USRE13154E - Device fob singeing textile fabrics - Google Patents

Description

G. GIN. --nEvIcB Fon SINGBING TEXTILE Fumes.

.LPPLIUATIIOH IILED JULY 1B. 1910. y

Reissued 0t. 4,1910.

. candescence, a ver -UiviTED STATES PATENT oinioia.`

GUSTAVE GIN, OF PARIS,

DEVICE FOR SINGEINGu-TEXTILE FABRICS.

Specification of Reigsiied Letters Patent. Reissued Oct, 4, 1910,

Original No. 962,828, dated .Tune 28, 1910, Serial No. 424,174. Application for reissue led July 16, 1910. Serial No. 572,383.

To all whom it may concern:

Be it known that I, GUsTAvE GIN, of Paris, France, a citizen of the French Reublic, have invented certain new and use-.

ul- Improvements in Devices for Singeing Textile Fabrics, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure l is a diagrammatic perspective view ofone form of said devices; Fig. 2 a plan of Fig. 1; Fig. 3 a diagrammatic crosssection; p

As well known, the singeing of textile fabrics involves removal, by superficial combustion, of the therefrom projecting pile, nap, or down. -Attempts have been made to so singe such fabrics by moving them in proximity to metallic wires, or bars, heated by electricity. Such wires, being of relatively small cross-section, have proved unable to supply sufficient-heat for rapid singeying. Said bars, of relatively much greater cross-section, require, to bring them to inintensive current. The resistance of such ars being small, compels resort to generators of low tension, involving the use of conductors of considerable section and expensive connections.

I avoid the disadvantages referred to by `using a pair ofbars constituting art of the secondary circuit of an linduction transformer whose primary circuit is supplied by a current .of normal tension.

Referring now to the drawin s, a are the heating bars, com osed prefera ly of comparatively infusib e metal, suoli as nickel or its alloys, these bars being connected b the extension b, disposed -to pass throug electro-magnetic core c, another portion of which is wound with the riinary coil d, connected with source of e ectrical energy a, the said bars a thus constituting art of the secondary circuit of the trans ormer.

e is a movable electro-'conducting member contacting with each of said bars to complete the secondary circuit.

f is a spring, disposed to upon the bars and maintain their rectilinearity during contraction and expansion due to variations in temperature.

It will be observed that those ortions ,.a of the secondary more proximate y disposed relatively to the'core are ofv considerably greater cross-section than those parts constituting the singeing bars a, whereby, owing exert tension to their resulting increased resistance, I am enabled to raise the latter to the requiredv high temperatures without unduly heating the primary.

Fig. 3 illustrates thebars a surrounded in part by refractory material 'r whereby loss of heat by radiation is diminished.

-An important feature of my present -invention is theconnecting bridge oi' movable conducting member e, by-means of which I am enabled to limit the heated extent of s aid bars. It will be understood that the fabrics are usually moved over the bars in contactv with latter, whereby considerable heat is withdrawn from the ybars and' their temperature, at the portions so contacted, kept down sufficiently to prevent unduly burning the fabric. Those portions of theibars located outside of said zone of contact by the fabric retain much higher tem eratures than those parts so contacted, with t e result that, except for said movable member, the selvages of the fabric would be likely to be undesirably burned, as the fabric sways sli htly in its passage, by contact with the out ying undesirably heated portions of the bars. By imparting movability tothe said brid e e, I am enabled to regulate the length o the heated (portions of the bars to suit the varying wi ths of fabric singed, whereby the aforesaid difficulty is obviated.

The required movable support may be imparted' to the bridge e in any convenient manner, as for instance, by providing it with lateral vflanges m, adapted to be received, and slide in grooves d on the inner sides-of bars a, thus permitting bridge e to be pushed manually by the operator to the exact position required. To facilitate such manual operation, a handle L, or other y equivalentdevice, maybe annexed to` said bridge e.

The operation of the device will be readily understood. The. movable member or conducting bridge e being moved, adjusted and left in place to lcorrespond with the width of the particular fabric to. be treated and 4the current turned on, the fabric is reeled l rapidly over and preferably in contact with the bars, asdiao'rammatically illustrated in Fig. 3, the reels tbeing indicated by the dotted circles and the fabric `by these and the straightA dotted lines, such procedure-being too well understood by those skilled in the art to require more detailed description here.

said bars so heated.

The duplication of the singeing bars, as shown, facilitates, enhances and renders more thorough the singeing required.

Having now described my invention, what I claim as new and' desire to secure by Letters Patent is the following, viz :f-

l. A device for singeing textile fabrics comprising a pair of electrically heated bars and, contacting therewith, a movable conducting member to limit the extent of said bars so heated.

2. A device for singeing textile fabrics comprising a pair of electrically heated singeing bars constituting vpart of the secondary circuit of an induction transformer and, contacting With said bars, a movable conducting member to limit the extent of 3. A device for sing-eing textile fabrics comprising a pair of electrically heated sinlgeing bars constituting part ofthe secon ary circuit .of an induction transformer and of smaller cross section than other parts of said secondary andycontacting With said bars, a movable conducting member to limit the extent of said bars so heated.

4. A device for singeing textile fabrics comprising a pairl of electrically heated eing bars constituting part of the ysec- .ary circuit of an induction transformer, both said bars 'having equally extensive and parallel operative portions supported and disposed to simultaneously singe said fabrics substantiallyas described.

5. A- device for singeing textile fabrics comprising a pair of eiectrically heated singcing bars constituting part of the conductor of the secondarv circuit of an indue tion transformer',A said bars losing of cross-section than other parts or" s ductor.

Witnesses A DEAN M. MASON, JACQUES Manent...

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