JPH03212288A - Bobbin cylinder for sewing machine - Google Patents

Bobbin cylinder for sewing machine

Info

Publication number
JPH03212288A
JPH03212288A JP799690A JP799690A JPH03212288A JP H03212288 A JPH03212288 A JP H03212288A JP 799690 A JP799690 A JP 799690A JP 799690 A JP799690 A JP 799690A JP H03212288 A JPH03212288 A JP H03212288A
Authority
JP
Japan
Prior art keywords
bobbin
hook
protrusion
coating layer
covering layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP799690A
Other languages
Japanese (ja)
Other versions
JPH0693950B2 (en
Inventor
▲廣▼瀬 徳三
Tokuzo Hirose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirose Manufacturing Co Ltd
Original Assignee
Hirose Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hirose Manufacturing Co Ltd filed Critical Hirose Manufacturing Co Ltd
Priority to JP2007996A priority Critical patent/JPH0693950B2/en
Publication of JPH03212288A publication Critical patent/JPH03212288A/en
Publication of JPH0693950B2 publication Critical patent/JPH0693950B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Sewing Machines And Sewing (AREA)

Abstract

PURPOSE:To prevent a bobbin from racing when sewing operation is stopped by forming a covering layer made of fluororesin, which is projected toward the opening end from the inner surface of the bottom of an inner bobbin cylinder. CONSTITUTION:A covering layer made of fluororesin is formed on the inner surface of the bottom of an inner bobbin cylinder 5 so as to project from the inner surface of the bottom to the opening end of the inner bobbin cylinder 5. That is, a first covering layer 8 made of fluororesin and projecting from the inner surface of the inner bobbin cylinder toward the opening end of the same is formed over the entire periphery of the inner bobbin cylinder. Further, a covering layer made of fluororesin is formed on the outer surface of a flange 22 of a bobbin 8. Since the first covering layer 18 is formed on the inner surface of the bottom of the inner bobbin cylinder 5 and since the second covering layer is formed on the outer surface of the flange 22 of the bobbin 8, the second covering layer on the bobbin 8 which is stored in the inner bobbin cylinder 8 makes contact with the second layer. Thereby it is possible to prevent the bobbin from racing by applying a braking force to the bobbin when sewing operation is stopped.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ミシンのがまに関し、もつと詳しくは、内が
ま内に収納されるボビンの縫製動作を停止したときにお
ける空転を防止するための構造に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sewing machine hook, and more specifically, to a sewing machine hook for preventing a bobbin stored in the inner hook from idling when the sewing operation is stopped. Regarding structure.

従来の技術 たとえば垂直全回転かまは、水平な回転軸線まわりに回
転駆動される下軸に外かまが固定され、この外がまには
内がまが収納される。この内がまにはボビンケースが着
脱可能に装着され、ボビンケース内には下糸が巻回され
たボビンが収納されている。このボビンは、前記内かま
に開口端側向けて立設されたスタッドに回転自在に嵌着
されており、縫製動作時には縫い目の形成に伴って下糸
が引出され、この下糸の張力によって前記ボビンがその
回転軸線まわりに回転する。このようなボビンは、前記
スタッドの基端部近傍の内かまの底に接触しているだけ
であり、したがって縫製動作停止時にボビンが空まわり
してしまい、これによってボビンケース内でそのボビン
に巻回された下糸が不所望に繰出されてもつれなどを生
じる原因となっていた。
In the conventional technology, for example, a vertical full-rotation hook, an outer hook is fixed to a lower shaft that is driven to rotate about a horizontal rotation axis, and an inner hook is housed in the outer hook. A bobbin case is removably attached to this inner case, and a bobbin around which a bobbin thread is wound is stored in the bobbin case. This bobbin is rotatably fitted to a stud that is erected toward the open end of the inner hook, and during sewing operation, the bobbin thread is pulled out as a seam is formed, and the tension of the bobbin thread causes the bobbin to The bobbin rotates about its axis of rotation. Such a bobbin only contacts the bottom of the inner hook near the proximal end of the stud, so the bobbin spins idle when the sewing operation is stopped, which causes the bobbin to be wound in the bobbin case. The spun bobbin thread is undesirably let out, causing tangles and the like.

