US402584A - Attachment-holder for sewing-machines - Google Patents

Description

(No Model.)

J. M. GRIEST.

v ATTAGHMENT HOLDER FOB. SEWING MACHINES.' Ne. 402.584

" Patented May' 7; 1889.

UNITED ST TES PATEN'E OFF CE.

JOHN M. GRIEST,

OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY; OF NEW JERSEY.

ATTACHMENT-HOLDER FOR SEWlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 402584, dated May '7, 1889. Application filed December 27, 1887. Serial Nd. %9,089. (No model.)

To all whom 't may concerns Be it known that I, JOHN M. GRIEST, a citizen of the United States, residing at Chicago, in -the County of Cook and State of Illinois, have invented certain'new and useful Im provements in Sewing-ltachne Attachment- Holders, of which the following is a specification, reference being had thercin to the aooompanying drawings. o It is the usual practice to secure sewingmachine attachments-such as guides, hemmers, binders, tuck markers, &c--to the work-plate of the machine; but this practice is objectionable, for the reason that the attachments are liable to mar or wear away the ornamental japanned finish of the work-plate, so that when a new machine has been but slightly used in exhibiting it in the sales-room the work-plate becomes more or less scratchedi zo or marred, and the machine thus presents the* appearance of a second-hand one. Furthermore, the attachments, when attached to the work-plate, are frequently more or less in the way of the operator. The objections incidental to* securing attachments to the work-plate of the machine have, in some instances, been partially avoided by securing the attachments' to the presserfoot or presser-`oar; but in such instances the attachments were subject to the rise and 'fall of the presser-bars by the action of the feed, and were also more or less in the way. It has also been proposed to support the attachments from the machine-head by' a bracket attached to the face-plate or outside of the head; but such a bracket was also nore or less in the way, and was unsightly, and it was there fore desrable to remove it when not in use, so that it did not form a permanent part of the machine, always in convenient position ready for use.

The object of ny invention is to obviate these obj ections by providing an attachment holding bar which is secured within the head 4 5 at the forward end of the overhanging bracket arm of the machine. I also provide a con- 'venientconstruction by which an attachment or a presser-foot may be detachably secured to its bar or holder.

In the drawings, Fgure 1 is a sectional side 'alike. Fg. 5 is a detail elevation of the lower ends of the attachment and presser bars with the attachment and presser-foot removed, and with the presser-bar in the position which it occupies when the presser-foot is raised. Fig.

6 is a detail View of the notched connectingscrew; and Figs. 7 and 8, front views of the presser-foot and hemmer attachment, respectively. i A denotes the lower end of the depending head at the forward end of the overhanging bracket-arn of a sewing-machine, and A' the cap or face plate forming a part of the said head. i

B is the needle bar, C the presser-bar, and c the presser-foot.-

t D isthe vertical attachment-holding bar, made in the form of a tube or sleeve surrounding the presser-bar, and thus being concentric therewith,-the presser-bar being halved-` or cut away at its lower end to accommodate c the thickened lower end of the tubular bar' D, and the latter being secured in the -hefad A by a small set-screw, a, (shown in dotted` lines, Fig. 2,) or in any other suitable manner.

E is a hemmer attachment secured to the `attachmentbar.

I have devised a convenient Construction and arrangenent of parts whereby attachments may be removably secured to the attachment-bar, and have also herein shown go the same device applied to the presser-bar for removably securing the presser foot thereto; and I will now describe the device, with reference to both' the presser bar and foot and the attachment-bar and attachment, the corresponding parts of the two devices being lettered the same in the drawings.

The presser and attachment bars are cut away on their outer sides or faces at their lower ends to form small horizontal tenons or Ioc lugs e, and are provided with threaded holes passing through said lugs, in which fit the holding-screws f, the heads f' of which are provided at their peripheries with a series of scalloped notches. The shanks g of the attachment and presser-foot are provided with Slots-h of suitable size to receive the lugs or tenons e the height of the latter being somewhat less than the t-hickness of the slotted portions of the shanks g. The screws f are turned by small wrenches or hand-levers t', the heads of which are recessed or countersunk to receive the heads of the said screws, the connection between the heads of the screws f and the hand-levers being made by small screws j, tapped in the hand-levers and placed closely enough to the heads of the screws f to come partly within the scalloped notches at the peripheries of the heads of the said screws, the screws j being provided with notchesj' adjacent to their heads of a proper width and depth to permit the hand-levers i or the screws f to be turned independently of each other when the said notches are toward the heads of the screws f, as shown in Fig. 4; but when the full part of a screw j is turned toward the head of a screw, f, as in Fig. 3, the screw j will form a connection between the hand-level' and the head of the screw f, so that the latter can be turned by the said level'. The screw j also attaches the handlever and clamping-screw together.

In clamping a presser-foot or attach ment to its bar the screw f, passing through the head of the hand-lever z', is turned in until there is just room enough between the back of .the hand-lever and t-he presser or attachment bar for the insertion of the slot-ted portion of the shank of the attachment or presser-foot. The slotted shank is then slid into place, and a partial revolution of the screw f, by its hand-lever i, clanps the hand-lever tightly against the slotted shank, and thus the presser-foot or attachment is secured in place. If the handlever, on being raised or lowered to a clamping position, comes into an inproper or incon- Venient position, the trouble can be remedied by turning the screw-j to the position shown in Fig. 4 and moving the said hand-lever independently of the screw f until the screw is opposite such one of the scalloped notches in the head f' as will pernit the clamping hand-lever to be in proper position when tightened. The screwj is then again turned to its connecting position,as in Fig. 3, and the parts are properly adjusted for operation. Thus it will be perceived that the comparatively large number of scalloped notches in the heads of the screws f permit of very fine adjustments of the hand-levers i on the heads of the clampin screws f, so that any desired adjustments of the clamping hand-levers are provided for.

Iu the above-described constructions it will be observed that the shanks of the attachments are clamped against the holder-bar in being secured in place by the heads of the hand-levers, the latter thus serving as clamping-nuts, the said shanks being thicker than the height of the lugs e, which serve as vertical supports for the attachment or presseri'oot.

It will of course be understood that any other attachment, as 'a binder, guide, quilter, tuck-marker, braider, &c., having a slotted holding-shank similar to that with which the hemmer E is provided, may be secured to the attachment-bar D in the same manner that the hemmer is, the hemmer being merely one of the several kinds of attachments to be employed with the machine.

If desired, stops k may be employed to retain the hand-levers in vertical position (see Fig. 5) when they are raised and the attachments or presser-feet are removed.

I claim- 1. The combination, with a sewing-machine head carrying the usual needle and presser bars, of an attachment-holding bar independent of the said needle and presser bars, rigd with the said head, depending from the latter rearward of the said needle-bar, and provided at its lower end with a screw clamping device, by which attachments may be removably secured thereto in operative position.

2. The combination, with a depending sewing-machine head, of a tubular attachmentholding bar rigidly secured within the said head and surrounding the presser-bar, said attachment-holding bar being separate from the said head and the said presser-bar, and being provided at its lower end with' a clamp, by which attachments may be removably secured thereto in operative position.

3. The combination, with a vertical bar having a horizontal lug or tenon on its face near its lower end, of a presser-foot or attachment having a slotted shank, a screw tapped in the said bar through said tenon and having its head provided with a series of scalloped notches, a hand-lever to turn said screw, and a notched shanked screw tapped in said handlever and connectin g the latter with the form er screw.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN M. GRIEST. lVitnesses:

HENRY CALVER, EWELL A. DICK.

IOO

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