US1779611A - Continuous-web-drying machine - Google Patents
Continuous-web-drying machine Download PDFInfo
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- US1779611A US1779611A US374063A US37406329A US1779611A US 1779611 A US1779611 A US 1779611A US 374063 A US374063 A US 374063A US 37406329 A US37406329 A US 37406329A US 1779611 A US1779611 A US 1779611A
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- web
- conveyor
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
Definitions
- the invention relates to a continuous webdrying machine including acasing through which a web of paper, coated on one side, may be progressively moved and in which said web is dried during its progress.
- the chief object of the invention' is to enable the web to be progressively moved through the casing in a sinuous path which is much longer than the casing, so that the floor space occupied by the casing may be reduced to a minimum, to cause the coated side of the encased portion of the web to contact only with air throughout its entire extent, so that the coating cannot be injured by contact with any solid surface, and to be dried by the forcible impingement of air jets againstits coated side.
- Another object is to enable the leading end of the web to be conveniently passed through the machine at'the commencement of the drying operation.
- Figure 1 is a longitudinal vertical section, showlng a drying machine embodying the invention, parts of the machine being broken away to reduce the length of the figure.
- Figure 2 is a section on line 22 of Fig ure 1.
- Figure 3 is a section on line 33 of Fig-.
- Figure 4 is a fragmentary side View, showing morein detail conveyor tensioning means shown by Figure 1.
- FIG. 5 is an enlargement of a portion of Figure 1, and shows the leading end ofa we
- the same reference characters indicate the same parts in all of the figures.
- FIG. 12 designates a casing having an inlet 13 for a web 14:.
- An endless conveyor is supported by rolls in such manner that the conveyor moves in a sinuous path and has at least two oppositely facing elongated parallel stretches 16 and 17, adapted to support and feed in opposite directions a sinuous encased portion of a continuous web 18 of v coated paper.
- Figure 1 shows the conveyor 1929. Serial No. 374,063.
- the web-supporting side of the encased conveyor portion faces an air space 8 ( Figure 1) extending from end to end of the stretches 16 and 17
- the web 18 is placed on the conveyor with its coated side facing outward and contacting only with air in the space .9, sothat the coating cannot be marred by contact with any solid surface.
- the machine comprises drying means for causing the forcible impingement of jets of impingement of drying air simultaneously on the coated sides of the sinuous web portions supported by the conveyor stretches 16 and 17, said means including a blower designated as a whole by 19, and perforated trunks 20 and 21, communicating with the blower and located at opposite sides of the two stretches 16 and 17,and trunks having air outlets or orifices 22 ( Figure 3)
- the trunk 20 delivers air jets downward through the air space .9 on the coated side of the encased web portion on the stretch 16, and the trunk 21 delivers air upward through said air space on the coated si7de of the encased web portion on the stretch
- the conveyor preferably includes a delivering lower stretch 23, which extends through an outlet 24 in one end of the casing and is adapted to support, feed, and deliver an extension of the sinuous portion of the web, the delivered portion being designated by 18*.
- a conveyor which includes the several stretches 16, 17 and 23 may be supported and guided by the series of rolls 25 and 25, shown by Figure 1, one or more of said rolls being power driven.
- I provide a deflector which is preferably pneumatic and includes a conduit 26, communicating with the blower 19 and havlngv a 1 discharge nozzle 27 arranged to blow the leading end of the web 18 shown by Figure 5, against a curved portion of the conveyor, and cause said end to follow the stretch 17.
- the deflector 28 detaches the web from the stretch 17 at a point near said guide rolls, and guides the web on to the delivering stretch 23, with its coated side facing the trunk 21.
- the deflector supports a portion of the web out of contact with the portion of the conveyor supported by the rolls 25 the exposed side of the deflector-supported portion of the web contacting only with air, as presently described.
- the coated side'of the web is caused to face the perforated end 21 of the trunk 21, so that drying air impinges thereon.
- the deflector 28 is preferably a curved smooth surfaced plate having a knife edge 29, adapted to detach the web from the stretch 17.
