US1183807A - Storage-battery grid. - Google Patents

Description

. E. E. EVERETT.

STORAGE BATTERY GRID. `APPL|cAT|qN mep JUNE 23,1913.

53,8()7. n APatented May 16, 1916.

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grid emtar elevation of a'storage batteryI 1s a verbo ying my improvement. Fig.

tical sectional view ofsaid grid, taken on" -bars pressed together to close the opening primarily existing between them. Fig. VI is a fragmentary sectional view, taken on the line VI, VI in Fig. V. Fig. VII is' an inverted plan view similar to Fig. III but showing a modified form of my invention. Fig. VIII is a fragmentary elevation of the right hand edge of the grid shown in Fig. VII. Fig. IX is an inverted plan view simivlar to Fig. VII but showing t-he base bars pressed together'to close the opening p'rimarily existing between them. Fig. X is a fragmentary elevation, similar to Fig. VIII but showing said base bars pressed together as in Fig. IX. Fig. XI is a fragmentary elevation, similar to the lower .left yhand corner of Fig. I, but showing a modified form of gratings.

Referring to the form of my` invention shown in Figs. I to VI inclusive; the plate 1 having the terminal lug 2 is a unitary metal casting including a rectangular, plane frame having single members 4, 5 and respectively forming the top and opposite vertical edges of said plate, and having two parallel base bars 7 at the bottom edge of said plate. .As shown in Figs. III, V and VI each of said base bars 7 is onehalf the thickness of said plate so that when pressed together as shown in Fig. V their opposite plane faces are flush with the opposite plane faces of said side frame members 5 and G. In order to permit said base bars to thus close together they are tapered to less thickness at their unctions with said frame members 5 and 6 as shown in Figs. III' and V. Said unitary metal casting includes the five partition bars S) which are recessed, in `the direction of their length, between said base bars 7 as indicated at 10, the upper ends of said recesses being wedge shaped as indicated in Fig. II. Said partition bars 9 extend parallel with said opposite vertical frame members 5 and (i, in spaced relation, -forming between them a series of six vertical chambers 12 in said casting, for active material, said chambers opening between said base bars and extending to the frame members 4 at thc top'ofsaid casting, as shown in Figs. II and III.

Said chambers 12 are inclosed at the oppo.

site plane faces of the plate 1 by respective gratings 14 and 15 each formed of strips 17 section as shown in Fig. I

and 18 in unitary relation with said casting and of outwardly converging V-shapedcross As shown in Fig. I said strips intersect in diagonal cassated ,relation with diamond-shaped spaces between them; the intersections o the strips in each of said gratin 1,4 and 15 being opposite the `centers o the diamond-shaped spaces of the'other grating. As shown in Fig. I the strips18 intersectingintrmediate of said partition bars9 at the bottom thereof are separate from the adjacent base bar 7 at said intersection and have auxiliary strips 2() extending from the junctions of said base bar -7 with said partitions 9 in connection with said intersecting strips 18 be- 'tween the intersections of the latter and said partitions; said strips 20 being in unitary cast relation with said stri s 18, base bar.7, partition bars 9 etc.' As a ve noted such construction permits the base bar 7 `to be compressed from the primary ition, in which they are cast, as indicat ted lines in Fig. VI, to the final position, indicated in full lines in said figure, without depressing the adjacent intersectin strips 18 to restrict the area of the cham rs 1'2, and leaving said intersections in position to support the active material without liability of being thrust outward by ressure of said material, the latter tendency in overcome by said auxiliary strips 20. n this in dotconnection, it maybe observed with reference to Fig. II that the strips 17 and 18 as they approach the base bars 7 are of slightly greater thickness than at points remote from said base bar, and consequently the grid is to withstand the increased pressure of the active material which at the lower part of the finished electrode tends to -outwardly displace said strips.

It may be observed, with reference to Fig.

V, that the construction and procedure above described, leaves openings 22 between said base bars 7 adjacent the respective side frame members v'arid 6, because the latter are not recessed like the partition bars 9.'

