US1406542A - Electjeiode - Google Patents
Electjeiode Download PDFInfo
- Publication number
- US1406542A US1406542A US1406542DA US1406542A US 1406542 A US1406542 A US 1406542A US 1406542D A US1406542D A US 1406542DA US 1406542 A US1406542 A US 1406542A
- Authority
- US
- United States
- Prior art keywords
- electrode
- shell
- electrodes
- blank
- mold
- 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
- 238000000034 method Methods 0.000 description 28
- 239000007772 electrode material Substances 0.000 description 16
- SZVJSHCCFOBDDC-UHFFFAOYSA-N Iron(II,III) oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N TiO Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910001929 titanium oxide Inorganic materials 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B31/00—Electric arc lamps
- H05B31/02—Details
- H05B31/06—Electrodes
- H05B31/14—Metal electrodes
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/66—Processes of reshaping and reforming
Definitions
- My invention has reference to an improved process of making electrodes having the electrode material strongly compressed in a shell of metal. Electrodes of this general character are known in the art and among the electrodes thus constructed are principally those in which the electrode material is composed largely of magnetite with some additions of titanium oxide of fluxes. These electrodes are known as magnetite electrodes.
- My invention is designed to.and does overcome the defects of the old process of swaging or drawing, by so compressing the bumped electrode to a smaller cross-section that its length is not altered and the shell or casing is not reduced in thickness.
- Fig. 4 is a perspective view of thefinished product.
- the cylindrica-l shell 10 of the electrode blank is shown in Fig. 1 as filled with the electrode material 11, which is moderately compacted therein by bumping.
- One end of theshell is reduced in diameter as indicated at 12 by any desired process, and this neck of the electrode which is designed to be received in a holder in the lamp, is closed by a. thimble 13 before the electrode material is filled in, andthe wide open end of the shell is then closed by a cap 14.
- the electrode, so far described, is of the old type and which for the purposes of my invention is used as a blank.
- the press used inmy process consists of a heavy base 15 and a follower 16, the base being formed with a mold cavity 17 which has the length of the blank, but is provided at each end with a limit stop (not indicated in the drawing) so that the open cavity in the base block has just the length of the electrode blank, whereby the latter, in the subsequent step of the process, can only be compressed in cross section, but cannot be elongated.
- the die channel or mold cavity is here shown rectangular in form, and it is narrower than the diameter of the electrode blank, so that the latter, in its original cylindrical form, could not be entered into the die cavity.
- the final form of the electrode is shown in Fig. 4. It is rectangular in cross-section and may be square. It is, however, clear that the final cross-section of the electrode may be different; it may be polygonal or have any desired form if the mold cavity and the follower are suitably formed.
- the finished electrode is discharged from the mold in any suitable manner as, for instance, by one or more, expelling rods 18, indicated in Figs. 2 and 3.
Landscapes
- Metal Extraction Processes (AREA)
Description
I. S. CROCKER.
ELECTRODE.
APPLICATION FILED MAR. 11, 1921.
1 06,542 Patented. Feb. 14, 1922.,
Inventor Irving S. Crockerf,
His Attorney @FFEQE.
I IRVING- S. CRIOCKER, F LYNN, MASSACHUSETTS, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
ELECTRODE.
Application filed March 17, 1921.
T 0 all whom' it may concern:
Be it known that I, IRVING S. QRooKER, a citizen of the United States, residing at Lynn, in the county of Essex, State of Massachusetts, have invented certain new and useful Improvements in Electrodes, of which the following is a specification.
My invention has reference to an improved process of making electrodes having the electrode material strongly compressed in a shell of metal. Electrodes of this general character are known in the art and among the electrodes thus constructed are principally those in which the electrode material is composed largely of magnetite with some additions of titanium oxide of fluxes. These electrodes are known as magnetite electrodes.
Originally such electrodes were made by simply filling the ground ,magnetite material into an iron shell which was closed at one end and then bumping the electrode whereby the material became moderately compacted within the shell; after this, the open end of the shell was closed by a cap. It was found thatin this manner the density of the electrode as a whole was rather low. and the electrodes were consumed at a comparatively high rate. Thiswas afterwards overcome by proceeding as hereinbefore indicated and then swaging the electrode or drawing the same through dies of ever decreasing diameters. whereby the electrode material was greatly compacted until it became practically as hard as a rock. In this manner more electrode material. was condensed in electrodes of the same diameter and length than was possible by the simple bumping process. But the defect of this improved process was that by the sw'aging or drawing process the resulting electrode was generally longer than required or permitted in commercial arc-lamps, and these superfluous extensions had to be cut off and the material which they contained was in a large measure lost. In addition thereto, by the swaging or drawing process, the shell became verythin, and thus detracted from the conductivity of the electrode as a whole.
My invention is designed to.and does overcome the defects of the old process of swaging or drawing, by so compressing the bumped electrode to a smaller cross-section that its length is not altered and the shell or casing is not reduced in thickness. In
Specification of Letters Patent. Patented Feb. 14,
Serial No. 452,904.
I this manner, none of the original electrode one of the electrodes finished and two others in course of undergoing the process; and Fig. 4 is a perspective view of thefinished product.
