London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 511
in the way proposed ; a is the door; b, the stone step or sill;c, the flags outside; </, a brass or cast-iron saddle, cast with cer- 212 !/I \ u tain perforations in it, as shown in its plan \n ^fig. 212., and incross section, nearly at full size, iny^. 213. 213 To the outside edge of the -A… … \ projecting its own thickness-J (about five sixteenths of an inch) below the bottom of the door. The saddle {d) may be either of brass or cast iron(the former is to be preferred), running all the way across thedoor, and placed, as shown in,/^. 211., over a deep channel cutlikewise all the way…
Architecture
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