US1714641A - Apparatus for making fiber board - Google Patents

Description

May 28, 1929. w. M.'SHOEMAKER, JR

APPARATUS FOR MAKING FIBER BQARD Original Filed Aug. 13, 1927 3 Sheets-Sheet a Q 1 nu O 0 y 28, 1929- w. M. SHOEMAKER, JR 4,641

APPARATUS FOR MAKING FIBER BOARD Original Filed Aug. 13, 1927 -3 sh t -sh t 2 y 1929- w. M. SHOEMAKER, JR 1, 14,641

APPARATUS FOR MAKING FIBER BOARD Original Filed Aug. 15, 1927 3 Sh ts-sh t 5 I departing from Patented Ma '2 1929.

WILLIAM ufsnomuaxnn, m KENNETH. saunas, rnnnsmanm, assrenon 'r o NATIONAL VULCANIZED FIB P ORATION OF DELAWARE;

an oomarnr, or wmiime'ron', minawnnn, A com.

APPARATUS son mine FIBER-Bomb.

Original applicatiohfiled-Augnst 13, 1927,.Serlal'No.

y invention relates to apparatus for rank ing-fiber board. In the manufacture of fiber board,-sheets of unsized and. unloaded paper consisting. usually of cotton celluloseare employed. A

plurality of sheets may be employed and united, or a singlesheet may be employed and wound about a drum a suflicient num ber of' times togproduce the thickness of 10 board desired," or the completed board may consist 'of a'sheet otsingle thickness cured in known manner. such manufacture the cellulose she ets'are firstsubjected to the -ac-- tion of-a suitable chemical, for example,

' zinc chloride in solution, which is quite generally employed. After' having been thus treated, the'sheets are subjected to heat and pressure, whereby, if a plurality of sheets fare employed, union thereof isefiected; or,- if a single sheet is w'ound'abou'ta drum, as above suggested, union of the overlying plies is eflec-ted." 1 a I The generalobject of the-invention is to provide a novel constructionof apparatus. whereby. the cellulose sheets, after having been subjected to the 'action of a chemical :in solution, may be conveyed to the pressure means without the 'necessity'of bending the same to such an extent as to form sharp angles therein, andalso without. the neces- 'sity of subjecting the same to unnecessary stretchingitension; also to provide av means for applying heat uniformly to both sides 'ofa sheetpr plurality of sheets of cellulosic material which -may be-united to form fiber board or fiber sheet having improved structural characteristics. v s To the foregoing and other'ends my in 'vention .comprehends the construction. of apparatus as disclosedand described herein and as particularly pointed out in-the claims. I w 1 f m It will'be understood that my invention is susceptible ,ofembodimenfin other-forms of apparatus than that disclosed herein and that changes in theconstruction may be made within the scope of the claims without he said invention or' the princi lethereofi. 3

Int ejdrawingsz. A 1 Fig. 1 is-a view partly in side elevation as, saa. Serial Roi-250,121.

showing more 212,658. mm and 1:

and partly in longitudinal sectional .elevationof a portion of the apparatus in which the invention is embodied; L x i Fig. 2 isa longitudinal sectional elevation of the remaining portion of the machine; Fig. 3 is a transverse sectional view taken on the line 33 of Fig. 2; Fig. 4 is'a' longitudinal sectional view sim=' ilar to thatshown in Fig. 2 but showinga modification of the structure; and

Fig. 5 is a transverse sectional view of l a fragmentary portion of the structure clear-1y a detail 'of the constructioni I It will be understood that if Figs. 1 and 2 be so placed in'relation to eachother that thedot and dash lines A --B overlie each other, an illustration of the complete, machine will be obtained.

In the drawings I have shown a plurality I of rolls =1 of paper which'are mounted upon rotatable shafts. 2, which are mounted at f their opposite endsin "bearings supported upon the oppositeside members 3 of the frame structure comprising uprights 4. L p The sheets of paper 5 which are drawn from the rolls 1 over guides 6, are mounted, one above the other, upon the frame structure of the apparatus. Fromthe guides 6- 0 the sheets 5 extend downwardly. and are guided through a body of a suitable liquid solvent 7, usually water,.containingfasuit, able chemical in solution, for example,-zinc' chloride, which solution usually, is of a x strength or density ;of approximately 70. degrees Baum. The liquid solution is contained in a receptacle 8 of 'usua'lconstru'ction. The sheets 5 are guidedthrough the solution"? underneath guide rods 9, whichv are supported attheiropposite ends in-the opposite sides of A-shaped frames 10, only?" one-of which is shown. These frames are suspended within the receptacle or container S by means of parallel links 11, which 5 links are adapted to erpivotally. operated bymeans of handles or levers 12 to elevate the said frames. together with therods car?" ried thereby to positions outside of the re ceptacle or conta1ner'8 and to lower. the same 1; thereinto. The saidv frames are moved [into elevated position for the more convenient threading of the sheets underneath the guide rods 9, previously referred For convenience in effecting the elevation and indicated.

