US1643657A - Paper-making apparatus - Google Patents

Description

, machine.

Patented Sept 27, 1927.

UNITED s'rxrlazsv PATENT. OFFICE.

RAL'PII E. HEISEL, OF CHILLICOTHE, OHIO, ASSIGNOR TO THE MEAD PULP & PAPER COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

PAPER-MAKING APPARATUS.

Application filed November 12, 1925. Serial No. 68,581.

This invention relates to paper-making machinery, and more particularly to that portion of paper-making machinery which has to do with the vfeeding of the paperinaking stock upon the forming part of the One of the principal objects of theinvention is to' provide an inlet which 1s constructed for easy adjustment to give suitable vcontrol of the flow of the stock from the iiow box to the forming Wire.

Another object is to .provide as a unitary structure a block member or closure adapted to be engaged in the opening of the inlet to control the width thereof. j

Other'objects of the invention will be apparent from the following 'description when taken in connection with the accompanying drawing, in which: I

Fig. 1 is a fragmentary elevational view of an inlet incorporating the present invention;

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1; and 1 Fig. 3 is a section taken onthe line 3-3 of Fig. 2.

Referring to drawing, the reference characters and 21 designate respectively the flow-directing apron and the top plate of'an inlet of the type shown in the co-pending application of Ralph E. Heisel, Serial No. 15,017, filed March 12, 1925. The Howdirecting apron and top plate, as shown, form parts of an inlet of the well-known Voith type, the top plate 21 being movably connected to the front of the flowbox, in the well-known manner. One end member of the flow box is indicated by the numeral 23 adjusting bolts 43 described below. As is well understood in the art, theseparts are connected with a fiow box containing pulp or other fibrous material suspended in Water, and constitute the orilice through which the pulp or paper-forming stock flows onto the forming wire 16 passing underneaththe front edge of the dow-directing apron, which edge is shown at the lleft of Fig. 2.

As is usual in inlet constructions of this character the top plate 21 is movably connected, or hinged, so as to swing up or down to adjust the ei'ective height of the opening or orifice between the apron 20 and the front edge of the plate 21. Any suitable means may be provided for adjusting the top plate and carries a lug 24C which receives the 21, such for example as the adjusting rods vMeans should be provided for closing the opening between the apron 2O and top plate 21, at the ends to prevent escape of the paper-forming stock except through the effective opening at the front edge of the plate 21, and this means is preferably made adjustable as at times it is desirable to vary the width of the inlet, and for this purpose I have provided a unitary block member or closure which ma be received and held between the flow-directing apron 2O and the top-plate 21 of the inlet. This block member is so arranged and constructed that it maybe adjusted to vary the width of the inlet opening without necessitating disassembhng or rearrangement of the parts of the inlet or affecting adjustment thereof.

The block member or closure consists of top and bottom plates 25 and 26 which are adapted to lie against the opposed faces of the inlet top-plate 21 and the flow-directing apron 20 respectively, as best shown in Fig. 2. The top-plate 25 is provided at its forward edge with an upturned iange 27 adapted to engage the front edge of the inlet top-plate 21 to restrain any tendency for`the top-plate 25 to slide rearwardly from the mouth of the inlet. The bottom plate is provided with a back pla-te 31 extending upwardly from the rear edge of the bottom plate 26 and formed or rigidly secured thereon, and is also provided at one end with a side plate 32 extending upwardly therefrom and preferably having its lupper edge inclined at an angle approximating the general angle of setting of the top plate 21 during operation. The back plate 31 and the side plate 32 are held spaced from the top plate 25 so as to permit movement of tlie top plate toward or from the bottom plate and the back and end walls thereof as the member 21 is moved to vary the eHective opening of vthe inlet. The top plate 25 is connected, to 100 and iexible material 33 constitute .105

n closure may be then slid along theinlet to l vstock flows onto the formingv wire. The

.Various clamping-strips or plates 35, 36 and 37, connected to the plates in any suitable manner.

