CA1171943A - Sewing guide of a seam pattern sewing machine - Google Patents

Sewing guide of a seam pattern sewing machine

Info

Publication number
CA1171943A
CA1171943A CA000390746A CA390746A CA1171943A CA 1171943 A CA1171943 A CA 1171943A CA 000390746 A CA000390746 A CA 000390746A CA 390746 A CA390746 A CA 390746A CA 1171943 A CA1171943 A CA 1171943A
Authority
CA
Canada
Prior art keywords
seam
sewing
schedule
seam pattern
guide according
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.)
Expired
Application number
CA000390746A
Other languages
French (fr)
Inventor
Bengt A. Bergvall
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.)
VSM Group AB
Original Assignee
Husqvarna AB
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 Husqvarna AB filed Critical Husqvarna AB
Priority to CA000390746A priority Critical patent/CA1171943A/en
Application granted granted Critical
Publication of CA1171943A publication Critical patent/CA1171943A/en
Expired legal-status Critical Current

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Abstract

ABSTRACT OF THE DISCLOSURE
A sewing guide for a zigzag sewing machine is provided with at least two seam pattern selectors, a first one including a schedule of text, symbols or the like provided with an indicator connected to and controlled by an adjustable control of the second seam pattern selector.
The indicator is associated with adjustable controls by which the respective seam operation is selected and as a start address supplied to an electronic unit for supplying stitch data in the machine.

Description

11~719~3 The present invention relates to an arrangement for making a seam choice, especially related to a built-in sewing guide in an electronic sewing machine with an electronic seam memory for the supply of stitch data to the needle positioning and cloth feeding mechanisms.
Electronic fancy seam data systems for sewing machines have, in general, among other things an input selector, e.g. a set of push button switches with a row of symbols showing the seam the machine wiil sew, when a push button referred to a certain symbol is actuated. The choice of one of the several symbols and eventually other controls m~st, however, be made by the operator which can be a difficult problem with regard to the cloth quality and the appropciateness of the several seams. Most sewing machines have a manual which provides advice on the adjustment of the machine. For an extensive programme of fancy seams such a manual will be big and inconvenient and may ca~se confusion to the one which operates the several controls.
The present invention seeks to provide a sewing machine of which the operation is simplified. According to one aspect of the present invention there is provided a sewing guide for a zigzag sewing machine provided with at least two seam pattern selectors, a first one including a schedule of text, symbols or the like provided with indicating means connected to and controlled by an adjustable control of the second sëam pattern selector, wherein said indicating means is associated with adjustable controls by which the respective seam operation is selected and as a start address supplied to an electronic ~nit for supplying stitch data in the machine.
Preferably a schedule of the second sea~ pattern selectoc is related to thew texture and/or thickness of the stuff to be sewn.

1 17 ~ ~ 3 However, the art here referred to permits a pluralicy oi different seam patterns for one and the same function (or operation~. Modern sewing machines have, for instance for the operation "Sew together" at least three differenc seams i.e. straight seam, zigza~ seam and reLn-forced straight seam. The plurality of alternative seams for every operation could make the sewi.n~ complicated, if there was not an effective instruction accessible at or on the machine. The present invention i.s reLated eo a system for making che information on the several alternatives for every operation accessible which is introduced and stored in the memory of the machine. The seams whi.ch are less suitable in a certain comblnation of texture and operatlon are not shown on thls lnformation. At the symbols for the shown suitable seams there are switch means on which someone o these seams can be selected. t~hen such a seam is s~lected, the input selector supplies a start address to the counter, and feeding of ideal data ft)r cloth and opera-tion in question is effected from the sti.tc~ memory. The advantage of such a system is Eound in the face that the operator directly after the adjustment of the cloth control ob~ains information for the next ad~ustment referred to the operation. This advantage can be realized, when the system is carried out in accordance with this invention.

