USRE23535E - Sheetsxsheet i - Google Patents

Description

APPARATUS FOR DRYING WARP AND THE LIKE Original FiledMay '7, 1948 2 SHEETS-SHEET 1 INVENTOR PAUL R. R035 BIY ATTO NEYS g- 5, 1952 P. R. ROSE Re. 23,535

APPARATUS FOR DRYING WARP AND THE LIKE Original Filed May 7, 1948 2 SHEETSSHEET 2 VINVEN'VTOR PAuL R. Ross 7 BY I 44M flyr-M ATTORNEYS Reissued Aug. 5, 1952 UNITED STATES PATENT OFFICE 7 23,535 V item-truss marine AND THE LIKE Paul K; Rose, Orange, hi, I, to Bachmann- Uxbridge Worsted Corporation, U'xbridge', Mass, a corporation of Delaware Original No. 2,541,383, datedtFebruary lii, 1951,

Serial No. 25,565, May 7, 1943,. Application for reissue December 13', 1951, Serial No. 261,427

Claims (013L159) Matter enclosed in brackets I: appears pa tentlbiit fitters pm or this reissue specification; matter printed in italics inaim the additions made t'y reissue.

An object of the, invention is, to provide a dry;

ing' unit adapted for drying sized webs and vthe like, which will oecupy a minimum of space on amill floor and throughwhich a web can be, run o arm ronte wh ch s c pa le, 01.- mg rapidly when the travel of the web is stopped foranyreason. v H Another object of the invention is to provide mea s. for efliciently using supply of drying air to dry a web of textile material,

Another object of the invention is to provide improved means for directing a tempering air to and through a web of textilematerial. V Y

- Another object of the inventioni tocontrol the stretchof the web whileit is being dried and prevent the transfer of size from and to the web. v a .4 I

Other objects of the invention willbein part' obvious or inpart pointed out hereinafter The invention accordingly consists in the. feattures of construction, combinations of elements, arrangements of arts, and inlthe several, steps and relation anatraer of each of said steps to one or more of the others. thereof, all as will be. pointed out inthe following description, and the scope of the application of which will be indicated in the following claims, V a

The invention will best be understoodif thev following description is read in connection wit the drawings; in which,

Figure 1 is a side elevation, partly in cross section with some partsv broken away;

Figure 2 is a; front elevation; and.v 1, Figure'B is a detail of the discharge ports of the headers. v- .i .l

' Figure 4; is a" detail or, ainodifl'ed form of'discharge, ports of theheafd'ers;

, In th e m nt o e" w'ent 0 d scl s d" herein a closed chamber It isl 'providedinto which a web w of textilematerialis "introduced through the port. in therear wall and from which the,

web w is discharged through the air inlet port h -fr nt a l- BefQIQ n r nscl l r 0 theweb passes; through a sizing; I bath and rolls; icat d e al y y h ni m l W c os r I0 pr id p n, el n at d single header 20 having in its upper surface 2 2 a'series of air ports 80." to be more fully deso! e ,...a d, a dou le header 24 w hissubstantial t wshapcd andha in its opp riacesjfi and 28 respectively a series of'ports 80. Heade 2.0 ext nds upwa from jus below tranee portlz toward, the,top of the front wall of plos ure lll, and header lkextends downwardly andf tw dl froma ia e t e n er a d ar: rowerend of header 20 withits widerend adjacent the inner end of header 20. Thusthe headers. 24] and 24 are angularly related and so that an initial long reach and a plurality of shorter reaches of thelwebmaybe provided in a relatively small closure. Two rollers 3|! and 3| areprovided in spaced relation longitudinally of header 20,,beyond thejnner end of single header 2 0, and two rollers 32 and 33 are provided in spaced relation longitudinally of header 24, beyond the narrow end of double header 24, and the web w is led from the sizing bath IE through entranceport [2 through the long reach-to and around rollers 3|] and 3| in a path parallel and adjacent to the upper surface of header 20, and thenaround rollers 32 and 33 and through two shorter reaches parallel to the opposite surfaces of header 24.. The web is thus divided between the two rollers,30 and 3 the part passing over rollers 30 and 32 being separated or split from the part passing over rollers 3| and 33 all the way from the sizing bath tothe single roller 34 which is positioned below the wider end of header 24 and receives and reunites the web after it has passedfrom rollers 32 and 33 over the air ports 28. From single roller 34 the web travels back around roller 35 and out of air inlet port l4 in.,.the front wall of casing Ill, thus moving through and counter to the entering strearnof air, which thus serves to cool the web before it leavescasing' HI, and thus eliminating the objectionable steam andvaporgivenofi by thesiz'edweb onl'eaving' drying units for slashers of'theprior artjtypes. H

