Are You A Deaf ?
I was conducting some study to understand
how a blind can perform industrial activities in a competitive level, and how he
can compete with the sighted normal workers in their performance rating.
My friend promised to allow
me into his production centre and show me one of the blinds perform an industrial
activity. I was delighted very much and did not waste any time. I rushed to
My friend permitted me to go and stand
by the side of a particular worker. He was working on a lathe. The lathe was installed
by the side of a partition wall, at an acute angle.
The worker was standing at the right
side of the machine. He was doing chamfering Operation on a cylindrical iron bit
of about 0.75 inch diameter and 1.5 inch length.
For convenience sake we will name
the worker as “Mr. Lo”. Mr.Lo was executing a number of movements with both his
hands at a very rapid speed. I found it very difficult to follow the movements
so that I could evaluate them. After a few minutes of careful observation I was
able to follow the sequence and order. The cycle started with Mr.Lo grasping a “T”
shaped key with his left hand and bringing it to the chuck of the lathe. During
the movement of his left hand the right hand was activated and brought to the jaws
of the chuck. He then turned the key with both hands, in anticlockwise direction
and opened the jaws. While the jaws were being opened the right hand removed a finished
bit from the jaws and dropped it into a receptacle just below the jaws. The left
hand removed the key to a designated point near and above the chuck head while the
right hand went and picked up a work piece (bit) to the jaws. During this movement
towards the jaws the fingers of the right hand detected the plain surface of the
bit by tactile impressions. He then introduced the bit into the jaws. While this
operation was going on the left hand searched and picked up the key and brought
it over to the tightening point. While the jaws were being tightened by a clockwise
rotation of the key, the right hand fingers measured a certain distance (approximately
.75 inch) on the bit and introduced that much length into the jaws. During the inserting
period, the jaws were being closed with his left hand. After the proper insertion
of the bit the right hand joined the left hand and helped it to give a final tightening.
He then took out the key from the chuck tightening screw and brought it to the designated
point and moved his left hand towards the switch and located it and operated it.
While these movements were activated by the left hand, his right hand moved towards
the hand wheel and rotated it and moved the tail stock with a drill bit towards
the chuck head. Just a fraction of a second before the drill bit touched the blank
surface of the “Job” the rotation of the chuck started. In about two seconds the
chamfering operation was over and his right hand could sense the tightness on the
hand wheel which indicated that the work was over. His left hand switched off the
lathe and moved towards the key and brought it to the chuck loosening point. During
this activity he simultaneously removed the drill fitting towards his right side.
Then his right hand was brought near to the jaws for the removal of the finished
part from the jaws.
One cycle of operation was over. All
these movements of his upper extremities took only 39 Seconds!!
The second cycle started without any
I was astonished by the rapidity of
the activities without any idle time for the man or the machine. After thirty minutes
of observation I decided to find out whether the operator is a blind person as told
by the proprietor. I could not go to a convenient point to look straight into his
eyes. All around me there was some material or other on the floor. I went very near
to him and kept my mouth into his ear and asked What is Your Name?, expecting him
to turn towards me so that I could scrutinize his eye. No response was the result.
Are You A Blind? Again no response.
Are you A Deaf? No response.
What is he then? I was determined
to find out the fact. I approached one of the directors. He confirmed that Mr.Lo
is a totally blind person.
I came to my residence disappointed
without any reason.
understand that a blind cannot be distracted by any visual attraction. A blind can
concentrate fully in his work, because he really enjoys his work. We should also
understand that a blind will, some time behave like a deaf, towards a strange observer
although blinds are very talkative normally.
With continued training and safe practices a blind can
execute fast and precision movements by his hands. He should be allowed to
take a break whenever he needs recovery time as per his own perception of the fatigue,
to avoid accidents due to fatigue.