US2281293A - Apparatus for delivering paper stock to paper making machines - Google Patents

Description

April 28,1942. 2,281,293 APARATUS FOR DELIVER'ING PAPER sTocK To PAFER MAKINQ MACHINES R. T. LANG Filed Dec. 15, 1937 3 Sheets-Sheet l l R. T. LANG APARATUS FOR DELIVERING PAPER STOCK TO PAPER MAKING MACHINES Filed Dec. 15, 1937 3 Sheets-Sheet 2 Fig. 2

W Q M /m Arm/my w55 28, 1942. R, T, LANG 2,281,293

APPARATUS PoR DRLIVRRING PAPER sTocK To PAPER MAKING MACHINES Filed Deo. 15,1937 s sheets-sheet s Fig.r3

rnc-E APPARATUS FOR DELHVEBING PAPER STOCK TG PAPER M t t. .r

G MACS Richard T. Lang, Heienheim on the Brenz, Gerto erican voith Contact Ce.

Ine., New York, N. Y., xsi-corporation ci' New' York Application December- 15, 1937, serieu Ne. massi. in Geny December 19, 1936 5 Claims.

This invention relates to apparatus for delivering paper stock to paper mag machines.

The object of the invention is to provide means to enable the stock discharging nozzle to be regulated in its position in respect to the paper making machine sieve orwire cloth. so as to 'be able to direct the stock stream to any desired direction of impingernent upon the sieve, and also to select the point of implngement as desired and most emcient for the production of the pulp mash on the sieve.`

In the use of larger or higher stock inlet boxes of the known kind, it iis dimcult to move the same, that is, to tilt them. Means to carry out suchv tilting are relatively complicated, and it is diflicult to adjust themlv to the required desires. These diiculties are all the greater, the higher such stock inlet boxes are made, and these have been made increasingly higher on account of the increase of workingl speed of modern paper making machines. It is, however, very important to be able to regulate the direction of the stock stream upon thev sieve, and also regulate the point of impact of the stock stream upon the sieve; and equally important to carry out these two regulations substantially at the Isame time.

'Ihe invention consists in the means of a stock delivery member which is independent of the stuff-chest, and winch member has a delivery. nozzle, itself regulatable, and is regulatable in vertical and horizontal directiors, as also swingable about a horizontal axis perpendicular to the direction of the flow of the stock.

The invention also comprises a novel stock delivery member which is so shaped as to hold a certain quantity of stock and to distribute it, as also to enable it to be quieted prior to its dis-f charge from the nozzle. More particularly, the delivery .member has an enlargement to act in the nature of a reservoir for the stock.

Iiuri'hermore,v the invention consists in the combination of such'a novel member with the known stuff-chest, the novel cooperation being attributable to a exible connection between the member and the stui-chest, such flexible connection enabling the member to be raised or lowered, moved forward or backwardsfor be tilted in any angular position within the sphere of operativeness of the cooperating parts described. To enable these objects to be attained and the means to be brought into being, a reconstruction of that part of paper making machines became necessary, which with other features o f the invention will be shown in the form of embodiments of the invention in the drawings, will be more fully described hereinafter, and the invention will be ilnally pointed out in the claims.

In the accompanying drawings, l Figure 1 is a side view of a novel stock delivery mechanism, as applied to the sieve and roll of a paper making machine;

Figure 2 is a plan view of the mechanism i shown in Figure 1; v

Figure 3 is a side view of the stock deliveryy responding parts throughout .the various views.

Referring to the drawings, and more particularly to Figures 3 and 4, the reversal-shaped stock delivery member Blaas a goiter-like en' largement B1, narrowing to a tubular portion IB2 forming the base of the reverse Z, provided with a ilange B3. From the enlargement B1 the member narrows into a smaller shape B4 as it ascends, and finally terminates in a beaklike nozzle portion C, which has a stationary under lip D and a movable upper lip E. Within the nozzleL portion C, a roll K, which is well-known, is placed: The shaft K1 may be rotated by known means. The interior of the member B may also be provided Vwith theknown partitions L. This roller K and partitions L serve to quiet the stock and to distribute it equally. Such devices are known and form no part of the present invention, and are referred to only for completeness sake.

Extending laterally from the hollow member B, are shafts H, which are suitably secured thereto, and which rest in bearings of the frame M of the stock feed mechanism.

The member B, being supportable by its trunnions or/ shafts H, the member may be vertically raised or lowered, horizontally moved forward or backwards, or may be tilted depending entirely upon the mechanism employed to carry out these movements. Such a variation of movements is possible, nrst because of the conception of such an independent stock delivery member, and secondly because of an elastic connection of this member with the stuff-chest A. The stuff-chest a.2 is suitably connected with an elastic or yieldable or flexible tube A, having a ilange A1 connected with ilange B1i of the member B.

Instead of using a stuE-chest A2 as shown in Figure 3, a pump A4 may be used as shown in Figure 1; the ilow of the stock in any case is the direction of the arrow A5. The flow of the stock is under pressure.

Mechanism for moving the member B is shown in Figures 1 and 2. The frame M has guide slots, and in these an anvil J is guided, which anvil J can be raised or lowered in a vertical direction, as indicated by the double arrow Jl-J". Upon the anvil J a sled O is guided, and this sled O may be moved horizontally, forwards and rearwards, to and fro, by suitable means indicated generally by Q. Devices like this, both for horizontal and vertical movement, are placed at each side of the mechanism, or of the sieve, though only one side is shown in the drawings.

