US1201693A - Flow-equalizing distributer for paper-machines. - Google Patents

Description

W. J. CAMPBELL.

FLOW EQUALSZING DISTRIBUTER FOR PAPER MACHINES.

APPLICATION FILED APR.2I.1910.

Patented 0ct.17,1916.

INVENTOR ATTURNEYJ Y wmmm .1. cm];

. UNITED STATES PATENT OFFICE.

rarnn com Oil! GLENS FALLS, NEW YORK, ASSIGNOR TO INTERNATIONAL OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

FLOW-EQUALIZING DISTRIBUTER FOR PAPER-MACHINES.

Specification of Letters Patent.

Patented Oct. 17, 1916.

( Application filed April 21, 1910. Serial No. 556,667.

To all "whom it may concern Be it lmown that I, WILLIAM J. CAMPBELL, a citizen of the United States, residing at Glens Falls, county of Warren, State of New York, have invented certain new and useful Improvements in F low-Equalizing Distributers for Paper-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in flow-equalizing distributers for paper machines and particularly to means, cooperating with the usual slice-bar, for distributing the stock to better advantage as it enters upon the F ourdrinier wire-screen, where the felting of the fibers of the wood pulp or the like takes place.

To this end, the invention consists in providing a flow-distributerhaving a series of pendant projections or teeth extending down into the stream of stock, preferably to near the bottom thereof. The effect is to cause a series of small eddies across the flow of the stock, thereby assisting in the final felting of the fiber by giving them, as they pass under the distributer, a tendency to cross and interlace with each other. This preferably takes place just before they reach the 'usual slice-bar, which has the customary function of determining the level of the stock, as it enters uponthe wire screen of the machine, and to hold back objectionable floating substances and the like. a

My invention has the additional purpose of causing-a more uniform distribution of the stock across the entire width of the stream, by breaking up the stronger currents that may exist at any place in the stream, and equalizing to a greater degree the rate of speed with which the stock as a v whole passes under the usual slice-bar, and onto the screen-wire. 4

In the accompanying drawing, Figure 1 represents, partly broken away at its middle portion, the preferred form or embodiment of my invention. Fig. 2 representsa top plan view thereof. Fig. 3 represents a section taken on a plane indicatedby the line 33 of Fig. 1. Fig. 4 represents a section taken on a plane indicated by the line vention therein illustrated, the distributer is made in two parts a, nally, to the width of the particular paper machine with which it is to be employed. To this end, the sections a are provided with longitudinal flanges b at their upper edges, these flanges cooperating with suitable clips 0 andfiller pieces 03, whereby, through the instrumentality of the set screw e and locknut f, the desired longitudinal adjustment may be obtained.

At their outer ends, each section a is providedwith a bracket lug g, carrying a set screw it and lock-nut i, or some similar connection for releasably attaching the distribadjustable longitudiso as to accommodate the distributer uter to any upright of the machine, as for diately in advance of the place where the stock flows upon the Fourdrinier wire screen, the stock being fed from the flow box t, or its equivalent.

As hereinbefore indicated, the downward projections or teeth of the distributer, indicated by the letter '0, are intended to dip well down into the flowing stream of wood pulp or other paper stock, preferably to near the bottom thereof. In this way, there is formed across the entire width of the flowing stream .of stock a series of small eddies at the rear of the teeth or projections '11, these eddies tending to cause the fibers in the stock to cross or intersect each other to a greater or less degree, thereby presenting the stock to better advantage to the felting action of the shaking Fourdrinier screen, and substan-" tially equalizing the rate of flow of the stock, by'breaking up any stronger currents that may exist at any part thereof, before the stream enters upon the screen-wire.

Having thus described my invention, what I claim is 1. In a paper making machine, means for causing a succession of small eddies across the stream of pulp as it is being supplied to the machine, said means being stationary with respect to the said stream; substantially as described.

2. In a paper making machine, a series of teeth spaced apart and extending transversely of the pulp stream and dipping below its surface as it is being supplied to the machine, said teeth being stationary with respect to said stream; substantially as de scribed.

3. In a paper making machine, the combination of a shaking screen, a slice bar near the receivingend thereof, and a series of teeth stationary with respect to said slice bar and positioned slightly in advance there of. said teeth being spaced apart and extending transversely of the pulp stream and dipping below the surface as it is being supplied to the screen, thereby equalizing the low and aiding the felting on the screen, substantially as described.

4. In a paper making machine, the combination of a shaking screen and a distributing and cddying device positioned near the receiving end of said screen, said device consisting of a bar made in overlapping sections adjustable longitudinally with respect to each other, said sections having each a series of teeth spaced apart and dipping into the pulp stream and there held stationary to equalize the liow and produce eddies aiding in the felting of the pulp on the shaking screen, substantia'lkv as described.

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

\VILLIAM J. CAMPBELL.

WVitnesses:

E. L- SEELYE, H. C. BULLOCK.

Images