FREE ESSAY ON COLEMAN FLASHLIGHT

COLEMAN FLASHLIGHT

My technical description is on my dependable Coleman flashlight. The Coleman flashlight is
a hand-sized plastic flashlight, easily portable, which will fit into most automobile
glove compartments. The Coleman flashlight has an overall length of 6 inches. It has a
diameter of 2 inches at the head of the flashlight, and narrows to 1-1/4 inches in
diameter at the battery compartment. The body of the Coleman flashlight, is basically
cylindrical in shape, black in color, high-impact plastic, and ribbed for a secure hand
grip. The Coleman flashlight consists of two major parts in which I will describe: (a)
the body, containing the battery compartment and the switch, and (b) the bulb assembly,
containing the reflector, the bulb, and the connector. The flashlight is powered by two
1.5 volt size C batteries. 
The body of the Coleman flashlight is 5-5/8 inches, with a diameter of 2 inches at the
screw, or head end, narrowing to 1-1/4 inches at the battery compartment. The interior of
the screw end is threaded, allowing for connection with the bulb assembly. 
The battery compartment holds the batteries, the power source for the flashlight. The
compartment is cylindrical, 3-1/2 inches long and 1-1/4 inches in diameter, with a coiled
metal spring on the interior of the closed end, and a 1/4-inch wide strip of gold-colored
metal running along one interior side of the compartment. The compartment holds two
1.5-volt C batteries, in a stacked position, with the negative end of the lowermost
battery in contact with the spring, and the positive end of the lowermost battery
supporting the negative end of the uppermost battery. The open end of the battery
compartment closes with the screw down insertion of the bulb assembly. 
The switch turns the flashlight on and off. The flashlight switch is located on the body
of the Coleman flashlight 1-1/2 inches from the screw end. The switch is of round black
plastic, designed to be activated with the thumb of the hand holding the flashlight. When
the switch is pushed forward, towards the larger end of the flashlight, the light turns
on. When the switch is returned back to the original position, pushed toward the smaller
end of the flashlight, the light turns off. 
The bulb assembly of the Coleman flashlight consists of the reflector, the bulb, and the
connector. When fully assembled, the bulb assembly is 2 inches long, with a diameter of 2
inches at the reflector end reducing to 3/4 inch at the contact end of the 
connector. The bulb assembly completes the flashlight by screwing into the larger end, or
head end of the body of the Coleman flashlight. 
The reflector magnifies and projects the light generated by the battery powered bulb.
When viewed from the larger end, the reflector consists of a transparent flat plastic
cover over a chrome-colored reflective plastic concaved with a central hole. The elements
are permanently attached together and housed in black plastic. The reflector screws into
the connector on one end, and the midsection of the reflector provides the main screw for
attachment to the Coleman flashlight body. 
The light source for the Coleman flashlight is a glass bulb, 1/2 inch long, permanently
fused onto a cylindrical metal base 1/2 inch long and 3/8 inch in diameter. The bottom of
the metal base has a protrusion, providing the electrical connection between the bulb and
connector. The bulb itself contains a metallic filament, one-half the length of the glass
portion of the bulb, surrounded, at a point halfway up the length, by a clouded white
plastic-like material. 
The connector connects the reflector and bulb to the battery power source. The connector
is of black plastic, ringed with a metallic collar 3/8 inch wide. The closed end of the
connector is mounted with a 5/6 inch-square gold-colored metal strip. The metal strip
facilitates the connection between the bulb and the batteries. The open end of the
connector is threaded to allow joining with the bulb and reflector. 
When fully assembled, the Coleman flashlight is a sturdy easily held tool providing light
sufficient for regular outdoor and emergency use. The compact size makes the flashlight
easily portable, and batteries and bulb are readily accessible for replacement.
Bibliography
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