Before the sewing machine can do its job, the owner needs to make a number of technical settings, without which the operation of the device is simply impossible. One of these settings is threading. Although this process is distinguished by its simplicity, some novice housewives do not always know how to thread the upper and lower threads into a sewing machine.
Threading the upper thread begins with installing the spool on a pin specially designed for it on the top of the sewing machine body. After this, the top thread should be pulled through the thread guide and then through the needle. In modern models, there is no need to manually adjust the thread tension in the sewing machine: smart technology itself sets the required tension level for comfortable work.
How to refill old sewing machine? The algorithm for this process is practically no different from what is given above. A slight difference may be observed in the design of the machine model itself. Not all old machines have a tensioner, so the thread is threaded like this: pass it through the thread guide and further into the eye of the needle.
Please note that before threading the needle, the holding foot and the needle itself must be in the up position. To do this, rotate the handwheel so that the needle reaches the desired position.
How to thread the bobbin thread
In order for the machine to perform its functions, it needs a lower thread, which must be wound onto a bobbin and threaded into the corresponding hole in the work table. How to thread the bobbin thread into a sewing machine? The process consists of several successive stages.
Threading the bobbin
Pull to the left and remove the additional table from the machine. Remove the shuttle plate and turn fly ring with the needle in the up position. Pull out the bobbin mechanism by pulling its edge and remove the bobbin itself from the mechanism body.
Winding yarn onto a bobbin can be done by securing the spool of thread to the top pin and connecting it to the thread holder “crosswise”, so that the edge of the thread goes back towards the flywheel. Place the bobbin on the second pin and secure the thread to it by making a few turns around the body. By pressing the pedal or rotating the hand ring, wind the thread onto the bobbin.
Make sure that the thread is threaded into the bobbin case from the inside out.
Installing the bobbin
Insert the bobbin into the bobbin mechanism. Make sure the thread unwinds clockwise, and thread it into a special hole on the mechanism body. Return the bobbin mechanism to the hook and lower the tongue to its original position.
Be sure to lower the tongue of the machine after installing the bobbin mechanism in place. This will allow you to fix it in a stationary position.
Many people mistakenly believe that a sewing machine does not require special attention to care, and that even in poor condition it will be able to perform its main function - sewing. This is far from true. The sewing machine will last you much longer and will sew much faster and quieter if you follow simple rules for caring for it.
- Periodically lubricate internal parts special oil that comes with the device. The frequency of the procedure is once every six months.
- Choose threads and needles wisely. Make sure that the needle matches the type of fabric you are working with.
- Carry out cleaning internal mechanisms using a special brush.
It is worth considering the fact that when working with types of fabrics such as knitwear, fur and wool, the above procedures should be carried out a little more often than usual.
What are sewing machines used for? Serve for sewing fabric parts when sewing various products, performing decorative stitches, as well as for embroidery and darning. Serve for sewing fabric parts when sewing various products, performing decorative stitches, as well as for embroidery and darning. The use of sewing machines allows you to speed up and make work easier, improve the quality of work The use of sewing machines allows you to speed up and make work easier, improve the quality of work Machine seams are smoother, stronger and more beautiful than hand seams Machine seams are smoother, stronger and more beautiful than hand seams
What do you need to know when using a sewing machine? Organization of the workplace Organization of the workplace Safety rules when working with a sewing machine Safety rules when working with a sewing machine Design: sewing machine, bobbin case, machine needle Design: sewing machine, bobbin case, machine needle Winding thread onto a bobbin and installing it in shuttle device Winding the thread onto the bobbin and installing it in the shuttle device Threading the lower thread Threading the lower thread Threading the upper thread Threading the upper thread Replacing the machine needle Replacing the machine needle Cleaning and lubricating the sewing machine Cleaning and lubricating the sewing machine
Find the match: 1. Handwheel 2. Upper thread tension regulator 3. Winder 4. Manual drive 5. Stitch regulator 6. Needle bar 7. Presser foot 8. Sleeve 9. Spool pin 10. Foot lift lever 11. Fabric feed rack 12. Thread take-up 13. Front board 14. Needle plate 15. Platform 16. Shuttle device
Safety rules when working with CMM: Sit on a chair in front of the CMM. straight, at a distance of cm from the edge of the table. Incorrect working posture disrupts posture, causes fatigue and harms the functioning of the digestive system. When working on sh.m. tuck hair under a scarf, fasten the buttons of the sleeves of clothing. Remove foreign objects from the machine. Make sure your hands are in the correct position. Keep needles and pins only in the pincushion. Do not leave scissors open. Pass them by holding the closed blades, handles forward. Cut threads only with scissors. If the needle breaks, find the broken parts and give them to the teacher. Do not use rusty needles.