,Within closure |0 an airheating chamber 43 is provided communicating with a chamber 42 housing. air impeller or fan means 44, and having the discharge port 46 coinmunio'atingwith single header 2|]. Theair is distributed within header 20 and discharged therefrom as will be described. In the entrance'port qc ofl chamber ll! there is provided a's'eries of vanes or dampers d by which the air flow into chamber 40 may be controlled. The vanes or dampers. may be connected to a plunger p controlled by a solenoid motor S. These and other dampers and solenoid motors referred to herein by similar reference characters are not further described since they are well known and commercially available and no claim is made to them per se.v

Above the single header 2| achamber 50 is provided within closure I0, said chamber being open at the bottom and housing the air impeller means or fan 62 which communicates through port 6201, with the air heating chamber 54 leading to the wider end of double header 24, and the air impeller means 65 positioned between fan 62 and the end wall of closure loin which is provided the outlet ports 66.

The headers 20 and 24 and duct-64 extend substantially the full width of closure l and it will reach of the web. It then enters header 24 and discharged so that it contacts evenly two shorter reaches of the web, after which it is ad- 63, which in turn communicates with the duct jacent to chamber 40 and enters it to be recirof headers and 24. This even distribution is f promoted by the taper of the headers and the be understood that air from single header 2|, after passing through web w, rises toward and-is directed to chamber 50, where the increment that has passed through the wettestpart of the web will be discharged from closure In through air impeller 65 and outlet ports 66 and the remainder will be impelled through airheating chamber 63 to the double header 24. From the double header 24 air discharged through the two series of sports 26 and 28 flows back, under single header 20 to chamber 40 and the above described air flow cycle is repeated, an increment of the air being dicharged from closure In during each cycle, as has been described, and new air being continually supplied into closure ID through air inlet port l4.

In the front of closure [0, preferably substantially on a levelwith chamber 40, a vestibule III is provided in communication with the air external to closure In through port 14. The inner wall of vestibule 10 comprises the ports- 12 and 14 facing toward the inlet of chamber 40. Lower port 72 is controlled by vanes or dampers d and upper port 14 is controlled by vanes or dampers 01 both conveniently attached to control plunger p which may be controlled by solenoid s'.

10 will be heated by it. When vanes or dampers 14 are closed air will pass-into chamber 10 through the lower port I2 of the inner wall of vestibule 10 and will not come into contact with 'heater l6, and will thus have the temperature of the air external to chamber It.

Suitable known means maybe employed for actuating the web to travel at a plurality of different speeds, as for example at high speed, and at very low speed known in the trade as at crawl; for stopping the warp altogether and for starting and stopping the air impeller means and controlling the vanes or dampers controlling the air flow to the air heating means, as for ex ample through suitable electric circuits (not shown). When the web is travelling at full speed inlet port 12 is desirably closed and ports 14 and 48 open; and heated air continuously circulated, and distributed against the web through headers 20 and 24. r

When the web is stopped ports 14 and 48 are closed and port 12 is opened causing air at room temperature to flow through the closure l0- and baflie and port means to be described. These means also coact to provide a gentle even flow of air into contact with the web from along the full length and width of the ported surfaces of the headers. l

