US2369155A - Method of conditioning wound strand bodies - Google Patents

Description

Feb. 13, 1945. n MARlNsKY Erm.

METHOD 0F CONDITIONING wUND .STRAND BODIES Filed Dec. 22, 1941 EJLULLIU SYN wmbwm mM# im www@ l .nanas ses. 13,1945

. ortica 7 METHOD OF CONDITIONING WOUND STRAND BODIES Davis Marinsky and Louis H. Morin, Bronx, N. Y..

Application December 22, 1941, Serial No. 423.934

9 Claims.

This invention relates to thread spools or bobbins such as used in connection withthe shuttles of sewing machines or devices of this type and kind supporting threads, lines, cords and the like. More particularly, the invention relates to the method of treating wound devices of this kind to maintain the strands of the spool llike body against displacement or against accidental or undesirable unwinding, while at the same time, adding lubricating properties to the strand. The novel features of the invention will be best understood from the following description when taken together with the accompanying drawing in which certain embodiments of the invention are disclosed and in which the separate parts are designated by suitable reference characters in each of the views, and in which:

Fig. l is a diagrammatic sectional view illustrating one mannerof carrying the method into effect.

Fig. 2.is a diagrammatic sectional plan view of the' structure as seen in Fig. 1 and,

Fig. 3 is a perspective view of a bobbin made according to the invention.

In the construction of spools, bobbins and like products of manufacture, it has been the common practice lto provide a core on which the particular strand is wound, and further to provide on the ends of the core or upon side surfaces of the wound strand body iianges for retaining the strands from displacement. In some instances, metal, paper or cardboard flanges have been used. In other instances, side faclngs 'cf plastic or similar materials have been employed. Still further, and as set' forth in our prior Patents 2,200,720 and 2,200,721 both of May 14, l1940, wax or paraffin film coatings have been applied to side surfaces of a wound strand body in form? ing film like retaining flangesl which wereremovedor broken down automatically in the unwinding oi' the strand.

It is the purpose of our present invention to provide a wound spool like body. such forexample as a bobbin, with means maintaining the strands of the body against accidental displacement or undesirable unwinding without the necessity of using side anges or other mediums to retain the strands against lateral displacement.

It is the furtherpurpose of our invention to provide a simple, economical and practical manner of producing products of the kind lunder consideration, as well as. to provide on the resulting strand removed from the spool or bobbin, lubricating properties.

In the accompanying drawing we have shown for illustrative purposes onev adaptation of the invention. Theillustrations in Figs. 1 and 2 of the drawing are entirely diagrammatic and serve only to indicate a method of procedure. In these figures, I0 represents a vat or tank containing, forexample. wax or parailin as indicated at Il. Anysuitable means, such for example as an electrie heater l2 will be employed for maintaining -the material I'I in a melted fluid state, the temperature being preferably controlled by a therl mostat or other control device indicated at l2.

In the construction shown, the vat I0 is arranged to move vertically in a support i4, the vat being preferably keyed to the support as indicated at i5.y Projecting centrally from the bottom of the vat is a plunger I6 having a tooth rack surface il adapted to be engaged by a tooth wheel I8 arranged upon a suitable shaft. I0.

Means will be provided to intermittently rotate this shaft in both directions to lower and raiseV the vat as later described.v

A vertically arranged shaft 20 is suitably supported, as seen at.2i, and secured to theupper end of the shaft is a cross beam 22, in the terminal ends of which are supported other vertical shafts 23 and 24. On the upper end of the shaft 20 is also arranged a gear 25 meshing with a drive gear '26 actuated byany suitable means to intermittently rotate the beam ,22 a half revolution, in order to successively bring the shafts 2l and centrally over the vat l0.

The upperl end of each shaft 23 and 24 has a friction disc 2l adapted to bebrought into mesh with a large friction drive wheel '28 rotatable by suitable means at high speed. The wheel 2l is' disposed above and at one side of the vat l0. Arranged opposite the vat I 0 'is a movable tray or pan 29. A plurality of spindles 30 are spaced l circumferentially on and protrude below the lower surface of heads 3| arrangedupon the lower ends of the shafts 2 3 and 24.

At this time, it will be understood that any desired number of the spindles 20 may bc arranged circumferential-ly of each headdepending entirelyupon the diameter of the bobbins or spools 32 mounted thereon with respect to the size of the heads Il.

In this connection, it will be also apparent vthat instead'of using a single cross beam 22, that a spider having several arms may be employed, inV which latter event the intermittent rotation of the head and the number of vat stations and applicator and ejector stations willy be correspondingly increased. 'I'he present illustration is sim. ply to show one possible adaptation of the inventionV and infact individual workpieces 32 may be produced. In our construction itis intended to revolve the entire head at high speeds, while maintaining the spindles 3B relatively stationary. In other adaptations of the invention, means may be provided for individually rotating the spindles.

