OIL-MILL. 
locks whic 
an 
y 
wedge being driven in very faft by the repeated blows of the 
amper V. ; 
There is likewife a {mall apparatus in an oil-mill called the 
fire gear or chaufer pan, which we have omitted in our plate. 
a {mall fire-place, fituated in the corner of the mill-houfe, 
and heated by burni in i is con- 
a crofs 
os 
=) 
produce of oil will be diminifhed. In either cafe the pan 
muft have a {mall opening on one fide, and a fluice to fhut 
it up and keep in the feed until it is properly heated. Im- 
mediately beneath the door are two hoppers, which lead the 
feed down at the fide of the furnace, and condué it into the 
flannel bags, which are hung at the lower extremity, or {ma 
ftance to retift the preffure and admit the oil through. 
bags, before they are put into the prefs, are flattened by the 
nd, and wrapped up in a long flip of very thick leather, 
which enclofes it, and prevents the bag being burft by the 
Our readers will now comprehend the ftru€ture of the 
oil-mill; but as in all operations of this nature much manage- 
ment is requifite to carry them on to the beft effect, we 
fhall briefly defcribe the procefs foHowed by our moft care- 
‘ful manufacturers of oil. : 
Linfeed and rape-feed are the produce of almoft every 
county in England, ard as the confumption of the oil for 
painting is not confined to particular places, the manu- 
crack 
much facilitates the operation of the grinding, for the grains 
$ edt. 
ower, that in {mall mills they 
cannot drive the other machines at the fame time; but this 
day’s work. 
to be ground by the runners. That this may be more expe- 
ditioufly done, one of the runners is fet about two-thirds 
of its own thicknefs nearer the fhaft than the other. Thus 
o 
ether ftone, oves the feed obliquely inwards, 
while the inner part of this rake gathers up what had fpread 
h re 
falls to the ground. In the 
troughs placed to receive it. 
eed in this country is feldom fo ripe as to yield 
ftage without preffure; but in fome mills 
rif of growmg foon very rancid, and in general it is thought 
a hazardous 
