FELTING ASSEMBLY FOR A SEWING MACHINE
20200354870 ยท 2020-11-12
Inventors
Cpc classification
D05B23/00
TEXTILES; PAPER
International classification
Abstract
Felting assembly for a sewing machine. In some embodiments, a felting assembly may include a felting needle clamp including one or more felting needles. The felting assembly may also include a needle plate defining one or more needle openings arranged to allow the one or more felting needles to reciprocate therethrough. The needle plate may be configured to be attached to a sewing machine over a rotary hook of the sewing machine. The felting assembly may also include a connector configured to attach the felting needle clamp to a needle bar of the sewing machine such that the felting needle clamp is offset from the rotary hook of the sewing machine to avoid the one or more felting needles from contacting the rotary hook when the one or more felting needles are reciprocated through the one or more needle openings in the needle plate.
Claims
1. A felting assembly for a quilting machine comprising: a felting needle clamp including one or more felting needles; a needle plate defining one or more needle openings arranged to allow the one or more felting needles to reciprocate therethrough, the needle plate configured to be attached to a quilting machine over a rotary hook of the quilting machine; and a connector configured to attach the felting needle clamp to a needle bar of the quilting machine such that the felting needle clamp is offset from the rotary hook of the quilting machine to avoid the one or more felting needles from contacting the rotary hook when the one or more felting needles are reciprocated through the one or more needle openings in the needle plate.
2. The felting assembly of claim 1, further comprising a hopping foot configured to be attached to a presser bar of the quilting machine, the hopping foot defining a bowl, the hopping foot configured to press fabric down against the needle plate.
3. The felting assembly of claim 2, wherein the bowl surrounds and defines a multi-needle opening configured to allow the one or more felting needles to reciprocate therethrough.
4. The felting assembly of claim 3, wherein the bowl further defines an open gap configured such that the hopping foot avoids the connector and the needle bar.
5. The felting assembly of claim 2 wherein an outer edge of the bowl is configured to flatten a fibrous material against the fabric as the bowl is reciprocated over the fibrous material and the fabric.
6. The felting assembly of claim 1, wherein the one or more needle openings defined in the needle plate include a first set of one or more needle openings arranged to be positioned beneath the one or more felting needles when the needle plate is attached to the quilting machine in a first orientation and a second set of one or more needle openings arranged to be positioned beneath the one or more felting needles when the needle plate is attached to a second quilting machine in a second orientation.
7. The felting assembly of claim 1, wherein the connector defines a first opening configured to receive and attach to the needle bar and a second opening configured to receive and attach to the felting needle clamp.
8. The felting assembly of claim 1, wherein the quilting machine is a long-arm quilting machine.
9. A felting assembly for a quilting machine comprising: a felting needle clamp including one or more felting needles, the felting needle clamp configured to be coupled to a needle bar of a quilting machine; a needle plate defining one or more needle openings arranged to receive the one or more felting needles, the needle plate configured to be attached to the quilting machine; and a hopping foot defining a felting opening configured to allow the one or more felting needles to reciprocate therethrough, the hopping foot configured to be coupled to a presser bar of the quilting machine such that the hopping foot is configured to reciprocate between pressing fabric down against the needle plate before the one or more felting needles have reciprocated into the fabric and lifting off of the fabric after the one or more felting needles have reciprocated out of the fabric.
10. The felting assembly of claim 9, wherein: the needle plate is configured to be attached to the quilting machine over a rotary hook of the quilting machine; and the felting assembly further comprises a connector configured to couple the felting needle clamp to the needle bar of the quilting machine such that the felting needle clamp is offset from the rotary hook of the quilting machine to avoid the one or more felting needles from contacting the rotary hook when the one or more felting needles are reciprocated through the one or more needle openings in the needle plate.
11. The felting assembly of claim 10, wherein the hopping foot defines a bowl surrounding the felting opening.
12. The felting assembly of claim 11, wherein the bowl defines an open gap configured such that the hopping foot avoids the connector and the needle bar.
13. The felting assembly of claim 11, wherein an outer edge of the bowl is configured to flatten a fibrous material against the fabric as the bowl is reciprocated over the fibrous material and the fabric.
