US1323702A - Shake arrangement for cylinder paper-machines. - Google Patents

Description

v E. W. LINDQUIST. SHAKE ARRANGEMENT FOR CYLINDER PAPER MACHINES;

APPUCATION FILED APR, 1, {918- v 1,323,702= Patented Dec. 2,1919.

2 SHEETS-SHEET I.

jay W KW E W. LINDOUIST. SHAKE ARRANGEMENT FUN CYLINDER PAPER MACHINES.

"IWPUCATION TILED APR. 1, M18. 1,323,702. lntvnt'vd' 1m. 2,1019.

- V ,Z n (/9 72757 UNITED STATES PATENT oFnIoE.

ERNEST W. LINDQUIST, 0F LAWRENCE, MASSACHUSETTS.

SHAKE ARRANGEMENT FOR CYLINDER PAPER-MACHINES.

To all whom it may concern:

Be it known that I, .Enxnsr W. LIND- QU'IST, a citizen of the United States, and resident of Lawrence, county of Essex, Commonwealth of Massachusetts, have invented an Improvement in Shake Arrangements for Cylinder Paper-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts in each of the several views.

This invention relates to paper machines of the cylinder type. In machines of this type as heretofore used, the wire cloth or foraminous hollow cylinder operative in the pulp vat has by its rotary movement through the pulp tended to cause the pulp fibers to arrange themselves in a direction parallel with the plane of rotation so that by far the greater part of the fibers in the paper sheet extend lengthwise thereof and comparatively few crosswise. This has resulted in making the paper strong and tough in one direction, z. e., to resist tearing across the, web, but comparatively weak to resist tearing in a' direction lengthwise of the weli. A prime object of the present invention is to provide means cooperative with the cylinder mold in the pulp vat for acting on the pulp in a manner so as'to arrange a substantial portion of the pulp fibers in a direction more or less lengthwise of the cylinder, 2'. 0., transverse of the web, thereby obtaining a crisscross arrangement of th fibers in the paper sheet and making the same of uniform strength'and toughness in all directions. To this end I provide moving elements operative .in the vat relatively close tothe cylinder periphery and provide means for reciprocating said elements constantly at amredetermined rate with respect to the cylinder rotation in the operation of the machine. A further object is to provide novel means for mounting and. operating such moving elements whereby the mounting therefor presents smooth continuous surfaces and is of a construction simple but efi'ective for the purpose in view. The foregoing and other 'ob-.

jects and advantages of the invention will 'more fully appear from the following de- -tailed description, and the distinctive features of novelty will be pointed out in the appended claims.

Specification of Letters Patent.

Referring to the drawings:

Figure 1 is a lengthwise vertical section of a mechanism constructed in accordance with my invention on line 11 of Fig. 3;

Fig. 2 is a fragmentary sectional view showing a detail of the mounting of the fiber arranging elements;

Fig. 3 is a transverse section on line 33 of Fig. 1;

Fig. Lis a plan View on a reduced scale showing a. modification;

Fig. 5 is a transverse section on line 5-5 of Fig. 4; and

Fig. 6 is a transverse section corresponding to Fig. 5 but showing a further modified form.

A pulp vat is indicated at 10 having a usual hollow wire cloth or foraminous cylinder 11 operative therein and mounted on a usual tubular shaft 12 deriving motion from the couch roll as usual and ournaled in suitable bearings 14- (not fully shown, since neither these nor the frame work of the machine are essential to an understanding of the invention). In accordance with my invention I provide .a reciprocatinm device shown as composed of three rods 15, 16, 17 spaced apart. around the periphery of the cylinder andmounted to slide lengthwise of the cylinder in bearings 18 at:the ends of the yet. The rods 15, 16, 17 are secured together for xsimultanpous operation at the back end of the machine by abar frame work 19 to. whic is pivotally connected at 20 an operating device shown as a pitman 21 pivoted at 22 to a crank pin carried by an operating shaft 23. and adjustable radially with respect thereto to vary the throw of said crank pin and hence the range of reciprocation of said device. The rods 15, 16, 17 have- .secured thereto a grid structurc,c mposed of a series of spaced apart strips o bands 24 which extend around the cylinder within the vat and in relatively close proximity to the cylinder as best seen in Fig. 3. The strips or bands 24 which are preferably relatively -thin, z. e., about one-sixteenth of an inch in the direction transverse of the cylinder, and considerably thicker, i. 0., about one-half inch in the direction of recipro cation, are secured to the rods 15, 16,. 17 preferably by being slipped thereon with lIll(I'InG(li"" spacing thimbles formed as short pip. cctions 25, with other longer Patented Dec. 2, 1919. Application filed April 1, 1918. Serial No. 225,972.