発明が解決しようとする課題 したがって本発明の目的は、縫製動作を停止したときに
おけるボビンの空まわりを防止することができるように
したミシンのかまを提供することである。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hook for a sewing machine that can prevent the bobbin from rotating idly when the sewing operation is stopped.

課題を解決するための手段 本発明は、内かまの底の内面に、その内面から開口端側
に向けて突出する突起を設け、この突起の表面に、フッ
化樹脂から成る被覆層を形成したことを特徴とするミシ
ンのかまである。
Means for Solving the Problems The present invention provides a protrusion projecting from the inner surface toward the open end on the inner surface of the bottom of the inner pot, and a coating layer made of fluorinated resin is formed on the surface of the protrusion. There is a sewing machine head that is characterized by this.

また本発明は、ボビンのフランジの外表面に、フッ化樹
脂から成る被覆層を形成したことを特徴とするミシンの
かまである。
The present invention also provides a sewing machine head characterized in that a coating layer made of a fluororesin is formed on the outer surface of the flange of the bobbin.

さらに本発明は、内かまの底の内面に、その内面から開
口端側に向けて突出する突起を設け、この内がまに収納
されるボビンのフランジ外表面に、前記突起に対向する
環状のフッ化樹脂から成る被覆層を形成したことを特徴
とするミシンのかまである。
Further, in the present invention, a protrusion is provided on the inner surface of the bottom of the inner hook, and the protrusion protrudes from the inner surface toward the open end, and the outer surface of the flange of the bobbin to be accommodated in the inner hook is provided with an annular protrusion opposite to the protrusion. There is a sewing machine head characterized by forming a coating layer made of a fluorinated resin.

作  用 本発明に従えば、内かまの底には開口端側に向けて突出
する突起が設けられ、この突起の表面に被覆層が形成さ
れるので、内かま内に収納されたボビンの前記底側に配
置されている一方のフランジの外表面が前記被覆層に接
触し、この被覆層と前記一方のフランジとの摩擦力によ
って前記ボビンの空転を防止することができる。しかも
前記被覆層はフッ化樹脂から成るので、縫製動作時にお
けるボビンにむやみに大きな摩擦力が作用することはな
く、ボビンを円滑に回転することが可能である。したが
って下糸には大きな張力が発生することはない。
According to the present invention, the bottom of the inner hook is provided with a protrusion that protrudes toward the open end side, and the coating layer is formed on the surface of this protrusion, so that the bobbin accommodated in the inner hook has a projection that protrudes toward the open end. The outer surface of one flange disposed on the bottom side contacts the coating layer, and the frictional force between the coating layer and the one flange can prevent the bobbin from idling. Moreover, since the coating layer is made of fluorinated resin, an unnecessarily large frictional force is not applied to the bobbin during sewing operations, and the bobbin can be rotated smoothly. Therefore, no large tension is generated in the bobbin thread.

また本発明に従えば、ボビンのフランジの外表面にはフ
ッ化樹脂から成る被覆層が形成されるので、このボビン
を内かまに収納した状態において縫製動作を停止しても
、内かまの底の表面に前記ボビンの被覆層が接触し、縫
製動作を停止したときに、前記ボビンに制動力を作用さ
せてより一層空まわりを防止することができる。
Further, according to the present invention, since a coating layer made of fluoride resin is formed on the outer surface of the flange of the bobbin, even if the sewing operation is stopped while the bobbin is stored in the inner hook, the bottom of the inner hook still remains. When the coating layer of the bobbin comes into contact with the surface of the bobbin and the sewing operation is stopped, a braking force is applied to the bobbin to further prevent free spinning.

さらに本発明に従えば、内かまの底の内面には突起が形
成され、この突起にはフッ化樹脂から成る被覆層が形成
されたボビンのフランジが当接する。これによってもま
た、縫製動作を停止したときに、前記ボビンに制動力を
作用させてより一層確実に空まわりを防止することがで
きる。
Furthermore, according to the present invention, a protrusion is formed on the inner surface of the bottom of the inner hook, and the flange of the bobbin on which a coating layer made of fluorocarbon resin is formed comes into contact with this protrusion. This also allows braking force to be applied to the bobbin when the sewing operation is stopped, thereby making it possible to more reliably prevent the bobbin from spinning idly.

