USRE12871E

USRE12871E - Process

Info

Publication number: USRE12871E
Authority: US
Inventors: States Pateht joseph Bijttk
Original assignee: Tse Sereba
Filing date: 1908-01-14
Publication date: 1908-10-27

Description

UNITED STATES PATENT OFFC-E rosiers Buca, or NEW Y.,1Assiei1oaro rusecsaa'stfsroies,BATTERY GOMPANYLA confecciones for YORK.

f Paocmss 'or mmsa'rms Naea'rnmom 'emr-ss.

im. mm1.

speciseeonef-neissuea Lemie Patent. Reissues oet. 27, isos.

Driginal No. lilLdata February 26,'1907fSeria1'Nc. 309,986, Application for reissue 'led January 14, 1908. 'Serial No. MESES. v

DIVISION A.

To all 'whom it may 'coment' Y Be it mowu that I, Josera Bums, a citi aen of the UnitedStates, and a resident oi the borough of Manhattan, city,county, 'and State of New York, have invented certain new-and useul Improvements in Processes 4 f 4of Treating Negative-Polellates, of which Y the following isa specification 'accoiripauiedl l This-inventionrelrates to a process 'of treatingrnegative pole plates for storage batteries. he invention' is applicabile-to both Plante I plates and pasted plates, aud its obiectsar'e featureshereinafter 'uiiy describe claimed 'in this specification and illustrated t to prevent the vloss of .capacity iii t spiate coherence of the porous'sp'onge into ,metallic mass, to insure permanent passage ways for the vdiffusion 'of theeiectrciyte aud Vetes which will will have all the above desirable characteristics. f

Further objects of the 'invention will herei inafter appear and to these ends the invention consists'of theprocess for carrying out 'the above objects embodying the stey s and and 4by suitable apparatus in the accompanying drawings which show an apparatus for car .ing out a rtion of the process 'for the mo ication o the-plate.

" It) the'drawin s, Figure 1 is a perspectiva" View partly breien away showing eating apparatus; .Fig 2 is a perspective view showing a late on tlreheating apparatus; and Fig. Z3 1s a top plan view oi the apparatus on an .enlarged scale to show the details of construction.. I

According to this process the active material on the plate is impregnated with inert material ci a suitable character 'for carrying out the'ob'ects of the invention( This ma- -terial shouv d be of a character which will not be chemically acted uponnor of course be dissolved by the electrolyte,l as for instance carbon. One of the ieadin characteristics of this invention resides `in t e fact that the plates 'are'treated in accordance with this i process after they have been formed or other wise completed to form 'the pores, 'instead of 4-lmviug the inert material introdueedintothe rimes et active material before the plate is becmitted. 'i

fiiuisherl, 'as for' 'exariiple by mechanically mixing are inertlmsterial with paste.

n c'arryiiig 'out tlie'oroc'ess for a Plante plate to be impregnated, for instance,wvith carbon, the plate-is'iirst-fcrmed and reduced to a negative `pcie plate iu the usual marmer and allowed to fdry.

the pores of the plate become illled with the solution. find that -a solution .penetrates l Tit is then soaked for, `about teu minutes m a solution of sugar or 'other 'suitable substance by means of which the pores of the plate readily, and a solution of sugar has been found to operate satisfactcrily and Well. The sugar solutioiimay be of about two percent. to about 'thirty percent. strength, -aithough other percentages may 1 ''oucd suitable for carrying out the process.

have found :that the process is successfully carried out when the solution is at ordinary room temperature.' "The plate is then removed from the solution and it may be rinsed to rinse tbc sugar solution from the' surface of the' I late or else the rinsing may miti-,ing itto stan in air.

lf theA plate is all lead, itis baked in any suitabie apparatus at a temperature of from about 24() degrees C. `tio 30D degrees C. uutii late is their dried by per- .the sugar is substantially completely carbon i ized, which may take live or ten minutes.

, 1f theplate has antimonious alloy parts, as Y for 'instance an alloy frame melting at a lower temperature than the remainder of the plate, it is treated iii'sucli manuer'th'at tire alloy parts are heated less than the lead parte, so as to insure that they are not partially fused in the treatment,

In the drawings a frame of a beating appa? ratus is shown for heating a plate having au alloy frame.

