US2204928A - Locking device - Google Patents

Locking device Download PDF

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Publication number
US2204928A
US2204928A US21084938A US2204928A US 2204928 A US2204928 A US 2204928A US 21084938 A US21084938 A US 21084938A US 2204928 A US2204928 A US 2204928A
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US
Grant status
Grant
Patent type
Prior art keywords
groove
tubing
section
filter
fabric
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
Inventor
Edwin S Culver
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
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284Locking by means of elastic deformation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/06Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/067Construction of the filtering drums, e.g. mounting or sealing arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/06Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/44Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44009Gripping member adapted for tool actuation or release
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/44Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44034Dissociable gripping members
    • Y10T24/44043Channel and inserted bar
    • Y10T24/44051Channel and inserted bar having operator or locking means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49863Assembling or joining with prestressing of part
    • Y10T29/4987Elastic joining of parts
    • Y10T29/49872Confining elastic part in socket
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/53657Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]

Description

June 1s, 1940. E. s. cum/ER. 2,204,928

LOCKING DEVICE Filed May 31, 1958 y INVENTOR. idw/'f7 5. 'U/z/er ATTORNEY.

Patented June 18,

PATENT oFFlc LocmNG DEvIoE Edwin S. Culver, Oakland, Calif., assigno'r to Oliver United Filters Incorporated, San Francisco, Calif., a corporation of Nevada Application May 3l, 1938, Serial o. 210,849

5 claims. (Cl. 21o-199) l'I'his invention relates in general to a lockingn device for securing a piece of fabric. to a base member, and more particularly to a locking mechanism for securing a section of filter fabric toV 5 the division strips of a rotary drum iilter.

A rotary drum filter consists essentially of a pulp or slurry tank within which is rotatably disposed a drum formed on its outer surfacewith a plurality of adjacent independent filter cells dem fined by a plurality of spaced. longitudinally extending parallel division strips. 'I'he outer surfaces ofl the filter cells so formed are coveredv with a fabricated filter medium Awhich is secured to the drum by longitudinally extending grooves formed in th division strips. In thepast, various expedients have been resorted to for holding the fabric within the groovesof the division strips, such as by caulking, by screwing a solid strip of material within the groove of the division strip 2o and over the lterfabric, or by theuse of complementary wedge-shapedmembers as shown in the UnitedStates Duvall Patent No. 2,055,251' of September 22, 1936. Each of these expedients so resorted to is objectionable for some reason or other, as for example that the caulking works loose or that the lter fabric is not held with sum-- cient tension over the filter cells.

In general, the object of this invention is the provision of locking means for holding a piece oi' .fabric within a grooved base member in suchl a.

Way that the fabric may be tightly and smoothly hield in place and yet readily removed if so des red.

More specifically, the object of my invention is the provision .of a grooved base member formed with a restrictedthroat, in combination with a fflexible rubber tubing which may be disposed within said groove and. maintained in distended position so as to lock a section of filter. fabric within the groove.

The invention possesses other advantageous features, some of which with the foregoing will be set forth at length in the following descriptionl where that form of the invention which has been selected for illustration in th drawing accom,- panying and forming a part of the-present specification is outlined in full. Insaid 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 fragmentary section of a rotary drum filter showing a grooved division strip formed with -a restricted throat.

Figure 2| shows the method of inserting a fold vof the lter medium within the grooved division stripshown in Figure l.

Figure 3 shows a method of inserting a piece of rubber tubing within a fold of the section of g filter medium disposed within the grooved divisin strip shown in Figure 1. l

Figure 1 is a fragmentary section of a rotary drum filter showing a section of filter fabric disl posed Within a grooved division strip and held in 1o place by a section of rubber tubing.

