US3344814A - Machine for pleating metal fabrics and the like - Google Patents

Machine for pleating metal fabrics and the like Download PDF

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Publication number
US3344814A
US3344814A US450601A US45060165A US3344814A US 3344814 A US3344814 A US 3344814A US 450601 A US450601 A US 450601A US 45060165 A US45060165 A US 45060165A US 3344814 A US3344814 A US 3344814A
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United States
Prior art keywords
plate
fabric
frame
bar
blade
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US450601A
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English (en)
Inventor
Paul F Wilber
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Dollinger Corp
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Dollinger Corp
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Priority to US450601A priority Critical patent/US3344814A/en
Priority to ES0317785A priority patent/ES317785A1/es
Priority to BE671093D priority patent/BE671093A/xx
Priority to NL6515321A priority patent/NL6515321A/xx
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Publication of US3344814A publication Critical patent/US3344814A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/18—Making special types or portions of network by methods or means specially adapted therefor of meshed work for filters or sieves

Definitions

  • This invention relates to a machine for pleating Wire fabric and the like, and more particularly to a machine for pelating wire mesh filter elements.
  • the pleated Wire mesh filter elements have been formed principally by feeding the wire mesh fabric between a pair of manually rotatable drums having undulating, intermeshing outer surfaces. As these drums are rotated, the fabric travels between their intermeshing surfaces and is pressed into a series of parallel crimps or folds.
  • Machines have also been built for pleating wire mesh filter elements; but prior known machines have been of special design and have had very limited range as to depths of pleats which could be formed.
  • An object of this invention is to provide improved apparatus for rapidly and efi'iciently pleating lengths of bendable filter material such as wire mesh or the like.
  • Another object of this invention is to provide a wire fabric pleating machine, which is readily adjustable to vary the depth of the pleats which may be formed.
  • a further object of this invention is to provide a wire' fabric pleating machine, which is rugged, easy to operate, and substantially fully automatic.
  • FIG. 1 is a plan view of a machine made in accordance with one embodiment of this invention, parts of the machine being broken away;
  • FIG. 2 is a side elevational view of this machine, also with parts broken away;
  • FIG. 3 is a fragmentary sectional view taken along line 33 in FIG. 1 and looking in the direction of the arrows;
  • FIG. 4 is a fragmentary sectional view taken along the line 44 in FIG. 3 and looking in the direction of the arrows;
  • FIG. 5 is a fragmentary front elevational view on a reduced scale of the adjusting mechanism for setting pleat length
  • FIG. 6 is an enlarged, fragmentary elevational view of this adjusting mechanism as seen when looking in the direction of the line 6-6 of FIG. 5;
  • FIG. 7 is a detail on a reduced scale of the machines pleating bar mechanism.
  • FIGS. 8, 9, 10 and 11 illustrate diagrammatically successive steps showing how the machine in operation pleats the fabric.
  • the machine illustrated herein comprises a frame having thereon a slotted, horizontally disposed top plate. Mounted above this plate to reciprocate in a vertical plane is a vertically disposed blade. Also mounted above the top plate is a vertically disposed horizontally reciprocable pusher. Mounted beneath the top plate to reciprocate horizontally with the pusher, and having on its upper surface a plurality of teeth selectively movable through the slots in the top plate is a vertically movable fabric grip ping jaw. Also mounted beneath the top plate, and reciprocable upwardly through the slots therein and into the path of the pusher as it moves toward the blade, are a plurality of laterally spaced pleat forming fingers.
  • the blade is elevated momentarily so that the upwardly folded portion of the fabric passes beneath the lower, knife-edge of the blade.
  • the blade then descends into the space between the fabric fold and theface of the pusher, and its lower edge grips and holds the fabric against the top plate adjacent the lower edge of the pusher.
  • the jaw is lowered out of gripping engagement with the bottom of the pusher and the latter is moved horizontally away from the blade and over the top of the trailing fabric for a distance equal to the overall length of a desired pleat.
  • the jaw When the pusher has reached its rearmost position, the jaw is once again raised into operative relation with the bottom of the pusher to grip the fabric at a point spaced from where it had gripped it previously, and the cycle is repeated.
