Check my headlines please?

This new invention will blow your mind
Walter Hunt, a mechanic from New
York has patented a new invention.
The builder of America’s first sewing
machine has invented the safety pin, a
fastening pin that can hold many
things together with ease. Hunt is the
inventor of many gadgets, including a
knife sharpener, artificial stone, ice
ploughs, and a street car bell.

No more awake!
Surgery will no longer be painful,
thanks to a wonderful new
invention. American dentist
William Morton has discovered a
way to put patients to sleep while
they undergo medical procedures.
Medicines called anesthetics, put
patients into a sleep-like state
where they do not feel the pain.

Typos can now be corrected with this new invention
A new invention makes it easy to
fix mistakes. A Dallas secretary
mixed up a batch of liquid paper
(known as “mistake out” or “white
out” and created a substance that
can cover up mistakes made on a
typewriter. The concoction is a
mixture of paint that can be
brushed over the mistake.