. relatively close proximity thereto.

similar pipe sections "26., at the end portioru of the rods and the whole Secured rigidly in aesenihlcd relation hp nuts :38 threaded on the ends of eaid rods, the trame 19 being also prcferal y clamped in place, by the same nuts. In this way as the grid structure formed by the strips; or llltltltrl 24 is reciprocated in proximity to the wire cloth cylinder 11 and during the rotation thereof in the ope ntion of the machine, the pulp fibers which would otherwise tend to arrange themeclves on said eylimler almost whollji circumterlmtiall v thereof, are largely turned into a more or less crosswise direction lay engagement with said at rip or lilade members so that as the paper wet) in talteu otl' of the cylinder the tihers are disposed in a cri scross; arrangement which li v properly proportioning the rate of reeiproeation of said grid with respect to the rotation of the cylinder may he made tairlv uniform with respect to the lengthwise and cronawiae components thereof. In Figs. land l shov a torn'l ot' the invention wherw in instead of having the three rods 15, H3, 17, l. mount only two rods to, 16" in bean ions 18'' at the top of the vat and secure in" spaced apart relation on these respective rods, curved strips or blades 24% .Z-t which may extend down iviththeir outer ends rel-- ativ'cly close togcther at the hottom ol' the cylinder as seen at 24;, these strips like the strips 2% curving around the cylinder in In this form of the invention the rods 15, 16" are individually reciproeated lrv pitinen 21, 2t" engaged with crank pins :22, E22 securtd to an operating shaft 23 at opposite sides thereof so that as said shaft is driven hy suitable means shown as a cone pulley 2?), the two grids formed by the two aeries of strips Ell; Qt nill he reiiprocated in opposite directions. The strips or hlades ill- 24t in this form may he secured to the rods 15, 16 in lilte manner as already dcscrilied and they are also preferably relatively thin transveieely and widerin the direction ol reciprocation as already descrihed, thoiqrl'i as to hoth forms of the invention ii; is to he understood that the particular proportions shown for these strips is merel illna trative and not 1' rictive and is intended to typit'" an} suitable elements for operating in PlUXllIllU' to the web formin rmold Wh ther such elementshe in the Form of hunts or wire or otherwise. .ln Fig. ti I show aiform wherein the'reciprocating strips 24 are mounted for a swingingmovement lengthwise ol the (-yliiuler mold in stead of astraight rectilinear movement' as in the first, described forms. Th ese strips t l ,7tllil illare here pivoted to the top of the vat at 1C and have upward extensions 24:" thereof ahove such pivots pivotally connected with reciprocating bars 15, 16 which may he operated similarly as the rods 15, 1G to keep the strips 2-H in constant swinging n10ve ment during the. o ieiation of the mechanism. The vat 10 is shown as (lividedby an intermediate partition 30 t form a drainage chamber 31 at the front end of the machine with a passage leading thereinlo from the interior of the evlinder as is usual and the couch roll I}! with the felt 33 cooperative with the cylinder mold 11 may he of any usual or suit-able character. I am aware that the invention may he embodied in other specific forms without departing; from the spirit or essential attrihutes thereof, and I therefore desire the present (IlllJOdllllQllt to he considered in all respects as illustrative and not restrictive, relerence heing' had to the appended claims 'ather than to the t' n'egoing description to indicate the scope, of the invention.

Having described my invention, what 1 claim as new and desire to secure by Letters Patent is: I

1. i.\ paratus of the kind described coniprising a pulp 'at, a cylinder mold mounted to operate therein and a grid mounted for l'(tl])l'( "ration transverse of the plane of cylinder movement. said grid eonsisting'in a pluralits of rods with spaced apart strips extending from said rods and curvingaround a substantial portion of the c \'linder mold, said strips being relatively thin, in the direction t ansverse of the cylinder, and substantially thicker in the direction of reeipria-ation wherehy requisite rigidity thereof is attained along with the eapahility of passing through the pulp liquid without unduly agitating same.

2. apparatus ot the kind described comprising a pulp vat, a cylinder mold mounted to operate tliereirn and means mounted in proximity to said mold and movahle. in a direction transn'ersely ot' the mold |uovement 'lor arranging the pulp t'llXlr'? transverse of the paper wel). said means including: a series of spaced apart strips. curving around a suhstantial portion of the cylin-,

der mold, said strips heing relatively thin in the direction transverse of the cylinder. and suhstantially' thicker in the direction ol reciprocalion whereby requisite rigidity t'liereot is attained along with the rapal ility of passing through the pulp liquid without unduly agitatjng same.

In testin iony wherof. I have signed my name to this specification.

l ll'tN nor W. ld.\' DQ U

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