1. Field of the Invention
The present invention generally relates to an apparatus and method to add embellishments and embroidery upon a fabric with a sewing machine. More particularly, the present invention relates to a hoop fixture to position and clamp embellishments while being sewn to a base fabric.
2. Description of the Related Art
A modern sewing machine is able to produce a variety of stitches and stitch patterns on demand. The feeding of fabric into the machine may be manually controlled by hand, or the feeding of the fabric may be processor controlled. A processor controlled sewing and embroidery machine is able to produce a variety of stitch patterns or embroidery elements by selection from a database. A stitch pattern is an entity composed of a number of stitches. A number of stitches may also be used to form an embroidery element. The embroidery element combines the stitches or stitch patterns to form a desired shape or appearance on the base fabric. Embroidery elements may take any shape and use any combination of stitches or stitch patterns.
In embroidering a fabric using a processor controlled embroidery machine it is possible to use ready designed embroidery elements which are stored as data in a memory, either in the embroidery machine or in an external memory unit. Such embroidery elements can be combined and programmed to succeed one another in order to generate a desired composite embroidery pattern. Examples of the combination of embroidery elements are given in the document U.S. Pat. No. 4,352,334 which discloses a method of combining embroidery elements, in this case embroidered letters. It is also possibly to embroider using a manually controlled machine by free hand feeding of the fabric into the machine to achieve the desired shape.
A selection of pre-designed stitches, stitch patterns and embroidery elements are included with the processor controlled sewing and embroidery machine. A manually controlled sewing machine includes a selection of stitches and stitch patterns. Advanced embroidery sewing machines provide tools for creating new embroidery elements by combining existing stitches, stitch patterns, or embroidery elements. Data for each individual stitch, stitch pattern, or embroidery element can be reproduced as a graphic representation on a display, which may be integrated with the sewing machine. Such graphic representation of a stitch, a stitch pattern, or an embroidery element is referred to herein as a stitch graphic, stitch pattern graphic, or embroidery graphic respectively. By freely selecting a combination of the graphics above and by joining these together in a group, a more complex stitch pattern, or embroidery element may be designed. The sequence of selected graphics and associated data may then be stored in memory as a new stitch pattern or embroidery graphic.
The processor controlled sewing and embroidery machine is provided with a processor, a control program, and a memory. The control program may be integral with the processor or stored in memory. The memory is accessible by the processor and may either be accommodated within the machine or may be external. Data for each individual stitch, stitch pattern, or embroidery element is stored in a database within the memory. A display is provided upon which the graphic elements representing the stitch, stitch patterns, or embroidery elements may be displayed to the user.
When performing embroidery, the machine uses an embroidery frame or hoop to hold the base fabric to receive the embroidery element. The base fabric is stretched and secured around the periphery of the hoop. The embroidery hoop is then mounted to an embroidery unit which may be integral with the machine and which is controlled by the machine processor. In some applications, the embroidery unit may also be separate from the machine. When mounted, the plane of the embroidery hoop is generally perpendicular to the axis of the sewing needle stroke. The embroidery unit contains mechanisms for movement of the embroidery hoop in perpendicular X and Y directions within the plane of the hoop. The position of the embroidery hoop relative to the sewing needle is controlled by the processor and is referenced to an X and Y coordinate axes. The position of the embroidery hoop at any time is expressed within the processor as an X coordinate value and a Y coordinate value. During a sewing or embroidery operation, the machine processor accesses the stored data and signals the embroidery unit to move the embroidery hoop in corresponding X and Y coordinate displacements to produce the desired stitch, stitch pattern, or embroidery elements.
In sewing or embroidery, it is often desirable to attach ribbons or yarns to the base fabric. These additional elements, referred to herein as embellishments, may be in many textures, thicknesses and widths. Any combination of embellishments, embroidery elements, stitches or stitch patters, are referred to herein as a design. Other embellishments such as patches, emblems, and the like may also be incorporated within a design. Such embellishments add a 3-dimensional effect, or texture, to the completed design. In the prior art, in both manual and processor controlled sewing and embroidery machines, it is difficult to incorporate embellishments upon the base fabric using an embroidery hoop. For example, a ribbon laid across the embroidery hoop may not readily lie adjacent to the base fabric, may change position during sewing or embroidery, and will often be lifted by or become entangled with the presser foot of the sewing machine. To aid in developing a design, embellishments need to be readily positioned upon the base fabric, and repositioned or manipulated as desired.