- the web-supporting side of the delivering conveyor portion 23 faces an air space 8, which is a continuation of the space 8, and extends from the knife edge 29 to the outlet 24, as shown by Figure 1.
- the entire encased portion of the web between the inlet 13 and the outlet 24 contacts only with the air, so that it is dried without being marred or affected in any way by contact with any solid surface.
- the trunks 20 and 21 are preferably branches of a main trunk 30, and each is preferably provided with a valve 31, whereby the flow of air may be regulated or shut off. Any suitable means may be provided for heating air supplied to the blower to facilitate drymg.
- the tensioning means shown diagrammatically by Figure 1, and in detail by Figure 4, said means including a pair of spaced apart idle rolls 32, journaled in fixed bearings 33, and bearing on one side of a stretch of the conveyor, preferably the stretch 17, an idle takeup roll 34, bearing on the opposite side of the stretch, and movable in the space between the rolls 32, and devices for adj usting the takeup roll and mamtammg 1t m any adlusted p 051mm sald conduit communicating with the blower and devices including bearings 35, movable in fixed guides 37, and adjusting screws 38, engaged with the guides and bearings, as shown by Figure 4.
- the arrangement is such that the rolls 32 and 34 cooperate in forming in the conveyor stretch 17 a loop 17 and thereby taking up looseness.
- the depth of the loop is variable by adjustments of the takeup roll.
- the delivered web portion 18 is wound or rolled on a winding spindle 39, the wound portion being severed and removed when the roll is of sufficient size.
- I provide means for loosely accumulating the web between the outer guide roll 40 and the winding spindle, said means including a reciprocating looper, composed of a pair of idle rolls 43, between which the web portion 18 passes loosely, an oscillatory frame 44, adapted to swing on a center 45, the rolls 43 being carried by the frame, and means, as a crank 46 and pitman 47, for oscillating the frame.
- the rolls 43 are thus reciprocated sidewise.
- AWeb-drying machine comprising an endless roll-supported conveyor including at least two oppositely facing stretches adapted to support and feed in opposite directions portions of a continuous web of coated paper withthe coating thereof exposed, drying means for causing the impingement of air simultaneously on the coated sides of said web portions, said means including a blower, and perforated trunks communicating with the blower and located at opposite sides of the two conveyor stretches, and a pneumatic deflector adapted to change the direction of the advancing end of a web portion passing from one of said conveyor stretches to the other, said deflector including an air ering stretch, said conveyor being adapted to support and feed a sinuous portion of a web of coated paper with only the coated side thereof exposed, drying means for causing the impingement of, air on the exposed side of the sinuous web portion, a webde flector adapted to change the direction of a web portion passing from the upper to the intermediate stretch of the conveyor, and a web deflector adapted to change the direction of a web portion passing from the intermediate to the
- a Web-drying machine comprising a casing, an endless web conveyor, means supporting and progressively moving the conveyor and a coated web carried thereby in a sinuous path through the casing, sot-hat the encasedportion of the web is longer than the casing, the arrangement being such that one side of the encased web portion is exposed to contact only with air throughout its entire extent, so that a coating'thereon may be dried without contact with a solid surface, and
- a web-drying machine comprising a casing having at one end a web inlet, and at the opposite end a web out-let, an endless web conveyor, means supporting and pro gressively moving the conveyor and a coated web carried thereby, in a sinuous path through the casing, so that the encased portion of the web is longer than the distance between the inlet and the outlet, a portion of the conveyor being alined with the easing inlet, and another portion alined with and extending through the casing outlet, so that a web inserted in the inlet is deposited on the conveyor and conducted thereby through the casing and the outlet, the arrangement being such that one side of the encased portion of the web is exposed tocontact only with air throughout its entire 3 extent, and means for causing the forcible impingement of air jets on said exposed. side, to drya coating thereon, said coating being dried without contact with any solid surface,
- a web-drying machine comprising acasing, an endless web conveyor, rolls support- 'ing and progressively moving the conveyor and a coated web carried thereby, in a sinu- -ouse path through the'casing, a curved deto j-contact only with air throughout its entire extent, and means for causing the forcible impingement of air-jets on said exposed side of the web to dry a coating thereon, said coating being dried without contact with any solid surface.
