Arranged in the middle of an upper communication sleeve is a first shutter that is moved back and forth in a horizontal open-close direction to open and close a first communication path that makes the inside of a first bobbin chamber and the inside of a furnace body communicate with each other. Arranged in a middle of a lower communication sleeve is a second shutter that is moved back and forth in a horizontal open-close direction to open and close a second communication path that makes a second bobbin chamber and the inside of the furnace body communicate with each other.

A wire supply module may include a plurality of spools and a joint machine. Wires may be wound on the spools. The joint machine may be arranged between the spools to join the wires to each other. The joint machine may include a housing, a jointer and a cutter. The housing may have a joint passage configured to receive ends of the wires. The jointer may be arranged in the housing to join the ends of the wires to each other. The cutter may be arranged in the housing to partially cut the joined ends of the wires. Thus, when all the wire on a currently used spool may be exhausted, the wire on another spool may be joined to the wire on the currently used spool so that the wire may be continuously supplied without a spool exchange.

A wire supply module may include a plurality of spools and a joint machine. Wires may be wound on the spools. The joint machine may be arranged between the spools to join the wires to each other. The joint machine may include a housing, a jointer and a cutter. The housing may have a joint passage configured to receive ends of the wires. The jointer may be arranged in the housing to join the ends of the wires to each other. The cutter may be arranged in the housing to partially cut the joined ends of the wires. Thus, when all the wire on a currently used spool may be exhausted, the wire on another spool may be joined to the wire on the currently used spool so that the wire may be continuously supplied without a spool exchange.

A fishing line tying tool designed to hold an eyelet bearing apparatus in its plier jaws and constrain two sections of fishing line, such that when the sections of line are brought together above the tool, can be quickly wound by rotation of a centralized post located at the bottom of the tool. There are a pair of opposing winder posts formed on the handle of the pliers that have two different sets of hooks for the retention of the fishing line thereon.

A fishing line tying tool designed to hold an eyelet bearing apparatus in its plier jaws and constrain two sections of fishing line, such that when the sections of line are brought together above the tool, can be quickly wound by rotation of a centralized post located at the bottom of the tool. There are a pair of opposing winder posts formed on the handle of the pliers that have two different sets of hooks for the retention of the fishing line thereon.

A device for making knotted string accessories from a plurality of individual strings has a base having a substantially planar surface and a central longitudinal axis, a plurality of string holders connected to and extending away from the substantially planar surface of the base, the plurality of string holders symmetric with respect to the central longitudinal axis and configured to retain one of plurality of individual strings between adjacent string holders and a securing member carried by the base and positioned along the central longitudinal axis. The securing member secures at least one string of the plurality of individual strings. An electronic device holder is carried by the base and is configured to hold an electronic device to be viewed by a user making a knotted string accessory.

A device for making knotted string accessories from a plurality of individual strings has a base having a substantially planar surface and a central longitudinal axis, a plurality of string holders connected to and extending away from the substantially planar surface of the base, the plurality of string holders symmetric with respect to the central longitudinal axis and configured to retain one of plurality of individual strings between adjacent string holders and a securing member carried by the base and positioned along the central longitudinal axis. The securing member secures at least one string of the plurality of individual strings. An electronic device holder is carried by the base and is configured to hold an electronic device to be viewed by a user making a knotted string accessory.

Tools and methods are discussed for tying a knot. A knot tying tool can include an elongated housing and an insert member. The housing can have first and second body portions having different outer cross-sections. A first chamber can extend within the housing with a slit that opens into the chamber. The insert member can also have a slit opening into a second chamber. The insert member can have an inner cylinder rotatable and movable within the first chamber. Rotation of the inner cylinder within the first chamber can move the knot tying tool between a locked and an unlocked position, the first and second slits being aligned in the unlocked position to allow a line to pass through the first and second slits into the second chamber.

Tools and methods are discussed for tying a knot. A knot tying tool can include an elongated housing and an insert member. The housing can have first and second body portions having different outer cross-sections. A first chamber can extend within the housing with a slit that opens into the chamber. The insert member can also have a slit opening into a second chamber. The insert member can have an inner cylinder rotatable and movable within the first chamber. Rotation of the inner cylinder within the first chamber can move the knot tying tool between a locked and an unlocked position, the first and second slits being aligned in the unlocked position to allow a line to pass through the first and second slits into the second chamber.

Disclosed is an apparatus or device for making knots in a flexible element that engages a medical device, such as an IUD, and associated methods.