実施例 第1図は、本発明の一実施例の垂直全回転かま1を示す
断面図である。かまであるたとえば垂直全回転かま1は
、水平な回転軸線まわりに回転駆動される下軸2に取付
部材3を介して外かま4が固定され、外がま4には内か
ま5が収納される。
Embodiment FIG. 1 is a sectional view showing a vertical full-rotation hook 1 according to an embodiment of the present invention. For example, in a vertical full-rotation hook 1, an outer hook 4 is fixed via a mounting member 3 to a lower shaft 2 that is rotationally driven around a horizontal rotation axis, and an inner hook 5 is housed in the outer hook 4. Ru.

この内がま5は、ミシンの機体に固定された内がま回り
止め部材によって外かま4に伴う回転が阻止されている
。このような内かま5にはボビンケース6が着脱可能に
装着され、ボビンケース6内には下糸7が巻回されたボ
ビン8が収納される。
The inner hook 5 is prevented from rotating along with the outer hook 4 by an inner hook rotation preventing member fixed to the body of the sewing machine. A bobbin case 6 is removably attached to such an inner hook 5, and a bobbin 8 around which a bobbin thread 7 is wound is housed within the bobbin case 6.

前記内がま5の外周面には周方向に軌条9が形成され、
この軌条9は外かま4の内周面に形成された軌溝10に
嵌まり込み、外がま4が内かまのまわりを回転駆動する
ように構成されている。内かま5は、前記軌条9が形成
されている大略的に直円筒状の筒部11と、この筒部1
1の直線方向−万態端部に垂直に連なる底部12とを有
し、底部12には内がま5の開口端側に向けてスタッド
13が立設されている。縫製動作が開始されると、針1
4が上下に往復動して、その針14の針穴に挿通されて
いる上糸が剣先15によって捕らえられ、上糸ループを
形成し、前記ボビン8に巻回されている下糸7に係合し
て縫い目が形成される。
A rail 9 is formed in the circumferential direction on the outer peripheral surface of the inner pot 5,
This rail 9 is fitted into a track groove 10 formed on the inner circumferential surface of the outer hook 4, so that the outer hook 4 is driven to rotate around the inner hook. The inner hook 5 includes a generally right cylindrical cylindrical portion 11 in which the rail 9 is formed, and this cylindrical portion 1.
The inner pot 5 has a bottom portion 12 that extends perpendicularly to the linear direction of the inner pot 1 and the universal end thereof, and a stud 13 is erected on the bottom portion 12 toward the open end side of the inner pot 5. When the sewing operation starts, needle 1
4 reciprocates up and down, the upper thread inserted into the needle hole of the needle 14 is caught by the tip 15, forms an upper thread loop, and is engaged with the lower thread 7 wound around the bobbin 8. A seam is formed.

前記内かまの底部12には、内面16から開口端側に向
けて突出する突起17が周方向に形成される。この突起
17は9、本実施例では、底部12の周方向外方寄りに
、すなわち前記筒部11と底部12の交差位置付近に形
成される。このような突起17の開口端側の表面にはフ
ッ化樹脂から成る被覆層18が形成される。この被覆層
18は、以下の一般式で示されるポリテトラフルオロエ
チレン(商品名ではテフロンと呼ばれる)が用いられる
A protrusion 17 that protrudes from the inner surface 16 toward the open end is formed in the circumferential direction on the bottom 12 of the inner hook. In this embodiment, the protrusion 17 is formed outward in the circumferential direction of the bottom portion 12, that is, near the intersection of the cylindrical portion 11 and the bottom portion 12. A coating layer 18 made of fluororesin is formed on the surface of the protrusion 17 on the open end side. This coating layer 18 is made of polytetrafluoroethylene (referred to as Teflon as a trade name) represented by the following general formula.

