US1949548A - Bag corner sewing machine - Google Patents

Description

March 6, 1934. c s Q 1,949,548

BAG CORNER SEWING MACHINE Filed July' 11, 1931 Fi g. 2.

N/E VTUR Patented Mar. 6, 1934 UNETE TATES BAG CORNER SEWING REACHINE Fred Ricks, Leicester,

England, assignor to United Shoe Machinery Corporation, Paterson, N. 3., a corporation of New Jersey Application July 11, 1931, Serial No. 550,255 in Great Britain July 15, 1930 7 Claims.

This invention is concerned with improvements in or relating to bag corner sewing and like operations and is particularly but by no means exclusively concerned with machines of the genl eral kind of that described in the specification of United States Letters Patent No. l,6s5,l'18 to Fred Ricks and Robert G. Reid, dated December 18, 1928.

One of the several objects of the present inven tion is to provide for giving eifective inside support to the parts of a bag or similar article to be sewn together when these parts are made of such thin flimsy material or are so formed that the needle and awl of such a machine as above indicated inevitably emerge inside the bag or article from the materials during the formation of the seam.

One of the several features of the invention resides in the provision in a rotary horn machine of a kind such as above indicated of an internal support for the parts to be united which support takes the form of a member supported against the thrust of the needle and awl by the horn and between which and the horn there is capacity for universal movement but the orientation of which member with reference to the work is maintained unaltered during the sewing by means independent of the horn.

Such an arrangement permits of giving very eiiective support to flimsy workpieces close to the sewing path and ensures that the support remains effective as the sewing proceeds.

Another of the several features of the invention resides in the provision in a rotary horn machine of a kind such as above indicated of an internal support for the pieces to be united which support takes the form of a plate supported by the horn and between which and the horn there is capacity for universal movement, the plate having movement imparted to it during the sewing to and fro along the line of the seam.

Such an arrangement permits of the internal work supporting means acting first close to a work-feeding awl in such a machine as above indicated during the work-piercing stroke of the awl and then acting close to the work-entering path of the needle in such a machine.

Again another feature of the invention resides in the employment in a bag corner sewing or simi- 50 lar machine of an internal support for the parts to be united comprising a plate mounted in the machine independently of any horn which the machine may have so as to aiford support from the inside to both parts to be united while admitting of sewing by the machine a continuous seam joining parts of the bag or the like and portions of which seam extend at right angles to one another on at least one of the parts.

Such an arrangement admits as will become apparent hereinafter of dispensing, at all events under some conditions, with a rotary horn in such a machine as above indicated.

The various objects and the several features of the present invention will become apparent to those skilled in the art from what follows.

In the accompanying drawing,

Figure 1 is a front elevation, partly in section, of part of a bag corner sewing machine say as described in the specification of U. S. Letters Patent No. 1,695,718 aforesaid when viewed across the lower face of the work support and embodying a convenient construction illustrative of the present invention;

Figure 2 is a plan view of some of the parts shown in Figure 1;

Figure 3 is a section on the line 3-3 of Figure l; and i 5 Figure 4 is a front elevation showing some of the parts shown in Figure l and a portion of a bag being turned on one of its corners. 30

In the form of the invention illustrated'the work support 1 is provided with surfaces which engage the external faces of the parts to be sewed together arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path. The work support 1 has formed in it a recess 2 and a slot 3 in which recess is guided for movement in the direction of feed of the work a block 4. The block 4 has fixed to it a block 5 having projecting down wardly from it a pin 6. The pin 6 enters a slot in a bracket 7 which is fixed to the usual awl feed slide of such a machine a portion of which is shown at 8. The connection between the block 5 and bracket 7 formed by the pin 6 and slot in the bracket causes the block 5 to move in the direction of feed with the awl but allows the work support to be adjusted angularly, as is usual in machines of this type, without disturbing the connection. Fixed to the blocks 4 and 5 by a screw 9 and washer 10 is a plate 11 which extends between the edges of the parts of the bag being sewn and engages and supports the inside of the bag.

Two portions of a bag which are to be joined together are shown at 12 and 13. The portion 12 rests on the lower face 14 of the work support 1 and its edge is guided by the face 15 of the work support. The plate 11 is bent as shown in Figure 2 so that the edge of the portion 12 of the bag passes in front of the part 150 of the plate 11 while the part 16 of the plate bears against the upper face of the portion 12 of the bag and supports it against the upward thrust of the awl 17. The portion 13 of the bag passes behind the plate 11 and when passing the face 15 of the work support 1 its edge rests on the upper face of the portion 12 of the bag and it is supported agamst the thrust of the needle by the plate 11. The plate 11 moves in company with the awl in the line of feed and is adjusted with the awl for different lengths of feed. Its left hand end is close to the plane of the awl path, as shown in Figure l, at all times so that it supports the bag portions as close as possible to the points of penetration of the awl and needle.

The plate 11 may be made strong enough to support the work against the thrust of the needle and awl without any additional support; but if desired (and as assumed to be the case in the drawing) it may be springy and a horn to buttress the plate 11 may be used. This horn may as indicated be as disclosed in the specification of United States Letters Patent No. 1,695,718 except that the tip or table is of the shape shown in Figure 3, the table having a bevelled margin to afford clearance for the needle and awl. The table engages the plate 11 at about the portion 16 thereof as indicated by the smaller dotted circle in Figure 1.

With such a construction it will be seen that as indicated in Fig. 4 when the seam has been carried along one side of a piece such as 13 to the corner of the latter the seam may be continued along the adjacent side of the piece 13 to unite the latter side to the piece 12 after merely swinging the part 13 in the direction of the arrow shown in Figure 4 until the edge of the piece 13 along which the seam is to be continued has been swung down behind the plate 11 on to the piece 12.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, and an internal work support having a portion passing between the edges of the parts being sewn together.

2. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, and an internal work support extending in the direction of feed and having a portion passing between the edges of the parts being sewn together.

3. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and. intersecting the needle path, a feed slide and an internal work support mounted on the feed slide and having a portion arranged to pass between the edges of the parts being sewn together.

4. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, a bag entering horn and an internal work support mounted independently of the horn and extending between the horn and the external work support.

5. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, and an internal work support comprising a plate having a portion extending between the edges of the parts being sewn together with one face cooperating with one surface of the external work support to hold one of the work parts and with one edge 00- operating with the other surface of the external work support to hold the other work part.

6. In a machine for sewing bags or similar articles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, and an internal work support comprising a plate having a portion extending in the direction of feed between the parts being sewn together with its end in close proximity to the needle and awl paths.

'7. In a machine for sewing bags or similar ar ticles, an external work support provided with surfaces arranged to support the work with both faces adjacent a corner at an inclination to and intersecting the needle path, a feed slide, an internal work supporting plate having a portion passing between the edges of the parts being sewn together, a slide mounted in the external work support to which said plate is secured, and a connection between said last mentioned slide and the feed slide.

FRED RICKS.

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