US979781A - Drying apparatus. - Google Patents

Drying apparatus. Download PDF

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US979781A
US979781A US48540109A US1909485401A US979781A US 979781 A US979781 A US 979781A US 48540109 A US48540109 A US 48540109A US 1909485401 A US1909485401 A US 1909485401A US 979781 A US979781 A US 979781A
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chamber
condensing
roller
evaporating
evaporating chamber
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US48540109A
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George H May
William H Grosvenor
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/20—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wires

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  • Gnoncn H. MAY and lViLLIAM M. GRosvnNoR citizens of the United States, and residents, respectively, of Newburgh, Orange county, New York, and (.lrrantwood, Bergen county, New Jersey,
  • the invention relates to an improvement in drying apparatus, for drying paper, or
  • the objects of the invention are to enable the material to be passed throu h .the a paratus continuously, and to be 'ried whi e passing therethrough; to dry the material quickly anduniformly, and thereby to secure economy andat the same time to produce a superior quality of goods; to enable may be used over and'bve'r again,.'thus-se curing economy and preventing waste; to
  • the invention consists first in the combination with an evaporating chamber'which ing chamber and be material can be .tinuous circulation of the drying medium,
  • heating means suitably placed in connection with the evaporating and con- -densing chambers so as to heat the drying medium after passing through the condenso chamber, and tension an holding and driving devices by means of which the material 'can be continuously passed through the evaporating chamber and subjected to the action of the dr ing medium, whereby the ried in a continuous operation, and can be supported and held under such tension and in such a manner as to dry the same uniformly and without causing it to warp or wrinkle.
  • This art of. the inven- 'tion also consists in provi ingsuch driving re it comes into contact with the material which is being dried,
  • . is provided with any suitable form of heatand holding and tension devices at each end I of the apparatus, so that the material can be passed ineither direction through the evaporating chamber, and back and forth as many times as may be necessary without disturbingthe material or relieving it from tension, and without substantial loss of time.
  • the invent-ion also consists, in providing means for applying the coating to the material within the evaporating chamber, or an extensionthereof, so constructed as to prevent, so far as is possible, the loss of the vapor from the evaporating chambegfand so constructed that the apparatus for applying the coating maybe readily seen and easily accessible.
  • the invention also consists in certain driving and supporting mechanismby means of which the directionimwhich the material I that when one roll of. material has been dried, another rol l may be'conveniently ap plied to the machine.
  • the invention also consists in providing bearing surfaces against which the material bears and by which it is. supported in i ts passage through the evaporating chamber, and in grounding these devices so as to prevent sparking and thereby prevent or dimin ish the danger ofexplosion of the gases, which may be more or'less inflammable in character.
  • This part of the invention also consists in providing the evaporating chamber with one or more walls of yielding material, and makingthe other walls substantially rigid whereby if any explosion occurs the yielding wall or walls will be rent but the rest of the apparatus will be uninjured.
  • the invention consists of other features of construction and combinationsof parts hereinafter described and claimed.
  • Figure 1 is aplan view of the twoendsof the apparatus-showing the driving and holding and tension devices, the middle portion of the machine being broken'away;
  • Fig.2 is a vertical longi-.
  • Fig. 3 is a vertical longitudinal sectional View of the other end of the.
  • Fig.4 is a vertical vcross-sectional view through the middle of the apparatus
  • Fig. 5 is aside elevation of one end of the machine
  • Fig. 6 is an end elevation of the same end of the machine, being partly;
  • 1 isthe evaporating chamber, which may 'be made of any suitable form and size. It is provided with walls 2, 2 of any suitable material, which are constructed, so. as to be substantially rigid, and thus to withstand thefo-rce of any explosion that may occur within the apparatus. These wall's'are constructed so ,as'to be substantially impervious to the gases, and so as not to be aifec'ted by the temperatures employed in the apparatus and so astobe substantially fireproof. These walls are preferably provided with a metal lining. 3
  • the upper wall or covering 4 is made of a thin cloth or webbing which can be easily torn soas not to confine the gases incase of such explosions as mayccc'ur with the mixturev of gases present in the ap aratus'. 3 J .11
  • the crossbars 7 which carry the bea'ring surfaces '5.
  • the crossbars 7 are bolted to the other side wall of the'evaporatin'g chamber in any convenient manner.
  • the bearing pieces 5' are grounded electrically by electrical conductors arranged in any suitable manner.
  • 'In the form shown 8 are the wires connecting the ,bearing' p-iecest) with the metal lining 3 of the evaporating chamber, and 9 are wires connecting the metal lining with the heating pipes 10 placed at the lower part of theevaporating chamber, or in any other'suitablelocation.
  • baflle plates cause the ascending current of air to pass to the middle of thechamber and then underneath the material, to the edges thereof; and then across the top of the materialfto themiddle thereof, and then upwardly to the top of the evaporating chamber.
  • '12 represents the' 'lna'terial which is'being r d-L 13 is the condensing chamber w'hich is separated from the evaporating chamber by the wall 14, and which 1s connected withthe evaporating chamber at the topand the bottom, as shown, to permit of a continuous circulation of the drying maximni'np through the evaporating chamber, 'thenQ'intd the top of the condensing 'cha'm'ber, then down through the condensing chamber, and then maintain.
  • a suitable temperatureli'n'the'con- I densing chamber; 16 is a trough or receptacleto receive or catch the condensed liquld or solvent which 'is condensed out of the drying medium.
  • pipe 15 is continued to thevery bottom of tank 16 so as to keep the liquid or solvent is a dischargepipe leading from the receptacle 16 through which the liquid or solvent can be discharged and recovered from the apparatus so that it can be again used in preparing the material which is being fed into the apparatus, or in preparing the coating to be applied thereto.
  • 19 is a hinged door forming one side of the condensing chamber by means of which ready access may be had to the condensing chamber and the condensing pipes.
  • 20' is the supply pipe of the heating coil, and 21 is thereturn pipe of the same.
  • This chamber 22 is a chamber for incl'osing the coating device.
  • This chamber forms an extension of the evaporating chamber, and the walls of it are made substantiallytight so as to prevent so far as is possiblethe vapor .or solventv in the evaporating chamber from 'escap-' .ing from the apparatus.
  • coating and spreading devices can be easily observed, and by means of which ready access can be had to thesedevices.
  • a spreading device or-knife which is adapted to slide up and down in the bearings 26 in the side walls of the chamber 22.
  • This knife can be inserted in place or removed from the apparatus by opening the hinged cover23 immediately above, and slipping the knife into or out of the bearings 26.
  • the knife is made entirely of metal or ismade'with a metal'bearing. piece and is suitably grounded by connecting it electrically with the metal frame 61, as by the Wire 62.
  • This frame is electrically connected 'in any suitable manner with the metal lining 3 or the heating pipes. Any other suitable form of coating or spreading or dipping device, such as rollers or brushes, may be used.
  • 27, 27 are rolls for supporting the' material on either side of the spreading device. These rolls are made of any suitable material. If
  • contact brushes v 28 may be provided with contact brushes v 28. These contact brushes may beconnected electrically with the metal lining of the chamber, so as to be electrically grounded.
  • the coating composition is held in any suitable reservoirsuch as the tank 63,- which is connected by a pipe 64 with a funnel 65. extending through an opening in the hingedcover 23 at a point outside-of the knife 25.
  • the pipe 64 is provided with a valve 66, and
  • the chamber 22 is provided with a recess or depression 30 formed by the wall of the chamber and adapted to receive the drip tank 31 which is placed immediately below the spreading device so as to receive or catch any surplus of the coating composition which may drop down from the material.
  • the tank 31 When the tank 31 is fall it. can be withdrawn through the door 32 which is in the side of the chamber 22 and which is constructed so as to make when closed a substantiallyv air-tight joint with the wall of the chamber 22.
