US1971118A - Hemmer - Google Patents

Description

Aug. 21, 1934. c. WMUELLER HEMMER Filed NOV. 18, 1932 ELE (Ittorneg Patented Aug. 21, 1934 PATENT caries 1,971,118;` 4 HEMMER Charles W. Mueller, St.V

Lewis Invisible Louis, Mo., assigner to Stitch Machine Company,

St. Louis, Mo., acorporation of Maine Application November 18, 1932, Serial No. 643,284

7 Claims.

This invention relates to new and useful improvements in hemmers generally, although more particularly to a hemmer of the scroll and cone type for forming an extremely narrow hem.

` Considerable diinculty has heretofore been experienced with cone hemmers due to the clogging of the delivery end of the hemmer when hemming fabrics of a weight greater than the hemmer was originally intended to receive, or in passing seamed fabrics through the hemmer.

The principal object of the present invention is therefore to provide a cone hemmer with an expansible nose or delivery end whereby fabrics of different weights as Well as seamed fabrics may be readily folded without clogging the hemmer.

Another object of the invention lies in the provision of an adjustable edge guide for the hemmer whereby a predetermined amount of fabric `'may be constantly turned in to form the hem.

With these and other objects in view which will more fully appear, the nature of the invention will be more clearly understood by following the description, the appended claims, and the several views illustrated in the accompanying drawlng.

In the drawing:-

Figure 1 is a top plan view of my invention showing a fabric having a cross-seam being passed therethrough,

Figure 2 is a bottom plan view of the hemmer,

Figure 3 is a front elevation of the hemmer,

Figure 4 is a rear elevation of the hemmer,

Figure 5 is a side View of the hemmer,

Figure 6 is a perspective view of the edge guide,

Figure 7 is an enlarged and somewhat diagrammatic cross section of a seamed hem folded by my invention,

Figure 8 is a bottom plan view of the hemmer nose with the downwardly expansible portion removed, and

Figure 9 is a perspective view of the downwardly expansible portion of the hemmer.

Like reference numerals designate corresponding parts throughout the several figures of the drawing.

Referring to the accompanying drawing, the hemmer A includes a base plate 5 to which is secured an attaching arm 6. The base plate 5 is turned at one edge to form a coniform scroll a having a mouth b and a restricted nose c. A frusto-conical core d which is centrally disposed within the scroll, extends inwardly from the mouth b and terminates short of the nose c. The core d is supported by a guide flange 7 which is disposed above the base plate 5 and is secured to the edge of the scroll. The hemmer thus far described is of the conventional form. Inftheuse of hemmers of this type, considerable diiliculty has been' experienced when attempting to fold extremely narrow hems owing to the folded fabric crowding or cloggingthe small nose particularly when a heavy fabric or a fabric witha cross seam is being folded. Y.

I have therefore provided a hemmer with an expansible nose which will relieve such clogging and allow the formation of extremely narrow hems regardless of the fact that a heavier fabric or a cross seamed `fabric is employed'.

To this end, thescroll a is formed on its upper side with a longitudinal slit 8 which extends from the delivery end of the nose c toward the mouth b, but terminates short of said mouth. The lower part of the nose is cut away to form a transverse edge 9 and a'longitudinal edge 10, and the scroll is formed with a longitudinal slit 11 which is alined with the longitudinal edge 10. Thus between the longitudinal edge 10 and the slit 8, the nose is formed into an upwardly expansible tongue 12 which is located above the cut away portion. A downwardly expansible nose portion 13, which fits the cut away portion, is provided with an attaching spring arm 14 secured by solder to the under face of the base 5. It will thus be observed that I have formed the nose into upwardly and downwardly or oppositely disposed expansible portions or tongues which will permit the free passage of an extremely narrow hem 15 in a fabric 16 which may be either light or heavy or which may or may not be formed with a cross seam 17.

Attached to the mouth end of the core d is an edge guide X which includes an upright arm 18, a rearwardly extending arm 19 which terminates in a ngerpiece 20, and a split attaching ring 21 at the lower end of the upright arm 18. An attached screw 22 passes through the split ring 21 and is threadably engaged in the mouth end of the core d. One of the arms of the split ring 21 is bent outwardly to form a resultant spring or frictional connection between the core and the screw head, whereby the guide may be readily adjusted about the screw and frictionally retained in any position of adjustment. The arm 18 extends upwardly above the top of the scroll and serves as an edge guide for the fabric to maintain a uniform margin to be inturned, and by having the arm 19 extend rearwardly and overlap the scroll, the edge of the fabric is held from working in between the arm 18 and the scroll. The hem thus formed is l Iii" secured to the body fabric by a line of blind stitches indicated diagrammatically at 23 in Figure "1.

I claim:-

1. A hemmer including a coniform edge turning scroll having an entrant mouth and a restricted outlet nose, the nose including an upper portion having a longitudinally extending slot extending through the outlet end of the nose, and a downwardly expansible portion.

2. A hemmer including a coniform edge turning scroll having an entrant mouth, a restricted outlet nose, and an enclosed core terminating short of the delivery end of the outlet nose, said nose including a downwardly expansible portion overlapping the delivery end of the core and forming the lower part of the delivery end of the nose.

3. A hemmer including a coniform edge turning scroll having an entrant mouth, a restricted outlet nose, an enclosed core terminating short of the delivery end of the outlet nose, and an edge-guide seouredto the entrant end of the core and extending radially and outwardly beyond the scroll.

4. A hemmer including a coniorm edge turning scroll having an entrant mouth, a restricted outlet nose, an enclosed core terminating short of the delivery end of the outlet nose, and an edgeguide adjustably secured to the entrant end of the core and extending radially and outwardly beyond the scroll, the end of the guide extending over the scroll and serving as a hand-piece for adjusting the guide.

5. A hemmer including a coniform edge turning scroll having an entrant mouth, a restricted outlet nose, an enclosed core terminating short of the delivery end of the outlet nose, and an edge-guide pivotally mounted on the entrant end of the core and extending radially and outwardly beyond the scroll.

V 6. A hemmer including a coniform edge turning scroll having an entrant mouth, a restricted outlet nose, an enclosed core terminating short of the delivery end of the outlet nose, and an edge-guide pivotally mounted on the entrant end of the core Yand extending outwardly beyond the scroll, said guide being attached to the core through the rnedium of a spring loop and a screw passing through the loop into the core.

'7. A hemmer including a ooniforrn edge turning scroll having an entrant mouth and a restricted outlet nose, said nose being formed with longitudinal slits forming therebetween an outwardly yieldable tongue, said nose being also formed opposite said tongue with a cut away portion, and an outwardly yieldable nose section iitting said cut away portion.

CHARLES W. MUELLER..

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