US1585760A - Accumulator plate - Google Patents

Description

May' 25 J.' MCD. BURNETT ET Ac.

ACCUMULATOR LATE Filed Ma 6, 1924 2 Shee s-Sheet 1 y 4) MMHUUHNMHHWHHJU h J. MCD. BURNETT ET AL AccUMULAToR PLATE Filed May e, 1924 2 sheets-sheet 2 f May 25 1926.

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l'UNITED sra'rns errar/raies.

JAMES MCDON'ALD BURNETT, OF WESTON-BYWELLAND, ANDLJOHN ALFRED FULLI- LOVE, F MARKET HAB/BOROUGH, ENGLAND.

ACCUM'ULATOR ELATE.

Appncaaon nies May e, 1924. serial no. 711,465.

This invention relates to accumulator plates.

@ne object of the invention is the provision of an accumulator plate having an in- I sulating frame secured around :the edge thereof whereby a Ip'luraflitv of Isuch accumulator plates arranged side by side will be positively .prevented from making electrical contact with one another,

Another object is the provision of means for positively vand Vrigidly securing. on an economic `and `.commerieal scale, an insulating frame around vthe .edge -of an accumulator plate.

Another object is the provision of an accumulator plate built up o-f a Anumber of cast lead lunits and haring `an insulating frame secured .around the ledge thereof said units and frame being held together in a single `structure of greater rigidity than an ordinary lead accumulator plate.

Other objects and ,advantages will appear hereinafter.

Two embodiments of the invention are il- 25 lustrated in the accompanying .drawings and Figure l .is .a perspective view of .one of i the wooden frame members of one ofthe embodiments.

Figure '2 shows in perspective in 4elevation and in section views of the fra-me ymembers arranged in a position illustrating one stage in the process lof manufacture of the plate.

Figure 3 shows in side elevation and in section the nished plate enclosed in its frame.

Figure 4 is a plan view of two disassem- .bled vadjacent frame members of the other embodiment.

Figure 5 -is .a sectional end elevation of kthe same.

Figure y6 is a sectional side elevation of all :Eour frame members shown in their .assembled relation with respect -.to one another, and

Figure 7 isa Side .elevation of ra finished plate enclosed in a frame formed of frame :members such as lthose illustrated in Figures 4 to 5,

Referring first to Figures l-B the plate comprises a number of units `(such as that described with reference to Figure l of :the drawings of Letters Paten-t of the United States, No, 1,564,524 granted to me Dec. 8, 1925) and four wooden frame member-s 2. The units, as described `in the specification aforesaid are of square formation and have a number of perforations 3 adapted to aecommodate accumulator paste and symmetrical grooves 4 formed along theiredges; and the frame .members have .each .a groove in one longitudinal edge and inwardly tapering holes 6 leading to said groove from the opposite longitudinal edge.

As shown, the units are arranged edge `to edge `to form a square or rectangular mosaic and the frame members yare arranged around the ouide edge of such mosaic with their grooves inwards. The whole is bound together ,-in .this correlation by means of some acid proof .conducting material, such as anti- Vmonial lead (which is .of greater rigiditv than lead), cast i-n the .hidden communicating channels which run between yall wthe adjacent ypairs of .units and also between the frame .members and the outside units.

In the construction of the arrangement the plate proper may be rst formed in the manner described in the specification accompanying Ithe copending rapplication aforesaid except that no metallic -frame or lug is formed, the frame members being afterwards secured therearound by clamp- 'rig them in position .and pouring antimonial lead through .the .tapering holes 6 so yas -to `fill the concealed channel between the .plate proper and the said frame members; or .the separate units and frame members may be bound together by one casting ,operation `of the antimonial lead. In this .latter case .the frame members are arranged .in .-a template in the relation shown in Figure 2 and .the units are arranged and clamped by suitable clamps in the position within the frame .members shown in Figure 8. Antimonial lead is then poured or forced through the tapering holes 6 and .percolates through the network of communicating intersecting channels running between .all the adjacent pairs of units and also between the .outside unit-s and the frame members and Vthereby positively secures the whole structure t0- gether. Y

By Virtue of the tapering holes 6 being filled with antimonial lead, positive joints are constituted, as will be readily understood, between the frame members and the accumulator plate proper.

