US1320637A - Method of producing mica insulators for spark-plugs - Google Patents
Method of producing mica insulators for spark-plugs Download PDFInfo
- Publication number
- US1320637A US1320637A US1320637DA US1320637A US 1320637 A US1320637 A US 1320637A US 1320637D A US1320637D A US 1320637DA US 1320637 A US1320637 A US 1320637A
- Authority
- US
- United States
- Prior art keywords
- disks
- stack
- spark
- plugs
- insulators
- 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
- 239000012212 insulator Substances 0.000 title description 34
- 239000010445 mica Substances 0.000 title description 26
- 229910052618 mica group Inorganic materials 0.000 title description 26
- 238000001035 drying Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000009736 wetting Methods 0.000 description 8
- 229920001800 Shellac Polymers 0.000 description 6
- 229940113147 shellac Drugs 0.000 description 6
- 235000013874 shellac Nutrition 0.000 description 6
- 239000004208 shellac Substances 0.000 description 6
- 239000002966 varnish Substances 0.000 description 6
- 101700078171 KNTC1 Proteins 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 241001325354 Lamiinae Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
- B32B38/1841—Positioning, e.g. registration or centering during laying up
- B32B38/185—Positioning, e.g. registration or centering during laying up combined with the cutting of one or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
Definitions
- the method above described was also very expensive as it was practically impossible for the operator to rightly judge the number of uncompressed mica disks which would be needed to compress to a predetermined length of insulator, thus entailing the time and trouble of removing the pressure means and adding or subtracting the disks as might be necessary to produce the length desired.
- the mica insulators were, therefore, unsatisfactory because oftheir lack of uniformity, leakage and consequent inefliciency, short life and expense by reason of the number of operations involved.
- the object of our invention is to overcome the faults above enumerated and to produce, in a very simple and inexpensive manner, uniform, highly compressed, non-leakable mica insulators. This is obtained by first wetting the stack of disks, compressing them while wet, and drying the disks while compressed to form a unitary body, from which an insulator of the desired length may be severed. We have discovered that by wetting the disks, the stacks may be compressed to a muchgreater degree than heretofore and that the disks will properly seat themselves, thus obtaining greater uniformity as well as greater density.
- Figure 1 is a diagrammatic view showing the step of wetting the mica disks while mounted on their core rod
- Fig. 2 is a view partly in side elevation and partly in section of a press with a stack of wet uncompressed mica disks in position therein ready to be compressed,
- Fig. 3 is an end view of the same, 7
- Fig. 4 is a section taken in the plane of the line IVIV of Fig. 2
- Fig. 5 is a view similar to Fig. 2, after-the stack has been compressed and the core rod removed, I
- Fig. 6- is a side view of the insulator stack after it has been pressed into a unitary body and dried, and
- Fi 7 is a View. of an insulator of the desired length severed from the stack.
- the mica disks are first wet.
- the disks are wet with aresinous liquid, such, for instance, as shellac varnish. This 'may be accomplished by stringing the disks on their core rod 1 and submerging the same in a suitable tank 2, containin the liquid 3.
- the stack of disks is then p aced in a suitable press and the desired endwise pressureis exerted on the said stack-
- This press may be of any suit- In the present instance plates 4, 5, the intermediate oppositely arranged V-shaped troughs 6,7, for engaging the periphery of thestack and the hollow pressure screws 8, 9, which have a screw threaded engagementwith their respective plates 4, 5, and which loosely surround the core rod 1
- These screws 8, 9, have heads 10, 11 fitted to the ends of the stack within the troughs 6, 7.
- the troughs 6, 7, have screw threaded lugs 12 projecting through the plates 4, 5, and nuts 13 engage said screw threaded lugs exterior to the plates to hold the plates and troughs in assembled adjustment.
- the core bar 1 is removed and the stack of disks while still under compression is dried, as, for instance, by placing the press in an oven with a comparatively low heat.
- This oven is not shown in the accompanying drawing, as it is obvious that any suitable means may be employed for drying the stack.
- the compressed stack After the compressed stack has been dried, it is removed from the press and 110 an insulator of the desired length may be severed therefrom.
- This insulator Will be a unitary body of great density and Will be suitable for use in spark plugs exposed to extreme heat and pressure.
- the method of producing mica insulators for spark plugs consisting in Wetting the mica disks With a resinous liquid, such for instance as shellac varnish, compressing the disks While wet, drying the same While compressed, to form a unitary body, and
- tors for spark plugs consisting in stringing on a core rod more disks than are needed for the insulator length desired, submerging the same ina tank of resinous liquid, such for instance as shellac varnish, removing the stack from the tank, subjecting the stack While Wet to great endwise pressure, removing the core rod, drying the stack at a low heat While compressed, to form a unitary body, removing the pressure, and severing from the stack the length desired by the insulator.
- resinous liquid such for instance as shellac varnish
Description
A. R. MOSLER AND G. MARGOLIN.
METHOD OF PRODUCING MICA INSULATORS FOR SPARK PLUGS.
APPLICATION FILED JAN. 26. NHL
Patented Nov. 4, 1919.
STATES PATENT @FFTQE.
ARTHUR a. MosLn'n. AND EORGE MABGOLIN, or NEW YORK, n. Y., ASSIGNORS To A. n.
mosnma co., or NEW YORK, N. Y., A. CORPORATIQNOF NEW YORK.
