US3286323A - Lead threading device for lamp basing apparatus - Google Patents

Lead threading device for lamp basing apparatus Download PDF

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US3286323A
US3286323A US214284A US21428462A US3286323A US 3286323 A US3286323 A US 3286323A US 214284 A US214284 A US 214284A US 21428462 A US21428462 A US 21428462A US 3286323 A US3286323 A US 3286323A
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leads
current supply
lamp
pliers
guide pins
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Expired - Lifetime
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US214284A
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Bastiaanse Ernst
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/28—Manufacture of leading-in conductors
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/53261—Means to align and advance work part

Definitions

  • the invention relates to a method of threading one or more current supply leads of an electric filament lamp or discharge tube through one or more associated apertures in a cap for the said lamp or tube with the aid of guidepins in which method the cap is placed on the guide pins, the current supply leads are inserted into the guide pins and subsequently the cap is slipped over the neck of the lamp or tube over the leads which are aligned by the guide pins.
  • Such a method is known.
  • each current supply lead is brought, with the aid of a funnel-shaped member, substantially into the longitudinal axis of the funnel and then is axially passed through the funnel.
  • the leads are aligned in the funnel and, when threaded through the funnel are disposed in the guide pins which register with the part of the funnel having the smallest diameter.
  • the use of a funnel-shaped member for centering the leads may have disadvantages, particularly when the leads protruding from the lamp or tube have small diameters.
  • the funnel must necessarily be split so that under certain circumstances the wires may find their way between the faces of the funnel parts and cannot readily be inserted into the guide pins.
  • the method in accordance with the invention is characterized in that the leads are inserted into the guide pins by bringing the leads and the guide pins closely together, centering the free facing ends of the leads and the guide pins with respect to one another and subsequently slipping the guide pins axially on the ends of the associated leads.
  • the leads are preferably centered with respect to the guide pins after they have been brought closely together. After the centering process the guide pins are slipped on the free ends of the leads.
  • the ends of the current supply leads are cut to the required length before the leads and the guide pins are brought closely together. This enables the leads and the guide pins to be brought closely together before they are centered with respect to one another.
  • An apparatus for carrying out the method in accordance with the invention which is provided with a holder for a lamp or tube, with a second holder for a cap, which second holder is displaceable with respect to the first holder, and with at least one guiding pin which is displaceable with respect to the two holders, is characterized in that it is provided with one pair of pliers for centering the facing free ends of the leads and the guide pins with respect to one another after they have been brought closely together.
  • the pliers thereafter when closed centers the guide pins with respect to the leads so as to be axially displaceable.
  • the pliers are adapted to align and to center the leads at least at two points.
  • Such a pair of pliers enables the free ends of the leads to be centered so that the longitudinal axis of the free end of a lead when centered substantially coincides with the longitudinal axis of the associated guide pin.
  • the centering point of each lead nearer or nearest the free end thereof is preferably spaced from the said free end by a distance of about 1 mm.
  • the guide pins are made of solid material, each guide pin being provided in its end face facing the leads of the lamp or tube with a cavity of slight depth.
  • FIGS. 1, 2, 3 and 4 show successive stages of the method in accordance with the invention.
  • FIGS. 5 and 6 are a plan view and a sectional view taken along the line VIVI of FIG. 5 respectively of the construction of a pair of pliers for common centering of the current supply leads projecting from a filament lamp and of the guide pins after they have been brought closely together.
  • An evacuated and sealed electric filament lamp 1 shown in FIGS. 1 to 4 has two thin flexible current supply leads 3 and 4.
  • a cap 2 having apertures 5 and 6 in its bottom is to be mounted on the lamp. For the sake of clarity the leads and the apertures are shown with exaggerated width.
  • guide pins 11 and 12 may be used which are displaceable with respect to the lamp 1. These guide pins are displaced from an initial position shown in FIG. 1 to the position shown in FIG. 2 in which they are in close proximity to the leads 3 and 4 which have preivously been cut to the desired length.
  • a pair of pliers 15 shown diagrammatically is then closed about the facing free ends of the leads 3 and 4 and of the guide pins 11 and 12 (FIG. 3). These pliers align and center the leads 3 and 4 according to arrows 16 and 17. Simultaneously the free ends of the guide pins 11 and 12 are aligned and centered according to arrows 18 by the same pliers.
  • the pliers 15 have the shape shown in FIGS. 5 and 6. They comprise two parts 22 and 23 adapted to pivot about spindles 20 and 21.
  • the part 22 comprises parts 43 and 44 connected together by bolts 42.
  • the part 43 is provided with two crenate flanges 24 and 25.
  • the part 44 is provided with a crenate flange 26.
  • the part 44 has a non-crenate part 27 adjacent the flange 26.
  • the said part 27 has a straight edge indicated by 46 in FIG. 5.
  • the part 23 has flanges 28, 40 and 29 connected together by bolts 49 and each provided with a straight edge 30, 41 and 31 respectively.
  • the edge 46 of the part 44 acts as a stop abutment for the edge 31 of the flange 29.
  • the plier parts 22 and 23 are adapted to pivot towards each other through an angle defined by the abutment edge 46.
  • the arrangement further is such that when the pliers 22, 23 are closed the guide pins 11 and 12 are accommodated between the flanks 47 and 48 and the edge 31 of the flange 29 engaging the abutment stop 46 but are not clamped thereby. Hence they are centered while being displaceable.
  • the wires 3 and 4 are accommodated between the edges 30, 41 of the flanges 28, 40 and the flanks 33, 34 of the part 43 but are not clamped thereby.
  • a device for threading at least one current supply lead of a lamp through an associated aperture in a cap to be mounted on the lamp neck comprising a holder for said cap having at least one guide pin therein adapted to pass through said aperture, said holder being displaceable in the direction of the current supply lead, a pair of pliers for axially aligning the facing free ends of the current supply lead and guide pin when the same have been located close to each other, means for axially displacing said guide pin in said pliers relative to said current supply in claim 1 wherein said pliers when closed aligns and centers the lead and guide pin along a line extending in the direction of the length of said lead and guide pin.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Description

