Improvements in or applicable to Man-hole Covers for Sewers, Drains, and the like
Year: 1890

page_text: Date of Application, 13th June, 1890
Complete Specification Left, 5th Mar., 1891-Accepted, 11th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Man-hole Covers for Sewers,
Drains, and the like.
We, JAMES GIBB and CHARLES JOHN PIEJUS, both of 99, Fenchurch Street,
in the City of London, Merchants, do declare the nature of this invention to be as
follows:-
This invention relates to improvements in or applicable to man-hole covers for
sewers, drains and the like, whereby the man-hole can be easily changed from a
ventilating to a closed one or vice versa.
In carrying out our invention we employ an annular shaped bucket as usual, but
to the central opening in the bottom thereof we apply a plate adapted to be opened
or closed by means of a handle attached thereto, and coming level or thereabout
with the top of the bucket. Space is provided if necessary for a wire basket for
charcoal.
By this arrangement we provide a simple means whereby a man-hole in any
locality can be at once closed.
The action of our ventilator being distinct from the bucket does not in any way
interfere with the free access of dirt thereto.
It will be obvious that a simple tube can be employed in place of an annular
bucket.
Dated the 13th day of June 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or applicable to Man-hole Covers for Sewers,
Drains, and the like.
We, JAMES GIBB and CHARLES JOHN PIEJUS, both of 99, Fenchurch Street,
in the City of London, Merchants, 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 :—
This invention relates to improvements in or applicable to man-hole covers for
sewers, drains and the like, whereby the man-hole can be easily changed from a
ventilating to a closed one or vice versa.
In carrying out our invention we employ an annular shaped bucket as usual, but
to the central opening in the bottom thereof we apply a ventilator plate or valve
adapted to be opened or closed by means of a handle attached thereto, and coming
level or thereabout with the top of the bucket. Space is provided, if necessary, for
a wire basket for charcoal.
In order to enable our invention to be fully understood we will describe the same
by reference to the accompanying drawing, in which,
Figure 1 is a vertical section of a man-hole cover provided with our improvements,
the ventilator plate or valve being shewn in its open position.
Figure 2 is a similar view to Figure 1 but shewing the ventilator plate or valve
in its closed position.
a is the usual annular shaped bucket and shews the ventilator plate or valve
which we adapt to the central opening c of the bucket a; d is the handle for
operating the plate &; this handle passes through a slot in the cross piece e and is
attached to the ventilator plate b; if the plate is in its open position as shewn in
...

page_text: Figure 1, then to close the plate it is simply necessary to pull up the handle, and
give it half a turn, when the plate will be held in its closed position as shown in
Figure 2. Or we may employ a screwed spindle to be operated by means of a key
passing through the centre of the cover for opening and closing the ventilator
plate. represents a wire basket for holding charcoal.
By our arrangement it will be obvious that we provide a man-hole cover which
can be at once converted from a ventilating cover into a close cover or vice versa.
The action of our ventilator being distinct from the bucket does not in any way
interfere with the free access of dirt thereto, thereby keeping the openings in the
cover clear at all times.
It will be obvious that a simple tube can be employed in place of an annular
bucket.
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 :-
(1.) A man-hole cover for sewers, drains and the like having a ventilator plate
or valve with means for opening or closing the same, substantially as, and for the
purpose, described.
(2.) The manufacture and use of the improved man-hole cover hereinbefore
described and illustrated in the accompanying drawing.
Dated the 5th day of March 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.