4.b...sewing machines fms
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SEWING MACHINES
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Arm
Hand wheel Reverse stitch control.
Stitch length regulator
Thread spindle
Pressure regulator.
Thread retainer.
Take-up lever.
Thread guides.
Presser foot
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Needle bar
Needle screw
Presser bar Feed dogs
Throat plate
Needle
Stitch hole (needle hole)
Center Post
Bobbin
Bobbin case
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Shank
Heel Sole
Toes
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Arm: - It houses the drive shafts
Hand wheel: - It controls the motion of
the machine manually or electrically
Reverse stitch control: - It changes the
stitch direction.
Stitch length regulator: - It indicates and
changes the SPI (Stitches per inch) / SPM
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Thread spindle: - It holds the spool of thread
Pressure regulator: - It is the control that
regulates the amount of pressure on Presser
foot.
Thread retainer: - (Pre-tensioner) It applies
small amount of tension to the disc so that thethread will flow uniformly in the tension discs.
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Take-up lever: - It first loosens the thread for
stitch formation then removes any slack to set
or lock the stitch.
Thread guides: - (thread eyelets) they
smooth the thread and protect it fromabrasion.
Presser foot:- It holds the fabric in place for
stitching
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Take Up LeverTake-up lever: - It first loosens the thread for stitch formation
then removes any slack to set or lock the stitch.
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Thread Retainer & Guides
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Thread Spindle/Stand
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Needle bar: - It holds one or more needles and
moves the needle up and down.
Needle screw: - (needle bar clamp) it holds the
needle with the needle bar.
Presser bar: - The bar to which presser foot isattached.
Feed dogs :- (feed dog, feeder or feed) the
toothed mechanism beneath the presser footthat moves fabric forward and backward.
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Throat plate: - It protects the lower part
from building excess lint.
Needle: - It penetrates the fabric. It takes
the thread to the hook or shuttle and up
again to make the stitch.
Stitch hole (needle hole):- The hole in
the throat plate the needle carries thethread into the hole so that it can interlock
with the bobbin thread.
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Needle Bar & Screw
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Throat Plate & Needle Bar
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THROAT PLATE
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Needle Hole, Presser Foot, Feed Dog
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Feed Dog
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Bobbin Mechanism
Center Post: - A part of shuttle or rotary
hook. It holds the bobbin case in position
(stationary). Hence, bobbin and shuttle
can move independently. Bobbin rotatesabout the center post.
Bobbin: - It holds the lower supply of
thread
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Bobbin Mechanism
Hook: - A rotating device that hooks the
needle thread to carry it around the bobbin
and form the lock in the lockstitch.
Bobbin case: - It holds the bobbin
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HOOK
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Bobbin Case & Bobbin
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Bobbin Assembly
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PRESSER FOOT
Shank: - It holds the presser foot
Heel: - The back of presser foot.
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PRESSER FOOT
Sole: - (shoe or slipper) it contacts with
cloth. It helps smooth movement of fabric.
Toes: - (Prongs) the front end that faces
oncoming cloth. On zipper foot, cording
foot there is only one toe.
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PRESSER FOOT
http://images.google.co.in/imgres?imgurl=http://www.sewserg.com/images/products_spec/M_15196_SingerCombo3.jpg&imgrefurl=http://www.allbrands.com/products/abp09656-0130.html&h=299&w=300&sz=22&hl=en&start=4&usg=__5MLRraYU538cQvkLEUzXwpdo6no=&tbnid=6sWgAh0MdmggoM:&tbnh=116&tbnw=116&prev=/images%3Fq%3Dpresser%2Bfoot%26gbv%3D2%26hl%3Den -
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BED TYPES
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Flat Bed
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Post Bed
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Cylindrical bed
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Feed of the arm
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Raised Bed
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Overlock Machine
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Looper
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Different Types of Looper
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Button Hole Machine
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Button Sewing Machine
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Threading of Overlock Machine
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