US850788A - Secondary-battery plate and method of making same. - Google Patents

Description

PATENTED APR. 16, 1907.

No. 850K788.

L. N. J. ROSELLE. SECONDARY BATTERY PLATE AND METHOD OF MAKING SAME.

APPLICATION FILED FEB.13,1905.

QSU Z W% 6 n.. mm n MW wwr 4 M6 lll lt ll llf l lllil fitttcntecl April. 3.6, 1907.

Application 11,

il fehrzmrgl18.19051 Serial 1c. 245,474.

75b 16/? whamriw y c0 21: be it Kncwn that i, Let c harm: e .lleermmc, .en (it the Fuel. h

cbiwgangccl and guitleanarltcd in when the mold closed 1' Mulch at their extremities,

resicl v at Fe as, ill Rue (l4: la ll lilllil l a. in l"? .ilfl'er the purpose of lern'iing can in'venl vd. certain new are uevlul .lmprc'w 'lI-lfi er hnres j in the cast core, which pass ments in leecerulery-icltery dlfitl right tlmuigli it, eeen in. Fig. l. The Methecl el Mela: I thcl .l is; itlri i) prm'ided at its englee with lolhmrurgusaepcc {chew ls serving t0 form slots in in the This ln'ventiu le elm-ct t l'=?"l'l'$- we, curlv-ihlch slots terminates in an eve. for the n'lel'iul e cl. plea. l When the Pe of active 'n'invterlel is cast in electric better com )ilSlIl" a, (amt-e Ulflztlllllkl l the run-imm- (lQ. ihetl it is removed from. the

. l i l by fusion, casting", and molding cml e sup mold, and hclcre it 15 completely cool (prelpert termed by casting around. the hillll ccre. erchly n :l note, state as pessible) it is The lnventlonconsists, hrcmlly,inform 1m; placed in it n:l "l'nele l, when the support by fusion, cestii'ig, and molding a cure active material and in casting t'l. ll.l1l j. core a support presenting the form of :1. grid. The lave; cl charm of the meld fer cnsthig with multiple ramifications, this suppert li 0- the cupped m.- g rial is sulvstantielly the same ing cast in a mold the core which ccni 'll y we mehl fer cmting: the core, l1ig'. stitutecl by the care of active material itself, an is .prc'vulell with tlIliUlS which, as indicated, has pre /finely been; 7 1 5, and metliigcalazmnels 5;, and in order that my invent m max e gre-emzwl in shah :1 11111111101. fully understcetl I will LlBSUIl h 1c lcctiem: which as :1, whole Term cf mold. by mcens 01 which. thl. prcccce in term the levee. cl the grill or carried into practice. Ewell mehl we; a. do 11.0mm e cl the in /entice 1; l1v cf the are illustrated in the accompanying llrc terminartof Whichv c wound said core and in the ntms e c re F at the an. m pert sluts 0,

mcrulmg with. the slots Figure 1 is c. perspective view of the meld ml the core. V for casting); the care. shows one of i i The preccss is: carried out in following inner walls with the grooves and prejcctiuue l manner: The l'm'nitttioii of the core consists tl'lereon. Fig. 3 is a. cross-section threugh l in 2m crzlinztr casting operation in. the mold line A B of Fig 2. Fig. 4 shows the cure cl of Figs. .2 my. came being lltll to avoid any active material after resting. Fig. reprcl sud-(lee. cooling: in order that the melecular sents ene of the inner Walls of the mchl 'l'er mmllitien ol' the rmiterinl may net he illOllflcasting the grid or support for the (were. lllHl, ec-

te lc'w'e the finished plate in a Fig. 6 is a. perspective view ct a fart cl' mill. etmin er to cruise the same to warp. grid or support. l ln (mlcr to cztet the en ppcrt or grid, which The process according te this him-mien 1 'i:--; pic-llwzi-lfly hmncll cl :mtimenic lcml, tl'lerc consists in first casting the cei'c cr scgz ment l is plmzcll within the second mold, Fig. 2, and elf active materiel. in a. mehl. lerhictl. cl twc while yet in a hut stetc the cure of active Inapertsaaml 1, connected enc with the other f lerin-l, which has zth'cellyhcen prepared, the foreminplc,liynieanscf2i.l1lngec--en l catch j melll lining: then. closed. t l hen the mold previtletl with a handle at, permitticg ll-he lists lwen llllill with the metal in a, state of closing of the meld. During the cacti tr .l'ueilmfllhcrc termed m'cuml thccoi'e at supeperzttion the closing of the mehl lllWlHHl cert in c -lc iec1:-.,'lhc hereof which c0nby means ole suitable device, such. it I itute the we m. the support and rcetupcn ring e. i I. "ecec of the cerc amvl are united one with The internal crrzingement cf the mehl, the ether 'hy n'icime cl as many hicenical :0 which may be seen. in Fig. 2,'cum risc:- twc trehewree here me there cevitiee 'j in-thc wxir holes or wants f, a principal wasting l core. .l.hcsclmrc formictheective materiel channel or gcet g, and small casting-clmnnele e0 many centuctc're er cnlh'lctme for the cur h, giving rise to it car-sting, which i'wmie'veti 1 rent. .l n mhlitien a. llill'crcnce of thickness alter cooling. l between. the interior of the n oltl and the cure no Each inner face carries :1, series cl ircjec- I Fem-nits cl the formation upon the entire surt10n,s t, presentmg the lerm el' :1 truncated l ace efthe cure cl 1L thin. lihn ul' nictztl, which this latterthat is to say, While it is still hot'enough to prevent injury to or exhaustion of its surface on-contact with the metal in fusion. The final product is therefore a secondary-battery plate the core of active material of which and its support are united by casting, so as to form a single piece.

The slots and eyes provided at the angles im art to the whole, especially to the frame, sufficient elasticity to permit of free expansion of the plate during charging arid contraction during discharging. If desired, the number of these slots provided with eyes may be increased, forming them upon the sides of the frame itself.

The contacts or collectors, which extend right through the active material, may be of any form'other than that described, if de sired. For example, they may present a double conical, cylindrical, prismatic, orpolyhedral formation. In the same way the form and disposition of the bars of the grid may vary widely in accordance with requirements. Finally, the process may also be carried into practice by means of a multiple mold for casting in a single operation several supports around their respective cores.

Having now particularly described and' ascertained the nature of my invention and in What manner it may be performed, I declare what I claim is 1. The process of manufacturing plates for secondary electric batteries, which consists in casting or molding in a mold a core of acentire surface of said core between the ramifications ofthe grid a thin film ofmetal, then allowing the Whole to cool slowly and finally removing the thin film of metal.

2. The method herein described of manu facturing plates for secondary batteries,

which consists in casting a coreof active material, and casting'about said core a grid provided with ramifications, said grid being provided between said ramifications with a comparatively thin film of metal, allowing the entire mass to cool, andfinally removm said thin film of metal. I g

3. The process of manufacturing plates for secondary electric batteries which consists in molding or casting a core of active material in the first mold shaped so as to form at the angles of the core notches termis na'ting in an eye, then casting around said core while in a hotcondition a ramified grid or support in a second mold shaped so as to form at the angles of the grid notches terminatin in an eye, which eye corresponds to thenotc es in thecore, the said grid having a thin film of metal between the ramifications thereof, permitting the plates to cool slowly and removing the film from the id.

In testimony of which have hereunto set my hand, at Paris,.the 30th day of January,

I LOUIS NESTOR JOSEPH ROSELLE.

In presence of- HENRY SOHWAB, HANSON O. COXE.

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