Upper threading Upper thread is the thread that runs from the spool to the eye of the needle. Before threading the upper thread, you need to raise the presser foot, then rotate the handwheel to set the needle and thread take-up lever to the highest position. To thread the upper thread, proceed as follows: 1. Place the spool of thread on the spool pin and pass the thread through the thread guide slot. 2. Insert the thread between the washers of the upper thread tension regulator, pulling it up at both ends, and then into the loop of the compensation spring. 3. Thread the thread into the eye of the thread take-up lever and pass it through the thread guide hook on the front board and the thread guide hook on the needle clamp. 4. Insert the thread into the eye of the needle from the side of the thread guide, leaving a free end of thread length cm.
The thread boasted among the patches: “I don’t demand wages from you, I do everything for free, Look: everything is patched. To a bag, shirt or underwear. I will sew any of you, and without me you would never be good for anything.” Here, to the side, a needle responded quietly: “You really do sew up holes, But, it’s a pity, you forget, What if I weren’t there, What good would you be?” There are types of people in life: Some are more modest, others are more impudent. The results of their work depend on the contribution of both of them. But a modest worker does not like to boast, He will work conscientiously, And an arrogant, unscrupulous, quitter, grabber will take credit for the merits of others. The thread boasted among the patches: “I don’t demand wages from you, I do everything for free, Look: everything is patched. To a bag, shirt or underwear. I will sew any of you, and without me you would never be good for anything.” Here, to the side, a needle responded quietly: “You really do sew up holes, But, it’s a pity, you forget, What if I weren’t there, What good would you be?” There are types of people in life: Some are more modest, others are more impudent. The results of their work depend on the contribution of both of them. But a modest worker does not like to boast, He will work conscientiously, And an arrogant, unscrupulous, quitter, grabber will take credit for the merits of others.
The first needles were not steel. They were made from fish and other bones. Archaeologists still find them during excavations of settlements dating back to the Stone Age. Using a sharpened stone, our distant ancestor made a small hole in the needle - an eye - and sewed the skins together with threads from the veins. Bone needles were replaced by bronze ones, then iron ones, and in the houses of rich people - silver needles. The first steel needles were brought to Europe in the 14th century by the Arabs. The metal needle came to Russia from Germany in the 17th century. But soon Russian craftsmen revealed the secret of making a needle. In 1677, in only one petty bourgeois settlement in Moscow there were 5 needle makers. In the 18th century, the rapid development of pin production began in Europe. Today needles are made from special steel. The most famous specialized needle factory in the Moscow region. Produces 25 types of sewing needles. From the history of the machine needle
Threading the lower thread ShK is designed to place the bobbin with thread inside the shuttle mechanism and ensure free exit of the lower thread from it. The ShK is a metal cup, on the side surface of which there is an oblique slot for thread, and inside there is a spindle on which the bobbin is put. Refueling ShK. Before you start threading the bobbin, you need to check that the threads on the bobbin are wound evenly and tightly. To thread the bobbin thread: 1. Insert the bobbin with the thread wound into the bobbin case. 2. Thread the thread under the thread tension spring of the bobbin case, leaving a length of cm. 3. Insert the bobbin case into the hook. The pin of the bobbin case should fit into the slot of the hook. If you hear a click, it means that the bobbin cap is installed correctly. 4. Close the slide plate and bring the bobbin thread up through the hole in the needle plate. 5. Bring the ends of both threads back under the foot.
