US1604216A - Method of making spinnerets - Google Patents

Method of making spinnerets Download PDF

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Publication number
US1604216A
US1604216A US20032A US2003225A US1604216A US 1604216 A US1604216 A US 1604216A US 20032 A US20032 A US 20032A US 2003225 A US2003225 A US 2003225A US 1604216 A US1604216 A US 1604216A
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United States
Prior art keywords
spinnerets
blank
coating
burr
making
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Expired - Lifetime
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US20032A
Inventor
Clement S Brainin
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Individual
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Priority to US20032A priority Critical patent/US1604216A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/16Making specific metal objects by operations not covered by a single other subclass or a group in this subclass plates with holes of very small diameter, e.g. for spinning or burner nozzles
    • 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
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/4981Utilizing transitory attached element or associated separate material
    • Y10T29/49812Temporary protective coating, impregnation, or cast layer

Definitions

  • Figure 1 is a top plan View of a spinueret made in accordance with this invention.
  • Fig. 2 is a cross-sectional view of the blank from which this spinneret is made
  • Figs. 3 and 4 are views of the blank after undergoing steps of the process.
  • Fig. 5 is a similar view of the completed spinneret.
  • the blank or article is coated upon each side with some metal suiiiciently resistant itself to n'event the :lormation of a burr in the metal of the blank. and thereafter it is dissolved or otherwise removed from the blank together with any burr which may be formed from its own metal to leave the blank itself free from burr.
  • a convenient method of accomplishing this result has been found to be to plate the blank inside and out with a coating of copper or other suitable material, which may be readily deposited upon it electrolytically, which is capable of giving sufiicient support to the material at the hole, but which is capable of being readily removed by the application of acid.
  • the numeral 1 constitutes a blank which maybe of general cup shape formation having flanges 2 for support and having a face 3.
  • This blank is ordinarily made of platinum, or of platinum alloyed with gold.
  • This blank may be readily plated inside and outside with copper as shown at 4 in any. suitable bath.
  • nozzle orifices 5 may be drilled through the face 3. This'drilling will ordinarily produce a burr where the drill enters the copper as well as where it leaves. This burr, however, will be in the coating itself and composed of the material thereof.
  • burr may be completely removed from the article by submerging the cup in an acid bath, such for example, as nitric acid, leaving the cup with its openings clean on both inside and out, without being Worked further.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

