Improvements in or relating to Gully Traps and the like.
Year: 1895

page_text: Date of Application, 17th May, 1895
Complete Specification Left, 17th Feb., 1896-Accepted, 21st Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Gully Traps and the like.
I, FREDERICK SIGISMUND SALBERG, of 23 Garlick Hill in the City of
London, Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to gully traps and the like, one particular application for
which it is particularly suited being to the ordinary sewer gullies of the streets.
The invention provides flaps or lids which are adapted normally to close the
opening in the gully and may carry a disinfectant and be arranged at each operation
to discharge some of the disinfectant on to the water or sewage; the structural
details may vary but the principle and operation will be understood from the
following description
:-
I may either fix the apparatus in a special framework of its own or I may employ
the ordinary street gully and in this place the apparatus which comprises the
following parts:
One or more conveniently two flaps pivotted and slightly overbalanced so that
they normally lie distended in a plane more or less horizontal or are otherwise
arranged to close the opening as perfectly as practicable, whether by fitting closely,
by a water seal or otherwise. If disinfectant is used each flap may be provided
with a perforated box or other receptacle for containing the disinfectant material
which may be in the form of a powder adapted to escape through one or more
perforated walls of the receptacle, or it may be in the form of a block or blocks
adapted to slide upon the rough interior of the perforated wall, and so scrape off
some of the material and discharge it in the form of powder at each operation of
the flaps. The same object might be attained with liquid disinfectant but I prefer
to use it in the solid form. The receptacles may be made to slide in grooves upon
the lid or may be otherwise temporarily or permanently secured.
Preferably the lids or flaps are pivotted in a casing adapted to contain them and
closing over any space between the flaps and adapted to direct the water or sewage
ou to the flaps and to cover and protect their hinged portions. The whole of this
apparatus may be made removable and so as to slip in the frame or gully which is
to receive it, and stops or projecting ledges or equivalent may be provided to close
over the space at the edges of the flaps. The casing or gully may be closed in by an
ordinary or special grating.
Dated this 17th day of May 1895.
BOULT & WADE,
Agents for the Applicant.

page_text: Improvements in or relating to Gully Traps and the like.
1, FREDERICK SIGISMUND SALBERG of 23 Garlick Hill, in the City of
London, 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 :-
This invention relates to gully traps and the like, one application for which it
is particularly suited being to the ordinary sewer gullies of the streets. The
invention provides flaps or lids which are adapted normally to close the opening in
the gully and may carry a disinfectant and be arranged at each operation to
discharge some of the disinfectant on to the water or sewage; the structural details
may vary, but the principle and operation will be best understood by reference to
the accompanying drawings in which :-
Figure 1 is a transverse vertical section of a gully trap constructed according to
this invention.
Figure 2 is a plan of the underside thereof, and
Figure 3 is a perspective view of a detached portion of the same.
Like letters indicate like parts throughout the drawings.
The frame or casing A and grid or grating B of the gully-trap may be of any
ordinary construction, in the drawings the former (A) is of rectangular form and
provided with a ledge A¹ on each of its end walls, and the latter with ribs B' which
enable it to maintain its proper position on the casing A.
If desired the ledges A¹
may extend completely around or be formed on all the walls, or be provided only
at the corners of the casing A and the grid B may be hinged or otherwise fitted
to the casing A.
Inside the casing A fits a frame C which is supported on the ledges A' and which,
after the grid B has been removed or opened, may be lifted out of the casing A by
means of two rings or equivalent C¹. The frame C is provided with two doors or
flaps D pivotted on bars C² so that they may open downwards as indicated in dotted
lines at the right hand side of Figure 1. The flaps D are acted on by springs E or
are counterbalanced so as to normally remain in their closed position with their
free edges pressed against the frame C just sufficiently to prevent the escape of
sewer gas or the like; the springs E yield when additional weight such as that of
rain water, mud or other sewage matter, is imposed upon the flaps D, so as to
allow the flaps to open and admit such sewage matter into the drain to which the
gully trap is fitted or connected.
The pivot rods or hinges of the flaps D are covered by a curved or equivalent
plate or ridge C³ formed in part with the frame C so that the sewer gases cannot
escape at this part and the sewage matter is prevented from coming into direct
contact with and corroding the hinges.
The frame C shown in the drawings is provided with a central web or mid-rib C*
which provides an abutment surface for the springs E, but if desired this mid-rib
may be dispensed with and other abutment surfaces provided, or said mid-rib may
extend only a short distance down from the ridge plate C³.
At the underside of each flap D I provide a box or receptacle F for containing
disinfecting material which may be in the form of either a solid block, powder or
liquid, the receptacle being perforated to admit of a small quantity of the
disinfectant being discharged through it each time the flap is moved. If the
disinfectant be in solid form the receptacles F are provided with abrading surfaces
against which the disinfectant rubs (or vice versa) each time the flaps move, so as to
detach particles of the disinfectant, which fall through the perforations of the
receptacles F. The receptacles F may conveniently be secured to the flaps D by

page_text: means of a grooved frame or equivalent G which admit of the said receptacles
being readily detached for filling with disinfectant or other purposes.
The flaps instead of being mounted in the frame C may be mounted directly in
the casing A though the arrangement shown is that which I prefer, as, in this
arrangement the whole device may readily be removed from the gully trap and
free access thereby had to the drain.
The before described apparatus may be modified without departing from the
spirit of the invention for example I may use one instead of two flaps and each
such flap may be more or less horizontal than in the arrangement illustrated and
may be weighted instead of under the control of a spring. Further, liquid seals
may be used for ensuring that the sewer gas will not escape through the gully trap.
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 combination with a gully trap of one or more self closing flaps substantially
as and for the purpose described.
2. The combination with a gully trap of a frame removable therefrom and one
or more self closing flaps such as D pivotted in the frame substantially as described
and illustrated in the accompanying drawings.
3. The combination with a gully trap of a frame such as C having a ridge plate
such as C³ and one or more pivotted flaps such as D substantially as described and
illustrated in the accompanying drawings.
4. The combination with a gully trap of a self acting disinfecting distributor.
5. The combination with a gully trap and a flap movable therein of a disinfectant-
container so connected to the flap that the discharge of the disinfectant is caused
by the movement of the flap.
6. The combination and arrangement of parts constituting the complete gully
trap substantially as described and illustrated in the accompanying drawings.
Dated this 17th day of February 1896.
FRED. S. SALBERG.
Boult & Wade,
Agents for the Applicant.
FRED. S. SALBERG.
Boult & Wade,
Agents for the Applicant.