From .the guide rods 9 the sheets are conveyed rorwardly to and over guide rods supported upon. the frame 'structure of the machine and from the latter they extend in a slightlydownward direction under neath horizontally arranged tubes mountthe plane in which the rods -Each sheet extends under a tube as shown.

end by means ed ina plane substantially parallel .with

Each of these tubes is connected at one pipe 21 with end' of which isconnected one end .ofa liquid in small streams. The openings are so place in the said tubes or pipes 20 that the small;

liquid supply pipe 23. The'lower end of the latter pipe is connected to the discharge side of a suitable pump 24, the opposite side of which is in communication with a tank 25 containing a liquid26 which is adapted to be heated by a steam coil 27-. The supply of liquid to the tubes 20 is adapted -to be controlled by. valves 28. The upper end of the mauifoldpipe 22 is provi ed with an uplwardly pro ecting tubular extension 30 w pipe 31 which is adapted to discharge the overflow liquid into a receiving tank orireceptacle 32. The height fold pipe 22 is such as to provide in the latter a suflicient :head to-exertvpressure in the tubes 20 to effect the discharge of the therefrom through the openings 35 streams of liquid issue therefrom at angles I of about degrees to horizontal planes.

. underneath said tubes.

"l p y against the under sides 0 Pparent from an in-' I will be noted.

Thestreams of liquid which issuefrom the respective tubes or pipes 20 descend upon the top sides of the sheets which are guided The streams which issue from the intermediate tubes are .pro-

the sheets as will spection of the drawings. that the lowermost of t e pipes 20 is located underneath the owerniost of the sheets 5, which are guided underneath series of tubes. or

the said tubes, and its purpose is to provide means for'projectin'g. streams of theliquid against the under side of the lowermost sheet. A' valve controlled pipe 40 is connected at one end of the pipe 23, the oppo:

site outer end "thereof terminating in the receptacle or tank 32.- Plates 41 are pro of-sheets 5 in adjoining relation to theoposite ends of the series of tubes or pipes 20 dr the purpose of guiding 4 may splash or escapeoutwardly from the opheating coil 27 15 are mounted. streams of liquid discharged from the tubes of a short branch connecting a manifold '22 to thelower.

of the tubular-ex tension 30 above the upper end .ofthe mad-- the liquid whichthrough a pipe 42 to the receptacle 25 reviously or catchingthe liquid which may escape from thesheets 5 I have provided a, receptacle 45 from whichthe liquid maybe discharged throughan outlet 46' into thereceptacle or tank 25.

25 is heated, as above stated, by means ofa to a temperature such that the or pipes 20 onto and agalnst the upper and of the sheets intothe receptacle referred to. As a further" means The liquid 26 withinthe receptacle or tank .receptacle. or tank 32 is conveyed therefrom. I

lower sidesof the sheets 5 will impart theresaid sheets at a temperature which may range about 38 degrees centigrade to about 93 de- Any suitable liquid may be employed, but that which grees centigrade.

at present is preferred'by me is one containing a solution of zinc chloride, thesamw as: thatemployed 'in the receptacle or tank B for the Initial treatment of the sheets. After the sheets have been in the. manner heated by the application .of the heated liquid thereto,

ich. is 1n communication with an overflow :heretoforedescribed,they are conducted in to the requisite temperature suitable to be employed inthe manufacture of fiber boards convergent relation to eachother, as shown, and are -brought together upon the upper side of the upper cylinder or drum of the co-actingor co-operating pressure drums or cylinders 50 and 51. These cylinders or drums preferably 'shouldbe heated. The

overlying sheets extend around the outer half portionof the cylinder or drum 50 and are subjected thereby to a pressure requisite for effecting union thereof to produce the product, namely, fiber board or vulcanized fiber; After havingbe en thus united the sheet is cut into desired lengths, washed' and. other-vgisetreated in the usual known manner.

d are carried.betweenthedrums'50 and- 51 and" "Instead of conducting the sheets 5 fromf the guide rods 15; downwardly through a. body of liquid containing a suitable chemical in' solution as shown tion containing-the chemical, for example, zinc chloride, is 'supplied'by means of a pipe 63 having connection atitslower end to the I in a plane substantially paral-- L pipes61' to a manifold discharge side of a suitable pump '64, the

opposite side of which is {communication a; receptacle 65 containing the solution with 66. Any suitable liquid solvent and anysuitable chemical may be employed but usually water is employed as the solventand zinc Chloride as the chemical. The solution gen'erally is employed at a strength or density of about 70 degrees .Baum and at ordinary room temperature but the temperature may range from room temperature to a temperature of approximately degrees centigrade. The supply of liquid solution to the pipes 60 is controlled by valves, not,shown,"-

which are identical with the; valves 28, to.

which reference has been previously made.

for controlling the admissionor supply of solutionto the pipes 20.

