extremity with an appendage, r, which slides over a catch, r'. This
latter is attached to the disk, m, at the lower extremity of the pin, j
(Fig. 7), and takes exactly the proper position when the band is closed
at the moment of charging, but leaves it, on the contrary, when the band
is loosened to allow the oil cake to drop out.

As the lateral flow takes place through the interstices of the brass
lining, there is need of but one cushion on the bottom and another
at the top to hold the material to be pressed. The first is a simple
hair-cloth disk for preventing the seed from passing through the
perforations in the bottom plate; and the second, O, of which Figs. 12
and 13 represent a segment, is formed of three thicknesses of the same
material united at the edges by two flat iron circles, s, riveted
together. These circles, which are made to fit the inside diameter of
the shells very accurately, prevent any leakage of the oil around the
presser, G, and keep the hairs from getting caught between this piece
and the plates, b.

_Charging of the Filter_. (Figs. 14 and 15.)--The apparatus for charging
the filter is of the same capacity as the latter, and is made of
galvanized iron. It is placed on a slide at the aperture of the steam
kettle so as to receive the warm seed as it is thrown out by the
stirrer. When full, it is taken up by its handles, rested on the rim of
the filter, and its contents emptied therein.

_General Manipulation of the Press_.--Supposing the filter in the
position shown in Figs. 3 and 4, at the moment the seedcake is about to
drop out: the operator takes hold of the lock lever, N, with his left
hand, raises the bottom, K, to a horizontal position, and at the same
time fastens the bolt of the lever by turning it. He then seizes the