US1706819A - Darning attachment for sewing machines - Google Patents

Description

March 26, 1929. c. M. PRANGE DARNING ATTACHMENT FOR SEWING MACHINES Filed June 10, 1925 INVENTOR.

WFM ATTDRNEYS Patented Mar. 26, 1929 UNITED STATES CAROLINE M. PRANGE, OF INDIANAPOLIS, INDIANA.

DARNING ATTACHMENT FOR SEWING MACHINES.

Application filed June 10, 1925. Serial No. 36,119.

In order that darning may be accomplished by the use of an ordinary sewing machine it is necessary that the material be not firmly held upon the feed plate, in order that the material may be shifted in any direction by the operator. I

There are at the present time on the market a number of so-called darning attachments for sewing machines which involve the removal of the resser-toot and. the substitution. of another element in place thereof of such. character that, while the needle will be properly guided, the work will nevertheless be left free from the in fluence of the feed plate of the machine. Such devices are open to the objection that considerable time is required to remove the regular pressenfoot and to substitute the d arning device and also to the objection that ordinary sewing operations may not be resumed until the regular presser-foot has been restored.

The objectof my present invention is to provide a simple attachment, readily associable with most of the standard makes of sewing machines and of each character that the ordinary presser-foot may be so influenced, without removal or change of attachment, as to free the work from the influence of the feed plate, the device being of such character that it may be readily placed and removed and the function of the regular )resser-foot readily restored.

The accon'ipanying drawings ilh'lstrate my invention.

Fig. 1 is a perspective view of my im provement, the adjacent portions of a sewing machine being indicated in dotted lines;

F ig. 2 is a side elevation of my improvement;

Fig. 3 is an elevation, at right angles to the plane of Fig. 2, of the upper portion of the device shown in Fig. 2, and

Fig. 4 is a section, on an. exaggerated scale, on line H of Fig. 2.

In the drawings 10 indicates a metal plate one end 11 of which is turned. at right angles to the plane of the main body 10 and provided with an intermediate open ended slot 12, thus forming an end hook 13. The plate 10 is slotted at 14 and is slidingly mounted between the flanges 15 of a plate 16 which, at its lower end, is provided. with a pair oi oppositely directed open slots 17, 17 thus providing fingers 18, 18 adjacent the end of plate 16. Plate 16 carries a threzuled stud 19 which is projected through. slot 141: and provided with a clamping nut 20 the arrangement being such that the distance between lingers 18 and. finger 11 may be readily adjusted.

The slot 12 formed to receive a projection 25 commoi'ily found upon the heads 26 of most sewing machines and slots 17 are capable of receiving the usual lever 27 by means oi which the usual presser-i oot 28 of a sewing machine is raisedainl loi-vered.

In use plates 16 and. 10 will be relatively adjusted so that when either one of lingers 18 is slipped under the operating lever 27 the presser-foot 28 will be held up away from the work table just enough to tree the work, whatever its thickness, iron: the influence oi" the i eedcr plate 29.

Only one finger 18 is necessary but I provide two such fingers, one at a slightly greater distance from the end of the plate than the other so that, without changing the adjustment at stud 19, the device may be used for handling either thick or thin material beneath the presser-foot 28.

I claim as my invention:

1. As an article oi? manufacture, a damn ing attaclunent tor sewing machines co1nprising a pair of slidably associated plates one having at its top a hooked end for de tachable assmziation with the sewing machine head and the other at its end having transversely extending lingers at different distances from its end. for detachable association with the presser foot control.

2. As an article of n'lanui'acture, a darning attachment for sewing machines conunrising a pair oi? slidably associated plates one having a longitudinally extending slot, a bolt secured to the other plate and said. slot, and. a nut for said bolt for clamping the plates together, one of said plates having at its top a hooked end for detachable association with the sewing machine head and the other plate at its end having transversely extending ingers at dilierent distances from its end for detachable association with the presser foot control 3. As an article of in an ufacture, a darning attachment for sewing machines comprising a pairjof slidably as sociated plates one having one end turned ateright angles to the main body thereof and provided with an open ended slot to :form a hook for detachable association with the sewing machine head, and the other having a trangyersely extend'ing 'slot to form a transversely ex- CAROLINE M. PRANGE.

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