US1183273A - Suction-box for paper-machines and the like. - Google Patents

Description

A. E. BINNS.

SUCTION BOX FOR PAPER MACHINES AND THE LIKE.

APPLICATION FILED AUGJB. I9I5.

Patented May16 1916.

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A. E. BINNS. SUCTION BOXJFOR PAPER MACHINES AND THE L'IKL'.

A. E. BINNS.

SUCTION BOX FOR PAPER MACHINES AND THE LIKE. APPLICATION FILED AUG.18. 1915.

3- Patented May16,1916.

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SUCTION BOX FOR PAPER MACHINES AND THE LIKE.

APPLICATION FILED AUG.I8,1915. 1.13.273. Patented May16, 1916.

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sucnow BOX FOR PAPER MACHINES AND THE LIKE APPLICATION FILED AUG-.]8 1915- 1,183,273, Patented May 16, 1916.

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SUCTION-BOX FOR PAPER-MACHINES AND THE LIKll aieaaas.

Specification of Letters Patent.

Patented May 1%, H916.

Application filed August 18, 1915. Serial No. 46,045.

To all whom it may concern:

Be it known that IVARTHUR E. BINNS, a citizen of the United States of America, residing at Norwich, Connecticut, have invented a new and useful Suction-Box for Paper-Machines and the like, of which the following isa specification.

My invention relates to improvements in paper making machinery and particularly to an improved suction box for extracting water from the web. I

The invention is of particular utility when paper making machine of the Fourdrinier type, although in a broad sense, its use need not be limited thereto. It is the present practice to use suction boxes in such machines, but such boxes are constructed commonly with rigid non-yielding sides over which the wire blanket upon which the pulp is deposited travels with relatively great friction, which not only requires relatively great power to overcome, but also very rapidly injures the wire mesh so that in a comparatively short time it is necessary to. discard the same. Again, by the use of such a box the degree of suction or vacuum that may be employed is comparatively limited, because if a high vacuum is employed it will cause such friction as to disastrously retard or stop the machine. By my improvement theseobjections are overcome", and I am enabled to maintain-a relatively high vacuum, and, therefore, accoinpli'shwith one box what it would require a number of boxes of the old. type to accomplish. Again, my improved. construction is such that the box may be adjusted in a variety of ways so aszto adapt the same to varying conditions. Again, my

improvement may be used in such a way as to perform the function of a couch roll while still performing the further function of removing air blisters and the like. It will thus be seen that my improved apparatus has an exceedingly wide app ication, even though it is especially designed and adapted for the purposes first mentioned.

In theaccompanying drawings: Figure 1 i is a diagrammatic view conventionally reptit resenting part of a Fourdrinier machine with my improved suction apparatus in place, there being in this instance, two units showing. I Fig. 2'is a similar v1ew show1nganother application of one of the unlts. F1g. 3 is a relatively enlarged detail view partly in section of one end of my improved suction box. Fig. 4 is a. similar view showing certain parts in elevation, other parts being removed. Fig. 5 is an end elevation, partly 1n section, on line 5-5 of Fig. 3. Fig.6 is a cross'sectional view, on the line 6-6 of Fig 3. Fig. 7 is a section on the line 7-7 of F1g. 6. Fig. 8 is a detached detail. Fig. 9 is a section on the line 99 of Fig. 8.

1 represents the usual wire mesh blanket upon which the paper pulp is deposited in the form of a wet sheet from which the Water must be extracted at the proper time. This blanket 1 may have the usual supports, and may be driven from a suitable source of power...

2 conventionally represents part of the frame of the paper making machine, upon wh1ch,1n Fig. 1, is shown to be mounted two suction box units arranged underneath the blanket 1 so as to extract water from the pulp sheet deposited thereon.

In Fig. 2 I have illustrated one of the units as in Fig. 1, the other unit bein reversed so as to bear upon the inside 0 the lower lead of the blanket 1, in this case supported by a cylinder 8. As conventionally illustrated, these two arrangements of the suction box units show that the application of the same, is not confined to a single use or single location.

