US3228365A - Magnetic gauge for sewing machines - Google Patents

Description

Jan. 1966 KAORU YOSHIDA MAGNETIC GAUGE FOR SEWING MACHINES 2 Sheets-Sheet 1 Filed Jan. 6, 1956 INVENTOR.

YOSHIDH u R M K Jan. 11, 1966 KAORU YOSHIDA 3,228,365

MAGNETIC GAUGE FOR SEWING MACHINES Filed Jan. 6, 1965 2 Sheets-Sheet 2 INVENTOR. K14 ORU V06 H IDA United States Patent 3,228,365 MAGNETIC GAUGE FOR SEWING MACHINES Kaoru Yoshida, Funabashi, Chiba Prefecture, Japan, as-

signor to Unity Sewing Supply Co., Inc., New York, N.Y., a corporation of New York Filed Jan. 6, 1965, Ser. No. 423,760 2 Claims. (Cl. 112-153) This invention relates generally to sewing machines and more particularly to a new and useful improvement in a gauge for positioning the material relative to the needle for positioning lines of stitching relative to the edge of the material.

An object of the present invention is to provide a magnetic material gauge for guiding the position of material relative to the needle that is readily movable toward or away from the needle for providing a variety of different width sizes for rows of stitching and scams.

Another object of the invention is to provide a material gauge of this kind that ensures exact widths and straight accurate seams with no loss of time.

A further object is to provide a magnetic gauge of this kind that is especially adapted for use on dresses, blouses, skirts, coats, suits, shirts, sportswear, childrens wear, sweaters and the like.

Still another object of the invention is to provide a magnetic material gauge that is simple in construction, with no parts to get out of order, efiicient in operation, trouble-free in performance and ecnomical to manufacture.

For further comprehension of the invention and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIGURE 1 is a top perspective view of a fragment of a sewing machine with a material gauge embodying the present invention shown in operative position thereon.

FIG. 2 is a top perspective view of the material gauge.

FIG. 3 is a bottom perspective view thereof.

FIG. 4 is a spread perspective view thereof, parts being shown broken away.

FIG. 5 is a top plan view of a fragment of a bed plate of a sewing machine and a throat plate with a material gauge embodying a modified form of the invention shown positioned on the plate.

FIG. 6 is a bottom plan view of the material gauge.

FIG. 7 is a sectional view taken on the line 77 of FIG. 5.

Referring now in detail to the various views of the drawings, in FIG. 1 a portion of a sewing machine is illustrated including a metal bed plate 10, a slidable metal throat plate 12, reciprocating needle 14 and presser foot 16. A rectangular strip of cloth 18 to be seamed is shown stretched across the bed plate and throat plate with one seam 20 already finished and a second seam 22 in the process of being made.

A material gauge 26 made in accordance with the present invention is shown positioned on the bed plate in operative position for gauging the width of the second seam 22 from the finished seam and from the long edge 28 of the strip of material.

The material gauge 26 comprises a shallow pan-shaped steel casing 29 having narrow side Walls 30, 30, a curved end wall 32 and a flat straight end wall 34, the bottom of the casing as viewed in FIG. 1 being open. The flat end wall 34 is formed with integral fiat extensions 36, 36 terminating in slightly curved extremities 38 extending toward the body of the casing. The wall 34 and 3,228,365 Patented Jan. 11, 1966 extensions 36, 36 constitute a straight edge. A rectangular block 40 of permanent magnetic material is seated in the casing 28 with the outer flat surface 42 thereof flush with the outer surfaces 44 of the side walls 30, 30. The casing is wider than the block leaving a clearance 31 on each long side of the block. The block is clamped in the casing by means of a semicircular block 46 of rubber inserted between the South-pole end of the block 40 and the curved end wall 32 and by a fiat rectangular shaped block of rubber 48 inserted between the other North-pole end of the block and the fiat end wall 34. A hole 50 is formed in the center of the permanent magnet 40. The rubber clamping blocks 44 and 46 protrude outwardly slightly beyond the outer edges of the side and end walls of the casing as best seen in FIG. 3 and FIG. 7.

