CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PIPES OR TUBES TO BE EMPLOYED FOR THE PURPOSES OF HEATING BUILDINGS AND FOR EXTINGUISHING FIRE
Year: 1866

page_text: LETTERS PATENT to Robert Hollingdrake, of Stockport, in the County.of
Chester, Ironfounder, for the Invention of "CERTAIN IMPROVEMENTS
IN THE CONSTRUCTION OF METALLIC PIPES OR TUBES TO BE EMPLOYED FOR
THE PURPOSES OF HEATING BUILDINGS AND FOR EXTINGUISHING FIRE
Sealed the 16th April 1867, and dated the 23rd October 1866.
PROVISIONAL SPECIFICATION left by the said Robert Hollingdrake at
the Office of the Commissioners of Patents, with his Petition, on the
23rd October 1866.
I, ROBERT HOLLINGDRAKE, of Stockport, in the County of Chester, Iron-
founder, do hereby declare the nature of the said Invention for "CERTAIN
IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PIPES OR TUBES TO BE EMPLOYED
FOR THE PURPOSES OF HEATING BUILDINGS AND FOR EXTINGUISHING FIRE THEREIN,"
to be as follows:-
My Invention relates to a novel construction of such pipes or tubes as are
employed for heating rooms or buildings by steam, and is designed to obtain
sufficient heat with an economy of steam, and also to render such pipes avali-
able for the extinguishing of fires occurring in the rooms...

page_text: The improvements consist in dividing the pipes longitudinally down the
centre of their length by means of a "nid-feather" or division plate, so that
the upper half of the pipe only contains steam which is sufficient to impart
heat to the entire surface of the pipe; the lower half is perforated with.
apertures, and this half is in connection with a stean chest or boiler, and the
connection is closed by a tap or valve, so that when fire occurs this valve
is opened and steam is admitted into the room, and the fire is thereby ex-
tinguished.
SPECIFICATION in pursuance of, the conditions of the Letters Patent, filed
by the said Robert Hollingdrake in the Great Seal Patent Office on
the 22nd April 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
HOLLINGDRAKE, of Stockport, in the County of Chester, Ironfounder, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of October, in the year of our Lord
One thousand eight hundred and sixty-six, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Robert Hollingdrake, Herspecial license that I, the said Robert Hollingdrake,
my executors, administrators, and assigns, or such others as. I, the said
Robert Hollingdrake, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the ChannelIslands, and Isle of Man, an Invention for "CERTAIN
IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PIPES OR TUBES TO BE EMPLOYED
FOR THE PURPOSES OF HEATING BUILDINGS AND FOR EXTINGUISHING FIRES THEREIN,"
upon the condition (amongst others) that I, the said Robert Hollingdrake, my
executors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Robert Hollingdrake, do hereby
declare the nature of the said Invention, and in what manner the same is

page_text: to be performed, to be particularly described and ascertained in and by the
following statement and accompanying Drawings (that is to say) :-
My Invention relates to a novel construction of such pipes or tubes as are
employed for heating rooms or buildings by steam, and is designed to obtain
sufficient heat with an economy of steam, and also to render such pipes
available for the extinguishing of fires occurring in the rooms.
The improvements consist in dividing the pipes longitudinally down their
length by means of a " mid-feather" or division plate, so that the upper part
of the pipe only contains steam or heated air which is sufficient to impart
heat to the entire surface of the pipe. The lower part is perforated with
apertures, and this part is in connection with a steam chest or boiler, and the
connection is closed by a tap or valve, so that when fire occurs this valve
is opened, and steam is admitted into the room, and the fire is thereby
extinguished.
In order that the Invention may be better understood, and explained in
detail, I have hereunto attached a Sheet of Drawings made upon a scale of
about three inches to the foot.
Fig. 1 represents a side view, shewn in prospective of the divided and per-
forated pipe or tube, which may be of any suitable diameter; Fig.2 represents
a longitudinal section of the same; and Fig. 3 an end view:
In Figs. 1, 2, and 3, a, a, is the pipe, which is divided at or about the
middle of its diameter into two parts by the mid-feather or plate b, the upper
part of the pipe being constantly filled with steam, air, or water for heating
purposes, and the lower part is perforated, as shewn, and remains empty until
necessity requires the emission of steam, which can be supplied to the lower
part by opening a valve in the steam pipe connected to the lower part of the
pipe,and which issues from the perforations; the advantages of heating pipes
so constructed being that the same amount of heating surface is obtained
with a minimum amount of steam or water, as the whole pipe is heated by
the contact of the steam or water in the upper part; and at the same time
steam may be made to fill a room by issuing from the perforations of the
lower part for extinguishing fires; or, if required, the pipes thus divided may
be used to convey flow and return water in heating buildings, or for exhaust
steam and feed water, so as to heat the water before entering the boiler by
passing through the divided pipe in which instances the perforations are
dispenseu with.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim the use and application of a mid-feather or partition

page_text: for dividing heating pipes or tubes into two parts longitudinally, and, where
required, perforating the lower part for the emission of steam so as to com-
bine a heating surface. with a steam emitting surface for use in mills,
works, and other situations where such pipes are or may be employed, as
herein-before described, set forth, and fully illustrated in the Drawings
attached.
In witness whereof, I, the said Robert Hollingdrake, have hereunto
set my hand and seal, this Eighteenth day of April, in the year of our
Lord One thousand eight hundred and sixty-seven.
works, and other situations where such pipes are or may be employed, as
herein-before described, set forth, and fully illustrated in the Drawings
attached.
In witness whereof, I, the said Robert Hollingdrake, have hereunto
set my hand and seal, this Eighteenth day of April, in the year of our
Lord One thousand eight hundred and sixty-seven.
Witnessed by
JNO. L. DAVIES, C.E.,
Office for Patents,
Manchester.
ROBERT HOLLINGDRAKE. (L.S.)