It will be sufiicient to describe the preferred construction of a single unit, and since both ends of the suction box substantially correspond, it will be suflicient to describe in detail the construction of one end only. For the purposes of a detailedde scription I shall refer to the unit as applied in the position shown in Fig. 1. Each unit includes the three rolls 15 and 6. The rolls 4-5 are separated from each other and mounted at their ends in suitable bearing boxes 7-8 respectively, which bearing boxes are preferably adjusted and include an cecentric adjustment later described. The roll 6 is located between and makes contact with the rolls4 and 5. 9 is a saddle or mounting for the unit, while 10 is a frame carrying the rolls 4 and 5, said frame being provided with a sleeve 11 which rests upon the saddle 9 and may be clamped in place by a cap 12. By loosening this cap the angular position of the frame 10 may be adjusted as desired.

The blanket 1 is supported and travels on the rolls ls-5. From the foregoing it will be seen that if the ends of the space between the blanket 1 and the rolls 456 is efiecthe latter being I tively closed, and a partial vacuum is created therein, the water in the web deposited upon the blanket 1 will be extracted. To that end I provide eifectiveclosures which are so con- 5 structed and arranged that they may be adjusted to and fro for the purpose of adapting the box to sheets of different widths.

Referring to Fig. 3, 13 is an exhaust pipe carried by the frame and projecting well 10 into the aforesaid space. 11 is a pipe closely fitting the pipe 13, but longitudinally adjustable thereon. The closure or deckle head is mounted on the pipe 11, and this deckle head is preferably constructed as 15 follows: It provides a center core 15 which is hollow and which conforms in outline to the cross sectional outline of thespace between said rollers and blanket. 16 is a plate shaped to fit the center piece or core 15, and provided with a hub 17 that may be permanently secured on the tube 1-1. The head 16 is at its inner edge preferably provided with a curved bearing 18 to provide an easy bearing surface for the blanket 1 to travel on in the event said blanketsags. At the opposite side of the core piece 15 is another head 19, which in turn is fixedly secured to the tube 14. I preferably provide between the core piece 15 and each head 16-19 a suitable packing material indicated at 2020. This packing material may be made of such a material as isbest adapted to the particular rolls employed. For example, it may be rubber, leather, or some 36 relatively soft metal, such as lead. The core piece 15 is provided with ports 21. Water is preferably supplied to the interior of the deckle, for example, by means of a pipe 22, which water will escape through the ports 21 and may serve as a supplemental means to seal the joint between the deckle head and the adjacent rolls, and incidentally the presence of a thin film of water between said parts serves to lubricate the same. 23 is a stufiing box that may be mounted upon the hub of the head piece 19 to prevent air leakage between the tubes 14-43. 24 is a screw rod carried by the head piece 19 and projecting through the frame 10 so as to take into a threaded sleeve 25 which may carry a hand wheel 26 suitably mounted upon a bracket 27 carried by the frame 10. 28-28 are collars on the sleeve 25 so that the said sleeve will not move longitudinally. As the hand wheel 26 is rotated, it is obvious thatthe deckle will be moved longitudinally on the exhaust pipe 13, and relatively to the several rolls 45 and 6, and the blanket 1, so that said suction roll apparatus may .be adjusted for sheets of different widths. 13 represents the outer end of the exhaust pipe 13, and any suitable vacuum creating apparatus may be connected to the. pipe 13 for the purpose of producing the desired degree of vacuum under the blanket 1. I have said adjustment is that each end of the suction box may correspond in construction, but of course it will be understood, that one exhaust pipe 13 might be omitted in some instances.