- a web-drying machine comprising a casing, an endless web conveyor, rollssupporting and progressively moving the conveyor in the casing, and providing the conveyor and the encased portion of a coated web carried thereby with sinuous portions includonly with air throughout its entire extent,
- said means including a blower and two perforated trunks communicating with the blower and extending substantially parallel with the stretches of the encased web portion, one trunk adapted to direct air jets against the exposed side of one of said stretches, while the other trunk is adapted to direct air jets against the exposed side of the other stretch, the sinuous form of the said conveyor and web portions permitting the drying of the encased portion of the web in a casing whose length is less than that of said encased portion.
- a web-drying machine comprising a casing, an endless web conveyor, rolls supporting and progressively moving the conveyor in the casing and arranged to provide the conveyor and the encased portion of the coated web carried thereby with sinuous pertions including substantially parallel upper and intermediate stretches, and delivering stretches substantially parallel therewith and .cluding the delivering stretch thereof, said means including a blower and two perforated trunks communicating with the blower and extending substantially parallel with the stretches of the encased web portion, one trunk adapted to direct air jets against the exposed side of the-upper stretch, while the other trunk is adapted to direct airjets simultanenously against the exposed side of the intermediate stretch and of the delivering stretch.
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Description
Oct. 28, 1930; c. J. MERRILL I CONTINUOUS WEB DRYING MACHINE Filed June 27, 1929 Izwzziiv Patented Oct. 28, 1930.
PATENT OFFICE CABLE J. MERRILL, OF PORTLAND, MAINE CONTINUOUS-WEB-DRYING MACHINE Application filed June 27,
The invention relates to a continuous webdrying machine including acasing through which a web of paper, coated on one side, may be progressively moved and in which said web is dried during its progress.
The chief object of the invention'is to enable the web to be progressively moved through the casing in a sinuous path which is much longer than the casing, so that the floor space occupied by the casing may be reduced to a minimum, to cause the coated side of the encased portion of the web to contact only with air throughout its entire extent, so that the coating cannot be injured by contact with any solid surface, and to be dried by the forcible impingement of air jets againstits coated side.
Another object is to enable the leading end of the web to be conveniently passed through the machine at'the commencement of the drying operation.
Other objects will appear from the following description.
Of the accompanying drawings forming a part of this specification,
Figure 1 is a longitudinal vertical section, showlng a drying machine embodying the invention, parts of the machine being broken away to reduce the length of the figure.
Figure 2 is a section on line 22 of Fig ure 1.
Figure 3 is a section on line 33 of Fig-.
Figure 4 is a fragmentary side View, showing morein detail conveyor tensioning means shown by Figure 1.
Figure 5 is an enlargement of a portion of Figure 1, and shows the leading end ofa we The same reference characters indicate the same parts in all of the figures.
12 designates a casing having an inlet 13 for a web 14:. An endless conveyor is supported by rolls in such manner that the conveyor moves in a sinuous path and has at least two oppositely facing elongated parallel stretches 16 and 17, adapted to support and feed in opposite directions a sinuous encased portion of a continuous web 18 of v coated paper. Figure 1 shows the conveyor 1929. Serial No. 374,063.
conventionally by a relatively thin line, and the web by a thicker line.
The web-supporting side of the encased conveyor portion faces an air space 8 (Figure 1) extending from end to end of the stretches 16 and 17 The web 18 is placed on the conveyor with its coated side facing outward and contacting only with air in the space .9, sothat the coating cannot be marred by contact with any solid surface.
