US3593990A - Method and apparatus for supporting sheet material - Google Patents

Method and apparatus for supporting sheet material Download PDF

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Publication number
US3593990A
US3593990A US743387A US3593990DA US3593990A US 3593990 A US3593990 A US 3593990A US 743387 A US743387 A US 743387A US 3593990D A US3593990D A US 3593990DA US 3593990 A US3593990 A US 3593990A
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United States
Prior art keywords
article
jets
gas
orifices
materials
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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
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US743387A
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English (en)
Inventor
Emile Plumat
Robert Van Laethem
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.)
AGC Glass Europe SA
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Glaverbel Belgium SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
    • B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
    • B65G49/063—Transporting devices for sheet glass
    • B65G49/064—Transporting devices for sheet glass in a horizontal position
    • B65G49/065—Transporting devices for sheet glass in a horizontal position supported partially or completely on fluid cushions, e.g. a gas cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
    • B65G51/02—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases
    • B65G51/03—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases over a flat surface or in troughs
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
    • C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
    • C03B35/182—Construction of the conveyor rollers ; Materials, coatings or coverings thereof specially adapted for bent sheets or ribbons
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
    • C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
    • C03B35/188—Rollers specially adapted for supplying a gas, e.g. porous or foraminous rollers with internal air supply