→CF2−CF2→−・・・(1) ただし、nは正の整数 このポリテトラフルオロエチレンは、白色ろう状の熱可
塑性樹脂であって、市販されている成形用ポリマーは分
子量がたとえば400万〜1000万と大きく、高い溶
融粘度を示す。また−100℃から200℃までの広範
囲の温度下で使用することができ、溶融アルカリ金属な
らびに高温化フッ素ガス以外のすべての、酸、アルカリ
、溶剤に耐える性質を有している。このようなポリテト
ラフルオロエチレンを用いて、たとえば環状に形成し、
接着剤などを用いて前記突起17に貼着される。また環
状に形成された前記被覆層18に予め接着剤を塗布して
おき、内かま5に接着するようにしてもよい。
→CF2-CF2→- (1) where n is a positive integer This polytetrafluoroethylene is a white waxy thermoplastic resin, and commercially available molding polymers have a molecular weight of, for example, 4 million. ~10 million, showing a high melt viscosity. Furthermore, it can be used under a wide range of temperatures from -100°C to 200°C, and has the property of being resistant to all acids, alkalis, and solvents other than molten alkali metals and high-temperature fluorine gas. Using such polytetrafluoroethylene, for example, it is formed into a ring shape,
It is attached to the protrusion 17 using an adhesive or the like. Alternatively, the annularly formed coating layer 18 may be coated with an adhesive in advance and bonded to the inner hook 5.

このように構成された内がま5内には、前記ボビン8が
収納される。このボビン8はスタッド13が挿通される
直円筒状の巻胴部21と、巻胴部21の軸線方向両端部
に溶接などによって固定される一対のフランジ22.2
3とを有する。これらのフランジ22.23のうち内か
ま5の底部12側に配置された一方のフランジ22は、
周縁部近傍が前記被覆層18に接触している。したがっ
て前記突起および被覆層18の半径線方向の幅B1は筒
部11の内周面24から半径方向内方に少なくとも前記
フランジ22(または23)に接触することができる程
度の長さを有しており、この幅B1は縫製速度、すなわ
ち外かま4の回転速度に応じて任意に設定することがで
きる。
The bobbin 8 is housed in the inner pot 5 configured in this way. This bobbin 8 includes a right cylindrical winding trunk 21 through which the stud 13 is inserted, and a pair of flanges 22.2 fixed to both ends of the winding trunk 21 in the axial direction by welding or the like.
3. Among these flanges 22 and 23, one flange 22 disposed on the bottom 12 side of the inner hook 5 is
The vicinity of the peripheral edge is in contact with the coating layer 18 . Therefore, the width B1 in the radial direction of the protrusion and the coating layer 18 is long enough to contact at least the flange 22 (or 23) radially inward from the inner circumferential surface 24 of the cylindrical portion 11. This width B1 can be arbitrarily set depending on the sewing speed, that is, the rotational speed of the outer hook 4.

このようにしてボビンのフランジ22と前記被覆層18
とが接触しているので、縫製時に下糸7が引出されるこ
とによってボビン8が回転している途中で縫製動作が停
止されても、迅速にボビン5の回転を停止させることが
できる。しかもボビン8が回転している状態では、いわ
ゆる動摩擦係数が小さいので、回転しているボビン8に
不所望に大きな摩擦力が作用するおそれはなく、したが
って引出された下糸に大きな張力が発生するおそれがな
い。
In this way, the flange 22 of the bobbin and the coating layer 18 are
Since they are in contact with each other, even if the sewing operation is stopped while the bobbin 8 is rotating due to the bobbin thread 7 being pulled out during sewing, the rotation of the bobbin 5 can be stopped quickly. Moreover, when the bobbin 8 is rotating, the so-called dynamic friction coefficient is small, so there is no risk of an undesirably large frictional force acting on the rotating bobbin 8, and therefore a large tension is generated in the drawn bobbin thread. There is no fear.

本実施例に類似する本発明の他の実施例として、前記被
覆層18は周方向全周にわたって形成するようにしても
よく、あるいは周方向に間隔をあけて断続的に設けるよ
うにしてもよい。
As another embodiment of the present invention similar to this embodiment, the coating layer 18 may be formed all around the circumference, or may be provided intermittently at intervals in the circumferential direction. .

第2図は、本発明の他の実施例の断面図である。FIG. 2 is a cross-sectional view of another embodiment of the invention.