14. The felting assembly of claim 9, wherein the quilting machine is a long-arm quilting machine.
15. A quilting machine comprising: a frame; a needle bar coupled to the frame and configured to reciprocate; a rotary hook coupled to the frame and configured to rotate; and a felting assembly including: a felting needle clamp including one or more felting needles; a needle plate defining one or more needle openings arranged to allow the one or more felting needles to reciprocate therethrough, the needle plate attached to the frame over the rotary hook; and a connector attaching the felting needle clamp to the needle bar such that the felting needle clamp is offset from the rotary hook to avoid the one or more felting needles from contacting the rotary hook while the one or more felting needles are reciprocated through the one or more needle openings in the needle plate.
16. The quilting machine of claim 15, wherein the quilting machine is a long-arm quilting machine.
17. The quilting machine of claim 15, further comprising: a presser bar coupled to the frame and configured to reciprocate; and a hopping foot attached to the presser bar and defining a felting opening configured to allow the one or more felting needles to reciprocate therethrough, the hopping foot configured to reciprocate between pressing fabric down against the needle plate before the one or more felting needles have reciprocated into the fabric and lifting off of the fabric after the one or more felting needles have reciprocated out of the fabric.
18. The quilting machine of claim 17, wherein: the hopping foot defines a bowl that surrounds the felting opening; the bowl defines an open gap configured such that the hopping foot avoids the connector and the needle bar; and an outer edge of the bowl is configured to flatten a fibrous material against the fabric as the bowl is reciprocated over the fibrous material and the fabric.
19. The quilting machine of claim 15, wherein the one or more needle openings defined in the needle plate are offset from a plane defined by a center axis of the needle bar and a length of the frame.
20. The quilting machine of claim 15, wherein the one or more needle openings defined in the needle plate include a first set of one or more needle openings arranged to be positioned beneath the one or more felting needles when the needle plate is attached to the quilting machine in a first orientation and a second set of one or more needle openings arranged to be positioned beneath the one or more felting needles when the needle plate is attached to a second sewing machine in a second orientation.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Example embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
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DETAILED DESCRIPTION
[0027] In some applications, it may be advantageous to retrofit a sewing machine with the functionality of a felting machine by generally replacing a reciprocating sewing needle with multiple reciprocating felting needles. However, such a retrofit may be difficult. For example, one difficulty involves felting needles (which may include barbs instead of an eye that is configured to be threaded with a top thread) being clustered in sets of multiple felting needles, and sewing machines may not be configured to accommodate multiple-needle configurations. For example, a typical needle plate of a sewing machine may only include a single hole for a single sewing needle, which may not accommodate multiple felting needles. Also, another difficulty involves a sewing machine typically including a rotary hook under the needle plate that is configured to repeatedly thread bottom thread (from a bobbin) through loops of top thread (threaded on the sewing needle) each time the sewing needle reciprocates below the needle plate. However, when the single sewing needle is replaced with multiple felting needles that also reciprocate below the needle plate, these felting needles may come into contact with the rotary hook unnecessarily (because the rotary hook is only used during sewing and is not used during felting) and thereby damage the felting needles and/or the rotary hook.
[0028] Some embodiments disclosed herein include a felting assembly configured to retrofit a sewing machine for felting. In some embodiments, the felting assembly may include a felting needle clamp including one or more felting needles. The felting assembly may also include a needle plate defining one or more needle openings arranged to allow the one or more felting needles to reciprocate therethrough. The needle plate may be configured to be attached to a sewing machine over a rotary hook of the sewing machine. The felting assembly may also include a connector configured to attach the felting needle clamp to a needle bar of the sewing machine such that the felting needle clamp is offset from the rotary hook of the sewing machine to avoid the one or more felting needles from contacting the rotary hook when the one or more felting needles are reciprocated through the one or more needle openings in the needle plate. The felting assembly may also include a hopping foot configured to be attached to a presser bar of the sewing machine. The hopping foot may define a bowl and be configured to press fabric and/or a fibrous material down against the needle plate.
[0029] Therefore, some embodiments disclosed herein may enable a sewing machine to function as both a sewing machine and a felting machine, and/or to be retrofitted as a felting machine, by accommodating one or more felting needles instead of only a single sewing needle, and by enabling the one or more felting needles to avoid coming into contact with the rotary hook during felting (e.g., even where the rotary hook is left in place and rotates during felting).
