US556181A - Paper-machine - Google Patents

Description

, v(No Model.)

G. C.'GrILL PAPER MACHINE.

N0. 556,181. n .Pa-sented Mal. 10.1896.

UNITED STATES PATENT OEE1cE.

GEORGE O. GILL, OF HOLYOKE, MASSACHUSETTS.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent No. 556,181, dated March 10, 1896.

Application filed rune17,1895. sentire. 552,991. (Nomade.)

To @ZZ whom it may concern.-

Be it known that I, GEORGE C. GILL, a citizen of the United States of America, residing at Holyoke, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Paper-Machines, of which the following is a speciiication.

As well known in the manufacture of paper, the web of pulp is passed around and over several rotary drier drums` or cylinders which are heated by steam circulating therein. One disadvantage'ous condition which is found to exist against the most efficient drying action by the cylinders upon the web of paper consists in the filling of the drums with wat-er by condensation up to the height of the journals, which are hollow, so that by reason of the drums being constantly about half-full of water decreased space for the circulation of steam remains, whereby the capacity for the drying operations, both in degree and the quality of the result, is very materially and unduly limited.

Various expedients have been devised orV proposed for effecting the withdrawal of the accumulated water in the drums, some of which, while practicable in a degree, have been very complicated and expensive, while others have been so inefficient as to render their employment inadvisable.

It is the object of the present invention to provide means for keeping the drier-drums of a paper-machine-such as a Fourdrinier machine emptied of all condensations, whereby a full holding capacity of the drum for steam will always be available, which means for such purpose shall be simple, easily applied, automatic, continuous, and entirely practical and efficient in its operation, requiring no attention or care, and withal very inexpensive; and for the accomplishment thereof the invention consists in the combinations and arrangements of parts, all substantially as will hereinafter fully appear, and be set forth in the claims.

In the drawings, Figure lis a side elevation of an intermediate part ofran ordinary Fourdrinier paper-machine, which comprises a series of steam drier drums or cylinders, and which has combined therewith the apparatus which constitutes the present invention, parts thereof being in vertical section. Fig. 2 is a sectional elevation taken on the plane indicated by the line 2 2, Fig. l. Fig. 3 is a hori- Zontal cross-section in detail taken on the line 3 3, Fig. l. Fig. l is a sectional view, on a larger scale, through one of the journals and connected parts for one of, the drierdrums. v taken on the line 5 5, Eig. Ll.

Each drier drum or cylinder A has at its end a journal a, which is supported in the side standard b of the machine, and has coupled thereto the tubular connection B, having therein the two separate passages CZ and f, the one, d, of which has clear and free communication with the interior, of the rotary drier-drum A through the tubular journal a, The parts a and B are so coupled and packed that while the latter is stationary it constitutes no impediment to the free rotation of the journal a, and yet the connection is suitably steam-tight. The passage f has connected to its inner end the tube f2, which extends through the hollow journal ct within thecylinder A, and has its inner extremity downwardly turned, terminating near the inner periphery of the drum,as seen in Fig. 2.

To the outer end of the journal connection B is connected, in communication with the steam-passage d therethrough, the steam-pipe cl2, which also has connection with the larger steam-pipe D, which ranges along the side of the machine in common to the several drierdrums, and having steam connections with all of said drums through the form of journal connections which has been briefly described for one of the drums, and said steam-supply pipe D, connected, as aforesaid, with the several steam-distributing pipes cl2, has a pipe di leading thereinto from the boiler( Each double-passaged connection B has connected to the passage f thereof a pipe g, which extends downwardly to connection with the large pipe or conduit G, which ranges alongside of the aforesaid pipe D. Thus for a set of drumsthere are provided in common thereto the two pipes D and G, both having connections through individual branch pipes with the steam and exhaust passages through the journals of the several drier-drums.

