ituations the water would require to be raised by a separate pump , or the cistern placed low enough to admit of the water running in from an adjoining pond . We give a Plate of a Winding Engine of approved construction , erected in 1881 for a pit belonging to the Benhar Coal Company , at Niddrie… … Fig . 151 . — Blowing Engine . Side Elevation . engine . ” This engine delivers the air into a receiver , the pressure varying from 2 to 4 lbs . per square inch , or a mean of say 3 ^ lbs . , that being the pressure on the large piston of the blowing cylinder ,
e-rara · Eisenbibliothek Schlatt · No known copyright restrictions. Free to use for anything.
![An illustration from [Volume I.], leaf 274](https://img.insideoutlibrary.com/img/1024/erara-31314765-274-1.webp)
