US866006A - Strip-guide for elastic fabrics. - Google Patents

Description

} PATENTED SEPT. 17, 190?, A. H. DE V03. STRIP GUIDE FOR ELASTIC FABRICS.

APPLICATION FILED APR.4, 1906.

3 SHEETS-SHEET l.

PATENTED SEPT. 17, 1907..

I A. H. DE VOE. ,STRIP GUIDE BOB ELASTIC FABRICS.

APPLIOATIQN FILED APB..4.1906.

3 SHBETSSHBET 2.

UNITED STATES PATENT ori niin ALBERT HARRISON DE VOE, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

r Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed April 4, 1906. Serial No- 809,748.

To all whom it may concern Be it known that I, ALBERT HARRISON DE Von, a citizen of the United States, residing at Elizabeth, in

the county of Union and State of New Jersey, have invented certain new and useful Improvements inStrip Guides for Elastic Fabrics, of which the following is a Y specification, reference being had therein to the accompanying drawings. 7 V

This invention relates to improvements in sewing machine folding devices, and it has for its object to provide means whereby the edges of strips of knit goods maybe controlled for proper introduction into such edge-turning devices.

In'its preferred form, the present improvement comfmaterial relatively convex and concave members or edges of' the strip previously acted upon by the un curler. While the trip of knitted goods used in binding the raw edges of certain portions of articles of underwear formed of like material is usually wound upon spools or reels which are mounted upon or adjacent to the sewing machine by which it is applied to the garment, it is in practice impracticable to place such reel sufficiently close to the edge turning guide or binder to prevent the curling .ofits edges, but by'the employment of the present improvement in connection with such guide, the curled edges of the strip are so treated as to insure their proper introduction into the edgeturning device bywhich the strip is presented to the. stitch-forming mechanism in the desired relation to the garment. w

In the accompanying drawings, Figure l is a side elevation of the forward portion of a sewing machine provided with the present improvement, and Fig. 2 a plan of the same. Fig. 3 is a perspective view, and Fig. 4 a front end view of a binding guide embodying the improvement. Fig. 5 is a sectional elevation of the baseplatc'of the attachment. Fig. 6 is a perspective view, and Fig. 7 a rear end view of the binding guide in a somewhat simplified form.

The attachment is represented in Figs. 1 and 2 as applied to a Singer double-chain-stitch machine having the bed 1 and overhanging arm 2 .carrying the needlebar 3 with needle 4, the primary prcsser-foot 5 and feeding presser-foot 6. The bed-plate is offset at the right of the feed-line to form a depression in which is secured by means of fastening screws 7 the attachment base-plate 8 which is provided at its forward end with a steady-pin 9 having a disk washer 10 intermediate which and the head of such pin is interposed the spring 11, and is provided at itsrear end with a pair of upturned lips '12,provided with transverse notches 13 to receive projecting tongues 14 of the flat foot-piece 15 having at its forward end a longitudinal slot 16' embracing said steady-piir beneath the upwardly yielding washer 10 and flared at its forward end to admit the fixed stud 17 upon the base-plate 8.

The tubular binding guide 18 is of the usual 11'- shape, and is attached to the upturnedflange 19 of the foot-piece 15; It is provided along its edges with U- shaped edge-turning channels 20 and terminates at its forward or delivery end in an acute angle where it is provided with guide-hooks 21 to prevent the spreading of the binding strip when reversed for delivery crosswise of the attachment through the end of the central opening intermediate thebinding channels.

As represented in Figs. 1' to 4 inclusive, the arched inner convex body portion or" the guide extends rearwardly at 22 slightly beyond the outer concave portion,-

and merges into a substantially fiat backwardly-inclined portion 23 terminating in a cylindrical portion at24; and the rearward end of the portion 22 is spanned by a bridge-piece 25 conforming therewith in shapeand serving as a guard to confine the material upon the flattened portion 23. f

The uncurling device comprises a yoke-member 26 having substantially parallel -sides pivoted to and embracing the outer extremity of the guide 18and. having an intermediate curved operative portion formed with outer and inner edges 27 and 28 which are respectively convex and concave, a transverse guide bar 29 being secured within taid yoke-member between its curved operative portion and the end of the bind- 1 "side by means of a thumb-screw 31, whereby it may be clamped in any suitable position of adjustment inrelation to the binding guide.

The method of using the device'is as'followsz 'lfhe attachment is first adjusted in position by introducing the forward portion of its -foot-piece 15 beneath the yielding washer '10 and pressed forward within the.