After threading the upper thread, pull up the lower thread from the ShK. To do this, holding the end of the thread from the eye of the needle with your left hand, but without pulling the thread, turn the handwheel towards you so that the needle with thread first falls into the hole of the needle plate, grabs the thread coming out of the needle plate there, and then rises again to its upper position . After this, you need to pull the top thread by the end and pull the bottom thread up through the hole in the needle plate. The ends of both threads are pulled out by 7-8 cm and placed under the presser foot. This completes the preparation of the machine for sewing.
When removing the bobbin, first tilt the latch wing all the way, and then, constantly holding it with the thumb and forefinger of your left hand, remove the bobbin along with the bobbin in it. If the bobbin pops out, do not try to pull it out. It is much easier to reinsert the ShK into place and carefully remove it again along with the bobbin. 23 Questions for review? 1. In what direction does the flywheel and the handle rotate? 2. What is the purpose of a machine needle? 3. What is the function of the thread take-up? 4. What is the purpose of the long groove? 5. What will it mean to thread the bobbin case correctly? 6. What problems with a sewing machine can occur due to a low-quality needle? 7. What is the sliding plate used for? 8. Failure to follow what rules can lead to needle breakage? 9. What moves tissue? 10. What elements does a machine needle consist of? 11. How to correctly install the needle in the needle holder? 12. Which needle shaft is thicker - number 90 or 120? 13. Which thread is thinner - number 40 or 80?
Educational:
- introduce the rules for threading the upper and lower threads, the structure of the bobbin case;
- familiarize yourself with safety rules when working with a sewing machine;
- teach how to thread the upper and lower threads.
Developmental:
- develop in students the ability to organize work in groups (shift pairs), the ability to analyze, and evaluate themselves and others.
- continue to develop finger motor skills
Educational:
- cultivate neatness;
- arouse interest in working with a sewing machine;
- convince of the significance of the acquired knowledge.
Lesson type: combined.
Teaching methods: verbal ( conversation); visual (showing slides, demonstrating work techniques); practical (exercises on performing techniques for threading a sewing machine).
Form of work: frontal, work in pairs of shifts.
Equipment: sewing machine, bobbin case, bobbin, thread, scissors, scrap of fabric.
Didactic tools: Screen, projector, computer with presentation.
During the classes
1. Organizational moment:
A. Checking the payroll and readiness for the lesson.
B. Reporting the topic of the lesson and recording the topic in the students’ notebooks.
2. Updating knowledge:
10-15 minutes teaching method - game situation.
To check the level of knowledge mastery of the lesson topic: “The structure of a sewing machine”, necessary for mastering the topic of this lesson, students (one by one) are invited to work as a teacher and conduct a quick survey on the slide “Type of a sewing machine”. The “teacher” shows the detail, the students quickly name it and receive a token (1 point) for each correct answer. 5 tokens - 5 points.
3. Study of safety rules when working with CMM.
10 minutes.
The teacher explains the importance and necessity of following safety rules when working on a sewing machine. The teacher goes through each rule and asks problematic questions, starting for example: “Why do you think the light should fall from the front or from the left? “If the girls find it difficult to answer, then she comments herself. Students participate in the conversation. To reinforce this question, it is suggested to say the rules out loud in chorus (slide to help).
Safety rules when working on a sewing machine:
Sh.m. is a device that performs mechanical stitching movements of textile materials and leather for the manufacture of clothing, shoes and other garments. The first sewing machine was invented by the German professor Walter in 1755.
The main advantage of a sewing machine is the speed of sewing and the ability to put sewing production on stream. Sh.m. have become the main technological equipment in the manufacture of clothing.
Modern sewing machines can automatically gather fabric, process buttonholes, perform about 47 stitches and 30 types of lines, stitch leather and various types of fabrics from cambric to drape, and embroider. It is possible to install a double needle in them for sewing with two (even multi-colored) threads at once.