Nov. 22, 1966 E. BASTIAANSE LEAD THREADING DEVICE FOR LAMP BASING APPARATUS Filed Aug. 2, 1962 INVENTOR ERNST BASTIAANSE AGEN United States Patent 3,286,323 LEAD THREADING DEVICE FOR LAMP BASING APPARATUS Ernst Bastiaanse, Emmasingel, Eindhoven, Netherlands,
assignor to North American Philips Company, Inc., New York, N.Y., a corporation of Delaware Filed Aug. 2, 1962, Ser. No. 214,284
Claims priority, applicatgzn lgletherlands, Aug. 28, 1961,
3 Claims. (31. 29-2519 The invention relates to a method of threading one or more current supply leads of an electric filament lamp or discharge tube through one or more associated apertures in a cap for the said lamp or tube with the aid of guidepins in which method the cap is placed on the guide pins, the current supply leads are inserted into the guide pins and subsequently the cap is slipped over the neck of the lamp or tube over the leads which are aligned by the guide pins. Such a method is known.
In another known method the end of each current supply lead is brought, with the aid of a funnel-shaped member, substantially into the longitudinal axis of the funnel and then is axially passed through the funnel. Thus the leads are aligned in the funnel and, when threaded through the funnel are disposed in the guide pins which register with the part of the funnel having the smallest diameter.
The use of a funnel-shaped member for centering the leads may have disadvantages, particularly when the leads protruding from the lamp or tube have small diameters. The funnel must necessarily be split so that under certain circumstances the wires may find their way between the faces of the funnel parts and cannot readily be inserted into the guide pins.
It is the object of the present invention to provide a method in which aligning and centering of the wires and the guide pins is simplified and the above-mentioned difficulty is overcome.
The method in accordance with the invention is characterized in that the leads are inserted into the guide pins by bringing the leads and the guide pins closely together, centering the free facing ends of the leads and the guide pins with respect to one another and subsequently slipping the guide pins axially on the ends of the associated leads. In this method the leads are preferably centered with respect to the guide pins after they have been brought closely together. After the centering process the guide pins are slipped on the free ends of the leads.
According to a further embodiment of the method in accordance with the invention the ends of the current supply leads are cut to the required length before the leads and the guide pins are brought closely together. This enables the leads and the guide pins to be brought closely together before they are centered with respect to one another.
An apparatus for carrying out the method in accordance with the invention which is provided with a holder for a lamp or tube, with a second holder for a cap, which second holder is displaceable with respect to the first holder, and with at least one guiding pin which is displaceable with respect to the two holders, is characterized in that it is provided with one pair of pliers for centering the facing free ends of the leads and the guide pins with respect to one another after they have been brought closely together. The pliers thereafter when closed centers the guide pins with respect to the leads so as to be axially displaceable. In a particular embodiment the pliers are adapted to align and to center the leads at least at two points. Such a pair of pliers enables the free ends of the leads to be centered so that the longitudinal axis of the free end of a lead when centered substantially coincides with the longitudinal axis of the associated guide pin. The centering point of each lead nearer or nearest the free end thereof is preferably spaced from the said free end by a distance of about 1 mm.
According to a final embodiment of the apparatus in accordance with the invention the guide pins are made of solid material, each guide pin being provided in its end face facing the leads of the lamp or tube with a cavity of slight depth.
In order that the invention may readily be carried into effect, an embodiment thereof will now be described, by way of example, with reference to the accompanying diagrammatic drawings, in which:
FIGS. 1, 2, 3 and 4 show successive stages of the method in accordance with the invention, and
FIGS. 5 and 6 are a plan view and a sectional view taken along the line VIVI of FIG. 5 respectively of the construction of a pair of pliers for common centering of the current supply leads projecting from a filament lamp and of the guide pins after they have been brought closely together.