The air is discharged fromheaders 2!! and 24 through ports 80 which are disposed along the upper surface of header 2D and along both the upper and lower surfaces of header 24, each port being in the form of a narrow opening extending laterally throughout substantially the full width of-the header, as shown in Figure 2. Ports 80 are made small enough to insure that the air in the header will not issue only from-a few of these ports but will fill the header and issue from all the ports 80 in streams of substantially equal volume. Each discharge port-has associated with it 'a laterallyextending bafile 82 extendin over the port and bentback at right angles at a distance from the port greater than the 'widthof the port. Thus air passing 'out'of a port 80 is deflected and its direction of flow is reversed and its speed slowed down. The direction of flow is again reversed when the air is deflected by the upper surface of the header between the ports, and flows toward the web w through-the space between adjacent baffle members; The

' space between the front of one-baille member and the rear of the adjacent member is made greater than that between the port and the bent over end of the baflle so that the speed'of the air is again-reduced This double reversing-of the direction of flow and the twojsta'ge slowing down of the air flow serves to effectively prevent'and reduce turbulence and to equalize air flow across the width of the header even though it may have been introduced into the'header under irregular distribution so that the air "contacts the web with a smooth gentle even flow and doesnot stretch the web or cause the individual'threads to contact and roll around each other Whenthe threads or yarns comprising'ai'web are caused, after being treated with a sticky substance such as sizing material, to contact and cross with other threads or yarnsof the web theytend :to adhere to one another thus making the subsequent processing of the web extremely diflicult, After'th'e sizing step theweb is 'run thrQugh a comb orreed before being wound upon 'atloom beam and when threads ,oriyarn's comprising the web are stuck togetheritbecomes very difficult if not impossible to run theweb' 'through ,a combasesportions, and this pressure and consequent velocity variations have been heretofore very'troublesome.-- Oneof the deficiencies of prior art devices'is that in order to prevent thedrying air employed from causing the sized individual threads or yarns of a web to be forced into' contact or crossed with one another by pressure and velocity variations of the drying air and thus stuck together they have employed an insufficient volume ofdrying air to do an efilcient job-of dryingt The device disclosed herein,.due to its'ability to reduce turbulencesa-nd deliver the drying air-to the Web with a smoothgentle flow, has the important advantage that it may be employed to deliver a sufficient volume of drying air. to effectaspeedy and uniform drying of the web.

As shown in Figures 1 and 3 the ports 80 are defined bythe bafile members 82 each of which comprises an inner imperforate portion 84 or first part defining a header surface, a portion 88 or second part extending substantially atright angles to portion 84 fromone end of portion 84 and defining oneside of a port 80, a portion 85. or third part, extending substantially at right angles to portion 84 from the other end of portion 84' and substantially parallel to portion 88 but longer than 88, a, portion substantially at right angles to portion 88 and thus substantially parallel to portion 84 but extending in the opposite direction, and a portion 92 bent back at right angles to portion 90 and thus substantially parallel to, although shorter than, portion 86. The members 82 are arranged in overlapping relation so that portion 88 of one member and portion 86 of the next member define between thema port 80, and the portion 9-0 connected to saidportion 86 projects over the port at a distancetherefrom. The adjoining portions 86 and 88 of two bafile members SZ thus, define a port 80 which'is elongated and opens into achannel ,94 which is wider than port 80, preferably on the order of twice thewidth of port 80. From channel'94 the air, after having been reversed indirection of flow by striking against portions 90 and 92, passes into a channel 96, which is of greater area than channel 94 being preferably on the order of from one-half again to twice as wide. as channel 94. FromchannelSE the air passes to, the web, after having been again reversed in direction by striking against'portions 84 and 88 of the adjacent member 82. I

In Figure 4 a modification of the air port structure is shown comprising two'sets of angle member s. The angle members I00 are arranged'similarly, iii-spaced relation, their intermediate portions I02 or first parts defining a header surface andtheir adjacent outwardly extending ends or second and third parts I04 and I06 defining elongated ports I08. Bridgingthe ports I08 areangle members" H0 or fourth parts disposed with'their intermediate portions II-2 extending over the ports respectively but spaced therefrom a distance on the order of the width of the ports, and with theirend portions "I I4 and II8 extending inwardly toward portions I02, and defining channels I I8 between themselves and the portions I04 and I08 respectively but spacedfrom the sides of:- port's I08 by a distance on the order-"of the width o'f the ports I08. Thus each port I08 dischargesintotwo' channels-I I8 each substantially equal in area toport' l08'and together providing aspace approximately double that of the port I08.

