US1022379A - Web feeding and drying apparatus for paper-machines. - Google Patents

Description

. 0 E. POPE. I WEB FEEDING AND DRYING APPARATUS F01 PAPER MACHINES.

APPLICATION FILED DEC. 1, 1911 1,0Q2,379.

' im zssza- A TTOIEIVEY.

Patented Apt 2, 1912 i. POPE.

WEB FEEDING AND DRYING APPARATUS FOR PER MACHINES.

n! llx I 1 APPLICATION FILED DEC. 1 i911.

i VI'TNESSES:

v UNITED s'rn ras JAPANESE TISSUE nuts, or

nnssaonusarrs.

Parana cinema a. ure, or noLYoxE', massacnosnr'rs, assien'on or 'lfHItEE-FIFEHS re HOLYOKE, Mass-scat erers, a commission or z p WEB FEEDING AND DRYING APPARATUS FOR PAEER-MAGHINE$ Specification 0; Letters Iatcut.

Patented Apr, 2% rate,

Application filed December 1,1911. Serial No. seams.

To all whom it may concern Be it known that I CHARLES E. Porn, a citizen of the United gtat-es ofAmerica, and resident of Holyoke, in the county of Eampden and State of Massachusetts, have inventedcertain new and usefullinprovements in Web Feeding and Drying Apparatuse's for Paper-Machines, of which the followingfis a "full, clear, and exactidescription.

This invention particularly relates to the drying apparatus of: a Fourdrinier'paper machine, and more particularly to the drying apparatus which includes a series of steam drier drums to be employed in conjunction with or as a part of a machine for maki a very thin web; of paper, such as tissue or news papers.

The particular object of this invention'is 1 I "to so impart heating actions to the web after 'itemerges from the wet end of the Fourdrinier machine and especially upon coming ontotherfirst drier drum of the series that the web instead of adhering and being carried entirely around by the first drier drum extreme importance in the drying apparatus will readily cleave away ,fromsuch drum --to assume its proper direction or course of travel to the next drum. This is a matter of of a machine for making extremely light and thin tissue or other paper; The invention is described n conj with the accompanying drawings and is set forth in the' claims. Y I

In .the drawings :Eigure 1 is aside eleyation including the forward end portion or web-part of a-pa-per machine and the drier-drums. Fig. 2 IS a lon 'tud-inal V61:

tidalsectional view throu h t e same.

, In the drawings at the right hand portion of the views, the means for forwardly ad vancin' the very thinwet web of paper totwafrd? t e driers or what may be termed the drawing out means, 1s indlcated as comprisi ngapair ofpress rolls a and b, between 4'5 h'"h hi felt as usual, so thatin practice the wet web,

run theendless aprons or bands of f and f, the upper endless band d being ard'er felt while the one 7 is of softer of paper-will adhere to and be' carried along by the harder felt apron, and such harder felti'apron dpa'sses forwardly upiinit'yl to which is-thtifirgit drier drum A;

unction {that imparted to the rest of the'drums, in practice, pressure to be maintained in" the the other drums A, A, here shown as six in number, in upper. and lower tiers, the first drum A having its loeation at the level of the upper tier.

w represents the'web of paper, the course of which is indicated as passing first upwardly around the firstvdrum, thence successivelyunder the drums of the lower tier till alternated. by passages upwardly around the r drums of the upper tier as usual.

The first drum. A. is made with its walls of greaterthiokness than are the walls of the other drums, soethat the first drum may withstand greater steam pressure as required therein than that to which the other drums are subjected.

B represents a pipe understood as receiving steam from a suitable source and having connection through the journal of the first I drier drum A,D representing the pipe for carrying out exhaust water accumulated from condensation in the first drum.