- Do you have a sewing machine at home?
- How is it set in motion? (manual drive, foot drive, electric drive).
- Why did man invent the sewing machine?
- Is it easy to work on it?
- What do you think needs to be done to make the machine work?
To sew on a machine, you need to handle it correctly: be careful, know how to lubricate and adjust the machine. It is also necessary to thread your sewing machine correctly. Now we will get acquainted with the procedure for threading the upper and lower threads in a sewing machine, and in practical work you will learn how to thread both the upper and lower threads.
5. Learning new material:
The teacher, using slide pictures, explains the procedure for threading the top and then the bottom threads in a sewing machine. Students listen to the teacher’s explanations and watch slides (auditory and visual learning of new material). After viewing the slides, the teacher suggests repeating the threading algorithm out loud, showing a video without sound. Students (optional) recite these actions out loud.
Upper threading
The top thread is the thread that runs from the spool to the eye of the needle. Before threading the upper thread, you need to raise the presser foot, then rotate the flywheel to set igloo And thread take-up lever as a last resort top position.
Thread the upper thread as follows:
The spool of thread is placed on the spool pin.
The thread from the spool is passed through the upper thread guide to the upper thread tension regulator. You cannot skip the thread guide because the thread must enter the tension regulator at a certain angle.
Then lay the thread between the tension regulator washers, bending around the regulator from below. Bringing the thread up behind the thread guide hook of the fixed washer of the tension regulator, and then into the eye of the compensation spring and into the eye of the thread take-up.
Pass the thread through the two lower thread guides and thread it into the eye of the needle from the side of the long groove.
After refueling top the threads should be pulled up lower thread from ShK (of course, if it is already installed). For this, holding the end of the thread with your left hand from the eye of the needle, but without pulling the thread, turn the flywheel towards you so that the needle and thread first drops into the hole of the needle plate, grabs the thread coming out of the ShK there, and then rises again to its upper position. After this you need to pull the end of the upper thread and through the hole in the needle plate pull the bottom up. The ends of both threads are pulled by 7-8 cm and lay them down under the presser foot. This completes the preparation of the machine for sewing.
The ShK is designed to place the bobbin with thread inside the shuttle mechanism and ensure free exit of the lower thread from it. The ShK is a metal cup, on the side surface of which there is an oblique slot for thread, and inside there is a spindle on which the bobbin is put.
Refueling ShK. Before you start threading the bobbin, you need to check that the threads on the bobbin are wound evenly and tightly.
Procedure for threading the bobbin thread:
- Take the ShK in your left hand and insert a bobbin with thread into it: The bobbin should be held so that the thread hangs in the direction opposite to the direction of the oblique slot and so that the end of the thread is located closer to the inner cheek of the bobbin. This makes threading easier.
- Pull the right hand thread through the slanted slot under the pressure spring and then into the small slot at the end of the spring. Make sure that the pressure spring does not move when pulling the thread.
- Pull the end of the thread and make sure that the thread comes out of the bobbin with little effort, the bobbin rotates freely and does not jam.
Installation and removal of the ShK
Before installing the ShK into the shuttle mechanism, you need to perform several preparatory operations.
- Turning the flywheel by hand, set the needle to the highest position so that it does not interfere with installing the ShK.
- Move the slide plate so that you have clear access to the shuttle mechanism.
- Take your foot off the electric drive rheostat pedal and turn off the machine from the network.
Installation of the ShK into the machine is carried out as follows. Take the tucked ShK by the wing of the latch and bend it all the way. In this position, the latch wing must be constantly held with the index finger and thumb of the left hand so that the bobbin does not fall out of the bobbin. Then put the ShK on the shuttle spindle. In this case, the installation pin must fit into the corresponding cutout of the cover plate of the shuttle mechanism. Then they gradually release the latch wing, while simultaneously pressing the ShK inside until it snaps into place.
