively small areas. The present invention provides means which combine the function of protecting the bends with that of helping to stifen and supy Y port the screen.
The above and other parts of the invention are embodied in a typical form which is illustrated by the accompanying drawings. The parts of the invention for which a monopoly is desired are those delimited by the claim.
In the drawings- Fig. 1 is a broken perspective View,
Fig. 2 is a fragmentary underside view to a larger scale.
As shown a slotted plate or grid with channelled bars I between the slots 2 is used to protect the angles or bends of a screen 3 of' the general kind described above. The air passes through the slots between the bars which lie along each angle in the position requiring protection. It is found that the bends at the outlet side sometimes also require protection and the preferred construction includes a similar grid with bars la on the outlet side of the screen. Protection is given to the inside of the bends by the use of suitably formed interior bars 4, so that there is a complete protection inside and outside the bends. Preferably light metal plate of relatively thin gauge will be used to form the grids and a loose bar 4 on the opposite side of each bend can if necessary be riveted through to the bar of the grid, staples 5 being shown for this purpose. A grid may be arranged with a number of sets of slots to make up a panel covering a large area from a number of strips of the pleated filtering screen, the ends of the pleats being suitably closed. Moreover, the Wire gauzek can sometimes be omitted and buckram or like supporting layers stiiened and the formation maintained by the bars.
We claim:
A filter including a slotted plate comprising parallel integrally connected channeled bars in spaced relation, as screen of deeply crimped formation having a plurality of offset oppositely disposed bends, the bends at one side of the screen underlying and nesting with said channeled bars, a second plate comprising parallel integrally formed channeled bars which are offset with respect to the first mentioned bars so as to underlie and nest with the screen bends at the opposite side of the screen, an independent bar nested with and extending the length of the inner side of each 'screen bend to form with the outer bars a supporting and Wear resisting binding for each of said screen bends, and tying elements extending through the screen and the inner and outer bars at each screen bend to maintain the bars and screen in relatively fixed relation.
CECIL GORDON VOKES. ARTHUR ALBERT SMITH.
REFERENCES CITED 'The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,203,570 Hollebone June 4, 1940 178,103 Bracker May 30, 1876 2,130,806 Link Sept. 20, 1938 1,899,007 Birkholz Feb. 28, 1933 2,130,107 Somers Sept. 13, 1938 FOREIGN PATENTS Number Country Date 468,930 Great Britain July 15, 1937
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US567608A US2423741A (en) | 1943-07-01 | 1944-12-11 | Filtering device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2423741X | 1943-07-01 | ||
US567608A US2423741A (en) | 1943-07-01 | 1944-12-11 | Filtering device |
Publications (1)
Publication Number | Publication Date |
---|---|
US2423741A true US2423741A (en) | 1947-07-08 |
Family
ID=26316255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US567608A Expired - Lifetime US2423741A (en) | 1943-07-01 | 1944-12-11 | Filtering device |
Country Status (1)
Country | Link |
---|---|
US (1) | US2423741A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502560A (en) * | 1946-10-18 | 1950-04-04 | American Air Filter Co | Electrical gas cleaner unit |
US3216578A (en) * | 1960-12-19 | 1965-11-09 | Donaldson Co Inc | Pleated filter |
US3392846A (en) * | 1964-10-01 | 1968-07-16 | American Air Filter Co | Unit filter assembly |
US3800512A (en) * | 1971-07-06 | 1974-04-02 | Arudale Mfg Inc | Flexible filter element |
US4042358A (en) * | 1976-05-14 | 1977-08-16 | Research Products Corporation | Filter media |
US6159258A (en) * | 1998-11-30 | 2000-12-12 | Dana Corporation | Air filter elements with foam pre-cleaners |