Definitions

  • the orifices may be in the walls of cylinders which are then rotated so that the moving jets displace the sheet horizontally. Orifices may also be provided in the upper reach of a belt which passes over slots in a gas discharge chamber which is connected to a source of gas under pressure. Both a method and apparatus are disclosed.
  • the present invention relates to materials handling, more particularly, to a method and apparatus for conveying sheet material with a minimum of surface contact.
  • the objects of the present invention are attained and the disadvantages of the prior art are overcome by the present invention which discloses an apparatus and method for conveying articles in the form of sheets when the article is supported by a cushion of gas.
  • the method disclosed herein essentially comprises directing a plurality of jets of gas upwardly against an article to support the article.
  • the jets are then moved in directions having horizontal components so that the article is displaced in a horizontal plane while supported by the cushion of gas formed by the jets.
  • the jets may be moved in directions having arcuate paths so that they approach and depart from the article or the jets may be moved unidirectionally in a horizontal plane.
  • the jets may either completely or partially support the article.
  • freely rotatable rollers are also used to at least contact the article to provide some degree of support.
  • the gas jets will tend to displace the article in that direction.
  • the present invention therefore provides for an article to be both supported and conveyed by the gas jets.
  • the direction and rate of advance of the article can be varied by changing the direction of movement of some or all ofthe jets.
  • the apparatus essentially comprises gas discharge means which are movably mounted beneath the article to be conveyed with there being a plurality of orifices therein.
  • the gas discharge means is connected to a gas supply means which in turn is connected to a source of gas under pressure. This gas is discharged upwardly against the article to be conveyed to define a plurality ofjets which in turn form a gas cushion to support the article. At least some of the orifices are directed upwardly at any one time to discharge jets of gas against the article.
  • the gas discharge means is movable in such a manner that the orifices are moved in directions having horizontal components. As a result, the corresponding movement of the jets discharged from the orifices will displace the article in a horizontal plane.
  • the gas discharge means may be in the form of a plurality of spaced parallel cylindrical members having the orifices in their cylindrical walls.
  • the orifices may be helically arranged around the axis of each cylindrical member. The cylindrical members are rotated so that the jets of gas approach and recede from the article. The jets will then both support and convey the article.
  • Another form of gas discharge means comprises a stationary chamber having a plurality of parallel slots in the upper surface thereof.
  • a belt having a plurality of orifices moves over the slotted surface and in close proximity thereto.
  • the moving belt will cause the jets of gas to move horizontally.
  • One reach of the apertured belt may form an actual wall of the stationary chamber.
  • FIG. I is a top plan view of one embodiment of the articleconveying apparatus according to the present invention.
  • FIG. 2 is a sectional view taken along the line 11-11 in FIG.
  • FIG. 3 is a view similar to that of FIG. 1 but showing a modification of the article-conveying apparatus
  • FIG. 4 is a sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is a sectional view taken along the line V-V in FIG. 3;
  • FIG. 6 is a longitudinal sectional view of a portion of another modification of the present invention and is taken along the line VI-Vl in FIG. 7;
  • FIG. 7 is a transverse sectional view of a further modification of the apparatus and is taken along the line VII-VII in FIG. 6;
  • FIG. 8 is a partial sectional view similar to that of FIG. 6 and showing still another modification of the present invention.
  • FIG. 9 is a sectional view similar to that of FIGS. 6 and 8 and showing an additional modification of the present invention.
  • FIG. 10 is an elevational view of a portion of one of the rollers employed in the modification of FIG. 9;
  • FIG. 11 is a view similar to that of FIG. l0but showing another modification of the roller
  • FIG. 12 is an end elevational view of a portion of the apparatus according to the present invention modified for handling curved sheet material
  • FIG. 13 is a bottom plan view of the rollers of the apparatus shown in FIG. 12;
  • FIG. 14 is a top plan view of the rollers of the apparatus shown in FIG. 12.
  • one embodiment of the invention comprises a gas discharge or distributing chamber 1 fixedly disposed between two rotatable cylindrical drums 2 upon which is positioned an endless belt 3.
  • the belt is movable so that the upper reach thereof moves in the direction of the arrow indicated at 4.
  • Horizontal transporting rollers 5 and 6 are positioned upstream and downstream of the belt. The tops of the rollers 5 and 6 and the upper reach of belt 3 lie in substantially the same horizontal plane.
  • the upper surface of the chamber 1 is provided with a series of parallel longitudinally extending slots 7.-The distributing chamber 1 is connected to a gas supply reservoir through conduits 8a and 8b having control valves 90 and 9b therein respectively.
  • the supply reservoir 10 is in turn connected to a source of gas under pressure, which is not illustrated, through a supply line having a control valve 11 therein.
  • the belt 3 is provided with a plurality of slots 12 arranged over the entire surface area of the belt as may be seen in FIG. 1.
  • the slots are arranged in rows running longitudinally of the belt so that the slots in each row will pass above and cooperate with a corresponding slot 7 in the top wall of distributing chamber 1.
  • the upper reach of the belt 3 is in close proximity and may even contact the slotted wall of the distributing chamber 1 as shown in FIG. 2.
  • valves 9a and 9b are first opened so'as to'admit a pressurized gas into the distributing chamber 1.
  • the pressurized gas may be compressed air but it is apparent that any other suitable gas may be employed, depending upon the nature of the material to be conveyed.
  • one of the drums 2 is drivingly connected through reduction gearing or the like to a source of power and driven to cause the belt to travel over chamber 1 in the direction of arrow 4.
  • a sheet of glass indicated at 13 is placed on the transporting roller 5 which raises the sheet above the top reach of the belt.
  • the pressure of the gas in chamber 1 is maintained at such a level that the jets of gas discharged upwardly from the orifices 14 formed by the intersection of chamber slots 12 and belt slots 7 support the sheet 13 a short distance above the belt as shown in FIG. 2.