The machine comprises drying means for causing the forcible impingement of jets of impingement of drying air simultaneously on the coated sides of the sinuous web portions supported by the conveyor stretches 16 and 17, said means including a blower designated as a whole by 19, and perforated trunks 20 and 21, communicating with the blower and located at opposite sides of the two stretches 16 and 17,and trunks having air outlets or orifices 22 (Figure 3) The trunk 20 delivers air jets downward through the air space .9 on the coated side of the encased web portion on the stretch 16, and the trunk 21 delivers air upward through said air space on the coated si7de of the encased web portion on the stretch The conveyor preferably includes a delivering lower stretch 23, which extends through an outlet 24 in one end of the casing and is adapted to support, feed, and deliver an extension of the sinuous portion of the web, the delivered portion being designated by 18*. I
For convenience I call the stretch 16 the upper stretch and the stretch 17 the intermediate stretch, the latter being between the upper stretch 16 and the lower delivering stretch 23.
A conveyor which includes the several stretches 16, 17 and 23 may be supported and guided by the series of rolls 25 and 25, shown by Figure 1, one or more of said rolls being power driven.
To change the direction of the leading end portion of the web 18, when it is passing from the stretch 16 to the stretch 17 over a curved portion of the conveyor backed by a roll 25,
I provide a deflector which is preferably pneumatic and includes a conduit 26, communicating with the blower 19 and havlngv a 1 discharge nozzle 27 arranged to blow the leading end of the web 18 shown by Figure 5, against a curved portion of the conveyor, and cause said end to follow the stretch 17.
To prevent the coated side of the web from touching the guide rolls 25 I provide a curved deflector 28, which detaches the web from the stretch 17 at a point near said guide rolls, and guides the web on to the delivering stretch 23, with its coated side facing the trunk 21. The deflector supports a portion of the web out of contact with the portion of the conveyor supported by the rolls 25 the exposed side of the deflector-supported portion of the web contacting only with air, as presently described. The coated side'of the web is caused to face the perforated end 21 of the trunk 21, so that drying air impinges thereon. The deflector 28 is preferably a curved smooth surfaced plate having a knife edge 29, adapted to detach the web from the stretch 17.
The web-supporting side of the delivering conveyor portion 23 faces an air space 8, which is a continuation of the space 8, and extends from the knife edge 29 to the outlet 24, as shown by Figure 1. The sinuous portion of the web backed by the deflector 28 and supported by the delivering portion 23 of the conveyor, therefore contacts only with air in the air space 8.
the entire encased portion of the web between the inlet 13 and the outlet 24 contacts only with the air, so that it is dried without being marred or affected in any way by contact with any solid surface.
The trunks 20 and 21 are preferably branches of a main trunk 30, and each is preferably provided with a valve 31, whereby the flow of air may be regulated or shut off. Any suitable means may be provided for heating air supplied to the blower to facilitate drymg.
To tension the endless conveyor, or take up slackness therein, I provide the tensioning means shown diagrammatically by Figure 1, and in detail by Figure 4, said means including a pair of spaced apart idle rolls 32, journaled in fixed bearings 33, and bearing on one side of a stretch of the conveyor, preferably the stretch 17, an idle takeup roll 34, bearing on the opposite side of the stretch, and movable in the space between the rolls 32, and devices for adj usting the takeup roll and mamtammg 1t m any adlusted p 051mm sald conduit communicating with the blower and devices including bearings 35, movable in fixed guides 37, and adjusting screws 38, engaged with the guides and bearings, as shown by Figure 4. The arrangement is such that the rolls 32 and 34 cooperate in forming in the conveyor stretch 17 a loop 17 and thereby taking up looseness. The depth of the loop is variable by adjustments of the takeup roll. There may be similar tensioning means at other portions of the conveyor.
The delivered web portion 18 is wound or rolled on a winding spindle 39, the wound portion being severed and removed when the roll is of sufficient size. To cool the portion l8 before rolling, I guide it in a predetermined path, by rolls 40, so that it passes beside a perforated trunk 41, supplied by a blower 42 with cool air, either at atmospheric temperature or artifically cooled, the air impinging on the web at a point somewhat remote from the winding spindle.
