Heating and Ventilating Grate.
Year: 1895

page_text: Date of Application, 2nd May, 1895-Accepted, 8th June, 1895
Heating and Ventilating Grate.
I, JOHN G. SHELDON, Gentleman, residing at No. 366 Central Avenue, in the
City of Cleveland, State of Ohio, United States of America, 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 improvements in detachable fire-backs, and its objects
are to provide means for utilizing the great heat projected against the back and
end walls of the fire-place for heating other rooms.
My invention consists in the combination and arrangement with a heating
chamber of hot and cold air flues and operating mechanism, with the manner of
construction and details, as hereinafter described, shown in the accompanying
drawings, and more specifically pointed out in the claims.
In the drawings
Fig. 1 is a sectional view in elevation of the fire back and adjacent chimney;
Fig. 2 is a view of the detached heating chamber;
Fig. 3 is a detail of front portion; Figs. 4 and 5 of the side walls;
Fig. 6 is a view of the rear plate; and Fig. 7 of the inner partition or air
distributor.
In these views 1 is the front plate, or inner plate, set at the rear of the grate 2
which rests upon the seat 3 prepared for it. The sides 4 are vertical, opening
outwards to the walls which support the mantel.
A deep hollow 5 is projected rearwardly above the grate to receive the products
of combustion from the grate, and receive the heat where it will affect the chamber
to the greatest advantage, thence it slopes forward, and the open top is closed by
the plate 6 which is provided with a damper 7 through which all smoke issues into
the chimney 8.
This damper is raised by means of the ratchet are 9 engaging the lug 10 at the
side of the opening 10%, and a knob 11 is accessible from within the grate.
In order to complete the heating chamber the side walls 12 are added, provided
with top and front flanges 13 and 14, which fit closely to the sides and top of the
frout plate. The rear edges conform to the curve of the front plate at 15, and are
provided with raised beads 16, in the recess between which are set the edges of the
rear plate 17, all parts fitting closely together; a flange 18 overlaps the side and
front plates at 19 and 20, where projections are formed to secure the necessary
depth to the heating chamber.
Flanges 21 and 22 on the side plates separate the rear chamber from side
chambers 23, so as to prevent the hot air from circulating too freely and compelling
it to issue from the side chambers at the openings 24.
25 is a partition set at the level of the grate and provided with openings 26
for the distribution of the cold air which enters the cold air flue 27 leading to
the outer air.
Vertical partitions 28 separate the back chamber from the side chambers at this
point, but dampers 29 permit the entrance of cold air into the side chambers in such
quantity as may be desired, through openings 36.
A flat plate 30 covers the bottom of the back chamber and side chambers through
which the air flue enters at 31.

page_text: To prevent a cross flow of the currents of air and also to present a greater
beating surface ribs 32 are cast on the rear surface of the front plate.
The bot air flues issue at 33 from the upper part of the rear wall and thence
lead upwards to upper rooms, one being shown entering at 34, the other passing
above to another room. Rods 35 control the dampers to the openings 36 and
a damper 37 opens and closes the opening 31 to the cold air flue.
It will be seen that with this arrangement of partitions the air will be confined
till heated in contact with the hottest portions of the chamber walls, and by
means of the dampers the How of hot or cold air can be easily adjusted to
produce the best effects possible.
The air in the flues in the chimney will also be heated by the products of
combustion passing up the chimney.
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. In a heating and ventilating grate, the combination with a grate of integral
front and side chamber walls enclosing the grate on three sides, the front wall
being provided with a deep recess at the rear of the grate, exterior side walls,
provided with side and top flanges engaging the front and top edges of the side
walls of the front plate, and with flanges on their inner edges enclosing side
chambers when the parts are united, a rear plate conforming in shape to the
curve of the front plate adapted to overlap at top projections on the top edges
of the front and exterior side plates, and provided with flue openings, and a
partition at the grate level separating the front and rear plates, and provided with
openings for cold air distribution, as described.
2. In a fire-back a curved front plate integrally connected with vertical side
plates, and provided with vertical ribs on its rear surface, a rear plate conforming
in shape to the curve of the front plate and provided with openings for hot air
flues, exterior side plates provided with recesses on their rear edges into which
said rear plates extend, and flanges on the exterior plates separating them from
the front and side plates, thus securing rear and side chambers connecting at top,
side and horizontal partitions at the level of the grate provided with openings for
cold air distribution, a top plate provided with a damper for the products of com-
bustion, a floor plate provided with an opening for cold air, and dampers on said
openings and in the said vertical partitions, as set forth.
Dated this 20th day of October 1894.
JOHN G. SHELDON.