US2115423A - Method and device for transporting wires - Google Patents

Description

26, 1938. c. KoRvER METHOD'VANDEDEYVICE FOR TRANSPORTING WYIRES Filed April 25, 1955 fi 66 J0 T23,

55 l (mais zo a: 15 :if:

Patented Apr. 26,7 1938 r I I UNITED STATES Nrn-:NTA OFFICE ./1 Cornelis Korver, Eindhoven, Netherlands, assignor to N. V. Philips' Gloeilnmpenfabrieken.

Eindhoven, Netherlands Application April 28. 1935, Serial No. 18,457 .In Germany May 18, 1934 11 Claims. V(Cl, 22,6-l9) My invention relates to a method and device cient internal strain to assume the desired curlfor transporting wires, and more particularly for lng upon entering the space, and topermanently transporting wires having small mechanical retain such curling. In case the wire has insufstrength. 1 ilcient internal strains to assume such curling 5 My invention is particularly well adapted for the required internal strains may be imparted 5 introducing a thinwire illling into ilash lamps thereto before it is carried into the limited space, of the type described in the copending U. S. apfor instance by drawing the wireover'an angular plication of van Liempt Ser. No. r123,008, led

April 28, 1934, and will be described in connec- Ashas been stated above, the invention is partion with such lamps; however, its use is not ticularly well adapted for placing a fine filling 10 limited thereto. within ilash lamps. Flash lamps manufactured It is very difficult, if not impossible to transin accordance with the'invention have the import, for example through a tube, a, wire having portant advantage that the combustion is so a small absolute mechanical strength, for incomplete that a maximum yield of actinic light l5 stance a tensile strength of 40 grams or less, by is insured. Due to such complete combustion the 15 means of a pressing or pushing action and withobjectionable phenomenon of molten unburned out the use of a drawing or pulling action. metal particles being thrown against the wall of However, there are many instances in which it the bulb and causing bursting of the bulb, which is desired to transport or carry such a wire and frequently occurs in the case of incomplete comm in which the conditions are such as to render it bustion, is also avgided, 2

' impossible to use a drawing action. In such in- To obtain complete combustion 1n prior art stances a pressing or pushing action has t0 be lamps, a large excess or oxygen was used; i. e. used- For example, when it 1s desired to provide greatly more than theoretically required; in dash a hollow body with a iilling of a fragile wire. lamps manufactured according to thelnve'ntion and more particularly when it is required that the the provision of much excess oxygen is unneces- 25 W'ue be distributed unuoruuy Within Such u muy sary, and therefore a comparatively low-pressure a pushing or pressing action is required. gas mung can be used"y This has the further ad- In accordance with the present invention the vantage that the danger of the bulb bursting transportation of a w'lre of small absolute dnl-.ing the combustion is also eliminated.

Strength into u uuuted space is eueuteu by The ilash lamps manufactured in accordance 30 means of a gaseous medium which medium carwith the invention have a very short .nash ries the Wire along with t- Furtuermore the time, for instance 1/40 sec. or even less. and Wu'e 5 carried cau be distributed with great uni also a very short contact time", for instance 1/25 formity and in a curled state within the'limited se in addltionlthe Hash lamps made in M Space. 35

By. wires as used herein is meant not only rgalepwgotluognintgoyblnrffrs? metal wires, but also glass wires, artificial silk time, and Contact time., 'Wires and the uke' 'rn term "contact unie" is to be understood In addition to transporting the Wire the gas to meean the lapse of time between the instant at d as carrying means also has a straightening 40 4o use which current is supplied to the bulb and the inzfts; 4:sie :s sazfsazszluzssr ses a who the of e travel such as the wire touching the inner sur- 31u5- Claims directed to hollow bodies and flashlight face of the tube through w'hich it is being trans lamps produced in accordance with the method of ported.

y esnlts are obtained when the present invention are made 1n my copending Particularly gd r application ser. No. 91,003, sied July 16, 1936.

the incoherent medium is it; guion opens into the limited In Order that the invention may be clearly space and in which the tube openings for the inlet understood and readily carried into eiect, it will 0 of the wire and of the gas are so located and be described more fully with reference to the 50 dimensioncd with respect to its outlet opening accompanying drawing, in which,

into the limited space, that the rate of ow of Fig. 1 is a partly sectionized side view of a dethe medium is reduced upon entering this limited vice suitable for carrying out the invention, and

space. showing a ilash lamp bulb being illled with ine As a rule. auch thin wires inherently have sufwire; v,

` Fig. 2 is a sectioniaed view of Fig. l taken on the line I-I of Fig. 1:

Figisaviewofatinishediiashlamphaving a wire filling placed therein.