なお、前述の実施例と対応する部分には同一の参照符を
付す。前述の実施例では、突起17を筒部11に近接し
て設けるようにしたけれども、本実施例では底部12の
半径方向内方寄りに突起17aが形成され、この突起1
7aの開口端側の表面に被覆層18が形成される。した
がって被覆層18はボビン8の一方のフランジ22の半
径方向内方寄りの外表面に接触し、これによってもまた
前述した実施例と同様な効果を得ることができる。
Note that the same reference numerals are given to parts corresponding to those in the above-described embodiment. In the above-described embodiment, the protrusion 17 was provided close to the cylindrical portion 11, but in this embodiment, the protrusion 17a is formed on the radially inward side of the bottom portion 12, and this protrusion 1
A covering layer 18 is formed on the surface of the opening end of 7a. Therefore, the covering layer 18 comes into contact with the radially inward outer surface of one flange 22 of the bobbin 8, and this also makes it possible to obtain the same effect as in the embodiment described above.

第3図は、本発明のさらに他の実施例を示す断面図であ
る。なお前述の実施例と対応する部分には同一の参照符
を付す。本実施例において、注目すべきは、内がま5b
には第1図に示される実施例と同様な位置に突起17b
だけが形成されており、ボビン8の一方のフランジ22
には前記突起17bに接触することができる位置に環状
の被覆層18bが接着されている。このような被覆層1
8bが接着されたボビン8は、既存のボビンに被覆層1
8bを接着するだけでよいので生産性が良好であり、予
め複数の被覆層18bが形成されたボビン8を準備して
おくことによって縫製作業が終了したときに下糸が消費
されたボビン5に再び下糸を巻回する必要がなく、予め
下糸が巻回されているボビンを下糸が消費されたボビン
と迅速に交換することができる。
FIG. 3 is a sectional view showing still another embodiment of the present invention. Note that the same reference numerals are given to parts corresponding to those in the above-described embodiment. In this embodiment, what should be noted is the inner pot 5b.
The projection 17b is located at the same position as the embodiment shown in FIG.
Only one flange 22 of the bobbin 8 is formed.
An annular covering layer 18b is adhered to a position where it can come into contact with the protrusion 17b. Such a coating layer 1
The bobbin 8 to which the bobbin 8b is attached is coated with the coating layer 1 on the existing bobbin.
8b, productivity is good, and by preparing the bobbin 8 on which a plurality of covering layers 18b are formed in advance, when the sewing work is finished, the bobbin 5 can be replaced with the used bobbin thread. There is no need to wind the bobbin thread again, and a bobbin on which the bobbin thread has been wound in advance can be quickly replaced with a bobbin in which the bobbin thread has been consumed.

本発明の他の実施例として、ボビン8の両フランジ22
.23の外表面に被覆層を全面にわたって形成するよう
にしてもよく、この場合には流動状のフッ化樹脂内にボ
ビン8を浸漬して容易に形成することができる。
As another embodiment of the present invention, both flanges 22 of the bobbin 8
.. A coating layer may be formed on the entire outer surface of the bobbin 23, and in this case, the coating layer can be easily formed by dipping the bobbin 8 into a fluid fluorinated resin.

本発明のさらに他の実施例として、前記被覆層18.1
8a、18bは、焼付け、スパッタリング、その他の方
法によって形成するようにしてもよい。
As yet another embodiment of the invention, the coating layer 18.1
8a and 18b may be formed by baking, sputtering, or other methods.

発明の効果 本発明によれば、内かまの底に形成された突起にフッ化
樹脂から成る被覆層が形成されるので、0 その内がま内に収納されたボビンのフランジが前記被覆
層に接触して、縫製動作を停止したときにそのボビン8
に制動力を作用させて空まわりを防止することができる
Effects of the Invention According to the present invention, a coating layer made of fluorocarbon resin is formed on the protrusion formed on the bottom of the inner hook, so that the flange of the bobbin housed in the inner hook does not touch the coating layer. When the bobbin 8 comes into contact and the sewing operation is stopped,
It is possible to prevent the vehicle from spinning by applying braking force to the vehicle.