The precise positioning of the embellishment within a design is also problematic. In a manually fed sewing machine, the embellishment may move about during the sewing operation and the relative positions and orientations of embellishments is difficult to gauge by eye. In a processor controlled sewing machine, it is difficult to judge the position of an embellishment relative to the X-Y embroidery hoop coordinates. In the example above, a stitch pattern may be programmed into the machine to secure the ribbon to the base fabric. The command is then executed by the machine and a stitch pattern is performed securing the ribbon to the fabric. Upon post inspection, the stitch pattern may not be aligned or centered upon the ribbon producing an unattractive effect.
A design which incorporates both embroidery elements and embellishments is also problematic in the current art. The location of the embroidery element within the design is difficult to judge, and as above, the position of the embellishment relative to the embroidery element is difficult to control. Moreover, a portion of the embroidery element may cover the embellishment. The embroidery element typically has numerous stitch patterns which increases the opportunity for the embellishment to move or become entangled with the foot of the machine as the processor controls the movement of the embroidery hoop.
Due to the problems above in the prior art, designs incorporating texture via embellishments were often seen as too difficult to produce in both manually controlled and processor controlled machines. According, it would be advantageous to provide a device and method to allow the inclusion of embellishments within a design. Such a device would allow the ready positioning and re-positioning of embellishments when developing a design. In a manually operated sewing machine, the device would positively secure the embellishments in position during a sewing operation. The device would also allow embellishments to be used with a processor controlled sewing and embroidery machine. Such a device and method would allow the precise position of embellishment within the design and ensure the embellishment does not interfere with a subsequent stitching or embroidery operation. The device and method should also allow the use of embroidery elements adjacent and upon the embellishments. It is thus to such a texture hoop device and method that the present invention is primarily directed.
The disadvantages of the prior art are overcome by the present invention which, in one aspect, is a texture hoop for use in a sewing machine. The sewing machine has a presser foot and the texture hoop includes a fixture for securing the fabric. The fixture has a central opening and the fabric is stretched across the central opening and affixed to the fixture edges. The texture hoop has a means for securing at least one embellishment to the fixture. The embellishment laying upon the base fabric when secured in place. A stitch pattern can then be applied to sew the embellishment to the base fabric by manipulating the fixture with base fabric and secured embellishment beneath the sewing machine presser foot.
The means for securing the embellishment to the fixture may include a protruding lip on the fixture. A spring clip configured to engage the protruding lip. The embellishment may then be placed at a desired position upon the base fabric and clamped to the fixture at the protruding lip by the spring clip. The fixture may also include a plurality of recesses spaced adjacent the central opening and into which embellishments may be received and positively positioned. The recesses may be evenly spaced at intervals along the edges of the fixture. The means for securing the embellishment to the fixture may include securing the embellishment within at least one of the recesses spaced adjacent the central opening. The means for securing the embellishment to the fixture may include at least one of a spring clip, a magnet, a wedge, a pin, or a hook. The texture hoop fixture may include a first inner hoop and a second outer hoop. The inner and outer hoops have a central opening and are configured to have a base fabric stretched across the central opening and clamped between the first inner hoop and the second outer hoop.
In another aspect, the present invention presents a texture hoop fixture for use in a processor controlled sewing machine. The sewing machine has a processor controlled embroidery unit configured for moving the texture hoop fixture along perpendicular first and second coordinate axes relative to the sewing needle. The texture hoop fixture has a mounting lug for mounting the texture hoop upon the embroidery unit.
The texture hoop also has an inner and outer hoop with a central opening therein. The hoops are configured to have a base fabric stretched across the central opening and to be clamped between the inner and outer hoop. The position of the texture hoop fixture relative to the sewing needle is processor controlled along the perpendicular coordinate axes of the embroidery unit. Each coordinate axis being divided into coordinate units relative to an origin. The needle position relative to the fixture is then expressed in the processor as a first coordinate value along the first axis, and a second coordinate value along the second axis.
The texture hoop fixture also has a means for securing the embellishment to the texture hoop fixture and positional references for relating the location of embellishments positioned upon the base fabric to the units of each coordinate axis. When an embellishment is positioned in a desired location upon the base fabric and secured within the texture hoop fixture, a stitch pattern start and end location coordinate values to secure the embellishment to the base fabric may be determined by using the positional references of the texture hoop fixture.
The texture hoop fixture includes the coordinate units of the first and second coordinate axes and axes origin marked upon the texture hoop fixture. The positional references include a semi-transparent template. The template is configured to be received in the central opening of the fixture and has the coordinate units of the first and second coordinate axes marked upon it. The positional references also include a semi-transparent template configured to be received in the central opening of the fixture and having the coordinate origin of the first and second coordinate axes marked upon it.