Referring to the drawing, the cylindrica-l shell 10 of the electrode blank is shown in Fig. 1 as filled with the electrode material 11, which is moderately compacted therein by bumping. One end of theshell is reduced in diameter as indicated at 12 by any desired process, and this neck of the electrode which is designed to be received in a holder in the lamp, is closed by a. thimble 13 before the electrode material is filled in, andthe wide open end of the shell is then closed by a cap 14. The electrode, so far described, is of the old type and which for the purposes of my invention is used as a blank.
.The press used inmy process consists of a heavy base 15 and a follower 16, the base being formed with a mold cavity 17 which has the length of the blank, but is provided at each end with a limit stop (not indicated in the drawing) so that the open cavity in the base block has just the length of the electrode blank, whereby the latter, in the subsequent step of the process, can only be compressed in cross section, but cannot be elongated. The die channel or mold cavity is here shown rectangular in form, and it is narrower than the diameter of the electrode blank, so that the latter, in its original cylindrical form, could not be entered into the die cavity. With this equipment, the improved process is as follows:
Upon the upper surface of the base block are placed two electrode blanks in their original cylindrical form, as indicated in Fig. 2, and the follower is then forced down until its side branches 16 press upon the blanks and partly flatten them, as indicated in Fig. 3. Vhen the process is thus primarily started the die cavity would ordinarily be empty, since the diameter of the cylindrical blank is too large to be placed in the cavity. 'After one or more flattened blanks have thus been made, one of them is placed in the mold and two cylindrical blanks are put in place as shown in Fig. 2. If now the follower is forced down, as shown in Fig. 3, the flattened blank in the mold is powerfully compressed to a smaller cross-section and is given the shape of the mold without'lengthening the electrode. the same time two of the original cylindrical blanks are flattened, so that they or one of them may be inserted in the mold to be acted upon by the follower at its next stroke. The final form of the electrode is shown in Fig. 4. It is rectangular in cross-section and may be square. It is, however, clear that the final cross-section of the electrode may be different; it may be polygonal or have any desired form if the mold cavity and the follower are suitably formed. The finished electrode is discharged from the mold in any suitable manner as, for instance, by one or more, expelling rods 18, indicated in Figs. 2 and 3.
What I claim, as new and desire to secure by Letters Patent of the United States is 1. The process of making a dense arclight electrode'which consists in filling a metallic shell with the powder of the electrode material and then compressing the filled shell to a smaller cross-section without elongating the same 2-. The process of making a dense arclight electrode which consists in filling a substantially cylindrical metallic shell with powdered electrode material and then compressing the filled shell to a smaller, angular cross-section without elongating the same.
in witness whereof, I have hereunto set my hand this 14th day of March, 1921.
IRVING S. CROCKER.
Publications (1)
Publication Number | Publication Date |
---|---|
US1406542A true US1406542A (en) | 1922-02-14 |
Family
ID=3400775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1406542D Expired - Lifetime US1406542A (en) | Electjeiode |
Country Status (1)
Country | Link |
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US (1) | US1406542A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2708288A (en) * | 1950-05-26 | 1955-05-17 | Frank W Fuller | Method and apparatus for molding plastic |
US2872402A (en) * | 1947-03-31 | 1959-02-03 | Chester L Ura | Method of preparation of material for neutron bombardment |
US2885287A (en) * | 1954-07-14 | 1959-05-05 | Harold F Larson | Method of forming elongated compacts |
US3084397A (en) * | 1959-06-04 | 1963-04-09 | Philips Corp | Method of manufacturing layers consisting of chalcogenides |
US3100677A (en) * | 1959-07-24 | 1963-08-13 | A P Green Fire Brick Company | Method of making refractory brick |
US3328146A (en) * | 1962-07-21 | 1967-06-27 | Siemens Ag | Method of producing an analyzer electrode system for mass spectrometers |
US3474518A (en) * | 1966-02-15 | 1969-10-28 | Olof Strandell | Strip welding electrode and a method for making the same |
US3644970A (en) * | 1967-04-28 | 1972-02-29 | Tokyo Shibaura Electric Co | Method of manufacturing an anode member for an x-ray tube |
-
0
- US US1406542D patent/US1406542A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2872402A (en) * | 1947-03-31 | 1959-02-03 | Chester L Ura | Method of preparation of material for neutron bombardment |
US2708288A (en) * | 1950-05-26 | 1955-05-17 | Frank W Fuller | Method and apparatus for molding plastic |
US2885287A (en) * | 1954-07-14 | 1959-05-05 | Harold F Larson | Method of forming elongated compacts |
US3084397A (en) * | 1959-06-04 | 1963-04-09 | Philips Corp | Method of manufacturing layers consisting of chalcogenides |
US3100677A (en) * | 1959-07-24 | 1963-08-13 | A P Green Fire Brick Company | Method of making refractory brick |
US3328146A (en) * | 1962-07-21 | 1967-06-27 | Siemens Ag | Method of producing an analyzer electrode system for mass spectrometers |
US3474518A (en) * | 1966-02-15 | 1969-10-28 | Olof Strandell | Strip welding electrode and a method for making the same |
US3644970A (en) * | 1967-04-28 | 1972-02-29 | Tokyo Shibaura Electric Co | Method of manufacturing an anode member for an x-ray tube |
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