US2104473A - Filter - Google Patents

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Publication number
US2104473A
US2104473A US37003A US3700335A US2104473A US 2104473 A US2104473 A US 2104473A US 37003 A US37003 A US 37003A US 3700335 A US3700335 A US 3700335A US 2104473 A US2104473 A US 2104473A
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US
United States
Prior art keywords
filter
channel
strip
locking strip
locking
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
Application number
US37003A
Inventor
Lloyd W Watson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oliver United Filters Inc
Original Assignee
Oliver United Filters Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oliver United Filters Inc filed Critical Oliver United Filters Inc
Priority to US37003A priority Critical patent/US2104473A/en
Application granted granted Critical
Publication of US2104473A publication Critical patent/US2104473A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44034—Dissociable gripping members
    • Y10T24/44043—Channel and inserted bar
    • Y10T24/4406—Resilient channel or bar

Definitions

  • This invention relates in general to filters, and particularly to a locking strip for locking the filter medium of a filter to its frame or support, such as the division strip of a rotary drum filter.
  • the object of the invention is the provision of a zig-zag or corrugated resilient metal locking strip by means of which the filter medium of the filter may be detachably secured or locked Within a channel formed in the frame of a filter or in the division strip of a rotary drum filter.
  • Figure 1 is a side elevation of a zig-zag locking strip embodying the objects of my invention.
  • Figure 2 is a side elevation of a modified form of zig-zag locking strip.
  • Figures 3a to 3e inclusive show five different cross sections in which the zig-zag strips shown in Figures 1 and 2 may be made.
  • Figure 4 is a cross section takenv through the division strip of a rotary drum filter, and showing one application of my invention.
  • Figure 5 is a partial cross section of the frame of a leaf filter showing another application of my invention.
  • the zig-zag strip shown in Figure 1 may be considered as defined by a number of consecutive oppositely pitched portions I and 2 whose junctions form protrusion or knobs 3 and 4.
  • the modified zig-zag locking strip shown in Figure 2 is formed by a number of aligned inter- -rupted straight-portions 5 joined by means of protrusions or knobs 6.
  • Either form of locking strip may be made of any desired cross-section such as, for example. illustrated in Figures 3a and 3e inclusive.
  • FIG 4 the locking strip of the form illustrated in Figure 1 is shown in conjunction with a division strip 'I such asis used on a rotary drum filter.
  • the division strip 1 is provided with an undercut or trapezoidal channel 8 within which the filter medium 9 is locked by the action of the knobs 3 and 4 of the locking strip.
  • the locking strip as shown in Figure 4 is of general (Cl. 21o-195) trapezoidal cross-section to conform to the trapezoidal channel in the division strip it has been found that other cross-sections will serve equally well.
  • the locking strip of theform illustrated in Figure 2 has been shown as applied to a circular filter leaf comprising a frame member Il provided on its inner periphery with a channel l2 for accommodating the usual drainage member and supporting screens i3 and on either side with opposed undercut channels I4 in which the filter medium I5 is locked by the action of the locking strip.
  • the interrupted straight portions 5 of the locking strip faceinwardly and form extended flat bearings which clamp the filter medium l5 against the inner walls of the channel i4. This feature is of considerable importance for it has been found that if the filter cloth is stretched too tightly over the frame the point contacts of the knobs 3, 4 and 6 have a tendency to rupture the filter medium whereasl the extended surface Contacts of the straight portions do not.
  • the locking strips shown in Figures 1 and 2 provide means whereby a filter medium may be positively and detachably secured within a channel formed in a supporting frame or member at predetermined spaced intervals and may be used in their generally straight form as shown in connection with Figure 4 or curved as shown in connection with Figure 5.
  • the locking strip is inserted into its channel by first forcing one end into the channel and then progressively forcing the remainder into position. The reverse procedure is followed in disengaging the strip.
  • a filter in a filter: a base member; formed in said base member; a section of filter medium disposed within said channel; and a zigzag locking strip resiliently engaged between the walls of said channel and said filter medium.
  • a base member having a channel therein; a fabric lining said channel and a zigzag locking strip resiliently engaged within said channel and contacting said fabric at spaced intervals.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ventilation (AREA)

