USRE6721E - Improvement in apparatus for expressing liquids - Google Patents

Description

PATENT 'Orrrcn0 LAURENT BnEvAL', or PARIS, rnAnc-E.

IMPROVEMENT IN APPARATUS FOR EXPRESSING -L|QU|DS.

Specilication forming part of Letters Patent No. 135,317, dated January 2H, 1873; reissue No. ,72l,"dated i November 2, ,1875; application filed April 26, 1875. i

To all whom it may concern -Be it known that I, LAURENTl BREvAL, of- `Faris, France, have invented certain new and and Fig.

'3 represents a section on an enlarged scale of the delivery-roller, the bar or plate, and the compressing and feed rollers, hereinafter described. y Fig. 4 represents a top view ot' the delivery-roller, the bar or plate, and the feedroller; Fig. 5, a side elevation of the press; and Fig. 6, a side or end view of the several rollers, showing the manner of connecting and supporting the bar or plate over and above the space between the feed and delivery rollers.

This invention has relation to that class of presses used in expressing the liquid from spent tan-bark or other like matter; and my invention consists, in part, of a pressure-roller arranged to slide vertically and automatically witbin the frame of the machine, in connection with a delivery-roller formed with annular flanges, overlapping the ends of and acting as guides for the pressure-rollers, so as to prevent any lateral displacement of the same in its automatic movement, and thereby retaining itin it-s proper position to insure at all times its surface bearing over the surface of the delivery-roller, the Bauges also serving the purpose of retaining the sheets of pressed material within the length of the rollers.

My invention also consists in forming such annular flanges, when overlapping the ends of the pressure-roller, with grooves upon their periphery, which act as gutters for catching and conducting oi such portions of the expressed liquid as may be carried up by and dropped from the ends of the grooves upon the face of the pressure-roller, which would 'otherwise fall upon and corrode the bearings.

My invention also consists,y in connection with a grooved or uted pressure-roller and a delivery-roller arranged with their 'axes in the same vertical plane, so as to bring one' direct- 'ly over the other, and a grooved or iiuted feedroller arranged in the front of and with its axis on a line between the axes of the delivery and pressure rollers, of -a bar or plate disposed above andover the vspace between the feed and delivery rollers, which serves to lclose the space between them, and act as a bed, upon which the lnelydivided particles of spent tanbark or other like material are sustained and subjected to a continuous pressure while being t'ed along by the grooves upon the faces ofthe feed and pressure rollers.

My invention also consists in hanging or pivoting the bar or plate in a manner so that when the material to be operated upon is forced by the movement of the feed-roller upon the plate or bar, and begins to be subjected to pressure, the plate or bar will be slightly tipped, causing its forward edge to rest upon the smooth surface of the delivery-roller, to afford suflicent vspace for the escape of a portion of the expressed liquid.

My invention also consistsiu forming such bar or plate upon its outer edge with serration's, to allow the escape of the expressed liquid between it and the face of the deliveryroller.

My invention also consists in a chute hinged to the frame of the machine, and provided with means of adjustment to the desired angle in relation to the delivery-rollenand retaining its upper edge at a suitable distance from the face of Athe same. y

My invention further consists, in connection with a anged delivery-roller and a feed-roller,"'of a pressure-rollerbaving its bearings in vertically-sliding boxes, and connecting with a syste-1:1 of Weighted levers, so that'the pressure-roller will be capable of automatic adjustment, for the purpose of permitting the distance between the said roller and the deliveryroller to accommodate itself to the constantlyvarying thickness of the material passing between them.

In the accompanying drawings, C is designed to represent the channeled or tluted pressureroller, arranged directly over the smooth-faced delivery-roller B;A also, as having the feedroller A arranged in lthe front of the bite of il i 6,721

said pressure and delivery rollers. Avbar or plate, D, is placed above and over the space between the feed-,roller A and delivery-roller B, and serves to sustain the finely-divided particles of material, and subject them toa continuous pressure, in 4their passage to the bite of the pressure and delivery' rollers.

It will be observed thatthe peculiar arrangement of the several rollers in relation to each other is s uch that the finely-divided particles of material receive a pressure suiiicient during their passage between them to desiccate such particles, without the necessity of a second operation or the application of heated rollers.

A hopper, T, is arranged over the feed and pressure rollers to receive the wet spent tan- '.bark or other matter, and convey it to the A bite of the same.l

The channels of the feed-roller I prefer to make helicoidal, or to arrange in long helices, as illustrated in Fig. 4.

7 j The bar or plate D may be pierced with numerous fine and conical holes d, each having vits larger diameter at the bottom, in order that they may not become clogged with bark while the machine vis in operation. This plate -o'r bar has formed upon its outer edge serrations, as shown in Fig'. 4, so that, when lthe edge bears upon the smooth surface of the delivery-roller B, there will be sufncient space l left between themvfor the ready escape of the liquid. The bar or plate is also loosely connected to the ends of the feed-roller A by At 'each end of the plate or harD are formed projecting pivots n, having screw threads thereon, and which pass through holes in the vplates E, and afterward fastened by screwnuts o. The plates E are formed with annular openings fitting in depressions or grooves upon the ends of the feed-roller A, which allows the same to revolve freely Without disturbing the position of the plates E.