  • the pleating fingers rise to push the fabric up into a fold between the blade and the pusher, and thereafter are lowered just be- 3 fore the blade is elevated to permit the newly formed pleat to pass therebeneath.
  • the pusher is reciprocated by a pair of rocker arms, each of which is connected by a tie rod and a pair of links to one end of the pusher.
  • each tie rod is adjustably secured in a radial slot formed in its associated rocker arm; and each rocker arm is mounted intermediate its ends to pivot about a stationary axis in response to one of the drive cams of the machine.
  • the adjustable ends of both of said tie rods are connected to a single, manually operable wheel which may be rotated to adjust the position of the tie rod ends in the abovementioned radial slots.
  • the wheel is rotatable in opposite directions selectively to increase or decrease the radial distance between the stationary, pivotal axis of the rocker arms, and the adjustable ends of the tie rods, thereby selectively to vary the distance the tie rods are moved in response to the angular movement of the rocker arms, and hence to vary the overall length of the pleats which will be formed by the pusher plate.
  • the frame 20 (FIGS. 1 and 2) of the machine comprises a pair of parallel, vertical sides plates 21 and 22' connected at opposite ends thereof by transverse end plates 23 and 24.
  • a horizontal cover plate 25 is secured to the tops of the side plates 21 and 22 and covers substantially the rear half of the frame.
  • a smaller horizontal cover plate 26 is secured to the tops of the frame sides 21 and 22 at thefront of the frame, and is spaced from plate 25.
  • a conventional, variable speed electric motor unit 32 (FIG. 2).
  • a drive sprocket or pulley 37 (FIG. 2).
  • Sprocket 37 is connected by a chain or belt 38 to a sprocket 39 or pulley (-FIGS. 1 and 2) fixed to a shaft 41.
  • This shaft is rotatably journaled adjacent opposite ends in aligned bearings 42 (FIG. 1) that are secured to the inside faces of the frame sides 21 and 22 above the motor unit 32.
  • the shaft 41 projects through the frame sides 21 and 22 and has secured thereto two identical, axially-spaced face cams 43, which have identical cam tracks 44 (FIG. 2) formed in their outer faces.
  • roller follower 45 (FIGS. 1 and 2), which is rotatably mounted on one arm of a two armed lever 46.
  • the two levers 46 are identical in configuration, and intermediate their ends are secured adjacent the outer faces of the frame sides 21 and 22 to opposite ends of a rocker shaft 47, which extends transversely between the frame sides 21 and 22 beneath and slightly forwardly of the cam shaft 41.
  • each lever 46 has therethrough a plurality of holes 48 (FIG. 2) and is pivotally connected by a bolt 51 to one end of a tie rod 52.
  • Bolt 51 may be removably secured selectively in any one of the holes 48.
  • tie rod 52 projects upwardly above frame 20 and is pivotally connected by a bolt 53 to a bearing sleeve 54 (FIGS. 1 to 4), which is guided by a stationary post 55 for vertical reciprocation above the forward edge of cover plate 25.
  • the posts 55 are disposed adjacent opposite sides, respectively, of the frame.
  • Each post 55 is secured in a vertical position by a vertical, hollow frame or bracket 56 having a flange 57 (FIG. 2) along its lower edge secured by bolts 58 to the outside face of the adjacent frame side 21 or 22.
  • a transverse support bar 62 (FIGS. 1, 3 and 4).
  • a bearing block 63 (FIGS. 1 and 3).
  • a rectangular hinge block 64 (FIGS. 1, 3 and 4).
  • Each block 64 has projecting from one end thereof a pin 65, which is rotatably journaled in a bore formed in the outer end of each block 63.
  • each block 64 Welded adjacent its upper edge to each block 64, and extending downwardly toward the top of the frame 20 is a generally vertically disposed blade or buffer plate 66, opposite sides of which overlap the forward edges of the spacer plates 61. Secured at one end thereof to the top of each hinge block 64, and extending rearwardly and downwardly therefrom is a rigid, inclined strap 67.