Referring to Fig. 5 wherein I have shown the bearing boxes 7 and 8 in detail, it will be observed that the bearing box 8 is substantially square. and is adjustable to and fro between guides 29-29 by means of a screw 30. 31 is an eccentric bushing which is carried by the box 8 and which may be rotatably adjusted therein whenever such required.v This eccentric bushing 31 carries the end of the arbor 5 of the roll 5. so

As shown in Figs. 1 and 5, 32'is a threaded sleeve or nut mounted on the outer end of the bushing 31 whilethe inner end of the bushing is provided with a flange or head 33. By loosening the nut 32 the bushing 31 may be adjusted in the box 8, and by tightening said nut, said bushing may be locked in the desired positionv of adjustment.

\Vhen my improved suction box is used as in the manner shown in Fig. 1, the rolls 4 and 5 should have a brass surface, and the roll 6 should-preferably have a relatively soft surface, such as rubber. \Vhen a suction box unit is to be used as acouch, as illustrated in the-lower part of Fig. 2, it would be. of course, preferable to have the surface of the rolls 1 and 5 rubber covered. These obviously are-such changes and modifications ascoul'd be made by the experienced mechanic familiar with this art. In operationit is obyiou'sthat friction is reduced to a minimum, and that any desired degree of vacuum may be put on without overloading -or cramping the machine, or without injury to the wire mesh blanket 1- In the construction of the rolls 4 and 5,

vI prefer to slightly crown the same,,that is to say, I very slightly increase the diameter from the ends toward the middle, so as to compensate for any tendency to sag in the event the rolls are made for wide machines. Since thesurface of the roll 6 is relatively soft even though the said rolls may somewhat sag and still may be caused to hug tightly enough together to prevent air leakage.

What I claim is:

1. A suction box comprising a supporting frame, a roll carrying frame mounted thereon, three rolls carried by the last men- 12 tioned frame, two of said rolls being separated. from each other, means for independently adjusting the ends of both of the last mentioned rolls both horizontally and vertically, a deckle. head at each end of .said box and fitting substantially air tight against the adjacent sides of all of said rolls. j

2. A suction box comprising a supporting frame, a roll carrying frame mounted therearaaara on, three rolls carried by. the last mentioned frame, two of said rolls being separated from each other means for independently adjusting the, ends of both of the last mentioned rolls both horizontally and vertically, a deckle head at each end of said box and fitting substantially air tight against the adjacent sides of all of said rolls, and means for adjusting said deckle head longitudinally relatively to said rolls in the space between said rolls.

3. A suction box comprising a supporting frame, a roll carrying frame mounted thereon, three rolls carried by the last mentioned frame, two of said rolls being separated from each other, means for independently adjusting the ends of both of the last mentioned rolls both horizontally and vertically, a deckle head at each end of said box and fitting substantially air tight against the adjacent sides of all of said rolls, with means for feedin water to that part of said deckle head acing and in'contact with said roll.

t. A suction box comprising a supporting frame, a roll carryin frame mounted thereon, three rolls carried by the last mentioned frame, two of said rolls being separated from each other, means for independently adjusting the ends of both of the last mentioned rolls both horizontall and vertically, a deckle head at each end of said box and fitting substantially air--tight against the adjacent sides of all of said rolls, said .said rolls.

5. A suction box comprising a supporting frame, a roll carryin frame mounted thereon, three rolls carrie by the last mentioned frame, two of said rolls being separated from each other, means for independently adjusting the ends of both of the last mentioned rolls both horizontally and vertically, a deckle head at each end of said box and fitting substantially air tight against the adjacent sides of all of said rolls, an exhaust pipe passing substantially air tight through said deckle head and serving as a guide therefor, with means for shifting said deckle head longitudinally on said exhaust pipe.

6. In a suction box of. the character described, a roll carrying frame, three rolls carried thereby, two of said rolls being spaced from each other and both being in contact vwith the third, a deckle head adjacent to the end of the space between said rolls, three surfaces of said deckle head being conformed to the adjacent rolls, the fourth surface of said deckle head being substantially flat to form a blanket support, the inner edge of said surface being rounded to form a curved bearing support for said blanket.

ARTHUR E. BENNS.

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