Headgear frame apparatus with auxiliary rollers

Sewing – Special machines – Embroidering

Reexamination Certificate

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Reexamination Certificate

active

06202581

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a headgear frame apparatus of a sewing machine for embroidering a headgear.
2. Description of the Related Art
As shown in
FIG. 5
, a conventional headgear frame apparatus
105
is provided with: a headgear frame
100
for clamping a headgear
1
; a rotary drive frame
106
for fitting said headgear frame
100
replaceably thereon on the side of a sewing machine; a support frame
109
for supporting said rotary drive frame
106
rotatably; and a guide plate
110
fixed on said support frame
109
and extending to the side of a cylindrical bed
111
of the sewing machine. The guide plate
110
pushes forward boundary corner portion
7
between the circumferential portion
5
and the crest portion
6
of the headgear
1
at its leading end edge thereby to tense the circumferential portion (or a range to be embroidered) of the headgear
1
over the cylindrical bed
111
.
Here, the circumferential portion
5
and the crest portion
6
of the headgear
1
are formed by stitching cloths
1
a
, each of which is cut in a generally triangular shape, and reinforcing cloth bands are so stitched to the inner side of the headgear
1
as to cover that stitched portions, so that band-shaped ridges
8
are formed along the stitched portions. When the headgear
1
is turned at a high speed during the embroidering operation by the rotary drive frame
106
, the edge portion (especially the leading end side) of the guide plate
110
is caught by that ridges
8
(especially in the vicinities of the boundary corner portion
7
) to cause problems that (1) the boundary corner portion
7
is damaged, and that (2) the side of the crest portion
6
of the headgear
1
cannot follow the rotation of the rotary drive frame
106
to twist the circumferential portion
5
of the headgear
1
.
These problems make it difficult to push the boundary corner portion
7
sufficiently with the leading end edge of the guide plate
110
. As a result, the tension of the range to be embroidered is insufficient to wrinkle the headgear
1
during the embroidering operation and shrink the cloth of the headgear by the embroidering operation so that the headgear
1
is poorly stitched.
SUMMARY OF THE INVENTION
An object of the invention is to provide a headgear frame apparatus capable of holding a headgear with a range to be embroidered being sufficiently tensed.
In the invention, therefore, there are taken the following means, as will be individually described with reference to
FIGS. 1
to
4
.
According to an aspect of the invention, there is provided a headgear frame apparatus
9
characterized in that auxiliary rollers
42
for rotating in abutment against boundary corner portion
7
between a circumferential portion
5
and a crest portion of a headgear
1
clamped by a headgear frame
10
are rotatably disposed sideways (i.e., on the left and right sides in the shown embodiment) of a cylindrical bed
91
of a sewing machine.
According to another aspect of the invention, there is provided a headgear frame apparatus
9
comprising: a headgear frame
10
for clamping a headgear
1
; a rotary drive frame
30
for fitting said headgear frame
10
replaceably thereon on the side of a sewing machine; and a support frame
40
for supporting said rotary drive frame
30
rotatably, characterized:
in that said support frame
40
is provided with (two in the shown embodiment) elastic plates
41
extending to the side (i.e., the left and right sides in the shown embodiment) of a cylindrical bed
91
of the sewing machine and capable of warping in the directions close to and apart from the cylindrical bed
91
; and
in that the elastic plates
41
are provided rotatably with auxiliary rollers
42
for rotating in abutment against a boundary corner portion
7
between a circumferential portion
5
and a crest portion
6
of the headgear
1
clamped by the headgear frame
10
.
The headgear
1
includes a cap, a hat, a beret and any others which can be embroidered and worn on the head.
As in the shown embodiment, it is preferable that the auxiliary rollers
42
are provided with semispherical faces
43
or conical faces for fitting on the boundary corner portion
7
.
As in the shown embodiment, it is preferable that the elastic plates
41
are provided with contact pit faces for contacting with the circumferential portion
5
of the headgear
1
.
As in the shown embodiment, it is preferable that the contact pit faces
44
are adjusted to be positioned generally on the extension of the arcuate surface of a throat plate
92
of the cylindrical bed
91
.
As in the shown embodiment, it is preferable that the elastic plates
41
are mounted at an adjustable position on a stay
45
projected from the support frame
40
by means of screws
46
. By these positional adjustments, the auxiliary rollers
42
can be adjusted to abut snugly against the boundary corner portion
7
, and the contact pit faces
44
can be adjusted to be positioned generally on the extensions of the arcuate surface of the throat plate
92
.
The following effects can be achieved according to the headgear frame apparatus
9
:
Since the auxiliary rollers
42
abut against the boundary corner portion
7
of the headgear
1
, the headgear
1
is tensed longitudinally to be hardly wrinkled, and the cloth being embroidered is little shrunk. As a result, the headgear
1
is decoratively embroidered; and
When the headgear
1
is to be embroidered in the turning direction, moreover, the auxiliary rollers
42
come, while rotating, into abutment against the boundary corner portion
7
so that they will not damage the boundary corner portion
7
. Because of little friction (or drag) at this time, moreover, the motion of the headgear
1
is smoothed in the turning direction in the vicinities of the pits (i.e., the contact pit faces
44
).
Further objects of this invention will become evident upon an understanding of the illustrative embodiments described below. Various advantages not specifically referred to herein but within the scope of the instant invention will occur to one skilled in the art upon practice of the presently disclosed invention. The following examples and embodiments are illustrative and not seen to limit the scope of the invention.


REFERENCES:
patent: 5553560 (1996-09-01), Tajima et al.
patent: 5915314 (1999-06-01), Moore, III
patent: 6065413 (2000-05-01), Kawaguchi
patent: 6119609 (2000-09-01), Kawaguchi et al.

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