US1655466A - Method and apparatus for treating filaments - Google Patents

Method and apparatus for treating filaments Download PDF

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Publication number
US1655466A
US1655466A US114808A US11480826A US1655466A US 1655466 A US1655466 A US 1655466A US 114808 A US114808 A US 114808A US 11480826 A US11480826 A US 11480826A US 1655466 A US1655466 A US 1655466A
Authority
US
United States
Prior art keywords
filaments
getter
blast
nozzle
supported
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
Application number
US114808A
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English (en)
Inventor
George E Inman
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority to BE342791D priority Critical patent/BE342791A/fr
Application filed by General Electric Co filed Critical General Electric Co
Priority to US114808A priority patent/US1655466A/en
Priority to DEP53858D priority patent/DE452708C/de
Priority to FR639785D priority patent/FR639785A/fr
Priority to GB15121/27A priority patent/GB272500A/en
Application granted granted Critical
Publication of US1655466A publication Critical patent/US1655466A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering

Definitions

  • My invention relates to -methods and apparatus for coating incandescent lamp filaments and other articles of like proportions. More particularly, my invention relates to methods and apparatus for applying the socalled getter to coiled metal filaments. Getters are materials, usually non-metallic. which are used inincandescent lamps and similar devices in some cases for improving the, vacuum and for preventing discoloration of the bulb. It is desirable that this material be applied uniformly, and this is a more difiicult operation in the 4case of coiled filaments than in that of straight filaments.
  • the present invention is an im? provement on that disclosed in my co-pending application, Serial No. 107,883, filed May 10, 1926.
  • the specific method disclosed in that application consists in spraying getter material upon the filaments which are held in a recepta le and simultaneously causing a whirling movement of the filaments in the receptacle.
  • the filaments are supported in a receptacle connected to the bottom of which is a pipe through which air pressure is directed and means are provided whereby the getter is incorporated with the blast so that the blast accomplishes a double purpose of gettering and stirring up the filaments.
  • Fig. 1 is an elevation partially in section of an apparatus embod ing my invention
  • Fig. 2 is an enlarged ragmentary vertical section through the spray nozzle
  • Fig. 3 is a top plan view of the spray nozzle
  • Fig. 4 shows a portion of a filament coil on an enlarged scale.
  • the inverted cone or funnel is of brass or other metal which will not be affected by the getter material and contains a number of the filament coils 11.
  • the said funnel is removably supported by an arm 12 which has projecting therefroma stop pin 13 and is held by the socket bracket 14.
  • a spring 15 surrounds the end of the arm 12 within the socket, said arm being provided with a pin 16 engaging the end of the spring.
  • the arrangement l is such that the arm 12 may be pulled out from the, socket but is 'normally retracted by the spring 15 with the pin 13 resting in the notch in the socket end.
  • the bracket 14 is supported on a stand ard 17 carried by the base 18.
  • the getter container or graduatev 19 is supported on an adjustable bracket 20 carried by the standard 17.
  • This container is adapted to receive a quantity of the getter material comprising finely divided chemicals such as cryolite in suspension in a volatile liquid carrier.
  • a quantity of the getter material comprising finely divided chemicals such as cryolite in suspension in a volatile liquid carrier.
  • One mixture which has been'found to be suitable was made by adding two hundred ams of cryolite linely divided to one hun red and fifty grams of lacquer containing amyl acetate and then diluting by adding to one part of the cryolite lacquer mixture four parts by volume of a mixture of 80% methyl alcohol and 20% ether.
  • a nozzle tube 21 extends vertically upward from a point near the battom of the graduate 19 and the upper end thereof is screwed into a nozzle 22, the latter having a 'flange 23 which is held in aseat inthe bottom of the nozzle adjusting.
  • a needle 32 extends up through the center of the nozzle members 21 and 22, and its point is disposed in the -constricted ,end of the member 22. The said needle is bent so that its opposite end is held by one jaw of a control member 33 (Fig.
  • An injector tube 34 is provided extending to the bottom of the graduate 19 and with its other end in a suitable position so that air may be injected to stir up the getter mixture. Over the top of blown and simultaneously coated.
  • the tunnel l is disposed the i'ilament coating; chamber up into which the filaments are fis specifically shown in the drawing, this chamber is walled by a cylinder 35, preferably ot glass, which is supported by the standard 17 a strap 36 surrounding the same being removably and adjustably supported on a bracket 3? which is pivoted on the standard l?.
  • the arrangement is such that the cylinder can be raised trom the tunnel l0 and swung out of line therewith until a pin 38 carried by the bracket 3'? engages a stationary rest supported trom the aforesaid standard.
  • i quick stoppage ot the lettering action can be made by the operator by means ot the control 33 after which the blast may be turned oft.
  • fhetop is then swung oil ol: the tunnel and the bracket 2O swungr trout under the graduate i9 by the opera-tor who then removes the graduate.
  • rl ⁇ he filaments may then he dumped from the tunnel i0 by pulling out the arm l2 against the action ot tne spring 15 so that the pin 13 clears the notch and then inverting' the tunnel.
  • the method ot coating filaments which consists in projecting a number thereof in an upward direction into a confined space, by a blast containing the coating material.
  • An ,apparatus comprising a substantially vertically disposed chamber having communicating with the bottom thereof means tor supporting a number of filament-s, means Jfor causinga blast to be directed iiito the bottom of said chamber, and means for incorporating coating material in said blast.

Landscapes

  • Nozzles (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
US114808A 1926-05-10 1926-06-09 Method and apparatus for treating filaments Expired - Lifetime US1655466A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE342791D BE342791A (en:Method) 1926-05-10
US114808A US1655466A (en) 1926-06-09 1926-06-09 Method and apparatus for treating filaments
DEP53858D DE452708C (de) 1926-06-09 1926-10-20 Verfahren und Vorrichtung zum Anbringen eines nichtmetallischen UEberzugs auf duennen kurzen oder Drahtkoerpern, insbesondere auf kleinen Wendelleuchtkoerpern elektrischer Gluehlampen
FR639785D FR639785A (fr) 1926-06-09 1927-06-04 Perfectionnements aux méthodes et appareils pour le traitement des filaments
GB15121/27A GB272500A (en) 1926-06-09 1927-06-07 Improvements in and relating to methods of and apparatus for treating filaments for electric incandescent lamps or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US114808A US1655466A (en) 1926-06-09 1926-06-09 Method and apparatus for treating filaments

Publications (1)

Publication Number Publication Date
US1655466A true US1655466A (en) 1928-01-10

Family

ID=22357547

Family Applications (1)

Application Number Title Priority Date Filing Date
US114808A Expired - Lifetime US1655466A (en) 1926-05-10 1926-06-09 Method and apparatus for treating filaments

Country Status (5)

Country Link
US (1) US1655466A (en:Method)
BE (1) BE342791A (en:Method)
DE (1) DE452708C (en:Method)
FR (1) FR639785A (en:Method)
GB (1) GB272500A (en:Method)

Also Published As

Publication number Publication date
GB272500A (en) 1927-08-04
FR639785A (fr) 1928-06-29
BE342791A (en:Method)
DE452708C (de) 1927-11-17

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