  • each strap 67 is connected by a tension spring 68 (FIG. 2) to the top of the rear cover plate 25.
  • the springs 68 tend constantly to urge the blocks 64, and hence the buffer plate 66, to an extreme counterclockwise position as shown in FIGS. 2 and 3, about the common axis of the pivot pins 65.
  • the lower edge 69 of plate 66 is beveled off as shown in FIG. 3.
  • each cam shaft 41 Secured to the cam shaft 41 adjacent opposite ends thereof, and axially spaced inward-1y from the inside faces of the frame sides 21 and 22 is a further pair of axially spaced, identical face cams 71 (FIGS. 1 and 2).
  • a cam track 72 (FIG. 2) formed in the outer face of each cam 71 is a roller follower 73, which is rotatably mounted on one arm of a bellcrank lever 74.
  • each lever 74 is rotatably journaled on a transverse shaft 75, opposite ends of which are journaled in the frame sides 21 and 22 forwardly of the shaft 47.
  • each lever 74 extends vertically upwardly from shaft 75 and has therein an elongate, radial slot 76 (FIGS. 2 and 5 Adjustably secured in each slot 76 by means of an adjustable bearing block 78 is an elongate pivot pin 77 (FIGS. 2 and 5).
  • Each pin 77 extends through a bore in the associated bearing block 78, and at its inner end has an integral, internally threaded sleeve 79 (FIGS. 1 and 5), which overlies the inner face of the associated lever 74.
  • the purpose of the sleeves 79 will be described in more detail below.
  • a tie rod 81 (FIGS. 1 and 2) is pivotally connected at one end to the outer end of each of the pins 77, and at its opposite end to a pivot pin 82 carried by one of two identical rocker arms 83 intermediate the ends of the latter.
  • Each rocker arm 83 is secured at its lower end to a transverse rocker shaft 84, opposite ends of which project through the frame sides 21 and 22 and are journaled in bearings 85 (FIG. 2) secured to the inside faces of the frame sides 21 and 22 adjacent the forward end of the frame 20.
  • the upper ends of the arms 83 are secured to a further transverse shaft 86, opposite ends of which project through large openings 87 (FIG. 2) formed in the frame sides 21 and 22 above the rocker shaft-84.
  • the shaft 86 is secured to a pair of laterally spaced and vertically disposed rocker arms 88 intermediate the ends of the latter.
  • the rocker arms 88 are fastened to opposite ends, respectively, of the rocker shaft 84 adjacent the outer faces of the frame sides 21 and 22, respectively, whereby the pivotal movement of the rocker arms 83 is transmitted by the shaft 86 to the rocker arms 88.
  • each rocker arm 88 projects above the frame 20, and is pivotally connected to one end of a link 91 (FIGS. 1 and 2).
  • each link 91 extends rearwardly of the frame and is pivotally connected to the forward end of a slide bracket 93.
  • the two slide brackets 93 are guided for horizontal reciprocation above and adjacent opposite sides 94, respectively, of the frame 20, by a pair of horizontal guide rods.
  • Each guide rod 94 is secured at its rear end to the forward face of one of the vertical brackets 56, and at its forward end to a lateral flange 95 carried by one of a pair of L-shaped brackets 96, each of which is secured to one of the forward corners of the frame sides 21 and 22, respectively, at the front of frame 20.
  • a block 102 (FIG. 1). Also secured by the bolts 101 to the inside faces of the blocks 102 are the forwardly projecting flanged ends 103 (FIGS. 1 to 3) of a vertically disposed pusher plate or bar 104. Plate 104 extends transversely across the laterally spaced straps 27 for horizontal reciprocation with the brackets 93. Secured to the lower edge of'the plate 104 for sliding movement on the straps 27, and projecting slightly forwardly from plate 104 toward the front of the frame is a gripper bar 105 (FIGS. 2 and 3).
  • a plate 111 (FIGS. 1, 2 and 3). These plates project downwardly (FIGS. 2 and 3) through the space between the frame sides 21 and 22, respectively, and the adjacent straps 27.