However, grids may be made without such openings 22 by recessing said frame members '5 and G as indicated at Q3 and 24 in Figs. VII and VIII. 'the base bars 26 in this form of myinvention being of the same thickness throughout their length so that they may be pressed into contact with each other as shown in Figs. IV and X.

I prefer to make the strips of the gratings intersect intermediate of the vertical partition bars 9 as shown in Fig. I to afford suiiicient rigidity to prevent buckling of the grids for positive plates. However, the grids for negative plates, ar not required to be as rigid as for'positive plates, because of the more yielding character of the active material of the negative plates, and may be made of simpler form, for instance as shown :in Fig'.A X,.whe:ein the gratings at the re :ipectiyely opposite faces oi the plate 30 are respectirely formed by strips 3 1 and y32 'which extend from the frame members 33 to the vertical partition` bars 34, 'and between be constructed and arranged like the base bars 7, as shown in Figs. il to VI inclusive, or like the base bars 26 shown `1n Figs. VH to X inclusive. That is to said parti-t tion bars Se are recessed in the direction of their length betweensaid base bars 36 as indicated at l() in Fig. il; buttheirame bars 33 may be leither thus recessed or not. Said grids are adapted to be supported by resting upon two ribs5 extending transl versely to the planes, at the bottom of the battery cells, wherel have made the base bars of greater vertical extent, as indicated at l0 in Fig. 'l ande). in 1Eig. XI.

'l find it preferable to maire said castings oilead alloyed with antimony sufficient to impart the desired degree of rigidity.

j I do not desire to limit myself to the pre1-'3,

cise details of construction and arrangement herein set forth; as it is obvious that various modiiications may be .made ltherein without. departing from the essential features of my invention'as defined in the appended claims;

I claim 1. A storage battery grid consisting of a metal frame including two base members; and two parallel series of inclined strips of which certain strips adjacent .the base members are structurally separa-te from and independent of said members.

2. A storage battery. grid consisting of la' metal frame including, two base members; and two series of inclmed mtersectlng strips of which certain strips adjacent the base members are structurally separate from independent of said members.

3. A storage battery grid consisting of a metal frame including two base members; partition members extending from s'aid base members; two series of inclined intersecting strips connecting` the partition members of each adj acent pai r thereof, certain of the-intersecting strips adj acnt the base members being structurally separate 'from and independent of said members; with auxiliary strips extending` from the junction of the base meinand . bers with the partition members, to the ad-v jacent intersecting strips.

Ll. A storagebattery grid consisting of a metal trame including two substantially parallel base n'iclnbcrs; partition members; and two .series of strips connecting adjacent partition'members, the lower ends of the partition Y members being forked and the branches of each forli being respectively connected to the base members. 'y 5;-A storage` battery grid consisting ci" a ribs of a battery cell; partition membem ei:-

tending from said base members; and two series of strips connecting the partition members.

6. A storage battery vgrid consisting of a metal frame including two substantially parallel base4 members;'and two series ci' strips 'which increase in thickness es they approach said base. members.

7. Astorage battery grid consisting of a metalv frame including opposite side members; with two substantially4 parallel base members of diminished thickness adjacent their ends and having said ends connected to said side members. f

8. A Storage battery gridc'onsisting of a metal frame including opposite side members; two parallel'ba'se members extending between' said side members; forked parti' tion -members extending from said base members; and two series ot strips connecting the partition members or' each adjacent pair thereof. f

9. A storage battery grid consisting of a metal. frame including opposite side members; two parallel base members extending between said side members; partition memj bers extendin r from said base members; and 106 two series o strips connecting the partition members; said base members being directly connected to each other at their ends only.

10. A storage battery grid consisting of a 105 metal Aframe including two v substantially parallel base bars; and members having -forked ends with their branches respectively signed my name at Philadelphia, Pennsyl- Vania, this nineteenth day of June, 1913.

EDWARD EARLE EVERETT.

lVitnesses:

JAMES M. SK'IN'NER, y

1 S'rooK'roN H. MoR'rIMER.

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