In use, the gauge 26 is placed on the metal bed plate 10 with its open side opening downwardly so that the permanent magnet 40 may be attracted by the bed plate. The gauge is then moved along the bed plate toward or away from the needle 14 the desired predetermined distance and the strip of material to be stitched such as the strip 18 is brought into contact with the straight edge constituted by the flat end wall 34 and extensions 36, 36 of the gauge, the length of the wall and extensions providing sufiicient area to straighten out the strip 18. Once the gauge is positioned, it cannot he accidentally displaced.

A slightly modified form of material gauge 26' is shown in FIG. 5 positioned on a throat plate 12 slidable in a bed plate 10. The throat plate 12' is substantially rectangular in shape with a recess 52 adjacent one end thereof for insertion of the tip of the finger of the user for sliding the plate. The other end of the plate 12' is curved as indicated at 54 and spaced grooves 56 are formed in the top surface thereof to provide settings for the gauge and such grooves may be identified in quarter inches. Inwardly of the grooves, the plate is formed with a needle hole 58 and a series of parallel slots 60 adjacent the needle hole. Instead of grooves 56, colored lines may be used.

The material gauge 26' differs from the gauge 26 merely in that the body of the magnetic block 40' is imperforate, that is, it has no center hole such as the hole 50 in block 40. Otherwise gauge 26 is similar to gauge 26 and similar reference numerals are used to indicate similar parts.

In using gauge 26', the gauge is slid along the top surface of the throat plate 12' until its straight edge is posi tioned the desired predetermined distance from the needle hole 60. The strip of material to be stitched is then brought into alignment with the straight edge whereupon the seam will be stitched at the desired position.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

What I claim as new and desire to secure by United States Letters Patent is:

1. A material gauge for use with the needle hole of a throat plate of a sewing machine, said gauge comprising a shallow rectangular pan-shaped casing having a top wall, side walls and being open at the bottom, at least one permanent magnet inside the casing and exposed through said bottom opening, and means for securing the magnet in the casing, one wall of the casing constituting a straight edge adapted to be spaced a predetermined distance from the needle hole.

2. A material gauge for use with the needle hole of a throat plate of a sewing machine, said gauge comprising a shallow rectangular pan-shaped casing having a top wall, side walls and end walls and being open at the bottom, a rectangular block of permanent magnetic material inside the casing and exposed through said bottom opening, said block being of lesser width than the casing providing a clearance on each long side of the block, one end wall of .the casing being fiat and straight and having integral extensions at both ends, the other end wall being curved, said flat wall and extensions constituting a straight edge adapted to be spaced a predetermined distance from the needle hole, means for clamping the magnetic block to the casing including a fiat rectangular rubber block inserted between the flat end wall and one end of the magtween the curved end wall and the other end of the magnetic block, said rubber blocks extending slightly outwardly of the outer surface of the magnetic block, for cushioning the casing in position on the throat plate.

References Cited by the Examiner FRANK J. COHEN, Primary Examiner.

netic block, and a semi-circular rubber block inserted be- 15 ROBERT V. SLOAN, Examiner.

Claims (1)

1. A MATERIAL GAUGE FOR USE WITH THE NEEDLE HOLE OF A THROAT PLATE OF A SEWING MACHINE, SAID GAUGE COMPRISING A SHALLOW RECTANGULAR PAN-SHAPED CASING HAVING A TOP WALL, SIDE WALLS AND BEING OPEN AT THE BOTTOM, AT LEAST ONE PERMANENT MAGNET INSIDE THE CASING AND EXPOSED THROUGH SAID BOTTOM OPENING, AND MEANS FOR SECURING THE MAGNET IN THE CASING, ONE WALL OF THE CASING CONSTITUTING A STRAIGHT EDGE ADAPTED TO BE SPACED A PREDETERMINED DISTANCE FROM THE NEEDLE HOLE.

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