` An embodiment of a sewing guide Dccording to the invention is described in the following with the assistance of the attached drawlngs in whlch:

~ 2-'~

1~71~}43 FIG. 1 shows a control panel on the front surface of a sewing machine.
FIG. 2 shows the same panel but a certain adjust-ment of a rotary control thereon.
FIG. 3 shows a wiring diagram of the indicating means in the panel, and FIG. 4 shows a wiring diagram of the input selector in the panel.
On a sewing machine provided with a post 10 and an over-arm 11 there is mounted a control panel 12 with indica~ing means 13, buttons 14 and a rotary control 15, which are used for informing the electronic system 16 of the machine of a certain seam selection. The rotary control is used for making a preadjustment on a series of seam patterns,e.g. utility seams, of which at least one can be selected on the buttons 14. Such a rotary control is suit-ably constituted of a binary converter with for instance four output lines 17 on which an output four bit code represents a certain adjustment on the rotary control. The several positions are marked by text on the panel stating, in the shown embodiment, the texture of the stuff to be sewn.
The rotary control can, for instance, be designed as shown in FIG. 3 which also shows the connection of a number of lamps 18 (light emitting diodes) to a memory uni.t 19 constituted of four partial memories which are generally denoted 74S 278 in so called TTL-technics. The wires 17 are branched to every one of the partial memories which have 8 outputs 20-23 each. The memory unit is programmed for supplying current on a special combination of wires in the groups 20-23 corresponding to the input code on the wires ~71943 17. First said wires supply current to light the correspond-ing lamps, and these ones thereby inform the operator about the seam patterns which for the priorly made preadjustment of the control 15 and a couple of rows of illuminated text 24 are shown indicating the several operations that may be effected on the stuff pointed out by the control 15. The text in every square 25 made of transparent material, is illuminated from behind by the corresponding lamp. When light is out the text is vanished. Below the text squares another row of squares 26 is positioned showing a symbol of the seam described by the text in the square above.
Besides a description of the operation the text may include practical hints on extra measures for the accomplishment of the seam, for instance, changing the presser foot and the like. After any adjustment of the buttons 14 the zigzag width and the stitch length can be adjusted individually on a couple of controls 27, 28.
The information by the illuminated text squares is used for the completion of a seam selection, which is made so that the operator pushes a button 14, whereby a so called seam selection code (or start address) is created and conducted to a start address memory in the electronic unit. This unit is composed of many parts in the form of circuit cards and components, which are not here separately stated or described, as a plurality of embodiments are priorly known and the invention does not refer to a special embodiment of the electronic unit for controlling the needle and feeder. However, an example of such a unit is described in the Swedish patent specification No. 7910201-8, which may be referred to for the sake of completeness.

~7i~43 The embodiment now described is an example how to realize the invention. As a variation of the "cloth control" it may be mentioned that the handle 15 may be replaced by buttons or a slide control. Even if the applica-tion of the invention in an electronic sewing machine is described in the foregoing, the invention is not restricted to such application but can advantageously also be applied to sewing machines with mechanical zigzag stitch control, for instance cam discs.

Claims (7)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A sewing guide for a zigzag sewing machine provided with at least two seam pattern selectors, a first one including a schedule of text, symbols or the like provided with indicating means connected to and controlled by an adjustable control of the second seam pattern selector, wherein said indicating means is associated with adjustable controls by which the respective seam operation is selected and as a start address supplied to an electronic unit for supplying stitch data in the machine.
2. A sewing guide according to claim 1, wherein a schedule of the second seam pattern selector is related to the texture and/or thickness of the stuff to be sewn.
3. A sewing guide according to claim 1, wherein the schedule provided with said indicating means is related to seam operations.
4. A sewing guide according to claim 3, wherein an information for the selection of presser foot is included in said schedule.
5. A sewing guide according to claim 3 or 4, wherein the indicating means includes lamps enlightening the text or symbols in the schedule.
6. A sewing guide according to claim 2, wherein said seam pattern selector has connections via a data memory to the indicating means and among these ones selects seam operations suitable for the texture and/or thickness of the stuff pointed out by said second seam pattern selector.
7. A sewing guide according to claim 1, wherein the schedule includes at least one indicator which is controlled by a combination of adjustments on both seam pattern selectors.
CA000390746A 1981-11-24 1981-11-24 Sewing guide of a seam pattern sewing machine Expired CA1171943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000390746A CA1171943A (en) 1981-11-24 1981-11-24 Sewing guide of a seam pattern sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000390746A CA1171943A (en) 1981-11-24 1981-11-24 Sewing guide of a seam pattern sewing machine

Publications (1)

Publication Number Publication Date
CA1171943A true CA1171943A (en) 1984-07-31

Family

ID=4121482

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000390746A Expired CA1171943A (en) 1981-11-24 1981-11-24 Sewing guide of a seam pattern sewing machine

Country Status (1)

Country Link
CA (1) CA1171943A (en)

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