Improvements in Grease Traps.
Year: 1891

page_text: Date of Application, 13th Nov., 1891.
Complete Specification Left, 15th Aug., 1892-Accepted, 1st Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Grease Traps.
I, THOMAS ROGERS, of 27, Triangle, Bournemouth, in the County of Hants,
Whitesmith, do hereby declare the nature of this invention to be as follows
--
My invention relates to fat or grease traps, that is to say, to traps which are
provided internally with a receptacle for containing grease or other solid matter
entering the trap. Such traps as hitherto constructed have been difficult to fix and
chiefly for the reason that it is not possible to make a clean joint at the discharge
outlet.
According to my invention I form upon the top of the syphon a hand hole which
normally closed by a cover and which serves to allow the hand to be introduced
for smoothing off the joint with the discharge pipe on the inside and clean out
stoppages in syphon trap and drain I also advantageously construct the trap with
an additional ledge to that upon which the grating rests and I arrange upon the top
edge of the trap a kind of kerb or coping having a lip extending down onto the
ledge.
This arrangement prevents water from leaking between the kerb and the top of
the trap and thus causing unpleasant sinells.
Dated the 13th day of November 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Grease Traps.
I, THOMAS ROGERS, of 27, Triangle, Bournemouth, in the County of Hants,
Whitesmith, 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 fat or grease traps, that is to say, to traps which are
provided internally with a receptacle for containing grease or other solid matter
entering the trap. Such traps as hitherto constructed have been difficult to fix and
chiefly for the reason that it is not possible to make a clean joint at the discharge
outlet.
According to my invention I form upon the top of the syphon a hand hole which
is normally closed by a cover and which serves to allow the hand to be introduced
for smoothing off the joint with the discharge pipe on the inside and also to allow
I also advantageously
of cleaning out stoppages in the syphon trap and drain.
construct the trap with an additional ledge to that upon which the grating rests and
I arrange upon the top edge of the trap a kind of kerb or coping having a lip
extending down onto the ledge.
This arrangement prevents water from leaking between the curb and the top of
the trap and thus causing unpleasant smells.
To enable my invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawing in which :-
Figure 1 is an elevation of a grease trap with my improvements applied thereto.
Figures 2 and 3 are respectively, a plan and a vertical section of the same.
.
a is the body of the trap; 6 the syphon thereof; c the discharge pipe; d the
internal receptacle for containing grease or other solid matter entering the trap;

page_text: e the handle for removing the receptacle d. from the trap; f the grating-and g the
ledge on which the grating rests.
is the hole which I form upon the top of the syphon b, to allow the hand to be
introduced for smoothing off the joint with the discharge pipe c on the inside,
and also to allow of cleaning out stoppages in, the syphon trap and drain; j is the
cover which normally closes the hand hole h.
is the additional ledge which I provide upon the top edge of the body a of the
trap; and is the kerb or coping which I arrange upon the said edge, m indicating
the lip of the kerb or coping extending down onto the ledge k for preventing water
from leaking between the kerb and the top of the trap.
The bars of the grating are made of A-shape in cross section as shewn in
Figure 3 so as to cut the water thrown thereon instead of causing it to splash as is
the case when the bars are made flat on the top.
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. A grease trap having a hand hole formed upon the top of its syphon, the said
hand hole being normally closed by a cover, and a kerb or coping provided with a
lip extending down onto an additional ledge, substantially as and for the purpose
hereinbefore described.
2. The manufacture and use of the improved grease trap hereinbefore described
and illustrated in the accompanying drawing.
Dated this 15th day of August 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.