US2698257A - Method and device for providing electric lamp bulbs with an inner layer of very small light diffusing particles - Google Patents

Method and device for providing electric lamp bulbs with an inner layer of very small light diffusing particles Download PDF

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Publication number
US2698257A
US2698257A US210300A US21030051A US2698257A US 2698257 A US2698257 A US 2698257A US 210300 A US210300 A US 210300A US 21030051 A US21030051 A US 21030051A US 2698257 A US2698257 A US 2698257A
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US
United States
Prior art keywords
bulb
bulbs
particles
inner layer
burners
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
US210300A
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English (en)
Inventor
Kronouer Johan George
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.)
Hartford National Bank and Trust Co
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Hartford National Bank and Trust 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
Application filed by Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
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Publication of US2698257A publication Critical patent/US2698257A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

Definitions

  • This invention relates to a method of and a device for providing electric lamp bulbs with an inner layer of very small light-diffusing particles.
  • the object of the invention is inter alia to obviate this disadvantage.
  • a series of devices for producing smoke, over which a series of bulbs are led in a step-wise manner such that the layer formed in each bulb is built up by a plurality of devices.
  • Irregularities of one burner thus do not become manifest in the final product. It is not necessary to keep all burners operative simultaneously, and more particularly in the case of a large series of burners it is possible to put one or more out of use for cleaning or repairs.
  • the device according to the invention is constituted by a series of devices (burners) for producing smoke and a transport device for displacing the bulbs, which transport device is adapted to move the bulbs in a step-wise manner over the burners.
  • the reference numeral 1 indicates a number of burners for producing a smoke of small particles.
  • An organic silicon compound for example ethyl silicate, which oxygen is burnt in the burners.
  • the construction of such burners is known per se.
  • the burners are in this case supplied through two conduits 2 and 3.
  • a table 4 having a series of apertures 5, there being an aperture above each burner.
  • a transport device Arranged above the bulbs is a transport device which is shown diagrammatically by a straight tube 8 having a number of branches 9 each of which carries a suction member 10,
  • the transport device is moved on by a driving mechanism (not shown).
  • the movement of an arbitrary part of the transport device is shown diagrammatically in Fig. 2 on a larger scale than in Fig. 1.
  • Point P shows the position which the device occupies in the position shown in Fig. 1.
  • the tube 8 is evacuated, with the result that the suction members take hold of the bulbs. Subsequently, the device moves upwards to point Q so that the necks 6 are lifted till above the table 4. Subsequently, the device moves to the right to point R and then downwards to point S, which lies slightly higher than point P. Here, the vacuum in the tube 8 is released and the bulbs are released each above a subsequent burner.
  • the transport device the suction members of which are now at a small distance freely above the bulbs, is subsequently moved back to point T, which lies above point P. Subsequently, the device drops through the distance TP, and herewith one cycle is performed and a subsequent one may begin.
  • Transport devices operating in such a manner are known per se.
  • the protective rights claimed here relate solely to their combination with a series of devices for producing smoke.
  • the transport device may be constructed in different ways. It is, for example, also possible to use only the table 4 for supporting the bulbs and to move the bulbs alternately up and down and in the forward direction. Contrary to the example in which the burners are arranged in a straight row, they may alternatively be positioned in the form of a circle.
  • a method of providing electric lamp bulbs with an inner layer of very small light-diffusing particles comprising the steps of successively placing the bulb in a plurality of spaced positions and burning a compound producing smoke of such particles in an oxygen atmosphere in each position so that the layer formed in each bulb is step-wise built up by the amount of particles deposited on the bulb in each successive position, the placing of said bulb in each position being accomplished by first evacuating the tube, then using the suction produced to move the bulb to the next position, and finally releasing the vacuum produced.
  • a method of providing electric lamp bulbs with an inner layer of very small light-diffusing particles comprising the steps of successively placing the bulb in a plurality of spaced positions and burning an organic silicon compound in an oxygen atmosphere in each position so that the layer formed in each bulb is step-wise built up by the amount of particles deposited on the bulb in each successive position, the placing of said bulb in each position being accomplished by first evacuating the tube, then using the suction produced to move the bulb to the next position, and finally releasing the vacuum produced.
  • a method of providing electric lamp bulbs with an inner layer of very small light-diffusing particles comprising the steps of successively placing the bulb in a plurality of spaced positions and burning an organic silicon compound in an oxygen atmosphere in each position so that the layer formed in each bulb is stepwise built up by the amount of particles deposited on the bulb in each successive position, the placing of said bulb in each position being accomplished by first evacuating the tube, then using the suction produced to move the bulb to the next position, and finally releasing the vacuum produced.
  • a device for coating electric bulbs with an inner layer of very small light-diffusing particles comprising a plurality of burners producing smoke of such particles, each burner being spaced a fixed distance from each other, an evacuator connected to each of said burners, a table above said burners having a series of apertures therein, each aperture being positioned above each burner, and a transport member above said table, said transport member having a number of arms carrying Suction'members, each of said suction members being adapted to engage a bulb when said evacuator exhausts the bulbs whereby the transport member moves the bulbs from one aperture of said table to the next successive aperture whereby the'smoke-from teach burnerzproduces axtplurality of light diffusing .particles which" ,are deposited in superposed layers .on the'inner surface .of said bulbs thereby making coatings .for said bulbs'twhich are substantially uniform.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Surface Treatment Of Glass (AREA)
US210300A 1950-03-15 1951-02-10 Method and device for providing electric lamp bulbs with an inner layer of very small light diffusing particles Expired - Lifetime US2698257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL289532X 1950-03-15