  • Each end of the machine is provided with a chamber 22 such as already described, with all the parts from 23 to 32 inclusive.
  • Each end of the apparatus is provided with driving, holding and tension devices. These devices are ofthe same construction at both ends.
  • 36 is a roller whichvacts asa receiving roller when its end of the machine is'used as the discharge end, and'as the supply roller when its .end of the machine is used as the supply end.
  • This roller is slipped on to a square shaft 35 Y mounted in suitable hearings in the frame of the machine.
  • 37 is a drivingroller or drum, and 38 is an intermediate roll.
  • the material 12 passes out of the chamber 22, after being dried, and over the driving roller 37, and then over the intermediate roller 38 andv is then wound upon the receiving roller 36.
  • rollers are driven as follows.
  • 39 is-a drum or pulley (see Fig. 1), which is driven by any suitable means.
  • 40 is a belt connecting the drum 39 with the pulleyal which is fast upon the shaft 42.
  • This shaft carries the pinion 43 which meshes with the gear 44 on the shaft 45.
  • the shaft 45 carries the driving roller 37.
  • 46 is a pulley fastened to the shaft 45.
  • 47 is a belt conuectingthe pulley driven in such a direction as to drive the belt 40 in the direction indicated bythe arrow in this figure, the driving-roller 37 will thereon and to engage with the pulley 51.
  • the receiving roll 36 will be driven so as to wind
  • the tendency will be to drive the receiving roller 36 faster than the roller 37, which will keep the goods taut and under the proper tension, but the belt and pulley arrangement will permit the belts to sli upon the pulleys, and this slip motion will cause the speed of the receiving roller to be properly adjusted with reference to the speed of the roller 37.
  • . 53 is a clutch of any suitable form fastened to the shaft 52 and adapted to be moved longitudinally By means of this clutch the pulley 51 can be fastened to the shaft 52 so as to revolve therewith, or can be unlocked from the said shaft so as to turn freely thereon.
  • .54 is a handle for operating said clutch.
  • 55 is a brake or friction device of any suitable form adaptedto encircle and bear against-a disk on the shaft 52 so as to retard the motion of said shaft when the roller 36 is being usedas a supply roller, and thus to maintain a tension on the goods as they pass from said roller.
  • Any suitable form of .brake may be employed, and its friction on the shaft 52 may be regulated by any suitable adjusting device, for example thescrew 56.
  • 57 is a pressure rolladapted to bear against the under side of the belt 50 to maintain the proper tension on said belt. It is mounted on the end'of an'arm 58 suitably pivoted to the frame of the machine, and carrying a weight. 59 at its other endwhich canbe moved so as to adjust the pressure.
  • 60 is a loose pulley on the shaft 42.
  • 40' is .a belt connecting the'pulley 39'with the loose pulley 60'- on the shaft 42'at the other end of the machine.
  • 41 is a fast pulley on the shaft 42 at the other end of the machine.
  • 39 is revolved in such a direction as to move the belt .40.- as indicated by thearrow in Fig. l.
  • the roller 36 is provided with an end wrapper, that is to say, with a strip of material which is fastened at one end to the roller, or which is wound upon it a sufficient number of times to be secured thereto, and which is adapted to be attached at the other end to the end of the material which is to be dried in the apparatus.
  • an end wrapper that is to say, with a strip of material which is fastened at one end to the roller, or which is wound upon it a sufficient number of times to be secured thereto, and which is adapted to be attached at the other end to the end of the material which is to be dried in the apparatus.
  • This end wrapper must be long enough to extend entirely through the apparatus without being disconnected or wholly unwound from its roller 36.
  • This afi'ords an easy means of drawing any material into the apparatus," and it also enables the materialto be drawn entirely through the apparatus, and then drawn back again, and so on as many times as may be desired, thereby drying the ends of the material as thoroughly asthe middle portions.
  • the operation of our machine is as" follows: A roller 36 with a roll of oods wound thereon is laced uponthe slia t 35. The inner end of t is roll is attached to the end of the wrapper connectedwith the roller 36.
  • the free end of the roll of goods is then attached to the wrapper extending through the machine from the roller '36 at the other end of the apparatus.
  • the roller 36 bearing the roll of oods is disconnected from the driving mec anism by throwing out the clutch 53.
  • the roller 36 at the 'd i sthe material is placed in the tank'6 3, and" the valve 66 is so adjusted that this composition will befed'through the pipe 64 and the funnel 65 onto the material in suitable quantity.
  • the knife or spearing device 25 is inserted in its bearings at the supply end of the machine, and--is properly adjusted therein so as to bear upon the material with suitable pressure. This adjustment maybe made in any desirable way, as by a key driven between the knife and the wall of the chamber.
  • the knife is withdrawn from the other end of the apparatus.
  • the heating pipes 10 are heated 1n any suitable manner as by steam, and a suitable cooling fluid is-passed through the condensing pipe 15 H at such a temperature as to condense the vapor or solvent which is eva orated from the material in the evaporating chamber.
  • the air Within the evaporatin chamber is heated at the bottom thereo and rises through that chamber, and is deflected by the baflle lates' 11 and caused to flow first undernea the material, and then across its upper surface, and thereby heats and dries the same and carries off the evaporated moisture or solvent into the u per part of the eva orating chamber, an then flows down t rough the condensing chamber in which the moisture or solvent is condensed,
  • the surfaces of the matelgia l are exposed uniformly and thoroughly to the current of drying medium, and thus all parts of the material aredried uniformly, and at the same rate.
  • the material can be fed through the machine at any rate of speed desired, and-any desired temperature may be maintained in the evaporatm chamber.
  • the material passes from the ro ler 36 at the supply end over the ihtermediate roll 38, and then around the driving roller 37, and then between the I I spring pieces: 29 into the chamber 22, and
  • the material is as may be desired. It is thus prevented tram wrinkling or warping er; bending, and is exposed to the operation of the drying medium in a uniform condition. This greatly improves the quality of the product.
  • the coatin devices are contained in evaporating chamber, and which are tight so that the escape of moisture or solvent vapor contained n the evaporating chamber is preyented as far as possible.
  • the points art of turned through the apparatus in the opp of entry of the material, and of exit between the spring pieces 29, are also tight, so that there is no leakage of gas therethrough- This results in substantial economy especially where solvents are being used which are valuable, as in the manufacture of waterproofed cloth or paper.
  • As the openingsthrough which't-he goods enter and leave the apparatus are on the same level, there is not the'same tendency for the heatedgases to escapefas there would be if these openings were at different levels.
  • any surplus of the coating mixture will 1 flow ,down past the edges of the material and'into the tank 30. From time to time this tank may be withdrawn through the door 32, and emptied and then replaced.
  • the hinged doors 24, .24 with their transparent panes enable the coating apparatus to be easily watched, and afi'ord ready access to the same.
  • the quality of the product is greatly improved.
  • the solvents are recovered and may be used over and over again.
  • the escape of the solvent vapors-from the apparatus is substantially prevented
  • the composition or coating material is applied within the apparatus itself so that there is no substantial loss ofsolvent vapor at this point.
  • the danger of injury or loss through explosion is reduced to a.
  • condensing means connected with said condensing chamber, means for heating the drying medium. before it comes into contact with the material being dried, electrical connections grounding the exposed metal surfaces in the evaporating chamber, means at each end of the evaporating chamber forholding the material, and means for moving the material through the evaporating chamber.
  • a drylngapparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporatin chamber, condensing means connected..w1tl1 said condensing chambenheating means to heat the drying medium before it comes into contact with the material being dried, means to support the material while passing through the evaporating, chamber, a
  • driving roller at the d scharge end means for driving the: driving roller, and means for driving the receiving roller at a variable speed so as to maintain the proper tension on the material, a supfply roller at the supply end, and means or putting a tension on the material at the supply end.