For purposes of this description, the vat station will be termed the iluidapplicator station and the other station will be defined as the =eiec tor and mounting station, the latter station being shown at the right of Fig. 1. The ends of the beam 22 have long bearings 33 land slidably mounted'on these bearings are ejector discs 3d normally held in raised position by a spring 35 seating upon a nut 36.

`Arranged on each head 3l and at opposite sides of the spindles 3o is a pair of ejector pins 37. On these pins are arranged springs 3d which normally support the pins in raised position, and stop pins 39 are employed to limit upward movement of the pins 31. The heads d@ of the ment and unwinding, particularly the undesirable unwinding which takes place with ordinary threads when used on high speed sewing machines. Further the application of the wax or parafln coating also gives to the thread or strand a lubricating property which is desirable pins 3l are normally disposed adjacent the lower A 'surface of the disc 3e vso that upon the depression of this disc all of the pins 3l will be moved downwardly and all of the bobbins 32 .simultaneously ejected and dropped upon the tray or pan 29. A plunger di having a forked end it large enough to span the ends ci the arm 122 including the friction discs 21, is adapted te be' lowered into engagement with the disc ad as indicated in Fig. 1 and then further depressed in the ejection operation.

After the bobbins have been ejected onto the tray or pan 29, the pan is moved out oi aline-- ment with the lower portion of the head tl and a series of untreated bobbins are then applied to the spindles 30 by the operation of a feed plunger d3 arranged in a suitable guide dit, the head 3l being intermittently rotated to bring successive spindles into alinement with the plunger 4,3. Any suitable means may be provided to ac,- complish this result and in some instances intermittent rotation of the heads may be performed by hand.

The operations of ejecting the bobbins and then applying new bobbins on the spindles are performed while the other companion head 3i maintains all of the bobbins supported thereon in submerged position in the iiuid ii of the vat l0. After the bobbins have been submerged a sufficient length of time, the vat it is then partially lowered to maintain the bobbins 32 within the upper portion of the vat above the iiuid l@ therein. While in this position the head 3l is rotated atvhigh speed so that all surplus of the fluid will be removed from the bobbins through the action of centrifugal force. When this operation ha's been completed, the vat is loweredstill further to clear all of the bobbins supported on the head Si and by this time the other head will have all of the `untreated bobbins appliedto its spindles and the beam is then rotated to reverse the positions of the heads and the above cycle of operation is then again repeated.

- The bobbins picked upon the tray 29 may be delivered in any suitable means to a drying or cooling station for quickly setting the material employed, after which the bobbins may be packed in any desired manner for shipment.

It will be apparent that a bobbin or other wound strand body, processed in the manner dex i'lned, will have the strands thereof adhere to each other 'to a slight degree, suiilcient only to retain the strands against accidental displacestandpoint it will be understood that 'the method t:

herein deiined consists primarily in the complete submersion of a wound strand body in a suitable fluid, then in rotating the thread strand body at high speed to throw off all surplus of the material and then to fix the fluid material upon the strands in producing lthe resulting product,

It will be apparent that the strand body produced according to the method herein defined may be wound in any desired manner and many oi these bodies' have cross windings as int-,he bobbin illustrated. This type of winding maintains the strands against collapse or, displacement. With the present method of coating or impregnating the strands with the material which establishes a slight adhesion between contacting portions of across wound strand, the body is further maintained in its wound condition in the absence of retaining discs, whereas a light tension pull on the strand will readily unwind the same from the body and yet the strand is kept trom accidental unwinding.

Having fully described our invention, what we claim as new and desire to secure by Letters Patent, is:

a strand of thread cross wound on a core for retaining the thread against inadvertent unwinding and for retaining the mass of wound thread on the core in. the absence of retaining discs, which comprises completely submerging said body in a fluid, retaining the body in the iluid for a predetermined period -to permit. penetration of said fluid to all windings of said body, then removing the body from the fluid and revolving the body at high speed to dispense excess duid from the strand andY all uid intervening the strand windings by the action of centrifugal force, and then drying the body to harden the iiuid applied to the strand thereof, producing in the resulting wound body slight adhesion of the contacting intersecting portions only of the strand for maintaining the strand against inadvertent displacement and unwinding.

2. yAmethod of treating a bobbin body including a strand of thread crossvwound on a core for retaining the thread against inadvertent unwinding and forl retaining the mass of wound thread on the core in the absence of retaining discs;

which comprises completely submerglng the ving of the strand without ascenso adhesion between contacting portions only of adjacent strand windings. s

3. A method of treating a bobbin body including a strand of thread cross wound on a core for retaining the thread against inadvertent unwinding and for retaining the mass of wound thread on the core in the absence of retaining discs; which comprises the application of a fluid having slight adhesive properties to all of the wind-` ings of the strand on said body, removing vall fluid intervening -cross windings of the strand by action of centrifugal force and setting said fluid i unwinding and for retaining the wound thread mass on the core in the absence of retaining discs; which' -comprises the step of arranging two groups of bodies on movable mounting membe'rs in spaced relation to each other,successiv e lyl moving said members to a submerging station strands for maintaining the strands against inadvertent displacement and unwinding. I

