Improvements in and in connection with Cellar Plates.
Year: 1889

page_text: Date of Application, 24th Dec., 1889
Complete Specification Left, 24th Sept., 1890-Accepted, 25th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in and in connection with Cellar Plates.
1, CHARLES HILL PENNYCOOK of 9 Montrose Villas Hammersmith London W.
Engineer do hereby declare the nature of this invention to be as follows:-
The object of my invention is more effectually to secure the fastening of cellar plates,
in pavements and similar positions, and to supersede the present method of fastening
and releasing with chains and hooks. For the purpose of my invention I form the
cellar plate of any suitable substance, preferably of metal, and of any required size
and shape. On the under surface of which in any required position I affix a bolt, the
socket in which it works may be manufactured either as part of the plate or indepen-
dent thereof. On either or both sides of this socket are two arms at right angles to
the cellar plate, through which in any part I run a moveable pin or spindle. Working
on this pin or spindle and between the arms above described, is a suitable weight, the
underside of which when in position is in the form of a convex plate, corrugated or
roughened. The action is as follows, a person entering the cellar has but to press a
stick, poker, or other handy substitute against the convex surface of the plate which
withdraws the latch at the same time releasing the cellar plate. The action of
refastening the cellar plate is automatic, the weight falling and shooting the bolt or
latch into its corresponding socket.
Dated this 21th love of December 1889
GRAHAM & GRAHAM,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in and in connection with Cellar Plates.
I, CHARLES HILL PENNYCOOK of 9 Montrose Villas Hammersmith, Engineer, 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 my invention is to more effectually secure and fasten cellar plates, or
flaps, in pavements and similar positions, thus superseding the present methods of
fastening and releasing the same by means of chains and hooks.
For the purpose of my invention I construct my cellar plates of any suitable metal
or material, but preferably of cast iron, and of any required size and shape. On the
under surface in any required position a socket is either cast on the plate of which it
will then form a part, or if found more convenient it may be manufactured separately
and affixed by screws or other suitable means. In this socket, a holt of the required
shape and size, which may be made of steel, iron, or other material, is fitted to slide or
work freely in a horizontal position.
On the sides of the socket are two arms or shoulders of any suitable length, shape
and thickness which are preferably cast with the socket, of which they form a part and
should be at right angles to the cellar plate. In any part of these arms or shoulders a
moveable pin or spindle of suitable shape and material is affixed by any convenient
method. Working on this pin or spindle and between the beforementioned arms or
shoulders is a weight of any required size, preferably in the form of a tongue hollowed
on the under side, the surface of which, may be roughened to any extent required.
The upper end of this weight is formed with one or more short arms, which engage in
a corresponding number of recesses in the beforementioned bolt thus keeping the said
bolt in position and the cellar plate or flap securely locked until the weight is raised
by any person desiring to unlock the same."

page_text: The bolt is bevelled at the striking end thus making the locking of the plate
automatic. On the under surface of the cellar plate or flap, but on the opposite side
to the beforementioned bolt, in any position, are one or more hooks or lugs, engaging
in the flange of the seating or frame receiving the cellar plate or flap thus preventing
its being lifted when the bolt is shot, the bolt itself also engaging in the aforesaid
flange. when shoi.
In the accompanying drawings
Fig. 1 represents a plan of the under side of the cellar plate or flap in which, A is
the cellar plate B the seating or frame on which it rests with a flange C, with which,
both the hook or lag D and the bolt E E engage. F F are the arins or shoulders,
through which the pin or spindle G is passed on which the weight H is pivotted.
Fig. 2 is an elevation partly in section showing the positions of all the several parts
when the plate or flap is locked.
Fig. 3. is an elevation only partly in section, showing the positions of the several
parts when the plate is unlocked by raising the weight H.
The same letters refer to corresponding parts in all the drawings.
By the use of my invention the action of fastening the cellar plate or flap
is automatic and secure, as immediately it is lowered into position the bolt is shot by
the action of the weight, after which the plate can only be removed by raising the
weight from inside. The unlocking and removal of the cellar plate or flap, can only
be effected, by pressure from below on the weight in the interior of the cellar. When
such pressure is applied, the weight is raised, simultaneously withdrawing the bolt &
unlocking the plate.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
· -
1. The use of a sliding bolt, acted upon by the pressure of a weight attached for the
purpose of locking and unlocking cellar plates or flaps.
2. The automatic action of a weight on the sliding bolt, locking the cellar plate or
flap as herein substantially set forth described and illustrated.
Dated this 24th day of September 1890.
GRAHAM & GRAHAM,
Agents for Applicant.