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporatin chamber, condensing means connected w1th said condensing chamber, heating means to heat the drying medium before it comes into contact with the material being dried, means to support the material while passing through'the evaporating chamber, a driving roller' at the discharge end, a receiving roller at the discharge end, means for driving the driving roller, a 'belt and pulley connection between the shaft of the driving roller and the shaft of the receiving roller whereby the receiving roller is driven at a variable speed so as to maintain the proper tension on the material, a supply' roller at the supply end, and means for putting a tension on the material at the supply end.
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passagefrom the condensing chamber to the material to be dried, means to support the materialwhile passing through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consisting of a roller to hold the material, means for driving said roller, and a disconnecting device between the roller and said driving means, whereby the roller can turn in the reverse direction, a brake for the holding roller, and a drivin roller, whereby the material may be passes back and forth through the eva orating' chamber without being relieved rom tension while passing through said chamber.
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a receptacle to hold the condensed liquid, heating means to heat the drying med um on-its passage from the condensing chamber to the material being dried, supporting devices to support the material while passin through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consistiri of a roller to hold the material, means disconnectingdevice between the roller and said driving means, whereby the roller can turn in the reverse direction, a brake for the holding roller, and a driving roller, a driving pulley and means for connecting and disconnecting the driving pulley alternately with and from the driving and holding devices at either end of the evaporating chamber.
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with and from the driving and holding deto hold the condensed liquid, heating means to heat the "drying medium on its passage from the condensing chamber to the material being dried, supporting devices to support the material while passing through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consisting of a roller to hold the material, a brake for the holding roller, and a driving roller, the driving pulley 39, the belts 40 and 40, the fast pulleys 4G1 and 41,
  • the loose pulleys and 60' the shafts 42, the shafts 45 carrying the, drivingrollers, and geared to the shafts 42, the shafts 52 of the holding rollers, and belt and pulley connections between the shafts 45 and the shafts 52.
  • a' condensing chamber suitably-connected with the evaporating chamber, condensing means connected w th sand condensing chamber, heatingmeans to heat the drylng medium on its passage from the condensing chamber to the material being dried, means to support the material while. passing through the evaporating chamber, a receiving roller at the discharge end, means for driving the receiving roller, a supply roller at the supor driving said roller, and a .ply end, means for putting a tension on. the material at the supply end, and an end- 'wrapper connected wlth. the supply roller.
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means miner-ted with said condensing chamber, fieating means to heat the drying medium on its passage from the condensing chamber to the material being dried, means to support the material while passing through the evaporating chamber, a drivingand holding device at each end of the 'evaporatingchamber consisting of a roller to hold the material, means for driving said roller, and a disconnecting device between the roller and said driving means, whereby the rollercan turn in the reverse direction, means for holding the material under tension, and an end wrapper connected with the holding.
  • roller at each endwhereby the entire ma-' terial may be passed back and forth through the evaporating chamber.
  • a dryingapparatus the comblnation of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means.
  • heating means to heat the drying medium on its passage from the condensing chamber to the material beiIi dried, means to support the material while'passing through the evaporating chamber, some of the walls of said chamber being made of suitable yielding material, and the other walls being tomparatively rigid.
  • a drying apparatus the combination of an evaporating chamber, a condens- 'ing chamber suitably connected wit-h the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passage from the condensing. chamber to the material bein the material while passing through the evaporating chamber, some of ,the Walls of said chamber being 'made of impervious yielding material, and the other Walls being comparatively rigid, a drivin -roller at'the discharge end, a receiving rofier at the discharge end, means forilriving'the receiving dried, means to, support roller, a supply roller at the supply end,
  • v heating means to heat "the drying medium on its passage'from the condensing chamber to the material being dried, bearing surfaces to support the 'material while passing through the evaporating chamber, and electrical conductors connected with said bear ing surfaces and, grounding the same.
  • a drying apparatus the combination of an evaporating chamber, a condens-' ing chamber suitably connected with the evaporating chamber, condensing means 40 connected with said condensing chamber, heating means to heat the drying medium on its passage fromthe condensing chamber to the material bein dried, bearing surfaces to support the material while passing through the evapprating chamber, and electrical conductors connected with said bearing surfaces and grounding the same, some -:of the walls of said chamber being made of n im ervious yielding material, and the other wa ls being comparatively rigid.
  • heating means to heat the drying-medium beforeit comes into contact with the material being dried, bearing'surfaces to support the material while passing througlr'the evaporating chamber, and electrical con- V vdu'ctors connected with said bearing surfaces and rounding the same, a driving-and hold ing device at each end of the eva orat-ing chamber consisting of a roller to hol I the material, means for. driving, said roller, and a 'material being dried, bearing surfaces to support the material, while passing throu h disconnecting device between the roller and saiddrivingmeans, whereby the roller can turn in. the reverse direction, a brake for the holding roller, and a driving ro1ler.
  • a drying apparatus the combination of an evaporating chamber, .a condensing chamber suitably connected with the I evaporaing chamber, condensing means connected with said condensing chamber, heat-' ing means-to heat the drying medium on its passage from the condensing chamber to the material being dried, supporting devices tosupport the material while passing through the evaporating chamber, some of the walls of said chamber being made of impervious yieldingmaterial, and the, other walls being lined with-metal.
  • a drying apparatus the combination of an evaporating chamber, a condensing. chamber suitably connected with the evaporating chamber thereof, condensing .means connected with said condensing chamber, heatlng means to heat the.dry1ng medium before it comes into contact with the thel evaporating chamber, some of the wa is of said chamber being made of impervious yielding material, and the other walls being lined. with metal, the bearing surfaces being connected electrically with the metal lining,
  • a coating and drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensin means connected with said condensing c hamber, heating means to heat the drying medium on its passage from the'condensing chamber to the material to be dried, means for coat-- ing the material with the coating substance, and for spreading it on said material, said coating and spreading means being inclosed in a c amber at the end of the evaporating chamber, and holding devices ateach end of. said evaporating chamber to maintain a tension on the material.
  • heating means to heat the drying medium on its passage from the condensing chamber to the material to be dried, means for coating the material with the coating substance and for spreading iton said material, said coating and spreading means being inclosed in a chamber forming an extension of the eva orating chamber, movable covers for sai extension chamber, and holding devices at eachend of said evaporating chamber to maintain a tension on the material.
  • heating means to heat the drying medium before it comes into contact with the material to be dried, means at each end of the evaporating chamber for coating the material with the coating substance and for spreading iton said material, and holding and driving means at each end of said evaporating chamber.
  • a coating and drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means'in said condensing chamber, heating means to heat the drying medium before it comes into contact with the material to be dried, means to support the material while passing through the evaporating chamber, means at each end of theevaporating chamber for coating the material with the coating substance, and for spreading it on said material, said coating and spreading means being inclosed in a chamber forming an extension of the evaporating chamber at each end thereof, and holding and driving means ateach end of saidevaporating chamber.
  • condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a receptacle to hold the condensed liquid, heating means. to heat the drying medium on its passage from the condensing chamber to the material to be dried, bearing surfaces to support the material while passing through the evaporating chamber and electrical conductors connected with said bearing surfaces and grounding the same, means at each end of the evaporating chamber for coating the material with the coating substance and forspreading it on said with the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on Its passage from the condensing chamber to the material to be dried, means to support the material while passing through the evaporating chamber, means for coating the material with the coating substance and forspreading it on said material, said coating and spreading means being in'closed in a chamber at the end of the evaporating chamber, and a removable drip tank in said last mentioned chamber to catch the surplus of the coating
  • a drying apparatus the combination of an evaporating chamber, a condensing chamber suitably connected with'the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passage from the condensing chamber to the material being dried, means to support the material while passing through the evaporating chamber, inlet and outlet openings for the material in the evaporating chamber on the same level with each other and holding devices at each end of said evaporating chamberto maintain a tension on the material.