@mta 26 9 W26 c. s. RAININ METHOD OF MAKING SPINNERETS Filed April 2, 1925 ATT ORNFZYS Patented Oct. 26, 1926.
UNITED STATES 1,604,216 PATENT OFFICE.
CLEMIE 2 NT S. BRAININ, 0F GLEN RIDGE, NEW JERSEY.
METHOD OF MAKING SPINNERETS.
Application filed April 2, 1925.
several steps and the relation and order of one or more of such steps with respect to each of the others thereof, which will be exemplified in the method hereinafter disclosed, and the scope of the application of which will be indicated in the claims.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which:
Figure 1 is a top plan View of a spinueret made in accordance with this invention;
Fig. 2 is a cross-sectional view of the blank from which this spinneret is made;
Figs. 3 and 4 are views of the blank after undergoing steps of the process; and
Fig. 5 is a similar view of the completed spinneret.
It is necessary i 11 the manufacture of many small. articles, such for example as the spinnerets with which artificial silk is made, to drill exceedingly fine holes through metallic members and to leave the article without a burr on either side. To accomplish this result, it has heretofore been customary after drilling the holes through the articles, to carefully polish both faces to remove the burr which resulted from the drilling and subsequently to remove the burr resulting from the polishing, continuing this process until the holes are completely cleaned. This is a process requiring great care by reason of the facts that the holes may be of small diameter, as for example, the holes in spinnerets may vary between .008 and .006 in. in diameter.
In accordance with this invention, the blank or article is coated upon each side with some metal suiiiciently resistant itself to n'event the :lormation of a burr in the metal of the blank. and thereafter it is dissolved or otherwise removed from the blank together with any burr which may be formed from its own metal to leave the blank itself free from burr.
Serial No. 20,032.
A convenient method of accomplishing this result has been found to be to plate the blank inside and out with a coating of copper or other suitable material, which may be readily deposited upon it electrolytically, which is capable of giving sufiicient support to the material at the hole, but which is capable of being readily removed by the application of acid.
In the drawings, the numeral 1 constitutes a blank which maybe of general cup shape formation having flanges 2 for support and having a face 3. This blank is ordinarily made of platinum, or of platinum alloyed with gold. This blank may be readily plated inside and outside with copper as shown at 4 in any. suitable bath. Thereupon nozzle orifices 5 may be drilled through the face 3. This'drilling will ordinarily produce a burr where the drill enters the copper as well as where it leaves. This burr, however, will be in the coating itself and composed of the material thereof. There will be no burr at'the point where the drill leaves the copper to enter the platinum or at the point where the drill leaves the platinum to enter the copper, because the copper furnishes sufficient support to the drill and to the platinum to prevent such formation. By reason of that fact, the burr may be completely removed from the article by submerging the cup in an acid bath, such for example, as nitric acid, leaving the cup with its openings clean on both inside and out, without being Worked further.
Since certain changes may be made in carrying out the above method without departing from the scope of the invention, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.
It is also to'be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.
Having described my invention, what I claim as new and desire to secure by Letters Patent, is:
1. The process of perforating a metal sheet, which comprises applying a supporting coat to the sheet and drilling-through the sheet and coating, and then removing the coating.
2. The process of perforating a metal sheet, which comprises applying a supporting coating on both surfaces thereof, drilling through the sheet and coating and then removing the coating.
3. The process of perforating, a metal sheet, which comprises depositing a metallic coating upon the surface thereof, perforating the sheet and coating and subse- 30 quently removingthe coating 4. The process of perforating" a metal sheet, which comprises electroplating the said sheet with copper, drilling through the sheet and copper and then removing the copper.
5. The process of making spinnerets, Which comprises electro-plating a spinneret blank, drilling through the same, and then removing the coating.
In testimony whereof I aflix my signature.
CLEMENT s. BRAININ.
US20032A 1925-04-02 1925-04-02 Method of making spinnerets Expired - Lifetime US1604216A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820374A (en) * 1949-11-23 1958-01-21 American Enka Corp Process for making spinnerets for melt spinning
US2879676A (en) * 1952-03-01 1959-03-31 Heraeus Gmbh W C Manufacture of spinning nozzles
US2923969A (en) * 1960-02-09 Certificate of correction
US2932084A (en) * 1955-05-18 1960-04-12 American Viscose Corp Method of making spinnerets
US2947028A (en) * 1954-11-19 1960-08-02 Owens Corning Fiberglass Corp Apparatus for manufacture of fibrous glass
US3044160A (en) * 1958-03-03 1962-07-17 Battelle Development Corp Method of producing ribbed metal sandwich structures
US3063142A (en) * 1959-03-06 1962-11-13 Pieter J Kroon Method of making tubing structures
US3075241A (en) * 1955-03-08 1963-01-29 Schiesser Ag Trikotfabriken Multiple hole spinning nozzle and process of manufacture
US3130487A (en) * 1962-12-17 1964-04-28 Norman B Mears Method of making fine mesh dome-shaped grids
US3187607A (en) * 1962-07-24 1965-06-08 Du Pont Spinneret production

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923969A (en) * 1960-02-09 Certificate of correction
US2820374A (en) * 1949-11-23 1958-01-21 American Enka Corp Process for making spinnerets for melt spinning
US2839783A (en) * 1949-11-23 1958-06-24 American Enka Corp Spinnerets for melt-spinning high polymeric substances
US2879676A (en) * 1952-03-01 1959-03-31 Heraeus Gmbh W C Manufacture of spinning nozzles
US2947028A (en) * 1954-11-19 1960-08-02 Owens Corning Fiberglass Corp Apparatus for manufacture of fibrous glass
US3075241A (en) * 1955-03-08 1963-01-29 Schiesser Ag Trikotfabriken Multiple hole spinning nozzle and process of manufacture
US2932084A (en) * 1955-05-18 1960-04-12 American Viscose Corp Method of making spinnerets
US3056163A (en) * 1955-05-18 1962-10-02 American Viscose Corp Spinneret
US3044160A (en) * 1958-03-03 1962-07-17 Battelle Development Corp Method of producing ribbed metal sandwich structures
US3063142A (en) * 1959-03-06 1962-11-13 Pieter J Kroon Method of making tubing structures
US3187607A (en) * 1962-07-24 1965-06-08 Du Pont Spinneret production
US3130487A (en) * 1962-12-17 1964-04-28 Norman B Mears Method of making fine mesh dome-shaped grids

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