US957981A - Suction-slice. - Google Patents

Description

W. H. MILLSPAUGHJ SUGTI'ON SLIGB. APPLICATION FILED JUNE 10, 1909.

2 SHEETS-BEBET l.

W. H. MILLSPAUGH. SUGTION SLIOB. APPLICATION FILED JUNE 10, 1909.

Patented May l?, 1910.

2 SHEETS-SHEET 2.

is expressed by (zo-actingy roll thronghthe sheet oil snoeren-stron.

ltei..

Spi-animation o t letters Patent. Patented :ll/lay l'l, .1910.,

Applicationled June 10, 1909.. SeriaLNo. 501,3E6.

and useful lmprovements in Suction-Slices and ll do hereby declare the following to be u.- iulh clear, and ena/et description ot the invention, such as will enable others skilled 'in the art to which it' appertains to lmake and the saine. l

'lhis invention, which l te a suctionu slice is a dce tor rapidl d continuoy ov by vacuum t r Water which trom a web otulp or other vvet stoclr ted Ween said rol as in the case ont a cylider paperhing machine Where an endless felt passes around a Weighted couch-roll bearing upon the cylinder-mold or toriningcylinder which revolves in the pulptanlr'or vat and takes up a hlm or coating oit pulp which. is

-transferned to the surface or the telt by pressure ot the couch-rolln the latter acting to squeeze the Water out el the sheet ot pulp i v that is formed on the cylindenmold and by this action to inalie the sheet oit pulp adhere rmly to the telt; or', in the case ot a cylinderA machine having more than one cyder, to mahe cach vsuccessive layer ot attach 'itself to the preceding one. las process ot 'squeeaingit'orces the Water t the telt.

it present a common piece ot board or metal, called a slice,9 is mounted upon the telt and forms a dam to prevent the Water' trom running back on the 'telt and to cause the Water to leave or dow ed trom the sides ot the felt at. the ends of the slice. ln making many kinds oit' paper, the Water piles u tor a considerable depth from halt an' inc to aninch and-a halt or niore and in such cases it is quite apt to Work its Way back 'under the slice or'between the telt' 'and the paper carried by the felt,

in which case injury to thepaper results. i lin the language of the machine tender, the

sheet shows Worms, railroads 7 and lloiv-y e'rs. The purpose ot the suctionslice is to instantly remove this Water avoiding the dithculty above `mentioned and assisting to a certain extent in the drying ot ythe felt and pa er at this point.

paper-pulp and' lll invention will" be 'hereinafter 'trst this specification and then more pointedout in the appended claims.

ln said drawings: Figure lisa side elevation of the Wet end of a cylinder apermakingmachine showin an application ot `xmy invention thereto. dig. 2 is a halt plan and halfhorizontal section of the suctionslice, an intermediate portion thereof being broken avvay. Fig. 3 is a baclr View of the same Fig. d is a cross-section on line M of Fig.` 3.` li is across-section on line 5 --5 of lFig. v3. lig. 6 is an enlarged' sectional ;elevation oitl soinuch ofthe cylinder paper-making machine as will show the relation of the suction-slice to the felt, forin-y ing c linder and couch-roll. v

n 'gz l, At is'the pulp-tank or vat; B is tliecylinder-mold or tunning-cylinder; C is the couch-roll9 and F is the endless felt which passes betweenthe tormingcylinder and couch-rollend returns over the latter. 'lhe forming cylinderB takes up alm or coating ot pulp which is transferred to the felt, and in passing between the cylinder Aand the couch-roll the Water is expressed therefrom into the angular recess between the felt and the couch-roll whereby the sheet of pnl is caused to attacliitseli firmly to the tell. A

rlhe suction-slice which is `placed across the telt behind 'the couchroll, is shown more clearly in Figs. 2 to 6. lt comprises a ipe or' tube l approximately Wedge-sliep or sector-shaped in cross section, or ot' such provide a lateral contracted portion 2 with 'a narrow edge '3 Which is or maybe either continuously slotted longitudinally or else provided with a plurality of elongated ports or slots d as shown, or it may be perforated with a row of closely adjacent 'smaller orilices rllhe pipe thus provides an elongated tracted month with a narrow longitudinal passage oi' passages for admission of air, and with an enlar ed body-portion; so'that byexhausting air rom said chamber, strong air-currents are created through the `ports Li. The pipe is closed at its ends, and its interior chamber is iii-communication by suitable or ot er a propriate exhaust a aratus;

trunnions 5r. journals mounted iii suitable bear' s therefor at Opposite sides vof the other suitable cross sectional shape as tov exhaust chamber having a longitudinal conipe-connections Wtha suction-pump and the en s ofthe pipe are-provi ed With'- Vtelt, saidtriinnions or journals being Sodio,

particularly lool edge 3 is presented to the angular recess bein water from between meer;

ppsed that the contracted portion 2 of the upon the lower roll or cylinder 'and under pipe will extend .forwardly or toward the the web orapron instead of-'upon the felt as couch-roll and rest of its own weight upon shown.

the felt, lso that the slotted or perforated I ain aware that the pro ositio'n o removtge felt and coiicli 7o tween the felt and couch-roll for rapidly 4ro of a cylinder-machine, by means -ofan4 and continuously sucking up the water as external vacuum a pliance 'is not broadly.