To prevent communication of the strain or tension exerted on the web by the rotation of the winding spindle, to the portions of the web associated with the conveyor and with the drying means within the casing 12, I provide means for loosely accumulating the web between the outer guide roll 40 and the winding spindle, said means including a reciprocating looper, composed of a pair of idle rolls 43, between which the web portion 18 passes loosely, an oscillatory frame 44, adapted to swing on a center 45, the rolls 43 being carried by the frame, and means, as a crank 46 and pitman 47, for oscillating the frame. The rolls 43 are thus reciprocated sidewise.
Below the rolls 43 is an endless secondary conveyor 49, carried by rolls 5(). The upper v stretch of said conveyor is arranged to re- It will now be seen that the coated side of ceive the web dropping from the rolls 15. The reciprocation of the rolls 43 and the movement of the upper stretch of the conveyor 49, in the direction indicated by the arrow, causes the accumulation of the web portion 18 on said upper stretch in loose plaits or folds, which are opened by the pull exerted on the web by the Winding spindle 39.
I claim:
1. AWeb-drying machine comprising an endless roll-supported conveyor including at least two oppositely facing stretches adapted to support and feed in opposite directions portions of a continuous web of coated paper withthe coating thereof exposed, drying means for causing the impingement of air simultaneously on the coated sides of said web portions, said means including a blower, and perforated trunks communicating with the blower and located at opposite sides of the two conveyor stretches, and a pneumatic deflector adapted to change the direction of the advancing end of a web portion passing from one of said conveyor stretches to the other, said deflector including an air ering stretch, said conveyor being adapted to support and feed a sinuous portion of a web of coated paper with only the coated side thereof exposed, drying means for causing the impingement of, air on the exposed side of the sinuous web portion, a webde flector adapted to change the direction of a web portion passing from the upper to the intermediate stretch of the conveyor, and a web deflector adapted to change the direction of a web portion passing from the intermediate to the delivering stretch.
3. A Web-drying machine comprising a casing, an endless web conveyor, means supporting and progressively moving the conveyor and a coated web carried thereby in a sinuous path through the casing, sot-hat the encasedportion of the web is longer than the casing, the arrangement being such that one side of the encased web portion is exposed to contact only with air throughout its entire extent, so that a coating'thereon may be dried without contact with a solid surface, and
means for causingthe forcible impingement of air ets on said exposed side to dry'a coating thereon.
4. A web-drying machine comprising a casing having at one end a web inlet, and at the opposite end a web out-let, an endless web conveyor, means supporting and pro gressively moving the conveyor and a coated web carried thereby, in a sinuous path through the casing, so that the encased portion of the web is longer than the distance between the inlet and the outlet, a portion of the conveyor being alined with the easing inlet, and another portion alined with and extending through the casing outlet, so that a web inserted in the inlet is deposited on the conveyor and conducted thereby through the casing and the outlet, the arrangement being such that one side of the encased portion of the web is exposed tocontact only with air throughout its entire 3 extent, and means for causing the forcible impingement of air jets on said exposed. side, to drya coating thereon, said coating being dried without contact with any solid surface,
and delivered from vthe casing through said outlet. 7
5. A web-drying machine comprising acasing, an endless web conveyor, rolls support- 'ing and progressively moving the conveyor and a coated web carried thereby, in a sinu- -ouse path through the'casing, a curved deto j-contact only with air throughout its entire extent, and means for causing the forcible impingement of air-jets on said exposed side of the web to dry a coating thereon, said coating being dried without contact with any solid surface.
6. A web-drying machine'comprising a casing, an endless web conveyor, rollssupporting and progressively moving the conveyor in the casing, and providing the conveyor and the encased portion of a coated web carried thereby with sinuous portions includonly with air throughout its entire extent,
and drying means causing the forcible im-. pingement of air on the exposed side of the encased web portion to dry a coating thereon, said means including a blower and two perforated trunks communicating with the blower and extending substantially parallel with the stretches of the encased web portion, one trunk adapted to direct air jets against the exposed side of one of said stretches, while the other trunk is adapted to direct air jets against the exposed side of the other stretch, the sinuous form of the said conveyor and web portions permitting the drying of the encased portion of the web in a casing whose length is less than that of said encased portion.