  • the orifices 14 will move continuously in the direction of the arrow 4 so that the gas cushion formed by the jets of 'gas impinging on the underside of sheet 13 similarly moves in the direction of the arrow 4 todisplace the sheet 13 in this direction.
  • the speed at which the supported glass sheet is conveyed can either be increased or decreased or the sheet may be stopped at any location along the path of movement as defined by the belt.
  • the apparatus comprises an endless belt 15 mounted on cylindrical drums 17 within a distributing chamber 16.
  • the drums 17 have curved generatrices similar in shape to the transverse curvature of the top wall of the chamber 16.
  • the beltflS is also supported by a series of small auxiliary rollers 18, one series of which is illustrated in H0. 5, so that the top reach of the belt 15 moves in close proximity to the top wall of chamber 16.
  • the chamber 16 contains a pressurized gas which is discharged upwardly in the form of a plurality ofjets through orifices l9 defined by the intersection of transverse slots 20 in the belt 15 with longitudinal slots 21 in the top wall of distributing chamber 16.
  • transporting rollers 23 and 24 having generatrices curved to conform to those of the drums 17.
  • the transporting rollers are positioned upstream and downstream of chamber 16 with respect to the intended direction of movement of an article as indicated by the arrow 4.
  • the transporting rollers carry curved glass sheets 22 onto and from the gas cushion upon which the sheets are supported and conveyed over the chamber 16.
  • the gas discharge means comprises a series of hollow cylinders 26 rotatably mounted between horizontally extending members 27 supported on vertical uprights 28.'The peripheral walls of cylinders 26 are provided with perforations 29. The ends of the cylinders 26 are indicated at 30a and 30b with these ends communicating with gas supply chambers 31a and 31b respectively through end apertures 32a and 32b.
  • the cylinder ends 300 and 30b are provided with external flanges 33a and 33b and fluidtight seals are formed between these external flanges and the gas supply chambers 31a and 31b.
  • the reservoir 36 is provided with a supply line having a control valve 37 therein and is filled with pressurized gas at a given temperature which may be ambient'temperature.
  • the pipes 34a and 34b are connected through secondary pipes 38a and 38b having control valves 39a and 39b to a second gas storage reservoir 40 having a supply control valve 41.
  • the second reservoir 40 is filled with gas under pressure but maintained at a temperature different from that of the gas in storage reservoir 36.
  • the spaces between cylinders 26 are partially occupied by freely rotatable rollers 25 which assist in supporting the sheet 43 and guide it as it is advanced by the jets of gas.
  • the upward forces exerted by the gas jets can be adjusted to such a value that the contact pressure between the sheet 43 and rollers 25 is very little.
  • the rollers 25 could be omitted and the sheet supported completely by the gas cushion. It is to be noted that continuous evacuation of gas from spaced points underneath the article is facilitated when a gas discharge structure in the form of perforated cylinders is employed.
  • FIGS. 6 and 7 hollow cylinders 26 which are drivingly connected to a source of power are rotated in the direction as indicated by the arrow 42-or in the clockwise direction as 'viewed in FIG. 6. This rotation of cylinders 26 will displace the sheet of glass 43 inthe direction indicated by the arrow 44. Valves 35a, 35b and 39a, 39b are opened to admit gases at predetermined pressures and temperatures into the cylinders 26. The gas is then discharged from the cylinders 26 through the orifices 29 in the form of jets.
  • the sheet of glass is then introduced at the upstream end of the apparatus and advanced therethrough in the direction of arrow 44 by the horizontal components of the forces exerted on the sheet by the jets of gas which are discharged continuously from the orifices 29 in the rotating cylinders26.
  • the orifices will move cyclically along arcuatc paths which approach and recede from sheet 43. After the gas from thcjets has impinged against the underside of sheet 43 it escapes away from undemeath the sheet from between successive cylinders.
  • the driving effect of the gas jets against sheet.,43 can be modified by inclining the orifices 29 with respect to the radii of the respective cylinders 26. As illustrated in FIG. 6, the axes of the orifices 29 extend radially within the cylinders. Vanes or baffles 109 may be positioned as illustrated in FIG. 6 to deflect the jets on one side of one or more of the cylinders. It is also possible to mask or block the orifices on one side by providing screens 110 also illustrated in FIG. 6.
  • the sheet43 can be positively guided against any lateral displacement by providing an edge guide at one or both lateral faces .of the sheet.
  • a guide may comprise a freely rotatable roller or a belt rotation about a vertical axis or. axes.
  • the sheet 43 is retained against lateral displacement by the tops of the horizontal members 27 which project slightly above the plane of the bottom surface of the sheet 43.
  • the speed at which'sheet43 is advanced through, the apparatus can be varied by changing the speed of rotation of the cylinders and/or theoutput and pressure of the gas.
  • the article may be conveyed solely by thejets of gas.
  • the article may be supported completely by the gas jets impinging thereon and then conveyed by rollers, belts or the like engaging the sides of the article along the required path of movement.
  • a very light contacting pressureagainst the sides or edges of the article is sufficient to convey the article when supported by gas.
  • the pressure exerted against the article 43 by the rollers 25 can be reduced by the use of gas jets supporting partially the article so that the article is not damaged or marred in any way article tobe overcome, such as in accelerating, braking .or
  • FIG. 8 there is illustrated a portion of an apparatus according to the present inventionhaving lower and upper series of rotatingcylinders 45a and 45b respectively.
  • These cylinders are similar to the cylinders 26 employed in the modification illustrated in FIGS. 6 and 7.
  • A. sheet 46. is consheet in the direction 47 and at the same time exert a downward force against the sheet soas to prevent any lifting of the article if the velocity of gas discharge is increased in order to accelerate the advance of the article.
  • the output and pressure of the gas from the rotating cylinders can be regulated independently for the two series of cylinders.
  • a sheet 60 which may be of glass, rests upon rotatable cylinders 61, 62, 63 each of which is provided with peripheral orifices 64.
  • the interior of the cylinder indicated at 65 is filled with gas under pressure and the cylinder is rapidly rotated in the direction indicated by the arrow 66.
