US1867249A - Electrolytic device - Google Patents

Electrolytic device Download PDF

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Publication number
US1867249A
US1867249A US537444A US53744431A US1867249A US 1867249 A US1867249 A US 1867249A US 537444 A US537444 A US 537444A US 53744431 A US53744431 A US 53744431A US 1867249 A US1867249 A US 1867249A
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United States
Prior art keywords
nipple
portion
gasket
washer
container
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
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US537444A
Inventor
Walter W Clark
John F Mccann
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SPRAGUE SPECIALTIES CO
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SPRAGUE SPECIALTIES CO
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Application filed by SPRAGUE SPECIALTIES CO filed Critical SPRAGUE SPECIALTIES CO
Priority to US537444A priority Critical patent/US1867249A/en
Application granted granted Critical
Publication of US1867249A publication Critical patent/US1867249A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/08Housing; Encapsulation
    • H01G9/12Vents or other means allowing expansion
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00Receptacles
    • Y10S220/27Vents

Description

July 12, 1932. w, w, CLARK ET AL 1,867,249

ELECTROLYTIC DEVICE Filed May 14, 1931 M4117 12 WCLA/PK JOHN F N- CA/V/V 1N VEN T 0R5 ATTORNEYS.

Patented July 12, 1932 UNITED STATES.

PATENT OFFICE WALTER W. CLARK AND JOHN F. MCCANN, NORTH ADAMS, MASSACHUSETTS, AS-

' SIGNORS TO SPRAGUE SPECIALTIES 00., 0F

CORPORATION OF MASSACHUSETTS ELECTROLYTIC DEVICE Application filed May 14,

- means to prevent leakage around the venting 4 the rubber member forming an electrolytic condenser embodying our invention.

Fig. 2 is a fractional side elevation, partly in section, showing a modification of our invention.

Fig. 3 is an enlarged perspective fractional view of the seating washer used in Fig. 1.

Fig. 4 is'an enlarged perspective fractional view of the seatingwasher used in Fig. 2.

Fig. 5 is an enlarged perspective view of the vent and the gasket. I

The electrolytic condenser as shown in Fig. 1 embodies a container 1 comprising an electrolyte 5 and an'electrode 4 centrally located within the container. The container 1 is of cylindrical shape and is, provided on its top with an annular reentrant portion 8 havin a central hole 9. The container '1 is open at t e bottomand adapted to receive a cover 3 of insulating material, which shoulders against a circular indentation 7 of the container. Therover is provided on its bottom side with an annular recess 14, in which is located a rubber gasket over which the free end of a the container 1 is spun as shown'at 16. The

cover 3 is provided with a central raised portion 6 and a central vertical bore 33' extending therethrough and adapted-to receive a stem '17, forming preferably an integral portion of the electrode 4.

The stem 17 is provided with a -tapered portion 13 which shoulders against the raised portion 6 of the cover 3, and its threaded end 17 projects below the cover to receive the washer 19, and nuts 18-18 which retain 1931. Serial No. 537,444.

means for the proper outside connection of NORTH ADAMS, MASSACHUSETTS, A

the electrode 4, such means being indicated by lug 18.

The electrode 4 is shown as a corrugated tube and is'of the type described in the copending-applications of F. D. Sprague and R. U. Clark, Serial No. 416,939, filed December 27 1929, and M. Knab, Serial No. 441,128, filed April 2, 1930, and forms the film-forming electrode of the condenser; whereas the container 1 is preferably of non-.filming metal and forms the other electrode of the con denser. 1

Located vwithin the reentrant portion 8' of the container and. resting on the central. hottom portion 8' thereof, is a rubber member 20 (see also Fig. 5), the central portion of which forms a nipple 22 provided on its top with a vent hole 23, which is normally closed, and opens in operation at intervals, under the pressure of accumulated gas. The outer. portion 21 of the member 20 is a flange which serves as a gasket, as will be hereafter explained.

A seating washer 25' (Fig. 3 preferably.

of copper or similar material, havlng a central hole" 26 surrounding the nipple 22, is placed on to of the member 20. The washer 25 is prefera 1y of inverted conical shape and so dimensioned that when pressed in the reentrant portion 8 it is collapsed or expanded whereby it not only compresses the rubber gasket 21, but also slightly deforms the walls of the container around the bottom 8' of the reentrant portion 8. It has'been also found advisable to so apply the pressure to the washer 25 that the gasket 21 is slightly more compressed at its central portion surrounding the nipple than at its peripheral portion. For the outside protection'of the nipple there is provided a protecting cap 10 tig tly (but not necessarily air-tightly) fitting in the reentrant portion 8, said cap being provided: with a downwardly extending peripheral rim 11 and also with'one or more vent holes In themodification shown (Figs. 2, 4) the seating washer 30 is provided with a circular depression 32 and an upwardly curled semi- 'circular rim 34; the washer 30 is also provided with a central hole 31 to receive the nipple 22. When pressing in the seating washer the rim 34 is closed and the container slightly deformed at its surface con- BI tacting with the'rim. The circular depression 32 is thereby embedded in the gasket 21. Instead of using a rubber member having a projecting nipple, a flat diaphragm having a central vent hole could also be used. How- 10 ever, such diaphragm having a uniform thickness determined by its function as a gasket would, because of this necessary thickness, require a considerablegas pressure to open the vent hole 23. When the rubber member has a central nipple as shown, the nipple can be made quite thin at the vent hole.

