US1711739A - Nitrocellulose lacquer for sealing tops of dry cells - Google Patents

Nitrocellulose lacquer for sealing tops of dry cells Download PDF

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Publication number
US1711739A
US1711739A US234907A US23490727A US1711739A US 1711739 A US1711739 A US 1711739A US 234907 A US234907 A US 234907A US 23490727 A US23490727 A US 23490727A US 1711739 A US1711739 A US 1711739A
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United States
Prior art keywords
sealing
lacquer
cell
dry cells
dry
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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
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US234907A
Inventor
Paul A Marsal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Carbon Co Inc
Original Assignee
Nat Carbon Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nat Carbon Co Inc filed Critical Nat Carbon Co Inc
Priority to US234907A priority Critical patent/US1711739A/en
Application granted granted Critical
Publication of US1711739A publication Critical patent/US1711739A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic material
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making
    • Y10T29/4911—Electric battery cell making including sealing
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making
    • Y10T29/49115—Electric battery cell making including coating or impregnating

Definitions

  • PAUL A MABSAL, OF LAKEWOOD, OHIO, ASSIGNOI R. TO NATIONAL CARBON COMPANY, INC., A CORPORATION OF NEW YORK.
  • This invention relates to dry battery cells and has particular reference to means for sealing such cells against the escape of moisture, while at the same time providing means for dissipating interior gas pressure.
  • any customary cell assembling procedure may be followed.
  • a thin coating of Intro-cellulose lacquer is applied directly over the top of the mix body.
  • the cell is of a type in which a paste coating or other lining material extends over .the top of the depolarizing mix, then said lining or coating is completely covered with the lacquer.
  • An additional seal composed of any of the common sealing compounds such as rosin. sealing wax, pitch, or the like may then be applied if desired.
  • a number of nitro-cellulose lacquers containing a variety of solvents are obtainable at the present time. I do not wish to limit the invention to the use ofany particular grade or type of such lacquer, since I have found that any of the so-called nitro-cellulose lacquers having the property of drying very rapidly and leaving a tenacious film of mem; branous character, may be used for the purpose of this invention.
  • a solution of pyroxylin in a highly volatile solvent such as an ether-alcohol mixture, or a solution of an ether soluble cellulose derivative such as cel lulose acetate or cellulose ethers in a suitable solvent, may also be used to form a satisfae tory coating over the cell assembly.
  • the lacquer by pouring, but depending somewhat on the nature of the cellulose'so'lution being used, it may also be applied by brushing, spraying, or other suitable means,
  • the thickness of the applied coating will vary somewhat depending on the covering properties of the lacquer, but in all cases should be sufliciently thin to permit easy perforation by interior gas pressure and thus permit escape of the gases.
  • a method of sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a cellulosede rivative lacquer.
  • a method of sealing a dry cell which consists completely covering the top of the mix body with a thin film of a cellulose derivative lacquer, and adding an additional sea-ling compound.
  • a method of sealing a dry cell which consists in applying a thin coating of a solution of a cellulose derivative in a highly volatile solvent over the top of the mix body and its covering of lining material, allowing said solution to dry, and adding an additional sealing compound;
  • a method of'sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a nitro-cellulose lacquer.
  • a method of sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a nitro-cellulose lacquer, and adding an additional sealing compound. 4
  • a method of sealing a dry cell which consists in applying a thin coating of nitrocellulose lacquer over the top of the mix body and its covering of lining material, allowing the lacquer to dry, and adding an additional sealing compound.