  • the jets of gas discharged through each orifice have a tangential velocity component so that the gas is discharged from the cylinder in a direction 67 which is not radial to the cylinder but tangential to an imaginary smaller coaxial cylinder indicated at 68.
  • the jet of gas discharged from an orifice does not extend along a straight path 67 but curves rcarwardly from the: orifice in a direction opposed to the rotation of the cylinder.
  • each jet striking the sheet 60 exerts thereon both a vertical force and, because of friction, a horizontal force. If the cumulative vertical forces exerted by the gas jets are greater than the weight of the sheet, the sheet lifts from the cylinders to be supported by a cushion of gas and is advanced under the action of the horizontal forces exerted by the jets of gas. If the vertical forces are insufficient to raise the sheet, the sheet remains in contact with the cylinders and advances by the combined action of the rotating cylinders and the gas jets. The sheet is only partially supported by the cylinders since some upward force sill be exerted by the rotating jets.
  • FIGS. 10 and 11 there are illustrated particularly advantageous arrangements of orifices in a cylinder where the orifices are arranged in one or more helical series around the cylinder axis.
  • the orifices located at successive positions along the length of the cylinder can sweep narrow paths which may be located very close together or even overlap without adjacent orifices being so close together that the mechanical strength of the roller is unduly weakened.
  • the helices are of a small pitch with the axial distance between successive turns being about 10 mm.
  • the perforations 71 are so arranged that the plane 73 of the circular path of a perforation of one helix lies between the planes 74 and 75 of the circular paths of two successive perforations of another helix.
  • the planes 76 and 77 of orifices in the two lower of the three helices which are partially indicated in FIG. ll are located between the planes 78 and 79 of the paths of two successive orifices in the top helix indicated at 72.
  • the gaps 80 between the planes 76, 77, 78 and 79 can also be divided by the planes of the paths of orifices in the other helices whichdo not appear in FIG. 11
  • the helical arrangement of orifices on the cylinders also contributes to the uniformity of supporting pressure exerted by the gas cushion without positioning the orifices too close to each other on the surface of the cylinder..
  • the relative angular setting of the cylinders about their axes prefferably be such that if the supported article is held stationary the surface areas of the article which are struck by jets from successive cylinders having the same plane of circular movement will not overlap.
  • FIGS. 12-14 is particularly adapted for handling curved sheet material.
  • This apparatus essentially comprises a series of lower barrel-shaped perforated cylinders and a series of upper rollers having a conforming configuration.
  • the drawings illustrate an assembly of rollers at only one position along the length of the apparatus and it is to ,responding with that of the generatrices of the cylinders 101.
  • the lateral edges of the sheets are indicated by the broken lines 103 in FIG. 13.
  • the upper rollers 104 have concave profiles complementary to the convex profiles of the lower cylinders.
  • the upper rollers 104 can be freely rotatable or driven so as to assist in the guidance of sheets 102.
  • the upper rollers 104 may also be replaced by perforated cylinders so that the sheets 102 are supported between cushions of gas in a manner similar to that described for the structure shown in FIG. 8.
  • a roller 69 rotatable on a vertical shaft 70 contacts the lateral edges of sheets 102 to positively guide the sheets through the apparatus.
  • Auxiliary rollers 105 can be mounted between the spaced end portions of the rollers to provide a more continuous support of the sheets.
  • the rollers similarly may be perforated cylinders if so desired.
  • auxiliary top rollers 107 can be mounted between the spaced central portions of the upper rollers 104 with the rollers 107 being rotatable in suspended bearing mounts 108.
  • perforated cylinders may be used having their axes of rotation on the arc of a circle surrounding the cylindrical article and parallel to the axis of the cylindrical article so that the cylinders partially surround the article.
  • the perforated cylinders may all be rotated in the same direction wherein the jets of gas will rotate the supported article about its axis or the cylinders may be rotated in different directions.
  • the cylindrical article may be also displaced axially, as described above which would be parallel with the perforated cylinders, while the cylindrical article is supported entirely or partially by the jets of gas.
  • the present invention has disclosed a simple but effective apparatus and method for the supporting and conveying of articles, particularly in sheet form, with little or no physical contact.
  • the present invention is particularly adapted to the handling of glass other materials in sheet and other forms may be readily handled by the method and process disclosed herein.
  • a method of conveying an article the steps of discharging a plurality ofjets of gas from a gas supplied under pressure, successively directing the jets upwardly towards a surface of an article so that the jets impinge against the surface to support at least partially the article, moving the jets ofgas impinging on the article surface in directions having horizontal components, the jets moving along a continuous curved path as they approach and then immediately go away from the article surface.
  • a materials-handling apparatus for conveying an article, the combination of gas discharge means movably mounted beneath an article to be conveyed and having a plurality of orifices therein, means connected to said gas discharge means for supplying said gas discharge means with gas under pressure to be discharged through the orifices to define a plurality of jets, a portion of said orifices being directed upwardly at any one time so that the jets of gas discharged therefrom will at least partially support the article, said gas discharge means being movable to move said orifices in directions having horizontal components and each orifice proceeding along a continuous curved path as the gas discharge means approaches and goes awayfrom the article, said gas discharge means comprising at least one rotatably mounted cylindrical member with circumferentially arranged orifices in the peripheral wall thereof.
  • each orifice acts along a portion of the article surface having a width greater than the distance between two adjacent paths of the orifices, two orifices proceeding along adjacent paths being so arranged that at a given time the orifices each act upon a zone of the article surface with the zones being spaced from each other in the direction of the orifice paths.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)
  • Treatment Of Fiber Materials (AREA)
US743387A 1967-07-12 1968-07-09 Method and apparatus for supporting sheet material Expired - Lifetime US3593990A (en)

