In 1919 he patented in the UK an 'Improved means for increasing the draught in steam boilers, especially on locomotives.
'[2] Kylälä's invention, sometimes known as the 'Kylala spreader' involved the insertion of four nozzles in the blastpipe of steam locomotives.
[3] It was tried out in 1922 by Lawson Billinton on a LB&SCR K class locomotive, but with only limited success.
Later the French engineer André Chapelon, developed and improved the invention by using a second-stage nozzle and adopted the name Kylchap for this design.
Kylchap exhausts are found on many French and British locomotives notably the Flying Scotsman and the world record holding Mallard.