sentences:  His efforts were concentrated upon a Bill extending the existing Factory Acts (which gave some protection to children working in the cotton industry) to other textile industries, and reducing to ten per day the working hours of children in the industries legislated for.In 1815 Sir Robert Peel (father of the Sir Robert Peel leading the Tories in the Commons when Sadler was an MP) had introduced a Bill which was to apply to all children in "textile" mills and factories.Children under "ten" were not to be employed; children between "ten" and "eighteen" could work no more than "ten" hours a day, and nightworking by them was banned.