Specification of Letters Patent.
Patented Nov. 4, 1919.
Application filed January 26, 1918. Serial No. 214,023.
To all whom it may concern:
Beit known that we, ARTHUR R. MOSLER and GEORGE MARGOLIN, citizens of the United States, and residents of the borough of Manhattan, in the city and State of New York, have invented a new and useful Method of Producing Mica Insulators for Spark-Plugs, of which the following is a specification.
In the manufacture of mica insulators for spark plugs, it has been customary to subject the stack of mica disks to pressure while in their dry state to compress them as much as possible.
By this method it was impossible to produce uniform insulators and to prevent leakage when the insulators were in use. The reasons for this were that it was impossible to sufficiently compress the disks to eliminate the air pockets between the laminae and that it was also impossible to secure a maximum and uniform compression because the disks wereuneven and were not free to turn one on another to properly seat themselves as they were being compressed.
The method above described was also very expensive as it was practically impossible for the operator to rightly judge the number of uncompressed mica disks which would be needed to compress to a predetermined length of insulator, thus entailing the time and trouble of removing the pressure means and adding or subtracting the disks as might be necessary to produce the length desired. The mica insulators were, therefore, unsatisfactory because oftheir lack of uniformity, leakage and consequent inefliciency, short life and expense by reason of the number of operations involved.
The object of our invention is to overcome the faults above enumerated and to produce, in a very simple and inexpensive manner, uniform, highly compressed, non-leakable mica insulators. This is obtained by first wetting the stack of disks, compressing them while wet, and drying the disks while compressed to form a unitary body, from which an insulator of the desired length may be severed. We have discovered that by wetting the disks, the stacks may be compressed to a muchgreater degree than heretofore and that the disks will properly seat themselves, thus obtaining greater uniformity as well as greater density.
In the accompanying drawings,
able construction.
we have shown a press comprlsing the end Figure 1 is a diagrammatic view showing the step of wetting the mica disks while mounted on their core rod,
Fig. 2 is a view partly in side elevation and partly in section of a press with a stack of wet uncompressed mica disks in position therein ready to be compressed,
Fig. 3 is an end view of the same, 7
Fig. 4 is a section taken in the plane of the line IVIV of Fig. 2
Fig. 5 is a view similar to Fig. 2, after-the stack has been compressed and the core rod removed, I
Fig. 6- is a side view of the insulator stack after it has been pressed into a unitary body and dried, and
Fi 7 is a View. of an insulator of the desired length severed from the stack.
In producing our improved mica insulator, the mica disks are first wet. In the present instance, the disks are wet with aresinous liquid, such, for instance, as shellac varnish. This 'may be accomplished by stringing the disks on their core rod 1 and submerging the same in a suitable tank 2, containin the liquid 3. The stack of disks is then p aced in a suitable press and the desired endwise pressureis exerted on the said stack- This press may be of any suit- In the present instance plates 4, 5, the intermediate oppositely arranged V-shaped troughs 6,7, for engaging the periphery of thestack and the hollow pressure screws 8, 9, which have a screw threaded engagementwith their respective plates 4, 5, and which loosely surround the core rod 1 These screws 8, 9, have heads 10, 11 fitted to the ends of the stack within the troughs 6, 7. The troughs 6, 7, have screw threaded lugs 12 projecting through the plates 4, 5, and nuts 13 engage said screw threaded lugs exterior to the plates to hold the plates and troughs in assembled adjustment.
After. the stack of disks has been compressed the core bar 1 is removed and the stack of disks while still under compression is dried, as, for instance, by placing the press in an oven with a comparatively low heat. This oven is not shown in the accompanying drawing, as it is obvious that any suitable means may be employed for drying the stack. After the compressed stack has been dried, it is removed from the press and 110 an insulator of the desired length may be severed therefrom. This insulator Will be a unitary body of great density and Will be suitable for use in spark plugs exposed to extreme heat and pressure.
We have found that in compressing the disks While Wet,,that they not only compress to a considerably greater degree than when dry but that also they have a tendency to turn one upon another to properly seat themselves thus eliminating the chances of leaving air pockets and other leakage points in the stack.
What'We claim is 1. The method of producing mica insulators for spark plugs consisting in Wetting the mica disks With a resinous liquid, such for instance as shellac varnish, compressing the disks While wet, drying the same While compressed, to form a unitary body, and
tors for spark plugs consisting in stringing on a core rod more disks than are needed for the insulator length desired, submerging the same ina tank of resinous liquid, such for instance as shellac varnish, removing the stack from the tank, subjecting the stack While Wet to great endwise pressure, removing the core rod, drying the stack at a low heat While compressed, to form a unitary body, removing the pressure, and severing from the stack the length desired by the insulator.
In testimony, that We claim the foregoing as our invention, We. have signed our names this 10th day of January, 1918.
ARTHUR R. MOSLER. GEORGE MARGOLIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US1320637A true US1320637A (en) | 1919-11-04 |
Family
ID=3388105
Family Applications (1)
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US1320637D Expired - Lifetime US1320637A (en) | Method of producing mica insulators for spark-plugs |
Country Status (1)
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- US US1320637D patent/US1320637A/en not_active Expired - Lifetime
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