(Sr ) 
andmark’d with the fame Letters as in the third Figure, 
reaching from the Pipe in the Street to the Side of an 
Houle, or to the Side of one of the Polls that are fet 
up to keep off Coaches from the Foot-way. The Ma- 
chine is the Box if made of Call-Iron, fix’d to the Lead- 
en Pipe at /, with a thin Door of Plate-Iron, moving 
on Hinges, and made to lock at D. This Box Hands 
in the Street out of the way of Palfengers, with its 
Bottom fix’d to a Plank in the Pavement, fo as not 
to be damag’d by a fraall Shock or any chance Blow. 
The feveral Parts of the Machine are the followingi 
Figure 5^ ^ is an Iron Plate about an Inch thick, 
with 4 Holes at i, 2, 5, 4, of about an Inch Diameter^ 
quite thro’ the Plate, to let thro’ 4 Screws, fuch as ^ 5 
GO is a Face, or fiat Ring rais’d out of the whole 
Stuff, and prominent about of an Inch, ground, 
or turn’d to a true Flat. 5. Is an Hole of about 
Inch Diameter, to receive the Nofe of a Cock, which 
is put thro’ it, flopping with a Shoulder or Flaunch 
fcrew’d within the Circle O O by 4 other Screws^ 
mark’d with largePoints round the Hole *5. : ‘ 
Fig. 6 NN is the fame Plate feen Edge- wife. 
M is the Air-Cock fcrew’d to the faid Plate thro"^ 
the Flaunch of its Pipe at m having its Key 6, i o, faf- 
ten’d to a Rod of about y an Inch Diameter of the Fi-- 
gure 6, 7, 8, 10, having a Shank one Foot long, 8, 9 
join’d to a Buoy. or hollow Copper Bali L,. which Ball, 
when the faid Shank is in an horizontal Situation, 
keeps the Cock fhut • but falling by its own Weight,* 
when not fuflain’d by the Water, opens>the Cock by 
means of the Rod 8, 9, as may be feen in Figure 7, 
where the Plate N N is fcrew’d to the Box, and the 
prick’d Line M L fhews the^ Surface of the Water 
coming into'tlie Box thro’ the great Cock and Le’aden* 
Pipe Hly foasto make the Bail L float with its Shank 
in 
