US1052927A - Paper-making machine. - Google Patents

Description

A. W. LAMB & L. B. VOSB.

PAPER MAKING MACHINE.

APPLICATION FILED MAY 11, 1909.

1 5g 9g7 Patented Feb. 11, 1913.

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Shire/Moro A. W. LAMB & L. B. VOSE. PAPER MAKING MACHINE.

APPLICATION FILED MAY 11, 1909.

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Patented Feb. 11

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PAPER MAKING MACHINE.

APPLICATION FILED MAY 11, 1909.

1,052,921 Patented Feb/11,1913

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ARTHUR W. LAMB AND LOUIS E. VOSE, OF NALPOLE, MASSACHUSETTS, ASSIGNORS TO HOLLINGSW'ORTH & VOSE COMBANY, OF BOSTON, MASSACHUSETTS, A GORPORATION OF MASSACHUSETTS.

PAPER-MAKING MACHINE.

' I Specification of Letters Patent. i

Patented Feb. ii, tors.

Application filed May 11, 1909. Serial No. 495,317.

l The Fourdrinier paper making machine lays the fibers lengthwise ot' the paper so that itmore readily splits than would be the case if the fibers were crossed.

The present invention is more particularly adapted for use on machines of the Fourdrinicr type and has for its object. the provision of novel means for crossing the fibers to thereby obtain a paperhaving equal strength both lengthwise and crosswise and, if desired, with greater strength crosswise than lengthwise and to obtain a paper with a minimum amount of lateral contraction and expansion. A sheet of paper wherein the fibers are laid more nearly atright angles to the running direction of the sheet, not only has greater crosswise strength, but also a minimum amount of expansion and contraction crosswise due to any atmospherlc changes.

The invention has "for its object the pro vision of means whereby the crossing'of the fibers will re'sult,-such means consisting in a novel construction and relative. arrangement of devices for directing and distributing the flow and regulating the time and posit-ionof placement of'the respective fibers on the wire screen apron, whereby the oppositely flowing fibers will be prevented.

from mixing and will be properly laid with out interference.

A 'convenient construction for carrying out the invention consists of guide openings or conduits arranged in respective series, those of the respective series bein slanted in a peculiar and novel manner, whereby the stuff passing to one series is defiectedin one direction and made to flow therefrom onto the apron, and that passing to the other from one set of guides or conduits will be first matted oaths screen and subsequently those fiowing from the other set of conduits will be laid crosswise of the fibers aforesaid, will appear morefully from the following specification, and will be recited in the appended claims.

In the accompanying drawings :Figure 1 is a sectional view of a portion of a l ourdrinier machine equipped with our fiber crossing device; Fig. 2, a plan view of the guide-box Fig. 3, asection on line 3-3 of Fig. 2; Fig. 4, an end view thereof; Fig. 5, a diagrammatic view showing the respective directions of flow of the fibers and their resultants; and Fig. 6, a diagrammatic view showing how the sets of fibers are laid.

The-headbox 1 contains the stuff which flows onto the apron 2, but instead of the stuii' passing direct to the endless wire screen apron 3 which runs over breast-rolls t, one. of which is shown, the usual tube rolls 5, slicers 6, and deckles 7 being provided, it passes under a dam '8 direct into a guidebox 9 which is provided with a longitudinally extending dam 10 whose lower edge lies slightly above the bottom thereof. This guide-box has two sets or rows of openings 11 and 12 in its bottom, extending from end inclined rearwardly. Whilethose of one row, 11, incline laterally in one direction, that 15, crosswise to the direction of travel of the apron 3, the guide-openings of the 4 other row, 12, incline laterally in the opposite direction, whereby the fibers flowing through the openings 11 are laid crosswise in one direction and those/flowing from the openings 12 are laid crosswise in the other direction. These guide-openings 11 and 12 cause the fibers to be deposited in the pond 13, backed up by the slicers 6 at an angle which is substantially 120 to the running direction of the wire screen apron 3. The fibers which flow through the respective rows of openings 11 and 12 have a tendency to lie in an oblique direction relative to the wire screen apron 3, but the force due to the head in the pond which is causing the stuifi' to flow out over the apron 3, tends to impart to the fibers an inclination to swing into the line of travel of said screen apron 3.

Referring to Fig. 6, the line A--B represents the direction of travel'of the apron 3, the line A t}, the direction of flow from the openings 11, and the line AD, the directlon of How from the openings 12. The resultant of the flow from the openings 11 and coming from the openings 11 and 12 may not actually flux or mix until they are laid on the screen 3, an inclined metal apron 14 is provided, being secured to the under side of the guide-box 9 and extending almost the entire length thereof, but its ends are sepa rated slightly from the deckle straps 7 leav ing spaces for a rotary flow as is diagrammatically illustrated in Fig. 5. The fibers flowing from the openings 11 drop onto a stationary apron 15 and actually deposit and Without the present invention. Strength crosswise 62 Test 1. I

are partially matted on the apron 3 at the point 16 before the fibers which flow from the openings 12 and run down the apron 14 reach the apron 3 at the point 17, being there laid upon the previously matted fibers in crossed relation thereto.

