The book of wonders : $b gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer...
Science
The book of wonders : $b gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer...
Curiosities and wonders; Encyclopedias and dictionaries; Questions and answers; Science -- Miscellanea; Technology -- Miscellanea
Incredible as it may seem, it was not a time well within the memory
of many people living to-day that matches in anything approaching
the form now familiar were offered to the public. The way for their
manufacture had been prepared by two discoveries; one by a German who
isolated phosphorus in 1669; the other by a Frenchman who produced
chlorate of potash in 1786. From this latter date the production of
fire was much facilitated, and a few years before Queen Victoria came
to the throne, John Walker--a chemist of Stockton-on-Tees--produced the
first friction matches of which there is any certain record. These,
called “Congreves,” were sold in boxes of fifty for 2/6, and their
success soon led others to experiment in match manufacture, so that
improvements were rapidly invented and factories sprang up in all parts
of the country.
It would be a difficult task to compute accurately the value to the
human race of the introduction to general use of this little article.
At the present writing, in America the consumption of matches amounts
to over a billion of matches a day.
How Matches Are Made.
To-day matches are in such demand that the ingenuity of man has devised
a machine which makes complete matches without the help of the human
hand.
At the very start of operations a man feeds blocks of wood into the
jaws of the machine, and thenceforth the mechanical monster does its
own work. Seizing the block from the man’s hand, the machine grips it
between rollers and forces it against rows of keen-edged cutters, which
are so arranged that there is little or no waste. Each of these cutters
(and there are usually forty-eight in a machine) severs a piece of wood
of exact size and shape. At the same moment a plate rises from beneath,
which thrusts these little pieces of wood into a moving flexible
cast-iron band, or rather into small holes in this band, from which the
embryo matches project like bristles. This traveling band is about 700
feet in length, and follows a serpentine course in its journey, which
occupies about an hour from start to finish, the speed being regulated
according to temperature so that the matches may be quite dry when they
reach the boxes.
When the band arrives at the finishing point, a steel bar punches out
the matches stuck in its surface and they fall into the inside boxes
placed ready to catch them. These boxes are kept continually shaking,
to that no spaces are left and the matches fill them completely. As the
inside boxes fill, a steel arm presses them forward into their covers,
and they are passed along a trough in dozens, quickly wrapped in paper
and sealed by a machine. Quick-fingered girls then wrap twelve of these
dozen packages and we have the gross packages of boxes so familiar in
the stores. It will be seen, that in spite of the marvellous machines
which do so much, there is still plenty of work for human hands.
How Match Boxes Are Made.
Public-domain text, read in full here on John Shaqi.
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