1883.

J. H. JOHNSON.

(From J. A. MALONEY.)

632.

Improvements in Storage Batteries or Electric Accumulators.-(Provisional.)

Describes the use of one plate of black oxide of manganese, and another of carbon, in a liquid in which an ammoniacal substance is held in solution.

1883.

W. CROSS.

633.

Improvements in the Manufacture of Finely-divided Lead, Lead Alloys, and Compounds of the same, for use in Secondary Batteries, &c.-(Provisional.) Molten lead, after passing through an aperture, is acted on by a blast of any suitable liquid or gaseous fluid; by this means the lead is broken up and separated into a finely-divided condition, which, when coated with oxide, is ussd as an electrode.

1883.

T. ROWAN.

Improvements in Secondary or Storage Batteries.

791.

Relates to a form of battery in which a box is divided into a number of cells or chambers, the cells being filled with granulated lead mixed with peroxide of lead.

1883.

O. J. LODGE and J. S. PATTINSON.

927.

Improvements in Secondary Batteries, and in Renovating or Revivifying their Plates.

Describes the employment of ammonia, acetate, or other solution, for the purpose of cleansing old or sulphated negative lead plates from a crust of sulphate, the pores left in the lead being subsequently filled up by the addition of fresh litharge, or by electrolysing acetate of lead and depositing the lead upon the plates.

Also relates to the employment of amalgamated zinc as an electrolytic deposit in and upon the negative plates, the zinc and mercury being deposited out of a salt of zinc and a salt of mercury.

1883.

R. H. COURTENAY.

1016.

Improvements in Electric Secondary or Storage Batteries.—(Provisional.) Relates to arranging the cells so as to prevent or lessen the leakage of the current when the cells are not in use.

Relates also to charging the cells with oxygen gas, thus enabling the cells to be charged in much less time than ordinarily.

1883.

D. G. FITZGERALD.

Improvements in Secondary Batteries or Accumulators.

1122.

Relates to the manufacture of indestructible electrodes, or of electrodes which will last for an indefinite period, by the use of any suitable impervious and insulating materials, with which the electrode or the supporting plate backing is in part coated, prepared, or saturated.

883.

G. BINSWANGER and T. SEXTON.

Improvements in the Construction of Receptacles for Secondary Batteries or

Electrical Accumulators.-(Provisional.)

1969.

Describes wood boxes or chambers constructed with the sides grooved and made fluid-tight, the grooves being filled with red lead cement.

1883.

F. T. WILLIAMS and J. C. HOWELL.

2573.

Improvements in the Manufacture of Porous or Spongy Plates, particularly applicable for use in Secondary Batteries or Accumulators, and also for other purposes. Employs electrodes constructed as follows:-A mixture of lead and crystallised lead in a molten state is poured in a ladle or mould with a perforated bottom, the liquid metal being allowed to drain through the perforations, leaving the ladle or mould more or less filled by a block of crystalline or spongy lead.

1883.

W. R. LAKE.
(From C. DION.)

3340.

Improvements in and relating to Electrical Accumulators or Secondary Batteries, which Improvements are partly applicable to other Batteries.—(Provisional.)

A porous vase is placed between plates of carbon which are immersed in a solution of proto-chloride of iron, the porous vase containing a piece of amalgamated zinc in a solution of chloride of zinc.

1883.

A. J. JARMAN.

3886.

Improvements in Storage or Secondary Batteries.

Employs a series of concentric cylinders of lead or lead and silver alloy plates, which are placed in a vessel, and between the plates is packed spun glass or toy beads or sulphured wool, for the purpose of separating the plates; or layers of amorphous lead may be used.

1883.

R. H. COURTENAY.

4037.

Improvements in Electric Secondary or Storage Batteries.—(Provisional.) To prevent leakage the positive and negative electrodes are placed in separate cells.

1883.

D. G. FITZGERALD and T. J. JONES.
Improvements in Secondary Batteries.-(Provisional.).

4197.

Describes the construction of portions of the anode element of an alloy of platinum and lead in certain proportions, and which will resist the effects of certain local action which takes place in cells.

1883.

G. F. REDFERN.
(From D. LONTIN.)

Improvements in Electric Accumulators.—(Provisional.)

4612.

Relates to the decomposition of alkaline salts by a current in which several sheets of lead are opposed to sheets of amalgamated zinc and placed in an

alkaline solution. When the current is passed the alkaline metal will deposit in the mercury of the amalgamated zinc, and its oxygen will be carried to the lead and will form a peroxide of lead.

1883.

W. P. THOMPSON. (From K. W. ZENGER.)

5043.

Improvements in Electrical Accumulators, applicable in part to Regenerative Primary

Batteries. (Provisional.)

Relates to surrounding positive pole plates (cathodes) with some halogen, such as chlorine, bromine, or iodine; these halogens having a depolarising action, and combining themselves, as soon as both poles are connected by means of a conductor, with the hydrogen surrounding the negative pole plate (anode).