  • ing chamber suitably connected with the evaporating chamber, condensing means connected with said. condensing chamber, heating means to heat the drying medium on its passage from the condensing chamber tdthe material being dried, means to support the material while passing through the evapo rating chamber, inlet and outlet openlngs for the material in the evaporating chamber provided with spring pieces to bear against and inclose the material and, holding devices at each end of said evaporatingchamber to maintain a tension on the material.
  • a drying apparatus the combination of an evaporating chan'ibcr, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a. rece tacle' to hold the condensed liquid, the con ensingtubes extending down substantially to the bottom of said receptacle,heatingmeans to heat the drying medium before it comes into contact with the material benam'eS to this specification, in the presence 1ng dried, means to support the material of two subscribing witnesses.

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  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Drying Of Solid Materials (AREA)

Description

e. H. MAY 5w. M. enosvmma.
, DRYING APPARATUS. APPI IOATIOH rinnn 1:43.24. 1909 Patented Dec, 27, 1910.
5 SHEETS-BREE! 1,
0 Jig MWW G. H. MAY & W. M. GROSVENORL DRYING APPABATUS. APPLIOATIOH FILED MAR. 24 1999.
Patented Dec. 27, 1910.
G. H. MAY 6: W. MLGROSVBNOR.
DRYING APPARATUS.
urLmA'nox rump urn- 24. 1909.
Patentd. Dec. 27, 1910.
5 SHEETS-SHEET 3.
mammals;
44 %MZM Patented Dec.27,1910.
6 SHIIBTk-BHEE'I 4.
s xi'l lllllllllili DRYING APPARATUS.
APPLIUATIOI FILED KAI. 24. 1809.
II n lmmlllllm G. H. MAY 6: W. M. GROSVENOR.
@H@ @Mmv amen/17oz:
5 SHEETS-SHEET 5 Patented Dec. 27, 1910.
DRYING APPARATUS.
APPLICATION FILED MAR. 24, 1909.
e. H. MAY & W. MfGROSVENOR.
l l I v I I UNITED STATES P ENT OFFICE.
GEORGE H. Meat, or NEWBUBGH, NEW YORK, AND WILLIAM anan'rwoon, NEW JERSEY,
m. GROSVENOB, or
DRYING APPARATUS.
Patented Dec. 27, 1910'.
11 all 'who'm it may concern:
Be it known that we, Gnoncn H. MAY and lViLLIAM M. GRosvnNoR, citizens of the United States, and residents, respectively, of Newburgh, Orange county, New York, and (.lrrantwood, Bergen county, New Jersey,
, have invented a certain new and useful the solvents to be recovered so that they- Drying Apparatus, of which the following isa specification. The invention relates to an improvement in drying apparatus, for drying paper, or
'cloth,' or other material, in the web, and it is especially applicable to the coating and drying of materials such aswater-proofed cloth aper' in which there is applied to the sur ace of the material some composition containing solvents, such asbenzin or turpentine.
The objects of the invention are to enable the material to be passed throu h .the a paratus continuously, and to be 'ried whi e passing therethrough; to dry the material quickly anduniformly, and thereby to secure economy andat the same time to produce a superior quality of goods; to enable may be used over and'bve'r again,.'thus-se curing economy and preventing waste; to
enable substantially thesame body of air or heating medium to be used over and over again, thereby preventin loss of heat and aiding in the recovery 0' the solvents, and
securing more uniform drying; to enable the material to be passed backward and forward through the ap aratus without having to remove the same rom its supporting devices and without relieving the same fromtension while it is passing through the apparatus, and without substantial loss of time; to keep the material under the proper tension so as to revent. it from becoming warped or wrink ed or uneven, to prevent sparking in the apparatus which might lead to explosions, and to provide means whereby any explosion that 'may occur will be rendered relatively harmless; to provide a coating device for coating the material, which shall be accessible and visible, and which shall be so arranged as to substantially prevent the escape of vapors from the evaporating chamber} and in other ways to improve the construction and operation of the apparatus.
The invention consists first in the combination with an evaporating chamber'which ing chamber and be material can be .tinuous circulation of the drying medium,
and condensing'means in said condensing chamber, heating means suitably placed in connection with the evaporating and con- -densing chambers so as to heat the drying medium after passing through the condenso chamber, and tension an holding and driving devices by means of which the material 'can be continuously passed through the evaporating chamber and subjected to the action of the dr ing medium, whereby the ried in a continuous operation, and can be supported and held under such tension and in such a manner as to dry the same uniformly and without causing it to warp or wrinkle. This art of. the inven- 'tion also consists in provi ingsuch driving re it comes into contact with the material which is being dried,
. is provided with any suitable form of heatand holding and tension devices at each end I of the apparatus, so that the material can be passed ineither direction through the evaporating chamber, and back and forth as many times as may be necessary without disturbingthe material or relieving it from tension, and without substantial loss of time.
The invent-ion also consists, in providing means for applying the coating to the material within the evaporating chamber, or an extensionthereof, so constructed as to prevent, so far as is possible, the loss of the vapor from the evaporating chambegfand so constructed that the apparatus for applying the coating maybe readily seen and easily accessible.
The invention also consists in certain driving and supporting mechanismby means of which the directionimwhich the material I that when one roll of. material has been dried, another rol l may be'conveniently ap plied to the machine. I I y The invention also consists in providing bearing surfaces against which the material bears and by which it is. supported in i ts passage through the evaporating chamber, and in grounding these devices so as to prevent sparking and thereby prevent or dimin ish the danger ofexplosion of the gases, which may be more or'less inflammable in character. This part of the invention also consists in providing the evaporating chamber with one or more walls of yielding material, and makingthe other walls substantially rigid whereby if any explosion occurs the yielding wall or walls will be rent but the rest of the apparatus will be uninjured. The invention consists of other features of construction and combinationsof parts hereinafter described and claimed. Theapparatus 1s shown in the accompany;
ing drawlngs in which Figure 1 is aplan view of the twoendsof the apparatus-showing the driving and holding and tension devices, the middle portion of the machine being broken'away; Fig.2 is a vertical longi-.
t-udinal sectional View of one end of the apara-tus, including a portion of the evaporatmg chamber; Fig. 3 is a vertical longitudinal sectional View of the other end of the.
apparatus, said view passing through the condensing chamber so as to show the pipestherein; Fig.4 is a vertical vcross-sectional view through the middle of the apparatus; Fig. 5 is aside elevation of one end of the machine; and Fig. 6 is an end elevation of the same end of the machine, being partly;
broken away. I I 1 Similar numbers indicate s'nmlar parts 1n the different figures.
Referring to the drawings, 1 isthe evaporating chamber, which may 'be made of any suitable form and size. It is provided with walls 2, 2 of any suitable material, which are constructed, so. as to be substantially rigid, and thus to withstand thefo-rce of any explosion that may occur within the apparatus. These wall's'are constructed so ,as'to be substantially impervious to the gases, and so as not to be aifec'ted by the temperatures employed in the apparatus and so astobe substantially fireproof. These walls are preferably provided with a metal lining. 3
.made of suitable material. This material must 'beofsuch a nature as not to be acted upon by the vapors or gases which are used or producedin the-apparatus.- This metal lining aids in making the walls of the apparatus rigid, andalso aids in grounding the bearing surfaces upon which the material rides as hereinafter explained. In the ,form shown in the drawingsthe upper wall or covering 4 is made of a thin cloth or webbing which can be easily torn soas not to confine the gases incase of such explosions as mayccc'ur with the mixturev of gases present in the ap aratus'. 3 J .11
5,.5arebearing sur aces made of metal, preferably of copper plate, upon which or over which the material moves. Thesebear; ing surfaces are supported in any'suita'ble manner. In the form -show ings the wall of the evapora g chamber is provided with supportingo' strengthening ribs 6 suitably bolted in place, and these ribs n the drawg iii:
support the crossbars 7 which carry the bea'ring surfaces '5. The crossbars 7 are bolted to the other side wall of the'evaporatin'g chamber in any convenient manner. The bearing pieces 5' are grounded electrically by electrical conductors arranged in any suitable manner. 'In the form shown 8 are the wires connecting the ,bearing' p-iecest) with the metal lining 3 of the evaporating chamber, and 9 are wires connecting the metal lining with the heating pipes 10 placed at the lower part of theevaporating chamber, or in any other'suitablelocation.