' channel intermediate the upturned lips 12 until its lateral tongues 14 are enabled to enter the notches 13,"

by which the attachment is securely located in operative position with the longitudinal opening inter-i 1 mediate its binding channels substantially at the level of the raised portion of the sewing machine bed-plate,

as represented in Fig. 1. The binding tape a, which is ordinarily made with raw edges, is then led from the reel, upon which it is commonly wound, from some suitable position upon. or near the sewing machine,

first over the convex edge 27, then over the concave edge 28 and under the guide-hm 29 upon the inner member of the binder across the parts 24 and 23 and the part 22 or. the edges of which the corrcspo' 7 ing portions oi the binding strip enter the edge-turning channels by means of which they are turned. to form the selvage upon the binding a preparatory to stitching it to the fabric 12 as shown in Figs. 1 and The notion of the convex edge 27 is to enter the tubular space embraced by the natural curl of lhe binding strip, and that of the concave edge 28 is to mini in the central portion oi the binding distended, while-the ent r portions oi the latter serve to take up the slack 'svh'lch would otherwise he left by reason of the curveof the uncurling edge 27. The function of the cross-czar 29 is to maintain thestrip taut in its passage frozn the yoke-member 26 to the mouth of the binder, Li-'llile the peculiar shape of the adjacent portion of the binder is designed to insure the entrance into the lotof e binding strip fully distended while proscntconformity with the shape of the binding ire will he ohsewed, the edges of the strip Jrned over by the uncurling device in a reverse direction from that which it originally assumed, and ..."es are still further turned in the same directhe edge-turning channels of the binding guide, in order that their elasticity may serve to mainmil lshenl in contact throng n ut with the walls of such channel and in conformity therewith.

simplified iorrn ol the atta.(,:l1ment represented in Figs. 6 end 7, is similar 1 general constructive feeto that represented in the-preceding figures, hut '5 tllerelrozn in the omission of the bridge-piece nd the listened bnckwsi ly-inclined portion 1.3 of inner member of the binding guide; the arched ion 22 merging directly into the cylindrical end r ris mernhor. For isorics of hig ly elastic charr, ithes been found in "pr-act e desirzrhle to form reerw-cu-d end of the inner neznber of the guide wi all l abrupt curve or. the junction of th poras represented in F 3, in order that rip through the ottocluncnt and over P lol luv 1 e l tll nd to readily enter in proper condition the non i" r simplified hin lin '-guide represented o, whic 1 has the advantage, not only of siniof form out. of opposing less resistance to the in than the lorrn r.

strip-folding gu de shownund described herein is formed with a guiding channel which is slightly its receiving .1d and merges atits deliv .zU a; will oe observed that the uncurling; yoke 2b is in at 'ons disposed transversely of the deliver 'olvots I is the overlying inenihers of the chemo el at the delivery end. ol the rule. lt will he observed l at the yok 2 .3 crosses oi" rntersects'the medial plane of the guiding channel intermediate and substantially parallel with the overl ing members of the letter at its delivery end,

and therefore maintains a position in advance or in front of the receiving end of the strip'guidingchannel, thus avoiding any abrupt bends or sharp angles in the strip in its passage to the guide, so as to insure against any unnecessary distention oi the elastic material.

which W ould impair the ultimate condition of the Work by contraction alter the lOldlHfl and-stitching operations, the object ol the present improvement being to apply the strip to the margin oi the hodyfahric with as little distortion possible, consistent with the proper control of the some in presenting it for the stitching operation.

Although the present improvement isshown in the accompanying drawings as embodied in a sewing niochine strip folding device tor hindjng the edges 01' articles of knit-goods, it is evident that the some is readily adapted for other conditions involving the handling ol strips of elastic material, as in Winding upon supply reels the strips of such fabric when originally cut from the larger sheets preparatory to its use in connection I 1: serving machine, as before den lhed.

rile the present improvement is illustrated in. the companying drawings in tw of its approved lornis, it will be readily understood that the device is susceptible ol' considerable modification without depart ore from the spirit of the invention, the essential feature of which is the provision of the spaced convex.

portion disposed slightly below the raised work-plate,

in order to present the lower portion of the binding in proper relation to the under side or the fabric 5), but that the lateral tongues 14, in conjunction with the notches 13 in the upturned lips 32, not as a transverse pivotal connection with the sewing machine bed lor preventing eudwise and sidewise disp'm out 01' thereceiving' end of the guide While permitting the upward yield ol the delivery end in opposition to the spring 1]. so as to enable the attachment to accommodate itsoll to (r ss-scmns in the fabric to he stitched or to permit .rhng; to be drawn through the some by hand without excessive resistance when required, preparatory to starting; a binding operation.

