US1553309A - Universal filament-coil-winding machine - Google Patents

Universal filament-coil-winding machine Download PDF

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Publication number
US1553309A
US1553309A US699542A US69954224A US1553309A US 1553309 A US1553309 A US 1553309A US 699542 A US699542 A US 699542A US 69954224 A US69954224 A US 69954224A US 1553309 A US1553309 A US 1553309A
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wire
filament
mandrel
shaft
clutch
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Expired - Lifetime
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US699542A
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English (en)
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Eisler Charles
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Individual
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Individual
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Priority to US699542A priority patent/US1553309A/en
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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

  • B Iy invention relates to a universal filament coil winding machine, and particularly to a machine for making helical metallic filaments for incandescent electric lamps in which the lamp filament is wound around a mandrel wire of copper, steel or the like,
  • the coiled filament In order to secure the helical filament withinthe incandescent electric lamp, it is necessary that the coiled filament have one or more breaks in the form of portions substantially without coiling, or portions of coarser pitch, at which points the filament can be supported in the bulb or attached to i the lead wires. These breaks also provide a convenientplace for parting the continuouslv wound coil into sma;ller:. portion s...of 'd-f s ired lengths to be. placed in incandescent electric lamps. 'Tliese breaks are arranged to makea distinct 'pattern or design "into which the filament helices of varying pitch are formed.
  • the general object of the invention is to provide a highlyeificient machine for autoplain wound helices or for making helices having a variety of patterns or breaks therein that I designate my, filament coil winding machine as universal.
  • One feature of my invention consists of a novel mandrel feeding mechanism which embodies clutch means adapted to positively control the feeding movement and to eliminate s all irregularity and lost motion in connection therewit
  • Another feature of the invention consists inthe provision of simple and trouble-proof means for electrically heating the filament wire during the coiling operation, to facilitate winding of the helical coils and to pre- 65 vent breakage, which would result from winding the filament wire when cold.
  • Such heating in my invention is concentrated in the vicinity where it is most effective, namely, at and just in advance of the region where 9 the filament wire is wound on the mandrel wire.
  • Another feature consists in the provision of means near the point of winding the filament coils, to prevent distortion or malformation of the coils due to pulling-aside of the mandrel wire and dragging,.swaying, or vibration of the mandrel and filament wires, thereby insuring the formation of a uniform and highly satisfactory product.
  • Fig. 1 is a plan view of my universal filament coil winding ma'tically and continuously winding helical irehine.
  • Fig. 2 is a side elevational view of lamp filaments having substantially any desired breaks or pattern.
  • the machine of the present invention can also be used, if desired, for the winding of helices of uniform pitch, not having the break feature above referred to, and it 50 is by reason of this adaptability for making .upper male driving member.
  • Fig. 3 is a cross-sectional View of the clutch and mandrel feeding mechanism.
  • Fig. 4 is a cross-section of the clutch Worm gear, showing the lower male clutch member.
  • Fig. 5 is a plan view of the Fig. 6 isa line 66, Fig. 1.
  • Figs. 7, 8 and 9 show three types of cams for forming three types of filament patterns.
  • 'Figs. 10, 11 .and 12 show helical filaments having three types. of patterns, using cams such as shown in.
  • the mandrel wire leaving its spool, passes over an idler, through a guiding and tensioning device, and through the bore of a shaft on which rotates a bobbin carrying a spool of filament wire, which'filament wire is electrically heated and wound around the mandrel wire as the latter emerges from the bore of the shaft.
  • the mandrel wire, with the helical filament wound thereon, is looped around a continuous groove in a mandrel feeding drum and so kept in axial alignment in the hollow shaft, around. an idler drum, and is Wound on a receiving spool or reel.
  • the mandrel feeding drum around which the mandrel wire is looped before same 'passes'on to the receiving spool, is mounted on the upper end of a vertical shaft, on the lower part of which is mounted the devices for driving the feed drum, including a clutch mechanism, which is so constructed as to be free from backlash and to secure uniformity and certainty. in the formation of the filament winding patterns.
  • Spool 2 from which mandrel wire 3, is fed, is adjustably mounted on stand 4, and can be removed by unscrewing wing'nut 6.
  • Spool 2 may be made of material which is a non-conductor of electricity, or in the event that a metallic spool is used, stand 4 may be insulated. The tension on spool 2 can, be
  • Idler 14 can be adjusted by moving collar 18 in or out on the bracket 16 on which collar 18 is slidably mounted, thereby changing the tension on spring 20, which connects the pivoted idler bar 21 with collar 18.
