Improvements in Hurdles or Grids for Gas Purifiers, and Cooling, Drying, and Graduating Apparatus.
Year: 1897

page_text: Improvements in Hurdles or Grids for Gas Purifiers, and Cooling,
Drying, and Graduating Apparatus.
I, GOTTFRIED ZSCHOCKE, of Kaiserslautern, Germany, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved construction of hurdles or grids for gas
purifiers or scrubbers or for containing the materials to be acted upon in graduating
cooling and drying apparatus.
I construct such hurdles or grids of a number of flat bars placed on edge, the
upper and lower edges of which are rounded and which are tapered in thickness
from the upper to the lower edge, the latter being formed with serrations so as to
produce flat blunt points which are arranged so as to be out of line in the
contiguous bars.
On the upper edge a number of recesses or notches are formed, in which liquid
poured over the hurdles or grid can be retained. In order to increase the surfaces
of the bars; the vertical sides thereof may be made with ribs or flutings, or borings
may extend partially down through the bar from the recesses or notches in the top
edge, and these borings may be extended laterally at bottom so as to open at the
sides of the bars.
The bars constructed as above are connected together side by side with narrow
spaces intervening, for which purpose dise shaped distance pieces may be inserted
between them, these as also the bars being conveniently provided with holes through
which is passed a transverse supporting bar.
Any number of such hurdles or grids may be arranged side by side or one above
the other, and when applied to gas scrubbers, water is made to trickle on to the
top surface of the hurdle, whence it flows down over the side surfaces, portions
remaining in the cavities or notches at top, and in the borings and lateral holes,
and in penetrating into the pores of the bars it keeps these always moist, or it
flows slowly through the side openings of the borings and is distributed to the flat
rounded points of the bottom edge whence the water drops on to the next hurdle
or grid below. By this means the entire system of hurdles will be effectually
irrigated during a long time by means of a minimum quantity of water, which
is of particular importance with scrubbers because the water thereby becomes
very rich in ammonia. For this reason it is of advantage to use for the bars a
very porous material, such as wood, papier maché, pumice stone, &c., with which
the uniform distribution of the water is facilitated by the absorption thereof.
In cooling apparatus, the liquid to be cooled flows downwards while air is passed
upward from below, and by the greatly increased surfaces of the hurdles the cooling
is considerably accelerated.
With graduating apparatus the same action takes place.
With drying apparatus the hot air. rises upwards and is very uniformly
distributed over the entire hurdle by means of the serrations of the lower edges of

page_text: the bars, so that the materials to be dried when placed upon the hurdles are very
uniformly acted upon by the warm air.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Hurdles or Grids for Gas гитцего, ани
Drying, and Graduating Apparatus.
I, GOTTFRIED ZSCHOCKE, of Kaiserslautern, Germany, Manufacturer, 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:
-
This invention relates to an improved construction of hurdles or grids for gas
purifiers or scrubbers or for containing the materials to be acted upon in
graduating, cooling and drying apparatus.
I construct such hurdles or grids as I shall describe referring to the accompanying
drawings.
Fig. 1 is a part end elevation part section of the end part of a hurdle or grid
according to this invention.
Fig. 2 is a plan and Fig. 3 is a side view.
Each grid or hurdle consists of a number of flat bars 1 placed on edge, the upper
and lower edges of which are rounded and which are tapered in thickness from the
upper to the lower edge, the latter being formed with serrations 2 so as to produce
flat blunt points which are arranged so as to be out of line in the contiguous bars.
On the upper edge a number of recesses or notches are formed, in which liquid
poured over the hurdles or grid can be retained. In order to increase the surfaces
of the bars, the vertical sides thereof may be made with ribs or flutings as indicated
in Fig. 4 or borings 4 may extend partially down through the bar from the recesses
or notches in the top edge, and these borings may be extended laterally at their
bottoms with openings 5 at the sides of the bars.
The bars constructed as above are connected together side by side with narrow
spaces intervening, for which purpose disc shaped distance pieces 6 may be inserted
between them, these as also the bars being conveniently provided with holes through
which is passed a transverse supporting bar 7.
Any number of such hurdles or grids may be arranged side by side or one above
the other, and when applied to gas scrubbers, water is made to trickle on to the
top surface of the hurdle, whence it flows down over the side surfaces, portions
remaining in the cavities or notches at the top, and in the borings and lateral holes
and in penetrating into the pores of the bars it keeps these always moist, or it
flows slowly through the side openings of the borings and is distributed to the
flat rounded points of the bottom edge whence the water drops on to the next
hurdle or grid below. By this means the entire system of hurdles will be effec-
tually irrigated during a long time by means of a minimum quantity of water,
which is of particular importance with scrubbers because the water thereby
becomes very rich in ammonia. For this reason it is of advantage to use for the
bars a very porous material, such as wood, papier mache, pumice stone &c., with
which the uniform distribution of the water is facilitated by the absorption
thereof.
In cooling apparatus the liquid to be cooled flows downwards while air is passed

page_text: upward from below, and by the greatly increased surfaces of the hurdles the
cooling is considerably accelerated.
With graduating apparatus the same action takes place.
With drying apparatus the hot air rises upwards and is very uniformly dis-
tributed over the entire hurdle by means of the serrations of the lower edges of the
bars, so that the materials to be dried when placed upon the hurdles are very
uniformly acted upon by the warm air.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is:-
1. A hurdle or grid for gas purifiers and cooling, drying and graduating appar-
atus, consisting of parallel bars preferably tapering in thickness towards their
lower parts, rounded at their edges, and having their lower edges made with
flattened serrations, and their upper edges made with notches or recesses.
2. In the grids or hurdles above referred to, holes bored partially through the
bars, as described.
3. For grids or hurdles such as above referred to, bars made with their sides
longitudinally ribbed or fluted as described.
Dated this 7th day of September 1897
ABEL & IMRAY,
Agents for the Applicant.