US2942565A

US2942565A - Button holding presser-foot

Info

Publication number: US2942565A
Application number: US656893A
Authority: US
Inventors: Ralph E Johnson
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1957-05-03
Filing date: 1957-05-03
Publication date: 1960-06-28
Anticipated expiration: 1977-06-28
Also published as: FR1195584A; GB826597A

Description

June 28,1960 R. E. JOHNSON BUTTON HOLDING PRESSER-FOOT Filed May 3, 1957 IN VEN TOR. Ralph E. Johnson A T TORNE Y United States Patent 2,942,565 f Patented June 28,1969

2 Claims. (Cl. 11%235) This invention relates to sewing machines and more particularly to a presser-foot for use with zigzag sewing machines adapting the machine for sewing on buttons, and the present invention has as its primary object to provide an improved device of this character.

Another object of the invention is to provide an improved button sewing foot by the use of which different lengths of thread-type button shanks can easily be obtained.

A further object of the invention is to provide an improved button sewing foot that can be used to sew on buttons in a manner to provide them with or without thread-type button shanks.

Having in mind the above and other objects that will be evident from an understanding of this disclosure, the invention comprises the devices, combinations and arrangements of parts as illustrated in the presently preferred embodiment of the invention which is hereinafter set forth in such detail as to enable those skilled in the art readily to understand the function, operation, construction and advantages of it when read in conjunction with the accompanying drawings in which:

Fig. 1 is an elevational side view, partly in section, of a portion of a zigzag sewing machine equipped with a button holding resser-foot embodying the present invention,

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1,

Fig. 3 is a horizontal sectional view taken on the line 3--3 of Fig. 1,

Fig. 4 is a perspective view of the in Figs. 1 through 3,

Fig. 5 illustrates a thread-type shank button which has been sewed on by a machine equipped with the presserfoot shown in Figs. 1 through 4, and

Fig. 6 illustrates a shankless button, which has also been sewed on by the use of the same presser-foot.

.The zigzag sewing machine, indicating generally in the drawings by numeral 14, is provided with a horizontal work support 16. A slant swinging needle-bar 17 carries a conventional eye-pointed needle 18, and a slant presserbar 19 is equipped with a conventional screw 21, which clamps to the lower end of the presser-bar 19 the shank 22 of a resser-device or -foot 23 embodying the present invention.

Preferably the presser-foot 23 is formed from'a single piece of rigid material and the shank 22 thereof, which is conventional, has an open ended slot 24 adapted to receive the stem of the screw 21. An arm 26, which is wider at the bottom than at the top, depends from the shank 22. The lower end portion 27 of the arm 26 joins, at an approximately ninety degree (90) bend 28, the

resser-foot shown rear portion of the sole-plate 29. The lower portion 27 a of the arm 26 and the rear portion 30 of the sole-plate 29 are apertured as at 31, the aperture or hole- 31 extending in the form of an L from the arm 26, through the bend 28 and into the sole-plate 29. The upper surface of the "thicker, as indicated at 39,

sole-plate 29 has a semi-circular groove 32 registering with that portion of the aperture 31 which is in the soleplate 29, and the groove 32 extends from the aperture 31 -to' the front edge of the sole-plate 29. Reference to Fig. 4 shows that the aperture 31 and the groove 32 are located slightly to the left of the center of the sole-plate 29. The front portion of the'sole-plate 29 is formed with two spaced projections or

toes

36 and 37, forming therebetween an open-sided slot 38. The front portion of the sole-plate 29 as well as the

toes

36 and 37,are slightly than is the rear portion of the sole-plate 29. Reference to Fig. 4 also shows that the front end of the groove 32 enters the slot 38 at a location slightly to the left of the center thereof and therefore 'slightly-to the left ofthe center between the two'

toes

36 and 37. i

The subject presser-foot is used in the following manner. If it is desired to sew a button 41 to the work piece 42 by means of a thread-type shank, the button 41 is placed at the proper location on the work piece 42 and thereafter under the sole-plate 29 so that the holes 46--47 of the button 41 are within the open-sided slot 38, as shown in Fig. 3. Regardless of the spacing between the holes of the button, it is preferable to position the left hole 46 of the button 41 in the left end of the slot 38.