An evacuated and sealed electric filament lamp 1 shown in FIGS. 1 to 4 has two thin flexible current supply leads 3 and 4. A cap 2 having apertures 5 and 6 in its bottom is to be mounted on the lamp. For the sake of clarity the leads and the apertures are shown with exaggerated width.
To thread the flexible current supply leads 3 and 4 through the cap 2 known guide pins 11 and 12 may be used which are displaceable with respect to the lamp 1. These guide pins are displaced from an initial position shown in FIG. 1 to the position shown in FIG. 2 in which they are in close proximity to the leads 3 and 4 which have preivously been cut to the desired length. A pair of pliers 15 shown diagrammatically is then closed about the facing free ends of the leads 3 and 4 and of the guide pins 11 and 12 (FIG. 3). These pliers align and center the leads 3 and 4 according to arrows 16 and 17. Simultaneously the free ends of the guide pins 11 and 12 are aligned and centered according to arrows 18 by the same pliers.
In the closed position of the pliers 15 the guide pins 11 and 12 are slipped on the ends of the leads 3 and 4. Then the pliers are opened, permitting the cap 2 to be moved into engagement with the lamp 2 in the usual manner over the guide pins 11 and 12 and the leads 3 and 4 (FIG. 4).
The pliers 15 have the shape shown in FIGS. 5 and 6. They comprise two parts 22 and 23 adapted to pivot about spindles 20 and 21.
The part 22 comprises parts 43 and 44 connected together by bolts 42. The part 43 is provided with two crenate flanges 24 and 25. The part 44 is provided with a crenate flange 26. The part 44 has a non-crenate part 27 adjacent the flange 26. The said part 27 has a straight edge indicated by 46 in FIG. 5.
The part 23 has flanges 28, 40 and 29 connected together by bolts 49 and each provided with a straight edge 30, 41 and 31 respectively.
When the pliers are closed the free ends of the leads 3 and 4 protruding from the lamp are aligned between the flanks 33 and 34 of the flanges 24 and 25 and the straight edges 30 and 41 of the flanges 28 and 40. The ends of the leads are finally centered at several pointsalong their length.
Similarly by closing the pliers the ends of the guide pins 11 and 12 facing the leads 3 and 4 are aligned and centered. In this aligning and centering process the edge 46 of the part 44 acts as a stop abutment for the edge 31 of the flange 29. The plier parts 22 and 23 are adapted to pivot towards each other through an angle defined by the abutment edge 46. The arrangement further is such that when the pliers 22, 23 are closed the guide pins 11 and 12 are accommodated between the flanks 47 and 48 and the edge 31 of the flange 29 engaging the abutment stop 46 but are not clamped thereby. Hence they are centered while being displaceable. Similarly in the closed position of the pliers the wires 3 and 4 are accommodated between the edges 30, 41 of the flanges 28, 40 and the flanks 33, 34 of the part 43 but are not clamped thereby.
When the pliers 22, 23 are closed the free ends of the leads 3 and 4 and of the guide pins 11 and 12 are in the positions shown in FIG. 6. By axially displacing the guide pins through the closed pliers the said members, which have recesses 51 in their end faces, may he slipped on the ends 52 of the leads 3 and 4. After the pliers have been opened the ends 52 of the leads 3 and 4 remain in the said recesses, and the cap 2 is then moved until it occupies the position shown in FIG. 4.
What is claimed is:
1. A device for threading at least one current supply lead of a lamp through an associated aperture in a cap to be mounted on the lamp neck comprising a holder for said cap having at least one guide pin therein adapted to pass through said aperture, said holder being displaceable in the direction of the current supply lead, a pair of pliers for axially aligning the facing free ends of the current supply lead and guide pin when the same have been located close to each other, means for axially displacing said guide pin in said pliers relative to said current supply in claim 1 wherein said pliers when closed aligns and centers the lead and guide pin along a line extending in the direction of the length of said lead and guide pin.
3. A device for threading at least one current supply lead of a lamp through an associated aperture as claimed in claim 1 wherein said means on the free end of said guide pin is a shallow cavity into which the free end of the lead is inserted.
References Cited by the Examiner UNITED STATES PATENTS 1,612,537 12/1926 Schroeder 2925.19 2,349,956 5/1944- Gliss et a1. 29-2519 2,536,677 1/1951 Brunne-r et a1. 29-1555 2,915,807 12/1959 Paulson 2925.19 2,993,262 7/1961 Ross et a1 29-1555 CHARLIE T. MOON, Primary Examiner.
JOHN F. CAMPBELL, I. W. BOCK, W. I. BROOKS,
Assistant Examiners.

