US1650319A - Seal for galvanic cells - Google Patents
Seal for galvanic cells Download PDFInfo
- Publication number
- US1650319A US1650319A US711730A US71173024A US1650319A US 1650319 A US1650319 A US 1650319A US 711730 A US711730 A US 711730A US 71173024 A US71173024 A US 71173024A US 1650319 A US1650319 A US 1650319A
- Authority
- US
- United States
- Prior art keywords
- seal
- cell
- disc
- rod
- galvanic cells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This invention relates to sealing means for primary galvanic cells, especially tdry cells of the Le Clanch type.
- a particular object of the invention is tol provide a seal capable of substantially preventing ⁇ access of air to the cell but permitting escape of gases generated in it.
- Y Further objects are to simplify and reduce the cost of sealing vdry cells, to provide a strong, relatlvely 1nfrangible seal adapted to reinforce the end of the cell, and to secure other advantages, as more fully described hereinafter.
- Fig. 1 is a partial vertical section through a cell comprising the improved seal
- Fig. 2 is a top plan view of the cell
- Fig. 3 is aperspective view of the cathode
- Fig. 4 is a vertical section through a cell having a bobbin of length greater than normal.
- reference numeral 1 denotes a zinc container electrode in which a depolarizing bobbin 2 is enclosed.
- The' container is spun inwardly to form an annular seat- 3 for a sealing disc 4.
- This is best made of relatively stiff waterproofed cardboard, bonded fiber, or the like.
- insulating material will serve which has thev essential qualities of strength and some degree ⁇ of flexibility.
- the rim 5 of the container is bent to overlie the disc and hold it firmly in position. This method of securing a sealing disc is old in the dry cell art and does not in itself form a part of the present invention. Any suitable marginal retaining means may be adopted.
- the novelty of the present seal lies chiefly in the provision of the central perforation 6 receiving the end 7 of carbon rod 8. As shown, the end 7 is of less diameter than the body of the rod 8, and the disc 4 is supported centrally by the annular shoulder 9 thus formed upon the rod. Any other suitable means of supporting the disc may be adopted.
- the diameter of perforation 6 is slightly greater thanthat of .end 7, and the surface of the disc is somewhat below metal cap 10, which is preferably affixed to the rod after the seal is in place.
- the disc 4 may be elevated at the ⁇ center by gaseous pressure developed in the cell, and that the gases may oai 1924.
- the carbon rod maybe formed by extrusion, molding, or any other suitable method.
- the reduced end of the rod should be machined to a diameter lying between rather close limits, so as to insure a proper lit in the central perforation of the disc.
- the body of the rod may of course vary considerably, so long as an adequate seating shoulder remains.
- the machining of the end of the rod is further desirable because it ensures an accurate fit and good contact with the brass cap. This is important in all cases, but especially where a number of cells are connected in series, as in B batteries. A sin-v gle defective contact may result in wholly' or partially destroying the effectiveness of the battery.
- the end of the carbon rod may be treated to prevent creepage of electrolyte. Impregnation with araiiin, coating with asphalt paint, or the ike, are satisfactory.
- the improved seal permits gases to escape, it is unnecessary to provide a large gas space.
- the seal is relatively thin as compared with the ordinary seals of thermoplastic substances.
- the space thus saved may serve to receive eXuded paste and Y it is therefore feasible to use a longer bobbin than in cells having a thick seal.
- Important advantages are obtained in this way. Even small ⁇ increase in the bobbin length, in cells having normal external dimensions, results in material extension of service life.
- Fig.- 4 a cell with elongated bobbin is illust-rated.
- the space 11 is adequate to receive paste whlch may be forced upward on heavy service.
- the improved seal eliminates the troubles characteristic of the thermoplastic seals, such as chipping, breaking, and failure to .make an air-tight junction with the cell wall and carbon rod. Also, the automatic valve action of the present seal, relieving gaseous pressure in the cell, is an important improvement over rigid preformed seals provided with gas chambers, as heretofore proposed.
- a galvanic cell comprising a container, a sealing member adjacent to one end of the container, means ri 'dly holding the margin of the sealing mem'er, a seat, andan interior portion of said member normallyl resting on said seat but adapted to be displaced therefrom t0 permit escape of gases generated in the cell.