Referring to Figs. l and 2, a flash lamp bulb I having a glass envelope comprising a neck portion II, is arranged with its neck portion extending over a portion of a guide tube l. The bulb is shown in the process of being filled with a thin wire 2, having an absolute tensile strength of about 25 grams; the wire passing through the guide tube l. The guide tube I is formed on its end removed from the bulb. with a small funnelshaped aperture I and on its other end with a portion i of enlarged diameter, and is also provided with an extension Il through which enters the incoherent medium, for instance compressed The compressed air ows in a direction indicated by the arrows I2 from a source of supply (notshown) through an' inlet l' to a control valve V (see Fig. 2), later to be more fully described, throughvthe valve V and tubes 5 and into the guide tube l.

In starting the operation of placing the wire into the bulbl a short end-portion of the wire 2 is rst treated to remove any internal strains and consequentlyvto eliminate any tendency of this portion to coil; this being done, for example, by heating the wire, -for instance in the case of magnesium wire. by annealing the portion of the wire at a temperature of from 300 to 400 C. for about ve seconds. 'Ihe wire portion so treated is thenled through the aperture 'I to extend a short distance into the guide tube l so that, upon admittance of the incoherent medium, the wire 2 will be transported along the tube and into the bulb I.

The construction of aperture I causes substantially the entire compressed air stream to flow towards the bulb I and then to pass to .the outside along the space formed between the tube I and the neck portion II, as indicated by the arrows. 'Ihe compressed air flows through the tube I with considerable velocity and causes the wire 2 to be carried into the bulb, and at the same time tends to straighten the wire while in the tube l. As a result the feeding of the wire into the bulb wilLtake place in a continuous, uninterrupted operation without the formation of wire pellets within the tube l. caused by friction due to the wire coming into contact with the tube wail.

Due to the tube being enlarged at B, the velocity ofthe compressed air in tube portion i is greatly reduced, which causes the wire 2 to assume its natural curling and to uniformly ll up the bulb I.

The supply of wire `2 and the control of the flow of the compressed air to tube I takes place by means of a device A; the parts of which are mounted on a'common base plate 2i. The device A consists of a bearing block I9, secured to the base plate 2| by means of four screws I9' and supporting a shaft Il, which shaft is xedly secured to block I9 by a set screw 2II. Rotatably mounted upon the shaft Il is a pulley I4 having two V-shaped grooves 10--1I groove 1II serving to drive the pulley by means of a belt from a driving source (not shown), for example from an electric motor, and the groove 1I serving for a Purpose later to be described.

The pulley il is provided on one side with a boss 65, acting as a bearing` against the block I 9, and on its other side with a counterbore causing the disc Q/b containing a thrust bearing I0. Secured to one side of the pulley is a friction ring I8, for a purpose later to be described. The pulley Il is Y continuously rotated during the operation of the evice.

Rotatably and slidably mounted on the shaft Il is a bushing 8 having fixedly secured at one end, by means of a pin 66, a flanged disc-9. Arranged on the bushing 8 so as to move therewith-and with the ange 9-is a spool 1 upon which is wound a supply of the wire 2.

Secured to the base plate 2| by screws 61 is an angle bracket 68 having secured to its upstanding leg, a pad III of friction material. In the position shown the disc 9 is forced against the pad Il by a compression spring i1 acting through the thrust bearing I6 upon the pulley il, thus ushing 8, and reel 1 to remain at rest.

Arranged with a free fit over bushing 0 and bearing with one side through a thrust bearing I5 upon the side of spool 1, is one end 22' of an arm 22 whose other end is iixedly secured by means of a pin 1I to a rod 23 carrying at one end a push button 24.

The rod 23 is suitably guided so as to have 'axial movementas indicated by the doubleheaded arrow-by two projections iii-5I of a supporting bracket II, which bracket is secured to the base plate 2| by means of screws 80. 'Ihe projection 5I also serves as the valve V, which controls the iiow of compressed air to the tube I and for this purpose is provided with passageways 26 and 26' through which may flow the compressed air.

'Ihe rod 23 is provided with a portion 25 of reduced diameter, which, when the rod is in the position shown by the dotted lines, connects the passageways 28 and 26', and thus permits the flow of air. In the position shown the rod 23 intercepts the passageways 26-26', and thus prevents the flow of air.

Upon movement of the push button ZI-and rod 2Iin the directionindicatcd by the arrow 15, the end 22' of arm 22, acting through thrust bearing I5, moves the reel 1-together with the bushing l and disc' Q-against the compression of spring I1. If the push button is moved into the position indicated by the dotted lines, flange" 9 will assume the position shown in dotted lines with its surface in contactwith the friction ring Il. Thus iiange s-together with the bushing I and reel 1wilI` be driven by and rotate with the pulley Il. This movement of the push button 24-and the rod 22-also brings the reduced portion 2l into augment with the passageways '26 and 2i' and interconnects same to permit the ilow of compressed air to the tube 4. The reduced portion 25 is so located on the rod 23 that the interconnection of passageways 26 and 2li', and thus the flow of air. takes place 'before the flange 9 contacts with the friction ring I8; i. e., before the reel 1 rotates and the supplying of the wire 2 begins.

