IMPROVEMENTS IN COAL PLATES AND OTHER COVERS FOR CELLAR OPENINGS
Year: 1884

page_text: PROVISIONAL BREVIFIOATION.
We ROBERT HENRY PEARSON and JONATHAN PEARSON both of 141 & 143 High
Street Notting Hill Ironmongers and WALTER EYRE of 19 Binden Road Starch
Green Draughtsman, both in the County of Middlesex do hereby declare the
nature of our invention for IMPROVEMENTS IN COAL PLATES AND OTHER COVERS
FOR CELLAR OPENINGS to be as follows:—
The object of the improvements is to provide a coal plate or cover for a cellar
opening that shall be readily removeable and applicable to close such opening from
the inside so as when applied to effectually prevent illicit removal from the outside
and to be adapted to withstand reasonable wear and tear without getting out of
order and be simple in operation.
The plate to be secured in its place over the opening to the cellar is provided
centrally with a stem to which at its end are hinged or centred arms the ends of
which are formed to come under or lock against the ring or circular setting into
which the plate rests when such arms are inclined outwards or away from the
central stem and to fold to such central stem when the plate is to be unlocked and
removed. A piece formed to slide upon the central stem and provided with arms
which by pins thereon passing into slots, or openings in the hinged arms serve to
control the motions of the hinged arms when such central sliding piece is operated
by an arm or link attached to that piece and passing down to within the cellar so
as to be readily accessible to the hand of the operator. The slots may if desired
be formed in the arms of the sliding central piece and the pins may be formed on
the hinged pieces or these connections may be of other equivalent character adapted
to the object.
Recesses in a projecting flange or part on the underside of the plate serve to
guide and protect the ends of the hinged arms.
The operation of the parts is as follows: the plate with the central sliding piece
is forced up and the hinged pieces closed in towards the central piece by the act of
the plate being inserted in the opening of the coal or other cellar and the weight of
the rod attached to the central sliding piece added to that of that piece itself will
force apart the hinged pieces and cause them to separate to the full extent permitted
by the arms of the sliding piece and so as to lock these arms under the ring or bed.
To remove the plate, which can only be done after unlocking the device from below,
by means of the arm or link, raising the sliding piece and drawing in the hinged
locking arms, the plate can be removed.

page_text: COMPLETE SPECIFICATION..
We ROBERT HENRY PEARSON and JONATHAN PEARSON both of 141 & 143 High
Street Notting Hill Ironmongers and WALTER EYRE of 19 Binden Road Starch
Green Draughtsman both in the County of Middlesex do hereby declare the
nature of our invention for IMPROVEMENTS IN COAL PLATES AND OTHER COVERS
FOR CELLAR OPENINGS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
The object of the improvements is to provide a coal plate or cover for a cellar
opening that shall be readily removable and applicable to close such opening from
the inside, so as when applied to effectually prevent illicit removal from the
outside; to be adapted to withstand reasonable wear and tear without getting out
of order and be simple in operation.
The accompanying drawings will render the construction and operation of the
apparatus readily comprehensible.
Figure 1 shews a sectional view of the coal plate and locking parts in situ in the
opening they close. Figure 2 shews an external side view taken at a right angle
to Figure 1 and Figures 3 and 4 upper and underside view of the same
respectively.
Figure 5 shews the notch in cover at A'. A¹ in side elevation.
The plate A to be secured in its place over the opening B to the cellar is provided
centrally with a stem a to which at its end a³ are hinged or centred arms a³ a³ tho
ends of which are formed to come under or lock against the ring or circular setting
into which the plate A rests when such arms are inclined outwards or away from
the central stem a and to fold to such central stem a when the plate A is to be
unlocked and removed. A piece c formed to slide upon the central stein a and
provided with arms c¹ which by pins c³ thereon passing into slots a* or openings in
the hinged arms a³ serve to control the motions of the hinged arms a³ when such
central sliding piece a is operated by an arm or link d attached to that piece at d³
and passing down to within the cellar so as to be readily accessible to the hand of
the operator. The slots at may if desired be formed in the arms c¹ of the sliding
central piece c and the pins may be formed on the hinged pieces a³ or these con-
nections may be of other equivalent character adapted to the object. Recesses a³
in projecting flange A¹ or part on the under side of the plate A serve to guide and
protect the ends of the hinged arms a³.
The operation of the parts is as follows the plate A with the central sliding
piece c is forced up and the hinged pieces a³ closed in towards the central piece a
by the act of the plate A being inserted in the opening B B of the coal or other
cellar and the weight of the rod d attached to the central sliding piece c added to
that of that piece c itself will force apart the hinged pieces a³ and cause them to
separate to the full extent permitted by the arms c₁ of the sliding piece c and so as
to lock these arms a³ under the ring or bed 6 To remove the plate A which can
only be done after unlocking the device from below by means of the arm or link d,

page_text: raising the sliding piece c and drawing in the hinged locking arms a³, the plate A
can be removed.
The dotted lines in Figure 1 of the drawings indicate the position of the arms a³
when drawn in towards the central stem a by the raising of the central sliding
piece o by the pushing up of the rod d from within the cellar and this piece by
means of its studs of engaged in the slots a' in the arms a³ raises and so controls
those arms a³.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is
The improved construction and arrangement of parts of coal plates and other
covers for cellar openings as and for the purpose substantially as set forth.
Dated this 17th day of July 1885.
W
BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the said Robert Henry Pearson,
Jonathan Pearson, and Walter Eyre,