US1167777A

US1167777A - Folder for sewing-machines.

Info

Publication number: US1167777A
Application number: US67997912A
Authority: US
Inventors: James R Moffatt
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1912-02-26
Filing date: 1912-02-26
Publication date: 1916-01-11
Anticipated expiration: 1933-01-11

Description

1. R. MOFFAITT.

FOLDER FOR SEWING MACHINES.

APPLICATION FILED FEB- 26,1912.

7 I 1,16%??? Patented Jan. 11, 1916.

WITNESSES 1 4 3 2 MW; MZ?

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' JAMES R. MOFFATT, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE t me.

COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FOLDER FQB SEWING-MACHINES.

Specification of Letters Patent.

Patented J an. 11, 11916.

Application filed February 26, 1912. Serial No. 679,979.

. To all whom it may concern inverts the stripas it is delivered to stitching mechanism. I

Be it known that I, JAMES R. MOFFATT, a citizen of' the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Folders for Sewing Machines, of which the following is a description, reference being had to the accom- An object of the invention is to provide a folder which is so constructed that it is capable of folding a strip with one side face of the strip much wider than the other, and the inverting and delivering of the strip to the stitching mechanism.

A further object of the invention is to provide a folder of the abovecharacter, with a separating device for separating and supportin the upper face of the bindin strip as it passes from the folder to the StItClllIl mechanism,-whereby afree space is formed beneath saidseparating plate, for a body fabric so that an elastic fabric may be led beneath said separating plate to the stitching mechanism, where the binding strip is applied to the elastic fabric, Without stretch ing of the elastic fabric.

These and other objects willin part be obvious, and will in part be hereinafter more fully described;

In the drawings which show by way of illustration one embodiment of the invention: Figure 1 is a perspective view, showing a folder having my improvements applied thereto, and also the arrangement of the folder relativeto-the stitching mechanism, and the devices for feeding the folded strip and body fabric to the stitching mechanism; Fig. 2'is a perspective view showing the manner of folding a strip and positionmachine.

through" the folder.

the separating plate being removed, andthe supporting shank for the folder sectioned.

In carrying out the invention, I have provided a folder which is attached to a supporting shank 1, that may be screwed or otherwise secured to the bed plate of the Said folder consists of spaced

plates

2 and 3, which are arranged at their receiving end so as to form an L-shaped passage 4, one part of which is substantially horizontal, and the other part of which is substantially vertical. The vertical portion of said passage 4, is much shorter than the horizontal portion. The plate 2, at the .receiving end of the folder, extends beyond the plate 3, and a tension finger 5 is adapted to bearagainst the strip as it passes along the plate 2. Said tension finger is formed with an opening through which passes a post 6, around which is placed a spring 7. Said spring bears against the finger to press the same against the 'material passing The tension of the spring 7 is controlled by suitable nuts. 'T he plates 2 and 3 as they approach the delivery end of the folder, are shaped so as to fold the edge of the strip back upon the 'body portion of the strip.

The plate 2 at the delivery end of the folder, extends around the edge of the plate 3, and. forms the

folding passages

8, 8, for the edges of the fabric. The

plates

2 and 3 are also gradually bent so as to fold the fab ric intermediate its edges, as clearly shown in Fig. 5. This bent portion in the

plates

2 and 3, is so disposed that one face of the folded strip is much wider than the other face-of the folded strip. The folder is attached to the sewing machine so that the longitudinal axis of the folder is at right as it leaves the delivery end of the folder, is

therefore, inverted as it passes to the stitching mechanism in a manner well known in this type of folder- This inverting of the folded strip brings the folded edges of the strip against the faces of the body material.

In Fig. 2, I have shown a strip of fabric 9, the edges of which at 10 and 11, are folded back upon the body part of the strip, and the strip is folded intermediate its edges as at 12, so that when the strip is inverted and positioned relative to a body fabric 13, there is a relatively narrow faceli on the the

plates

2 and 3. Said fingers serve as a presser foot.

guide for the edge of the strip as it is inverted and led from the folder. In order to further guide the strip as it passes to the stitching mechanism, Ihave provided an edge guide 18 which is located in rear of the folder and is adjustably secured'to' the shank supporting the folder, by screws 20 which pass through a slotted shank 21 connected to the edge guide. Said edge guide 18 is formed with an overhanging lip '22.

