US1370595A - Binder - Google Patents

Description

H. C. KRAUSE.

BlNDER.

APPLICATION FILED APR. 21, m.

1,370,595, Patented Mar. 8, 1921.

INVENTOR WITNESSES VATTIORNEY UNITED STATES PATENT OFFICE.

HUGO C. KRAUSE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW' JERSEY.

BINDER.

Application filed April 27, 1918.

To all whom it may concern Be it known that I, HUGO C. Knausn, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Binders, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to attachments for sewing machines known as binders.

It aims to provide a new and improved construction easily and inexpensively manufactured and eflicient in operation, being intended especially for handling bias material whose raw and ragged edges are turned in and concealed.

It consists essentially of separate and distinct folding portions formed in one piece out of sheet-metal and arranged in tandem with transverse slots for guiding the strip in its passage through the binder and for tensioning the strip and ironing its edge folds. A work-supporting apron is soldered to the binder which in turn is soldered to a supporting plate having a vertical edge-guiding wall adjacent and beyond the delivery end of the binder.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the binder, Fig. 2 a plan view and Fig. 3 a front elevation.

To a supporting plate 1 having elongated slots 2 through which clamping screws (not shown) are adapted to pass and adjustably secure the attachment in front of a needle 3, and having also a vertical wall i, a binder, indicated generally by the numeral 5, is soldered with its delivery end 6 slightly in rear of the edge-guiding portion 7 of the wall The binder proper is made in one piece by suitably blanking out a pi ce of sheet metal and bending it to form the edge-folding portion 8 and the body-folding portion 9. The edge-folding portion 8 is equipped with folding scrolls 10 and provided with a strip-- guiding slot 11. The body-folding portion 9 has its edges bent into folding scrolls 13 and is also bent intermediate its edges to fold the strip of binding into U-shape. A pair of slots 14 are also provided in the body-folding portion 9 and the strip of metal 15 between the slots is slightly sprung toward the reader as he views Fig. 1.

Secured to the binder, preferably by soldering to the lower of the scroll portions Specification of Letters Patent.

Fatented Mar. 8, 1921.

Serial No. 231,059.

13, is an apron 16 for supporting the body fabric to which the binding is to be applied. This apron is cut away as indicated at 17 so as not to interfere with the edge of the strip and a lip 18 extending upwardly from the apron is soldered to the back of the edge-folding portion 8.

. The binder is threaded up by passing the strip through the slot 11 toward the reader, thence under the scroll portions 10, thence through the right-hand slot 1 1 away from the reader, then through the left-hand slot 1 1 toward the reader and finally through the scroll portions 13. In operation, the slot 11 guides a strip centrally to the edge-folding portion 8 where its edges are folded and in passing through the slots 14 the folded edges are not only maintained folded but are ironed flat and necessarily at the same time tension is applied to the binding. From the slots 14. the strip passes into the body-folding portion 9 where it is folded intermediate its edges into U-shape as is well understood by those skilled in the art. After the binding leaves the binder it is directed to the needle by the edgeguiding wall 7.

Owing to the slight curvature of the binder between its receiving and delivery ends and consequent relative angular disposition of the edge-folding and body-folding portions 8 and 9, and also owing to the disposition of the tensioning and ironing slots 14, the device of the present invention folds and conceals the raw edges of a bias strip without the use of such auxiliaries as a banding wheel or a tension spring which have heretofore been employed. Thus an old result is accomplished in as good, if not better, way than heretofore with a much simpler construction whose operation once satisfactorily attained is certain to be reliably maintained.

Having thus set forth the nature of the invention, what I claim herein is 1. A onepiece single walled binder for bias material having a plurality of separate and distinct folding portions arranged in tandem and spaced apart and adapted to act successively on a strip to first fold its edges and then to fold it intermediate its edges into U-shape, a guiding and tensioning means for the strip between the separate folding portions, and means for attaching the binder to a sewing machine.

2. A binder for bias material having a plurality of separate and distinct folding portions arranged in tandem and adapted to act successively on a strip to fold it into U- shape with its raw edges turned and also having means acting on the strip between the folding portions for ironing the edge folds of and applying tension to the strip, and means for attaching the binder to a sewing machine.

3. A one-piece single walled binder for bias material having a plurality of separate and distinct folding portions arranged in tandem and spaced apart and adapted to act successively on a strip to fold it into U-shape with its raw edges turned and also having means for guiding the folded strip in its passage between the folding portions of the binder, and means for attaching the binder to a sewing machine.

4. A one-piece single walled binder for bias material having a plurality of separate and distinct folding portions arranged in tandem and adapted to act successively on a strip to first fold its edges and then to fold it intermediate its edges to U-shape, an edge guide integral with the binder and located beyond its delivery end, and means for attaching the binder to a sewing machine.

5. A binder having a plurality of separate and distinct folding portions arranged in tandem and adapted to act successively on a strip to first fold the edges and then fold the strip into U-shapc, means for ironing the strip in its passage between the folding portions of the binder, and means for attaching the binder to a sewing machine.

6. A one-piece single walled sheet-metal binder having separate and distinct edge and body folding portions arranged in tandem and provided with a plurality of slots, some between the folding portions and at least .one in advance .of the edge-folding portion for guiding the strip to the same, and means for attaching the binder to a sewing machine. V

In testimony whereof I have signed my name to this specification.

HUGO O. KRAUSE.

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