Publications (1)

Publication Number Publication Date
US2698257A true US2698257A (en) 1954-12-28

Family

ID=19782678

Family Applications (1)

Application Number Title Priority Date Filing Date
US210300A Expired - Lifetime US2698257A (en) 1950-03-15 1951-02-10 Method and device for providing electric lamp bulbs with an inner layer of very small light diffusing particles

Country Status (7)

Country Link
US (1) US2698257A (xx)
BE (1) BE501846A (xx)
CH (1) CH289532A (xx)
DE (1) DE851092C (xx)
FR (1) FR1033920A (xx)
GB (1) GB697638A (xx)
NL (1) NL78892C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967113A (en) * 1957-11-18 1961-01-03 Gen Electric Coating method
US3074817A (en) * 1957-04-26 1963-01-22 Int Resistance Co Pyrolytically decomposed resistor consisting of the elements carbon, oxygen and silicon

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046360A (en) * 1934-11-16 1936-07-07 Westinghouse Lamp Co Bulb coating machine
US2160714A (en) * 1932-07-20 1939-05-30 Hygrade Sylvania Corp Apparatus for interiorly coating lamps, tubes, and the like
US2164332A (en) * 1937-08-18 1939-07-04 Birdseye Electric Company Apparatus for applying mirror surfaces to the interior of lamp bulbs
US2356136A (en) * 1941-07-05 1944-08-22 Libbey Owens Ford Glass Co Apparatus for handling mirrors during processing
US2545896A (en) * 1947-02-15 1951-03-20 Gen Electric Electric lamp, light diffusing coating therefor and method of manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160714A (en) * 1932-07-20 1939-05-30 Hygrade Sylvania Corp Apparatus for interiorly coating lamps, tubes, and the like
US2046360A (en) * 1934-11-16 1936-07-07 Westinghouse Lamp Co Bulb coating machine
US2164332A (en) * 1937-08-18 1939-07-04 Birdseye Electric Company Apparatus for applying mirror surfaces to the interior of lamp bulbs
US2356136A (en) * 1941-07-05 1944-08-22 Libbey Owens Ford Glass Co Apparatus for handling mirrors during processing
US2545896A (en) * 1947-02-15 1951-03-20 Gen Electric Electric lamp, light diffusing coating therefor and method of manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074817A (en) * 1957-04-26 1963-01-22 Int Resistance Co Pyrolytically decomposed resistor consisting of the elements carbon, oxygen and silicon
US2967113A (en) * 1957-11-18 1961-01-03 Gen Electric Coating method

Also Published As

Publication number Publication date
NL78892C (xx)
GB697638A (en) 1953-09-23
DE851092C (de) 1952-10-02
BE501846A (xx)
CH289532A (de) 1953-03-15
FR1033920A (fr) 1953-07-16

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