US6447566B1 (en) * | 2000-06-21 | 2002-09-10 | Freudenberg Nonwovens Limited Partnership | Air filtration system with recessed filter and edge banding |
US20030230062A1 (en) * | 2002-06-14 | 2003-12-18 | 3M Innovative Properties Company | Filter assembly |
US20030230063A1 (en) * | 2002-06-14 | 2003-12-18 | 3M Innovative Properties Company | Filter frame |
US6740137B2 (en) | 2002-06-14 | 2004-05-25 | 3M Innovative Properties Company | Collapsible pleated filter element |
US20050138905A1 (en) * | 2003-12-24 | 2005-06-30 | Kubokawa James O. | Filter assembly |
US7905974B2 (en) | 2007-07-31 | 2011-03-15 | Aaf-Mcquay Inc. | Method of making a marine gas turbine filter |
US20120324851A1 (en) * | 2011-06-21 | 2012-12-27 | Carl Freudenberg Kg | Filter element with guide shaft |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US178103A (en) * | 1876-05-30 | Improvement in ventilators for windows | ||
US1899007A (en) * | 1927-08-10 | 1933-02-28 | American Air Filter Co | Renewable filter |
GB468930A (en) * | 1935-12-28 | 1937-07-15 | Pirelli | Improvements in or relating to filters for separating aerosols from air |
US2130107A (en) * | 1936-02-06 | 1938-09-13 | Herbert J Somers | Filter |
US2130806A (en) * | 1936-01-11 | 1938-09-20 | American Laundry Mach Co | Delinting device |
US2203570A (en) * | 1937-07-15 | 1940-06-04 | Hollebone Joseph Ernest | Air cleaning or filtering device |
-
1944
- 1944-12-11 US US567608A patent/US2423741A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US178103A (en) * | 1876-05-30 | Improvement in ventilators for windows | ||
US1899007A (en) * | 1927-08-10 | 1933-02-28 | American Air Filter Co | Renewable filter |
GB468930A (en) * | 1935-12-28 | 1937-07-15 | Pirelli | Improvements in or relating to filters for separating aerosols from air |
US2130806A (en) * | 1936-01-11 | 1938-09-20 | American Laundry Mach Co | Delinting device |
US2130107A (en) * | 1936-02-06 | 1938-09-13 | Herbert J Somers | Filter |
US2203570A (en) * | 1937-07-15 | 1940-06-04 | Hollebone Joseph Ernest | Air cleaning or filtering device |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502560A (en) * | 1946-10-18 | 1950-04-04 | American Air Filter Co | Electrical gas cleaner unit |
US3216578A (en) * | 1960-12-19 | 1965-11-09 | Donaldson Co Inc | Pleated filter |
US3392846A (en) * | 1964-10-01 | 1968-07-16 | American Air Filter Co | Unit filter assembly |
US3800512A (en) * | 1971-07-06 | 1974-04-02 | Arudale Mfg Inc | Flexible filter element |
US4042358A (en) * | 1976-05-14 | 1977-08-16 | Research Products Corporation | Filter media |
US6159258A (en) * | 1998-11-30 | 2000-12-12 | Dana Corporation | Air filter elements with foam pre-cleaners |
US6447566B1 (en) * | 2000-06-21 | 2002-09-10 | Freudenberg Nonwovens Limited Partnership | Air filtration system with recessed filter and edge banding |
US20030230063A1 (en) * | 2002-06-14 | 2003-12-18 | 3M Innovative Properties Company | Filter frame |
US20030230062A1 (en) * | 2002-06-14 | 2003-12-18 | 3M Innovative Properties Company | Filter assembly |
US6740137B2 (en) | 2002-06-14 | 2004-05-25 | 3M Innovative Properties Company | Collapsible pleated filter element |
US6860916B2 (en) | 2002-06-14 | 2005-03-01 | 3M Innovative Properties Company | Filter assembly |
US6955702B2 (en) | 2002-06-14 | 2005-10-18 | 3M Innovative Properties Company | Filter frame |
US20050138905A1 (en) * | 2003-12-24 | 2005-06-30 | Kubokawa James O. | Filter assembly |
US7169202B2 (en) | 2003-12-24 | 2007-01-30 | 3M Innovative Properties Company | Filter assembly |
US7905974B2 (en) | 2007-07-31 | 2011-03-15 | Aaf-Mcquay Inc. | Method of making a marine gas turbine filter |
US20110154789A1 (en) * | 2007-07-31 | 2011-06-30 | Derek Langlands | Method of Making a Marine Gas Turbine Filter |
US8216413B2 (en) | 2007-07-31 | 2012-07-10 | AAF MC-Quay Inc. | Method of making a marine gas turbine filter |
US20120324851A1 (en) * | 2011-06-21 | 2012-12-27 | Carl Freudenberg Kg | Filter element with guide shaft |
US8747507B2 (en) * | 2011-06-21 | 2014-06-10 | Carl Freudenberg Kg | Filter element with guide shaft |
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