また本発明によれは、ボヒンのフランジの外表面にフッ
化樹脂から成る被覆層を形成するようにしたので、その
ボビンを内がま内に収納した状態において、被覆層とそ
の内かまの内面とが接触することになり、縫製動作を停
止したときにおけるボビンの空転を防止することができ
る。
Further, according to the present invention, since the coating layer made of fluoride resin is formed on the outer surface of the flange of the bobbin, when the bobbin is stored in the inner hook, the coating layer and the inner surface of the inner hook are removed. This makes it possible to prevent the bobbin from spinning idly when the sewing operation is stopped.

さらに本発明によれば、内かまの底の内面に突起を形成
し、ボビンのフランジ外表面に被覆層を形成するように
したのて、その内がまにボビンを収納した状態において
、前記突起と被覆層とが接触することになり、これによ
ってもまた縫製動作を停止したときにボビンに制動力を
作用させて空転を防止することができる。
Furthermore, according to the present invention, a protrusion is formed on the inner surface of the bottom of the inner hook, and a coating layer is formed on the outer surface of the flange of the bobbin, so that when the bobbin is stored in the inner hook, the protrusion is formed on the inner surface of the bottom of the inner hook. This brings the bobbin into contact with the covering layer, and this also makes it possible to apply a braking force to the bobbin and prevent it from idling when the sewing operation is stopped.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例の断面図、第2図は本発明の
他の実施例の断面図、第3図は本発明のさらに他の実施
例の断面図である。
FIG. 1 is a sectional view of one embodiment of the invention, FIG. 2 is a sectional view of another embodiment of the invention, and FIG. 3 is a sectional view of still another embodiment of the invention.

Claims (3)

【特許請求の範囲】[Claims] (1)内かまの底の内面に、その内面から開口端側に向
けて突出する突起を設け、 この突起の表面に、フッ化樹脂から成る被覆層を形成し
たことを特徴とするミシンのかま。
(1) A sewing machine hook characterized in that a protrusion is provided on the inner surface of the bottom of the inner hook that protrudes from the inner surface toward the open end, and a coating layer made of fluoride resin is formed on the surface of the protrusion. .
(2)ボビンのフランジの外表面に、フッ化樹脂から成
る被覆層を形成したことを特徴とするミシンのかま。
(2) A sewing machine hook characterized in that a coating layer made of fluororesin is formed on the outer surface of the flange of the bobbin.
(3)内かまの底の内面に、その内面から開口端側に向
けて突出する突起を設け、 この内かまに収納されるボビンのフランジ外表面に、前
記突起に対向する環状のフッ化樹脂から成る被覆層を形
成したことを特徴とするミシンのかま。
(3) A protrusion is provided on the inner surface of the bottom of the inner hook that protrudes from the inner surface toward the open end, and an annular fluorinated resin is provided on the outer surface of the flange of the bobbin to be stored in the inner hook, facing the protrusion. A sewing machine hook characterized by forming a covering layer consisting of.
JP2007996A 1990-01-16 1990-01-16 Sewing machine bite Expired - Fee Related JPH0693950B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007996A JPH0693950B2 (en) 1990-01-16 1990-01-16 Sewing machine bite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007996A JPH0693950B2 (en) 1990-01-16 1990-01-16 Sewing machine bite

Publications (2)

Publication Number Publication Date
JPH03212288A true JPH03212288A (en) 1991-09-17
JPH0693950B2 JPH0693950B2 (en) 1994-11-24

Family

ID=11681010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007996A Expired - Fee Related JPH0693950B2 (en) 1990-01-16 1990-01-16 Sewing machine bite

Country Status (1)

Country Link
JP (1) JPH0693950B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212289A (en) * 1990-01-16 1991-09-17 Hirose Mfg Co Ltd Bobbin and bobbin cylinder for sewing machine using bobbin

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212289A (en) * 1990-01-16 1991-09-17 Hirose Mfg Co Ltd Bobbin and bobbin cylinder for sewing machine using bobbin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212289A (en) * 1990-01-16 1991-09-17 Hirose Mfg Co Ltd Bobbin and bobbin cylinder for sewing machine using bobbin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212289A (en) * 1990-01-16 1991-09-17 Hirose Mfg Co Ltd Bobbin and bobbin cylinder for sewing machine using bobbin

Also Published As

Publication number Publication date
JPH0693950B2 (en) 1994-11-24

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