  • Insulating bushing 22 insulates bracket 16 from machine base 24.
  • Shaft 43 carries on the end thereof remote from the pulley 46, the filament winding mechanism consisting of'a revolving plate 62, a metallic bobbin 64 for filament-wire 65, in the center of plate 62, and a guide pulley 66 located in crank relation to shaft 43 by being placed toward the periphery of plate 62 and set at a suitable angle with respect to the plane of plate 62 for guiding the filament wire.
  • Shaft 43 with bore 42 therein preferablyprojects through and-beyond plate 62 and bobbin 64, so that the mandrel wire 3- passes therethrough, and the filament wire is wound thereon when the mandrel wire emerges from bore 42 of shaft 43.
  • shaft 43 or part thereof may be lined with an insulating tube to'insure the mandrel wire from being electrically grounded.
  • bracket 68 Near the edge of plate 62 and insulated therefrom is mounted a bracket 68, which has adjustably fastened therein a guide 70,
  • Shaft 43 drives the transverse shaft 48 by means of a Worm 49 on the former and a worm gear 50 on shaft 48.
  • Shaft 48 drives from one end thereof, a gear train consist ing of gears 51, 52 and 54, and. from its opposite end, a similar gear train consisting of gears 56, 58 and 60.
  • gear sets are readily removable and replaceable to provide various desired driving ratios.
  • first of these gear trains supplies the normal drive movement for the feed drum 72 and j secured by insulating pin 102 and insulatment wire -wound thereon.
  • the periphery of mandrel feeding drum 72 is provided with grooves as 72, 72 72, to receive the mandrel wire with the fila-
  • the wound product consisting of the mandrel wire 3 with the helical wound filamentfwire thereon makes a complete turn around groove 7 2 of drum 72, passes around a groove in idler drum'74, back again and around groove 72 of drum 72, a second time around idler 74, around groove 7 2 of drum 72, and thence to receiving spool? 6.
  • the mandrel wire 3 is axially, alined at all times with the axis of hollow shaft 43.
  • the receiving spool 76 is spring tensioned on its actuating shaft 78 by leaf spring 80, the tension being adjustable by knurled nut 81, and in this way spool 76 can slip relative to its driving shaft 78 to compensate for varying diameters as the product wire 82 is wound thereon.
  • Idler drum 74 is mounted to turn on a vertical post 83, which is insulated from machine base 24 by insulating bushing 85. The means for driving feed drum 72 are described below.
  • the means for rotating the receiving spool 76 and its shaft 78 comprise the shaft-.86 (Fig. 6) driven from shaft 48 through the 7 train of gears 51, 52, 54.
  • Shaft 86 has pinned thereto a pulley 88 which is connected bybelt 92 to drive pulley 94 on shaft 78.
  • Shaft 78 rotates receiving spool 76 through the slipping connection above referred to.
  • Shaft 86 extends only partially through bore 95 of pulley 88, leaving a space therein 1 to receive and provide a bearing for one end of shaft 96, which is in line with shaft 86, and is driven from shaft 48 through the other gear train 56, 58 and 60.
  • Shafts 86 and 96 rotate independently and may be driven at different speeds, the bore 95 of pulley 88 serving merely as a support or bearing for the inner end of shaft 96.
  • the actuating mechanism for the mandrel feeding drum 72 will now be described. Same comprises means for imparting uniform driving movement to the drum 72, but in such a way, however, that drum 72 may be given a relatively quick additional forward movement from timeto time.
  • the shaft 86 serves to impart substantially uniformrotation to feed drum 72 by means of worm'98 fixed on shaft 86, worm gear 100 meshing with worm 98, and clutch mechanism hereinafter referred to.
  • Shaft 96 actuates the clutch mechanism for imparting intermittent advancing movement to the feed drum 7 2, thereby determining the. pat- Bern of the filament as wound on'the manrel.
  • the insulated mandrel feeding drum 72 is thereto a male clutch member 114, which isdriven from worm gear 100, the lower face whereof is provided with a recess 116 to constitute same a female clutch member.
  • Said male clutch member 114 and the shaft 106 and drum 72 are driven from the combined female clutch member and worm gear 100 by means of the eccentric clutch cams 118, which are pivoted on pins 120 on said male clutch member 114, and have their outer eccentrically formed faces 122 adapted to enter the recess 116 in the lower side of menber 100 and engage the peripheral wall-124 of said recess.