Description

Patented May '3, 1929.
UldlTED STATES 1,711,739 PATENT OFFICE.
PAUL A. MABSAL, OF LAKEWOOD, OHIO, ASSIGNOI R. TO NATIONAL CARBON COMPANY, INC., A CORPORATION OF NEW YORK.
NITROGELLULOSE LAOQUER FOR SEALING TOPS OF DRY CELLS.
No Drawing.
This invention relates to dry battery cells and has particular reference to means for sealing such cells against the escape of moisture, while at the same time providing means for dissipating interior gas pressure.
It is generally known that one of the causes of the deterioration of dry cells prior to being put into service is the'escape of moisture through the crevices between the seal and the electrodes. In this manner the quantity of electrolyte solution is gradually diminished and the mix bobbin or the bibulous lining shrinks, thus materially increasing the internal resistance of the cell and eventually rendering it inoperative. It is probable also that air enters the cell through these same openings and increases zinc corrosion by depolarizing the centers of local action.
As a remedy for this trouble hermetic seal ing of dry cells has been suggested and tried, but with such a seal the internal pressure may become sufficient to distort or rupture some H portion of the cell unless elaborate means are provided for absorbing the gases evolved.
In accordance with my invention any customary cell assembling procedure may be followed. When the assembled electrodes and depolarizing mix are ready for sealing, a thin coating of Intro-cellulose lacquer is applied directly over the top of the mix body. It the cell is of a type in which a paste coating or other lining material extends over .the top of the depolarizing mix, then said lining or coating is completely covered with the lacquer. An additional seal composed of any of the common sealing compounds such as rosin. sealing wax, pitch, or the like may then be applied if desired.
A number of nitro-cellulose lacquers containing a variety of solvents are obtainable at the present time. I do not wish to limit the invention to the use ofany particular grade or type of such lacquer, since I have found that any of the so-called nitro-cellulose lacquers having the property of drying very rapidly and leaving a tenacious film of mem; branous character, may be used for the purpose of this invention. A solution of pyroxylin in a highly volatile solvent such as an ether-alcohol mixture, or a solution of an ether soluble cellulose derivative such as cel lulose acetate or cellulose ethers in a suitable solvent, may also be used to form a satisfae tory coating over the cell assembly.
Application filed November 21, 1927. Serial No. 234,907.
I prefer to apply the lacquer by pouring, but depending somewhat on the nature of the cellulose'so'lution being used, it may also be applied by brushing, spraying, or other suitable means, The thickness of the applied coating will vary somewhat depending on the covering properties of the lacquer, but in all cases should be sufliciently thin to permit easy perforation by interior gas pressure and thus permit escape of the gases.
The use of such acoating of lacquer or cellulose derivatives will effectively prevent the cell from drying out, and thus improve its shelf-lite and delayed service capacity. At the same time since the coating is easily perforated means are provided for escape of gases generated in the interior of the cell and also for expansion of paste which may take place when the cell is in service.
I claim:
.1. A method of sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a cellulosede rivative lacquer.
2. A method of sealing a dry cell which consists completely covering the top of the mix body with a thin film of a cellulose derivative lacquer, and adding an additional sea-ling compound.-
. 3. A method of sealing a dry cell which consists in applying a thin coating of a solution of a cellulose derivative in a highly volatile solvent over the top of the mix body and its covering of lining material, allowing said solution to dry, and adding an additional sealing compound;-
4. A method of'sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a nitro-cellulose lacquer.
5. A method of sealing a dry cell which consists in completely covering the top of the mix body with a thin film of a nitro-cellulose lacquer, and adding an additional sealing compound. 4
6. A method of sealing a dry cell which consists in applying a thin coating of nitrocellulose lacquer over the top of the mix body and its covering of lining material, allowing the lacquer to dry, and adding an additional sealing compound.
In testimony whereof, I afix my signature.
PAUL A. 'MARSAL
US234907A 1927-11-21 1927-11-21 Nitrocellulose lacquer for sealing tops of dry cells Expired - Lifetime US1711739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US234907A US1711739A (en) 1927-11-21 1927-11-21 Nitrocellulose lacquer for sealing tops of dry cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US234907A US1711739A (en) 1927-11-21 1927-11-21 Nitrocellulose lacquer for sealing tops of dry cells

Publications (1)

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US1711739A true US1711739A (en) 1929-05-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505014A (en) * 1946-04-25 1950-04-25 Paul M Terlizzi Dry cell having a plastic case
US2569159A (en) * 1947-01-09 1951-09-25 Gelardin Benjamin Gas permeable coating for dry cell flashlight batteries
US4375127A (en) * 1980-09-05 1983-03-01 Ford Motor Company Method of assembling and sealing an alkali metal battery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505014A (en) * 1946-04-25 1950-04-25 Paul M Terlizzi Dry cell having a plastic case
US2569159A (en) * 1947-01-09 1951-09-25 Gelardin Benjamin Gas permeable coating for dry cell flashlight batteries
US4375127A (en) * 1980-09-05 1983-03-01 Ford Motor Company Method of assembling and sealing an alkali metal battery

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