US954990A - Cloth-presser for sewing-machines. - Google Patents

Description

D. NOBLE. CLOTH PRESSSER FOR SEWING MACHINES.

APPLICATION FILED OCT. 21,1908.

Patented Apr. 12, 1910.

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.HYOHNEY UNITED STATES PATENT OFFICE.

' DONALD NOBLE, F BRIDGEIEORT,' CONNECTICUT, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, A CORPORATION OF NEW JERSEY.

CLOTH-PRESSER FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented Apr. 12, 1910.

To all whom it may concern;

Be it known that I, DONALD NOBLE, a subject of the King of Great Britain, residin at Bridgeport, in the county of Fairfield an State of Connecticut, have invented certain new and useful Improvements in Cloth- Pressers for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in sewing machines and has to do more particularly with such machines as are employed for ornamental stitching wherein the eed of the material is manually controlled in directions inclined to each other or in curvilinear directions.

Itis well understood that in the construction of ornamental stitching machines, such, for instance, as the one illustrated and described in U. S. Patent No. 821,233, dated May 22, 1906, to .F. Gegauf, to which class of machines my invention is applicable, the means employed for controlling the feed of the material include a comparatively large circular clothresser (substantially such as is designated by the numeral in the above referred to patent} which is resiliently depressed and contro led to release its pressure upon the material at such time" as the material is being advanced under the needle.

The object of my invention is to provide a cloth-Presser with means for holdlng the material taut beneath theresscr-foot and thereby preventing it from becoming drawn or wrinkled through the action of the stitchforming and cloth-feeding mechanism, such drawn or wrinkled condltion having been the difliculty experienced in connect-ion with the use of the earlier forms of construction when operating upon materials of soft light texture.

Referring to the accompanying drawings, in the several figures of which like parts are similarly designated, Figure 1 is a top plan view of my improved clothresser; Fig. 2, a view in cross section of Fig. 1; Fig. 3, a top plan view of the flexible cloth-presser foot; and Fig. 4, a view in cross section of Fig. 3.

1 is the cloth-presser provided with the usual attaching arm 2, and 3 is the clothpresser flange on which is elastically mounted the flexible ring 4 which is preferably composed of rubber. The ring 4 is of planoconvex form and is illustrated in Figs. 3 and 4 as occupying its normal form or shape, but when it is elastically applied to the flange 3, such application being effected by constructing the flange slightly larger in diameter than the opening in the ring, the latter assumes the position and form illustrated in Figs. 1 and 2, and when the clothresser is reslliently forced down upon the material the ring is caused to again assume substantially the form illustrated in Figs. 3 and 4, and as the fiat surface 5 of the ring is forced u against the wall 6 the material is stretche in every direction, owing to the ring being forced to a position of increased diameter.

It will be readily understood that the lano-convex form of the ring 4 is essential or securing the greatest degree of utility but said form might be slightly changed without seriously interfering with the elastic control exerted by said ring. For instance, if the surface 5 were slightly convexed or concaved, the tendency of the ring when applied to the flange would still be to assume approximately the form illustrated in Fig. 2, and its elastic control would not entirely disappear unless its opposite surfaces were convexed to the same extent or concaved sufficiently to endanger the stability of the ring; accordingly, I do not wish to be understood as limiting my invention in this respect, as a ring of substantially lano-convex form might possess sufficient utility to meet the requirements of many classes of production.

What I claim is 2-- A cloth-presscr for sewing machines comprising a main portion rovided with a flange upon which is elastically mounted a flexible ring of substantially lano-convex form, said ring being mounted so as to present its convex surface to the material eing stitched.

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

DONALD 'NOBLE. Witnesses:

Amara M. Domrm,

Hmmn'r J. Doummnr.

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