- a dry cellv comprising a zinc cup, a
- Acarbon rod electrode therein an insulating disc secured at its margin in the open end of the cup and having a perforation to receive .the end of the carbon rod, means on the rod forming a seat normally occupied by the central portion of the disc, said portion having sufficient lexibility to permit discharge of gases under pressure in the cell.
- the carbon rod is provided with an irggral shoulder to orm'the seat for the at its margin in an annular grooved portion of the cup adjacent the upper end thereof and havin a perforation to receive the end of the car n rod, the central portion of said disc normally seating on the shoulder portion of the carbon rod and having Suicient lexibility to permit discharge of gases' under pressure in the cell.
- a carbon rod electrode having near one end a reduced portion forming a shoulder, a flexible closure for the cell adapted normally to rest upon the said shoulder to seal the cell but adapted to be displaced therefrom to permit escape of gases generated in the cell.
- a dry cell comprising a zinc cup, a
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
Description
Nov. 22, 1927.
A. J. BRIGGS SEAL Foa GALVANIC CELLS Filed May 7, 1924 in Il (III u gy
btoz mman Patented Nov. 22, 1927.
UNITED STATES PATENT OFFICE.
ARTHUR J'. RIGGS, 0F SYRACUSE, NEW YORK, ASSIGNOR TO NATIONAL ,CARBON COM- PANY, INC., A CORPORATION OF NEW YORK.
SEAL ron GALvANIc CELLS.
Application led May 7,
This invention relates to sealing means for primary galvanic cells, especially tdry cells of the Le Clanch type. A particular object of the invention is tol provide a seal capable of substantially preventing` access of air to the cell but permitting escape of gases generated in it. Y Further objects are to simplify and reduce the cost of sealing vdry cells, to provide a strong, relatlvely 1nfrangible seal adapted to reinforce the end of the cell, and to secure other advantages, as more fully described hereinafter.
Reference is to be made to the accompanying drawing, illustrating preferred embodiments of the invention.
Fig. 1 is a partial vertical section through a cell comprising the improved seal;
Fig. 2 is a top plan view of the cell;
Fig. 3 is aperspective view of the cathode; and
Fig. 4 is a vertical section through a cell having a bobbin of length greater than normal.
In Figs. 1 to 3 of the drawings, reference numeral 1 denotes a zinc container electrode in which a depolarizing bobbin 2 is enclosed. The' container is spun inwardly to form an annular seat- 3 for a sealing disc 4. This is best made of relatively stiff waterproofed cardboard, bonded fiber, or the like. Any
insulating material will serve which has thev essential qualities of strength and some degree`of flexibility. The rim 5 of the container is bent to overlie the disc and hold it firmly in position. This method of securing a sealing disc is old in the dry cell art and does not in itself form a part of the present invention. Any suitable marginal retaining means may be adopted.
The novelty of the present seal lies chiefly in the provision of the central perforation 6 receiving the end 7 of carbon rod 8. As shown, the end 7 is of less diameter than the body of the rod 8, and the disc 4 is supported centrally by the annular shoulder 9 thus formed upon the rod. Any other suitable means of supporting the disc may be adopted. The diameter of perforation 6 is slightly greater thanthat of .end 7, and the surface of the disc is somewhat below metal cap 10, which is preferably affixed to the rod after the seal is in place.
It will be clear that the disc 4 may be elevated at the` center by gaseous pressure developed in the cell, and that the gases may oai 1924. Serial No. 711,730.
der 9, there is little diffusion of air between the cell and the atmosphere. Drying out is therefore substantially prevented. In order to insure a positive seating of the disc and to hold the bobbin in position, it is desirable to form the annular seatslightly lower than the shoulder 9 on the carbon electrode. This causes the disc to exert a continuous downward pressure upon the shoulder.
The carbon rod maybe formed by extrusion, molding, or any other suitable method. The reduced end of the rod should be machined to a diameter lying between rather close limits, so as to insure a proper lit in the central perforation of the disc. The body of the rod may of course vary considerably, so long as an adequate seating shoulder remains.
