Improvements in or connected with Air-tight Covers and Frames for Fitting to Inspection or Cleaning Eyes for Drains or Sewers.
Year: 1895

page_text: Date of Application, 31st Dec., 1895
Complete Specification Left, 18th Aug., 1896--Accepted, 19th Sept., 1896
Improvements in or connected with Air-tight Covers and Frames
for Fitting to Inspection or Cleaning Eyes for Drains or
Sewers.
I GEORGE HYDE, (trading as Geo. Hyde & Co.) 173 & 175, Kennington
Cross, London, S.E. Wholesale Plumber and Merchant, do hereby declare the
nature of this invention to be as follows:-
My invention relates to improvements in or connected with air-tight covers and
frames for fitting to inspection or cleaning eyes for drains or sewers, the object
being to remedy certain defects in those now in use and to provide a cover and
frame that shall be more generally useful and which will allow the said cover to
be more easily removed for inspection or other purposes than has hitherto been
the case.
In carrying my invention into practical effect, I provide a circular frame of cast
iron or other suitable material designed to be cemented or otherwise secured to the
top of the drain pipe or the like, said frame being formed with an annular groove
or recess running around the top edge of same and designed to contain a quantity
of grease or other suitable material for the purpose of making a close joint between
the frame and the cover or lid, the said annular recess also containing the means
for locking or securing the cover, the said locking device being thus protected by
the grease or other material contained within the groove or recess from the action
of the fumes or moisture from the drain so that the joint is always free and in
working condition and allows the cover to be easily removed when required.
The cover consists of a circular disc furnished with a downwardly projecting
flange designed to enter the aforesaid annular groove or recess and is secured in
position by means of two or more projecting pins or parts formed upon the inner
side of the annular recess engaging with inclined ledges or projections formed on
the flange of the cover, or vice versa, so that by rotating the cover it is securely
locked and the flange closely drawn into the groove or recess.
In order that the cover may be conveniently revolved it is formed with a central
depression within which is contained a squared projecting pin upon which any
ordinary squared key may be fitted so as to revolve the cover, while suitable
means may be provided for slightly raising the cover as it is revolved so as to break
the joint.
Dated this 21st dor of Danamban 1905

page_text: Improvements in or connected with Air-tight Covers and Frames
for Fitting to Inspection or Cleaning Eyes for Drains or
Sewers.
I, GEORGE HYDE, (trading as Geo. Hyde & Co.) of, 173 & 175, Kennington
Cross London, S.E. Wholesale Plumbers and Builders Merchant, 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 invention relates to improvements in or connected with air-tight covers and
frames for fitting to inspection or cleaning eyes for drains, sewers and the like, the
object being to remedy certain defects in those now in use, and to provide a cover
and frame that shall be more generally useful and which will allow the said cover
to be more easily removed for inspection or other purposes, than has hitherto been
the case.
In carrying my invention into practical effect, I provide a circular frame of cast
iron or other suitable material, designed to be cemented or otherwise secured to
the top of the drain-pipe or the like, the said frame being formed with an annular
groove or recess running around the top edge of same and designed to contain a
quantity of grease or other suitable material for the purpose of making a close
joint between the frame and the cover or lid, the said annular recess also containing
the means for locking or securing the cover, the said locking device being thus
protected by the grease or other material contained within the groove or recess
from the action of the fumes or moisture from the drain-pipe, so that the joint is
always free and in working condition and allows the cover to be easily removed
when required.
The cover consists of a circular disc furnished with a downwardly projecting
flange designed to enter the aforesaid groove or recess and is secured in position by
means of two or more projecting lugs formed upon the inner side of the annular
recess which engage with inclined ledges or perforations formed upon the flange of
the cover, or vice versa, so that by rotating the cover it is securely locked and the
flange closely drawn into the groove or recess.
In order that the cover may be conveniently revolved it is formed with a central
depression within which is contained a squared projecting pin and upon which any
ordinary squared key may be fitted, so as to revolve the cover.
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompany drawings in which
Fig. 1 is a plan of my improved device with the cover or lid in position,
Fig. 2 a similar view of the circular frame with the lid removed and
Fig. 3 an underside plan of the cover or lid.
Fig. 4 is a side elevation of my improved device with the locking parts of the
cover or lid shown in dotted lines and Fig. 5 is a sectional view of same.
According to my invention I provide a circular frame f furnished with an annular
recess or channel c of a sufficient width and depth to receive the flange f' of the
said lid or cover l. Upon the inner side of the channel or recess care cast or
formed lugs a, a, (Figs. 2, 4, and 5) designed to engage with the inclined ledges b, b,
formed upon the inner periphery of the flange f¹ of the lid l, so that upon placing
the lid in position and revolving same the flange f¹ is closely drawn into the recess
or channel e as shown at Fig. 4, the said recess or channel being filled with grease
or other suitable substance or material, which protects the locking parts from the
moisture or fumes from the drain and always keeps the joint free, so as to allow of
its being readily opened when required, whereas with many of the devices as at

page_text: "
present constructed the joint frequently becomes "set and great difficulty is
experienced in removing the cover when required.
In order that the cover or lid may be conveniently revolved it is furnished with
a projecting pin or stud p contained within a depressed portion d of the cover or
lid 1, so that upon fitting any ordinary squared key to the pin or stud p the lid
may be revolved for locking it in position, while in order to remove same it is only
necessary to revolve the cover or lid in the reverse direction until the inclined
ledges bare free from the lugs a when it can be lifted out, or if preferable it can
be further revolved until the lower inclined edge of the ledges comes against
and into contact with the opposite lug, in the reverse direction to that employed
for locking the cover or lid, which tends to raise the said cover or lid out of the
annular channel or recess and allows of the fingers or any suitable instrument or
device being inserted under same for the purpose of lifting it out.
The lower edge of the circular frame f may be furnished with cut away parts
such as 9 so as to afford or take a firm grip or hold of the cement or the like
employed for securing it to the top of the pipe, while if required one or more
heightening rings, such as indicated in dotted lines at h (Fig. 4) may be
employed.
ww indicates strengthening ribs or flanges.
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 new or improved air-tight cover and frame for fitting to inspection or
cleaning eyes of drains, sewers or the like, substantially as herein described and
shown and for the purposes specified.
2. In frames and covers for fitting to inspection or cleaning eyes for drains,
sewers or the like, the formation and arrangement of the locking parts which may
comprise lugs such as a, a, and inclined ledges such as b, b, in such a manner that
they are contained within a deep recess or channel designed to be filled with
grease or other protective material, substantially as herein described and shown
and for the purposes specified.
3. In frames and covers for fitting to inspection or cleaning eyes for drains,
sewers or the like, the means for turning or revolving the lid, comprising a squared
pin or stud p contained within the depressed or sunken portion d of the lid or
cover, and designed to be revolved by means of any squared key, substantially
as herein described and shown and for the purposes specified.
Dated this 12th day of August 1896.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.