The positional references on the texture hoop fixture include a plurality of recesses spaced around the central opening and into which embellishments may be received and positively positioned. The recesses are evenly spaced at positions corresponding to the coordinate units. The means for securing the embellishment to the texture hoop include securing the embellishment within at least one of the recesses spaced around the central opening. The means of securing the embellishment to the texture hoop include at least one of a spring clip, a magnet, a wedge, or a hook. The clamping means for securing the embellishment to the texture hoop may further include a protruding lip on the hoop fixture. One or more spring clips configured to engage the protruding lip. Embellishments may then be placed at a desired position on the base fabric and secured to the texture hoop at the protruding lip by the spring clips.
In another aspect, the present invention presents a method of sewing an embellishment to a base fabric using a processor controlled sewing machine and a texture hoop fixture. The sewing machine having a processor controlled embroidery unit configured for moving a texture hoop fixture along perpendicular first and second coordinate axes relative to the sewing needle. The texture hoop fixture has a mounting lug for mounting the texture hoop upon the embroidery unit and including a first inner hoop and a second outer hoop. The inner and outer hoops have a central opening therein across which a base fabric is stretched. The base fabric is clamped between the first inner hoop and the second outer hoop.
The position of the texture hoop fixture relative to the sewing needle is processor controlled along the perpendicular coordinate axes of the embroidery unit. Each coordinate axis is divided into coordinate units relative to an origin. The needle position relative to the fixture is then expressed in the processor as a first coordinate value along the first axis, and a second coordinate value along the second axis. Positioning an embellishment in a desired location upon the base fabric and securing the embellishment in position within the texture hoop fixture. A stitch pattern start location coordinate values and end location coordinate values are determined using positional references of the texture hoop fixture. The positional references relate the location of embellishments positioned upon the base fabric to the units of each coordinate axis. The stitch pattern begins at a start location corresponding to a starting first and second coordinate value and extends to an end location which corresponds to an ending first and second coordinate value. The sewing machine is then programmed with at least one stitch pattern to secure the embellishment to the base fabric which begins at the starting first and second coordinate value and extends to the ending first and second coordinate value. The sewing machine then executes the program to secure the embellishment to the base fabric using the stitch pattern.
In another aspect, the step of determining the stitch pattern start and end location coordinate values include using the coordinate units of the first and second coordinate axes as marked upon the texture hoop fixture. The step may also include using a semi-transparent template. The template is placed in the central opening of the texture hoop fixture and upon the base fabric and embellishment. The template has the coordinate units of the first and second coordinate axes marked thereon and the embellishment location is visible through the template. The step may also include referencing a plurality of recesses spaced around the central opening of the inner hoop and into which embellishments may be received and positively positioned. The recesses being evenly spaced at positions corresponding to the axes coordinate units.
In yet another aspect, the step of securing the embellishment within the texture hoop fixture includes using at least one of a spring clip, a magnet, a wedge, or a hook. The step may also include a protruding lip on the hoop fixture with one or more spring clips configured to engage the protruding lip. Placing an embellishment at a desired position on the base fabric and clamping the embellishment to the protruding lip using at least one of the spring clips.
In yet another aspect, the step of securing the embellishment within the texture hoop fixture includes a plurality of recesses spaced around the central opening and into which embellishments may be received and positively positioned, the recesses being evenly spaced at positions corresponding to the axes coordinate units. The step of securing the embellishment within the texture hoop fixture includes placing an embellishment within a recess and securing in place with at least one spring clip.
In another aspect, the present invention presents a method of sewing an embellishment to a base fabric using a sewing machine and a texture hoop. The sewing machine has a presser foot and is configured for manually feeding the fabric into the machine. A fixture is used which has a first inner hoop and a second outer hoop. The inner and outer hoops have a central opening. The base fabric to receive the embellishment is stretched across the central opening and clamped between the inner and outer hoops. Embellishments are then positioned upon the base fabric. Each embellishment is secured to the fixture to lie upon and adjacent the base fabric. The embellishment is then sewn to the base fabric with a stitch pattern by manipulating the fixture with base fabric and secured embellishment beneath the sewing machine presser foot.
