Sewing – Special machines – Darning
Patent
1985-10-25
1987-09-15
Nerbun, Peter
Sewing
Special machines
Darning
112454, 112457, 112317, D05B 1900
Patent
active
046931929
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a control device for a sewing machine and more particularly to a control device for a sewing machine capable of programming various sewing patterns as required by an operator.
BACKGROUND OF THE INVENTION
In a conventional control device for an industrial sewing machine, a limited repertory of sewing patterns such as those shown in FIGS. 1(a)-1(e) are stored in a memory. In the drawings, the capital letters A-J represent respective sewing sections (unit sewing patterns) which comprise sewing patterns. For example, the pattern 1 begins with start bar tacking (SBT) which is itself composed of a forward feed section A and a reverse feed section B, and terminates in end bar tacking (EBT) which it itself composed of a reverse feed section C and a forward feed section D, with the interposition of a free sewing section therebetween. In drawings, symbols ".DELTA." represent the points where treadling back is conducted by the operator and "x" the point of automatic thread cutting and the following up-lock of the needle arm. The symbols "O" represent the point of automatic down-lock of the needle arm at the end of the preset number of stitches. In actual practice, the operator first selects one of the stored sewing patterns 1-5 by pressing a proper pattern selection key switch 7 located in a control panel 6, as shown in FIG. 2. Then, the desired number of stitches corresponding to the respective sewing sections of the selected sewing pattern is set by means of a digital switch 8 which is only for selecting the number of stitches located in the control panel. The key switches A-D can set from 0 to 9 stitches, while the rest of the switches E-J can set from 0-99 stitches.
In such a prior art control device for sewing machines, however, since only one sewing pattern and the number of stitches can be pre-programmed at one time, when the job requires a combination of different sewing patterns, say, the alternate combination of the patterns 3 and 4, it it necessary to employ alternate use of different sewing machines having different programs or, alternatively, the resetting of the sewing pattern and the number of stitches by means of the pattern selection key switch 7 and the switch 8 for selecting the number of stitches each time the pattern is changed. In either case, this program changing operation is cumbersome for the operator and is apt to lead to input error, which results in a considerable reduction in operating efficiency. Further, since the number of sewing patterns capable of being programmed is limited, these prior art control devices for sewing machines have not been able to properly meet the demands for a diverse sewing design.
SUMMARY OF THE INVENTION
The present invention has been proposed to solve the above-mentioned conventional problem. It is therefore a main object of the invention to provide a control device for a sewing machine of a type in which it is possible for arbitrarily composed sewing patterns to be programmed and for desired sewing patterns to be selected as required by the operator.
To achieve the above object the invention relates to a control device for a sewing machine and comprises input means capable of individually inputting program data including a first category of program relative information consisting of respective commands for at least formation, execution, combination and termination of a program, a second category of unit sewing pattern relative information consisting of respective commands for lock of needle arm, fabric feed, and thread cut, and a third category of numerical information consisting respectively of a program management number and a number of stitches in relation to a sewing pattern forming program for forming a sewing pattern integrally composed of unit sewing patterns; discriminator means for discriminating between commands for program formation and commands for program execution from said input means; memory means for storing input data entered after said command for program formation into the respective
REFERENCES:
patent: 3750603 (1973-08-01), Martin
patent: 4133275 (1979-01-01), Herzer et al.
patent: 4195582 (1980-04-01), Novick et al.
patent: 4469038 (1984-09-01), Fujikawa
patent: 4499836 (1985-02-01), Meier et al.
patent: 4526114 (1985-07-01), Martell et al.
patent: 4555997 (1985-12-01), Tancs
Nerbun Peter
Tokyo Juki Industrial Co. Ltd.
LandOfFree
Control device for sewing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control device for sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for sewing machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1378126