US1775743A - Fiber-stock-refining apparatus - Google Patents

Description

Sept. 16, 1930. J wlENER 1,775,743

FIBER STOCK REFINING APPARATUS Filed May 14. 1928 2 Shoots-Sheet -1 John H. 61/661267,

2 Sheets-Sheet 2 Sept. 16, 1930. J. A. WIENER FIBER STOCK REFINING APPARATUS Filed May 14, 1928 fiver-7 ifoiznfl L056 77 67".

Patented Sept. 16, 1930 PATENT OFFICE JOHN A. WIENER, onL'AUREL, MISSISSIPPI IIBER-STOCK-REFINING APPARATUS Application filed Kay 14, 1928. Serial No. 277,444.

This invention relates to fiber stock refining apparatus, more particularly to refining en ines of the Jordan type.

The present invention constitutes an improvement over the apparatus described in my copending application, Serial No.

289,275, which was filed December 12th, 1927 In both inventions the stock is fed into the larger end of a refining engine similar to the usual Jordan in its construction, but in my present invention the plug, or core, is pro vided with a reversely tapered portion at its larger end in order to facilitate the entrance of the stock into the refining area between the core and the inner shell surface.

In my present construction, impeller blades are also secured to the lar er end of the plug to serve as a pump for orcing the stock into the space provided by the reversely tapered portion of the plug, but for this purpose straight impeller blades rather than curved blades have been found more satisfactory.

It is therefore an object of this invention to provide a refining apparatus of the Jordan engine type, wherein im roved means are provided for increasing t e efiiciency of the refining apparatus and the quality of the stock refined thereby.

Other and further important objects of this invention will -be apparent from the disclosures in the specification and the accom panying drawings.

This invention (Sin a preferred form) 13 illustrated in the rawings and hereinafter more fully described.

On the drawings:

Figure 1 is a top plan view of a fiberstock refining apparatus embodying the principles of my invention;

Fi ure 2 is a sectional view taken on line II I of Figure 1 with parts in elevation;

V Figure 3 is an enlarged sectional view taken on line III-III of Figure 2; and

' Figure 4 is an enlar ed sectional view taken on line IVIV of igure 2.

The reference numeral 1 indicates a base or pedestal adapted to support a fiber refining apparatus of the Jordan type, indicated as a whole by thereference numeral 2. Said refining apparatus 2 comprises a sectional casing 3 made up of an intermediate frustoconical shaped shell 4 having secured thereto at its smaller end a passaged section 5 forming a discharge port6 communicating'with the bore of the shell 4 by means of an opening 7, and a passaged section 8 joined to the larger end of said shell 4 through a spacing ring 9. Said section 8 is formed with an enlarged intake port 91 opening into the hollow interior 10 of said section. The stock admitted into the intake port 91 passes from the interior 10 of said section 8 through a central opening 11 into the space 12 formed 'by the annular spacing ring 9.

A plug 13, substantially frusto-conical in shape, is mounted axially Within the shell 4 upon a shaft 14 adapted to be driven through a coupling 15 and supported in bearing housings 16 and 17 from the base 1 in the usual manner. As is customary in engines of this type, means are provided for longitudinal adjustment of the plug within the frustoconical shell, as by means of the threaded shaft 18 and wheels 19 and 20 connected with the shaft 14 as shown. The specific means of longitudinal adjustment of the core, however, forms no art of the resent invention.

At the arger end 0% the core 13 there is formed a reduced portion 21 having a reverse taper 22 to that of the major part of the plug. There is thus provided an'annular wedgeshaped space 23 between the inner surface of the shell 4 and the reduced portion 21 of the plug for facilitating the admission of stock etween the refining surfaces of the plug and shell respectively.

The-refining elements comprise knives 24 v and 25 set in the plug '13 and along the bore of theshell 4 respectively in the customary manner. It should be noted, however, that the knives 24 positioned on'the plug 13 extend along the surface of the reduced ortion 21 as at 26 and are co-extensive with the length of said core.

By virtue of this construction, the portions 26 of the knives 24 act much in the same way as the runner blades of a pump to force the stock between the refining elements.

An impeller 27, comprised of radially extending straight blades 28 secured to the width of the annular chamber 12, leaving but a small clearance between the edge of said central opening 11 and the outer edge of the blades 28. A portion of each of said blades 28 near, the shaft 14 is cut away as at 29 to facilitate the flow of the stock into the annular chamber 12. The rapid rotation of the impeller blades results in the stock being thrown outwardly against the inner Wall of the annular ring9andinto the annular Wedgeshaped space 23 Where the stock is caught up by the revolving blade portions 22 and forced into the refining area.

The above described construction appears to prevent the stock from becoming bunched up before entering the refining area and furthermore, the present construction facilitates the even flow of the stock through the refining engine by building up a fairly constant pressure of the stock ahead of the actual refining area. By forcing the stock under pressure through the refining engine in a direction the reverse of that Which Would be normally effected by the centrifugal action of the rotating plug, the character of the refined fiber stock is considerably improved over the quality obtained in the usual form of Jordan engine.

This appears to be due to the fact that the normal centrifugal action of the plug is overcome by a fairly constant greater positive pressure brou ht about by In novel construction of the plug, so that tie fibers have a greater tendency to rub against each other I in their course through the refining apparatus.

I am aware that many changes may be made and numerous details of construction may be varied through a Wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. Fiber stock refining apparatus, comprising a shell having a frusto-conical shaied bore, a frusto-conical shaped plug adjusta bly mounted in said bore and having a reversely tapered portion at its larger'end and means for introducing fiber stock at the larger end of said shell for passage through said bore to the smaller end.

2. A fiber stock refining engine of the J or dan type, comprising a shell having a frustoconical bore provided with knives, a frustoconical plug also provided with knives and rotatably mounted Within said bore, said plu having its larger end substantially reduced Mississippi.

JOHN A. WIENER.

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