When removing the bobbin, first tilt the latch wing all the way, and then, constantly holding it with the thumb and forefinger of your left hand, remove the bobbin along with the bobbin in it. If the bobbin pops out, do not try to pull it out. It is much easier to reinsert the ShK into place and carefully remove it again along with the bobbin.
6. Practical work “Threading the upper and lower threads:
30 – 35 minutes.
Students are asked to thread the upper and lower threads working in pairs of shifts: A student in a pair threads the threads and a neighbor watches her work, then the neighbor threads. The same work on the other desk. Then one of the pair changes with the partner of the other desk, etc. .Evaluation criteria for the work are given: the first time without errors - 5, the second attempt - 4, the third attempt - 3.
After threading, students write down in a notebook the algorithm for threading the upper thread (thread guide, high tension adjuster washers, compensation spring, eye of the thread take-up lever, thread guide No. 2, 3, eye of the needle from the side of the long groove) and the keywords for threading the lower thread (Thumbs up until it clicks)
- The teacher makes targeted rounds, observes, and records the refueling time of the first and lagging behind.
- Cleaning workplaces by students.
7. Summing up the lesson:
Students sum up the lesson, give themselves a grade for practical work, for a quick survey and additional work (5 tokens - 5 points, 4 - 4, 3 tokens you can get an additional question and answer it).
Next, the most typical mistakes are analyzed and homework is written down: Thread the upper and lower threads in the sewing machine at home, mom will mark it in the notebook for the painting, those girls who do not have a sewing machine at home can be threaded in class during the week after school.
A full process of working on a sewing machine, regardless of experience with this device, is impossible without its correct settings, which are done manually. So, in this material we will look at detailed diagrams of how to properly thread a sewing machine.
General instructions for threading a sewing machine
General instructions for threading a sewing machine look like this:
- Wind the thread you will be working with onto the bobbin and at the same stage put the top pin on the spool for the upper thread.
- Next comes the top threading of the sewing machine. There are usually instructions for this process on the body of the device. The upper thread is the one that extends from the spool into the eye of the needle. Before you thread the thread through the eye, you should raise the foot and set the needle so that it takes the position at the very top.
- Check thread tension. Modern devices have special tension regulators.
- After threading the upper thread, you can thread the lower thread. To do this, you need to turn off the drive (moss wheel) and insert the bobbin into place. After this, you need to turn on the wheel and spin it until there is enough thread on the bobbin.
- Insert the bobbin cap into the hook, making sure that the bobbin pin aligns with the slot in the hook. If everything is done correctly, you will hear a characteristic click.
- The thread must be brought out through the valve plate and closed. The upper and lower threads must be connected and pulled back behind the shoulder blade.
To check the correctness of the work done, you should spin the flywheel. After the needle rises and falls, a loop should form from the hole in the plate on the upper thread from the lower thread.
To understand how to thread a bobbin into a standard type sewing machine, we recommend watching a video tutorial that tells not only the sequence of actions, but also where the bobbin is located and what nuances you should pay special attention to:
Correct threading order
This process will vary depending on the type of machine. Modern devices have detailed instructions on how to properly thread a sewing machine, and the devices themselves are designed in such a way that you can intuitively guess how to do everything. But with rotary type machines, difficulties arise, so we will present two instructions in detail:
Top threading
- Pass the thread from the spool through the mount near the device body.
- Pass the thread through the thread tension regulator and insert it into the compensation spring, which looks like a hook.
- Thread the thread through the hole in the thread guide, out through it and into the existing fastener, then into the eye of the needle.
Some machine models have a fork instead of a thread guide. In this case, you just need to put the thread on this fork, and not thread it into the hole.
Threading the bobbin thread
- Wind the lower thread not on the spool, but on the bobbin.
- Insert the bobbin into the bobbin case, with the thread tucked under the spring plate.
- Check thread tension. A certain tension is set for the machine model.
How to thread a double needle?