Claims (1)

1. A DEVICE FOR THREADING AT LEAST ONE CURRENT SUPPLY LEAD OF A LAMP THROUGH AN ASSOCIATED APERTURE IN A CAP TP BE MOUNTED ON THE LAMP NECK COMPRISING A HOLDER FOR SAID CAP HAVING AT LEAST ONE GUIDE PIN THEREIN ADAPTED TO PASS THROUGH SAID APERTURE, SAID HOLDER BEING DISPLACEABLE IN THE DIRECTION OF THE CURRENT SUPPLY LEAD, A PAIR OF PLIERS FOR AXIALLY ALIGNING THE FACING FREE ENDS OF THE CURRENT SUPPLY LEAD AND GUIDE PIN WHEN THE SAME HAVE BEEN LOCATED CLOSE TO EACH OTHER, MEANS FOR AXIALLY DISPLACING SAID GUIDE PIN IN SAID PLIERS RELATIVE TO SAID CURRENT SUPPLY LEAD, AND MEANS ON THE FREE END OF SAID GUIDE PIN ADAPTED TO BE COACTIVELY ASSOCIATED WITH SAID CURRENT SUPPLY LEAD BY SAID AXIAL DISPLACEMENT FOR THEREAFTER GUIDING SAID CURRENT SUPPLY LEAD THROUGH THE APERTURE IN SAID LAMP CAP WHEREBY THE CAP IS SLIPPED ON THE NECK OF SAID LAMP OVER SAID CURRENT SUPPLY LEAD ALIGNED BY SAID GUIDE PIN.
US214284A 1961-08-28 1962-08-02 Lead threading device for lamp basing apparatus Expired - Lifetime US3286323A (en)

