US1318364A

US1318364A - Ele ctric battery

Info

Publication number: US1318364A
Authority: US
Publication date: 1919-10-14
Anticipated expiration: 1936-10-14

Description

J. E. DUNN.

ELECTRIC BATTERY.

APPLICATION FILED SEPT. 2a. 1916.

Patented Oct. 14,1919.

2 SHEETS-SHEET I Tlql $5 akbozuaa J. E. DUNN.

ELECTRIC BATTERY.

APPLICATION HLED SEPT. 23. I9I6.

Patented 0m. 14,1919.

2 SHEETSSHEET 2.

5 vwewro'o unrrnn snares Parana carton.

JAY E. DUNN, OF BROOKLYN, NEW YORK, ASSIGNOR TO NOVO MANUFACTURING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ELECTRIC BATTERY.

Specification of Letters Patent.

rutaven UN]. 14:, Fiat.

Application filed September 23, 1916. Serial No. 121,742.

Fig. 10 is a modified form of blank for To all whom it may concern Be it known that I, J AY E. DUNN, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electric Batteries, of which the following is a specification.

My invention relates to an improvement in electric batteries; particularly batteries of the type employed to supply current for incandescent lamps in torches and flashlights.

The primary object of my invention is to provide a vessel or container for the chemical substances 'by whose action upon the electrodes of the battery electric energy is produced; the container being of such construction as will not only enable it to be easily, quickly and cheaply manufactured, but also permit the merits of the battery when linished to be enhanced, and the durability and efliciency thereof to be measurably increased.

The above and other objects of my invention will appear from the following description, taken in connection with the accompanying drawings; whereon several embodiments of my invention are illustrated. This disclosure, however, is to be construed as explanatory only; and embodiments of my invention other than those actually shown herein may of course be used; to the full ex tent indicated by the general meanings of the terms in which the claims appended hereto are expressed. I

On said drawings:

Figure 1 is a view of a blank out of which the body or main portion of my improved container is made;

Fig. 2 is a side view when the blank has been worked to cause it to assume the required shape;

Fig. 3 is a side elevation, partly in section, of my container, showing both the main por ti on and the bottom Fig. is an end view of the main portion:

of the container;

Fig. 5 is a. view, similar to Fig. 2, of a modified form of body for a container;

Fig. 6 is a view, similar to Fig. 8, of the body referred to in connection with Fig. 5, with the bottdm of the containerj added.

Fig. 7 is an end elevation of the modified container body; I

Fig. 8 is a plan view of the bottom of the container Fig. 9 is a side elevation thereof;

making the body or main portion of a con tamer;

Fig. 11 is a side elevation, partly'in section of this modified blank, after shaping the same;

Fig. 12 is a similar view of the same, with the bottom added; I

Fig.1?) is an end View of the construction shown in side elevation on Fig. 11; and

Fig. l t is a longitudinal sectional view of a battery including my container.

The same numerals of reference identify the same parts throughout.

I wish to state at the outset that heretofore containers for electric batteries for flash lights and the like have been generally made by soldering a tubulaiubody of conducting material to a bottom of similar material; whereby such containers have been composed entirely of metal. Such a method is comparatively expensive; requiring relatively large quantities of metal, and entailing a number of difiicult operations to get the parts permanently assembled; and it has the further disadvantage that the bottom is not always united to the body in such a way as to make the container perfectly leakproof. In the practice of my invention, such objections are largely obviated; and at the same time I secure certain important advantages which are clearly set forth subsequently in this specification.

After being worked in such fashion, it will preferably be cylindricah with its opposite edges 2 overlapping; whereby it may serve as the mam portion of a container in which the chemicals of an electric battery are re- I ceived. In the embodiment of my invention portrayed. in Figs. 2, 3 and 4, the metal,

blank 1 is made cylindrical only; butin the modification depicted in Figs. 5, 6 and 7,

the blank is Sub ected to a further operation to cause one terminal edge to extend inward, making a rim or flange 3; In both these forms of my improvement, an impel;

forate wad t of insulating material; for example, paper, cardboard or other substance, fibrous or non-fibrous, is employed to close-one end of the main portion 1, and constitute the bottom of the container.

