$24 A Defcription of Mr. Dearsorn’s Fire-Engine. 
-upper end being bored hollow, far enough. down to commini- 
cate with the braces. O P is'an iron rinz going round the tibe, 
having two thanks 3 going, up through the head, with fcrews on 
the top at p q. SA s is a ferrule nailed round the tube.y The 
head, and. pipe:are fo nearly: fimilar to, Mh of the pompengine 
that. they, need no further. deferiptian; dh wb uod X 
Fig.2..is the. fame engine ; - the ; arms: e andi rds. being, 
taken. off to. give a more intelligible defcription | of the;maode: of 
fecuring. the braces, which i is. effectually, done, by. one wedge. 
driven i into thé 1 mortice 2, under. the upper plank. 4 isa hole, 
for the. bolt t to. pas. through. which. Áecures the Aftaridards,- . An. 
| s figure a fide view of the bead í is, given, riui she Tues in. a 
Span direCtion. | 2 
The work i is. confined odie g a box fet on. ulis as. dae 
mon. The whole is made of woed except. the, fpears. of. the. 
xd Muro and a few. bolts, &c. This model throws: water about. 
the fame diftance as the miniature pump-engine, the pumps :be-. 
ing. of the fame bore, . Engines-on this conftru&tion may. be 
made in any place where a common pump can. jand the infide 
work will not be more than one quarter, the. coft of thofe on, the. 
ufual conftruétion ; and the. labour of Mia them. will. (as 
I conceive) be much leí; than in the others ; thefe confidera- 
tions may rpg peommend them. to ome attention. : 
D t 
TEN 