Description

Jan. 4. 1938, w WATSON 2,104,473
FILTER Filed Aug. 20, 1955 FICE-.IL
FIE .[:Ijd' EIEELEIEEQ HE 5d FII- El... Q
BY www..
ATTORNEY.
Patented Jan. 4, 1938 UNITED STATES PATENT OFFICE Oliver United Filters Incorporated, San Francisco, Calif., a corporation of Nevada Application August 2,0, 1935, Serial No. 37,003
3 Claims.
This invention relates in general to filters, and particularly to a locking strip for locking the filter medium of a filter to its frame or support, such as the division strip of a rotary drum filter.
The object of the invention is the provision of a zig-zag or corrugated resilient metal locking strip by means of which the filter medium of the filter may be detachably secured or locked Within a channel formed in the frame of a filter or in the division strip of a rotary drum filter.
The invention possesses other advantageous features, some of which with the foregoing, will be set forth at length in the following description where that form of the invention which has been selected for illustration in the drawing accompanying and forming a part of the present specification is outlined in full. In said drawing, one form of the invention is shown, but it is to be understood that it is not limited to such form, since the invention as set forth in the claims may be embodied in a, plurality of forms.
Referring to the drawing:
Figure 1 is a side elevation of a zig-zag locking strip embodying the objects of my invention.
Figure 2 is a side elevation of a modified form of zig-zag locking strip.
Figures 3a to 3e inclusive show five different cross sections in which the zig-zag strips shown in Figures 1 and 2 may be made.
Figure 4 is a cross section takenv through the division strip of a rotary drum filter, and showing one application of my invention.
Figure 5 is a partial cross section of the frame of a leaf filter showing another application of my invention.
The zig-zag strip shown in Figure 1 may be considered as defined by a number of consecutive oppositely pitched portions I and 2 whose junctions form protrusion or knobs 3 and 4.
The modified zig-zag locking strip shown in Figure 2 is formed by a number of aligned inter- -rupted straight-portions 5 joined by means of protrusions or knobs 6.
Either form of locking strip may be made of any desired cross-section such as, for example. illustrated in Figures 3a and 3e inclusive.
In Figure 4 the locking strip of the form illustrated in Figure 1 is shown in conjunction with a division strip 'I such asis used on a rotary drum filter. The division strip 1 is provided with an undercut or trapezoidal channel 8 within which the filter medium 9 is locked by the action of the knobs 3 and 4 of the locking strip. Although the locking strip as shown in Figure 4 is of general (Cl. 21o-195) trapezoidal cross-section to conform to the trapezoidal channel in the division strip it has been found that other cross-sections will serve equally well.
In Figure 5, the locking strip of theform illustrated in Figure 2 has been shown as applied to a circular filter leaf comprising a frame member Il provided on its inner periphery with a channel l2 for accommodating the usual drainage member and supporting screens i3 and on either side with opposed undercut channels I4 in which the filter medium I5 is locked by the action of the locking strip. It should be particularly noted that the interrupted straight portions 5 of the locking strip faceinwardly and form extended flat bearings which clamp the filter medium l5 against the inner walls of the channel i4. This feature is of considerable importance for it has been found that if the filter cloth is stretched too tightly over the frame the point contacts of the knobs 3, 4 and 6 have a tendency to rupture the filter medium whereasl the extended surface Contacts of the straight portions do not.
The locking strips shown in Figures 1 and 2 provide means whereby a filter medium may be positively and detachably secured within a channel formed in a supporting frame or member at predetermined spaced intervals and may be used in their generally straight form as shown in connection with Figure 4 or curved as shown in connection with Figure 5.
The locking strip is inserted into its channel by first forcing one end into the channel and then progressively forcing the remainder into position. The reverse procedure is followed in disengaging the strip.
I claim:
1. In a filter: a base member; formed in said base member; a section of filter medium disposed within said channel; and a zigzag locking strip resiliently engaged between the walls of said channel and said filter medium.
2. In a filter: a base member having a channel therein; a fabric lining said channel and a zigzag locking strip resiliently engaged within said channel and contacting said fabric at spaced intervals.
3. In a filter: a base member having a channel and a resilient locking strip formed of extended interrupted flat surfaces joined by outwardly extending knobs resiliently engaged within said channel.
LLOYD W. WATSON.
a Channel
US37003A 1935-08-20 1935-08-20 Filter Expired - Lifetime US2104473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US37003A US2104473A (en) 1935-08-20 1935-08-20 Filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37003A US2104473A (en) 1935-08-20 1935-08-20 Filter

Publications (1)

Publication Number Publication Date
US2104473A true US2104473A (en) 1938-01-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US37003A Expired - Lifetime US2104473A (en) 1935-08-20 1935-08-20 Filter