The upper end of the manifoldv pipe 62 is provided with anupwardl-y projecting tubular extension '67 having connection at its upper end to a 'waste'pipe 68,-.which is adapted to discharge anyover-flow of the solution into a, receiving receptacle or tank 69. I A.

valve controlled pipe 70 is connected at one end to the pipe 63, the opposite end thereof terminating within-the receptacle or tank 69. -The tubes 60'are provided with openings 71 (like the openings 35 in'the tubes 20) which are adapted to discharge the solution v onto and against the upper and lower sides of the sheets 5 in the same manner as has been described in connection with the said tubes 20.

In order that any liquid which may escape from the opposite. sides or edges of the portions of the sheets 5 i'n adjoining relation shown.

to the op'osite ends of the tubes 60 maybe directed into the receptacle or tank 69 I have provided plates 72, only one of which" is n will be'noted thatfin the as-.1 a construction as illustrated in Fi 4 the sheets 5 are bent but slightly in 1; (air passage from the guides 6 underneath the tubes or pipes 60 to=the tubes "or pipes 20. By thus avoiding the bending of the sheets the pulling tension necessary to the; drawing of the sheets through the apparatus is de-- creased whereby liability of the cracking or breaking of the sheets is decreased;

In order to prevent waste of the solution which may escape from the portions of the sheets 5 which are located over the gap between either the tank or receptacle 8 or.69 and the tank or rece tacle 32 I have provided a bridging plate 3, the opposite ends of which are flanged, as indicate It will be seen that by my invention I have providedan apparatus ofnovel and relatively simple construction which may be employed to great advantage in the inanu facture of fiber board. I

This application is a division of my aptates filed August 13, 1927, Serial No.

I lication for Letters Patent'of the United 12,658, and covers subject matter disclosed in the said application.

.'against the said sheets.

, Having thus described my inve ntion, what I claim and desire to secure by Letters Patent is:

1. In apparatus-of 'thecharacter described,

the combination of means -for-the application of a liquid containing a suitable chemi- I, goal in solution to each of a plurality of sheets of cellulose pap'er,-a plurality of tubes upported in parallel relation to each o't er,

which tubes are provided with openings for the discharge of a fluid therefrom,imeans for-" supplying fluid under pressure to the saidtubes, vand -means'jor heating said fluid and means for thereafter effecting union of said sheets. I I 2.1 1 apparatus of the character described,

the combination of means for effecting the sheet of cellulose'p'aper the said liquid beapplication of a liquid containing a suita ble chemical in solution to bothsideaof a a Q ing at a temperature which may range fromroom temperature to a temperature of apsuitable heated fluid against both sides of said -sheets,thie temperature of'said streams beingsuch asto heatthe said sheets'to-a proximately 35' degrees centigrade, means i "for discharging and; directing streams of a temperature requisite in the manufacture of heating the liquid previous to its discharge fiberboard ,or vulcanized fiber, and means for 3. Inapparatus of the character described,

,thecombinatio'n of aplurality of series of tubes, the tubes of each series being arranged'in parallel relation with each other and each tubebein providediwith openings to permit the disc arge. of'a liquid there-- -from, means for conducting a plurality of I sheets of paper underneath the said tubes,

the said sheets passing first under the tubes of the other series, means for supplying un- 10.5 of one series and thereafter'under the tubesder pressure a liquid containing a suitable 7 chemical in solution to the tubes of the first series/which liquid is discharged through the openings of the said tubesagainst bothsides of each sheet of paper, means for supplying heated liquid of suitable character under pressure to the tubes of the second named series which is discharged through the 0, en-

of paper, the temperature of said liquid be.-

ing such as to heat the said sheets to a temperings therein against both sides oteach 's eet ature requisite in the manufacture of fiber board or vulcanized fiber, and means f0r'\12c thereafter efi'ecting union of said sheets.

4. In apparatus of the character described,

the combination of a plurality of series of spaced relation to. each other an being prothevtubes in each series, a series ofguide the combination of a support for rotatably adapted to be discharged, means for conduct ing a plurality of sheets of paper underneath rods for guiding the said paper sheets to an adjoining. series oi tubes, the said guide rods and the plurality of series of tubes being 1 located .in substantially the same horizontal plane, means for supplyin liquid to the said tubes from which it 1s ischarged against said sheets, and means for applying heat and pressure to the said sheets after. they. have passed from the last of,the said series of.

tubes to effect union thereof v 7 L 5;, In apparatus of the character escribed,

the combination of a series of tubes supported ina planeforming an acute angle A with the horizontal plane which tubes are.

provided with openings from whicha liquid under pressure is adapted to be discharged,

, means for supplying "saidliquld under pressure to said tubes, means for conductingcellulose sheets between the said tubes the said me'ansincluding a'series of guide rods supported 1n parallel relationv to the said tubes, means for applying a chemical insolutionto the said sheets in advance of the ing heat and pressure ,to the said sheet after 5 l the application of liquid thereto, the said,

last mentioned means being located in prac- 45 tically the same horizontal lane as that of the tubes and the guide ro whereby in its passage through the said apparatus the sheet is subjected to minimum bending.

. In testimony that I claim the foregoing as 50 mj invention. 'I have hereunto signed my name this 24th day ofJanuary, A.- D. 1928.

v wiLIIiAM' M. SHOEMAKER,; JR.

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