7. A web-drying machine comprising a casing, an endless web conveyor, rolls supporting and progressively moving the conveyor in the casing and arranged to provide the conveyor and the encased portion of the coated web carried thereby with sinuous pertions including substantially parallel upper and intermediate stretches, and delivering stretches substantially parallel therewith and .cluding the delivering stretch thereof, said meansincluding a blower and two perforated trunks communicating with the blower and extending substantially parallel with the stretches of the encased web portion, one trunk adapted to direct air jets against the exposed side of the-upper stretch, while the other trunk is adapted to direct airjets simultanenously against the exposed side of the intermediate stretch and of the delivering stretch. v
In testimony whereof I have aflixed my signature.
CAR-LE J. MERRILL.
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US374063A US1779611A (en) | 1929-06-27 | 1929-06-27 | Continuous-web-drying machine |
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US374063A US1779611A (en) | 1929-06-27 | 1929-06-27 | Continuous-web-drying machine |
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US1779611A true US1779611A (en) | 1930-10-28 |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462380A (en) * | 1946-01-05 | 1949-02-22 | Andrews & Goodrich Inc | Method and apparatus for drying web material |
US2554239A (en) * | 1947-11-07 | 1951-05-22 | Champlain Company Inc | Web drying system |
US2582241A (en) * | 1946-05-22 | 1952-01-15 | Dungler Julien | Drying machine for fabrics |
US2641850A (en) * | 1949-02-16 | 1953-06-16 | Dungler Julien | Apparatus for continuously treating lengthy cellulose material |
US2741978A (en) * | 1949-10-03 | 1956-04-17 | Internat Machinery Corp Sa | Apparatus for canning sardines and the like |
US2864176A (en) * | 1956-04-07 | 1958-12-16 | Svenska Flaektfabriken Ab | Web-guiding apparatus |
DE1237943B (en) * | 1961-06-06 | 1967-03-30 | Grace W R & Co | Hot air tunnel |
US3318222A (en) * | 1964-06-08 | 1967-05-09 | Gen Aniline & Film Corp | Paper guiding and evaporation control in moist reproduction machines |
US4011663A (en) * | 1975-08-06 | 1977-03-15 | Synchro Systems, Inc. | Apparatus for drying fabrics |
US8061055B2 (en) * | 2007-05-07 | 2011-11-22 | Megtec Systems, Inc. | Step air foil web stabilizer |
-
1929
- 1929-06-27 US US374063A patent/US1779611A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462380A (en) * | 1946-01-05 | 1949-02-22 | Andrews & Goodrich Inc | Method and apparatus for drying web material |
US2582241A (en) * | 1946-05-22 | 1952-01-15 | Dungler Julien | Drying machine for fabrics |
US2554239A (en) * | 1947-11-07 | 1951-05-22 | Champlain Company Inc | Web drying system |
US2641850A (en) * | 1949-02-16 | 1953-06-16 | Dungler Julien | Apparatus for continuously treating lengthy cellulose material |
US2741978A (en) * | 1949-10-03 | 1956-04-17 | Internat Machinery Corp Sa | Apparatus for canning sardines and the like |
US2864176A (en) * | 1956-04-07 | 1958-12-16 | Svenska Flaektfabriken Ab | Web-guiding apparatus |
DE1237943B (en) * | 1961-06-06 | 1967-03-30 | Grace W R & Co | Hot air tunnel |
US3318222A (en) * | 1964-06-08 | 1967-05-09 | Gen Aniline & Film Corp | Paper guiding and evaporation control in moist reproduction machines |
US4011663A (en) * | 1975-08-06 | 1977-03-15 | Synchro Systems, Inc. | Apparatus for drying fabrics |
US8061055B2 (en) * | 2007-05-07 | 2011-11-22 | Megtec Systems, Inc. | Step air foil web stabilizer |
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