Firearms

1. HISTORY OF FIREARM
(WHEEL LOCK)
Submitted to –
Dr. Ankit Srivastava
Submitted by –
Ahsan Ali
M.Sc (Forensic Science)
DR. APJ ABDUL KALAM INSTITUTE OF
FORENSIC SCIENCE & CRIMINOLOGY

2.  Invented in 1517.
 Invented by JOHANN KIEFUSS
 First self ignited firearm used in cock mechanism.
 Think of cigarette lighters.
HISTORY

3. Working of Wheel lock
Working – Wheel lock works by spinning a spring loaded steel
wheel against the Piece of pyrite to generate sparks, which ignites
gun powder in pan, then flashes by small hole to ignite the main charge in
the barrel. Pyrite is clamped in jaws which Rest on pan cover, when the trigger
was pulled then pan cover was opened and the wheel was rotated with
the pyrite pressed into contact.

4. Advantage -
 Shorter lock time.
 Better accuracy.
 Less weather sensitive.
Disadvantages -
Fragile operating system.
Very expensive to manufacture.

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