Year: 1896

page_text: Date of Application, 14th Feb., 1896
Complete Specification Left, 13th Nov., 1896-Accepted, 9th Jan., 1897
I, HUGH McGOVERN, of 85 Davis Street, Providence, County of Providence,
State of Rhode Island, United States of America, Machinist, do hereby declare
the nature of this invention to be as follows:-
The nature of my invention consists in a flat grate, divided into sections by-
means of compartments, the sides of which extend downward from the grate,.
whereby the draught may be caused to be less at some portions of the grate than.
at others, with resulting economy of fuel.
Dated this 14th day of February 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
I, HUGH MCGOVERN, of 83 Davis Street, Providence, in the State of Rhode-
Island, United States of America, Machinist, 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 :-
The nature of my invention consists in a grate divided into sections by means
of compartments, the sides of which extend downward from the grate, whereby the
draft may be caused to be less at some portions of the grate than at others,..
with resulting economy of fuel, as hereinafter set forth and claimed.
In the accompanying drawings,
Figure 1 represents a transverse section of a grate formed of single grate-bars
placed side by side.
Fig. 2 represents a central section of a circular grate, taken in the line 22 of
Fig. 3.
Fig. 3 represents a top view of the circular grate.
In the drawings, Fig. 1, a a represents the grate-bars, which are arranged in
sections A A', the grate-bars in the latter being preferably arranged closer
together than in the former. The intermediate grate-bars a' a¹ are provided with
the downward extensions a², which form the sides of the compartiments 6 61, the
compartments & being provided with the inwardly directed inclined wings c c, by
means of which the upward draft therein will be impeded, so that the coal over the
grate-sections A', will not be consumed as rapidly as that over the sections A, in
which the upward draft is free, the gases arising from the heated coal over the
sections A of the grate, and the air which is mingled therewith will by coming in
contact with the flame from the burning coal over the sections A cause rapid
explosions, evolving an intense heat.

page_text: The improvement is shown as applied to a circular grate in Figs. 2 and 3, in
which the sheet-iron pipe d is connected to the annular flange e at the lower side
of the grate, the central bars f, of the grate being preferably arranged closer to
each other than the distance between the outer radially-directed grate bars f¹. The
pipe d is provided interiorily with the inclined wings c c, which serve to check the
upward flow of air through the grate sections A', so that the fire will be hottest at
the outer portion of the grate; but other suitable means may be employed for
checking the draft in the compartment bl.
By my improvement a great saving of coal will be effected in furnaces, the
rising gas and air from the heated coal producing an intense heat in the furnace
and creating a strong draft through the sections A of the grate.
The inwardly-directed wings c c may be dispensed with when the grate-bars in
the sections A are placed sufficiently near each other to properly check the draft ;
but when the grate-bars in the several sections are placed at about the same distance
apart, suitable means should be employed to contract the air-inlet opening under
the said sections A', as by inclining the walls of the compartments under the said
sections, or otherwise.
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 flat grate divided into sections by means of compartments below the grate,
the sides of the compartments extending downward from the under side of the
grate, and serving to increase the draft of air through the alternate sections of the
grate, and means for restricting the flow of air through the intermediate sections,
substantially as described.
2. A flat grate, in which the grate bars in alternate sections are arranged at
a greater distance apart than are those in the intermediate sections, and having
below the grate, compartments, the sides of which extend downwardly, and serve
to increase the draft of air through the sections of the grate the bars of which are
farthest apart, and over which the quick combustion is maintained.
Dated this 13th day of November 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.