1883.

J. S. SELLON.

5069.

Improvements in Secondary Batteries or Electrical Accumulators. Relates to providing plates of suitable construction with grooves or overlappings at or round the edges, and containing an insulating material to arrest electrical action or leakage by moisture or capillary attraction.

1883.

A. KHOTINSKY.

Improvements in Secondary Voltaic Batteries.

5540,

Relates to constructing a cell in the form of a shallow trough divided by low zigzag partition into two compartments having branches interspaced with one another, each compartment containing a sheet or shallow layer of one of the elements, and both being covered over with the exciting liquid.

1883.

J. GREENWOOD.

5680.

Improvements in Accumulators for Storing Electrical Energy, applicable also to Primary

Batteries. (Provisional.)

Relates to the charging of accumulators under atmospheric pressure, and by means of which they can be charged in much less time than ordinarily.

1883.

J. S. SELLON.

5741.

Improvements in Secondary Batteries or Electrical Accumulators. Relates to the employment of strips, plugs, or discs of insulite or porous clay to keep the plates apart, in combination with a binding device capable of yielding under pressure.

1884.

G. G. ANDRÉ.

1100.

Improvements in Primo-Secondary Batteries, or Batteries which partake of the nature of Primary and Secondary Batteries.—(Provisional.)

Relates to the construction of a portable battery, each cell consisting of a core of lead placed in the middle of a tube of lead; the space between the tube and the core is filled with peroxide of lead and granulated carbon.

1884.

A. TRIBE.

2073.

Improvements in or connected with Primary and Secondary Batteries.—(Provisional.) Describes the construction of retainers or supports for the active elements of nitro-cellulose or gun cotton.

1885.

C. S. BRADLEY.

2463.

Improvements in Secondary Electric Batteries or Electric Accumulators. Describes the use of an electrolyte of a solution of metallic bromide, which is deposited when the battery is charged, the metal being deposited upon one electrode and the bromine being set free on the other electrode, the bromine thus liberated being taken up by the solution.

1884. G. PRESCOTT, M. F. PURCELL, D. SHERLOCK, and 5409. W. H. DUNNE.

Improvements in Secondary Batteries.—(Provisional.)

Relates to making the negative plate or anode of suboxide in connection with metallic lead; also for the positive plate the use of lead and oxides in a fine state of mechanical division; also to the construction of the cells with a porous partition between the plates.

1885.

J. PITKIN.

3260.

Improvements in Secondary Batteries or Accumulators.

Describes method of combining with conductive plates several perforated plates of non-conducting material, the active material being held against the conducting plates by the non-conducting plates.

1884.

F. G. HOWARD.

9843.

Frames for Electrodes in Secondary Batteries.-(Provisional.) Describes the construction and use of ribbed wooden partitions between the plates or electrodes when arranged in a horizontal position.

1884.

C. MOSELEY.

10207.

Improvements in Secondary Voltaic Batteries, applicable also to Single Fluid

Primary Batteries.-(Provisional).

Describes the use of separaters between the plates, and which are constructed of any suitable material, such as gutta-percha, celluloid, or hard vulcanised rubber.

1884.

1884.

E. G. DORNBUSCH.

Improvements in Secondary Batteries.

11853.

Relates to the use of felt or flannel as a support for the active material.

D. G. FITZGERALD.

12350.

Improvements in Secondary Batteries or Accumulators.

Relates to the use of anodes and cathodes of lead in combination with an

electrolyte consisting of sulphate of magnesia in solution, or of an electrolyte containing this salt in sufficient quantity to enable the process of "forming" and "charging" to be effected by two passages of the current in opposite directions.

1884.

A. H. REED.

(From E. COMMELIN and G. BAILHACHE.)

Improvements in Secondary Batteries.

14508.

Employs zinc plates as electrodes. These are placed in a solution prepared by dissolving oxide of zinc in potash or soda, or any other oxide of metal soluble in these alkalies.

Passes through the liquid furfurol or fucusol hydrochloric acid gas; the black liquid produced is pressed between glass plates; the material is then cut in narrow strips and exposed to boiling heat, and then placed in carbon powder and exposed to a high heat.

For rod carbons the same operation is performed, except that the carbon is formed in a tube before it is exposed to the high heat.

1882.

A. S. CHURCH.

1822.

(From J. B. KING.)

Improvements in Electric Lamps.

The introduction of moist atmospheric air through the centre of the carbons, which are also arranged with a spiral conductor in the centre of the carbons.

Battery Plates, and Accumulators.

2776.

Improvements in Manufacturing Carbons, applicable for Electric Candles, Poles

Calcined vegetable fibres saturated with a hydro-carbon substance, or fluid saturated into rope or string, and carbonising same.