US1483961A - Paper-making machine - Google Patents

Description

Feb. 19 1924.

E. J. W ILSON ET AL PAPER MAKING MACHINL Filed April 12, 193

Patented Feb. 19, 1924.

UNITED STATES PATENT OFFICE.

EZEKIEL J. WILSON, OF EAST GREENBUBH, AND EDWIN A. BEES, OF ALBANY, NEW

YORK, ASSIGNORS 1'0 1''. C. PORATION 01' YORK.

norcx'e sons, or masseuse, new max, a conmrna-luxme 1401mm. Wm... M April 1!, 102;. m n llo..83l,5l6.

To all whom it may com-em:

Be it known that we Eznxnzr. J. \VILsoN- and EDWIN A. Rnns, citizens of the United States, residing at East Greenbush, in the I county of Renssclaer, and Alban in the count New ork, have invented certain new and useful Improvements in Paper-Making Machines; and we do hereby declare the folw lowing to be a full, clear, and exact description of the invention, such as will enabe others skilled in the art to which it appertains to make and use the same.

The invention relates to paper making 16 machines' In these machines the web of paper stock is formed on. the I delivery end of which are located the couch rolls for removin a part of the water and 20 ressin the stool? into compact web form. rom t e couch rolls the web passes successively between the pressure ro Is and felt ofa series of presses, each of which in turn removes a part of the water remaining" in 15 the web and from the lastpress the web passes to the heated cylinders of the dryers.

Experience has shown that the cost of removing moisture from the paper stock by the dryers is some thirty" times the cost of so removing the same amount of moisture from.

the stock rolls. or by therolls and .It is important, therefore, that q'for removing water from it reaches the dryers and particularly the presses be maintained in proper con ition to most efliciently remove the maximum amount of water, or that amount which exby pressure applied by the couch elts of the presses.

the devices perience shows will secure the most eilicient' and economical cooperation between the moisture removing mechanismsof the machine.

The present invention enables any or all of the water removing devices of the paper making machine to be maintained in condition for the most ellicient operation. and this result is secured by the provision of means for measuring the water being extracted by the water removing devices at any given oint or ateach of a plurality of points in t e travel of the wet paper stock through the machine. The provision of means for measuring the "water being extracted by thapwsaure rolls and felt of a of Albany, respectively, an State of Fourdrinier wire at the the stock before a lm p'h i is readily installed in .ing extractcd from illustrate diagrammatlca given press not only enables the press to be maintained in condition for most elfi'cient om'ation but also enables the user of a mac e to determine the efficient life of the felts,-and also the character of felt which may most economically used in the manufacture of a. given product; In case there is a material and maintained decrease in the amount of water being removed, which will occur when the felt is no longer operating at maximum or economical efficiency, the means for measuring the amount of water being removed will indicate this fact to the operator so that the continued and uneconomlcal use of a worn out felt may be avoided. By comparison of the amounts of water removed-by felts of difl'erent character when operatin at maximum eliiciency in connection wit a a comparison ofthe life of the felts the user may determine what character of felt is most economical, for instance, whether it is more economical to use a comaratively light or a comparatively heavy elt, or a felt of one desi as compared with another. In other wor s, the invention enables the user of the machine to determine the condition and equipment of the water removing devices requisite for uniformly economical operation and to approximately maintain suc condition and equipment.

Any suitable means for measuring the waterbeing removed from the wet stock by the water removing devices may be utilized preferred tothus measure this water iy causing it to pass through a flow nozzle, which is connected to operate a recording flow meter, since this means may be applying. the invention to existing'machincs and when installed will accurately measure and record the water hethe paper stock by any g ven mechanism. p The invention will be readily understood from the accompanyin drawings which y the application of the preferred form of the invention to two of the presses of a Fourdrinier paper machine.

In the drawing the Fourdrinier wire upon which the wet paper stock. is formed into a web is indicated at 2, the lower couch roll about which the wire asses is indicated at 4 and the upper feltj eted couch roll which removes apart of the water from the Stock provided for measuring to the heated cylinders of the (lt' \tl'. flu the.

=pipe is provided below and the felt and a further part of the water is removed therefrom. From the tirst press the papen stock passes onto the felt 1- of the second press, bv'whieh .it is carried between the-upper am lower press rolls 1t: and 18 where a still further, part. of the water is removed by compression of the stock between the felt and upper press roll. manner the web )assessncccssi el r through whatever series 0 '{n'esses may be ncor-porate, ed in the machine and fronrjluylasti press passes to the heated drying and calendering rolls of the dryer.

