Casings and Covers for Underground Chambers.
Year: 1895

page_text: Date of Application, 27th Dec., 1895
Complete Specification Left, 26th Sept., 1896-Accepted, 21st Nov., 1896:
PROVISIONAL SPECIFICATION.
Casings and Covers for Underground Chambers.
We, CLAUDE MORRIS SANSOM of the Firm of Ham Baker & Co., 13 Grosvenor
Road Westminster London and FREDERICK INGHAM SPINKS in the employ of
the said firm, Engineers do hereby declare the nature of this invention to be as
follows:
This invention relates to the chambers usually constructed of brick or concrete.
surrounding underground fittings such as sluice valves, hydrants, cocks, electrical
work and the like and the improvements consist of forming the said chamber of a.
series of cast iron frames made in any required shape and having a spigot at one
end and a faucet at the other end. These special frames are formed to fit one on
top of the other so that the chamber may be extended to any desired height. The
upper section of frame may be formed with a hinged or loose cover plate in the.
usual way. The lowest section is preferably formed with a flange and may have.
slots provided to allow pipes to pass.
Dated this 24th day of December 1895.
CLAUDE M. SANSOM.
FREDERICK INGHAM SPINKS..
Casings and OS FO
CLAUDE MORRIS SANSOM of the Firm of Ham, Baker & Co. 13 Grosvenor
Road Westminster London and FREDERICK INGHAM SPINKS in the employ of
the said firm, Engineers 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 facilitate the construction of cbanbers and
surface boxes used for the protection of valves, hydrants, stop cocks and other
pieces of work fitted under ground, and the improvements consist in forming the
said chamber of a series of frames preferably made of cast iron, and having a
spigot at one end and faucet at the other. These special frames are made to fit.
one on top of the other so that the chamber may be extended to any desired
height and any number of the said frames can be used to form one complete
chamber.
Also this said chamber and cover can easily be erected in one operation by the
same man. It can also be made absolutely water and air-tight and entirely
dispenses with the use of brickwork.
Figure 1, of the accompanying drawing is a plan, Figure 2, is a longitudinal
section and Figure 3, an end elevation of the cover referred to, from which it will
be seen that we make the lowest section A with a flange "b" to form a base and
with a socket C. at top to receive spigot of the next upper section.
This lowest section may be made with a solid base when required for an air-
tight chamber, it may also be formed with an aperture B in any side to allow a
pipe to pass.

page_text: The intermediate sections are made with a spigot and socket at either end, the
spigot of one section fitting into the socket of the section below until the required
height is reached.
The upper section D is provided with spigot only and has a seating "d" formed
round the inside near the top to receive the cover plate E.
This cover-plate may be either loose, or fastened to chamber by a short chain,
or it may be provided with a hinge and lock.
The seating "d" for the cover plate may be made with a groove filled with
lead, india-rubber asbestos or other material, to form a joint, in which case the
cover plate E would then have a knife-edge rib formed on the underside which
would fit on to this seating so formed.
We may make this chamber either round oval square or rectilinear in shape
and of any required size.
We may provide apertures for connections in the sides of any of these
sections.
The arrangement herein described is suitable for chambers for sluice valves,
hydrants, water meters air valves electric light cable boxes telephone wire
chambers & other fittings placed under ground.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
The construction of casings and covers for underground chambers substantially
as described herein.
Dated this 26th der of Santamtion 100