Secured to the base plate 2| ,'by screws 9i is a supporting block 30 having rotatably mounted thereon a shaft 29. Fixedly secured to the shaft 29y by a pin 92 is a grooved pulley 21, which pulley. together with the shaft 29, is driven by a belt SS-indicated by a dot-dash line-from the groove 1I of pulley Il. Secured to a reduced portion 56 oi' shaft 2! by means of a nut II is a drum 2l having a surface 28', over which is drawn the wire 2.

The drum 28 is so driven from the pulley Il conditions, when using compressed air at an that the peripheral speed of the surface 2l' is greater-for instance 10% to 15% greater-than the greatest speed at`which the wireleav the reell. Duetothisincreasedspeedthereisa certain amount of sliding friction between the wire 2 and the surface 2l', which keeps the wire portion between thedrum 2l and reel 'I under purpose a device C is provided.

'Ihe device C consists ofa rod 3l having a di-V ametrical and axially-extending slot 32 (see Fig. i) through which passes the wire 2;'the rod 34 being supported by a bracket Il secured to the base plate 2I. 'Ihe rod Il is supported so as to be adjustable about its axis and adapted to be,

secured in the desired position by means'of a set screw il. 'I'hus the rod 3l .can be secured in the desired position with the slot 32 at the correct angles to give the wire the desired amount of curling power.

With the push button 2l pushed in, both the wire and the compressed air is being supplied to the tube 4 and the bulb becomes filled with the wire.

After the bulb I has been filled with the desired length of wire, the push button 2l is released and the disc 9 is disconnected from the friction disc I8 by the spring I'I and is immediately placed into contact with the friction-pad I Il, which stops the movement of the reel 'I and the supplying of wire to the tube I. Such releasing ofl the push button also causes the rod 23 to interrupt communication between the passageways 26 and 26', and thus interrupts the -supply of compressed air. Due to the disposition of the portion 25 on the rod 423, the supply of air continues until after the reel 1 has come to rest. Subsequently the bulb I is moved to the right and the wire is severed by means of a suitable cutter, indicated by II.

Various factors influence the operation, for

instance, the peripheral speed of the reel 1 the internal diameter and length of tube 4: the speed of the compressed air through' the tube; the diameter and length of .the end portion 8; as

well as the sizes of the bulb and of the neck external diameter of about 55 mm., 10 meters of portion II. These factors have to be selected with regard to the specic properties of the parti'cular wire used in order that there be no bunching or bundling of the wire while filling; i. e. that the density of' the filling be substantially equal throughout the bulb, and in addition, that the wire-filling elastically bears against the bulb wall and is immovable within the bulb.

For'example, in the case of a speclilc flash lamp having a content of about 100 c. c. and an wire having a diameter of 35 microns and conthe tube about 1.9 mm.; and the widened por--k tion l a diameter of about 13 mm. Under these over-pressure of two atmospheres, the wire moves at therateofaboutlxueterpersecond.v v

A 'flash lamp filled in this manner'is illustrated in 3 and comprises a bulb Il containing a wire filling Il Aof theabove-mentioned material. 'Ihe flash lamp Is provided with the two terminal wires 31-41 connected with one end to the terminals of base Il and carrying at their other'en'ds nection with specific examples, and in specific applications, I do not wish to be limited thereto,

but desire the appended claims to be construed as broadly as permissible in view oi the prior art.

What I claim is: 1. A method of introducing into a limited space an internally-strained wire of small mechanical strengthfcomprising the steps, transporting the wire into'the space by a stream of gas, and dis- Y trihuting the wire in a curled condition and as uniformly as possible throughout the space by the flow of gas therein.

, 2. A method of uniformly filling a hollow body closed except for a single aperture, with an in- ,ternally-strained wire of small mechanical strength, comprising the steps of carrying the wire through the aperture and into the hollow by a.' stream of gas leaving through another portion of the aperture, and distributing the wire in a curled condition and as uniformly as possible within the hollow by the recurrent ow of the gas therein.

3. A method of introducing into a limited space an internally-,strained wire having a perimeter of less than 300 microns, comprising the steps, transporting the wire into the space by a stream of gas, and distributing the wire in a curled condition and as uniformly as possible within the limited space by the recurrent flow of gas therein.

