US2369592A - Method of treating bobbins - Google Patents

Description

Feb, 13, 1945. D. 'MARlNsKY ErAL VMETHOD oF TREATING Boms Filed. .April 5,' 194s f www .MNR NN y receiver.

Patented Feb. is, 194s uNrrr-:o STATES PATENT orsics This invention relates to what iscommonly referred to as bobblns used with the shuttles of sewing machines or devicesof this type and kindV supporting threads, lines, cord and the like. llilore particularly. the invention relates to the method of treating wounddevices oi!v this kind so as to establish between contacting strands of the device an .adhesion sumcient to maintain the strands against accidental displacement or undesirable unwinding while at the same time facilitating `i'orceable removal of the strands, and further to adding. lubricating properties to the strand.

The novelfeatures o! the invention willl be u maintaining the wax ii at a desired temperature.

understood from the following. description when taken together with the accompanying drawing,

Fig. l is a diagrammatic sectional view indi- :ating in dotted lines the submersion oi.' a plu.

rality v,of bobbins, and in full lines the step oi' rotatlns the bobbin basket or container in the removal of surplus coating material therefrom: and

` Fig.'2 is a diagrammatic sectional view showingl the step'of dispensing the coated bobbins onto a In the construction of bobbins, spools-andv "other wound strand products of the type and kind under consideration, particularly as taught in our prior application 423,934 as well as in our A, Eatents 2,200,720 and 2,200,721-, it has been the practice Yto mount Athe bobbins or other devices on -spindlcil. prior to partially or wholly submerging the saine ina coating material, and then to rotate these spindles to remove surplus coat- .ing or-satniating material. Thisfmethod of proao-.fdle 'il is riveted, as seenat Il. The bar 20 carcedure.hasifbeen objectionable primarily'. from the standpoliitotl the -loss' of time in'niounting the other devices on the spindles.

'To pvercwe the objectionable features to 'these known methods. we have conceived a meth-e od which consists in simpiyzmounting a pluralityl vof bobbins\ or other devices in what misht be termed a basket of open work material. nien we lbmerlethe ballet bobbinl therein lll a.coatmg='oi;g,penetrating' solution, -allowing the lame to iilr a'predetermined period ottime. .Then is raised from the solution and athigh speedlwhile still'contained within thevlt or container for said solution, to remove lilrpluscoatlngor saturatingmathe eetieaefeenu- I employee,

usal force. Then we automatically dump, dispense or otherwise remove the processed bobbins from the basket, after which the basket ls am illled and the above process` repeated. With this I. method. large quantities er bobbing or other def vices can be speedily coated or otherwise treated with wax or other materials. A l

. In the accompanying drawing isdiagrammati.- cally illustrated one procedure-in carryln out 5 the method,`in which Ill represents a vat or tank" in which is placed the coating o r saturatlng solution il tobe employed. For purposes of this description the use Aof wax `or parailln will be described. At I2 is. shown a-suitable heater for It will appear that the uPPeledse of the vatk Il fha; an inturned ilange portion I3 to prevent displacement -oI the wax. particularly in the vcen-` triiugal discharge,later described.

- understood, however, that apparatus such' as genik erally indicated in application 423,934 can be employed, modined to the necessary-.extent in dea ling with the diilerent structure disclosed in the .present case. At 'I4 is shown aspindle which f carriesat the lower end thereof a basket or other so open work container I-i. This basket may comprise perforated material or may be in the form f; "'of a wire mesh construction.-

,11. The basket .Il has a circular peripheral wall "with ,openings I'I therein, and this wall in- Qad cludes an lnturned top flange portion Il, which jleave'sa largeadmisslon opening IlV in the top 4of the basket. Transversing the lower edge porgtion of the wall` II is a substantially triangular "bar 20, to the central portion of which the spin- .ries at opposite sides thereof pintle bearings 22 'in which are mounted pintle pins 23, which also throughbearinge Nonhinged bottom plates l,foming the bottoms of the basket.

