US47630A - Improvement in hem ming-guides - Google Patents

Description

i ming-guide embodying our invention.

UNrren STATES WM. GASKILL AND GEO. H. KNIGHT, 0F CINCINNATI, OHIO.

IMPROVEMENT IN HEMMlNG-GUIDES.

Specitication forming part of Letters Patent No. 47,630., dated May 9, 18(15.

To all whom t may concern:

Be it known that We, WILLYAM GASKILL and GEORGE H. KNIGHT, both of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in Hemming Guides or Scrolls for Sewing-Machines; and We do hereby dclare the following to be a full, clear, and exact description thereof, reference being. had to the accompanying drawings, making part of this specification.

Our invention relates to a provision upon a sewing-machine hemming-gnide for the automatic cross or counter crimping and smoothing out'ot' curled, creased, or wrinkled edges ot' Woven fabrics in the act of entering the scroll, so as to enable the hemmer to operate upon the most refractory material Without the necessity of previously iiattening its edge by a hot iron, or of resorting to the still more tedious expedient, familiar to seamstresses, of cross-crim pin g by hand.

Figure l is a perspective view of a hem- Fig. 2 represents our guide with a piece of cloth in position. Fig. 3 is an enlarged axial section of the guide, showing its peculiar crimping action on the cloth edge. Fig. 4f is designed to illustrate the process of hand-crimping. Fig. 5 lshows aV modification of our invention.

Our scroll consists of a double volute or pair of convoluted plates, A and B, united perma-` nently together at their interior con volutions, and converging toward their delivery ends in the manner shown. The said scroll is connected to the cloth-plate of a sewing-machine by means of suitable flange, C, screw D, and plateE, or hyanyother suitablemeansthat may accord with thestyle or requirements ofany speciticmachine. Werenderthescrollavailablefor a large class of refractory goods which are liable to have their edges improperly curled or creasedsuch as Kentucky jeans, duck, and other like fabrics-by providing the receiving end of the inner convolution, B,of the scroll with an axial stem, j', screw-threaded to fit an interiorly screw-threaded head or knob, F, which is abruptly shouldered at its end nearest the scroll, Whose outer convolution it slightly exceedsin diameter. l

VVheu required for use the hea-d AFis adjusted to such a longitudinal distance from the receiving end of the scroll as, without entirely closing the entrance thereof, to sharply crease or crimp the cloth transversely to its` edge, as represented in `Figs. 2 and 3, thus performing quickly and eectively by an auto4 matic agent work heretofore requiring the ngers or the smoothing-iron of the seamstress. (See Fig. 4.)

By adjusting the head F away from or near` y,

to the entrance of the scroll the instrument may be adapted for 4use with goods of any thickness and condition.

By adjusting the head F in proximityto the mouth of thescroll, suitable to the substance and nature ofthe goods, a double reverse crimp is imparted thereto in a direction transverse to any curl, crease, or reverted fold of its edge, as shown in Figs. 2 and 3.

In" using our scroll with goods of a less reexample, the head F may havea screwfthr` "ded stem enter-1n g acorrespondingly screW-threadf,

ed socket in the scroll; or the head may be seL cured to a smooth axial prolongation by means of a setscre\v,and may be of someyvhat diffen ent form,as globular, egg-formedmrlzoblon g, or for work ot' uniform substance andfquality the head may be permanently united to the"stein.

By constructing our head or knob F with an abrupt shoulder of. greater diameter than the outer scroll it is adapted to act with better effect in straightening any irregularities in the Y goods than previous devices in which the head has been made of smaller diameter than the scroll or Without the abrupt shoulder.

We claim herein as new and of` our inventionl. The provision at the receiving end of a hemming-scroll ot' theabruptlyshouldered axial head or knob F, of diameter greater than that of the outer convolution of the scroll for In testimony of which invention we hereunto the automatic cross-crimping of the cloth edge set our hands. iu the act of entering the scroll, substantially as Set forth. WILLIAM GASKILL.

GEO. H. KNIGHT.

2. A hemming-scroll provided at its receiving end with the screw-threaded axial prolon- Witnesses: c grationf, having the adjustable head 01 knob JAMES H. LAYMAN,

F, as set forth, or its equivalent. l F. MILLWARD.

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