4 The pivots n, which partially support the` plate or bar D, are placed at a suitable distance forward of the center of the same, creating a leverage, so that when the material to be operated upon is forced by the move` `ment of the feed-roller A onto the surface of the bar or plate D, and begins to be subjected to pressure, it will be slightly tipped and move upon. its pivots, so that its rear or serrated edge will ,restv'upon the smooth face of the delivery-roller B, while its front edge will be slightly raised from the grooved surface of the feed-roller A, thus affording sufcient lspace for the escape of a portion of the expressed liquid. flhis movement also lpreven ts any possibility of interference between the grooves of the feed-roller and the edge of the plate or bar; also, its position over the space between the delivery and feed rollers acts to sustain the iincly-divided particles of the material, and prevent their falling through. The roller B is provided at its ends with grooved annular ianges b b. These flanges act to re- -vtaiu the sheets of pressed material within the .a drain, conduit, or other length of the rollers, and overlap the ends of the pressnre-rollerO, for the purpose of acting as guidesto the same, and prevent any lateral displacement of the pressure-roller during its automatic movement within the frame of the machine, thereby insuring its en tire face coming in contact with the surface ofthe delivery-roller B. The grooves formed upon the `periphery of the flanges b b act as gutters for catching and conducting on" such portions of the expressed liquid from the ends of the grooves upon the face of the pressure-roller, which would otherwise fall upon and corrode the bearings, or else drip upon the sheet of pressed material as itv passes from the machine. The pressure-roller C has its journals supported in boxes arranged to slide vertically vand -automaticallyin guides within the frame H, by which the main operating parts are supported. Levers M M, by means of rods C3, serve to press downward the said boxes, such levers being connected, by rods r r, with levers S, arranged asy shown, and having weights T' suspended therefrom by rods R B. This system of weighted levers for applying the requisite pressure to the large expressing-roller C admits of such roller being self-adj usting to the constantl y-varyin g thickness of the sheet of tan-bark or other material passed between the rollers,v giving at all timesauniform and continuous pressure, whatever may be the thickness or quantity of the material introduced; also allowing the roller C to 'automatically rise with its bearings, and permit the free passage of large or very hard objects which might accidentally beintrod need into the hopper, thereby preventing the possibility of straining or otherwise injuring the operating parts of the press. Underneath the rollers B G is a suitable receiving trough or pan, Gr, provided with an educt, g, to lead into proper receptacle arranged below the same.

For imparting motion to the roller C, there is fixed upon its shaft a spur-gear, G1, engaging with a pinion, O2, upon a horizontal shaft, d'. This pinion C2 engages with a similar gear, b', connected to the shaft e, and a like gear upon said shaft engages witha spur-gear, B2, on the shaft of the roller B. Furthermore, on the shaft-e is a gear, f, engaging with a pinion, g', on a driving-shaft, h, arranged as represented, and provided with a y-wheel, V, and fast and loose pulleys P P. Gears a: y, upon the shafts of the rollers A C, impart motion to the feed-roller A. A chute, consisting of a flat plate, J,'is made adjustable by being hinged to the frame H, and lis provided with set-screws j, for regulating its inclination to the proper angle in relation to the lower delivery-roller B, so that its inner edge will not rest upon or touch the face of the roller, but will he maintained at a slight distance from it, so as to leave a small clear space between its inner edge and the face of the roller for the escape of the expressed liquid to the recep- -tacle provided for it under the press; otherwise a considerable portion of the liquid, which naturally flows upon the face of the lower delivery-roller B, would be reabsorbed by the hopper, from whence it\- is delivered between the two rollers A O, and there receives its 'first pressure, passing in its course over the bar or plate D, tothe `bite of the rollers B C, and by them is still further compressed, after which it passes over the inclined chute J to any suitable receptacle that may be placed j there to-receivc it.

The press may be used, if desired, for e1;-

tracting the juice from sugar-cane and various other vegetable matters.

Having now` fully described the construction and operation of my invention, what I- claimas new, and desire to secure by Letters Patent, isv 1; The combination, withv a. pressure-roller arranged to slide vertically and automatically y within 'the frame of the machine, of a delivery:

roller haoving annular flanges, which overlap the ends of the pressure-`roller, and act as guides to prevent any lateral displacement of the sama/substantially as und for the purposespecified.

2. The delivery-roller ha vingannular flanges,

which overlap the ends of the 'pressure-rol1er, and formed with grooves upon their periphery, for the purpose ofconducting'oif such portions Aof the expressed liquid as may be carried up by and dropped from the ends of the grooves upon the face .of the pressure-roller,substan-V tially as and for the purpose set forth.

' ouml Y a v 3. The combination, with a delivery-roller .and a grooved'or iluted pressure-roller, having their axes in 'thefsam'e verticalV plane, and a grooved or uted feed-roller arranged in the front of and with its axis on a line between ythe axes' ofcthe delivery and pressure rollers,

of a bar or plate placed above and over the space between thefeed and delivery rollers, to

sustain the livery-divided particles of material I "and subject them to a continuous pressure while they are fed along vby the grooved surfaces ofthe feed and pressure rollers, substan tially as and for thepurpose;set forth.

4. The combination, with afeed, apressure, and a' delivery roller, of a pivoted bar or plate, substantially as and for the purpose set forth.

5.' Ihe combination, with a delivery-roller,

of a-pivoted bar or plate formed with serrations upon its outer edge, to allow `the escape.

of the expressed liquidl between it and the face of the delivery-roller, substantially as and for the purpose specified.

6. The combination, with a delivery-roller, of a hinged chute, provided with a means of adjustment, substantially as and for' the pur-- pose set forth.

- 7'. The combinatiomwithaanged delivery- I roller? and` a feed-roller, of a pressure-roller, having its journals inY vertically-sliding" boxes,

and connecting with a system of weighted levers, substantially as andfor the purpose described.

-In testimony that I claim, the above I have lhereunto subscribedmy name in the presence of two witnesses.

' LAURENT BREvAL.

I Witnesses:

p M. TARMEUX,

LoUs ALEXANDRE.

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