Complex sentence: While he was a boy, he lost his father, and had to contribute to the family resources by spinning yarn, he learn to spin on James Hargreaves's spinning jenny The deficiencies of the jenny imbued him with the idea of devising something better.
Split into simpler sentences: While he was a boy, he lost his father, and had to contribute to the family resources by spinning yarn. He learnt to spin on James Hargreaves's spinning jenny The deficiencies of the jenny imbued him with the idea of devising something better.