In order to support the upper edge of the binding strip, and hold the same away from the lower part of the folder, I have provided a separating plate 23 which ISIPIV". oted at 24' to a block 25, carried by the shank of the folder. This separating plate is formed with an arc-shaped slot 26, and a pin 27 carried by the block, enters said slot and limits the swinging movement of said separating plate. Said separating plate is adapted to extend underneath the overhanging lip 22 of the edge guide. The upper face of the binding strip will be supported by this separating plate, and thereby a free passage is formed underneath the separating plate, so that an elastic fabric may be led through said passage, without any retarding effect of the folder on said elastic fabric. The block 25 may serve as an edge guide for the elastic fabric. This separating plate, together with the-edge guide and overhanging lip, also serves to maintain the fold in the edge of the strip as it passes to the stitching mechanism. There is between the delivering end of the upper edge of the folder and the presser foot considerable distance. Unless means is provided for main taining the fold in the edge of the fabric, it will uncurl before it reaches the presser foot. The means above referred to accomplishes this result.

In Fig. 1 of the drawings, I have shown the arrangement of the binder relative to the presser foot 28 of the sewing machine. Said binder is so positioned as to extend in front of the presser foot, and deliver the folded binding strip underneath the presser foot. The edge guide 18 extends into a notch at the forward end of the presser foot, so thatthe edge of the binding strip is guided until it has passed underneath the This edge guide and overhanging lip 22 serve as a means for maintaining the folded-over edge of the binding strip, and presenting the same to the upper face of the body erably positioned slightly.in front of the presser foot, so that a differential feed foot may operate upon the elastic material only in advance of the presser foot.

From the above description, it will be apparent that I have provided a folder which is capable of folding a strip of fabric, turning in the raw edges thereof, and presenting said strip to the stitching mechanism, so that when the strip is stitched to a body fabric, one of its faceswill overlap the body fabric to a greater extent than the other, thereby forming a facing strip for the body fabric and a binding for the edge of the body fabric.

It is obvious that minor changes in the details of construction may be made, with out departing from the spirit of the invention as set forth in the appended claims.

Having thus particularly described my invention, what I claim as new and desire to secure by Letters Patent, is 2- 1. A. folder for sewing machines, said folder including a body portion having spaced guiding walls shaped so as to fold a strip between its edges, said folder being located at an angle to the line of feed and having its delivery end cut away, whereby said strip may be inverted,' said folder at one side of the central plane thereof being wider than at the other, so that one face of fabric.- The folder is prefthe folded strip when guided through the folder may be wider than the other, and means independent of the folder extending between the faces of the folded strip after it leaves the folder for guiding and maintaining the fold in said strip.

2. A folder for sewing machines, said folder including a body portion having spaced guiding walls shaped so as to fold a strip between itsedges, said folder being located at an angle to the line of feed and having its delivery end cut away, whereby said strip may be inverted, said folder at one side of the central plane thereof being wider than at the other, so that one face of the folded strip when guided through the folder may be wider than the other, means independent of the folder extending between the faces of the folded strip after it leaves the folder for guiding and maintaining the fold in said strip, and means for angle to the longitudinal axis of the folder,

and a separating plate for supporting the upper folded edge of the strip after the same" passes from the folder.

angle to the longitudinal axis of the folder,

and a separatingplate for supporting the upper folded edge of the strip after the same passes from the folder, means for pivotally supporting'said separating plate,

and a stop for limiting the swinging movement thereof;

5. A folder for sewing machines, including means for folding a strip with oneface thereof wider than theother and for fold-"j ing in the edges of the strip, and for inverting said folded strip whereby the same is led from the folder ina direction at an angle to thelongitudinal axis of the folder, an a 'separatlng'plate for supporting the upper folded edge of the strip as it passes from the folder, said separating plate being spaced from the "lower part of the folder, whereby a body fabricniay be led tinderneath vsaid separating plate;

6. A folder for sewing machines, including means for folding a strip with one face thereof wider than the other, and means for inverting said. folded strip, whereby it may.

be led from the folder in a direction at an angle to 'the longitudinal axis of the folder, an overhanging lip for maintaining the edge foldedafter it leaves'the folder, and

a. separating plate extending underneath said overhangingi lip for supporting the folded edge after it leaves the folder.

In testimony whereof I affix my signature,

in presence of two witnesses.

. JAMES R. 'MOFFATT. Witnesses:

A. B. CLOTHIER, C. M0NEIL.