The machining of the end of the rod is further desirable because it ensures an accurate fit and good contact with the brass cap. This is important in all cases, but especially where a number of cells are connected in series, as in B batteries. A sin-v gle defective contact may result in wholly' or partially destroying the effectiveness of the battery.
If desired, the end of the carbon rod may be treated to prevent creepage of electrolyte. Impregnation with araiiin, coating with asphalt paint, or the ike, are satisfactory.
Since the improved seal permits gases to escape, it is unnecessary to provide a large gas space. Further, the seal is relatively thin as compared with the ordinary seals of thermoplastic substances. The space thus saved may serve to receive eXuded paste and Y it is therefore feasible to use a longer bobbin than in cells having a thick seal. Important advantages are obtained in this way. Even small `increase in the bobbin length, in cells having normal external dimensions, results in material extension of service life. In Fig.- 4 a cell with elongated bobbin is illust-rated. The space 11 is adequate to receive paste whlch may be forced upward on heavy service. ,y
The improved seal eliminates the troubles characteristic of the thermoplastic seals, such as chipping, breaking, and failure to .make an air-tight junction with the cell wall and carbon rod. Also, the automatic valve action of the present seal, relieving gaseous pressure in the cell, is an important improvement over rigid preformed seals provided with gas chambers, as heretofore proposed.
The invention is not limited to the specific type of cell and seal construction illustrated. Various modications may be made Within the scope of the appended claims.
I claim:
1. A galvanic cell comprising a container, a sealing member adjacent to one end of the container, means ri 'dly holding the margin of the sealing mem'er, a seat, andan interior portion of said member normallyl resting on said seat but adapted to be displaced therefrom t0 permit escape of gases generated in the cell.
-2. A dry cellv comprising a zinc cup, a
Acarbon rod electrode therein, an insulating disc secured at its margin in the open end of the cup and having a perforation to receive .the end of the carbon rod, means on the rod forming a seat normally occupied by the central portion of the disc, said portion having sufficient lexibility to permit discharge of gases under pressure in the cell.
`3. The invention-,according to claim 2, in which the carbon rod is provided with an irggral shoulder to orm'the seat for the at its margin in an annular grooved portion of the cup adjacent the upper end thereof and havin a perforation to receive the end of the car n rod, the central portion of said disc normally seating on the shoulder portion of the carbon rod and having Suicient lexibility to permit discharge of gases' under pressure in the cell.
5. In a dry cell, a carbon rod electrode having near one end a reduced portion forming a shoulder, a flexible closure for the cell adapted normally to rest upon the said shoulder to seal the cell but adapted to be displaced therefrom to permit escape of gases generated in the cell.
6. A dry cell comprising a zinc cup, a
seal of thin sheet material in the open end of the cup and displaceable from its sealing position by internal pressure to permit escape of generated gases, a paste receiving chamber in the space normally occupied by. the usual thermoplastic seal, and a relatively elongated mix bobbin having its upper termination at the lower margin of said space. In testimony whereof, I aiiix my signature.