Figure 5 is a fragmentary section of a rotary drum filter showing the section of rubber tubing held in distended posi/tion by the insertion of a section of doweling. l5

The construction and operation of a continuous rotary drum filter need not here be described in` detail, for it is Well known to the trade and is fully disclosed inthe priorart such as the United States Akins Reissue Patent No. 14,214 20 oi? November 14, i916, and the United States Oliver .Patent No. 919,628 of April 27, 1909. Briefly, the essential elements of a filter of this type consists of a pulp or slurrytank within which is made to rotate a drum provided on its outer 25 surface with a plurality of longitudinally extending spaced division strips defining independent i'llter cells or compartments. y

As shown in the drawing, my invention has been embodied in a rotary drum filter of this 30 general type, comprising a drum I provided with a plurality of spaced lparallel longitudinally extending division strips 2. Each division strip is formed with a longitudinally extending groove 3 having a restricted throat l. The division 35 strips deiine independent filter cells or compartments 5 within which are disposed drainage members 6 for supporting a fabricated filter medium or cover 1 in spaced relation with respect to the drum.

As shown in Figure r2, a fold of the filter medium l is inserted into the longitudinally extending groove 3 by a wheel 8, and this having been done, a section of flexible rubber tubing 9 is forced into the groove 3 within the fold of the filter me- 45 dium. The resulting combination is shown in Figure 4 and from this ligure it is to be noted that the normal diameter .of the rubber tubing 9 lis greater than the throat 4 of the groove 3 but less than the greatest width of the groove.

' 50 l In order to lock the lter medium between the 7walls of the division strip and the section of rubbex` tubing, a section of doweling Il is then inserted within the rubber tubing as shown in msu-Te 5. 5

f medium is secured to each of the numerous divilL.; throat of saidgroove; a section'of fabric disposedin said groove between said base` member' sion strips of the drum in the same manner.

This method of locking the lter medium in place has various advantages over methods previously resorted to. En the first place, it will be noted that the rubber tubing @may be inserted within the groove 3 without moving the rubber tubing longitudinally with respect to the division strip, and therefore there is no tendency ior the lter medium to move longitudinally relative to the drum. and no tendency or it to wrinkle. Since the diameter of the rubber tubing Si is substantially less than that of the groove il, the d'oweling il may be inserted or stemmed through the rubber tubing without causing any relative motion between the rubber tubing and the division strip. The elimination of any relative motion between the rubber tubing and the division strip during the insertion oi' the doweling eliminates any corresponding relative movement between the lter medium and the division strip. Lastly. the filter medium may be readily disengaged from the drum lby first removing the doweling ii from the rubber tubing and then removing the rubber tubing from the groove 3. Although doweling has been used lfor holding the iiexible rubber tubing 8 in its distended position, obviously the same result can be eccomplished by inating the rubber tubing with air or by the insertion of'material other than doweling. i

While I have described my invention with particular reference to a continuous rotary drum filter of the tank type, it may if course be used for securing anymaterial of sheet form to any rrooved base member. s

I claim:

l. A clamp for locking fabric in place comprising: a base member: a groove in said member having a restricted throat; a section of hollow flexible tubing disposed in said groove, the normal diameter of said tubing being greater thanthe and said tubing; and means in addition to the escasas flexibility of said tubing for distending said tubing so as to lock said fabric within said groove.

2. A clamp for locking fabric in place comprising: a base member; a groove in said member having a restricted throat; a section of hollow flexible tubing disposed in said groove, the normal diameter of said tubing being greater than the throat of said groove; a section of fabric disposed in said groove between said base member and said tubing; and a solid member slidably disposed within 'said Jtubing for distending said tubing so as to'lock said fabric within said groove.

3. A clamp for locking fabric in place comprising: a base member formed with -a groove having a restricted throat; a section of hol1ow flexible tubing disposed within said groove, the normal diameter of said tubing being greater than the' restricted throat of said groove but somewhat less than the longest cross-sectional dimension of said groove; and means within said tubing for holding it in a distended position.

ll. A filter comprising: a base member formed with a groove having a restricted throat; a section of hollow exible tubing disposed within said groove, the normal diameter of said tubing being greater than the restricted throat of said groove; a section of fabric disposed in said groove between said base member and said tubing; and

means within said tubing for holding it in disf tended position so as to lock said fabric within said groove.

5. A filter comprsing: a rotary drum; a plurality of spaced division strips lsecured longitudinally of said drum and dividing said drum into a plurality of adjacent independent filter.'

cells; a longitudinally extending groove formed in one of said division strips. said groove having a restrictedthroat: a section of flexible tubing disposed within said groove, the normal diameter of said tubing being greater than said restricted throat; a section of fabric disposed in said groove between said division strip and said tubing: and means within said tubing for holding it in distended position so as to lock said fabric within said groove. l f

. EDWIN B. CULV'ER.