If the machine performs a zigzag stitch, then a double needle can be installed in it. In this case, the threads will be threaded into the needles in exactly the same way as if it was done with one needle, the only difference is that an additional - second - spool will be required. In this case, both threads must pass through the same upper thread tensioner.
Instructions on how to thread two needles into the machine:
- The double needle is installed according to the same principle as a regular needle. The cut of the needle should be directed away from you, and the round side of the needle bulb itself should be directed towards you.
- The threads from both reels must be passed through all the thread guides, not forgetting about the upper thread tensioner. It should turn out that the lowest thread guides will separate them.
- The left thread must be threaded into the needle on the left, and the right thread, respectively, into the needle on the right. If the device has one thread guide, then the left thread must be passed through the thread guide, and the right thread next to it, tucked under the eye of the needle.
Using a double needle is not difficult, the main thing is to thread both upper threads correctly and also loosen their tension (in the bobbin itself). The lower thread will be used when sewing simultaneously with the upper thread, thereby forming a zigzag, so it is necessary to loosen the tension.
The twin needle makes it easier to perform a double finishing stitch on a machine, as well as to perform decorative finishing stitches with just one stitch of a double needle.
Manual sewing machine: how to thread
When setting up a manual machine, it is important to choose the right needle and thread number for a particular type of fabric, as well as adjust the thread tension, otherwise the quality of the stitch will suffer. Otherwise, threading a manual sewing machine should not cause difficulties, as can be seen from the instructions for threading the Chaika machine:
- Turn the handle so that the mechanism that attracts the threads is at the top.
- Insert the needle into the holder until it stops. The flat side should be facing the rod that the foot is on.
- Use a screw to secure the needle.
- Place the spool of thread on the rod provided for this purpose.
- Pass the thread through the friction washer and thread guide.
- Insert the thread into the thread guide and secure it in the needle holder.
- Thread the thread through the eye of the needle (this will be the top thread).
Threading the bobbin thread:
- Wind the thread onto the bobbin.
- Insert the bobbin into the cap. The thread should be on the outside.
- Insert the cap back until you hear a characteristic click.
- To tighten the thread, you need to turn the handle of the tension machine.
- Tuck both threads (both upper and lower) under the presser foot.
How to properly adjust thread tension:
- Use the screw located on the bobbin case. The tighter the screw is tightened, the tighter the thread.
- Adjust the tension using the regulator located at the lever that lifts the presser foot.
A few useful rules for using the Seagull machine:
- You cannot start stitching without a needle lowered under the presser foot in advance.
- The handle of the machine turns strictly towards itself; you cannot change the direction of rotation.
- To work on this machine, you need to choose fabrics that are suitable for all types of stitches, otherwise you can ruin not only the fabric, but also render your machine completely unusable.
Video: How to thread a Podolsk manual sewing machine?
Another old machine that my grandmothers had at home is a Podolsk brand device. Despite the fact that this model is old and manual, it is pleasant to work with it if you understand all its mechanisms and learn how to refuel, in which the following video will help:
To enjoy your work, and also to avoid problems during work, you should thoroughly study the instructions for threading the sewing machine, because not only the quality of the sewn product, but also the service life of the device will depend on this.
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Technology tests.
6th grade girls.
1. What are the names of the threads running along the fabric?
1. Weft threads. 2. Warp threads. 3. Edge.
2.What are the advantages of sewing with a sewing machine?
1. High-quality sewing 2. Fast sewing
3. Specify the upper threading sequence by listing the part numbers
sewing machine in the right order.
1. Upper thread tension regulator 2. Needle 3. Spool pin 4. Thread guides 5. Thread take-up.
4. How do adjusting and topstitching seams differ from pressed and pressed seams?
1. Wet-heat treatment 2. Additional machine stitches.
3. Additional strength of seams
5. From which side should the light fall when working on a sewing machine?
1 Left side 2. Right side 3. Top.
6. What threads does the shuttle lay?
1 Weft threads 2. Warp threads...
7. What determines the choice of needle and thread numbers?
1. From the density of the fabric 2. From the color of the fabric 3 From the weave
8. What parts of a sewing machine are used to thread the bobbin thread?
1. Shuttle device 2. Bobbin. 3 Bobbin case
9. What determines the size of the dart?
1. From the structure of the fabric 2. From the size of the figure 3. From the model 4. From the height of the figure
10.What signs are used to determine the direction of the warp threads in the fabric?