G represents a pipe understood as receiving and independently carrying steam from i l a suitable source andat a pressure different from that supplied throu h the pipe B into the first drier drum. Tiis pipe Gr ranges horizntally along the hacker the drierapparatus suitably near the ends of the drums, and oranch pipes G lead from this commen steam sup ly pipe G into all. of the drums A, A oft e series, excepting, .of I

course, the first drier drum A, the connection being through the journals of the seaeraldrums. 7 v, e

J J represent pipes individual to the drums'A for taking the exl'iaust and accu;

mulated Water of condensation to the, com

mon waste pipe k;

. The pressure of steam to be maintained I the first drier drum as sup lied by thestea zn pipe B is greater than tiat supplied into all of the rest of the drums t rough the steam pipe G to give corraipohdingel a; t'lail higher temperature to the firstjdrum first drum is from 15 M pounds, white that maintained-"in the remaindei' o'fhthe drums is usually from 5 to 8 pounds, U Theweb in its; extremely wet condition on its coming to and passing partially around the first drier drum A, being suhjectedto th higher heat thereof has-so great a portion 0 f the moisture therein removed therefrom a considerable portion of the moisture from the web so that it reaches the next drum in a much --less wet condition and-the heat of such drum and the'succeedin'g drums being comparatively. low, the further action to complete the drying of the paper is gradual and conducive to the best results. As anuas sistance to the removal of the water carried in the wetweb when it is brought by the drawing outmeans from the pa er machine onto the first drier drum, I emp oy a fa'nL which has its location above and to the rear of the first drum, and is rotated in such a di rection that its revoluble blades force the air more or less nearly, horizontally and forwardly relatively to the top of the first drier drum A over and around which the web is of the first drier drum, is effective for blow passing. This fan, the blades of which are understood as extending longitudinally relatively to and in parallelism with the axis ing the moisture in the form of a mist from the web to become dissipated in the atmosphere, and ing action. p

The temperature in the first drier drum A may be readily increased or diminished, as occasions 'or cpnditions may require,tt0

accord with the thickness of the we and the degree of moisture. being carried therein. And inasmuch as ingredients of the paper stock, or chemicals, such as sizing, alum, coloring matter, etc., affect the nature of the web of paper as regards its tendency to adhesion against the first drier, it becomes necessary under different "conditions that the temperature of such first drier shall be varied to accord with the adhesive nature of. the web, and so that, in the running, the papen-of whatever character ornature-will readily and with certainty cleave away or peel from the smooth surface of the drier. And by maintaining the periphery of the first drier drum ina bright and smooth condition with the capability of varying the temperature in such drum, it becomespossible in my iml commonly employed.

supplying steam into the firstone eithe one thereof having its walls thicker than supplying steam thereinto' an a 'ret olubly greatlyaccelprates the web drywardly and across the top of such drum;

proved machine to run the aper fweb" around the drier drum without t e require- I meat of the felt apron or blanket heretofore Y 6(- I claim 4 1. In the drying apparatus or paper machine, a series of drier drums means for v drums, and independent means for -jsupp1y f ing steam under a different pressure into the V other drumsof the series. j 7 2.1a the drying apparatus of paper machine, a" series of drier drums, -a 'stlean i' pipe for supplying steam at a given pressure into the first one of the drums, another pipe for carrying steam under a different pres sure, and.branches"leading from said secon'd pipe to connection into the other drums'bf-f theseries. i I 3. .In the: drying apparatus of a pa er. inachine,-a series of drier drums, theii; I

walls of the other drums, means for suppl ing steam into the first one of the drums,'an independent means for. supplyingsteam under a different pressure into the other drumsf" oftheseries. I "4. In a drying'apparatusof a papernia Y chine, a. series of drier drums, ineans' for" bladed fan located above and to the rear of the first drum and operable to force air f wardlyand'across the top oi. such drum;

5. In adrying apparatus of a paper an}. chine, a serie'sf-of' drier drums,---meansfiftfi supplyin'gsteam into the first Zone oftli drums and independent means for. sup 1 ing steam un'deria' different pressure into t otherdrums of the series, and 7 a revolubl'y' bladed fan locatedaboveandgto therearof the first drum' and operableto force'zair for 6. "Them'ethod of dryinggfi "w'eb" 0' paper which consists inj'subj in' th e'web initially to the drying .action' o a rotary drumhaving 'a high degree of heat therei and thereafter subjecting' the partially 'dry paperto the action of other drumsheated t a lower d,

Signed yme atf-s g fl Mass, in presence of'twq .subsc'ri ingflwitnesses. a

CHARLES E. POPEig Witnesses:

- G. R. Dnrsoonn, WM. S. BnLLows.

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