Apparatus and method for detecting an ending-point of bobbin thread for sewing machine using bar code
OwnerHoon Sik Choinventor
Life of this patent
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Abstract
The present invention relates to an apparatus and a method for detecting the ending-point of a bobbin thread for a sewing machine using a bar code, which is capable of alerting a sewing operator of his/her desiring bobbin thread remains when they are left enough to finish sewing under operation. The present invention of the apparatus for detecting the ending-point of a bobbin thread for a sewing machine using a bar code so as to sense the ending-point of a bobbin thread during a sewing operation, comprises a bobbin to wind a bobbin thread therearound and at least one bar code to indicate a position in the surface of a bobbin, of which the bar code is printed on one or both side(s).
Claims7
An apparatus for detecting the ending-point of a bobbin thread for a sewing machine using a bar code so as to sense the ending-point of a bobbin thread during a sewing operation, the apparatus comprising:
- a bobbin to wind a bobbin thread therearound;
- and
- at least one bar code to indicate a position in the surface of a bobbin, of which the bar code is printed on one or both side(s).
A method for detecting the ending-point of a bobbin thread for a sewing machine using a bar code so as to sense the ending-point of a bobbin thread during a sewing operation, the method comprising the steps of:
- sensing by reading the bar code value of exposed part of the surface of a bobbin undone with a bobbin thread;
- converting the said bar code value into a digital value;
- comparing the said digital value with a preset dial value which indicates the position in the surface of a bobbin;
- and
- expressing the corresponding of the said digital value to the said dial value.
A method for detecting the ending-point of a bobbin thread for a sewing machine using a bar code so as to sense the ending-point of a bobbin thread during a sewing operation, the method comprising the steps of:
- securing of a signal of cutting of a bobbin thread by a trimming device;
- and
- stopping a sewing machine responding to the said cutting signal or expressing the ending of the said bobbin thread by at least one way of a speaker, an LED or an LCD.
Dependencies are inferred from the claim text.