US2204928A 1938-05-31 1938-05-31 Locking device Expired - Lifetime US2204928A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545277A (en) * 1947-06-04 1951-03-13 Charles J Hannah Stencil screen frame
US2567266A (en) * 1947-06-04 1951-09-11 Frank W Young Filter
US2626058A (en) * 1947-06-23 1953-01-20 Davey Paxman And Company Ltd Rotary drum suction filter
US2744633A (en) * 1951-10-02 1956-05-08 Georgia Kaolin Co Filters
DE1022448B (en) * 1954-11-25 1958-01-09 Brueckenbau Flender Gmbh U-shaped profile rail provided on its leg ends flaps for holding screen elements
US2928154A (en) * 1955-04-01 1960-03-15 C E M Company Fabric covered articles
US3036354A (en) * 1960-04-29 1962-05-29 Dorr Oliver Inc Clamp
US3042206A (en) * 1959-12-15 1962-07-03 Hewitt Robins Inc Screen deck
US3315446A (en) * 1963-07-15 1967-04-25 Bahnson Co Filter cleaning apparatus
US3347389A (en) * 1965-09-09 1967-10-17 Ametek Inc Drum filter
DE1264873B (en) * 1962-05-29 1968-03-28 Dorr Oliver Inc An arrangement for fastening a flexible pad, for example. As a filter cloth, on a provided with grooves schwalbenschwanzfoermigen pad such. As a filter drum
US3431717A (en) * 1966-09-12 1969-03-11 Bahnson Co Suction flute mounted wiper device for drafting rolls
DE1475102B1 (en) * 1964-04-28 1969-09-11 Peralt Anstalt Connection between a flexible sheet and a fixed or rigid object, in particular for the protection of buildings, construction sites or Equipment against inclement weather conditions and air domes or tarpaulin or the like.
US3602970A (en) * 1969-04-14 1971-09-07 Ward Turner Machinery Co Latch bar assembly for replaceable cover
US3620469A (en) * 1969-08-01 1971-11-16 Agfa Gevaert Ag Device for attaching a flexible strip to a reel for winding thereon
US3879806A (en) * 1973-11-05 1975-04-29 Diach Products Inc Shower curtain edge retainer
US3885486A (en) * 1971-09-28 1975-05-27 Alan D Kirkpatrick Cylinder cover fastening devices
US4308143A (en) * 1979-10-29 1981-12-29 Ethyl Corporation Rotary drum filter
US4337700A (en) * 1980-05-30 1982-07-06 Pathfinder Graphic Associates, Inc. Blanket cylinder construction for printing press
US4387499A (en) * 1977-02-03 1983-06-14 Verbatim Corporation Leader to hub locking system
US4605179A (en) * 1983-09-23 1986-08-12 Kolb & Schule Ag Apparatus for winding up flat material webs
US4759087A (en) * 1987-06-08 1988-07-26 Magic American Corporation Closure device for a shower curtain
US5244572A (en) * 1991-12-06 1993-09-14 Lavalley Industries, Inc. Rotary drum filter with improved deck structure
US5307551A (en) * 1991-09-27 1994-05-03 Bratten Jack R Method of installing a filter belt on a filter housing mounted roller
US5326471A (en) * 1992-01-09 1994-07-05 Dorr-Oliver Incorporated Microstrainer filter deck panel
WO1997024170A1 (en) * 1995-12-29 1997-07-10 Scapa Group Plc Filter apparatus
US5732629A (en) * 1994-01-18 1998-03-31 Koenig & Bauer-Albert Aktiengesellschaft Arrangement for retaining a curved support
US20020148763A1 (en) * 2001-04-16 2002-10-17 Lutz Mark S. Screen cylinder and method
US6579458B2 (en) * 1998-09-14 2003-06-17 Heinrich Fiedler Gmbh & Co. Kg Screening device
US20070251873A1 (en) * 2003-11-27 2007-11-01 Madison Filter 981 Ltd. Filter Cloth Retention

