Improvements in Means for Fastening the Lids of Service or Surface Boxes and the like.
Year: 1891

page_text: Date of Application, 19th May, 1991
Complete Specification Left, 17th Feb., 1892-Accepted, 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Means for Fastening the Lids of Service or Surface
Boxes and the like.
GEORGE PHILLIPS JONES Britannia House Loughboro' Leicestershire Engineer.
I do hereby declare the nature of this invention to be as follows:
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My object is to provide a simple locking attachment for the lids of "service or
surface boxes and other covers usually fixed in places accessable to the public,
so as to prevent the same being removed or tampered with by children or unautho-
rised persons to the danger of the public. On the frame or body of the box, a
circular nib, bevelled on the under side is fixed, at or near the level of under side
of lid; the attachment to lid consists of a revolving boss, with a circular bevel
on the under side, the curve of this circular bevel being struck slightly eccentrically
to circular nib on box; at the opposite side of box to that on which circular nib is
fixed, a recess or rebat is formed, so that lid being placed in recess or rabit and
circular boss turned, causes the two bevels to wedge themselves thus locking the
lid to box as described above.
1201
1001
COMPLETE SPECIFICATION.
Improvements in Means for Fastening the Lids of Service or Surface
Boxes and the like.
GEORGE PHILLIPS JONES Britannia House Loughboro Leicestershire Engineer.
I 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:—
My object is to provide a simple locking attachment for the lids of service or
surface boxes and other covers usually fixed in places accessable to the public, so
as to prevent the same being removed or tampered with by children or unauthorised
persons to the danger of the public. On the frame or body of box, a circular nib,
bevelled on the under side is fixed, at or near the level of under side of lid; the
attachment to lid consists of a revolving boss with a circular bevel on the under
side, the curve of this circular bevel being struck slightly eccentrically to circular
nib on box; at the opposite side of box to that on which circular nib is fixed, a
recess or rebat is formed, so that lid being placed in recess or rebat, and circular
boss turned, causes the two bevels to wedge themselves, thus locking the lid to box
as described above.
Fig. 1. 2. 3. & 4 in the accompanying drawing shew this arrangement.
Fig. 1 is a vertical section of a service or surface box, (such as is generally used
for covering gas and water valves) with the locking arrangement herein referred to,
attached.
Fig. 2 is a plan of the same.
Fig. 3 is an enlarged part section of the locking arrangement, and
Fig. 4 is a plan of the same.
On the frame or body A of the box, a nib' or 'lug B is formed, at or near
the level of the under surface, or side, of the lid C. This nib, or lug, is bevelled
on its inner, or under side as shewn. It may also be suitably curved as shewn
in Fig. 4. In a suitable hole in the lid C (at or near, its end) a 'plug or
'boss D is placed, and free to be turned in the said hole. Attached to the
037

page_text: under side of the said plug or boss D, and forming part of same, is a circular,
or partly circular, bevelled collar E. The bevel on the said collar E, corre-
sponding to, and engaging with, the bevel on the before mentioned nib, or lug B.
The bevelled portion of the said collar E, is made slightly eccentric to the centre,
or axis, of the said plug or boss D, (as shewn in Fig. 4) so that when the said
plug or boss D is turned (by means of a suitable key) in the direction of the
arrow F, (Fig. 4) its centre, or axis, is caused to move in the direction of
arrow G.
At the opposite side, or end, of the box A (to that at which the
said nib or lug B is placed) a recess, or 'rebat,' H (Fig. 1) is formed, the end
of the lid, C, being suitably shaped so as to enter the said recess, or rebat, H,
(as shown in Fig. 1). It will be seen that when the lid C, is placed in position,
as shewn in Fig. 1, and the said plug, or boss, D is turned in the direction of
arrow F, (Fig. 4) the one end of the lid C will be forced into recess, or rebat, H,
and so held down, while the other end of the lid, C, will be held down by the
bevelled collar, E, (on the said plug or boss, D,) and the nib, or lug, B, and
that by turning the said plug, or boss, D, with a sufficient force in the direction
of the arrow F (Fig. 4) the lid, C, is firmly locked in its place. It will be
seen that this arrangement is applicable to other forms of service, or surface boxes
than that shewn.
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,
The method of, and arrangement for fastening, or locking, the lids of service
or surface boxes, substantially as herein before described, with reference to the
accompanying drawing.
Dated this 16th day of Wabruary 1800
GEO. P. JONES.