The wad 4 in. any case will be locatedadjacent one end of the main portion 1, and preferably as near'to the terminal edge of the same as it can be placed. In the form of my invention illustrated inFigs; 2, 3 and 4:, this wad will be'flush with the terminal edge; while in the modification shown in Figs. 5, 6 and 7, the wad will not be quite flush with the terminal edge, but will engage the rim 3 and abut against'the'inner face thereof. I make the wad 4 of such size that its periphery will be encircled snugly by the main portion of the container when the wad is properly disposed therein; thus giving, a fairly tight fit; and this wad is also treated'so as to coat it; and, if possible, impregnate it, as can easily be done when the wad is of a fibrous nature, with an insulat ing substance indicated at 5 in Figs. 8 and 9; for a'purpose which will be explained fully hereinafter.

The overlapping edges 2 of the portion 1 are secured by soldering or in any other practicable way. If desired, these edges may be fastened by clenching, and soldering dispensed with, will be understood. When the bottom is to be applied, the wad r is inserted at one end of the portion 1 and pushed through to the other with a'rammer; and when this operation is being performed, the portion 1 should first be set ,upright on a flat surface, so that the wad can easily and quickly be forced to assume its" correct position.

Figs. 10, 11, 12 and 13 present another form of in y improved container. This form is made exactly like that shown in Figs. 5, 6 and 7, with the difference that the metal blank 1 is stamped out so that it has teeth or points 6 at one end. After the blank is made as in Fig. 10, it is shaped like a cylinder and its overlapping edges 2 secured together; and the teeth 6 are bent over, as shown in Figs. 11, 12 and 13 in the same n'1an1'1er as 'the rim 3. Usually the wad 4:, which is illustrated in position in the portion 1 on Fig. 13, is inserted into the main portion in this mmlification of my container, and the teeth 6 bent over, at a single operation; and when this container is completed, the wad will be adjacent the end of the main portion, as in the preceding forms.

When any of the forms of container embodying my invention is finished; as by shaping the main portion 1 and adding the wad 4, it may be charged in the usual way. As seen in Fig. A. the portion 1 constitutes one of the v \ctrodes of the battery; and a ine'i'n'ber including a rod of carbon 7 with a cap 8, on titutes the-other. "lhis member will be centrally located in the container,

of manganese dioxid and graphite, moistened with a' solution of ammonium chlorid or other suitable ingredients; thiscore being provided with a covering of cloth 10, se-

. cured by a cord 11. Between the core 9 and the inside surface of the portion 1 is an 1nsulating ring, such as a rubber band 12, designed-to hold the core 9 out of contact with the portion 1 and thus prevent a short circuit in the battery. The space wherein the band 12 is placed is filled with a paste 18, containing ammonium chlorid and other compounds, to react upon the ingredients of the core 9 and give the chemical reactions that will generate an electromotive force between the electrodes 1 and 7. Above the core 9 and paste 13 will be a layerof Wax 14:; and over the wax 14 is a perforated closure of paper or otherinsulation 15; A disk 16, of paper or the like, is also put into the container on the wad 4, before the core 9 and paste 13 are introduced into the portion 1.

In manufacturing the battery, the core 9 with the member 7 inside it and the band 12 surrounding it, is inserted into the contai'ner first; and the paste 13 is next sup-' plied. The container is then subjected to the action of heat, as'by putting it into a bath of hot water; whereby the paste 13 is coagulated and thickened. I then pour in the paraffin '14, slip the closure 15 over the member 7, and affix the cap 8 thereto.

