Sewing – Special machines – Embroidering
Reexamination Certificate
2000-03-29
2001-08-14
Nerbun, Peter (Department: 3741)
Sewing
Special machines
Embroidering
C112S470180
Reexamination Certificate
active
06273012
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
FIGS. 10 and 11
, a first 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.
When the support frame
109
is to be mounted on the sewing machine, a mounting bracket
113
is fixed on the upper face of a horizontal drive frame (or a pantograph)
112
. On the back face of the bracket
113
, there is mounted a rotary drive slide rail
114
having a rail groove
114
a
, in which the support frame
109
is fitted through bearing rollers
115
.
According to this structure, however, the support frame
109
can be easily mounted, but a clearance
116
is necessarily required between the rail groove
114
a
and the bearing rollers
115
. This clearance
116
leaves a longitudinal looseness to affect the embroidery adversely. At a high speed (e.g., 750 rpm), moreover, the headgear frame
100
oscillates vertically to break the needle frequently or to blot the finish of the embroidery.
As shown in
FIG. 12
, on the other hand, a second conventional headgear frame apparatus
150
is provided with: a guide rail
151
a
projected below the root and end portion of a cylindrical bed
151
in parallel with the cylindrical bed
151
; a support frame
153
supported slidably along said guide rail
151
a
and rotatably supporting a rotary drive frame
152
fitting the (not-shown) headgear frame replaceably thereon for clamping the headgear; a transmission mechanism
154
for transmitting a driving force to the rotary drive frame
152
; and a horizontal drive frame
155
for driving the rotary drive frame
152
longitudinally through the support frame
153
and for driving the rotary drive frame
152
rotationally through the transmission mechanism
154
.
The support frame
153
is composed of a front side member
153
a
positioned on the front side of the horizontal drive frame
155
, and a back side member
153
b
positioned on the back side of the horizontal drive frame
155
. The back side member
153
b
is jointed to the front side member
153
a
through joint screws
153
c.
By loosening the joint screws
153
c
to remove the back side member
153
b
from the front side member
153
a
and by removing a joint member
156
joining the transmission mechanism
154
and the horizontal drive frame
155
, moreover, the support frame
153
, the rotary drive frame
152
and the transmission mechanism
154
can be removed from the horizontal drive frame
155
.
The transmission mechanism
154
is provided with a base member
157
joined to the horizontal drive frame
155
by the joint member
156
and extending transversely, and a wire
158
wound by one turn on the circumferential wall of the rotary drive frame
152
and fixed at both end portions, individually, on the left and right end portions of the base member
157
. The wire
158
is fixed at its generally intermediate portion on the circumference wall of the lower end side of the rotary drive frame
152
through a clamping member
159
so that when the horizontal drive frame
155
is moved transversely, the rotation is applied to the rotary drive frame
152
through the wire
158
.
In order to transport the sewing machine, to replace the headgear frame apparatus
150
by a holding frame for working a cylindrical cloth other than the headgear or to replace the headgear frame apparatus
150
suitably according to the headgear
1
, this headgear frame apparatus
150
is constructed such that when the joint member
156
is removed, the support frame
153
, the rotary drive frame
152
and the transmission mechanism
154
can be removed from the horizontal drive frame
155
.
After these removals, however, there arises a problem that the base member
157
of the transmission mechanism
154
is brought into an unstable state where it is connected to the rotary drive frame
152
through the wire
158
.
SUMMARY OF THE INVENTION
A first object of the invention is to provide a headgear frame apparatus which can be mounted without any looseness on a horizontal drive frame.
A second object of the invention is to provide a headgear frame apparatus which can prevent a support frame and a transmission mechanism from being disintegrated, when the support frame, a rotary drive frame and the transmission mechanism are removed from the horizontal drive frame.
A third object of the invention is to provide a headgear frame apparatus which can be mounted without any looseness on a horizontal drive frame and which can prevent a support frame and a transmission mechanism from being disintegrated, when the support frame, a rotary drive frame and the transmission mechanism are removed from the horizontal drive frame.
In the first headgear frame apparatus for a sewing machine of a first aspect of the invention, therefore, there are taken the following means, as will be individually described with reference to
FIGS. 1
to
4
.
According to the first 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; a horizontal drive frame
60
for applying a rotation and a longitudinal drive to said rotary drive frame
30
through a medium such as a wire
61
; and a support frame
40
engaging in a relative displacement with said horizontal drive frame
60
for supporting the rotary drive frame
30
rotatably, characterized:
in that the support frame
40
is constructed to include a front side member
47
positioned on the front side of the horizontal drive frame
60
and a back side member
48
positioned on the back side of the horizontal drive frame
60
; and
in that the front side member
47
and the back side member
48
are jointed such that the horizontal drive frame
60
is clamped between one or more front side bearing roller
49
mounted rotatably on the front side member
47
and one or more back side bearing rollers
50
mounted rotatably on the back side member
48
.
The headgear
1
includes a cap, a hat, a beret and any others which can be embroidered and worn on the head.
There can be exemplified a mode in which the front side member
47
and the back side member
48
are joined by inserting one or more joint screws
52
which are screwed in one of them (e.g., the front side member
47
in the shown embodiment) into one or more U-grooves
51
formed in the other (e.g., the back side member
48
in the shown embodiment), and by fastening said joint screw
52
.
There can also be exemplified either a mode in which one of the front side bearing roller
49
and the back side bearing roller
50
is one whereas the other is two (to provide the so-called “three-point support” without any looseness) or a mode in which both of them are two or more. In the shown embodiment, the front side bearing rollers
49
are provided by two whereas the back side bearing roller
50
is provided by one.
The support frame
40
is mounted in the following manner:
The front side member
47
is mounted in front of the horizontal drive frame
60
;
The back side member
48
is inserted horizontally from the back side of the horizontal drive frame
60
below the horizontal drive frame
60
toward the front side member
47
;
At this time, the joint screws
52
are inserted in the U-grooves
51
at the leading end portions of the back side member
48
. In this state, the horizontal drive frame
60
(at its front face and back face) is clamped between the front side bearing rollers
49
and the back side bearing ro
Hattori Osamu
Ozeki Masahiko
Kabushikikaisha Barudan
Nerbun Peter
Pillsbury & Winthrop LLP
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