6. A method of treating bobbin bodies each including` a strand of thread cross wound on a core for retaining the thread against inadvertent unwinding and for retaining the wound thread ymass on the core in the absence of retaining discs; which comprises the step of arranging two groups. of bodies on movable lmounting members in spaced relation to each other, successively,

moving said members to a submerging station and a dispensing and applicator station, simultaneously submerging all of the-strand bodies on one member at the first station in a fluid, then removing said bodies from the fluid and revolving'` said memberat high speed to dispense sur-v plus uid from said bodies by the' action of centrifugalforce, then-movingsaid member to the second station and the other member to the first station and simultaneously stripping the vprocessed bodies from said first member, applying unprocessed'bodies thereto while the bodies of the second member are processed at vthe first station, arranging theiiuid in avat and intermittently raising and lowering' said vat in con'- trolling the submersion of said bodies,fheating v the vat in controlling the temperature of the and a dispensing and applicator station, simultaneously submerging all of the strand bodies on one member at the first station in a fluid, thenf removing said bodies from the fluid and revolvingA said memberat high speed to dispense surplus fluid from said bodies by the action of 4centrifugal force, then moving said member to the second station and the other member to the first station and simultaneously stripping th.,- processed bodies from said first member, applying unprocessed bodies thereto while the bodies of the second member are processed at the first station, and then drying the thread bodies to harden the fluid applied to the strands thereof, producing in the resulting wound bodies slight ad'- hesion ofA the contacting intersecting portions only of the strands for maintaining the strands against inadvertent displacement and unwinding.

kone member at the first station in a nuid, thenremoving said bodies from the fluid and revolving said member at high speed to dispense surplus uid from said vbodies* by the action of centrifugal force, then moving said member to the' second station and the other member to the 4 first station and simultaneously strippingthe l processed bodies from said first member, applying unprocessed bodies thereto while the bodies station', arranging the fluid in a vat and intermittently raising and lowering said vat in con trolling the submersion of said bodies. andthen drying. the treated bodies to harden the fluid applied to the strandsl thereof, producing in the resulting wound bodies slightadhesion of the contacting intersecting' portions only of the 5. A method of treating bobbin bodies each fluid therein, and then drying the treated bodies to harden the fluid applied to the strands thereof, producing in the' resulting wound bodies slight adhesion of the contacting intersecting portions only of the strands for maintaining the strands against inadvertent displacement and unwinding.

7. The method of 'treating a wound strand body including a strand cross wound on a core for retaining the strandagainst inadvertent unwinding and lfor retaining the wound strand mass on the core in the absence of retaining discs; which comprises mounting a strand body on a rotatable member, moving a vat containing heated wax toward the body supported on said g member to completely submerge the lstrand thereof in the heated wax, maintaining the strand body in the wax a sufficient time to allow the wax to penetrate all of the strand windings of said body, then moving the vat away fromv said 4strand body to remove the body from the wax while maintaining the same within boundary Walls of the vat, then rotating said member at high speed to vdispense excess wax therefrom by the action of centrifugal force, and then drying the body thus treated to hardenthe wax in producing on'the resulting wound body slight adhesion vof the contacting intersecting portions only of the strand for maintaining the strand against inadvertent displacement and unwinding.

8. A method of treating bobbin bodies each including a strand of' thread cross wound on a core for .retaining the threadvagainst inadvertent unwinding and for retaining the wound thread of the second member are processed at the first mass on the core inthe absence of retaining discs; which comprises arranging a plurality of said bodies on amounting member, submerging all of said bodies in a fluid by movement of the member in the direction vof said fluid, retaining the bodies submerged inthe fluid for a predetermined period of time to permit penetration of said fluid to all lwindings of all of said bodies, then moving said member away'from said fluid in removing the bodies from the. fluid and revolving all of said bodies at high speed to remove excess fluid from the strand of each body and all nuid lintervening the strand windings of said bodies by the action of centrifugal force. then removing the bodies thus treated from said member, and then treating said bodies t0 set the fluid applied to the strands thereof to `produce be tween contacting portions of the windings of each body slight adhesion retaining the strands of said bodies against accidental `displacement and unwinding.

9. The method of treating a wound strand body including a. strand cross wound on a core for retaining the strand against inadvertent unwinding and for retaining. the wound strand mass on the core inthe absence of retaining discs; which comprises establishing two stations, namely a loading and unloading station and a submerging station, loading a' predetermined number of strand bodies on s. carrier at the loading station, then moving the carrier to the submerging station and submerging 'ali of the `4 assenso bodies on the carrier in heated wax at said submerging station, maintaining said bodies submerged in the wax sumciently to saturate all ot the windings of said bodies, then removing the 5 bodies from the heated wax while maintaining 'said bodies at said station and above the heated '-wax, then rotating the carrier at high speed to remove ali surplus wax from said bodies by the action of centrifugal force, then returning the 10 carrier to the rst named station and unloading i5 strand for maintaining the strand against inadvertent displacement and unwinding.

' DAVIS INSKY.

LOUIS H. MORIN.

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