The insulating substance or plastic 5 on the wad -1 preferably includes paraffin and rosin. During the hot water bath, the paraflin is softened and becomes partly fluid; whereby it is enabled to fill every minute crack or opening between the inner face of the portion 1 and the periphery of'the wad. As a result, the paraiiin acts as a seal; making a perfect leakproof joint between the portion 1 and the wad f and the rosin, which also becomes plastic, has the effect of making the contacting faces of the portion 1 and the wad a engage and stick tightly together. Hence the wad not only closes up the one end of the portion 1 in such a way as to obviate the risk of loss of the contents by leakage, by reason of the presence of the paraiiin; but it also, by the action of the rosin, is enabled to resist being pushed either into or out of the portion 1, in the form shown in Figs. 2, 3 and 4, and into the portion 1 in the forms of my invention illustrated in Figs. 5, 6, 7, 11, 12, and 13; the rim 3 and teeth 6 holding the wad against displacement outward of the portion 1.

From the foregoing, the practical utility aeiaees or? my invention will be apparent. y using the insulating wad d, I am enabled to save metal and to assemble the parts of the container in a quicker, easier and cheaper manner; since the preparation. of the wad with thelnsulating substance thercon and its insertion into the main portion of the container involve less labor and expense than the making of a metal disk 1nd the soldering oi the latter to the main Fin tnerrnore, the purpose oi the substance including the parafin and rosin,

or equivalent substances which I may of course employ, always gives a tight, leak proof connection. between the portion 1 and the wad e; because of the eiit'ect of the hot I Water bath in which the battery is dipped; :and this tight, leakprooi' connection 13 not dependent upon the carefulness of the operative, as is the case when a metal. disk soldered portion. 1 by hand. Hence the dcsir d result infalli'bly obtained, no

ter how ignorant or careless a work- 212111 may be; and a defective container cannot be produced. lWhen metal bottoms, soldered to theportion 1, are used instead of the wads l, the number of containers that are detective and leaky is from five t ten per cent.,-depending on. the individual worlnnan. i

The importance of obviating leakage is due to the fact that leakage would not only mean loss of the contents of thebattery; also would be capable of giving rise to action and possible short-circuiting between adjacent cells or batteries when a number thereof is used. These batteriesare side by side in a'casing, with insheets between them. ough bottom of the container cothe insulation c uld be in danger n'egrating and allowing the escaping to creep from one container to a flooring one; with consequent impairof the action of the battery and reduction of output.

"l ,cztlz y n'wans of my invention; and in addition lace a battery of superior merit, ca-

,a neof higher efficiency, greater durabihig v, and onger life under all conditions oi SNTIQC.

particular chemical substances used to make up the core 9 and the fpaste" 13 surrcumfling it are of course no part of my ion; asthey may be any of the well known compounds or -miXtures employed in bat ies of this character. d: further allow .myself the same freedom of choice If leakage drawbacks are entirely overcome with regard to the materials used in, the

My improved battery container may of course be made in any size, and the number of teeth 6 may be varied at will. Likewise, my. container may be utilized for batteries used for other purposes than in flashlights.

Having described my invention, what I believe to be new and desire to secure and protect by Letters Patent of the United States is l. A container for an electricbattery comprising a main portion of electrically conductive material and an imperforate Wad of insulating material in said portion adjacent one end thereof, said wad constituting the bottom of the container, said portion extending inward adjacent said end to retain said wad against displacement therethrough.

2. A container for an electric battery comprising a tubular main portion of electrically conducting material, an imperforate wad of insulating material in said portion, having its periphery engaged thereby, said wad being located adjacent one end of the main portion and constituting the bottom of the container, and an insulating substance coating the wad and engaging the wad and the main portion, said substance including an ingredient to make a leakproof joint between the Wad and the main portion, and an adhesive to secure the wad and the main portion together.

3. A container for an electric battery comprising atubular main portion of electrically conducting material, said portion having one terminal edge provided with inward extending teeth, and an imperforate wad of insulating material in said portion abutting said teeth and constituting the bottom of the container.

e. A container for an electric battery comprising a tubular main portion of electrically, conductive material, and an imperferate wad of insulating material in said portion, adjacent one end, and constituting the bottom of said container, said tubularmain portion extending inwar adjacent said end to engage the wad and o prevent displacement of the wad through said end, and means engaging the wad in the main portion to make a leak-proof joint between the wad and the main portion and to secure the wad and the main portion together.

In testimony whereof, I have signed my name to this specification this 18th day of