. ARTHUR J. BRIGGS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US711730A US1650319A (en) | 1924-05-07 | 1924-05-07 | Seal for galvanic cells |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US711730A US1650319A (en) | 1924-05-07 | 1924-05-07 | Seal for galvanic cells |
Publications (1)
Publication Number | Publication Date |
---|---|
US1650319A true US1650319A (en) | 1927-11-22 |
Family
ID=24859273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US711730A Expired - Lifetime US1650319A (en) | 1924-05-07 | 1924-05-07 | Seal for galvanic cells |
Country Status (1)
Country | Link |
---|---|
US (1) | US1650319A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2632032A (en) * | 1949-07-23 | 1953-03-17 | Olin Ind Inc | Air cell vent |
US2934584A (en) * | 1957-06-17 | 1960-04-26 | Servel Inc | Alkaline cell having controlled vents |
US2971045A (en) * | 1958-07-07 | 1961-02-07 | Sonotone Corp | Gas vent closure for electric storage batteries |
US3278340A (en) * | 1962-06-01 | 1966-10-11 | Varta Pertrix Union G M B H | Deformation-safe dry cell |
US3455482A (en) * | 1965-12-22 | 1969-07-15 | Svenska Ackumulator Ab | Safety valve |
US3923548A (en) * | 1972-05-24 | 1975-12-02 | Varta Batterie | Elastic gas valve for galvanic cells |
US4052533A (en) * | 1976-03-29 | 1977-10-04 | Union Carbide Corporation | Pressure relief flapper vent valve for galvanic cells |
US5855627A (en) * | 1992-05-04 | 1999-01-05 | Eveready Battery Company, Inc. | Process for producing a current collector assembly for an electrochemical cell |
US6855454B2 (en) | 2001-12-20 | 2005-02-15 | Eveready Battery Company, Inc. | Electrochemical cell having venting current collector and seal assembly |
US20080026286A1 (en) * | 2006-07-31 | 2008-01-31 | Eveready Battery Company, Inc. | Nail-type current collector with non-conductive core and surface metallization for electrochemical cell |
-
1924
- 1924-05-07 US US711730A patent/US1650319A/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2632032A (en) * | 1949-07-23 | 1953-03-17 | Olin Ind Inc | Air cell vent |
US2934584A (en) * | 1957-06-17 | 1960-04-26 | Servel Inc | Alkaline cell having controlled vents |
US2971045A (en) * | 1958-07-07 | 1961-02-07 | Sonotone Corp | Gas vent closure for electric storage batteries |
US3278340A (en) * | 1962-06-01 | 1966-10-11 | Varta Pertrix Union G M B H | Deformation-safe dry cell |
US3455482A (en) * | 1965-12-22 | 1969-07-15 | Svenska Ackumulator Ab | Safety valve |
US3923548A (en) * | 1972-05-24 | 1975-12-02 | Varta Batterie | Elastic gas valve for galvanic cells |
US4052533A (en) * | 1976-03-29 | 1977-10-04 | Union Carbide Corporation | Pressure relief flapper vent valve for galvanic cells |
US5855627A (en) * | 1992-05-04 | 1999-01-05 | Eveready Battery Company, Inc. | Process for producing a current collector assembly for an electrochemical cell |
US6855454B2 (en) | 2001-12-20 | 2005-02-15 | Eveready Battery Company, Inc. | Electrochemical cell having venting current collector and seal assembly |
US20050053832A1 (en) * | 2001-12-20 | 2005-03-10 | Ray Robert E. | Electrochemical cell having venting current collector and seal assembly |
US7122270B2 (en) | 2001-12-20 | 2006-10-17 | Eveready Battery Company, Inc. | Electrochemical cell having venting current collector and seal assembly |
US20080026286A1 (en) * | 2006-07-31 | 2008-01-31 | Eveready Battery Company, Inc. | Nail-type current collector with non-conductive core and surface metallization for electrochemical cell |
US20080070098A1 (en) * | 2006-07-31 | 2008-03-20 | Ray Robert E Jr | Electrochemical cell and current collector assembly therefor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1650319A (en) | Seal for galvanic cells | |
US3802923A (en) | Resealable vent closure for sealed galvanic dry cell | |
US3740271A (en) | Cylindrical dry cells | |
US2642471A (en) | Dry cell | |
US2289249A (en) | Dry cell battery | |
US2572918A (en) | Gas depolarized cell | |
US2450813A (en) | Leakproof dry cell | |
US2558654A (en) | Storage battery vent plug | |
US4207384A (en) | Electric storage batteries | |
US3338750A (en) | Leak-resistant dry cell | |
US3442716A (en) | Alkaline cell | |
US2149169A (en) | Dry cell | |
US2186148A (en) | Storage battery | |
US2060796A (en) | Dry cell | |
US2079495A (en) | Dry cell and seal therefor | |
US2606942A (en) | Dry battery | |
US1657543A (en) | Primary cell | |
US2092214A (en) | Battery | |
US2790022A (en) | Washer for use in primary cells | |
US4469764A (en) | Seal closure for a galvanic dry cell | |
US2179816A (en) | Closure for dry cells | |
US2524668A (en) | Dry cell | |
US2060832A (en) | Dry cell | |
US2402784A (en) | Top closure for leakproof dry cells | |
US2434703A (en) | Dry cell closure |