Nov. 7, 1967 A. E. REVELL EDIA SUPPORT ARRANGEMENT FOR ROLLwTYPE FILTER APPARATUS Filed April 25, 1966 2 Sheets-Sheet l INVENTOR.
4/00 .5 2e ve'// BY A. E. REVELL Nov. 7, 1967 MEDIA SUPPORT ARRANGEMENT FOR ROLL-TYPE FILTER APPARATUS Filed April 25, 1966 2 Sheets-Sheet 2 INVENTOR.
4/00 5 fie ve// United States Patent 3,350,856 MEDIA SUPPORT ARRANGEMENT FOR ROLL- TYPE FILTER APPARATUS Alan E. Revel], Louisville, Ky., assignor to American Air Filter Company, Inc., Louisville, Ky., a corporation of Delaware Filed Apr. 25, 1966, Ser. No. 544,937 3 Claims. (Cl. 55354) ABSTRACT OF THE DISCLOSURE An improved roll support section in a filter assembly wherein support arms are pivotally mounted in said filter assembly for movement between collapsed and support position with the arms being locked in place by detent lock means when the arms are in support position.
The present invention relates to roll-type filter apparatus and more particularly to an improved filter apparatus support arrangement for a roll of filter media wound upon a mandrel having projecting spindles. The present invention constitutes a further improvement over applicants structural arrangement set forth in application Ser. No. 493,031, filed Oct. 5, 1965, and assigned to American Air Filter Company, Inc.
In accordance with the present invention, an economical, straightforward filter apparatus support arrangement is provided for supporting roll-type filter media wound upon a mandrel from a bearing arm assembly mounted on the filter apparatus which assembly can be readily collapsed for shipment and storage and can be readily erected into fast, positive lock position for operational use. In addition, the present invention provides an arrangement for locking the bearing arm assembly into erect roll supporting position and unlocking such assembly for movement into collapsed position with a minimum of operation, a minimum of parts, and a minimum of wear to those few parts utilized in the erection.
Various features of the present invention will become obvious to one skilled in the art upon reading the disclosure set forth herein.
More particularly, the present invention provides in a roll-type filter assembly an improved construction for supporting a roll of filter media upon a mandrel having projecting spindles comprising: a housing having periph eral side walls defining a fluid passage to accommodate a fluid stream flow therethrough; support bracket means mounted to the side walls of the housing; longitudinally extending bearing arm means having slot means at one end thereof into which one of the projecting spindles of a mandrel can nest and having its opposite end pivotally mounted to the support bracket means to permit the bearing arm means to be positioned in extended position normal to the side wall for roll support during fluid treating operations and to be pivoted to collapsed position against the housing for shipment and storage; and detent lock means cooperable between the support bracket means and the bearing arm means to be positively engaged in resiliently urged fashion when the bearing arm means is in extended roll support position and to be fully disengaged when the arm is in collapsed position.
It is to be understood that various changes can be made Patented Nov. 7, 1967 by one skilled in the art in'the arrangement, form and construction of the apparatus disclosed herein without departing from the scope or spirit of the present invention.
Referring to the drawings which disclose one advantageous embodiment of the present invention:
FIGURE 1 is a front elevational view of a roll-type filter apparatus incorporating the novel features of the present invention;
FIGURE 2 is a side elevational view of one side of the apparatus of FIGURE 1;
FIGURE 3 is an exploded isometric view disclosing details of the novel bearing arm arrangement for supporting a projecting spindle of a roll of filter media in the filter apparatus;
FIGURE 4 is a cross-sectional front elevation view of the bearing arm unit of FIGURE 3 in extended, locked position with the angle of slope of the end legs of the bearing arm unit in somewhat exaggerated degree for the purposes of illustration;
FIGURE 5 is a side view of the apparatus of FIGURE 4; and
FIGURE 6 is a front elevational view similar to FIG- URE 4 but showing the bearing arm unit in collapsed position.
As can be seen in FIGURES 1 and 2 of the drawing, a roll-type filter housing is disclosed having peripheral side walls 2 of right angle cross-section including an upstream and side leg and serving to define a fluid passage. Housing 1 includes roll support supply section 3, the defined fluid passage or filter section 4, and roll support take-up or rewind section 6.