In yet another aspect, the present invention presents a method of sewing an embellishment to a base fabric using a processor controlled sewing machine and a texture hoop fixture. The sewing machine having a processor controlled embroidery unit configured for moving a texture hoop fixture along perpendicular first and second coordinate axes relative to the sewing needle. The texture hoop fixture has a mounting lug for mounting the texture hoop upon the embroidery unit and including a first inner hoop and a second outer hoop. The inner and outer hoops have a central opening therein across which a base fabric is stretched. The base fabric is clamped between the first inner hoop and the second outer hoop.
The position of the texture hoop fixture relative to the sewing needle is processor controlled along the perpendicular coordinate axes of the embroidery unit. Each coordinate axis is divided into coordinate units relative to an origin. The needle position relative to the fixture is then expressed in the processor as a first coordinate value along the first axis, and a second coordinate value along the second axis. Selecting a position for an embroidery on the base fabric. Determining the embroidery location coordinate values by use of the positional references on the texture hoop fixture. The positional references relate the embroidery location to the units of each coordinate axis. Programming the sewing machine with a first and second coordinate value which corresponds to the embroidery location. Executing the program to sew the embroidery element upon the base fabric at the location coordinate value.
In yet another aspect, the step of determining the embroidery location coordinate values includes using a semi-transparent template. The template is placed in the central opening of the texture hoop fixture and upon the base fabric. The template has the coordinate units of the first and second coordinate axes marked thereon. The step may also include using the coordinate units of the first and second coordinate axes as marked upon the texture hoop fixture.
These and other aspects of the invention will become apparent from the following description of the preferred embodiments taken in conjunction with the following drawings. As would be obvious to one skilled in the art, many variations and modifications of the invention may be effected without departing from the spirit and scope of the novel concepts of the disclosure.
The texture hoop device and method provides a way to combine embellishments within a design while still using the processor controlled stitching and embroidery features of the machine. The device allows for the precise positioning and clamping of multiple embellishments within a design and ensures the embellishments will not interfere with subsequent sewing or embroidery operations. The device also aids in the layout and visualization of designs which use stitch patterns, embroidery elements and embellishments.
With reference to the figures in which like numerals represent like elements throughout,
As depicted in
In an alternative embodiment of the present invention, as depicted in
As depicted in
As further depicted in
The inner hoop 40 of the texture hoop fixture is depicted in cross-section in
The spring clip 160 of
As depicted in
When using a processor controlled machine, each X and Y coordinate axis of the embroidery unit is reference within the processor to have an origin at the center of the working envelope of the texture hoop fixture 20. Each coordinate axis therefore aligns with the template center reference lines 140 and with the coordinate axis origin at the center of the template. The fist embroidery element in the form of a Celtic knot is therefore centered at coordinate values of [−40] millimeters in the X axis and [40] millimeters in the Y axis. The second embroidery element 180 in the form of a wave pattern is centered at coordinate values of [30] millimeters in the X axis and [−20] millimeters in the Y axis. Using the positional references of the texture hoop fixture as depicted in
When using a processor controlled sewing machine, the user then must determine the start and end coordinate values of a stitch pattern to secure each embellishment in place. The user is aware that the X and Y coordinate axis origin corresponds to the number 8 position reference in both the horizontal and vertical on the inner hoop positional references 80, 90. In the case of the wide horizontal ribbon embellishment at the center of
Alternatively, the user may select to execute a stitch patter at the upper and lower edge of the ribbon. A stitch pattern down the top edge of the ribbon can be determined using the positional references to have a starting coordinate values of [−75] millimeters in the X and [3] millimeters in the Y. The stitch pattern end coordinates values would be [75] in the X axis and [3] millimeters in the Y axis. A stitch pattern to secure the lower edge of the ribbon would run from X-Y coordinates [−75] [−3] at the start, to [75] [−3] at the end. The texture hoop user may then readily program the machine to execute the desired stitch patterns using the start and end coordinates above. Upon execution of the program, the ribbon will be neatly stitched to the base fabric in the desired location and spacing with upper and lower stitch patterns 190. The start and end stitch pattern coordinate values for the remaining embellishments may be determined and programmed into the machine and all embellishments stitched to the base fabric in the same sewing operation.
In
A tool for the removal of spring clamps from the texture hoop is depicted in
While there has been shown a preferred embodiment of the present invention, it is to be understood that certain changes may be made in the forms and arrangement of the elements and steps of the method for the texture hoop fixture without departing from the underlying spirit and scope of the invention.
This application claims the benefit of U.S. Provisional Application Ser. No. 61/213,353, filed on Jun. 1, 2009, the entirety of which is hereby incorporated herein by reference.
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