Question

By using _______the cylinder can be rotated

• A. Feed rollers
• B. Platen knobs
• C. Ratchet wheel
• D. Escapement wheel

Answer 1

Answer:

B. Platen knobs

CYLINDER

• Cylinder is the one of the parts of typewriter
• Cylinder part is made up of rubber( Hardened India Rubber)
• Cylinder is made in Round shape in order to feed the paper properly.
• We got one impression (letter) on paper at a time due to the round shape of the cylinder 
• Handle at the either end of the Cylinder is known as Platen Knob(Cylinder knob)
• Three kinds of cylinders

                 1. Hard Cylinder

                 2. Soft Cylinder

                 3. Medium Cylinder

• Hard Cylinder is used in stencil cutting
• The Soft cylinder is used in duplicators as impression roller.
• Medium Cylinders are used for Ordinary typing
• Hard cylinders are used in typewriter for taking more number of copies.
• Usually in offices and Institutions medium cylinder is used.
• No oil should be used for cleaning rubber parts
• Slippery or damaged cylinder causes irregular line spacing.