  • a jaw supporting arm 114 Pivotally connected at one end thereof by a pin 113 to each plate 111, and extending at its opposite end rearwardly of the frame is a jaw supporting arm 114.
  • the rear ends of the two arms 114 are secured to opposite ends of a clamping bar 115 (FIGS. 1 to 4), which extends transversely beneath the straps 27 and beneath the bar 105.
  • the upper face of the clamping bar 115 is notched out to form thereon a plurality of laterally spaced jaws or teeth 116 (FIGS. 3 and 4), which register with the spaces between the straps 27.
  • a plurality of laterally spaced jaws or teeth 116 (FIGS. 3 and 4), which register with the spaces between the straps 27.
  • Secured to the under side of the clamping bar 115 adjacent opposite ends thereof are blocks 117.
  • Rotatably mounted on aligned pins which project from the outer faces of the blocks 117 toward the inside faces of the frame sides 21 and 22, respectively, are a pair of rollers 118. These rollers 118 are adapted to roll on elongate camming members 121 (FIGS. 14) which extend in the direction of reciprocation of the slides 93.
  • Each of the two camming members 121 is pivotally connected adjacent opposite ends thereof to the upper ends of a pair of spaced, pivotal links 122 and 123 (FIGS. 24).
  • Each pair of links 122, 123 is pivotally mounted on a bearing plate 124 (FIG. 2), which is secured to the outer face of one of the frame sides 21 and 22, respectively.
  • each link 122 is secured to a pivot pin 125 (FIG. 2), which is rotatable in one of the bearing plates 124.
  • each link 123 is secured to a pivot pin 126, which is also rotatable in one of the bearing plates 124.
  • each link 123 has secured thereto a plurality of grommets 127 (FIG.
  • Each tie rod 131 is pivotally connected at one end thereof to each lever 123 between its associated pivot pin 126 and the grommets 127, and extending rearwardly of the machine above and beyond the main cam shaft 41 .
  • Each tie rod 131 is pivotally connected at its opposite end to the upper end of a rocker arm 132 (FIGS. 1 and 2).
  • rocker arm 132 At its lower end each rocker arm 132 is secured to a transverse rocker shaft 133, opposite ends of which are journaled in bearings 134 secured to the outer faces of the frame sides 21 and 22 beneath and to the rear of the cam shaft 41.
  • Shaft 133 is rocked by an arm 135, one end of which is secured to shaft 133, and the opposite end of which carries a roller follower 136, which rides on the periphery of a disk cam 138 secured to the main cam shaft 41.
  • the shaft 133 is rocked by the cam 138, the resultant rocking movement of the arms 132 is 6 transmitted by the tie rods 131 to the links 125, thereby effecting a vertical swinging movement of the camming members 121 into and out of engagement with the rollers 118.
  • a further rocker arm 141 (FIGS. 1 and 2). Pivotally connected at one end thereof by a bolt 142 to the upper end of the arm 141, and extending forwardly therefrom over the shafts 41 and 75, and beneath the cover plate 25, is a tie rod 143. At its forward end tie rod 143 is pivotally connected to the shaft 86 carried by the arms 83 and 88. Also pivotally connected at one end thereof by the pin 142 to the upper end of arm 141 is a further tie rod 144.
  • transverse bar 153 Supported adjacent ends thereof on the sleeves 151 beneath the straps 27 is a transverse bar 153, which has a plurality of laterally-spaced, upwardlyprojecting fingers or fold-forming members 154 integral therewith. Each finger 154 registers with one of the spaces between the straps 27.
  • a rigid guide rod 155 Secured to and projecting downwardly from the bottom of the bar 153 adjacent each end thereof, and slidable in a vertical bore formed in the lug 152 of each sleeve 151 is a rigid guide rod 155 (FIGS. 1 and 7).
  • a shaft 166 Rotatably mounted at opposite ends thereof in a pair of metal straps (FIGS. 1 and 2), which are welded to and project forwardly from the plates 96, is a shaft 166.
  • a shaft 166 Mounted on the shaft 166 for axial adjustment therealong are two brackets 168.