The block or closure may be positioned in the inlet by inserting it between the flowdirecting apron'20 and the top plate 2lat the one'end of the inlet, the top plate 25 having first been compressed toward the bottom plate 26 to permit entry of the block within the space available. The block or vary the Width of the inlet opening .as desired. In order that the upper and lower plates 25 and 26 may be moved apart and into contact with the upper and lower members of the inlet, springs 40 having their ends positioned over restraining bosses 41, are provided which areunder such tension as to urge the members 25 and 26 apart during all adjustments of the inlet. And the .construction and arrangement ofthe parts, and the compression of the springs 40 is suicient to frictionally hold the block in adjusted position within the inlet. However, in some cases it may be desirable to rigidly secure the block in position, and for this purpose I have. provided thebaok plate 31 with a slot 42 which is adapted to receive a bolt 43 by which the block may be rigidly clamped against the edge of the flow box.

An important advantage of the present invention resides in the fact that this block may be quickly and easily placed in position, and that it may be readily adjusted to inlets of various heights, variation in height being taken up by the compression springs 40 and the iexible Wall material 33. Although the block has been illustrated in association with but one. end of the inlet, it is obvious that through a suitable reversal of parts it may also be applied to the other end of the inlet, or that'it might even be placed at points intermediate the ends of the inlet so aswto subdivide the inlet into a plurality of orifices each owing paper stock upon the forming wire to form a plurality of sheets of paper from a single inlet.

While the form of apparatus herein described constitutes a preterred embodiment of the invention, it is to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope ofthe invention which is defined in the appended claims.

IVhat is claimed is:

l. In an inlet for paper-making machinery comprising a flow-directing apron and a plate controlling the effective height of the inlet opening, means for varying the member adapted to be received between said apron and plate and to close off a portion of said inlet opening, said expansible member being adjustable along the length of y said apron and said plate ,to vary the Width of said outlet opening.

3. In an inlet for paper-making machini ery comprising. a flow-directing apron and a plate controlling the height of the inlet opening, means for varying the vwidth of said inlet opening, said means, comprisin a block member adapted to be frictionally held between said` apron and said plate to limit the width of said inlet.

4. In an inlet for paper-making machinery comprising a flow-directing apron and a plate controlling the height of the inlet opening, means for varying the Width of said inlet opening, said means comprising a wedge-shaped block adapted to be received between said apron and said plate.

5. In an inlet for paper-making machin.- ery comprising a flow-directing apron and a plate controlling the height of they inlet opening, means for closing oit a portion of said inlet opening comprising a back wall for bridging the space between the apron and the top plate of the inlet to intercept the flow of paper stock, and yielding means adapted to engage the inlet to retain said back Wall in position.

6. In an inlet for paper-making machinery comprising a flow-directing apron and a plate controlling the height of the inlet opening, means for closing olf a portion of said inlet opening comprising a back wall for bridging the space between the apron and the top plate of the inlet to intercept the ow of paper stock, and means engaged between. the opposite faces of the apron and the top plate to hold said back wall in position.

7. In an inlet for paper-making machinery comprising a flow-directing apron and a platecontrolling the height of the inlet opening, means for closing olf a portion of said inlet opening comprising a back Wallfor bridging the space between the apron and the top plate of the inlet to intercept the flow of paper stock, and means engaged between the opposite faces of the apron and the top plate to hold said back wall in position, said last mentioned means com rising I a bottom member rigidly connecte with the back plate and a .top member flexibly connected therewith.

8. Inan inlet for paper-making machinone of said first mentioned plates, andilexery comprising a. flow-directing apron and a ible means for' closingfthe gap between said 1U plate controlling the height of the inlet back and side plates and said other of the openin means or closing oi a portion of y first mentioned plates..v

5said in et opening comprising top and bot- In testimony whereof Il hereto aflix my tom plates adapted to engage res ectively signature.

I v the top plate and the aron of' t e inlet,

back and' side plates rigi y-connected with RALPH E. HEISEL.

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