Supply section 3 serves to receive and support a roll of filter medium material 7. Roll 7 can be comprised of a Web of suitable filter medium material such as fiber glass.
r This web is progressively advanced through fluid passage or filter section 4 which frames a fluid stream passage through which the fluid to be treated must flow. The contaminant loaded web 7 is then progressively advanced to rewind section 6 where it is wound onto a discharge roll 8, which ultimately can be thrown away or reconditioned. A suitable drive motor 9, known in the art and not described in detail herein, can be utilized to advance the medium progressively in the manner aforedescribed. Drive motor 9 is positioned in side wall 2 of housing 1 adjacent roll rewind section 6 and is coupled to discharge roll 8 through gear and chain drive assembly 10 in any one of a number of suitable arrangements known in the art.
To support filter media roll 7 in supply section 3 a novel bearing arrangement is utilized. Referring to FIG- URES 3 to 6 of the drawings, it can be seen that this bearing arrangement includes a support bracket member 11 which for reasons as will be seen hereafter is made from a suitable flexible metal material and which is of U-shaped contour to include base leg 12 and flexible end legs 13 and 14 which extend from the base leg in nor mal fashion to form the U-shaped configuration. As can be seen in FIGURE 3 of the drawing, the base leg 12 is mounted to the upstream leg of side wall 2 of housing 1 by means of suitable nut and bolt assembly 16, the arrangement being such that end legs 13 and 14 of support bracket 11 project outwardly in perpendicular fashion from such upstream leg. It is to be noted that each of the end legs 13 and 14 includes a pivot pin receiving aperture 17, the aperture 17 is one leg being aligned with the aperture 17 in the other. These apertures are positioned in the end legs at the extremities adjacent base leg 12. Each of the end legs further includes a raised protrusion 13 on the outer face thereof spaced from aperture 17 and adjacent the extremity of the end leg opposite the base leg 12.
Adapted to cooperate with support bracket 11 aforedescribed is bearing arm member 19. Bearing arm member 19 is of U-shaped cross-sectional contour to include end legs 21 and 22 and base leg 23. Base leg 23 is sized at one extremity to permit end legs 21 and 22 extending substantially normal therefrom to engage in overlapped relationship with end legs 13 and 14 of support bracket member 11 aforedescribed. In this connection it will be noted that not only is one extremity of base leg member 23 of bearing arm member 19 of greater breadth than the breadth of base leg 12 of U-shaped bracket 11 to permit the overlapped relationship aforedescribed but, in addition, the other extremity of base leg 23 is of lesser breadth so that end legs 21 and 22 converge at a slight angle, advantageously between and degrees, toward each other, toward the extremity of smaller breadth. The extremity of smaller breadth has extending therefrom bearing box 24 which is provided with slot 26 therein to receive a spindle end of a media roll 7. Each of the legs 21 and 22 of bearing arm 19 are provided with a pivot pin receiving aperture 27, the aperture being located with respect to base 23 of the bearing arm at the extremity of greater breadth. The apertures 27 of each leg of bearing arm member 19 are aligned with each other, and in mounting arm 19 to bracket 11, the apertures 27 are aligned with the apertures 17 in the support bracket 11 so that pivot pin member 28 can be extended therethrough and held in fastened position by some suitable means such as a cotter key (not shown) to permit the bearing arm 19 to be pivotally rotated about pin 28 to collapsed and extended position in a manner described hereinafter. It is to be noted that end legs 21, 22 are sized and dimensioned relative end legs 13 and 14 to permit such pivoting to collapse position.
