 Hoyland and Fox’s Chief engineer Joseph Hayward set up business to produce the patented "Flexus" frame as an alternative to Fox' "Paragon" frame.The "Flexus" frame is built up of solid ribs with flat spring stretchers coupled in pairs and in such a manner that all the stretchers were under tension when the frame was in any position except when fully closed.Samual Fox became the largest umbrella frame manufacturer in the world around the turn of last century.