US394968A - Tuck creasing or marking attachment for sewing-machines - Google Patents

Description

(No ModeL) J. M. GRIEST. TUUK OREASING OR MARKING ATTACHMENT FOR SEWING MACHINES. No. 394,968. Patented Dec. 25, 1888.

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UNITED STATES PATENT ()EETCE.

JOHN M. GRIEST, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY OF NETY JERSEY.

TUCK CREASING 0R MARKlNG ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 394 968, dated December 25, 1888.

Application filed December 27, 1887. Serial No. 259,093. (No model.)

To all whom it may concern:

Be it known that 1, JOHN MJGRIEST, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tuck Jreasers or Markers for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of my invention is to provide a convenient, strong, and substantial tuck creasing or marking attachment for sewingmachines, in which the creasing is effected by two pinching-levers operating on the goods on opposite sides of an npwardly-projecting lip on the base-plate or lower arm of the attachment.

In the drawings, Figure l is a perspective view of my improved attachment. Fig. 2 is a plan view of the same. Fig. 3 is a longitudinal section on line 3 3, Fig. 2,with the markinglever depressed. Fig. l is a cross-section on line 4 4, Fig. 2. Fig. 5 is a detail view to show the connection between the operating-lever and the marker-lever. Fig. 6 is a detail section on line 6 (i, Fig. 2.

A denotes a support or bracket, the upturned portion a of which is provided with a a slotted horizontal part, a, adapted to be secured to an attachmentrholding bar such as is shown by my application, Serial No. 259,090, filed simultaneously herewith.

B is the body-bar of the attachment, passing through the support A and having its forward end, b, flattened and provided with an upwardly-projecting creasing-lip, b, the rear end 19 of the said bar being turned upward and backward and bored to form a socket for the reception of the rear end 0 of the marker-carrying lever C, to the forward end of which latter are pivoted two small pinching or creasing levers, 0, having lugs 0 connected by a retracting -spring, 0 A stop, 0, formed on the part of the lever C to which the pinching-levers are pivoted, is arranged to be engaged by the tail portions 0 of the said pinching-levers, and thus limit the return movements thereof effected by the spring 0 D is the operating-lever, pivoted to a small post, on the bracket or support A, the said lever having a ing, (Z, arranged to be engaged by the lower end of the needle-bar of the machine. The lever l) is provided at its forward end with perforated lugs (1 (I through which passes the longer arm of a hook, c, the shorter arm of which impinges against the upper side of the mark'cr-carrying lever A spiral sping, c, interposed between a pin, e entering the longer arm of the hook c, and the lug (Z forms a yielding connection between the said hook and the lever I), so that if the shorter arm of the said hook should force the marker-carrying lever or arm downward as far as it is desirable for it to go before the needle-bar should have reached the lowest point of its descent the spring 9' will be compressed, and a sudden shock or jar will thus be prevented.

The hook e is free to be turned in the lugs d d of the operating-lever D, so that if it is desired to disconnect the said operating-lever from the marker-carrying lever C to suspend the movements of the latter it is only necessary to turn the said hook to. the position shown by dotted lines in Fig. 3, when it will be, entirely clear of the said lever C. A torsional spring, 6 on the rear end 19 of the bar B serves to lift the lever C after it has been depressed.

The rear end 0 of the lever C is preferably held in a socket at the end I) of the bar B by a pin, f, which in the present instance is merely the upturned end of a small rod, F, the forward end of which extends over the lip 19, and thus serves as a slight presser to hold the passing fabric 011 the said lip. The pin f fits rather loosely in the hole in the end 0 of the lever C, so that the said lever will be free to move downward when depressed by the needle-bar, but the said pin fits closely enough in said hole to serve as a stop to limit the upward movement of the said lever when the latter is raisedby the spring 0 G is an edge guide secured to a bar, g, passing through the support or bracketA and adjustable therein, the said edge guide being steadied by the bar B, which passes freely through said guide. The bar B is also free to be adjusted through the support or bracket A when not clamped thereto, so that the upper and lower creasing devices, which are both movable with said bar, maybe adjusted from or toward the needle of the machine to vary the width of the tucks made by folding the fabric on the crease produced by the said creasing devices, the said support or bracket being, of course, stationary relative to the line of the stitches made by the machine. The bars B and g, which are preferably provided with flattened lower faces, are secured to the support or bracket A by a clampingplate, H, provided with threaded pins 71, extending up through the said support or bracket A and receiving set-nuts 71 ,b v which the cla1nping-plate may be forced upward against the lower flattened faces of the said bars to hold them in place.

When the creasing or marking attachment 2o secured in place on a sewing-machine and the machine set in motion, a vibrating movementwill be imparted to the marker-carrying lever by the i'leedle-bar ot' the machine and the retractingspring c5. 'hen the pinchinglevers c strike the flattened forward end, I), of the bar B on opposite sides of the lip 1), they will be forced toward each other, pinching the fabric lying on said lip to form a mark or crease on which the said fabric will be folded to form the next tuck parallel with the one being sewed.

I claim 1. In a tuck creaser or marker for sewingmachines, the combination, with a lower creas- 3 5 ing device and a marker-carrying arm or lever, of two independent pinching or creasing levers pivoted to the forward end of the said marker-carrying lever, a single retractingspring for the said pinching-levers, and means for operating the said marker-carrying lever. :2. In a tuck-creaser for sewii'ig-machines, the combination, with the bracket or support A, of the body-bar B, having the flattened end I), provided with the lip b and the rearwardlyturned hollow end b the marker-carrying lever C, pivoted in the said hollow end, the two independent pinching or creasing levers c, the retracting-springs c and l), and the operating-lever D.

In a tuck creaser or marker for sewing machines, the combinatioi'i, with the lower creasing device and the marker-carrying lever (1, of the OPBPELtiIlg-lGVOl' .D, having the perforated lugs d d", the reversible hook 0, one arm of which passes freely through said lugs and the other arm of which impinges against the said lever C, the spiral spring e, and the pin e 4:. In a tuck creaser or marker for sewing machines, the combination, with the body-bar B, having a creasi ng-li p at its forward en d and having at its rear end a longitudinally-socketed portion, D of the marking'lever the rear end, c, of which has a bearing in the said socketed portion 5 the spring-rod F, having an upturned rear end to form a pin which retains the said end 0 in its socket, and having its forward end extended over the said creasing-lip to serve as a presser, and means for operating the said lever 5. In a tuck creaser or marker for sewing machines, the combination, with the creasing devices and the bracket or support A, of the bars B and g, passing through said support, the edge guide l, steadied by the said bar B, which passes through the said guide, the clamping-plate H, having the threaded pins 71', and the set-nuts h.

6. In a tuck creaser or marker for sewingmachines, the con'lbination, with the markinglever C and its lifting-spring, of the operating-lever D, carrying at its forward 'end the reversible hook e to impinge against the said lever C, and the support or bracket A, having the post A to which the rear end of the said lever D is pivoted.

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

JOHN M. GRIEST. lVitnesses:

HENRY CALVER, EwELL A. DICK.

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