US2458789A - Wire coiling machine particularly for producing coiled filaments for electric lamps and electronic tubes - Google Patents

Wire coiling machine particularly for producing coiled filaments for electric lamps and electronic tubes Download PDF

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Publication number
US2458789A
US2458789A US742276A US74227647A US2458789A US 2458789 A US2458789 A US 2458789A US 742276 A US742276 A US 742276A US 74227647 A US74227647 A US 74227647A US 2458789 A US2458789 A US 2458789A
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US
United States
Prior art keywords
spindle
mandrel
wire
capstan
coiling machine
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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
US742276A
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English (en)
Inventor
Marter Hans
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.)
TECNICA APPLIC METALLI DURI ED
Tecnica Applicazioni Metalli Duri Ed Affini-Stama Soc
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TECNICA APPLIC METALLI DURI ED
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Publication of US2458789A publication Critical patent/US2458789A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • H01K3/04—Machines therefor

Definitions

  • This invention relates to wire coiling machines, particularly to machines for producing helical filaments for electric lamps or electronic tubes, and has for its main. object to devise machines which secure more uniformly wound products than the coiling machines heretofore available.
  • Figure 1 shows schematically a wire coiling machine of the general type to which the invention may beapplied
  • Fig. 2 shows in detail the essential portion of a machine embodying the invention proper.
  • a horizontal hollow spindle 2 is journalled in ball bearings 3 and rapidly driven from an electromotor 4 by a belt 5 (2,000 to 3,000 R. P. M.).
  • the mandrel wire H of iron or molybdenum passes. from a suitably braked supply reel I, at low speed (a few millimeters per second), through the spindle bore and, on leaving the discharge end of the spindle 2, is surrounded by the filament wire l2 of tungsten which passes from a winding head 6 over a guide roller to be coiled upon the mandrel.
  • The-winding head 6 is removable from the spindle 2 and entrained by friction.
  • an exchangeable mandrel feed member or capstan l Disposed near the discharge end of the spindle '2 is an exchangeable mandrel feed member or capstan l.
  • the capstan is slowly driven through gears B, 9 from the spindle'Z'.
  • the rough capstan surface is surrounded by one or more turns of the mandrel H in order to uniformly advance the mandrel by friction.
  • the travelling mandrel is engaged by auxiliary guide rollers I3, l4 and passes from the capstan 1 onto a take-up reel Ill.
  • the machine as a rule, is equipped with accessory devices, such as a heating device for the tungsten wire, which are not essential in connection with the invention and hence not illustrated.
  • Machines of this kind have some deficiencies Whose detriments increase with smaller diameters of the wire to be coiled.
  • the distance between spindle end and capstan is reduced t0 a minimum. by having the mandrel pass directly from the-spindle end to the capstan, i. e. excluding' any such intermediate guiding means as the roller H! in Fig. 1, and mounting the spindle so that it can betilted about a stationary pivot axis parallel to that of the capstan.
  • the direction in which the mandrel leaves the spindle and runs onto the capstan can readily be adapted to the different diameters of the exchangeable respective capstan members ;.v and exhibiting means may be provided for indicating ona scale the proper angular adjustment of the spindle for each of the customary diameters of an available set of capstan members.
  • the. tiltable spindle is directly drivenby anelectromotor whose armature is mounted on the spindle, preferably so that any intermediate coupling devices are avoided and the spindle represents a part or an extension of the motor shaft.
  • the occurrence of pitch errors of the helix due to axial displacements of the spindle is avoided by assigning the guidance of the mandrel within the spindle to a separate guiding tube.
  • This tube is inserted in the bore of the spindle and fastened so that it tilts together with the spindle but is prevented from following its revolving and possible axial movements.
  • Fig. 2 is limited to showing the portion of a wire coiling machine essential from the viewpoints of the present invention, and the reference numerals in Fig. 2 are identical with those used in Fig. l for the corresponding respective elements.
  • a mounting or base plate 25 carries all illustrated parts including a vertical hollow spindle 2 whose upper portion carries the armature of an electric motor 4.
  • the roller bearings 3 for the spindle are mounted on a plate structure 2? whose portion 21a is pivoted about a shaft 28.
  • Another portion 21b of structure 27 carries a pointer 29 for indicating on a scale 38 the proper angular adjustment of the spindle 2.
  • the adjustment is carried out, for instance, by a hand wheel 3
  • the plate 2? is securely fastened in posi tion by tightening a hand screw 19 which passes through a slot 20 in portion 21b of plate 21.
  • a worm 8 firmly mounted on spindle 2 between the bearings 3 meshes with a Worm gear 9 whose shaft 28 carries a pinion 33 on the other side of base plate 25.
  • a large spur gear 34 meshes with pinion 33.
  • the shaft 35 of gear 34 extends to the front side of base plate 25 and carries an exchangeable mandrel feeding member or capstan in proximity of the lower end (discharge end) of the spindle.
  • a winding head 36 with the supply reel t for the tungsten wire 92 is placed on the lower end of spindle 2 to be entrained by friction. Guiding nozzles or rollers for the tungsten wire are denoted by 24.
  • a tube is loosely inserted in the bore of the spindle, the projecting upper and lower ends of the tube being visible in Fig. 2 and denoted by 2
  • the mandrel wire it is guided through the tube 21.
  • is firmly clamped between clamping checks 22 tightened by a hand screw 23.
  • a small hand wheel 3'! at the upper end of spindle 2 permits revolving it manually.
  • is designed as an exchangeable nozzle to permit adapting the nozzle opening to different mandrel diameters and replacing worn nozzles Without having to replace the entire tube 2
  • the mandrel ll moves slowly from a supply reel (not shown in Fig. 2) over several guide rollers, of which only one is shown at 26, to the upper end of the guiding tube 2
  • the tungsten wire I2 is coiled upon the mandrel, before the mandrel surrounds the capstan I with one or more turns and travels, with the tungsten coil upon it, onto a take-up reel (not shown in Fig. 2).
  • a wire coiling machine comprising a hollow mandrel-guide spindle revolvable about its axis, a winding head disposed on said spindle near its discharge end for accommodating the wire to be coiled, a mandrel feeding member disposed near said spindle end and revolvable about an axis extending at an angle to an axial plane of said spindle, said spindle being angularly displaceable about a stationary pivot axis extending parallel to said axis of said feeding member.
  • a wire coiling machine comprising a hollow mandrel-guide spindle revolvable about its axis, a winding head disposed on said spindle near its discharge end for accommodating the wire to be coiled, a revolvable mandrel-feeding member disposed in front of said spindle end and having an axis of revolution extending at a right angle to an axial plane of said spindle, a structure having hearings in which said spindle is revolvable and having a stationary pivot whose axis is parallel to that of said member.
  • a wire-coiling machine comprising a hollow mandrel-guide spindle revolvable about its axis, drive means for said spindle, a winding head placed on said spindle near its discharge end for accommodating the wire to be coiled, a mandrel feeding member disposed near said spindle end and revolvable about an axis extending substantially at aright angle to an axial plane of said spindle, gear means coupling said spindle with said member for driving the latter and having a gear member whose axis is parallel to that of said member, and a structure having bearings for said shaft and being pivotally movable about said gear memberaxis to permit angularly displacing said spindle.
  • a wire-coiling machine comprising a hollow mandrel-guide spindle revolvable about its axis, anelectromotor having an armature mounted on said spindle for driving the latter, a winding head, placed on said spindle near its discharge end for accommodating the wire to be coiled, a mandrel capstan in front of said spindle end for pulling the mandrel through said spindle, and gear means connecting said capstan with said spindle.
  • said gear means having a gear member driven from said spindle and rotatable about a stationary axis, and a structure carrying said motor and spindle and being pivotally movable about said stationary axis.
  • a machine comprising a tube disposed in the hollow of said spindle to be traversed by the mandrel, and fastening means disposed at the other end of said spindle and engaging said tube so from revolving while permitting it to participate in angular displacements of said spindle.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wire Processing (AREA)
US742276A 1946-05-18 1947-04-18 Wire coiling machine particularly for producing coiled filaments for electric lamps and electronic tubes Expired - Lifetime US2458789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT266228X 1946-05-18

