Another cause which acted in the direction of increasing the demand for yarns and weft was the invention of the _flying shuttle_ by John Kay about 1738. Previous to his time, the heavy shuttles containing the wefts were sent across the looms by two persons. Now, by his new shuttle he dispensed with the services of one of these artisans, and by means of his arrangement for quickly sending the shuttle along the lathe of the loom, much more cloth was produced. Poor Kay suffered much by the cruel persecution of his countrymen, who ignorantly supposed that in bringing his new shuttle to such perfection, they would be deprived _permanently_ of their occupations, with nothing but starvation looking them in the face. Of course, nothing could be wider of the truth than this, but Kay had to flee his country, and died in poverty and obscurity in a foreign land. Still the shuttle continued to be used, for the makers of cloth had learned that increased production meant more work, and possibly greater profit, and though Kay disappeared, his works remained behind. The demand for weft grew more and more. It has been said that it is the occasion which makes the man, and not man the occasion. It was so in this case, for here was a cry for some mechanical means to be discovered for satisfying the ever-increasing demand for cotton weft. Hitherto single threads only had been dealt with on the spinning machines, but the same year witnessed the introduction of an invention which in a few years completely revolutionized the spinning industry, and which enabled one worker to spin hundreds of threads at once. The year 1738, which witnessed the birth of Kay's invention, also saw that of Lewis Paul, an artisan of Birmingham. This was a new method of spinning by means of _Rollers_. It should be remembered that this was thirty years before Arkwright attempted to obtain letters patent for his system of spinning by rollers.