Having time set lorth the nature of the invention, what I claim her 1s 1. The COl1ll lI121llOD with u strip-folding guide comprising :1 channel formed at its delivery end with spaced overmembers, 01' on uncurliuy, device provided with a paced rclzri' 'cly convex and concave opera- .iiod successively, in the order named. to rrzmged in advance of and in angular relzr 1 lo the delivery end of said guide and intersecting the ill gala-Inc oi the guiding channel.

P combination with :1 str .yulde, of an uncurling provided with a plurality of spaced relatively conedn'cs liz'rvlng heir end portions curved Into pnrnl planes at the extreme edges of the .1111 Hid present 0. successively, in the order nouxod. to the nlolc'ial in advance of the mouth of the guide.

member for engagement .with the material entering the l difierent angular adjustments in relation to the receiving guide, of an uncurling device provided with a plurality of spaced relatively convex and concave edges presented successively, in the order named, to the material in ad vnnce'of said transverse member of the guide.

4. The combination with a strip-guide terminating at its mouth or receiving end in acylindrical transverse member for engagement with the material entering the guide, of an uncurling device provided with a plurality of spaced relatively convex and concave edges presented successively, in the order named, to the material in advance of said transverse member of the guide, and a transverse straight slack-controlling rod interposed between said transverse member and the concave stripengaging edge, but offset from a direct line between the same and toward the plane of said convex strip-engaging edge.

5, The combination with a sewing machine binding guide having an arched inner member terminating at its receiving end in a transverse cylindrical portion into which the arched portion merges, of an uncurling device provided with a plurality of spaced relatively convex and concave edges presented successively, in the order named, to the material in advance of said transverse cylindrical portion of the guide.

6. The combination with a strip-folding guide comprising a channel formed at its delivery end with spaced overlying members, of an uncurling device comprising a yoke-member consisting of a curved bar having relatively convex and-concaveopposite edges adapted for we cessive engagement of the material entering the guide, and a pivotal connection intermediate said yoke-member and guide having its axis disposed transversely of the delivery end of said guide, whereby said yoke-member is adapted to be set at dliiferent angles in respect of the receiving end 'of said guide,

7. The combination with a strip-folding guide comprising a channel formed at its delivery end with spaced overlying members, of an uucurling device comprising a yokemember consisting of a curved bar having relatively convex and concave opposite edges adapted for successive engagement of the material entering the guide, and a pivotal end of the guide.

8. A strip-guide comprising a base-plate with means for securing it upon a suitable support and provided upon its upper face with a channel having parallel edges and lateral notches, and a tubular guide member provided with a foot-piece having parallel edges adapted to fit said channel of the base-plate and transverse tongues to enter the lateral notches of said channel, and means for detachably securing said foot-piece yieldingly seated upon the base-plate.

9. A strip-guide comprising a.base-p1ate with means for securing it upon a suitable support and having at one end a steady-pin and a washer surrounding the same and a spring for maintaining said washer seated yieldingly upon said plate, and having at its opposite end a pair of par allel-guide-lips with transverse notches, and a tubular guide member provided with a foot-piece having at one end a longitudinal slot to embrace said steady-pin be neath its surrounding washer, and at the other end lateral tongues to enter the transverse notches in said guidc-lipa 10. The combination with a sewing machine bed comprising a raised workplate, of a binding guide having one edge of its delivery end normally disposed slightly below the level of said work plate, and a foot by which said guide is sustained having its receiving end connected with the sewing machine frame by a pivotal joint to confine it from endwise and sidewise movement while permitting vertical movement and having at its delivery end means for yieldingly maintaining it in normal position while permitting it to yield vertically inrespect of said woric plate.

11. The combination with a strip-guide, of an uncurling device provided with a plurality of spaced relatively convex and concave edges presented successively, in the order named, to the strip, and a straight transverse slackcontrolling rod interposed between said uncurling device and the mouth at said guide.

In testimony whereof, I have signedmy name to this specification, in the presence of two subscribing witnesses.

, ALBERT HARRISON DE VOE,

Witnesses:

HENRY J. MILLER, HENRY A. KonuniuANN.

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