The ports. I08 are-spaced apart so that the distance between leg I I4 of one angle member I I0 and-the leg 116 of the "adjacent member" I I0 is" substantially greater than thec'oir-ibined width of the two port's II8 which communicate with each port I08, being preferably twice that of said two ports II8- combined. The air from eachport I08 is thus expanded and sloweddown in passing from portsl08 to-p'orts II8 as well as reversed in direction of flowQand the expansion and slowing down'='is-repeated when the air passes from ports I I8 to the spaces I20, and the direction of flow of the air-is agai'n reversed. The reduction in pressure and slowing down of the airand the changing of its direction of flow cause the air to be delivered to the web in a smooth, gentle and even flow.

Preferably partition members 'I2I are provided extending at right angles to the intermediate members" I02- or angle member's I00 midway-between .adjacent ports I00. The distance between a partition member I Z-I-a'nd the leg-H4 of member- IIZ-Which is on one side, and the distance between the partition 12-! and the leg I I6 61 member II-2 which isonthe" other side, is desirably substantially greater than the widthof the channelsIIB respectively.'- As'indicate'din--Fig'- ure l-the partition members may extend outwardly toward the web 'sufiiciently to overlap the adjacent end portions -ll i and H6 respectively of adjoining bridging angle members H0. The partitions I 2| serve to prevent mixing o'f the'a'lr discha'rgedthrough channel II8 of one port with thechannel I I8zof the adjoining port prior to the time the final direction of flow to the warp is established. Thus in elfect two volumes or streams of air rise through thespace I and are directed toward the web without interference or cross currents. j

W-ithin-headerlfl means are provided for dis tributing widthwiseandlengthwise of the header the air delivered to it from chamber42, thus cooperating withjports-BO or I08, said means comprising baflles, I; and [.32. Bafiies I30 are dis= posed along a line substantially parallel with the top of chamber 40, and bafllesl32 are arranged along a line atright anglesto the top of chamber and at thelside of the portleading from cham--' ber 40, which is adjacent to the rear end of the header.' I

.Baiifles I3'0 'each comprisea base-I34, a portion I35 extending, substantially at right angles to the base, and an inclined outer end portion I38. The spaces between adjoining basesare. ports I39. These ports I39 have a width equal to substantially half the distance between the middle and the front 'end'portions I 36 and I30 respectively of the members I30 so that air entering header 20 at high sp'eed and pressure is held back and evenly distributed between ports I39 andis' then slowed down and expanded upon passing'into the wider area between portions I36, and at the same time is deflected toward the upper end and middle portions .of the header by the inclined outer-end portions I38. V

' Bafiles I32 each comprise a base I40, a portion 7 I42 substantially normal to the base, and an' outer end portion I44 inclined'toward the header ports which are nearest the port I2 through which the web enters closure I0. The spaces between adjoining bases are ports I45 the width of which is-less than, preferably about one-half, the distance between-the portions I42, or the portions I44 of adjoining members so that the air in passing into the 'main portion of header 20 is first. restricted by ports I45 and then expanded and slowed down upon passing' into the wider area between the portions 2, and Ill respectively of adjoining members I32, and is then dofiected by the end portions 1 toward the ports. 80.

Th space in header 20 between chamber 4i) i and the members I30 and I32 is, divided by partitions I50 and I5! thus dividing the air fiow from chamber 40 into three streams directed respectively to the upper end, the, middle and the lower end of the header. The partitions cooperate with the means, described above to distribute the air widthwise and lengthwise of the header and to prevent eddies.

