all kinds, also Applicable for Advertising Purposes.
Year: 1888

page_text: Date of Application, 23rd July, 1888
Complete Specification Left, 18th Apr., 1889
Complete Specification Accepted, 1st June. 1889
all kinds, also Applicable for Advertising Purposes.
I, JOHN LODGE of 24 Shirland Road, Maida Vale, in the County of Middlesex
School Board Visitor, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to produce a plate which will lock itself when placed
upon the ring or stone surrounding the cellar opening, and which is also applicable
for the reception of advertisements. The improved plate is of the ordinary shape and
provided on its underside with a vertical arm, at or near its circumference, on to
which a horizontal arm is pivotted, the said horizontal arm is made of just sufficient
length to fall against and grip the sides of the ring or stone into which the plate
takes.
The vertical arm is provided with a lug which projects against a tongue-piece
formed upon the pivotted end of the horizontal arm, and prevents the said horizontal
arm from falling below the ring or stone surrounding the cellar opening.
Grooves are constructed on the upper face of the plate into which advertisements
of all kinds can be inserted, and screwed or otherwise fastened thereto by means of
screw-threaded or other holes, or by lugs constructed in the grooves of the plate, or
on the advertisements which are intended to be placed in the said grooves.
1
1000
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office,
54, Fleet Street, London, E.C.,
Agent for the Applicant.

page_text: An improved Automatio sell-locking Plate for Cemar Openings of
all kinds, also Applicable for Advertising Purposes.
I, JOHN LODGE of 24 Shirland Road, Maida Vale, in the County of Middlesex,
Engineer's Pattern Maker do hereby declare the nature of this invention 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 this invention is to produce a plate which will lock itself when
placed upon the ring or stone surrounding the cellar opening, and which is also
applicable for the reception of advertisements. The improved plate is of the ordinary
shape and provided on its underside with a vertical arm at or near its circumference,
on to which a horizontal arm is pivoted, the said horizontal arm is made of just suffi-
cient length to fall against and grip the sides of the ring or stone into which the
plate takes.
The vertical arm is provided with a lug which projects against a tongue piece
formed upon the pivoted end of the horizontal arm, and prevents the said horizontal
arm from falling below the ring or stone surrounding the cellar opening.
Grooves are constructed on the upper face of the plate into which advertisements
of all kinds can be inserted, and screwed or otherwise fastened thereto by means of
screw-threaded or other holes, or by lugs constructed in the grooves of the plates, or
on the advertisements which are intended to be placed in the said grooves.
And in order that my invention may be more fully understood and carried into
practice, I will now proceed to describe the same with reference to the accompanying
drawings which illustrate a coal plate constructed in accordance with my invention
Figure 1 is a vertical section through the centre thereof and Figure 2 is an inverted
plan. Similar letters of reference are used to indicate corresponding parts in both Figures.
The plate is preferably cast from malleable iron, the vertical arm A being
cast in one with the top B. When combining advertisements with the plate, 1 make
the letters of the advertisements from metal which fuses at a higher temperature
than the fusible point of malleable cast iron. I then prepare a suitable mould and fix
these letters therein in their proper order, and run the molten iron into the mould.
When the castings are taken from the mould, the advertisements are firmly embedded
in the upper face. Or I form the letters with lugs on their under surfaces and cast
the plate with grooves to receive the advertisement, the said grooves being provided
with corresponding holes to receive the lugs on the letters, or vice versa the
grooves
may be provided with logs taking into corresponding holes in the letters. I prefer
however to embed the letters in the casting as being more durable and less liable to
become detached by wear.
The lever or arm C and supporting ring D are cast separately from each other and
from the vertical arm and top A and B. Each is preferably cast from malleable iron,
the ring being made slightly curved or conical as shewn in Figure 1 and provided
with a ledge or shoulder E to form a seating for the plate B. The lever or arm C

page_text: is cast with the end F bevelled or tapered on the under side or it may be cast with
two or more diverging branches F each bevelled on the under side as shewn in the
drawings.
The said lever C is slightly longer than the diameter of the plate Band is fulcrumed
on the vertical arm A by a pin & preferably of copper, so that the end or branches F
just meets and grips against the edge of the conical ring D whilst the other end H
projects beyond the bottom of the said conical ring D against which it butts to
prevent the lever from falling below the horizontal. The lever is preferably
galvanised to prevent rusting..
The ring D is fixed in the stone work of the cellar top and the plate placed in
position by passing the end H of the lever C under the bottom of the ring and the
plate dropped on to the seating E when the lever C turns on its fulcrum & the end
or branches F falling against the sides of the ring, thus automatically locking the
plate. To remove the plate it is simply necessary to push up the end F of the
lever C when the plate can be raised from the seating E. If desired, the ring D may
be dispensed with, in which case, it will be necessary to form the cellar top stone
work of the shape of the ring.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is
The construction of a self-locking plate for cellar openings of all kinds, combined
and operating substantially in the manner and for the purposes herein before set forth
and illustrated in the accompanying drawings.