Ar^/^^'fJ' 



K. ^^i..^'' /M^'^ 



\ ./ 



Figure 8. — Bedstead invented by Perigrine Williamson, for which a patent was issued on December 6, 1821 



(restored patent 3415X). 



118 



BULLETIN 24 1 : CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY 