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902165A (en) * 1957-03-04 1959-09-01 Multi Metal Wire Cloth Co Inc Filter leaf and method of assembling it
US3064273A (en) * 1959-08-28 1962-11-20 John P Kwake Swimming pool
US3205547A (en) * 1962-06-22 1965-09-14 Neil B Riekse Device for attaching fabric or similar material to support
US3323819A (en) * 1964-12-17 1967-06-06 Barker Leslie Clarence Structural joints
US3643803A (en) * 1970-01-19 1972-02-22 Gladys M Glos Section for disc filter apparatus
US4191361A (en) * 1978-08-30 1980-03-04 Julius Koch Usa Inc. Lockbar for fence post mounting
US4216094A (en) * 1979-03-20 1980-08-05 Envirotech Corporation Sector body for rotary disc dewatering apparatus
US4497709A (en) * 1982-09-03 1985-02-05 Albany International Corp. Two piece screen filter
US4790935A (en) * 1986-11-26 1988-12-13 Johnson Willard L Filter leaf assembly with bonded spacer and sealer
US4859332A (en) * 1986-11-26 1989-08-22 Johnson Willard L Filter leaf cleaning jet apparatus
US4894037A (en) * 1987-12-31 1990-01-16 Zenith Electronics Corporation Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
US4919805A (en) * 1986-11-26 1990-04-24 Johnson Willard L Vertical leaf filter flush
US5045199A (en) * 1988-11-08 1991-09-03 Albert Handtmann Armaturenfabrik Gmbh & Co. Kg Stacked filter supports with corresponding profile seals
US5360541A (en) * 1993-06-24 1994-11-01 Albany International Corp. Modular device for the ease of use and installation of filtration textiles
US5409606A (en) * 1993-05-04 1995-04-25 Sta-Rite Industries, Inc. Filter apparatus
US5906078A (en) * 1996-10-09 1999-05-25 Gallagher-Kaiser Corporation Retaining strip for sheet covered enclosures
US6701586B2 (en) * 2002-07-30 2004-03-09 John L. Conley, Inc. Sheet gripping assembly
US20060000177A1 (en) * 2004-06-14 2006-01-05 Salzano Claudio V Frame assembly and environmental enclosure
US20070137157A1 (en) * 2005-12-19 2007-06-21 Mann & Hummel Gmbh Filter
US20070251873A1 (en) * 2003-11-27 2007-11-01 Madison Filter 981 Ltd. Filter Cloth Retention
US20200164290A1 (en) * 2017-06-07 2020-05-28 Sabic Global Technologies B.V. Rotary vacuum filter, method, and use

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902165A (en) * 1957-03-04 1959-09-01 Multi Metal Wire Cloth Co Inc Filter leaf and method of assembling it
US3064273A (en) * 1959-08-28 1962-11-20 John P Kwake Swimming pool
US3205547A (en) * 1962-06-22 1965-09-14 Neil B Riekse Device for attaching fabric or similar material to support
US3323819A (en) * 1964-12-17 1967-06-06 Barker Leslie Clarence Structural joints
US3643803A (en) * 1970-01-19 1972-02-22 Gladys M Glos Section for disc filter apparatus
US4191361A (en) * 1978-08-30 1980-03-04 Julius Koch Usa Inc. Lockbar for fence post mounting
US4216094A (en) * 1979-03-20 1980-08-05 Envirotech Corporation Sector body for rotary disc dewatering apparatus
US4497709A (en) * 1982-09-03 1985-02-05 Albany International Corp. Two piece screen filter
US4790935A (en) * 1986-11-26 1988-12-13 Johnson Willard L Filter leaf assembly with bonded spacer and sealer
US4859332A (en) * 1986-11-26 1989-08-22 Johnson Willard L Filter leaf cleaning jet apparatus
US4919805A (en) * 1986-11-26 1990-04-24 Johnson Willard L Vertical leaf filter flush
US4894037A (en) * 1987-12-31 1990-01-16 Zenith Electronics Corporation Factory fixture frame with means for temporarily and removably supporting an in-process tension mask for a color cathode ray tube
US5045199A (en) * 1988-11-08 1991-09-03 Albert Handtmann Armaturenfabrik Gmbh & Co. Kg Stacked filter supports with corresponding profile seals
US5409606A (en) * 1993-05-04 1995-04-25 Sta-Rite Industries, Inc. Filter apparatus
US5360541A (en) * 1993-06-24 1994-11-01 Albany International Corp. Modular device for the ease of use and installation of filtration textiles
US5906078A (en) * 1996-10-09 1999-05-25 Gallagher-Kaiser Corporation Retaining strip for sheet covered enclosures
US6701586B2 (en) * 2002-07-30 2004-03-09 John L. Conley, Inc. Sheet gripping assembly
US20070251873A1 (en) * 2003-11-27 2007-11-01 Madison Filter 981 Ltd. Filter Cloth Retention
US9248389B2 (en) * 2003-11-27 2016-02-02 Madison Filter 981 Ltd. Filter cloth retention
US9616367B2 (en) 2003-11-27 2017-04-11 Madison Filter 981 Ltd. Filter cloth retention
US20060000177A1 (en) * 2004-06-14 2006-01-05 Salzano Claudio V Frame assembly and environmental enclosure
US20070137157A1 (en) * 2005-12-19 2007-06-21 Mann & Hummel Gmbh Filter
US7713324B2 (en) * 2005-12-19 2010-05-11 Mann + Hummel Gmbh Filter
US20200164290A1 (en) * 2017-06-07 2020-05-28 Sabic Global Technologies B.V. Rotary vacuum filter, method, and use

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