4. A method of introducing a fragile wire into a limited space, comprising the steps, imparting internal strains to the wire, transporting the strained wire in to' the space by means Vof a stream of gas, and distributing the wire in a curled condition.v and as uniformly as possible within the limited space -by the recurrent flow of gas therein.

5. A method of uniformly filling a flash lamp bulb with an internally-strained wire which is combustible with the emission of strong actinic light, comprising the steps, transporting thewire into the hollow of the bulb through a single opening by means of a stream of gas, and distributing the Iwire in a curled condition and as uniformly as possible within the hollow of the bulb by the recurrent flow of the gas therein.

6. Amethod of uniformly filling a hollow containerhaving a single aperture with an internally-strained fragile wire, comprising the .steps, introducing by means of a stream of a gas the wire through the aperture and into the hollow of the container, and luniformly distributing the wire in a coiled condition within the hollow by means of the recurrent iiow of the gas therein.

7. A method of introducing a fragile wire into a limited space, comprising the steps, introduce" ing the wire intoa tube emptying into said space, n

.tube toward the outlet opening, and means to `supply the wire to the wire-inlet opening.

9. A device for introducing a fragile wire into an internally-strained limited space by means of a stream 'of a gas, comprising a guide tube for the wire'and for the gas, said tube having inlet openings for the wi're and for the gas and en outlet opening for both the wireand the gas, said inlet openings being spaced back from said outlet opening, means to supply the wire to the wire-inlet opening. and means to supply the gas to the gas-inlet opening, the openings in the tube being so formed that the rate of iiow of the gas is reduced before andupon leaving the tube.

10. A device for introducing a fragile wire into a limited space by means of a stream of a gas, comprising av guide tube for the wire and for the Sas and having a. common outlet opening for the gas and wire, means to produce a flow oi' the gas through said tube toward the outlet opening, and means to supply the wire to the tube including means to internally strain the wire.

11. A device for introducing a fragile wire into a limitedspace by means oi' a gas, comprising a. guide tube for the wire and for the gas. said tube having inlet openings for the wire and for the f gas and an outlet opening for both the wire and the gas, means'to supply the wire to the wire'- inlet opening, and means to produce a iiow of the gas from the gas-inlet opening to the outlet opening including a devicev for controlling the ilow of the gas to the tube, said deviceA being so interconnected with said Wire-supplying means that the iiow of the gas is initiated before the supply oiwire starts, and is terminated after.

the supply of wire ceases.

CORNELIS KORVER..

Disclaimer l 2,115,423.-Uom'els Korver, Eindhoven, Netherlands. METHOD AND DEVICE non TRANsPoRTING WIRES.

Patent dated Apr. 26, 1938. Disclaimer filed June 9, 1950, by the assignee, Hartford National Baak and Trust Company.

Hereb makes dsclaimerof claims 1, 3, 4, 7,'8, 9, 10,

[ Gazette July 4, 1.950.]

and 11 of said patent.

.tube toward the outlet opening, and means to `supply the wire to the wire-inlet opening.

9. A device for introducing a fragile wire into an internally-strained limited space by means of a stream 'of a gas, comprising a guide tube for the wire'and for the gas, said tube having inlet openings for the wi're and for the gas and en outlet opening for both the wireand the gas, said inlet openings being spaced back from said outlet opening, means to supply the wire to the wire-inlet opening. and means to supply the gas to the gas-inlet opening, the openings in the tube being so formed that the rate of iiow of the gas is reduced before andupon leaving the tube.

10. A device for introducing a fragile wire into a limited space by means of a stream of a gas, comprising av guide tube for the wire and for the Sas and having a. common outlet opening for the gas and wire, means to produce a flow oi' the gas through said tube toward the outlet opening, and means to supply the wire to the tube including means to internally strain the wire.

11. A device for introducing a fragile wire into a limitedspace by means oi' a gas, comprising a. guide tube for the wire and for the gas. said tube having inlet openings for the wire and for the f gas and an outlet opening for both the wire and the gas, means'to supply the wire to the wire'- inlet opening, and means to produce a iiow of the gas from the gas-inlet opening to the outlet opening including a devicev for controlling the ilow of the gas to the tube, said deviceA being so interconnected with said Wire-supplying means that the iiow of the gas is initiated before the supply oiwire starts, and is terminated after.

the supply of wire ceases.

CORNELIS KORVER..

Disclaimer l 2,115,423.-Uom'els Korver, Eindhoven, Netherlands. METHOD AND DEVICE non TRANsPoRTING WIRES.

Patent dated Apr. 26, 1938. Disclaimer filed June 9, 1950, by the assignee, Hartford National Baak and Trust Company.

Hereb makes dsclaimerof claims 1, 3, 4, 7,'8, 9, 10,

[ Gazette July 4, 1.950.]

and 11 of said patent.

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