45 The bottom plates :ze 'which mim emo se termed "drop doors" 'have openings Il. to allow line position indioatedin Fig, l.v Thebott'om platesor doors Il include centrally of the outer eil'lesthereoi clipbends Il adapted to engage projections!! on the wall Il to retain the bottoms in Atthis time. ltwlll be linde!" 'stoodthstnnytrpeotseeuringmeanscanbe and in some instances'positive-medumped into the pan or receptacle 29.

chanical means may be employed to operate the doors 25 to move the same into open and closed position.

In Fig. 2 of the drawing the basket is shown in raised position above the vat or container I0, with the doors 25 in open position, and with a pan or other receptacle 29 arranged beneathv the raised basket, so that the bobbins 30 may be After this operation the basket may be raised still further to remove the pan 29, the doors 25 moved into closed position, and an additional supply of bobbins inserted in the basket through the opening I9.

The steps of the method of coating and saturating bobbins will be understood when taken in connection with the diagrammatic illustrations in the drawing and the following statement. Starting with the lling of the basket l5 with the required numberof bobbins, the basket with the bobbins therein is then lowered into the dotted line position shown in Fig. 1, and retained in this position for a predetermined period of time which may be automatically controlled in any desired manner. In this connection it will be understood that the time period will vary with products of diiferent types and kinds and with different coating and saturating materials employed. I

When the time for coating or saturation has expired, the basket I5 is raised into the full line position shown in Fig. l, after which the shaft or spindle I4 is rotated at high speed and centrifugal force will operateto discharge all surplus material from the bobbins. Here again, this step in the operation or method of procedure will be controlled to insure removal of all free or excess coating material.

Having completed the spinning or centrifugal discharge of surplus wax, the basket is now raised suiiiciently to permit insertion of the pan 29 there beneath, after which the two doors 25 -will be dropped to discharge the bobbins into the pan 29, after which the basket is raised to provide free removal of the pan, and the doors 25 are then closed' and the above operation repeated.

As taught in the application hereinbefore identiiied, the .dispensing and re-lling of the basket placement and unwlnding, thus eliminating the.

necessity of using conventional spools having side wall portions for holding the strands against displacement. The uniting of crossed strands is not sufficient, however, to prevent normal withdrawal of the thread or strand in the use of the bobbins.

It vwill be understood that thev size, shape and construction of the basket will depend entirely upon the type and kind of wound thread or strand product to be processed according to the invention. Where conventional small bobbins are being processed, large quantities of these bobbins can be arranged in a comparatively small basket. In the high speed rotation of the basket for removal of surplus coating material, the bobbins will be maintained adjacent the peripheral wall I6 of the basket and will also be shifted to various positions from horizontal to vertical. The bobbins arranged thus will dump readily onto the receptacle or pan 29 when the doors 25 are lowered. 'I'he conical top of the bar 20 will also aid in this operation.

While our process is adaptable for use in the treatment of strand bodies of any kind or class, regardless of how the strands are wound thereon, where such bodies include the cross wound strands, these strands establish what might be considered points of contact, and these will adhere in maintaining the accidental unwinding of the strands while at the same time permitting unwinding of the strands in the use of the bobbin.

It will be understood that in the process of treating the bobbins or other bodies with was or other material which is heated, deiinite control will be provided to maintain the desired temperature during operating conditions.v At the same time a deiinite control is provided for the time of submersion of the bobbins in the body of wax, as will also be true of the time period of rotation of the basket'in dispensing of surplus wax by action of centrifugal force. These time controls are important, particularly from the standpoint of automatic high speed of production of bobbins and other bodies, according to the invention, and particularly from the standpoint of producing all automatic operations as much as possible. Furthermore, lby definitely controlling the time period of the diierent steps of the method, uniformity can be established and maintained in the resulting products to satisfy predetermined conditions. Where different conditions are required to suit different products or uses of the products, the control time periods may be varied in all or some of the steps of the method.