  • the clutch cams" 118 are eccentrically shaped fiat members having their preferably arcuate end working faces 122 eccentrically formed relative to the pivoting point on pins 120, so that when the clutch cams are turned on their pivot, there is a clearance between what may be referred to as the forward pormember 114, the apex of .the V being passed around supporting pins 138 provided in the male clutch member 114 for that purpose,
  • the apparatus for imparting independent forward movement to shaft 106 and feed drum 72 is operated from shaft 96.
  • Worm 140 meshes with and drives the worm wheel 142 and its shaft 144.
  • Fixed on the shaft 144 by the nut 146 is the pattern cam 148.
  • Such cam may be of any desired form and the mounting thereof is such that it is readily replaceable.
  • F igs. 7, 8 and 9 I have shownpattern cams 148 148 and 148 adapted for the making of products having the patterns illustrated in Figs. 10, 11 and 12 respectively.
  • slide bar 152 slidably mounted in bearings 154 and 156.
  • Such slidebar 152 is provided with-adjustable collars 158 and 160.
  • the spring 162 encircling slide bar 152 and interposed between the collar 160 and the bearing 156 serves to give a quick return movement to slide bar 152 and to keep the flat end 150 up against the irregular surface of the cam 148. It will be seen that with the construction described quick return, longitudinal reciprocating movement is imparted to the slide member 152 depending upon the particular contour of thecam 148.
  • Slide bar 152 has fixed thereto a yoke 164 having a slot 166 for reception of pin 168, which is secured to male clutch member 170.
  • Said male clutch member 170 is mounted to turn on a collar 171 of a female clutch member 180, referred to below, and provided with pivot pins 172 and eccentric clutch cams 174 and springs constructed and arranged as in the case of the clutch parts already described for the continuous movementdrive with the sole exception that the eccentric gripping surfaces of the eccentric clutch cams 174 on male clutch member 170 those on male clutch member 114.
  • Such eccentric clutch cams 174 engage a driving surface 176 forming a wall of a recess 178 in a'female clutch member 180, which recess 178 is of a form to receive the eccentric clutch cams 174.
  • Said female clutch member 180 is pinned by pin 181 to shaft 106.
  • Worm gear 100 and its associated parts serves to impart substantially uniform feeding move-' ment to feed drum 72 and mandrel wire' 3,
  • gears of gear train 51, 52 and 54 being selected to give the desired pitch and relative speed of rotation.
  • drum acceleration is sufficiently increased, it will result in a portion of the filament wire substantially not 0 being coiled at all, but lying practically parallel to the mandrel wire.
  • each of the male driving members 114 and 170 near the edge of the plates and opposite the pivot pins on which the eccentric clutch cams 'are mounted.
  • T 0 place clutch members 114 and 170 into operative position, each, clutch cam is forced against its spring and a nail or the like inserted in the recess 250 from the under side of the clutch member and reaching to about the upper surface of the cam, to hold the cam in such position.
  • the male clutch members are placed into their respective female clutch the pressure of the springs expands the cams into engagement with the wall of the female clutch member recess.
  • the circuit is completed by connecting the other pole 180 to a part in electrical contact with the mandrel wire, as insulated post 83, on which the mandrel wire idler drum 74 is pivoted, thereby leaving no path for the current except through the filament wire and heating the filament wire in the area where it is most needed, namely, where the mandrel wire emerges from the bore of the revolving bobbin, and the filament wire therefrom is wound around it.
  • the current is preferably of such capacity as to heat the filament wire to a red heat, which is an ideal condition for winding same around the mandrel wire.
  • the circuit includes suitable rheostats' is passed on its way to the winding point, rotatable means on'said shaft rotating c0- axially therewith for winding filament wire on the mandrel wire after its emergence from the hollow shaft, and steadying means rotating with said filament windin means for the mandrel wire in the neighborhood where the filament-wire is wound thereon.
  • a rotatable shaft with an axial bore, means for feeding mandrel wire through the bore, means for winding filament wire on the mandrel wire after its emergence from the shaft bore and comprising a filament bobbin coaxial with the shaft, a guide for the filament wire from off the bobbin rotating with said shaft in substantially crank relation thereto, and a steadying member also rotatmg with said shaft and adapted to restrain the mandrel wire from displacement in a direction toward the filament wire guide.
  • a rotatable shaft having an axial bore, means for feeding mandrel wire therethrough, and means for winding filament wire on the mandrel wire after it has passed through the bore of the shaft
  • a bobbin rotating coaxially with said shaft, a substantially disk like member on said shaft, a filament wire guide on said disk and a steadying member of semi-circular cross-section also on said disk, the steadying member being adapted to extend close to the mandrel wire in the neighborhood where filament wire is wound thereon and on the same side of the mandrel wire as the filament wire guide, whereby'vibration and displacement of the mandrel wire toward the filament wire guide are substantially prevented.