In the diagram shown in Fig. 5, thesmall arrows 18 represent the direction in which the fibers are deposited in the pond as they issue from the openings 11, and the small arrows 19 show the direction in which the fibers issuing from the openings 12 are deposited in the pond, the resultant rotary flow being shown by the large arrows 20.

Actual tests of paper made with the use of our fiber crossing device show greatly incr ased' crosswise strength over that of the same grade of paper made without it, and,

' also, paper made with a machinehaving our invention show greatly decreased crosswise expansion and contraction over paper made on a machine not having our improvements, as follows: 1

With the-present tILL'G-TLiiOTL. Strength crosswise 53 Strengtli lengthwise straight lengthwise T Test 2, stren w e: 0478 fi re st wea es: 3 a Strength lengthwise Strength lengthwise v Test 3 Strength crosswise (L5 Strength crosswise I935 Strength lengthwise Having thus described our invention,

said conveyor at an angle thereto, conduct-I ing means for receiving other fibers from the source of supply and directing the same onto the first set at an angle to said first set and the conveyor, and means separating the two conducting means. I

2. The combination in a paper making machine, of aconveyor on which the paper is to beformed, a stuff receiver, guide con duits disposed obliquely to the line of move ment of the conveyor, and complementary.

guide conduits disposed obliquely to the line of movement of the conveyor and rovcrsely to the first-named guide conduits.

3. In a paper making machine, the combination with a conveyor on which the paper is to be "formed, of a receiver for the stuff. a plurality of guide-conduits leading from said receiver and disposed in general crosswise direction to the running direction of the conveyer which discharge the fibers angularly or crosswise of .the running direc- Strongtlr lengthwise tion of said conreyer, a similarly arranged set of conduits adapted to discharge the fibers in a similar manner but in an opposite direction crosswise of the running direction of the conveyor, and an apron for preventing the laying of the fibers from the lastnamed set of conduits until the fibers from tho first-named setof conduits have been lair-Lon the conveyor.

1. In a paper making machine, the combination with a conveyer on which the paper is to be formed, of a receiver for the stufi', a

plurality of guide-conduits leading from said receiver and disposed in general crosswise direction to the running direction of the conveyor which discharge the fibers angularly or-cr-oss\\ 'ise of therunning direction'ot' said conveyor, a snmlarly arranged set of conduits adapted to discharge the fibers in a similar manner but in an opposite direction crosswise of the running direct-ion ol the conveyor, and an apron for preventing the laying of the fibers from the lastnamed set of conduits \intil the fibers from the first-named set of conduits have been laid on the conveyor, said apron having its ends arranged and constructed to permit circulation in the pond from one side to the other thereof.

' 5. In a paper making machine, the combi- .guide hox and extending adapted to discharge the Ward, and an. apron guide-box disposed dlrectwn to the runnnx direction 0.

between the two sets of g ioe nation of a eonveyer on which 1' be formed, a guide-box for posed above the oom'eyei', a (5;.

thereof, a plurality 0-, ing' downward from s 1 side of said dam, and dispi cross-Wise direction To the of the eonveyeia siinils conduits, at she opposite manner but in an oppe convey-er cross-wise of idle of the conveyeneii a? Ward from the guide h the, two sets of guide-cozr-ooiis t above A veyer and below the first 1 exiending rearward the 6. In a paper making in. nation of a oonveyer on Whi to be formed; a guide-ho for S'e s 1 l posed above the oonveyer, plurelifi guide-conduits leading downward fron general. crosswise w thnonveye'r, a similarly arranged set of conor LS adapted to discharge the fibers in a siniil fhe eomhioh the L manner but in an o giposite direction of the conveyer cross-Wise of the direction of the eonveyer, extending; downward from she a ioint nduiiis, and then forward.

7. In a paper making machine, llie combinaiion with a eonveyer on which she papa is i/Jloe formed, of means for deposiiin crossed. sets oi fibers on lie being reversely arranged and machine, she combi on which the paper nee-d, oils. receiver for the stud, end a plurality of guide-conduits extending in rows which overlap eaol'iother and leadin;; rroni receiyer and disposed in generel "rossewise direction to the running di mess. on 'sely "5o each other and e nve er which discharge or crosswise of the runl eonveyer.

i ,0. process of paper depositing fibers 'oliqnely to the line of subsequently depositing rows upon the said con ene'le'io travel therehrshdep osited fibers.

scribed process of paper making consisting in firsl; depositing fibers upon conveyer at an angle to the line of travel thereof and subsequently depositing messes:

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