, 11,11 are baflle plates extending throughfoutthe length of the evaporating chamber,
and projecting from the sides of the cham- I ber toward the middle thereof in the man'- ner clearly shown in Fig, These baflle plates cause the ascending current of air to pass to the middle of thechamber and then underneath the material, to the edges thereof; and then across the top of the materialfto themiddle thereof, and then upwardly to the top of the evaporating chamber.
'12 represents the' 'lna'terial which is'being r d-L 13 is the condensing chamber w'hich is separated from the evaporating chamber by the wall 14, and which 1s connected withthe evaporating chamber at the topand the bottom, as shown, to permit of a continuous circulation of the drying mediuni'np through the evaporating chamber, 'thenQ'intd the top of the condensing 'cha'm'ber, then down through the condensing chamber, and then maintain. a suitable temperatureli'n'the'con- I densing chamber; 16 is a trough or receptacleto receive or catch the condensed liquld or solvent which 'is condensed out of the drying medium. The
pipe 15 is continued to thevery bottom of tank 16 so as to keep the liquid or solvent is a dischargepipe leading from the receptacle 16 through which the liquid or solvent can be discharged and recovered from the apparatus so that it can be again used in preparing the material which is being fed into the apparatus, or in preparing the coating to be applied thereto.
18 is a by-pass in the condensing chamberto permit the drying medium to escape past the receptacle 16. 3
19 is a hinged door forming one side of the condensing chamber by means of which ready access may be had to the condensing chamber and the condensing pipes.
20' is the supply pipe of the heating coil, and 21 is thereturn pipe of the same.
22 is a chamber for incl'osing the coating device. This chamber forms an extension of the evaporating chamber, and the walls of it are made substantiallytight so as to prevent so far as is possiblethe vapor .or solventv in the evaporating chamber from 'escap-' .ing from the apparatus.
, 23, 23 are movable orvhinged covers in the upper wall .of the chamber 22, provided with panes of glass 24, or other transparent material, through which the operation of the.
coating and spreading devices can be easily observed, and by means of which ready access can be had to thesedevices.
25 is a spreading device or-knife which is adapted to slide up and down in the bearings 26 in the side walls of the chamber 22. This knife can be inserted in place or removed from the apparatus by opening the hinged cover23 immediately above, and slipping the knife into or out of the bearings 26. The knife is made entirely of metal or ismade'with a metal'bearing. piece and is suitably grounded by connecting it electrically with the metal frame 61, as by the Wire 62. This frame is electrically connected 'in any suitable manner with the metal lining 3 or the heating pipes. Any other suitable form of coating or spreading or dipping device, such as rollers or brushes, may be used.
27, 27 are rolls for supporting the' material on either side of the spreading device. These rolls are made of any suitable material. If
made of metal, or with a metal face, they must be suitably grounded; for example,
they may be provided with contact brushes v 28. These contact brushes may beconnected electrically with the metal lining of the chamber, so as to be electrically grounded.
-The rolls 27,are supported in any suitable bea'rings supported by the walls of the cham- 29, 29 are rial, prefer-a pieces made of some spring mately spring metal or sheet rubber,
between which'the materialpasses into the chamber 22. These spring pieces form atight joint at the point where the material passes into the chamber 22 and-so prevent the substantial leakage of vapor from the apparatus. metal they must be suitably grounded.
IO If the pieces 29 are made of' The coating composition is held in any suitable reservoirsuch as the tank 63,- which is connected by a pipe 64 with a funnel 65. extending through an opening in the hingedcover 23 at a point outside-of the knife 25.
The pipe 64 is provided with a valve 66, and
. ing composition whichhas been fed on to the material.
The chamber 22 is provided with a recess or depression 30 formed by the wall of the chamber and adapted to receive the drip tank 31 which is placed immediately below the spreading device so as to receive or catch any surplus of the coating composition which may drop down from the material. When the tank 31 is fall it. can be withdrawn through the door 32 which is in the side of the chamber 22 and which is constructed so as to make when closed a substantiallyv air-tight joint with the wall of the chamber 22. Each end of the machine is provided with a chamber 22 such as already described, with all the parts from 23 to 32 inclusive. Each end of the apparatus is provided with driving, holding and tension devices. These devices are ofthe same construction at both ends.
Referring to the drawings, 36 is a roller whichvacts asa receiving roller when its end of the machine is'used as the discharge end, and'as the supply roller when its .end of the machine is used as the supply end. This rolleris slipped on to a square shaft 35 Y mounted in suitable hearings in the frame of the machine.
37 is a drivingroller or drum, and 38 is an intermediate roll.
Referring to Fig. 2, and assuming that the end of the machine there shown is the discharge end, the material 12 passes out of the chamber 22, after being dried, and over the driving roller 37, and then over the intermediate roller 38 andv is then wound upon the receiving roller 36. These rollers are driven as follows. 39 is-a drum or pulley (see Fig. 1), which is driven by any suitable means. 40 is a belt connecting the drum 39 with the pulleyal which is fast upon the shaft 42. This shaft carries the pinion 43 which meshes with the gear 44 on the shaft 45. The shaft 45 carries the driving roller 37. 46 is a pulley fastened to the shaft 45. 47 is a belt conuectingthe pulley driven in such a direction as to drive the belt 40 in the direction indicated bythe arrow in this figure, the driving-roller 37 will thereon and to engage with the pulley 51.
- the material on said roll.
be driven in such a direction as to draw the material through the evaporating chamber and toward its end of the same, and'the receiving roll 36 will be driven so as to wind By reason o-fthe respective sizes of the connecting pinions and gear wheels and pulleys, the tendency will be to drive the receiving roller 36 faster than the roller 37, which will keep the goods taut and under the proper tension, but the belt and pulley arrangement will permit the belts to sli upon the pulleys, and this slip motion will cause the speed of the receiving roller to be properly adjusted with reference to the speed of the roller 37. 53 is a clutch of any suitable form fastened to the shaft 52 and adapted to be moved longitudinally By means of this clutch the pulley 51 can be fastened to the shaft 52 so as to revolve therewith, or can be unlocked from the said shaft so as to turn freely thereon. .54 is a handle for operating said clutch. 55 is a brake or friction device of any suitable form adaptedto encircle and bear against-a disk on the shaft 52 so as to retard the motion of said shaft when the roller 36 is being usedas a supply roller, and thus to maintain a tension on the goods as they pass from said roller. Any suitable form of .brake may be employed, and its friction on the shaft 52 may be regulated by any suitable adjusting device, for example thescrew 56. 57 is a pressure rolladapted to bear against the under side of the belt 50 to maintain the proper tension on said belt. It is mounted on the end'of an'arm 58 suitably pivoted to the frame of the machine, and carrying a weight. 59 at its other endwhich canbe moved so as to adjust the pressure.