It will be seen that'the venting and sealing means of our construction are Very simple and easy to manufacture and assemble, and at the .same time provide a perfect seal preventing spilling of the electrolyte or creeping out of the salt from the electrolyte. At

' I the same time the nipple is also mechanically protected from injury.

While we have described our invention in connection with specific embodiments and in a specific application, we do not wish to be limited to-such embodiments and application, but desire the appended tclaims to be .con- 80 str'ued as broad as permissible in view of the prior art. What we claim and desire to secure by Letters Patent is:

.1. In an electrolytic device, the combina- 35 tion of a container having a reentrant portion provided with a'perforation, a compressible gasket having a nipple, said nipple registering with the perforation of the reentrant portion,-and a perforated washer surrounding said nipple and compressing said gasket, whereby an air and liquid tight seal is provided between the gasket and the reentrant portion.

2. In an electrolytic device, the combina tion of a container having a reentrant portion provided with a perforation, a compres sible gasket having a perforation registering with that of the r'eentrant portion, and a.

washer of substantially conical formation, said washer adapted to be pressed into the reentrant portion of the container whereby said washer expands and deforms the side" disposed in said reentrant portion, and a perforated washer adapted to be collapsed into the reentrant portion of the container to compress the. gasket and surround the nipple, said washer being deformed when so pressed in and providing a tight seal between the gasket and the reentrant portion.

5. In an electrolytic device, the combination of a container having a reentrant portion provided with a perforation, a compressible gasket having a nipple, and a perforated washer surrounding said nipple and compressing said gasket to form an air-tightseal 35 between the gasket and the reentrant portion, and a cap in the reentrant portion on top of the nipple to protect the latter from mechanical injury.

6. In an electrolytic device, theacombination of .a container provided with an opening and 'a compressible gasket having a perforated nipple registering with such opening, a washer surrounding the nipple, said washer compressing the gasketand being provided with a depressed portion to compress the portion of the gasket around the nipple to a greater extent than the remaining portion of the gasket.

7. In an electrolytic device, the combina- 100 tion of a container having a reentrant portion provided with an opening, a compressible gasket having a perforated nipple registering. with, such opening, and a washer, the latter surrounding the nipple and being provided 105 with a depression compressing the portions of the washer around the nipple against the 1 base of said reentrant portion, and being provided with a curled outer edge engaging the walls of the reentrant portion and tightly no fitting thereagainst.

North Adams, Mass, May 12, 1931.

I WALTER -W. CLARK..

JOHN F. MoCANN.

walls of the latter to form a tight fit between tion and to compress the gasket.

- tion of a container. having .a perforated reentrant portion, a resilient gasket having a perforated portion registering with the perforation of the said reentrant portion, and a the washer and the walls of the'ieentrant porwasher adapted to compress saidgasket against the wall of the reentrant portion, said washer being conical and adapted to be inserted into said reentrant portion and when so inserted to be deformed, whereby the por-

US537444A 1931-05-14 1931-05-14 Electrolytic device Expired - Lifetime US1867249A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516084A (en) * 1944-10-04 1950-07-18 Willard Storage Battery Co Storage battery
US2922833A (en) * 1955-02-28 1960-01-26 Accumulatoren Fabrik Ag Fa Pressure responsive safety device
US8451587B2 (en) 2000-11-03 2013-05-28 Cardiac Pacemakers, Inc. Method for interconnecting anodes and cathodes in a flat capacitor
US8543201B2 (en) 2000-11-03 2013-09-24 Cardiac Pacemakers, Inc. Flat capacitor having staked foils and edge-connected connection members
US8744575B2 (en) * 2000-11-03 2014-06-03 Cardiac Pacemakers, Inc. Flat capacitor for an implantable medical device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516084A (en) * 1944-10-04 1950-07-18 Willard Storage Battery Co Storage battery
US2922833A (en) * 1955-02-28 1960-01-26 Accumulatoren Fabrik Ag Fa Pressure responsive safety device
US8451587B2 (en) 2000-11-03 2013-05-28 Cardiac Pacemakers, Inc. Method for interconnecting anodes and cathodes in a flat capacitor
US8543201B2 (en) 2000-11-03 2013-09-24 Cardiac Pacemakers, Inc. Flat capacitor having staked foils and edge-connected connection members
US8744575B2 (en) * 2000-11-03 2014-06-03 Cardiac Pacemakers, Inc. Flat capacitor for an implantable medical device
US9443660B2 (en) 2000-11-03 2016-09-13 Cardiac Pacemakers, Inc. Flat capacitor for an implantable medical device
US10032565B2 (en) 2000-11-03 2018-07-24 Cardiac Pacemakers, Inc. Flat capacitor for an implantable medical device

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