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567266A (en) * 1947-06-04 1951-09-11 Frank W Young Filter
US2545277A (en) * 1947-06-04 1951-03-13 Charles J Hannah Stencil screen frame
US2626058A (en) * 1947-06-23 1953-01-20 Davey Paxman And Company Ltd Rotary drum suction filter
US2744633A (en) * 1951-10-02 1956-05-08 Georgia Kaolin Co Filters
DE1022448B (en) * 1954-11-25 1958-01-09 Brueckenbau Flender Gmbh U-shaped profile rail provided on its leg ends flaps for holding screen elements
US2928154A (en) * 1955-04-01 1960-03-15 C E M Company Fabric covered articles
US3042206A (en) * 1959-12-15 1962-07-03 Hewitt Robins Inc Screen deck
US3036354A (en) * 1960-04-29 1962-05-29 Dorr Oliver Inc Clamp
DE1264873B (en) * 1962-05-29 1968-03-28 Dorr Oliver Inc An arrangement for fastening a flexible pad, for example. As a filter cloth, on a provided with grooves schwalbenschwanzfoermigen pad such. As a filter drum
US3315446A (en) * 1963-07-15 1967-04-25 Bahnson Co Filter cleaning apparatus
DE1475102B1 (en) * 1964-04-28 1969-09-11 Peralt Anstalt Connection between a flexible sheet and a fixed or rigid object, in particular for the protection of buildings, construction sites or Equipment against inclement weather conditions and air domes or tarpaulin or the like.
DE1475102C2 (en) * 1964-04-28 1970-05-06 Connection between a flexible sheet and a fixed or rigid object, in particular for the protection of buildings, construction sites or Equipment against inclement weather conditions and air domes or tarpaulin or the like.
US3347389A (en) * 1965-09-09 1967-10-17 Ametek Inc Drum filter
US3431717A (en) * 1966-09-12 1969-03-11 Bahnson Co Suction flute mounted wiper device for drafting rolls
US3602970A (en) * 1969-04-14 1971-09-07 Ward Turner Machinery Co Latch bar assembly for replaceable cover
US3620469A (en) * 1969-08-01 1971-11-16 Agfa Gevaert Ag Device for attaching a flexible strip to a reel for winding thereon
US3885486A (en) * 1971-09-28 1975-05-27 Alan D Kirkpatrick Cylinder cover fastening devices
US3879806A (en) * 1973-11-05 1975-04-29 Diach Products Inc Shower curtain edge retainer
US4387499A (en) * 1977-02-03 1983-06-14 Verbatim Corporation Leader to hub locking system
US4308143A (en) * 1979-10-29 1981-12-29 Ethyl Corporation Rotary drum filter
US4337700A (en) * 1980-05-30 1982-07-06 Pathfinder Graphic Associates, Inc. Blanket cylinder construction for printing press
US4605179A (en) * 1983-09-23 1986-08-12 Kolb & Schule Ag Apparatus for winding up flat material webs
US4759087A (en) * 1987-06-08 1988-07-26 Magic American Corporation Closure device for a shower curtain
US5307551A (en) * 1991-09-27 1994-05-03 Bratten Jack R Method of installing a filter belt on a filter housing mounted roller
US5244572A (en) * 1991-12-06 1993-09-14 Lavalley Industries, Inc. Rotary drum filter with improved deck structure
US5326471A (en) * 1992-01-09 1994-07-05 Dorr-Oliver Incorporated Microstrainer filter deck panel
US5732629A (en) * 1994-01-18 1998-03-31 Koenig & Bauer-Albert Aktiengesellschaft Arrangement for retaining a curved support
WO1997024170A1 (en) * 1995-12-29 1997-07-10 Scapa Group Plc Filter apparatus
US6579458B2 (en) * 1998-09-14 2003-06-17 Heinrich Fiedler Gmbh & Co. Kg Screening device
US20020148763A1 (en) * 2001-04-16 2002-10-17 Lutz Mark S. Screen cylinder and method
US6915910B2 (en) 2001-04-16 2005-07-12 J&L Fiber Services, Inc. Screen cylinder and method
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

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