US117136A - In processes - Google Patents

Description

-WQA AMSON. v PROGESSOF OBTAINING PAPER'SIO'QK FROM W001), &0. 1 6: V v Patented'JuIy 18,487

b str 32% are WILL'EAM" Ali AMSGNfOF PHILADELPHIA, PEJYSYLVANIA. 7

Specification forming of Letters Patent- No. 11?,i36

r-other fiber-bearing vegetable substance into peper-sto'ok, by subjecting it, substantially in the manner described hereafter, to the action of hydrocarbons, by preference naphtha, benzine, benzole, gasoline, or other equivalent volatile prod not of the distillation of petroleum or coal; and the object of my invention is to obtain from Wood or other fibrous vegetable matter, at. a cheap rate, paper-stock of a superior quality. y In carrying my invention into eii'ect I have used the apparatus illustrated in the drawing; but it should be understood in the outset that I do not restrict myself to that or any other apparatus, for many different appliances may be employed in carryin out'the process.

In the drawing, A represents aclosed vessel of iron or any other material which will resist the chemical actionof the contents. Ni-thinthis vessel, and extending across the same a short distance above the bottom,'is al perforated d aphragm, B, on which are placed the Wood-shavlogs -or other fiber-bearing vegetable matter, which admits of being converted into paper-stock. In the space between the 1 fi' l b arid the bottom of the vessel 1. place a coil, l), or t equivalent, to which steam is introdiuzed th gh a pige, a, and the lower corner of the vessel 1 attachwi discharge-pipe and faucet, f. A pipe, 1, extends from the top of the vessel into a condenser, G, Where it assumes the form of a coil or worm, H, the latter terminating in a pipe, 2, which communicates -with the space bet eeii the perforated diaphragm B and the bottom of the vessel. The vessel should have a man-hole, a, for the introduction of the material, the hole being furnished with a suitable detachable cover, and the vessel mayalso be furnished-With a suitable s2 fcty-valve. v

I will suppose that in the presentinstance ordinary wood-shavings are confined in the vessel between the top of the same and the perforated diaphragm B, and that a supply of benzine, 1361b zole msoline, or other equivalent product of the ies or eetrfi m seal has been duced .by a pipe, ie, into a space below the diaphragm, the supply, after reaching or nearly reaching the diaphragm, being out oii' by closing the 3;, 0n introducing steam into the coil rapor will rise from the benzine omits equivalent,

and after permeating the mass of shavings will pass through the pipe D into the coil H,and. after being there condensed will pass through the pipe 6 tot-he vessel below the dia-Dhragm, to be there agaiirconverted into vapor by the steam-coil, the vapor pursuing its previous course thronghthe shavings prior to being again condensed. The vapor, as it thus permeates and circulates through the mass of shav1ngs,at'once attacks the resinous and gummy ingredients of the wood, and these substances, being dissolved,

- flow freely through the perforated diaphragm and lodge on the bottom of the vessel, from which they maybe Withdrawn from time to time through the dischargecock ji In a comparatively short time after the commencement of the process but little remains on the peribrated diaphragm exccpt-ing amass of fibers which is available for gainer-stock.

I have succeeded-in obtaining the desired fibers from shavings of pine Wood by the application of beiizine, under a pressure of from five to ten pounds per square inch. i'apors of diii'erent degrees of heat, however, may be required for dil ferent kinds of Wood, and the heat of the vapor y be varied by pa-ssiu g steam of difierent press ures and temperatures through thecoil, or by using duplicate coils, or by any of the many other diiierent" modes which can"beadoptedior generating heat of diiierent degrees.

E have shown in the drawing and have tlescribed above what I consider economical appliances for carryipg my invention into. cfiect; but it should be understood that the process can be carried out in an open vessel on man woods. The objection to this, however, is the loss i the benzine or its equivalent. The Wood may even be subjected to the direct action of hem-me or its equivalent in open or closed vessels, but I prefer the application of vapor, as descri ed.

' The processmov be carried into eftbet by the combined direct application of benzin" or its equivalent and the vapors of thesame. For instance, there may be a second perforated diaphragm, shown bythe dottedpiines in near the o of the vessel, the sbavines or other fiber upper diaphragm, through which it will pass in streams and pcrcolaie through the mass of shavings until it is, vaporized by the steam-coil or other heat-generator, and the vapor again ascending to be condensed as before. In this case there will be the direct application oi'benzine to the material by descending streams sin'iultaneonsly with the application of ascending vapor.

Other apparatus and appliances for carrying out mv invention. either by the direct application of henzine or other equivalent product of the distillation of petroleum or coal, or by the application of vapors of bcnzinc or its equivalent, or by both, will readily suggestthemselves tothos'c whoare familiar with chemical processes and apparatus. 4

The fiber may be converted into pulp by any of the mechanical or chemical processes now in use.v y Y I claim-- Y The conversion of wood or other lign'eous substance into paper-stock by subjecting it to the action of hydrocarbons, substantially in the manner described,

In testimony whcreol'l have signed my name to this specification in the presence of two subscribing witnesses.

'WILL IAM ADAMSON.

Witnesses:

011s. F. A. Smosm, H, HowsoN.

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