In applying the present ihventiori to a machine such as above indicated means is moved by any one or more of..,the mechanisms which remove successive portions of the water from -the wet stock In its travel construction Indicated in the drawings means is shown for measuring the water removed by the first and for measuring: the

water removed by the secondof the presses.

it being understood that similar means may be. utilized in connection with the other couch roll. or with other presses, with the mechanisms which remove. water from the wet -.tock during its passage tin-"ugh .the machine. In the constructionillustrated the water removed from the paper stock by the felt and pressure rolls of the. first press is collected in a trough 20 mulerl \"iu; the lower roll and provided with a doctor blade 22 engaging the lower roll 1'. near the bight of the rolls and delivering the water removed at this point into an auxiliary inclined trough 24 from which itpasses into the trough 20. The water collected in the trough 20 passes down through a pipe 26 leading from one end of the trough and this the bottom of the trough with a horizontal portion .28 within which a flow nozzle 30 is locatedu The end of the pipe beyond the flow nozzle is bent upward and has its discharge and arranged above the horizontal portion so that a head of water is maintained in the pipe and a flow f water through the nozzle dependent upon the amount being removed from the wet papn stock by the cooperation of the felt and press rolls. The flow nozzle. is connccted by pipes 32 with a flow meter 34 of usual construction which is operated by, the flow of water through the flow nozzle and indicates and records the rate of flow and consequently the amount. f water being removed by the pres The amount of the waterbeing re -water beine removed by the sccond press is measnret and recorded b v a m eehani s m which is the same as that applied to the first press.

During the w amount of water being removedlby each press will be indicated and recorded on the time chart of the corresponding meter and will inform the operator whether each press remove the II is operating ;to uniformly amount of water requisite for its most ell-l cient o icration and whether the amount of J waterieingnexnoved by each press bears 'that relation to the amount of water being i removed byt-he other presses which continue useofuthe' invention may-have demonstrated will secure the most economical results. The meters will-also indicate to the operator whena felt becomes so worn that it. can

no .longelwhe economically retained in the 83 press so that continued use of the felt after ith as ceased-to operate. eiiiciently may be avoided. A i.

While .the invention -has been illustrated and descrilwd with special reference to its 00 application to the presses it will be understood. :rs'heretofore indicated. that it is not confined tothose mechanisms for squeezing water from the paper stock but may heap- ;gd' a paper making machine.

'bat is claimed is: .1. ln apaper making machine the combination. with devices acting on the paper stock at a point in its travel to removewater therefrom of means for measuring the water being removed. Y

:2. in a paper making machine the. combination with devices acting: on the paper stock at a plurality of points in its travel through the machine to remove water there'- trom of means for measuring the water bein;: removed at each point.

It. in a paper making machine the combination with nn'chanism water from the paper stock at a point in its travel through the machine of means for measuring the water removed from the stock byz aid mechanism.

-t. in a paper making machine the coin bination wita mechanism for removing water from the paper stock comprising a layer of felt and a pressure roll between which the stock is squeezed ofaneahs for measuring the water being removed by said mechanism; t

5. In a paper making machine the combinntion with press rolls and an endless felt for carryingthe paper stock between the rolls of means for measuring the water beinn removed from the stock by the press rolls and felt.

(3. In a paper making machine the combination with devices acting on the paper stock t remm'n water therefrom. means for operation of ,the machine the 10 plied to other water removing mechanisms 98 for squeevling 11D c'ollecting the water; 5 fl qw nozzle thron which the water is caused to pass, and a flow meter connected to be operated by the flow of water through the nozzle.

In a paper making machine the combination with devices acting on the paper stock to remove water therefrom of a trough for collecting the water, a discharge pipe leading from the trough, a flow nozzle 1n the pipe, means for maintaining a head of water at the nozzle, and a flow meter connected to be operated by the flow of water through the nozzle.

8. In a up bination with press rolls and an endless felt for carrying the paper stock between the rolls of a trough for collecting the water 1e rolls and felt, a discharge pipe having a portion in which a head of removed by tl water is main portion, and a flow operated by the flow nozzle.

tained, a flow EZEKIEL EDWIN A.

nozzle in said meter connected to .be of water through the 3. WILSON.

REES.

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