it is expressed by the coactin roll and cylinnovel, and hence I do not claim such means der from the sheet of pulp orming on the broadl but so far as I am aware the ineaiis "felt, as more clearly appears from Fig. 6. hereto ore suggested for such purpose have 15 As shown, the ends of t e pipe are provided not been satisfactory and racticable, as my with and closed by. flanged heads or caps 6 present improvement is be ieved to be.' The and 7 of a shape corresponding tothe pipe siiction-slice may also be used for removing and in which the ends of the pipe are fitted water from a wet felt or apron in cases where l5 and preferably brazed or otherwise secured the felt asses between press-rolls or squeeze- 8o and made substantially air-ti ht and said rolls wit out a. film of stock thereon. caps or heads are provided with the trun- What I claim as my invention and desire nions'orI journals 8, the axis of which trunto secure by Letters Patent isi:l nions is through the enlarged back rtion 1.' A suction-slice consistingof a tube of the pipe, so that when mounted t e oradapted for communication with an exhaust 85 wardly offset contracted ortion 2 of the apparatus, said tube having an enlarged pipc will bear upon the fe tas aforesaid. bo y portion and a contracted lateral por- Fig. 1,. 9 indicates the bearings; for the tion the top and bottom sides ofwhich come truniiions or journals of the suction-slice, together in a narrow edge the latter being g5 which bearings are shown supported by arms provided with a longitudinal opening or 90 or standards 10 mounted on the sides offthe o enings of narrow width, whereby-exhausvat A. One of the heads or caps, as the tion of air from said tube will create strong cap 7, is formed with a hollow crank-like air .currents through Said opening or openarm 11 in communication with the interior. ings, for the purpose described.

of the pipe through the opening 12 shown 2..A Suction-slice comprising a pipe 95 in Fig. 2; and saidarm' 11 has a' lateral adapted for communication withan exhaust openin at 13 which is referably interiorly apparatus and having a longitudinal openscrew-t readed for couplling with the end of ing or openings for suclnn water thereint, a suction-pipe 14 shown in Fig. 1, which said pipe being provide with 'eccentric suction ipe leads to the exhaust pump. pivot means whereby its perforated side will 100 One of the caps, preferably the same cap 7, Swing downward '0D PlVOtS, fOr 'the purpose is also rovided with 'a cleaner-hole 'in the described.

`end of its trunnion, closed by a removable .3. A suction-slice cinprisiiig a pipe screw-ca 15, the .latter being shown formed adapted for communication with an exhaust 40 external y with anut for engagement by a apparatus, said pipe having pivot means and 1w wrench. formed with a lateralcontracted portion off- Preferably thebottoin-side of'the pi e 1 set from said ivot means and provided with is beveled as indicated at 16 just behin the -alongitudina opiening or openings, for the perforatedfront edge 3, and the pipe is s o purpose describe 'mounted in its journal-bearingsthat only. 4. A suction-slice cmprising a -pipe 110 the narrow dat surface 16 rests upon thev adapted forcommiinication with an exhaust felt, instead of the whole bottom side of the apparatus and havin caps pr heads closing pipe, thus reducing friction on the fe1t.\,. the ends thereof an prpvided with trun- While I have shown and described-mj1 imnions or journals eccentric t o the pipe, the. provement iii connection -with a' cylinder side of the pipe opposite said trunnions or- 115 paper-making machine, and for removing journalsA being provided with a lon tudinal the water from the angular space between opening or openings forsucking t e water the felt and copain-m11, it ild-bestated finto the pipe, for e purposedescribed. that the device is' not'so resti` 'l in its use- '5. A .suctipnslioe comprising a pipe Bfr-'ful applications, but may al de iised `for having a longitudinal inlet openin or open- 120 removin water between coactingrollsv at ings and havin caps or heads c osing the' other aces in paper-makin machines, ends thereof an provided with trunnions or either o? the cylinder type or the ourdrinier journals, one of said caps or headshaving 'type; nor do I intend tolimit vthe invention a hollow arm in communication with the to lise with paper-making machines only as ipe and adapted for connection with a pipe it maybe used generally forijeinovingpvater eading to an exhaust apparatus, for the purexpressed'by coacting rolls from a s eet.of 'pose described. .j Y wet stock fed betweenthe rolls eitheiwith 6. A suction-slice comprising a pipe 4 i or without a traveling felt or apron';'and in havin eccentric trunnionsor journals and soniesuch cases the siiction-slice would rest -provi ed at its side opposite said journals 130 with an inlet opening or openings, the pipe being adapted for communication with an exhaustapparatus, and a cleaner hole in the endfof a .trunni'on or journal with a removable cap therefor.

7. Incombination with traveling surfaces meeting at :1n angle and between which a sheet of wet material is fed and the liquid expressed therefrom into the angular reoess between said surfaces, of a suction-slice oonsisting of a transversely arran ed tube mounted on eecentrlo plvots where y a side of the tube rests upon one of said surfaces, the said side being provided with a longitudinal .inlet opening or openings, and the tube 15 being in communication with an exhaust apparatus, substantially as and for the purpose described. Y

In testimony whereof I aliix my signature, in presence of two witnesses.

WILLIAM H. MILLSPAUGH'.

1Witnesses: CHAs. MOORE, C. L. MIELKE.

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