The sled O is provided with bearings which support the trunnions H of the member B. To one or both of the shafts H, a segment of a gear N1 is secured, which meshes with a gear N2, and which gear N2 is driven by suitable mechanism, generally indicated by N. By rotating the gear N2, the segment N1 is moved, the shaft H rotated, and the member B tilted.

Finally, the upper lip E of the nozzle C is connected with means generally indicated by P to raise or lower the upper lip E, and thereby govern the amount of discharge of the stock.

those generally indicated parts are within the s ill of a mechanic. and naturally can be varied ad libitum, within the fundamental concept of the disclosed invention.

The .relationship of the nozzle E to the sieve F and breast roll G is shown in Figure 1.

It has been seen that the stock delivery member B is independent of the stud-chest. The

member is movable vertically, horizontally or f tiltable, either separately or simultaneously, in order to select the most favorable point, as well as direction of impact, of the stock stream upon the4 sieve F; variation in quantity entering also into these coordinates. Thereby it is possible to direct the stock stream beyond the curvature of the breast roll to any desired point or in any direction.

The embodiments described avoid the disadvantageous features of heavy stuff-boxes, with their heavy contents.

The member B with its enlargement, serves not alone as a guide nozzle considered in its entirety, but as a reservoir for the stock, to equally distribute it, and to make it quiescent prior to passing to the nozzle C.

Instead of the trunnions and the bearings therefor, other means may be used, as for instance, a ring around the member B, slidable in circular bearings, so arranged as to enable a universal joint action to take place. Similarly, changes can be made to raise or lower the member B, by suspension means on a monorail, or the like. Also, the upper lip can be moved by means on the member B, instead of those shown.

Such and other changes within the scope of the invention can be made, since the invention consists of the fundamental concept of the provision of a stock delivery member, independent of the stuff-chest, capable of being moved to any position to select the best direction of the stock stream and to select the best point of impact of the stock stream in respect to the plane of the sieve of a paper making machine. Other facets of the invention present the enlarged bowl of the member B, as also such others as are hereinbefore pointed out and hereinafter claimed. Y

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiments of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims:

I claim:

1. An apparatus for delivering stock tc a high speed paper making machine, comprising a vertically disposed container having a lower and an upper portion, and having a stock inlet at said lower portion at the rear of the container and a stock outlet at its upper end, a stock supply pipe, for supplying stock to said inlet, a stock delivery nozzle for said outlet, said lower portion being formed with a curved wall, at the front of the container, disposed in line with and opposite to said inlet for deecting the stock in an upward direction, and said upper portion having unimpeded communication with the lower portion and having substantially the same crosssectional area throughout its length, said area being smaller than the cross-sectional area of the lower portion which varies with the curvature of said curved wall.

2. In a pressure head box like claim 1, in which the stock supply pipe is flexible, and means for adjusting the pressure head box as an entity to vary the position of the delivery nozzle in respect to the screen of the high speed paper making machine.

3. In'an apparatus for delivering stock to a high speed paper making machine of the Fourdrinier type, having a vertically disposed container with an outlet nozzle extending along the width of the container at the upper front end thereof, and a plurality of stock supply pipe inlets at the rear lower end thereof, disposed in parallel relationship with the outlet nozzle, the combination of a first portion of the container of varying cross-sectional ,area adjacent the inlets and in direct communication therewith, the

. the ow of the stock entering the inlets, said enlarged portion acting as a reservoir for equally distributing the stock therein, with a second portion of the container of constant cross-sectional area adjacent the outlet nozzle, said second portion being vertically above the first portion and in communication therewith for receiving the stock therefrom and causing the stock to become quiescent prior to its passing to the outlet nozzle.

4. In an apparatus for delivering stock to a high speed paper making machine of the Fourdrinier type, having a. pressure head box with an outlet nozzle extending along the width of the head box at the upper front end thereof, and a plurality of stock mixture supply pipe inlets at the rear lower end thereof, disposed in parallel relationship with the outlet nozzle, the combination of a first portion of the head box of varying horizontal cross-sectional area adjacent the inlets and in direct communication therewith, the first portion'having a concave wallv substantially constant horizontal cross-sectionalv area adjacent the outlet nozzle, said second portion being vertically above the rst portion andin communication therewith for receiving the stock therefrom as it rises in the head box, the

casinos 3 l stock becoming quiescent for its passage to the outletnomle. j

5. In an apparatus for delivering stock to a high speed peper" making machine o1 the Fourdrinier type, having a, pressure head box with en outlet nozzle extending along the width for reversing the iow amifor equally distributing the nbers of the stock therein, a second por.- tion o the head box oi substantially constant horizontal cross-sectional'ereo. adjacent the outlet nozzle, said second portion being vertically above the first portion `and in communication therewith for receiving the stock therefrom, the stock becoming quiescent prior to its Apassing to the outlet nozzle', and means exterior of said head box for moving it as an entity for varying the position of its outlet nozzle in respect to the screen of such paper-making machine during its high speed operation, the variation in position of seid heed box being without changing the i5 character of the stock in said head box. l

RICHARD T. LANG.`

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