60 is a loose pulley on the shaft 42. 40' is .a belt connecting the'pulley 39'with the loose pulley 60'- on the shaft 42'at the other end of the machine. 41 is a fast pulley on the shaft 42 at the other end of the machine. The rollers and driving mechanism at the other end of themachine are the same'as those already described. 39 is revolved in such a direction as to move the belt .40.- as indicated by thearrow in Fig. l. the belt 40-is-rnnni'ng on the loose pulley 60' on the shaft 42 at the other end When the drumof the machine, and the roller 36 at the'other aend of the machine is acting as, a supply roller and is being revolved by the material itself which is being drawn through the 7 machine by the roller 36- and the roller 37 at the discharge end. The roller 36 at the supply end is retarded in its motion, and the goods are thereby heldunder tension by the operation of the brake 55. The roller 36 is provided with an end wrapper, that is to say, with a strip of material which is fastened at one end to the roller, or which is wound upon it a sufficient number of times to be secured thereto, and which is adapted to be attached at the other end to the end of the material which is to be dried in the apparatus. When a roll of material has been drawn through the apparatus, the end wrapper connected with it is drawn through theapparatus, and after its end has passed out of the discharge end of the apparatus, this Wrapper is disconnected from the material unless the material is to be drawn back through the Y apparatus. hen. the drying of the material is completed the material is separated from the end of the wrap per, and thewrapper is then ready to be attached to the next piece of materialjto be dried in the apparatus. This end wrapper must be long enough to extend entirely through the apparatus without being disconnected or wholly unwound from its roller 36. This afi'ords an easy means of drawing any material into the apparatus," and it also enables the materialto be drawn entirely through the apparatus, and then drawn back again, and so on as many times as may be desired, thereby drying the ends of the material as thoroughly asthe middle portions. The operation of our machine is as" follows: A roller 36 with a roll of oods wound thereon is laced uponthe slia t 35. The inner end of t is roll is attached to the end of the wrapper connectedwith the roller 36. The free end of the roll of goods is then attached to the wrapper extending through the machine from the roller '36 at the other end of the apparatus. The roller 36 bearing the roll of oods is disconnected from the driving mec anism by throwing out the clutch 53. The roller 36 at the 'd i sthe material is placed in the tank'6 3, and" the valve 66 is so adjusted that this composition will befed'through the pipe 64 and the funnel 65 onto the material in suitable quantity. The knife or spearing device 25 is inserted in its bearings at the supply end of the machine, and--is properly adjusted therein so as to bear upon the material with suitable pressure. This adjustment maybe made in any desirable way, as by a key driven between the knife and the wall of the chamber. The knife is withdrawn from the other end of the apparatus. The heating pipes 10 are heated 1n any suitable manner as by steam, and a suitable cooling fluid is-passed through the condensing pipe 15 H at such a temperature as to condense the vapor or solvent which is eva orated from the material in the evaporating chamber. The air Within the evaporatin chamber is heated at the bottom thereo and rises through that chamber, and is deflected by the baflle lates' 11 and caused to flow first undernea the material, and then across its upper surface, and thereby heats and dries the same and carries off the evaporated moisture or solvent into the u per part of the eva orating chamber, an then flows down t rough the condensing chamber in which the moisture or solvent is condensed,
being. caught in the receptacle 16- and, re-
( covered through the discharge pipe l'f. The
solvent can then be used over again in preparing the coating material. The current of drying medium'pas'ses through the bypass 18 ahd down into the lower the evaporating chamber, and is t en reheated, and thus a continuous circulation of drying medium is maintained by gravity or ot er suitable means. The surfaces of the matelgia l are exposed uniformly and thoroughly to the current of drying medium, and thus all parts of the material aredried uniformly, and at the same rate. The material can be fed through the machine at any rate of speed desired, and-any desired temperature may be maintained in the evaporatm chamber. The material passes from the ro ler 36 at the supply end over the ihtermediate roll 38, and then around the driving roller 37, and then between the I I spring pieces: 29 into the chamber 22, and
7 held taut and under such tensichambers which form extensions of the over the rollers 27'and underneath the knife 25,-and then through the evaporatin chamher, .being supported therein by the aring surfaces '5', The material then asses over the rolls 27 at the discharge en out between the spring. pieces 29 and over the roller 37 and the intermediate roller'38,
and isthen Wound on the receiving roller 36/ During all this time the material is as may be desired. It is thus prevented tram wrinkling or warping er; bending, and is exposed to the operation of the drying medium in a uniform condition. This greatly improves the quality of the product.
The coatin devices are contained in evaporating chamber, and which are tight so that the escape of moisture or solvent vapor contained n the evaporating chamber is preyented as far as possible. The points art of turned through the apparatus in the opp of entry of the material, and of exit between the spring pieces 29, are also tight, so that there is no leakage of gas therethrough- This results in substantial economy especially where solvents are being used which are valuable, as in the manufacture of waterproofed cloth or paper. As the openingsthrough which't-he goods enter and leave the apparatus are on the same level, there is not the'same tendency for the heatedgases to escapefas there would be if these openings were at different levels.
As the material or fabric to be treated asses through the machine, its passage and riction over the rollers and under the knife,
are productive of static diflerences of potential, as are also the continued evaporation and condensation of liquid. This tends to produce a sparking within the apparatus.
In spite of the regulation of condensation to obtain mixtures which shall not be explosive,
there may be points where the vapor is 10- cally enriched or impoverished to such an extent as to be explosive, and while this would not produce a violent explosion, unless there were a large proportion of the vapor more or less in"this condition, it is important-to avoid even such milder combustion,.which would interrupt the operation of the apparatus and result in loss. By grounding all of the metallic rollers and bearing surfaces, and all other exposed metal surfacesin the apparatus as alreadyv described, such' sparking is substantially 'pre vented- Should any explosion occur, however, the explosion would merely tear the thin coverl, and would not injure the rest of the apparatus, as the other walls of the apparatus are made substantialiy rigid so as to resist any such explosion.
Any surplus of the coating mixture will 1 flow ,down past the edges of the material and'into the tank 30. From time to time this tank may be withdrawn through the door 32, and emptied and then replaced.
The hinged doors 24, .24 with their transparent panes enable the coating apparatus to be easily watched, and afi'ord ready access to the same. After the material has been passed through the apparatus it can be re- 0- site direction by merely shifting the belts 40 and 40 on the drum 39 so as to makethe belt 40 run on the loose pulley 60, and the belt 40' ran on the f ast pulley ll, and by clutching "the shaft 52 at what-is to be the discharge end to its pulley 51 and unclutchin the shaft 52 at the supply end from its pu ley 51. I
While in the form of apparatus shown the circulation bf the drying medium is due to gravity, it will be apparentthat t'he circulation may be produced in any other well known way. u p
Many advantages are secured by our inback and forth through the apparatus withpassing supply end.
vent-ion. The material is dried 1uickly,'
uniformly and economically. The quality of the product is greatly improved. The solvents are recovered and may be used over and over again. The escape of the solvent vapors-from the apparatus is substantially prevented The composition or coating material is applied within the apparatus itself so that there is no substantial loss ofsolvent vapor at this point. The danger of injury or loss through explosion is reduced to a.
minimum, and provision is made whereby, if an explosion occurs, no substantial damage results therefrom. The machinecan be quickly reversed so as to pass the material out loss of time. The apparatus is simple and compact. Other advantages are also secured, as-will be apparent from the above description. I
;lVhat we claim as new and desire to 'secure by Letters Patent, is:
chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, means for heating the drying medium. before it comes into contact with the material being dried, electrical connections grounding the exposed metal surfaces in the evaporating chamber, means at each end of the evaporating chamber forholding the material, and means for moving the material through the evaporating chamber.
'3. Ina drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with .the evaporating chamber, condensing means connected with said condensing chamberfheating means to heat the drying medium before it comes into contact with the material being dried, means to support" the material while through the evaporating chamber, a driving roller at the discharge end, a receiving roller at the discharge end, means for driving the receiving roller, a supply -roller at the supply end, and means for putting a tension on the material at the 4. In a drylngapparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporatin chamber, condensing means connected..w1tl1 said condensing chambenheating means to heat the drying medium before it comes into contact with the material being dried, means to support the material while passing through the evaporating, chamber, a
driving roller at the d scharge end, a receivin roller at the discharge. end, means for driving the: driving roller, and means for driving the receiving roller at a variable speed so as to maintain the proper tension on the material, a supfply roller at the supply end, and means or putting a tension on the material at the supply end.
