US 2003/0209178 A1 · Threading apparatus for sewing machine

Abstract

A threading apparatus for a sewing machine includes a threading member for passing a thread through a needle eye, an operating member for executing a threading operation by the threading member, and a moving mechanism for moving the threading member between a first position where the threading member is close to the needle eye and a second position where the threading member is away from the needle eye. The moving mechanism includes a supporting member provided to be movable for supporting the threading member, a moving actuating member moved between a non-operative position and an operative position according to an operation of the operating member, and a moving string-shaped member including a middle portion hooked on the moving actuating member and having one of both ends fixed to a stationary portion and the other end mounted on the supporting member. The moving actuating member is moved from the non-operative position to the operative position so that the moving string-shaped member is moved in such a direction as to draw the supporting member.

Claims9

Dependent claims

A threading apparatus for a sewing machine, which includes a threading member for passing a thread through a needle eye and an operating member for executing a threading operation by the threading member, the threading apparatus comprising:

a moving mechanism for moving the threading member between a first position where the threading member is close to the needle eye and a second position where the threading member is away from the needle eye, the moving mechanism including a supporting member provided to be movable for supporting the threading member, a moving actuating member moved between a non-operative position and an operative position according to an operation of the operating member, and a moving string-shaped member including a middle portion hooked on the moving actuating member and having one of both ends fixed to a stationary portion and the other end mounted on the supporting member, the moving actuating member being moved from the non-operative position to the operative position so that the moving string-shaped member is moved in such a direction as to draw the supporting member.

A threading apparatus for a sewing machine, which includes a threading hook passed through the needle eye and a thread holding member provided for holding the thread and moved between a first position where the thread holding member is close to a needle eye and a second position where the thread holding member is away from the needle eye, the threading apparatus comprising:

a supporting member moved upward and downward and supporting the thread holding member;
a movable supporting member supporting the supporting member so that the supporting member is moved upward and downward, the movable supporting member being moved upward and downward;
an upper pulley and a lower pulley both provided on the movable supporting member so as to be spaced vertically from each other;
a stationary supporting member supporting the movable supporting member so that the movable supporting member is moved;
an upper fixing portion and a lower fixing portion both provided on the stationary supporting member so as to be away from each other;
a first string-shaped member having one of both ends fixed to the upper fixing portion and the other end fixed to the lower fixing portion, the first string-shaped member having a middle portion located near said one end thereof and hooked on the lower pulley and another middle portion located near said other end thereof and hooked on the upper pulley;
a second string-shaped member having one of both ends fixed to a stationary portion and the other end mounted on the movable supporting member;
an operating pulley engaging a middle portion of the second string-shaped member and moved downward to press said other end of the second string-shaped member downward, thereby moving the movable supporting member downward;
and
a returning member returning the supporting member, the movable supporting member, the first and second string-shaped members, the upper and lower pulleys and the operating pulley to respective original positions when the operating pulley is released from a force moving the operating pulley downward.

7 more elements

Dependencies are inferred from the claim text.

Threading apparatus for sewing machine

Life of this patent

Threading apparatus for sewing machine

Life of this patent

Abstract

Claims9