A represents trame.

The a paratus comprises a framework C preferab y constructed of sheet steelqand provided with compartments D, under each of which there is a'ga's burner E connected to a sup ly pipe 4F. Preferably the steel framewor C is double 'iu form andprcvided with the air spaces 'G between the Walls H 'of the thev 'plate aud B the 'alloy y framework and the compartments Dare of substantiali y'the same size as vthe grilleson the plate so that when the plate is laid ou yfaces of the Walls of the iranien/or top of the framework C, as in Fig.2, the grilleF are arranged over the'burners, and the framework B of the plate lies along the upper sur- C and over the air spaces G in said frameiv Iii accordance with this construction the grilles are subjected to a higher degree of heat than the frame of the plate. Any, othei vsuitable torni et l paratus may be devised for carry- 'l ing out t.ie same objects, and the invention is not limited to the a paratus shown.

After the plate has been baked or heated, it may again be rinsed to remove any of the particles of sugar which were not converted into c arbon in the heating recess, and the plate is ready for use. It will be iound that the pores Voit the plate have been impregnated with inert material in the forni of carbon, forming an insoluble and substantiallyr permanent deposit in the pores.

ln carrying out the process after the plate is removed irointhtl solution and allowed' to dry the sugar solution Nin the pores deposits finely divided organic material in the plate,

.Vv-vhich material is` at iirst sugar and is ultimately changed to a deposit of carbon by beingl carbonized in the step ot heating. ln accordance with this process the vided 4orgaiiic material evenly and uniformly plate and it does not interl'ere with the natural coherence oi' strength ol the lead. This invention enables inactive material to be in troduced into the pores of Plant plates after they have been formed, and the process .may be carried out With plates which have been in use. M v invention enables inert material to be introduced into the pores oi the active mass ot' negative pole vPlante plates.

The process may also be carried out with pasted plates, for the invention enables the inactive material to be introduced into the pores oi' the active mass of pasted plates even after they have been in use and have partially lost their capacity from the lack of such material, thereby again raising the capacity of the plate. ,ln treating pasted plates, at'ter the plate is pasted and dried, or after it has been reduced to a negative condition, it is dipped in the sugar solution and allowed to remain for about ten miiiutes as before. It is then removed and allowed to dry in' the air and heated at the same temperature as'tor a Plante plate, thereby substantially carbonizing the. organic material in the pores of the plate deposited out of the solution, so that a pasted plate is vobtained having inactive material incorporated This is a very easy Way of obtaining a uniis deposited ver)r .forni distribution of a very slight percentage of'inactive material, and one which willA not inJuriously disintegrate the mass.v

The invention also contemplates soaking a.

'Plante or pasted plate in a solution of suitable material, as for instance sodium silicate,

'finely diin the pores oln the in the pastel in which case the inactive material is depos ited in the pores of the active mass in the plate chemically instead of by drying and carbonization. I make no claim to discoveringthat sodium silicate solution will react With sulfuric acid of strength such as is used in storage batteries to form silicic acid, or that various other soluble substances canbe readily convertedV into solid deposits insoluble in the' usual storage battery fluid, or that sugar and some otherscarbonaceous substances can be readily converted into carbon deposits in various ways, but it willlbe seen that I cause to take place by 'such means as these the formation Within the pores of the plate of a iine deposit of inert insoluble substance.

The Plante plate after having been treated in accordance with this process assumes in the given instance of the carbon, a light brownish gray color instead'A of the' usual lead gray color of the Plante plate. The plate after many discharges has a very por- 'ons and spongy appearance as distinguished from the ordinary Plante plate vwhich has not been treated in accordance with this process. ln use the capacity of the plate either remains substantially the saine or rises at irst instead ol" falling oli', so that such an impregnated Plante negative should ontlast many times a similar uninipregnated plate before losing, say, a third or a half of its capacity.

The impregnated plate/as anarticle ol manufacture forms the subject oi' a separate patent application of even date, No. 410,870.

l claim the following: f p

1. The process oi treating plates adapted lor use `as negative pole plates, which cone sists in soaking the plate in a solution capable oi penetrating the pores ol the plate and there depositing an inert substance.

