IMPROVEMENTS IN GAS PURIFIER GRIDS OR SIEVES
Year: 1879

page_text: LETTERS PATENT to Samuel Cutler, of Millwall, in the County of Middlesex,
for the Invention of "IMPROVEMENTS IN GAS PURIFIER GRIDS OR SIEVES."
Sealed the 8th July 1879, and dated the 13th January 1879.
PROVISIONAL SPECIFICATION left by the said Samuel Cutler at the Office
of the Commissioners of Patents on the 13th January 1879.
SAMUEL CUTLER, of Millwall, in the County of Middlesex.
GAS PURIFIER GRIDS OR SIEVES."
"IMPROVEMENTS IN
This Invention has for its object the making of metal grids or sioves used in gas
purifiers in such a manner as to combino lightness, rigidity, and the maximum space
for the passage of the gas.
The Invention consists in forming a frame of angle iron or other suitable material,
to which are rivetted or otherwise secured at both ends a series of bars of wrought
iron or other metal, and so placed that their wide side is at an acute angle with the
horizon. Thus while the number of bars and the consequent weight of the grids are
reduced to a minimum, a sufficient amount of surface is presented to retain the lime
or other purifying material in its place, and the space for the passage of the gas is
increased to a maximum consistent with the other objects sought to be arrived at by
this Invention. The section of the bars may be similar to flat iron or to angle iron, or
may be corrugated, or fluted, or semicircular. Additional rigidity may be given to
the bars by twisting them at or near the centre, so that the sides of the bar may
incline in opposite directions; the number of twists may be increased as circum-
stances may dictate. The grids may be made of malleable cast iron or of cast iron,
the bars being formed as herein described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Cutler in the Great Seal Patent Office on the 12th July
1879.
SAMUEL CUTLER, of Millwall, in the County of Middlesex.
GAS PURIFIER GRIDS OR SIEVES."
"IMPROVEMENTS IN
This Invention has for its object the making of metal grids or sioves used in gas
purifiers in such a manner as to combine lightness, rigidity, and the maximum space
for the passage of the gas.
The Invention consists in forming a frame of angle iron or other suitable material,
to which are rivetted or otherwise secured at both ends a series of bars of wrought
iron or other metal, and so placed that their wide sido is at an acute angle with the
horizon. Thus while the number of bars and the consequent weight of the grids
are reduced to a minimum, a sufficient amount of surface is presented to retain the
lime or other purifying material in its place, and the space for the passage of the
gas is increased to a maximum consistent with the other objects sought to be arrived
at by this Invention. The section of the bars may be similar to flat iron or to angle
Additional rigidity may
be
iron, or may be corrugated, or fluted, or semicircular.
given to the bars by twisting them at or near the centres, so that the sides of the
bars may incline in opposite directions; the number of twists may be increased as
circumstances may dictate. The grids may be made of malleable cast iron or of
cast iron, the bars being formed as herein described.
In order that the foregoing may be more easily understood Drawings are attached
hereto, of which the following is a description:-Fig. 1 is a plan of the grid, and
shows a number of bars A fixed to the angle-irons B, B, by rivets C, C. The bars
are twisted at D, D, D, to give them rigidity, the girders or bars being made of flat
iron. Fig. 2 is an elevation showing the angle iron in section; Fig. 3 is a plan
of a single bar drawn to the full size, and Fig. 4 is the same in elevation. Similar
letters refer to the same parts in each of the views.
Purifier sieves made in the manner before described are more durable than wood
sieves, especially when lime is used as the purifying material, and from the arrange-
ment of the bars but little resistance is offered by them to the free passage of the
gas, and consequently the greater portion of the purifying material is exposed to
exert its full purifying power.
Having now described and particularly set forth the nature of this Invention,
and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that I do not confine or restrict myself to the precise
details or arrangements that I have described or referred to, as variations may be
made therefrom without deviating from the principles or main features of this
Invention, but what I consider to be novel and original, and therefore claim as
the Invention secured to me by the herein before in part recited Letters Patent
is, the construction of gas purifier sieves, as herein described, and shown on the
Drawings.
In witness whereof, I, the said Samuel Cutler, have hereunto set my hand and
seal, this Eleventh day of July, in the year of our Lord One thousand eight