Having fully described our invention, what we clallim as new and desire to secure by Letters Paten is: i

' 1. A method of treating bobbin bodies 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 ofretaining discs, which comprises the steps of arranging groups of bodies freely in an open work supporting member, submerging said member with said bodies therein in a fluid, maintaining the bodies in the fluid for a predetermined period of, time to saturate all of the windings of the strand on each of said bodies, then removing the member and said bodies from the iluid and rotating said member at high speed with a resultant movement of the bodies relatively to and toward the peripheral Vwall of the work supporting member to dispense surplus fluid from the strand windings of said bodies and all iiuid intervening the strand windings through said member by subjecting said bodies as a whole to the action of centrifugal force, then removing all of the bodies collectively and simultaneously from said member, and then drying said bodies to`harden the fluid applied to the strands thereof, producing in the resulting wound bodies slight adhesion between contacting portions only of adjacent strandkwindings preventing accidental displacement and inadvertent unwinding of the windings from said bodies.

2. A method of treating bobbin `bodies 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 steps of mounting a plurality of said bodies freely in an open work basket supported-on a rotatable spindle, submerging the basket with the bodies therein in wax heated at a predetermined temperature, maintaining the i bodies in the heated wax for a predetermined vening the windings by subjecting said bodies as a whole to the action of centrifugal force. controlling the time of rotation of the spindle to insure removal of the wax, then removing all of the bodies collectively and simultaneously from said basket, and then drying said bodies to harden the wax applied to the strands thereof, producing` in the resulting wound bodies slight adhesion between contacting portions only of adjacent strand windings preventing accidental displacement and-'- inadvertent unwlnding of the windings from said bodies.

, 3. A method of treating bobbin bodies includins a strand oi 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 retainin discs. which comprises heating a large quantity of wax to a predetermined and controlled temperature. submerging a plurality of bobbins freely arranged in an open work container in said heated wax, controlling the time period of submersion of the bobbins in the wax to saturate all of the windings of the thread on each of said bobbins, then removing the bobbins and said container vfrom the wax and rotating the container at high Speed surplus wax iromrthe bobblns by subjecting said bodies as a whole to the action of centrifugal force, then removing all of the bobbins simultaneously vfrom said container. and then drying the bobbins to set the wax on the threads thereof so as to establish slight adhesion between contacting portions only of adjacent thread windings on each bobbin to retain Vthe thread against accidental displacement and inadvertent unwinding.

4. A method of `treating bobbin bodies including a `strand of thread crosswound on a core for 'retaining the thread 'against inadvertent unwind'- ing and for retaining the mass of wound thread on the core in the absence of retaining discs, which comprises establishing two stations, namely a loading 'and unloading station and a submerging station, depositing a predetermined number of strand bodies freely in a basket type carrier at the loading station, then moving the carrier to the submerging station and submerging all of the bodies in thecarrier in heated wax at said submerging station. maintaining said bodies submerged in the wa'x sumciently to saturate all of the windings of said bodies, then moving-the carrier to remove the bodies from the heated wax while maintaining said bodiesat said station and` abovethe heated wax, then rotating the carrier at high speed with al resultant movement of the bodies relatively to and toward the peripheral wall of the carrier to remove all surplus waxl from said bodies' by subjecting said bodies as a whole to the `action of centrifugal force, then returning o the carrier to the first named station and unloading the treated bodies simultaneously from the basket of said carrier, and then drying said bodies to harden the wax and producing in the resulting bodies slight adhesion between contacting portions only of the windings on said bodies prevent- 40 ing accidental displacement and inadvertent unfor a controlled period o! time with a resultant movement of the-bodies relatively'to andtoward winding of the strands from said bodies.

mivrsl' mamen. wma n. Moam.

Images