Referring now to Figures l to 7 these figures illustrate the construction of an embodiment of the invention in which, in the first place, the antimonial lead is not exposed outside the frame members except where desired for electrical connection, 1n the second place, the tapering holes 6 arev dispensed with, and in the third piace a supporting lug of the antimonial lead is cast into the structure during the operation of securing the several parts together.

As shown in Figures 1l to 5 each frame consists of four members two of which, 2 are provided with grooves 5a extending the whole length thereof and the other two of which, 2b are provided with grooves 5l which do not extend the whole length thereof but terminate at points adjacent the two ends as shown.

rllhus by assembling the four frame members in the manner shown in Figure 6 a continuous channel is formed running round the inside edge of the frame which channel does not communicate with the outside edge of the frame.

A further feature of this embodiment resides in the fact that the grooves 5a and 5b are undercut as shown in Figure 5, so that the securement of the frame members to the antimonial lead within the grooves thereof and therefore to the plate proper is rendered positive without employment of the tapering holes 6. The straight sided holes 7 at the two ends of the grooves 5b are formed, prior to such undercutting of said grooves 5b, in order to render it possible to insert an undercutting tool into the groove.

rlhe plate proper and frame members such as above described (arranged in the relation shown in Figure 6) are built and incorporated into one structure precisely as in the case of the embodiment illustrated in Figures l. to 3 except that instead of antimonial lead being poured into the network of communicating channels through the tapering holes 6, it is all poured through one large elongated hole or slot 8 formed in one of the members 2a as indicated in Figure 7 This hole or slot moreover permits of the casting on of a supporting and terminal lug 9 of antimonial lead integral with the antimonial lead which cements the units and frame together.

Instead of being built up of units having symmetrical grooves around their edges, plates of varying thickness and having wooden frames as in the embodiments above described may be built up of units the edges of which are recessed to one side (as shown in Figure 3 of the drawings of the Letters Patent aforesaid) so that symmetrical grooves may be formed by placing a pair of units face to face. In this case pairs of units, placed in this manner face to face, are treated as single units to build up the plate proper in the manner described in the specification of the Letter Patent aforesaid with reference to Figure 6 of the drawings accompanying the same. in this case frame members of proportional thickness are of course used to enclose the plate.

Where a block battery is required this may be done by first drilling similarly disposed holes 8 (Figure 2) through similar frames of each of a number of plates, next placing the plates one against the other in block formation with these holes in registration and finally cementing the plates into one block by filling these registering holes with antimonial lead. These holes may be made of smaller diameter in the middle than at the ends in order to make the securement together of the plates more positive.

ln any of the aforedescribed embodiments, the holes 3 may obviously be made bevelled as described with reference to Figure 2 of the drawings accompanying the specification of the Letters Patent aforesaid.

What we claim and desire to secure by Letters Patent is l. An accumulator plate structure comprising an accumulator plate proper, an insulating frame secured around the edge thereof and a connecting element cast between said insulating frame and said plate proper for securing the same together, said connecting element extending into a recess in said insulating frame which is of such shape that said frame is positively locked to said connecting element irrespective of the force of adhesion.

2. An accumulator plate structure comprising an accumulator plate proper, an insulating' frame secured around the edge thereof and a connecting element cast between said insulating frame and said plate proper for securing the same together, said connecting element extending into recesses in said insulating frame and said plate proper which recesses are of such shape that said insulating frame and said plate proper are both positively locked to said connecting element irrespective of the force of adhesion.

3. An accumulator plate structure comprising an accumulator plate proper and an insulating frame secured around the edge thereof, said insulating frame and said plate proper being secured together by the process of casting therebetween an integral connecting element.

4. An accumulator plate structure comprising an accumulator plate proper, an insulating' frame secured around t-he edge thereof and a conducting connecting element cast between said insulating frame and said plate proper for securing the same together, said connecting element extending at one point completely through the frame to the outside edge thereof so as to thereby constitute a terminal of the plate proper.

5. An accumulator plate structure comprising a number of units together constituting the accumulator plate proper, said units having formed therein recesses which co-operate to form channels. running between said units, an insulating frame around the outside edge of the combined units, said insulating frame having formed therein an undercut groove around the inside edge thereof which groove co-operates with recesses of the outside unitsl to form a channel running between said frame and the outside edge of the combined units, and a conneeting framework of more rigid material than the material of the units cast both into said former channels and said latter channel and securing Said units and said frame together into a rigid structure.

In witness whereof we a'fix our signatures.

JAMES MGDONALD BURNETT.

JOHN ALFRED FULLILOVE.

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