  • means for winding filament wire around mandrel wire comprising a plate, a filament contaming bobbin mounted in-the center of said plate, an idler. mounted near. the periphery .of said plate in crank relation to the bobbin,
  • means for winding filament wire around a mandrel wire comprising a shaft with a bore therein through which the mandrel wire emerges, a
  • revolving plate on said shaft, a bobbin mounted in the center of said plate, an idler mounted on said plate at an angle with respect to the plane of said plate, over which the filament wire passes before it is wound around the mandrel wire, and a bar of semi circular cross-section mounted on said plate and adapted to revolve therewith, the flat side of said bar being adapted to bear against the mandrel wire as the filament wire is wound thereon;
  • filament winding means and mandrel feeding means including a rotary feeding member having a plurality of grooves therearound, a rotatable idler member also having a corresponding. plurality of grooves therearound, the wound product being adapted to pass around the feeding member and idler member as many times as there are grooves therein, and a receiving reel for taking up the wound product.
  • filament winding means In-a machine for Winding filament wire on a mandrel wire, filament winding means, a mandrel feed drum, means including an eccentric clutch making substantially continuous driving engagement in one direction for imparting substantially uniform feeding movement to said drum, and ancillary means for imparting momentary accelerated feeding movement to said drum.
  • said mandrel feeding means including eccentric clutch means adapted to positively actuate thefeeding means and permitting independent advancement of the feeding means without resulting lost motion.
  • filament winding means In a machine for winding filament Wire on a mandrel wire, filament winding means, a take up reel, a feed drum for feeding the mandrel-wire with respect to the filament winding means, and eccentric clutch means for rotating the feed drum.
  • filament winding uniform rotation and intermittent momentary accelerated rotation. respectively to said mandrel feed means In a machine for winding filament "filament wire on a mandrel w1r'e, filament winding uniform rotation and intermittent momentary accelerated rotation. respectively to said mandrel feed means.
  • filament winding means for winding filament wire on a mandrel wire
  • mandrel take up means mandrel feed means between the take up means and filament winding means
  • substantially backlash free eccentric clutch means for imparting normally substantially uniform rotation and intermittent momentary accelerated rotation respectively to said mandrel feed means.
  • filament winding means In a machine for winding filament wire on a mandrel wire, filament winding means, mandrel take up means, mandrel feed means between the take up means and filament winding means, and spring engaged eccentric clutch means for imparting normally substantially uniform rotation and intermittent momentary accelerated rotation respectively to said mandrel feed means.
  • a hollow shaft through which the mandrel wire is-passed, a tensioning guide for mandrel wirein alinement with the shaft'bore,'a grooved feed drum for mandrel wire, having the groove thereof arranged tangentially to the axis of the shaft bore, means for winding filament Wire on the mandrel wire between the shaft and the feed drum, and means for electrically heating the filament wire as it"is wound on the mandrel wire.
  • filament winding means In a machine for winding filament wire on mandrel wire, filament winding means, a feed drum for the mandrel wire, a

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US699542A 1924-03-15 1924-03-15 Universal filament-coil-winding machine Expired - Lifetime US1553309A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454318A (en) * 1943-04-24 1948-11-23 Westinghouse Electric Corp Method of fabricating electron discharge devices
US2896690A (en) * 1957-04-12 1959-07-28 Westinghouse Electric Corp Inertia-type overwind device for a filament coiling machine
DE1177246B (de) * 1957-10-29 1964-09-03 Ver Draadfabrieken Nv Verfahren zur Herstellung von Gluehwendeln fuer Gluehlampen, Entladungsroehren u. dgl.
US6161598A (en) * 1996-12-20 2000-12-19 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Method for producing helically wound filament elements, and filament elements produced according to this method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454318A (en) * 1943-04-24 1948-11-23 Westinghouse Electric Corp Method of fabricating electron discharge devices
US2896690A (en) * 1957-04-12 1959-07-28 Westinghouse Electric Corp Inertia-type overwind device for a filament coiling machine
DE1177246B (de) * 1957-10-29 1964-09-03 Ver Draadfabrieken Nv Verfahren zur Herstellung von Gluehwendeln fuer Gluehlampen, Entladungsroehren u. dgl.
US6161598A (en) * 1996-12-20 2000-12-19 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Method for producing helically wound filament elements, and filament elements produced according to this method

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