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LU54091 1967-07-12

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US (1) US3593990A (it)
AT (1) AT292942B (it)
BE (1) BE716925A (it)
DE (1) DE1756793A1 (it)
ES (1) ES355928A1 (it)
FR (1) FR1570255A (it)
GB (1) GB1240501A (it)
LU (1) LU54091A1 (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6032952A (en) * 1997-04-30 2000-03-07 Xerox Corporation Document handling system having a self-levitating pressure loading device
US6406017B1 (en) * 1999-07-16 2002-06-18 Sharp Kabushiki Kaisha Recording medium transportation apparatus
US9670616B2 (en) 2014-12-11 2017-06-06 Georgia-Pacific Consumer Products Lp Active web spreading and stabilization shower
CN109052919A (zh) * 2018-08-28 2018-12-21 贵州大成科技玻璃有限公司 一种用于玻璃钢化炉的石英陶瓷辊
FR3085676A1 (fr) * 2018-09-12 2020-03-13 Saint-Gobain Glass France Dispositif de convoyage de feuilles de verre
CN115159139A (zh) * 2022-08-15 2022-10-11 业成科技（成都）有限公司 上下料装置和转运设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1132397B (it) * 1980-08-12 1986-07-02 Cavanna Spa Trasportatore lineare per prodotti dolciari