[0030]
[0031] The sewing machine 100 of
[0032] As disclosed in
[0033] To facilitate use of the sewing machine 100 by a user, the sewing machine 100 may be mounted on a fabric frame 140. The fabric frame 140 may include legs 142 and a table top 144. A sewing machine carriage 146 may be mounted on the table top 144 and the sewing machine 100 may be mounted in the sewing machine carriage 146. This configuration may allow a user to grasp the handlebars 172 that are attached to the frame 102 of the sewing machine 100 and then reposition the sewing machine 100 while sewing over the fabric 150 (such as a backing fabric, a quilt-top fabric, and a batting fabric) spooled on spools of the fabric frame 140. When mounted to the fabric frame 140, the sewing machine 100 is configured as a maneuverable sewing machine (sometimes also referred to as a stand-up sewing machine) in which the user repositions the sewing machine 100 in a desired direction over one or more layers of fabric, such as the fabric 150, which remains stationary due to being mounted in the fabric frame 140. Although three layers of fabric are illustrated in
[0034] In some embodiments, a user may periodically replace a typical sewing needle and other components that would typically be employed in the sewing machine 100 with the felting assembly 120, and vice versa, to switch between using the sewing machine 100 as a sewing machine and as a felting machine. The felting assembly 120 may include a connector 122, a needle clamp 124, and felting needles 126. Additionally or alternatively, in some embodiments, the felting assembly 120 may include the hopping foot 130, which may replace a typical foot (e.g. replace a typical presser foot or a typical hopping foot). The hopping foot 130 may include a bowl 132, a gap 134 (see
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[0038] In some embodiments, the needle clamp 124 may be configured to receive and attach to multiple felting needles 126. In some embodiments, the needle clamp 124 may temporarily attach to each of the felting needles 126 such that any one of the felting needles 126 may be replaced. As an example of how the needle clamp 124 may attach to the felting needles 126, the needle clamp 124 may define multiple needle-base openings on the underside of the needle clamp 124 (e.g. with one needle-base opening corresponding to each of the felting needles 126). The needle clamp 124 may further include multiple set screws that may be tightened to retain the felting needles 126 in the needle-base openings, and that may be loosened so that the felting needles 126 can be removed from the needle-base openings. In some embodiments, the arrangement of the needle-base openings on the underside of the needle clamp 124 may correspond to an arrangement of needle openings in the needle plate 116.
[0039] In some embodiments, the felting needles 126 may include barbs configured to pull fibers of a material with the felting needles 126 as the felting needles 126 pass through the material.
[0040] In some embodiments, the connector 122 may be configured to couple the needle clamp 124 to the needle bar 104. The connector 122 may define a first opening configured to receive and attach to the needle bar 104 and a second opening configured to receive and attach to the needle clamp 124. As an example of how the connector 122 may attach to the needle bar 104, (or the needle clamp 124) the first opening may include an interior rim configured to fit within a groove on the needle bar 104. The connector 122 may split in two parts allowing the needle bar 104, including the grooved portion, to fit into the first opening. Thereafter, the connector 122 may be reassembled such that the interior rim may fit within the groove of the needle bar 104 to retain the needle bar 104. In these or other embodiments, the connector 122 may include screws that may retain the two parts of the connector 122 together and which may be loosened or removed such that the connector 122 may be split into its two parts.
[0041] In some embodiments, the connector 122 may be configured to offset the felting needles 126 from the needle bar 104 and/or a rotary hook and/or a bobbin of the sewing machine 100 (see
[0042] In some embodiments, the hopping foot 130 may be configured to press the fabric 150 and/or a fibrous material 152 (see
[0043] In some embodiments, the hopping foot 130 may include the bowl 132 which may include an outer edge that may be configured to flatten the fibrous material 152 and/or the fabric 150 (see
[0044] In some embodiments, the hopping foot 130 may define a multi-needle opening sized and arranged to allow the felting needles 126 to reciprocate through the hopping foot 130.
