An Improved Combined Dual Register Soot Door with Manholes and Smoke Pipe Nozzle.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Improved Combined Dual Register Soot Door with Manholes and
Smoke Pipe Nozzle.
I THOMAS HUNGATE PRESTON DENNIS 20 High Street Chelmsford Essex Engineer
Ironmonger and Stove Manufacturer do hereby declare the nature of this invention
to be as follows:-
This Invention is an improvement on my Patent Register Door No. 19731/92
and has for its object the perfect closing of smoke flues or chimneys into which a
stove pipe has to be led and of providing improved means by which the same can
be readily cleaned and swept without disturbing the smoke pipe.
I make a tee iron (by preference) frame of any desired size or shape but usually
rectangular and in length about three times that of its width with two tee iron
bars across it thus dividing the frame into three spaces. Into the centre space
I fit a plate having a nozzle formed on it of suitable size for the reception of a
smoke pipe.
I fasten this plate to the web of the tee iron frame with bolts, screws, or rivets,
using cement around the web of tee iron into which the plate of nozzle fits to
form an air tight joint and when the smoke pipe is passed through the nozzle
the space between it and the smoke pipe is also cemented.
Into the spaces on either side of the plate with smoke pipe nozzle I fit plain
plates which I designate the manholes or register Soot Doors, the outer edges of
these plain plates rest upon the web of the tee iron frame and are cemented on
to it in the same way as the plates of the smoke pipe nozzle. One or more
screwed studs with fly nuts are affixed to these plates. I secure these plates to
the tee iron frame by means of bridges or arched bars (by preference) the ends
of which rest upon the reverse face of tee iron frame, whilst the screwed studs
pass through holes made in the centre of said bridges or arched bars; the fly nuts
are then fitted on to the screwed studs and when screwed up secure the plates to
the web of tee iron and make a tight joint.
The frames and plates may be made of cast or wrought metal. The frame can
be built into the brickwork of a flue or chimney in a vertical or horizontal position.
It will be seen that I thus secure perfectly air tight joints and at the same time
provide ready access to the smoke flue or chimney for cleaning or sweeping
purposes by releasing the nuts of screwed pins or studs which are affixed to the
manhole plates and removing them.
T
1906

page_text: An Improved Combined Dual Register Soot Door with Manholes and
Smoke Pipe Nozzle.
THOMAS HUNGATE PRESTON DENNIS, 20, High Street, Chelmsford, Essex,
Engineer, Ironmonger & Stove Manufacturer, 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 is an improvement on my Patent Register Door No. 19731/92
and has for its object the perfect closing of smoke flues or chimneys, into which
a stove pipe has to be led, and of providing improved means by which the same
can be readily cleaned and swept, without disturbing the smoke pipe or stove.
I make a tee iron (by preference) frame of any desired size or shape, but usually
rectangular, and in length about three times that of its width, with tee iron bars
across it, thus dividing the frame into equal, or irregular, spaces-into one space
I fit a plate having a nozzle formed on it, of suitable size, for the reception of a
smoke pipe, I fasten this plate to the web of the tee iron frame with bolts, screws,
or rivets, using cement around the web of Tee Iron to form an air-tight joint,
and when the smoke pipe is passed through the nozzle, the space between it and
the smoke pipe is also cemented.
Into the other spaces I fit plain plates which I designate the Manholes or register
Soot Doors, the outer edges of these plain plates rest upon the web of the tee iron
frame, and are cemented on to it in the same way as the plate of the smoke pipe
nozzle one or more screw'd studs with fly nuts are affixed to these plates.
I secure these plates to the tee iron frame by means of bridges, or arched bars
(by preference) the ends of which rest upon the reverse face of the Tee iron frame,
whilst the screw'd studs pass through holes made in the centre of the said bridges
or arched bars; the fly nuts are then fitted on to the screwed studs and when
screwed up secure the plates to the web of tee iron, and make a tight joint.
The frames and plates may be made of cast or wrought metal-the frame can
be built into the brickwork of a flue or chimney in a vertical, horizontal, or any
position.
It will be seen that I thus secure perfectly air-tight joints, and at the same time
provide ready access to the smoke flue or chimney for cleaning or sweeping pur-
poses by releasing the nuts of screwed pins or studs which are affixed to the
manhole plates, and removing them.

page_text: nozzle, as either may be fixed and drawn tight to the rebate of the tee iron frame
by screws, bolts, cams, levers, or other well known means.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what I
claim is
The combination of a dual register soot door, with manholes and plates,
plate with smoke pipe nozzle, and the frame as a whole for the object and purpose
hereinbefore described.