The pipe G, which is closed, except as to the branched pipe connectionsg g, has connected thereto a suction apparatus and a pe- Fig. 5 is a cross-section in detail' IOO cuiliarly combined and arranged outlet-conduit for condensation `drawnby the ksaid sucmtion apparatus from thecylinders intothe pipe G and out from thelatter into rany suitable receptacle or towaste; and, describing imposed uponthe specific form ory detailed kconstruction thereon) itwiil be pointedout ktlxat there isa suction-pipe 71y which is in the form of an inverted U-,and which has its one en d connected to the coupling 7a2 and itsothcr vertical limb depending through the :closed head of `and within a-larger vertical pipe 7f1',

i :into which isilateralily entered a water-suplily pipe j, the7 place 7of entrancer of pipcj into pipe being somewhatabove Lthe lower open f 2 Lend ofthe smaller pipe 7L.r ilVater undersuitable pressure is caused to constantly run from I ypipe j into and down f through pipe kFrom the hollowed coupling yhithe pipesection 71,3 7enters,through the 7head or end wall of the aforementioned large horizontal f .pipe G, and at the lower end of thezsaid couplingh2 is connected thedownwardly-oxtending conduit l111which,preferably,'has aref 7tu r11-bend, asseen'at m2, to constitute aftrap or water seal, and with the discharge continuf ation or passage m, which may leadback to 7the boiler orelsewhere. f f f f f f The water entered and falling in the pipe 1'r causes a suction through the pipe 71l and wlthinthe pipe G, the eiiect of which is to drawthrough thepme f?, passage f, and pi pc f y :into and through the said pipe G water and condensation from the drier-drum, and the same in passing into the coupling 7L- (at the topv oi' which the suction-pipe 7L is entered) will by reason of its gravity fall down in the pipe m, the force of the suction or vacuum being insuilicient to carry the water up to and across the intermediate horizontal member or back of the return-bent suction-conduit 71,. In practice there maybe in some extent a small proportion of steam not fully condensed, which will be drawn around into the pipe '27,' but this is immaterial.

Other means than those shown may be employed for creating the vacuum or suction effeet in an upward direction at the junction oi' depending conduit m and the branch thereof which leads into the pipe G without departing from the essentials of the present invention, and while the particular arrangement of common steam-supply pipes l) with branched steam-distributing pipes leading to the several drier-drums, and also of the common large conduit or chamber G with individual blanches g, having a Siphon-like communication with the lower interior portions of the drums, are shown as advantageous, very dcsirable, cflicient, ingenious, novel and valuable, the invention is not to be limited to this particular arrangement inasmuch as the gist of the invention consists in the"combina tion, with a drier-drum of the paper-machine havingan adequate steam-inlet conduit, of an outlet-conduit which has a communication -fi through the journal of the drum with a lower portion of the interior thereof, and which has a connection outside of the drinn with a chamber or passage connected to the top of whichk is a suction-pipe and :to the bottom of which a downwardly-directed discharge-passage.

r:It is understood that `in this machine the steam'which is entered in the drier-drinns is at such low pressure as to show practically no f pressureat the gage. yllencethere islittlc or c 'l laviug7 thus described myinvention, what l. claim, and desire to secure by Letters latent, isf 'l `In a paper-machi ne,the combination withy a series: of rotaryY drier drums or cylnlders .cach rlmrvinga steam inlet conduit, of, Lthe chamber or conduit, G, provided in common yto the several drums and having siphon-likc kbranched conduits leading from said conduit, f G, through a journal of each `of lheidrunls yand communieatingy with the interior ci" the drums near their bottoms, a suction-pipe, 711, f

having a connection for suction with the con-y duit, G, and yhaving a dependinglimb, kthe pipe, fi, into which said limb enters and whichr f hasthe sidewise-entering water-supply pipe,y

j, anda dowliwardly-directed conduit, m, having connection with the said conduit, G, at a point adjacent and under the place of connection to said conduit of the suction-pipe, substantially as described.

2. ln a paper-machine in combination, a scries of rotary drier drums or cylinders each having a steam-inlet conduit, the conduit or chamber, G, provided in common to the several drums and having branched conduits leading therefrom through a journal of each oi the drums and communicating with the interior of the drums near their bottoms, the coupling, 7b2, having a branched pipe, 7L, connecting the conduit, G, the return-bent suction-pipe, 71, having one end entered in the top of the hollow coupling, 7L", the Vertical pipe, t', of larger diameter than the suctionpipe and within which the other limb of said suction-pipe extends, the water-supply pi pc, j, entering pipe, 1l, above the lower end of the said entered suction-pipe, and the conduit, m, connected to the lower end ol' the coupling, 712, and having the return-bent passage and the discharge continuation, m3, all substantially as described and shown and .lor the purposes set forth.

GEORGE (l. Gllil'i.

Witnesses:

WM. S. llnLLows, K. I. GLEMoNs.

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