Publications (1)

Publication Number Publication Date
US2458789A true US2458789A (en) 1949-01-11

Family

ID=11219908

Family Applications (1)

Application Number Title Priority Date Filing Date
US742276A Expired - Lifetime US2458789A (en) 1946-05-18 1947-04-18 Wire coiling machine particularly for producing coiled filaments for electric lamps and electronic tubes

Country Status (6)

Country Link
US (1) US2458789A (en, 2012)
BE (1) BE472552A (en, 2012)
CH (1) CH266228A (en, 2012)
FR (1) FR943784A (en, 2012)
GB (1) GB622712A (en, 2012)
NL (1) NL66732C (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667204A (en) * 1952-03-29 1954-01-26 Westinghouse Electric Corp Coiling head assembly
DE1416092B1 (de) * 1959-07-08 1969-09-11 Eduard A Gerber Vorrichtung zur Kompensation des Temperaturganges der Frequenz einer Schwingkristallscheibe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1227659A (en) * 1916-10-18 1917-05-29 Gen Electric Wire-coiling apparatus.
US1338498A (en) * 1914-12-29 1920-04-27 Westinghouse Lamp Co Filament-winding machine
US1667681A (en) * 1924-01-29 1928-04-24 Gen Electric Wire-coiling machine
US1667677A (en) * 1924-01-28 1928-04-24 Gen Electric Wire-coiling machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1338498A (en) * 1914-12-29 1920-04-27 Westinghouse Lamp Co Filament-winding machine
US1227659A (en) * 1916-10-18 1917-05-29 Gen Electric Wire-coiling apparatus.
US1667677A (en) * 1924-01-28 1928-04-24 Gen Electric Wire-coiling machine
US1667681A (en) * 1924-01-29 1928-04-24 Gen Electric Wire-coiling machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667204A (en) * 1952-03-29 1954-01-26 Westinghouse Electric Corp Coiling head assembly
DE1416092B1 (de) * 1959-07-08 1969-09-11 Eduard A Gerber Vorrichtung zur Kompensation des Temperaturganges der Frequenz einer Schwingkristallscheibe

Also Published As

Publication number Publication date
FR943784A (fr) 1949-03-17
NL66732C (en, 2012)
GB622712A (en) 1949-05-05
CH266228A (de) 1950-01-15
BE472552A (en, 2012)

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