Parts of a Sewing Machine

1. Parts of Sewing Machine
Dr Radha Kashyap
Professor & Head
Department of Fashion & Textiles
IIS( deemed to be University), Jaipur

2. SEWING MACHINE
A sewing machine is used to stitch the
fabric and other pliable materials
together with threads.
Types of Sewing machines:
Hand operated Sewing Machine
Treadle Sewing machine
Electric sewing machine

3. Categories of sewing machines
Domestic sewing
machine
 Domestic sewing machines
are designed for one
person to sew individual
dress while using a single
stitch type.
 These usually work on
lightweight fabrics or work
pieces.
 These machines run on
significantly smaller motors
compared to that of the
industrial sewing machines
Industrial sewing
machine
 Industrial sewing machines are
larger, faster, more complex,
and more varied in their size,
cost, appearance, and task.
 These are heavy-duty
machines that work thousands
of stitches per minute.
 An industrial machine is well
equipped with a clutch and
large servo motor.

4. PARTS OF HAND OPERATED SEWING MACHINE

5. PARTS OF HAND OPERATED SEWING MACHINE
Balance wheel
Stitch regulator
Needle Feed dogs
Presser foot presser
filter
Spool thread
Thread Take Up
Reverse Label
Arm
Bed

6. Arm: The horizontal upper part of the head which
has the mechanism for handling upper thread and
driving the needle.
Bed: Bed of machine is the base of the machine on
which all the attachments shuttle, feed and lower
thread handling mechanism are fixed.
Arm
Bed

7. Back Stitch lever: A lever located at the
lower right hand side of the machine. Its
function is to form the stitches in reverse
direction
Balance wheel: It controls the operation of
the machine. It is located on the right side
of the machine. It is driven by hand or belt
in the industrial machine. It controls the
movement of the needle bar and drives the
machine

8. Bobbin: A small metal spool that holds the lower
thread supply.
Bobbin case: Bobbin case holds the bobbin. It fits
into place either below the feed or to its left. This
moves into position to catch the top thread and form
the stitch as the needle is lowered into the bobbin
chamber.
Bobbin winder: A simple mechanism used for
winding thread on the bobbin. It is located at the
right hand side near the wheel.

9. Feed dog: A small oblong, metal device with teeth
which carries the material along as it is stitched. It
helps to move the cloth forward while sewing. When
the machine is in motion the feed moves upwards,
thus advancing the material as each stitch is made.

10. Head: Complete sewing machine without cabinet or
stand

11. Needle bar: This is a steel rod to hold the
needle at one end with the help of a
clamp. Its main function is to give motion
to the needle.
Needle plate or Throat plate: A semi-
circular disc with a hole to allow the needle
to pass through it.

12. Presser foot: It is a detachable device for
holding the material in place on the feed while
stitching. The presser bar to hold the cloth
firmly in position when lowered. This device is
not used when attachments such as tucker,
ruffler or binders are used.
Presser foot lifter: A lever attached to the
presser bar for raising and lowering the presser
foot. It must always be lifted to take out the
material from the machine.

13. Shuttle: A device that carries the needle
thread around the bobbin and forms the
lock on lock stitch
Slide Plate: A rectangular plate, which
facilitates the removal of the bobbin case
without lifting the machine.

14. Spool pin: It is fitted on the top of the arm to
hold the reel.
Stitch regulator: This controls the length of
the stitch. The length of the stitches have to
be regulated according to the type of the
cloth. This is done wit help of regulating
screw. Some regulators can stitch in reverse.

15. Take up lever: It is lever fitted to the body of the
arm with a small hole through which the thread
passes. Its up and down motion feeds the thread to
the needle and tightens the loop formed by the
shuttle and loosening the top thread to complete the
stitch. As the lever moves down it releases the
thread to interlock with the bobbin thread to form a
firm stitch.
Thread Cutter: It is a blade fastened to the side of
pressure foot bar. It is more convenient to use this
cutter than scissors.

16. Thread guide: It is a small hole made of
spring wire through which thread runs directly
to needle.
Tension disc: The two concave discs put
together with the convex sides facing each
other, compose the tension disc. The thread
passes between the two. The tension of the
thread is adjusted by a spring and nut which
increases or decreases pressure.

17. Throat Plate: This is a semi circular disc
with a highly polished surface and a hole
to allow the needle to pass through. The
fundamental purpose is to provide a
levelled surface for the cloth and to
prevent dust from entering the inner
mechanism of the sewing machine.

18. REFRENCES:
Garment Construction, Text book of Class XI, CBSE
https://clothingindustry.blogspot.com