  • Each bracket 168 is secured against movement on the shaft 166 by a manually operable set screw 169, which is threaded through the lower end of each bracket 168 and into engagement with the shaft 166.
  • shaft 181 adjacent opposite ends thereof, and positioned between the frame sides are two, identical axially spaced bevel gears 183.
  • Each gear 183 meshes with one of two further, identical bevel gears '184, each of which is secured to one end of one of two shafts 185, which are journaled intermediate their ends in a pair of brackets 186 secured to the inside faces of the frame sides 21 and 22.
  • each shaft 185 is connected by a flexible, rotatable cable 187 to one end of one of two externally threaded rods 188, each of which adjacent its opposite end is theaded into one of the two sleeves 79 carried by the pins 77.
  • Each cable 187 is guided in a bracket 190 (FIGS. 1, 2 and 5) mounted on the inside face of each of the bellcrank levers 74.
  • the externally threaded rods 188 are thus made to rotate in unison upon rotation of hand wheel 182 to cause the associated sleeve 79, and hence its pin 77 and associated guide block 78, to be shifted radially in the slot 76 of the corresponding lever 74.
  • the electric motor for the unit 32 is adapted to be controlled by a conventional stop-start switch (not illustrated), by means of which the machine may be operated to inch the slide brackets 93 toward their extreme right hand positions as viewed in FIGS. 1 and 2. At this point the gripping jaws 116 are spaced beneath the bottom of the plate 104.
  • the leading edge of the fabric F which is to. be pleated, is then passed between the laterally adjustable guide bars 167, along the tops of the straps 27, and beneath the pusher bar 104 far enough so that the leading edge of the fabric will be engaged by the pleating fingers 154, when the latter are subsequently elevated as below described.
  • the motor unit 32 is energized to rotate the cam shaft 41 through the agency of the chain and sprockets 38, 37 and 39. As the shaft 41 begins to rotate, the two cams 71 oscillate the arms 74, therefore causing the tie bars 81 to pivot the two arms 83 first counterclockwise and then clockwise (FIG.
  • the cam 138 permits the rocker arm 135, the shaft 133, and the arms 132 to pivot slightly clockwise about the axis of the shaft 133 (FIG.-2) in response to the tension exerted on the lower ends of the links 123 by the springs 128. This elevates the cam bars 121 upwardly against the roller fol-,
  • the cam 160 on shaft 41 permits the spring 161 to pivot the lever 158 slightly counterclockwise as shown in FIG. 2.
  • This causes the yoke formed by the straps 156 to move the pleating bar 153 vertically so about the axis of shaft 133, and through the agency of the pin 142 causing the tiebar 144 to move the draw bar 147, and hence the guide bars 148 and the sleeves 151, from the right to the left in FIGS. 1 and 2.
  • This hozizontal movement is transmitted to the pins 155,'which project downwardly from opposite ends of the pleating bar 153, and hence to the pleating fingers 154 carried thereby.
  • the pleating fingers 154 are thus subjected to both a horizontal and vertical movement during the advancement of the bar 104. After folding the fabric upwardly against the bar 104, the fingers 154 advance with the plate 104 toward the vertically disposed blade or buffer plate 66. Just before engagement with the blade 66, the fingers 154 are once again lowered beneath the straps 27 by the cam 160, so that the leading edge or fold of fabric in front of the bar 104 is pushed by the latter against the face of the blade 66 (FIG. 10).
  • the cam 138 then causes the arm 135, the shaft 133, and the arms 132 to be pivoted slightly counterclockwise (FIG. 2) against the action of the springs 128, thereby causing the links 122 and 123 to lower the camming members 121 downwardly and out of operative relation with the roller followers 118 carried by the clamping bar 115.
  • the jaws 116 thus release the fabric relative to'the bar 104; and the cams 71 then cause the lever 74 to pivot the arms 88 clockwise (FIG. 2) about the axis of the shaft 84, thereby elfecting a withdrawal of the bar 104 from the left to the right in FIGS. 1 and 2.