1. By edge 2. By stretch 3. By sound when stretched 4. By color.
11. In which direction should the flywheel be rotated?
1. To yourself 2. From yourself.
12. In accordance with the sequence of the stages of preparing the sewing
machines for work, enter the numbers that indicate them.?
1. Place the ends of both threads under the foot 2. Place the fabric under the foot
7. Turn the machine on. 8. Bring the lower thread up by turning the handwheel toward you.
13. What safety rules must be followed when performing manual work?
1. Before starting work:
b) check the presence of a rubber mat
2. During operation:
a) check the serviceability of the machine;
b) place the scissors on the right with the blades closed, pointing away from you.
3. Upon completion of work:
a) turn off the iron;
was at the beginning of work.
14. What are the features of plain weave threads in fabric?
1 Warp thread goes under two weft threads 2. Warp thread goes under one weft thread
3.The warp thread passes under several weft threads.
15. What fabrics are made from plant fibers?
1 Woolen 2. Silk 3. Cotton 4. Linen.
16.Indicate the sequence for threading the lower thread on a sewing machine, listing the numbers of its elements.
1. Bring the bobbin thread up 2. Insert the bobbin case into the hook.
3. Wind the thread onto the bobbin 4. Insert the bobbin into the bobbin case and bring the thread through the slot.
17. Indicate the sequence of preparing the sewing machine for operation, listing the numbers of its elements.
1. Place the ends of both threads under the foot. 2. Place the fabric under the foot, pierce it with a needle and lower the foot.
18. What safety rules must be observed when performing machine work?
1.Before starting work:
a) fasten the sleeve cuffs;
b) check the serviceability of the machine.
2. During operation:
a) install the bobbin case, thread the upper thread, with the
car;
b) put the thimble on the middle finger of your right hand so as not to prick it.
3. Upon completion of work:
a) turn off the car
b) remove the work place.
19. What seam is used to sew a patch pocket?
1. Hem seam. 2. Overlay seam. 3. Stitch seam.
20. What safety rules must be followed when performing wet-thermal work?
1. Before starting work:
a)) check the integrity of the cord and the cleanliness of the soleplate of the iron;
b) check the presence of a rubber mat.
2. During operation:
a) stick needles and pins only into the needle bed
b) turn the iron on and off with dry hands, grasping the plug body and not the cord.
3. Upon completion of work:
a) turn off the iron;
b) place the iron on a special stand.
21. What seam is used to sew the bottom of the product, sleeves, edges of frills, etc.?
1. Stitch seam. 2. Overlay seam 3 Hem seam with open or closed cut.
22. What are the dangers during machine work?
1. Damage caused by a finger needle. 2. Hair or clothing ends getting caught in the rotating parts of the sewing machine.
3. Burns: steam, from the sole of the iron and from fire of the cord
23. What are the dangers when performing wet-thermal work?
1. Cord fire 2. Finger injury from needle.
3. Electric shock. 4. Burns: steam, from the soleplate of the iron and from fire
24. What does a zipper replace in clothing?
1. Buttons 2. Hooks 3 Darts.
25. What are the dangers during manual work? Select the one you need.
1. Electric shock 2. Hand injury from scissors
3. Eye injury
Answer sheet
3) 3,4,1,5,4,2 16) 3,4,2,1
4) 2,3 17) 4,5,1,2,3
5) 1.3 18) 1.a); 2.a);3.a),b).
6) 1 19) Overlay seam
7) 1,2 20) 1.a),b);2.b);3.a),b).
8) 2.3 21) Open hem seam. or with zak.sr
10) 1,2,3 23) 1,3,4
12) 3,6,4,8,1,2,5,7 25) 2,3,