Year: 1888

page_text: GEORGE HUMPHREY, 4 Barton Road, Heeley, Sheffield, Manufacturer, do hereby
declare the nature of this invention to be as follows :-
The construction of a metal grate, which, while still retaining the usual apertures
or holes of the ordinary Cellar grate, for the transit of air, light &c., and the
necessary strength, shall be so constituted as to exclude, when required, the transit of
air, light &c., in fact to be an air or draught excluder.
in the carrying out of my invention I make a square or rectangular metal frame
of four sides, (of any size, width or thickness) together with a requisite number of
longitudinal or other shaped bars, and one small central cross-bar, these bars forming
the body. Now from this, it will be understood, there will be an equal number of
longitudinal or other shaped openings. 1 then provide a second, but slightly smaller,
square or rectangular metal frame, this also of any width or thickness, having a
corresponding number of longitudinal or other shaped bars (and necessarily corre
sponding openings) as well as another small central cross-bar, which second frame 1
place immediately beneath the larger frame first named, thus bringing the longitu-
dinal &c. bars, as well as openings, of both frames, directly opposite, and in perfect
line with, each other.
In the central cross-bar of the smaller or second frame, I make, or slot, a small hole
of rectangular or other shape; and in the central cross-bar of the first named frame
I likewise make a small hole, round or square, into which (after allowing it to pass
loosely through the small slot hole of the second frame) I place an iron bolt or pin,
and which pin, by means of screwing or rivetting, I firmly affix to the central cross-
bar of the first named frame, thus having both frames joined to the pin, the first
permanently, the second loosely.
This bolt or pin, which may be made round or square, I construct with a flat ledge
or shoulder, at the end opposite to that which is permanently affixed to the first frame,
and on this ledge or shoulder the second frame is allowed to rest, and, by a small

page_text: iron knob for the hand which I attach for the purpose, may be moved backwards &
forwards, thereby bringing the longitudinal &c. bars of one frame in opposition to
the longitudinal &c. openings of the other frame, and vice versa. Again, at the ledge
-or-shoulder end of the bolt or pin, firmly connect a ring, whereby both frames
may be secured or fastened down, by chain or otherwise, as in the case of the ordinary
Cellar grate.
The grates may also be made circular, with longitudinal or other shaped bars; and
each grate, whether square, rectangular or circular, may be made, if necessary, with
two central cross-bars, two slot-holes, as well as two pins & rings for fastening. They
may be made also with any number, size or shape of bars, or openings; as well as
applied to any existing ordinary cellar grate.
Dated this Tighth day of March 1988
GEORGE HUMPHREY.
GEORGE HUMPHREY, Manufacturer, 4 Barton Road Heeley Sheffield 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 has for its object the construction of a metal grate, which while still
retaining the usual apertures or holes of the ordinary cellar grate for the transit of
air and light, and the necessary strength, shall be so constituted as to exclude, when
required, the passage of air and light, in fact to be an air or draught excluder.
The manner I attain this object is demonstrated on annexed sheet of drawings, on
which figures and reference letters indicate the parts.
Figure 1. is plan of top of rectangular grate frame, shewing longitudinal bars and
openings, and central cross-bar, letter A, in accord with my invention.
Figure 2. shews a slightly smaller rectangular grate frame, designated "second
frame," with similar longitudinal bars and openings, and central cross-bar, B,
illustrated as placed close to the underside of, and closing up the longitudinal openings
of, the frame represented by figure 1, likewise exhibiting the centre bolt or pin, C,
for connecting the two grate frames, as well as its ring or loop, D, for chaining.
Letter E. is the small iron knob, or notch, for the hand, for moving the smaller
or second grate backwards and forwards.

page_text: Letter F.-represents a small swing latch, attached by pin to the central cross-bar
of the second frame, for locking or stopping the backward & forward movement, by
being brought against the centre bolt or pin, letter C, if required.
Letter G. is slot hole, for allowing the backward and forward movement of the
smaller or second grate frame, figure 2, to be effected.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is―.
The improved construction of metal grates for coal and other cellars, substantially
as herein before described and illustrated.
Dated this 3rd day of December 1888