The means described serve to cut down the,

speed of flow of the air after it enters header and to distribute it evenly so that it is discharged; from all the ports 80 in substantially the same volume, and is spread out and caused to contact out distorting or stretching the web.

vided by this invention a method and apparatus:

in; which the various objects hereinabove set: forth together with many thoroughly practical advantages are successfully achieved. As various possible embodiments might be made of the me;-

chanical features of the above invention and as the art herein described might be varied in vari' ous parts, all without departing from the scope of-the invention, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense. What I claim is: i

l. A drier comprising a closure, a header therein having a number of ports disposed at spaced intervals along a surface thereof, means for leading a web into said closure and along a path adjacent to and substantially parallel with the ported surface of the header, means for pro.- viding a flow of air into and out of the closure and simultaneously circulating air within the closure including means for delivering the air under pressure into said header, and'means fdr distributing the air within the header andicausing it to be discharged from said ports substan-v tially equally in a nonturbulent flow said means.

eachcomprising a number of parallel connected passages extending alternately in opposite directi-ons, said passages being of successively greater cross sectional area.

2. An airldistributing header having a dis charge wall comprising a series of baffles cxtendfv inglaterally thereof, each bafile comprising a;

first part defining anrimperforate wall member of said header, a second part projecting outward- 1y from said im'perforate part a relatively short distance,'and a third part projecting outwardly from said imperforate part a relatively longdistanceand then substantially parallel to said discharge wall and spaced from'the outer edge of the said second part of a neighboring baflle and tween the edge of the inwardly turned portion of said third part of one of said baffles and the first part of the other bafile, and afifth passage between the edge of the inwardly turned portion of said third part of one of said bafiles and the outwardly extending portion of the third part of said adjacent baflle, said fifth passage being substantially wider than said first passage.

3. The device as claimed in claim 2 in which said second and third passages are of greater area than said first passage, and said fourth and fifth passages are of progressively greater area than said second and third passages.

[4. An air distributing header having a discharge wall comprising a series of nozzles extending laterally thereof each nozzle comprising, a first part defining an imperforate end Wall of said header second and third parts projecting from said first part substantially equal distances, and a fourth part having a central portion extending over and in spaced relation to the outer ends of. said second and third parts respectively and having end portions bent in planes substantially parallel with said second and'third parts respectively but extending only part way back to said first part, and a partition member extending outwardly from said first part intermediate the second and third parts respectively of adjacent nozzles and together with the adjacent portions of said first part and the proximate end portions of thefourth parts of said nozzles respectively forming elongated air passages substantially parallel to the passages provided by said second and third parts] I I 5. An air distributing header having a. discharge wall comprising a series of nozzles extending laterally thereof each nozzle comprising, the adjacent and portions of two adjacent members each comprising a. first intermediate part defining an imperforate end wall of said header, second and third parts projecting fromthe respective ends of said first part substantially equal distances, the first parts of said adjacent mem bers being aligned, and an imperfomte, member comprising a fourth part having a. central portion extending over and in spaced relation to the outerv ends of the adjacent second and third parts respectively of said two adjacent members and.

having end portions bent in planes substantially parallel with said second and thirdpmts respectively but extending only part way back to the said first parts, of sdidudjacent members.

6. An air distributing header having a discharge wall comprising a series of nozzles ea:- tending laterally thereof each nozzle comprising. the adjacent end portions of two adjacent members each comprising a first intermediate part defining on imperforate end wall of said header. scoond and third part8 p jecting from the respectiveends of said firstpart substantially equal distances, the-first parts of said adjacent members being aligned, and an im-perjomte member comprising a fourth part having a central portion extending over and in spdcedrelaiion to the outer ends of the adjacent second and third parts respectively: ofsdid two adjacent members and having and portions bent in planes substantially pamllelwith said second and third pdrtsn'especlively but extending only part way back to the said first parts, of said adjacent membersand partition members extending outwardly from aZleZ to the passages provided by adjacent second and third parts.

PAUL R. ROSE.

REFERENCES CITED The following references are of record in the file of this patent or the original patent:

UNITED STATES PATENTS Number Name Date Toale July 6, 1897 Ripley Jan. 28, 1908 Stacey Aug. 25, 1925 Millard Nov. 2, 1926 Kenyon Apr. 7, 1931 Monro Aug. 16, 1932 Number Number 15 580,646

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