  • the arms 88 cause the tie bar'143 to effect a horizontal movement. of the pleating fingers 154 from the left to the right in FIGS. 1 and 2, so that the fingers will be ready once again to advance with the bar 104, when the next pleat in the fabric is formed.
  • the bar 104 returns to its starting position remote from the blade 66, it slides over the top of the fabric, the leading end of which is then gripped beneath the blade 66. Shortly after the bar 104 commences once again to advance toward the blade 66, the jaws 116 are once again elevated by the cam 138; and the cycle of operation is once again repeated.
  • the forward or right hand end of the plate 176 is pivoted upwardly (manually) and rested upon the upper edges of the folds to hold the latter in substantially vertical positions.
  • the-vertically reciprocating blade 66 forces them rearwardly beneath the plate 176, thereby elevating the rear end of plate 176 9 until the plate rests horizontally upon the upper edges of the folds as shown by broken lines in FIG. 11.
  • the weight of the plate 176 thereby tends to pack the folds close to one another until they are forced beyond the rear end (the left end in FIGS. 1 and 2) of the plate, or until the entire length of fabric has been pleated.
  • the distance which the bar 104 travels during its movement from the right to the left in FIGS. 1 and 2 determines the depth of the pleats which will be formed in the fabric. To adjust this distance, one need only to rotate the hand wheel 182. Upon being rotated the wheel 182 will cause the externally threaded rods 188 to shift both the sleeves 79, and hence the pins 77 and the adjusting members 78, equal distances in one direction or another along the radial slots 76 in the levers 74. If, for instance, upon the rotation of the wheel 182 in one direction, the pins 77 are shifted toward the axial centerline of the shaft 75, or downwardly as illustrated in FIG. 2, the horizontal movement of the tie bars 81 to the right in FIG.
  • the wheel 182 may be turned in the opposite direction to effect a shifting of the pins 77 away from the axis of the shaft 75, thereby increasing the lateral movement of bar 104 from left to right, when the levers 74 are pivoted clockwise in FIG. 2.
  • the extent of the vertical movement of the blade 66 may also be adjusted by shifting pins 51 from one to the other of the holes 48 formed in associated levers 46.
  • the pins 51 are mounted in the openings 48 that are remote from the pivotal axis of the levers 46 (the axis of shaft 47).
  • the blade 66 is thus adjusted for its maximum vertical movement relative to the frame 20, a movement which is designed to be great enough to elevate the lower edge 69 of the blade 62 above the top of the highest pleat which is capable of being folded up between the bar 104 and the blade 66.
  • the extent of the vertical movement of the blade 66 may be decreased by shifting the pins 51 into the next adjacent openings 48 formed in the associated levers 46, thereby shifting the pivotal axis of each tie rod 52 at its lower end radially inwardly toward the axis of the shaft 47, and thereby decreasing the vertical distance each tie rod 52 is moved each time the levers 46 pivot counterclockwise (FIG. 2) about the axis of shaft 47.
  • the radial height of the folds formed between the blade 66 and the bar 104 may be adjusted by rotating handwheel 182 in one direction or the other, there is no need to utilize a cam separate from the cams 71 for effecting a horizontal shifting movement of the pleating fingers 154, nor is there any need to dismantle the cam shaft 41 to change the cams 71 thereon each time it is desired to effect a change in the radial height of the pleats that are to be formed in the fabric by the machine.
  • the openings 48 in the levers 46 permitready adjustment of the tie bars 52 so that the vertical movement of the blade 66 may be increased or decreased, depending upon the increase or decrease, respectively, effected in the pleat height through the adjustment of the handwheel 182.
  • the fabric pleats are pressed firmly between the blade 66 and the bar 104, but without transmitting any undersirable shock loads from the bar 104 to the blade 66.
  • the plate 66 prevents any undesirable jamming of the pleated fabric adjacent the center of the machine.
  • a machine for pleating metal fabric and the like comprising (a) a frame having thereon a flat surface across which successive sections of a length of a metal fabric are fed,
  • clamping means for releasably securing the trailing end of a section of metal fabric beneath said second plate, each time the said second plate is advanced toward said first plate, thereby to advance the trailing ends of successive sections of said fabric across said surface with said second plate toward said first plate,
  • said folding means comprises a plurality of spaced fingers, and reciprocable means for moving said fingers from beneath said surface upwardly through the slots in said surface during the advance of said second plate toward said first plate.