In other words the left hole 46 is placed adjacent to the toe 36. Then the 'presser-foot 23 is lowered on the button 41, thereby holding it in place. Thereafter a sewing machine needle or other suitable shank-length member 48 is placed in the grove 32, in such'a position as to extend through the aperture 31. This causes the needle 48 to lie substantially perpendicular to the thread-type shank to be formed. Next one side of the swing of the zigzag needle 18 of the sewing machine 14 is aligned with the left hole 46 and the swing of the needle 18 adjusted to enter the hole 47 when the said needle 18 has swung to the other extremity of its movement. Then the sewing machine 14 is started. First the needle 18 enters hole 46 after which it rises and swings to the right over the horizontal needle 48 and enters the hole 47. This forms a loop of thread over the needle 48. Thereafter, the needle 18 rises from the. hole 47 and swings over the needle 48 in the opposite direction to the first swing and then enters the hole 46. These stitch forming operations are repeated until the proper number of loops of thread are formed over the needle 48. Finally the stitches are tied 01f by causing the needle 18 to enter and leave the left hole 46 several times in succession. 'When this has been completed, the needle 48 is withdrawn from the groove 32 and the aperture 31. Thereafter the presserfoot 23- is raised and sewing threads are cut and the button 41 released. Because of the threads which were looped over the needle 48, the button will be loosely held to the work piece 42. The shank threads 49 are then bound or wrapped in the manner indicated at 5-1 of Fig. 5.

The drawings used to illustrate the invention show the blade 52 of the needle 48 positioned in the groove 32. If desired, the shank 53 of the needle 48 can be positioned in the groove 32. In the former case a relatively short button shank will result, whereas in the latter case a relatively long button shank will be obtained. It even a longer button shank is desired a larger diameter shank-length member '48 can be placed in the groove 32.

If it is desirable to sew a button 41' (Fig. 6) to a work piece 42' without leaving a shank, the above procedure is followed except that a needle 48 is not placed in the groove 32. A non-shank button is-illustrated in Fig. 6.

Having thus set forth the nature of the invention, what I adapted to be secured to said presser-bar, an afrh depending from said shank, a solid one-piece sole-plate connected to the lower end of said arm, and said sole-plate at the location where the sole-plate is connected to said arm being provided with an aperture, said sole-plate also having a long narrow shallow groove in the upper face thereof and a pair of spaced toes formed integral with and on the front of said sole-plate, said toes defining therebetween an open-sided slot, the said long narrow groove extending from said aperture to said open-ended slot and said slot being wider than said groove.

2. A resser-device for sewing machines having a resser-bar, said presser-device comprising a shank adapted to be secured to said resser-bar; an arm depending from said shank, and the extreme lower end of said arm being provided with an aperture; a solid one-piece soleplate connected at an angle of approximately ninety degrees (90) to the lower end of said arm, and said sole-plate at a location adjacent to said arm being pro vided with an aperture which joins with the aperture in said arm to form an L-shaped aperture extending from aid, arm n o sa ol -p e, s l -pl e al ha n a long narrow shallow groove in the upper face thereof, spaced toes formed on the front free end of said soleplate, said toes defining therebetween an open-sided slot, said slot being wider than said groove and the said long narrow groove being located to the left side of the center of said presser-device and extending from said aperture to said openended slot.

References Cited in the file of this patent UNRTED STATES PATENTS 1,211,340 Page Jan. 2, 1917 1,359,858 Barron Nov. 23, 1920 2,331,170 Brussell Oct. 5, 1943 2,735,387 Baehr Feb. 21, 1956 FOREIGN PATENTS 758,981 Germany Jan. 5, 1953