5. In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporatin chamber, condensing means connected w1th said condensing chamber, heating means to heat the drying medium before it comes into contact with the material being dried, means to support the material while passing through'the evaporating chamber, a driving roller' at the discharge end, a receiving roller at the discharge end, means for driving the driving roller, a 'belt and pulley connection between the shaft of the driving roller and the shaft of the receiving roller whereby the receiving roller is driven at a variable speed so as to maintain the proper tension on the material, a supply' roller at the supply end, and means for putting a tension on the material at the supply end.
6. In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passagefrom the condensing chamber to the material to be dried, means to support the materialwhile passing through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consisting of a roller to hold the material, means for driving said roller, and a disconnecting device between the roller and said driving means, whereby the roller can turn in the reverse direction, a brake for the holding roller, and a drivin roller, whereby the material may be passe back and forth through the eva orating' chamber without being relieved rom tension while passing through said chamber.
7 In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the-evapo-= rating chamber, condensing meansconnected with said condensing chamber, heating means to heat the drying medium on its passage from'the condensing chamber to the material being dried, means tosupport the material while passing through the vaporating chamber, a driving and holdin device at each end ofthe evaporating chamber consisting of a roller to hold the material, means for driving said rollerat a variable speed soas to maintain the proper tension on the material, and a disconnecting device between the roller and said driving means, whereby, the roller can turn in the reverse direction, a brake for the holding roller, and a driving roller, and nieans fordriving the driving roller.
8. In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a receptacle to hold the condensed liquid, heating means to heat the drying med um on-its passage from the condensing chamber to the material being dried, supporting devices to support the material while passin through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consistiri of a roller to hold the material, means disconnectingdevice between the roller and said driving means, whereby the roller can turn in the reverse direction, a brake for the holding roller, and a driving roller, a driving pulley and means for connecting and disconnecting the driving pulley alternately with and from the driving and holding devices at either end of the evaporating chamber.
S). In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with and from the driving and holding deto hold the condensed liquid, heating means to heat the "drying medium on its passage from the condensing chamber to the material being dried, supporting devices to support the material while passing through the evaporating chamber, a driving and holding device at each end of the evaporating chamber consisting of a roller to hold the material, a brake for the holding roller, and a driving roller, the driving pulley 39, the belts 40 and 40, the fast pulleys 4G1 and 41,
the loose pulleys and 60', the shafts 42, the shafts 45 carrying the, drivingrollers, and geared to the shafts 42, the shafts 52 of the holding rollers, and belt and pulley connections between the shafts 45 and the shafts 52.
10. In a drying apparatus, the combinatio'n of an evaporating chamber. a' condensing chamber suitably-connected with the evaporating chamber, condensing means connected w th sand condensing chamber, heatingmeans to heat the drylng medium on its passage from the condensing chamber to the material being dried, means to support the material while. passing through the evaporating chamber, a receiving roller at the discharge end, means for driving the receiving roller, a supply roller at the supor driving said roller, and a .ply end, means for putting a tension on. the material at the supply end, and an end- 'wrapper connected wlth. the supply roller.
11.111 a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means miner-ted with said condensing chamber, fieating means to heat the drying medium on its passage from the condensing chamber to the material being dried, means to support the material while passing through the evaporating chamber, a drivingand holding device at each end of the 'evaporatingchamber consisting of a roller to hold the material, means for driving said roller, and a disconnecting device between the roller and said driving means, whereby the rollercan turn in the reverse direction, means for holding the material under tension, and an end wrapper connected with the holding.
roller at each endwhereby the entire ma-' terial may be passed back and forth through the evaporating chamber.
.12. In a dryingapparatus, the comblnation of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means.
connected with said condensing chamber, heating means to heat the drying medium on its passage from the condensing chamber to the material beiIi dried, means to support the material while'passing through the evaporating chamber, some of the walls of said chamber being made of suitable yielding material, and the other walls being tomparatively rigid.
13.- In a drying apparatus, the combina- :tion of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means in said condensing chamber, heating means to heat thedrying medium before it comes. into contact with the material being dried, means to support the material while passing through the evaporating chamber, some of the walls of said chamber being made of substantially impervious yiglding material, and the other walls being comparatively rigid. Q
14. In a drying apparatus, the combination of an evaporating chamber, a condens- 'ing chamber suitably connected wit-h the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passage from the condensing. chamber to the material bein the material while passing through the evaporating chamber, some of ,the Walls of said chamber being 'made of impervious yielding material, and the other Walls being comparatively rigid, a drivin -roller at'the discharge end, a receiving rofier at the discharge end, means forilriving'the receiving dried, means to, support roller, a supply roller at the supply end,
and means for putting 'a tension on the material at the supply end. I
15. in a drying apparatus, the combina-' tion of an evaporating-chamber, a condensing chamber suitably connected with the evaporating 7 chamber, condensing means- 'connected with said condensing chamber,
, heating means'toheat the drying medium 10 on its passage from the condensing chamber to the material being dried, means to support the material while passing through the evaporating chamber, some of the walls of said chamber being made of impervious yielding material, and the other Wallsvbeing comparatively rigid, a driving and holding device at each end of the evaporating chamberconsisting of a roller to hold the material, means for driving. said roller, and a disconnecting device between the lroller and said driving means, wherebythe, roller can turn in theu-everse directioma brake for the holding roller, and a drivingrollier. f
16. In a drying apparatus, the combinat-ioh -of an evaporating chamber, a condensing chamber suitably connected, with the evaporating chamber, condensing means connected with said condensing chamber,
v heating means to heat "the drying medium on its passage'from the condensing chamber to the material being dried, bearing surfaces to support the 'material while passing through the evaporating chamber, and electrical conductors connected with said bear ing surfaces and, grounding the same.
'17-. In a drying apparatus, the combination of an evaporating chamber, a condens-' ing chamber suitably connected with the evaporating chamber, condensing means 40 connected with said condensing chamber, heating means to heat the drying medium on its passage fromthe condensing chamber to the material bein dried, bearing surfaces to support the material while passing through the evapprating chamber, and electrical conductors connected with said bearing surfaces and grounding the same, some -:of the walls of said chamber being made of n im ervious yielding material, and the other wa ls being comparatively rigid.
18. In. adrying apparatus, the combination of an evaporating chamber, a condensing. chamber. suitably connected with the evaporating chamber, condensing means 5 connected with said condensing chamber,
heating means to heat the drying-medium beforeit comes into contact with the material being dried, bearing'surfaces to support the material while passing througlr'the evaporating chamber, and electrical con- V vdu'ctors connected with said bearing surfaces and rounding the same, a driving-and hold ing device at each end of the eva orat-ing chamber consisting of a roller to hol I the material, means for. driving, said roller, and a 'material being dried, bearing surfaces to support the material, while passing throu h disconnecting device between the roller and saiddrivingmeans, whereby the roller can turn in. the reverse direction, a brake for the holding roller, and a driving ro1ler.
19. In a drying apparatus, the combination of an evaporating chamber, .a condensing chamber suitably connected with the I evaporaing chamber, condensing means connected with said condensing chamber, heat-' ing means-to heat the drying medium on its passage from the condensing chamber to the material being dried, supporting devices tosupport the material while passing through the evaporating chamber, some of the walls of said chamber being made of impervious yieldingmaterial, and the, other walls being lined with-metal.
