Piat installed its "stepless" escalator in Harrods Knightsbridge store on Wednesday, November 16, 1898, though the company relinquished its patent rights to the department store. Noted by Bill Lancaster in The Department Store: a Social History , "customers unnerved by the experience were revived by shopmen dispensing free smelling salts and cognac."  The Harrods unit was a continuous leather belt made of "224 pieces . . strongly linked together traveling in an upward direction," and was the first "moving staircase" in England.