[0045] In some embodiments, the gap 134 may be defined by the bowl 132 such that the hopping foot 130 does not contact the connector 122 or the needle bar 104. For example, while both the needle bar 104 and the presser bar 106 are reciprocated down, pushing the connector 122 and the hopping foot 130 down, the connector 122 and/or an end of the needle bar 104 may fit within the gap 134 such that the connector 122 and the presser bar 106 do not contact (e.g., interfere with) the hopping foot 130, as disclosed in
[0046] In some embodiments, the foot connector 136 may be configured to receive and attach to the presser bar 106. As an example of how the hopping foot 130 may be connected to the presser bar 106, the foot connector 136 may include a screw to attach the foot connector 136 to the presser bar 106.
[0047] In some embodiments, the needle plate 116 may be configured to sit below the needle bar 104 and the presser bar 106, and to sit above the rotary hook 160 and the bobbin (see
[0048] In some embodiments, the needle plate 116 may define a first set of needle openings and a second set of needle openings. Thus, the needle plate 116 may be configured to be attached to the sewing machine 100 (see
[0049]
[0050] The sewing machine 400 of
[0051] As disclosed in
[0052] To facilitate use of the sewing machine 400 by a user, the sewing machine 400 may be mounted on the table 440. The table 440 may include legs 442 and a table top 444. The table top 444 may include a recess 446 into which the sewing machine 400 may be mounted such that the top surface of the needle plate 416 is generally flush with the top surface of table top 444. When mounted to the table 440, the sewing machine 400 is configured as a stationary sewing machine (sometimes also referred to as a sit-down sewing machine) in which the sewing machine 400 is configured to remain stationary during operation while a user repositions the fabric 450-452 in a desired direction underneath the needle. Although two layers of fabric are illustrated in
[0053] In some embodiments, a user may periodically replace a typical sewing needle and other components that would typically be employed in the sewing machine 400 with the felting assembly 420, and vice versa, to switch between using the sewing machine 400 as a sewing machine and as a felting machine. The felting assembly 420 may include the connector 122, the needle clamp 124, the felting needles 126, or the needle plate 116, or some combination thereof, each of which is described above in connection with
[0054] Additionally or alternatively, in some embodiments, the felting assembly 420 may include a presser foot 431, which may replace a typical foot. The presser foot 431 may be similar to the hopping foot 130 of
[0055]
[0056]
[0057] Although a needle clamp is disclosed herein that includes multiple felting needles, in some embodiments a needle clamp may instead include only a single felting needle, or may be replaced by a single felting needle. Further, although a needle plate is disclosed herein that includes multiple openings arranged to allow for multiple felting needles to reciprocate therethrough, in some embodiments a needle plate may instead include only a single needle opening arranged to allow for only a single felting needle to reciprocate therethrough. Also, although a needle plate is disclosed herein that is configured with to be attached to a sewing machine in multiple orientations, in some embodiments a needle plate may instead be configured to be attached to a sewing machine in only a single orientation. Further, a hopping foot is disclosed herein that is bowl shaped, in some embodiments a hopping foot may have another shape.
[0058] Embodiments of the motors, controllers, and sensors described herein may be implemented using non-transitory computer-readable media for carrying or having computer-executable instructions or data structures stored thereon. Such computer-readable media may be any available media that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, such computer-readable media may include non-transitory computer-readable storage media including RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other storage medium which may be used to carry or store one or more desired programs having program code in the form of computer-executable instructions or data structures and which may be accessed and executed by a general-purpose computer, special-purpose computer, or virtual computer such as a virtual machine. Combinations of the above may also be included within the scope of computer-readable media.
[0059] Computer-executable instructions comprise, for example, instructions and data which, when executed by one or more processors, cause a general-purpose computer, special-purpose computer, or virtual computer such as a virtual machine to perform a certain method, function, or group of methods or functions. Although the subject matter has been described in language specific to structural features and/or methodological steps, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or steps described above. Rather, the specific features and steps described above are disclosed as example forms of implementing the claims.
[0060] As used herein, the term program may refer to software objects or routines that execute on a computing system. The different programs described herein may be implemented as objects or processes that execute on a computing system (e.g., as separate threads).
[0061] All examples and conditional language recited herein are intended for pedagogical objects to aid the reader in understanding the example embodiments and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically-recited examples and conditions.