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1618660A (en) * 1926-07-01 1927-02-22 Hartford Empire Co Apparatus for handling glassware
US2138178A (en) * 1935-08-21 1938-11-29 Dresden Leipziger Schnellpress Sheet delivery device for printing machines
US2346500A (en) * 1942-01-20 1944-04-11 Coe Mfg Co Drying method and apparatus
US2948381A (en) * 1958-09-10 1960-08-09 Diamond National Corp Article transfer and spacing device
DE1108711B (de) * 1959-04-24 1961-06-15 Roto Werke A G Blattablege-Vorrichtung, insbesondere fuer Rotationsvervielfaeltiger
US3217421A (en) * 1962-09-18 1965-11-16 Lowe Edison Method and apparatus for treating foods with gaseous media
US3281229A (en) * 1963-11-29 1966-10-25 Permaglass Thermally compensated bed for supporting glass sheets
US3336026A (en) * 1964-02-27 1967-08-15 Roland Offsetmaschf Sheet feeding arrangement for a sheet printing machine
US3395943A (en) * 1965-10-22 1968-08-06 Pilkington Brothers Ltd Methods of and apparatus for carrying glass sheets
US3411772A (en) * 1966-02-03 1968-11-19 Ivanhoe Res Corp Apparatus for registering a fabric workpiece

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1618660A (en) * 1926-07-01 1927-02-22 Hartford Empire Co Apparatus for handling glassware
US2138178A (en) * 1935-08-21 1938-11-29 Dresden Leipziger Schnellpress Sheet delivery device for printing machines
US2346500A (en) * 1942-01-20 1944-04-11 Coe Mfg Co Drying method and apparatus
US2948381A (en) * 1958-09-10 1960-08-09 Diamond National Corp Article transfer and spacing device
DE1108711B (de) * 1959-04-24 1961-06-15 Roto Werke A G Blattablege-Vorrichtung, insbesondere fuer Rotationsvervielfaeltiger
US3217421A (en) * 1962-09-18 1965-11-16 Lowe Edison Method and apparatus for treating foods with gaseous media
US3281229A (en) * 1963-11-29 1966-10-25 Permaglass Thermally compensated bed for supporting glass sheets
US3336026A (en) * 1964-02-27 1967-08-15 Roland Offsetmaschf Sheet feeding arrangement for a sheet printing machine
US3395943A (en) * 1965-10-22 1968-08-06 Pilkington Brothers Ltd Methods of and apparatus for carrying glass sheets
US3411772A (en) * 1966-02-03 1968-11-19 Ivanhoe Res Corp Apparatus for registering a fabric workpiece

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6032952A (en) * 1997-04-30 2000-03-07 Xerox Corporation Document handling system having a self-levitating pressure loading device
US6406017B1 (en) * 1999-07-16 2002-06-18 Sharp Kabushiki Kaisha Recording medium transportation apparatus
US9670616B2 (en) 2014-12-11 2017-06-06 Georgia-Pacific Consumer Products Lp Active web spreading and stabilization shower
CN109052919A (zh) * 2018-08-28 2018-12-21 贵州大成科技玻璃有限公司 一种用于玻璃钢化炉的石英陶瓷辊
FR3085676A1 (fr) * 2018-09-12 2020-03-13 Saint-Gobain Glass France Dispositif de convoyage de feuilles de verre
CN115159139A (zh) * 2022-08-15 2022-10-11 业成科技（成都）有限公司 上下料装置和转运设备
CN115159139B (zh) * 2022-08-15 2024-06-11 业成科技（成都）有限公司 上下料装置和转运设备

Also Published As

Publication number Publication date
FR1570255A (it) 1969-06-06
GB1240501A (en) 1971-07-28
AT292942B (de) 1971-09-10
DE1756793A1 (de) 1970-11-05
LU54091A1 (it) 1969-04-29
BE716925A (it) 1968-12-23
ES355928A1 (es) 1969-12-16

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