2. The process of treating plates to be used as negative pole plates, which consists insoaking the plate in a solution of an organic substance capable ol penetrating the pores of the plate and then drying and heating the Vorganic substance and thereby depositing in .the pores an inert substance.

3. The process ol' treating plates'to be used as negative pole plates, which fconsists in soaking the plate in a solution ol' sugar capable of penetrating the pores of the plate and there (,lep'ositing an inert substance and. ultimately subjecting the sugar to a` carbonizing iie agent and thereb)T depositing said inert substance. s

4. The process of treating plates adapted for use as negative pole plates, which consists of \incor orating an inert substance in the pores of t e active mass by treating said plate With a Yfluid capable of entering the pores and depositing inert material.

5. The process ot' treating plates adapted to be usedr as negative pole plates, which con-j;

sists in soaking ,the plate in a solution of sugar capable of penetrating the pores of the plateand of there depositin at first sugar and ultimately carbon, then rying the plate to deposit sugar', and then'heating the plate to carbon-izo the sugar and form the 'final inert depositof carbon.

6.- The process of treating'plates to be used as negative ole plates., W ich consists in soaking the p ate in a solution of a substance capable of penetrating the pores and of forming by the action of an appropriate agent .a deposit ofI insoluble inactive substance and then removing the plate and subjecting the plate to the action of said agent, thereby causing the formation of such insoluble nace tive sulbstance within'the pores.

7 The processof treating lates to be used as negative pole plates, W ich consists in soakin the previously formed plate in a solution o a substance capable of enetrating 'the pores and of forming with t e aid oi a suitable agent an insoluble deposit of inac tive materlal, and subsequently removing the plate from the solution and'exposing the late to the action of the said agent and there- )y reducing -Within its pores 'deposits ci A inso uble inactive material. A

8.- The process of treating formed lates to beused as negative pole plates, Whic consists in impregnating the previously formed pores thereoil with a solution oi a substance capable of modication to form an insoluble inactive material, and then, as a subsequent procedure, modifying the said. substance while Within'the pores thereby de ositing ,the existing with a tine y such insoluble 'inactive material an( iinally Washing the plate.

9. T e process of treating. lates for use as negative pole plates, after orming, 'which consists in depositing insoluble inactive material in the pores of the plate.

10. The process ofv treating plates carrying porous active mass, to be used as negative pole plates, which ,consists in impregnating pores of the said active mass divided insoluble inactive material. Y y

l1` The process of treating plates carrying porous masses,l to be used as negative ole plates, Which consists in treating the p ate with a solution of a soluble substance capable of penetrating into the existing pores and convertible into an 'insoluble inactive de` posit, subsequently converting the soluble substance While in the pores into such insoluble inactive deposit, and then' removing inactive solubles. Y

12. The process'ol treating lates to be used as negative pole plates, W ich consists in introducing into the pores thereof a fluid medium carrying material adapted to be converted into insoluble inactive material,

and subsequently treating the material While inactive material.

13. The process ci treating lates 'to be used as negative ole plates, W ich consists in impregnating t e pores of the previously formed active portions With an inert substanceby first introducing into the pores by means ci aliuid carryin -medium a substance convertible to the sai inert substance and subsequently converting it thereto while Within the pores.

1.4. The process of treating lates for use as negative pole plates, Whic consists in introducing into t e pores of the plate, by means of a iiuid carrying-rnedium, a substance capable of forming by subsequent treatment an 'insoluble deposit, and then treating the plate to form such' insoluble deposit. V y A l5. The process of treating plates for use within the pores to form a deposit of such as negative pole plates, characterized by the step of soaking the plate in and impregnating its pores with a solution of a substance capable of producing with the aid of an appropriate agency an inert material in the said pores.

16. The process of treating platesfor use as negative pole plates, characterized bythe step of soaking the plate in and impregnating its pores with a solution of alsubstance capaI ble of producing with the aid of an appropriate agency an inert material in the said.

pores, and by the further step of subjectin such material While in the pores to the-sai agency and there producing Within the pores an inert nuitelrial.v .l

In testimony whereof I have-signed. this specification in the presence of two subscribing Witnesses.l

, OSEFH EJUR. l/Vitnesses z Jarras Dixon, kE. VAN LANDT.