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NL268694 1961-08-28

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BE (1) BE621790A (en)
CH (1) CH415836A (en)
DE (1) DE1232256B (en)
DK (1) DK103952C (en)
ES (1) ES280284A1 (en)
GB (1) GB1014744A (en)
NL (1) NL113094C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378033A (en) * 1980-09-12 1983-03-29 Xenell Corporation Apparatus and method for separating and cutting lead wires of lamps
US6607416B2 (en) * 2001-06-08 2003-08-19 Koninklijke Philips Electronics N.V. Method and apparatus for setting X-ray tube filaments
CN105736984A (en) * 2016-04-05 2016-07-06 浙江鼎炬电子科技股份有限公司 Heat-shrinkable tube sleeving device and sleeving method for LED filament bulb
CN105805446A (en) * 2016-04-14 2016-07-27 浙江鼎炬电子科技股份有限公司 Transparent sleeve penetrating equipment of bulb filament and transparent sleeve penetrating method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612537A (en) * 1924-08-29 1926-12-28 Westinghouse Lamp Co Leading-in wire-locating device
US2349956A (en) * 1942-07-01 1944-05-30 Western Electric Co Apparatus for assembling articles
US2536677A (en) * 1944-08-31 1951-01-02 Sylvania Electric Prod Base threading method and apparatus
US2915807A (en) * 1954-05-27 1959-12-08 Western Electric Co Fixture for assembling and aligning components of a magnetron
US2993262A (en) * 1956-07-02 1961-07-25 Standard Electrical Products C Method of aligning terminal leads

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1268711A (en) * 1959-08-28 1961-08-04 Method and apparatus for threading lamp bases

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612537A (en) * 1924-08-29 1926-12-28 Westinghouse Lamp Co Leading-in wire-locating device
US2349956A (en) * 1942-07-01 1944-05-30 Western Electric Co Apparatus for assembling articles
US2536677A (en) * 1944-08-31 1951-01-02 Sylvania Electric Prod Base threading method and apparatus
US2915807A (en) * 1954-05-27 1959-12-08 Western Electric Co Fixture for assembling and aligning components of a magnetron
US2993262A (en) * 1956-07-02 1961-07-25 Standard Electrical Products C Method of aligning terminal leads

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378033A (en) * 1980-09-12 1983-03-29 Xenell Corporation Apparatus and method for separating and cutting lead wires of lamps
US6607416B2 (en) * 2001-06-08 2003-08-19 Koninklijke Philips Electronics N.V. Method and apparatus for setting X-ray tube filaments
CN105736984A (en) * 2016-04-05 2016-07-06 浙江鼎炬电子科技股份有限公司 Heat-shrinkable tube sleeving device and sleeving method for LED filament bulb
CN105736984B (en) * 2016-04-05 2019-01-15 浙江鼎炬电子科技股份有限公司 A kind of heat-shrinkable T bush covered device and covered method for LED filament lamp
CN105805446A (en) * 2016-04-14 2016-07-27 浙江鼎炬电子科技股份有限公司 Transparent sleeve penetrating equipment of bulb filament and transparent sleeve penetrating method

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CH415836A (en) 1966-06-30
ES280284A1 (en) 1963-03-16
NL113094C (en)
DE1232256B (en) 1967-01-12
DK103952C (en) 1966-03-14
BE621790A (en)
GB1014744A (en) 1965-12-31

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