20. In a drying apparatus, the combination of an evaporating chamber, a condensing. chamber suitably connected with the evaporating chamber thereof, condensing .means connected with said condensing chamber, heatlng means to heat the.dry1ng medium before it comes into contact with the thel evaporating chamber, some of the wa is of said chamber being made of impervious yielding material, and the other walls being lined. with metal, the bearing surfaces being connected electrically with the metal lining,
and the metal lining being electrically grounded.
21. In a coating and drying apparatus,the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensin means connected with said condensing c hamber, heating means to heat the drying medium on its passage from the'condensing chamber to the material to be dried, means for coat-- ing the material with the coating substance, and for spreading it on said material, said coating and spreading means being inclosed in a c amber at the end of the evaporating chamber, and holding devices ateach end of. said evaporating chamber to maintain a tension on the material.
22. In a coating and drying machine, the combination of an evaporating chamber, a 115 condensing chamber suitably connected withthe evaporating chamber, condensing means connected with said condensing chamber,
heating means to heat the drying medium on its passage from the condensing chamber to the material to be dried, means for coating the material with the coating substance and for spreading iton said material, said coating and spreading means being inclosed in a chamber forming an extension of the eva orating chamber, movable covers for sai extension chamber, and holding devices at eachend of said evaporating chamber to maintain a tension on the material.
23. Ina coating and drying apparatus, the
the evaporating chamber, condensing means connected with said condensing chamber,
heating means to heat the drying medium before it comes into contact with the material to be dried, means at each end of the evaporating chamber for coating the material with the coating substance and for spreading iton said material, and holding and driving means at each end of said evaporating chamber.
'24. In a coating and drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means'in said condensing chamber, heating means to heat the drying medium before it comes into contact with the material to be dried, means to support the material while passing through the evaporating chamber, means at each end of theevaporating chamber for coating the material with the coating substance, and for spreading it on said material, said coating and spreading means being inclosed in a chamber forming an extension of the evaporating chamber at each end thereof, and holding and driving means ateach end of saidevaporating chamber.
25. In-a coating and drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chainber, heating means to heat the drying medium on its passage from the condensing chamber to the material to be dried, bearing surfaces to support the material While passing through the evaporating chamber, and electrical conductors connected with said bearing surfaces andgrounding the same, means for coating the material with the coating substance and for spreading 1t on said material, said coating and spreading means belng lnclosed in a chamber forming an extension of the evaporating .chainber, and holding devices at each endof-said evaporating chamber to maintain a tension on the material.
26. In a coating and drying apparatus, thecombination of an evaporating chamber,
'a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a receptacle to hold the condensed liquid, heating means. to heat the drying medium on its passage from the condensing chamber to the material to be dried, bearing surfaces to support the material while passing through the evaporating chamber and electrical conductors connected with said bearing surfaces and grounding the same, means at each end of the evaporating chamber for coating the material with the coating substance and forspreading it on said with the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on Its passage from the condensing chamber to the material to be dried, means to support the material while passing through the evaporating chamber, means for coating the material with the coating substance and forspreading it on said material, said coating and spreading means being in'closed in a chamber at the end of the evaporating chamber, and a removable drip tank in said last mentioned chamber to catch the surplus of the coating substance and adoor forming a substantially tight joint with said chamber thetank. I
28. In a drying apparatus, the combination of an evaporating chamber, a condensing chamber suitably connected with'the evaporating chamber, condensing means connected with said condensing chamber, heating means to heat the drying medium on its passage from the condensing chamber to the material being dried, means to support the material while passing through the evaporating chamber, inlet and outlet openings for the material in the evaporating chamber on the same level with each other and holding devices at each end of said evaporating chamberto maintain a tension on the material.
29. In a drying apparatus, the combinaT for the withdrawal of tion of an'evaporating chamber, a condcns-.
ing chamber suitably connected with the evaporating chamber, condensing means connected with said. condensing chamber, heating means to heat the drying medium on its passage from the condensing chamber tdthe material being dried, means to support the material while passing through the evapo rating chamber, inlet and outlet openlngs for the material in the evaporating chamber provided with spring pieces to bear against and inclose the material and, holding devices at each end of said evaporatingchamber to maintain a tension on the material.
3O. In a drying apparatus, the combination of an evaporating chan'ibcr, a condensing chamber suitably connected with the evaporating chamber, condensing means connected with said condensing chamber, a. rece tacle' to hold the condensed liquid, the con ensingtubes extending down substantially to the bottom of said receptacle,heatingmeans to heat the drying medium before it comes into contact with the material benam'eS to this specification, in the presence 1ng dried, means to support the material of two subscribing witnesses.
Wh11e passing through the evaporatin T 'GEORGE M chamber, and holding devices at each e115 3 WILLIAM M. GROSVENOR.
5 0i Said evaporating chamber to maintain av \Vitnesses: tension on the material. T. E; RAFTERYQ In testimony whereof, We have signed our EDWIN SEGER.
Coriectio ns in Letters" Patent No. 979,731.
It-is hereby certified that in Letters'Patent No. 979,781, granted December 27, I 1910, upon the application of George H. May, of Newburgh, New York, and William M Grosven'or, of Grantwood, New Jersey, for'an improvement in Drying v Apparatus, errors appear in the printed specification requiring correction follows: Page 4, line 127, the word spearing should read spreading, andpag line 36, the words and syllable S and from the driving vand holding de-: should I stricken outand the words sa'id condensing chamber; a receptacle be inserted insteadfi and that the said Letters Patent should be read with these corrections therein thati the Blame. may conform to the record of the case in the Patent Ohio er.
r Signed and sealed this 3th day of August,A. D., 1911.
[S L] .E.'B.-MOORE,
Commisgioner of Patents.
it comes into contact with the material benam'eS to this specification, in the presence 1ng dried, means to support the material of two subscribing witnesses.
Wh11e passing through the evaporatin T 'GEORGE M chamber, and holding devices at each e115 3 WILLIAM M. GROSVENOR.
5 0i Said evaporating chamber to maintain av \Vitnesses: tension on the material. T. E; RAFTERYQ In testimony whereof, We have signed our EDWIN SEGER.
Coriectio ns in Letters" Patent No. 979,731.
It-is hereby certified that in Letters'Patent No. 979,781, granted December 27, I 1910, upon the application of George H. May, of Newburgh, New York, and William M Grosven'or, of Grantwood, New Jersey, for'an improvement in Drying v Apparatus, errors appear in the printed specification requiring correction follows: Page 4, line 127, the word spearing should read spreading, andpag line 36, the words and syllable S and from the driving vand holding de-: should I stricken outand the words sa'id condensing chamber; a receptacle be inserted insteadfi and that the said Letters Patent should be read with these corrections therein thati the Blame. may conform to the record of the case in the Patent Ohio er.
r Signed and sealed this 3th day of August,A. D., 1911.
[S L] .E.'B.-MOORE,
Commisgioner of Patents.
It is hereby certified that in Letters Patent No. 979,781, granted December 27, 1910, upon the application of George H. May, of Newburgh, New York, and William M. Grosvenor, of Grantwood, New Jersey, for an improvement in Drying A aratus errors a ear in the rinted s eeilication re uirin correctiodas a P P 1 1 follows: Page 1, line 127, the word spearing should read spreading, and page 7,
line 36, the words and syllable fand from the driving and holding deshould be stricken out and the words said condensing char/7607', a receptacle be inserted instead; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.
Signed and sealed this 8th day of August, A. 1)., 1911.
[SEAL] E. B. MOORE,
Commissioner of Patents.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061906A (en) * 1957-10-01 1962-11-06 Mount Vernon Mills Inc Apparatus and process for stabilizing industrial fabrics
US3244552A (en) * 1961-03-08 1966-04-05 Du Pont Process for coating film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061906A (en) * 1957-10-01 1962-11-06 Mount Vernon Mills Inc Apparatus and process for stabilizing industrial fabrics
US3244552A (en) * 1961-03-08 1966-04-05 Du Pont Process for coating film

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