It is to be further noted that in addition to apertures 27 end legs 21 and 22 of bearing arm 19 are further provided with aligned apertures 29, these apertures being so positioned on the end legs as to be engaged by protrusions 13 on the legs of support bracket 11 when hearing arm 19 is pivoted to extended roll support position. Referring to FIGURES 4 and 5 of the drawings, it can be seen that protrusions 18 fully engage in apertures 29 of the bearing arm when bearing arm 19 is in such extended position. Referring to FIGURE 6 of the drawings, it can be seen that protrusions 18 are fully out of engagement with apertures 29 when bearing arm 19 is in full collapsed position. This occurs because of sloping end legs 21, 22 which are arranged to fall in different planes than the planes which determine the overlapped end legs 13 and 14 of the support bracket, the planes determining end legs 21 and 22 intersecting the respective planes determining the legs of the support brackets at a slight angle. Accordingly, as bearing arm 19 is pivoted about pin 28 from collapsed to extended position, end legs 21, 22 which are closer together as they approach bearing support block 24 have a tendency to cam end legs 13 and 14 in the flexible support bracket 11 which they overlap in an inward manner toward each other so that when bearing arm 19 is moved to a full 90 position normal to side wall 2 of housing 1 to be in support position for receipt of a rod spindle, detents or protrusions 18 on the legs 13, 14 of flexible support bracket 11 yieldingly engage in apertures 29 on the legs 21, 22 of bearing arm 19 to hold the bearing arm 19 in spring urged detent-locked engagement. Thus, with a minimum of parts and a minimum of operation a positive, resiliently urged lock is provided to hold the bearing arm 19 in fast position when it is positioned for receipt of a spindle end of roll material 7. It will be understood that the positions of apertures 17 and 27 on their end legs, as well as protrusions 18 and apertures 29 on such legs and the angle of slant of end legs 21 and 22 can be adjusted in several different ways to obtain a desired camming effect and preselected lock position of the bearing arm 19. It further is to be understood that bearing arm assemblies such as aforedescribed can be utilized on either side of housing 1 in supply section 3 and at least on one side of housing 1 in rewind section 6.
The invention claimed is:
1. A filter assembly including a housing having spaced opposed peripheral side walls providing filter medium support sections at opposite ends thereof and defining a flow-through gas-treating section intermediate said support sections with at least one of said sections being a roll support section receiving and supporting a roll of filter material wound upon a mandrel having projecting spindles; an improved construction of said roll support section of said housing comprising: a pair of support brackets mounted to said peripheral side walls in spaced aligned relationship in said roll support section; a pair of substantially straight longitudinally extending bearing arms, each having slot means at one end thereof into which one of said projecting spindles of said mandrel nests and having its opposite end pivotally mounted to said support bracket means to permit said bearing arm to be positioned in an extended position normal to said side wall for roll support during gas treating operations and to be pivoted to a collapse position against said housing for shipment and storage; and opposed detent lock members integral with and cooperable between each of said support brackets and the bearing arm pivotally mounted thereon and automatically responsive to the relative pivotal position between said support bracket and said bearing arm and assuring that said detent lock members are positively engaged in resiliently urged fashion when said bearing arm is in extended position and fully disengaged when said bearing arm is in collapsed position.
2. The apparatus of claim 1, each of said support brackets being of U-shaped contour including a base leg fastened to said side wall and flexible end legs extending therefrom, each of said bearing arms having a U-shaped cross-sectional contour sized to have the end legs thereof in overlap relationship with the end legs of said support brackets, said detent lock members being cooperably positioned between said overlapped end legs and including an aperture and raised protrusions sized to engage in said aperture, said overlapped end legs falling in difierent planes which intersect each other at a slight angle so that said raised protrusion on one leg yieldingly engage into said aperture on an overlapping leg when said bearing arms are in extended position.
3. The apparatus of claim 2, said end legs of said support brackets extending at substantially right angles to said base legs thereof, said end legs of said support brackets including aligned pivot pin receiving apertures adjacent the base legs thereof and raised protrusions adjacent the extremities of said end legs opposite said base legs, said end legs of said bearing arms including at their pivot end aligned pivot pin receiving apertures adapted to be aligned with said pivot pin receiving apertures of said support brackets and protrusion receiving apertures adapted to receive the protrusions on said support brackets, said bearing arm base legs being sized relative the base legs of said support brackets to permit the legs of said bearing arms to overlap the legs of said support brackets; a pivot pin passing through the aligned apertures of each of said support brackets and said bearing arm cooperable therewith, said bearing arm legs sloping at an angle relative each other along the longitudinal length thereof so that said raised protrusions on said support brackets engage in full and yielding engagement with said protrusion receiving apertures on said bearing arms when said engage when said arms are in collapsed position.
(References on following page) References Cited UNITED STATES PATENTS White 308-27 Burden 308-34 Kirsch 211-96 Zink 248-276 Naugler.
Gantner 248-289 Rivers 55354 Palmer 21196 Mayer 16-171 Duncan.
Monahan 242-552 HARRY B. THORNTON, Primary Examiner. D. TALBERT, Assistant Examiner.