  • said clamping means comprises a jaw having a plurality of spaced teeth reciprocable from beneath said surface upwardly through the slots in said surface to grip the trailing end of a section of metal fabric against the lower edge of said second plate during the advance thereof toward said first plate.
  • a machine as defined in claim 1, wherein the firstnamed means comprises (a) at least one rocker arm pivotally mounted on said frame,
  • a machine as defined in claim 1 including (a) a member having a flat surface beneath which pleats formed in said metal fabric are adapted to pass upon being released from between said plates, and
  • (b) means mounting said member on said frame above said surface so that the weight of said member rests upon the pleats passing therebeneath.
  • a machine for pleating metal fabrics and the like comprising (a) a frame having a horizontal surface,
  • (f) means movable during the advancement of said other plate to fold said length intermediatae its ends into the space between said plates to be pressed therebetween on further advance of said other plate toward said one plate, the second-named means including (1) a pivotal rocker arm mounted on said frame,
  • a machine as defined in claim 7, including (a) means mounting said one plate for limited pivotal movement about a horizontal axis vertically spaced above said surface, (b) a spring connected to said one plate and operative constantly to urge said one plate about the lastnamed axis in a direction resiliently to squeeze the pleat formed between said plates, upon the movement of said other plate to its extreme advanced position, and resiliently to urge said one plate into engagement with said other plate upon the vertical movement of said one plate over the pleat formed beween said plates and the disposition of said one plate behind said pleat.
  • ( f) means movable between said plates to fold said section of fabric upwardly, during the advance of said other plate toward said one plate, to be pressed between said plates upon further advance of said other plate toward said one plate,
  • (h) means connecting said arms to said plates to reciprocate said plates alternately'in response to the oscillations of said arms, including (1) at least two links, each of which is pivotally connected to one of said arms to reciprocate one of said plates a distance proportional to the radial distance between the pivotal axis of said one arm and the pivotal axis of the link connected thereto, and
  • a machine as defined in claim 10 wherein the lastnamed means comprises (a) an adjustable block slidably mounted in a slot,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
US450601A 1965-04-26 1965-04-26 Machine for pleating metal fabrics and the like Expired - Lifetime US3344814A (en)

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US450601A US3344814A (en) 1965-04-26 1965-04-26 Machine for pleating metal fabrics and the like
ES0317785A ES317785A1 (es) 1965-04-26 1965-09-24 Maquina para plegar tela metalica y semejantes.
BE671093D BE671093A (pl) 1965-04-26 1965-10-19
NL6515321A NL6515321A (pl) 1965-04-26 1965-11-25

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US450601A US3344814A (en) 1965-04-26 1965-04-26 Machine for pleating metal fabrics and the like

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BE (1) BE671093A (pl)
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US3554242A (en) * 1968-04-01 1971-01-12 Western Filter Co Inc Method of forming a screen

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Publication number Priority date Publication date Assignee Title
US2854033A (en) * 1954-10-11 1958-09-30 Kool Kooshion Mfg Co Coil shaping and mashing machine
US3009510A (en) * 1958-04-25 1961-11-21 Rca Corp Apparatus and method for corrugating sheet metal strip
US3123125A (en) * 1964-03-03 Method and apparatus for feeding metal strips

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123125A (en) * 1964-03-03 Method and apparatus for feeding metal strips
US2854033A (en) * 1954-10-11 1958-09-30 Kool Kooshion Mfg Co Coil shaping and mashing machine
US3009510A (en) * 1958-04-25 1961-11-21 Rca Corp Apparatus and method for corrugating sheet metal strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554242A (en) * 1968-04-01 1971-01-12 Western Filter Co Inc Method of forming a screen

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Publication number Publication date
NL6515321A (pl) 1966-10-27
ES317785A1 (es) 1966-04-16
BE671093A (pl) 1966-04-19

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