US1986363A

US1986363A - Folder support for sewing machines

Info

Publication number: US1986363A
Application number: US646133A
Authority: US
Inventors: Rudolph J Sailer
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1932-12-07
Filing date: 1932-12-07
Publication date: 1935-01-01
Anticipated expiration: 1952-01-01

Description

R. J. SAILER Jan. 1, 1935.

FOIBDER SUPPORT FOR SEWING MACHINES Filed Dec. 7. 1932 3 Sheets-Sheet l Jan. 1, 1935.

R. J. SAILER FOLDER SUPPORT FOR SEWING MACHINES Filed Dec. 7, 1932 3 Sheets -Sheet 3v Rudolph cl Sails? Jan. 1, 1935. R. J. SAILER 1,986,363

FOLDER SUPPORT FOR SEWING MACHINES Filed Dec. '7, 1932 5 Sheets-Sheet 2 stood by those Patented Jan. 1, 1935 PATENT oFFicr.

1,986,363 FOLDER SUPPORT FOR SEWING MACHINES Rudolph J. Sailer, Townley, N. 3., assignor to The Singer Manufacturing Company,

Elizabeth,

N. J., a corporation of New Jersey Application December '7, 1932, Serial No. 646,13

4 Claims.

This invention relates to improvements in folders for sewing machines, and more particularly to the means for supporting the folder.

One of the objects of this invention is to provide a support for a. folder whereby the folder may be shifted out of its operative position to provide access to the stitch-forming mechanism, after the stitching operation has been started and when the work is in the folder, without shifting or disturbing the work.

With the above and other objects in view, as will hereinafter appear, the invention consists in the devices, combinations, and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily underskilled in the art.

In the drawings:

Fig. 1 is a perspective view of a portion of a sewing machine showing my improved folder support attached thereto, the folder being shown in raised or retracted position.

Fig. 2 is a right side elevation, partly in section to show the'loop-takers and feeding mechanism, the operative position of the folder being shown in full lines and the retracted position being shown in dotted lines.

Fig. 3 is a top plan view partly in section of a portion of a sewing machine with my improved folder support and folder attached thereto.

Fig. 4 is a right side elevation of a portion of a sewing machine showing the position of the folder and its pivoted support relative to the feeding and stitch-forming mechanism.

As illustrated in the drawings my improved folder-support is shown attached to the clothplate 1 .of a two-needle double chain-stitch machine having a bed 2, overhanging bracket-arm 3, needle-bar 4, needles 5, presser-foot 6, feeddog '7, and loopers 8. The cloth-plate 1 is provided with a displaceable section 1 to provide access to the lower stitch-forming mechanism or loopers 8. It will be understood however thatthe stitchforming and feeding mechanism of the sewing machine may be of any suitable construction, as my improved folder-support is applicable to various types and kinds of sewing machines.

In the preferred embodiment of this invention I have shown a center-plait folder 9 having its delivery end 10 terminating slightly in advance or in front of the stitch-forming and feeding mechanism of the sewing machine. The folder 9 is mounted on one end of an L-shaped bracket dotted lines in Figure 2) when 11, the other end of the bracket being hinged at 12 to a base-plate 13 which is secured to the cloth-plate 1 of the machine by the screws 14. Pivoted to the under side of the bracket 11 for horizontal movement is a locking-lever 15 which enters a slot 16 provided in the raised portion 1'7 at the forward end of the base-plate. The upper wall of the slot 16 is slightly inclined to the path of the locking lever which permits the locking lever 15 to be wedged in place so as to hold the folder firmly in its operative position.

When the work is in the folder and being acted upon by the stitch-forming and feeding mechanism it is often necessary to shift the folder so that access may be had to the lower stitch-forming mechanism for re-threading, or inspecting and lubricating. In folder-supports as heretofore constructed, when the folder is shifted from operative to retracted position the delivery end of the folder is moved relative to the stitch-forming and feeding mechanism with the result that when the folder is returned to its operative position there is an excess of material between the delivery end of the folder and the stitchforming and feeding mechanism. This excess of material must then be drawn through the folder in a reverse direction which is likely to disarrange the material at the mouth of the folder.

To overcome this that I have arranged the axis of the hinge 12 transverse to the direction of feed and in alignment with the delivery end 10 of the folder. This construction permits the folder to be shifted from its operative position (shown in full lines in Figure 2) to its retracted position (shown in the work is in the folder, and after the stitching has been started, without shifting the work in the folder and without disturbing the relation between the delivery end of the folder and the stitch-forming mechanism.

It will be obvious that my invention is not limited to a center-plait folder such as I have shown and that it is applicable to any type of folder, having its delivery end terminating in advance of the stitch-forming mechanism and feeding mechanism.

It will be apparent that changes in the details of construction and arrangement of parts may be made. Therefore, the privilege is reserved of difficulty it will be observed 6 resorting to all such legitimate changes therein as may .be fairly embodied within the spirit and scope of the appended claims.

Having thus set forth the nature of the invention, what I claim herein is: I

1. In a sewing machine having a work-support, stitch-forming mechanism, and a feed-dog and presser-foot, a plate secured to said worksupport, a bracket, a pivotal connection between said bracket and said plate, said pivotal connection being located one side of and slightly in advance of said presser-foot, a folder carried by said bracket, said folder having its delivery end terminating in alignment with said pivotal connection, and means for locking said bracket to said plate.

2. A sewing machine having a bed including a cloth-plate, an overhanging bracket-arm, stitchforming mechanism including a reciprocatory needle carried by the bracket-arm and loop-taking means located below the cloth-plate, said cloth-plate including a section which is displaceable to expose the loop-taking means, and a folder mounted in advance of the stitch-forming mechanism and overlying the displaceable section of the cloth-plate, said folder being pivotally sustained above the cloth-plate for movement about a horizontal axis substantially coincident with its delivery end and transverse to the direction of the line of seam formation.

3. A sewing machine having a bed including a cloth-plate, an overhanging bracket-arm, stitch-forming mechanism including a reciprocatory needle carried by the bracket-arm and looptaking means located below the cloth-plate, said cloth-plate including a section which is displaceable to expose the loop-taking means, and a Workguide having a work-guiding passageway extending in the direction of seam formation located above the displaceable section of the cloth-plate, said work-guide being mounted for swinging movement about an axis disposed transverse to the direction of seam formation and substantially in the plane of the work whereby said workguide may be moved about said axis to provide access to the loop-taking means without drawing the work through the folder.

4. A sewing machine having a bed including a cloth-plate, an overhanging bracket-arm,

stitch-forming mechanism including a reciprocatory needle carried by the bracket-arm and loop-taking means located below the cloth-plate, said cloth-plate including a section which is displaceable to expose the loop-taking means, a presser-foot, a work-guide arranged in advance of the presser-foot and disposed above the displacea'b'le section of the cloth-plate, said workguide being mounted for swinging movement about an axis disposed transverse to the directlon of the line of seam formation and in advance of the presser-foot and substantially at the level of the work1'eceivi11g space between the presserfoot and the cloth plate, whereby said Work-guide may be moved about said axis to provide access to the loop-taking means without disturbing the relation between the delivery end of the folder and the needle.

RUDOLPH J SAILER.