Improvements in Apparatus to be used in the Purification of Coal Gas or for analogous Operations.
Year: 1894

page_text: Date of Application, 25th Jan., 1894
Complete Specification Left, 25th Oct., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus to be used in the Purification of Coal
Gas or for analogous Operations.
I CHARLES CLEMENT WALKER of Midland Iron Works Donnington near
Newport in the County of Salop Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to apparatus to be used in the purification of coal gas or
for analogous operations wherein dipping devices at either end of a rocking beam
are alternately lowered into and raised from liquid such as the apparatus described
in the Specifications of Letters Patent No. 1478 dated the 10th day of April 1880
and No. 1492 dated the 17th day of October 1888. In working such apparatus
although when the beam is horizontal and the dipping devices at each end of the
beam are submerged in the liquid to an equal extent the weight at each end of the
beam are equal when the dipping devices at one end of the beam are submerged in
the liquid and the dipping devices at the other end of the beam are raised from the
liquid or the one device is more deeply submerged than the other the difference in
resultant weight owing to the buoyant effect of the liquid on the submerged devices
causes the engine driving the machine to have an unequal load to overcome during
each stroke of the beam of the machine. According to my invention I provide
means to compensate for this difference in weight and therefore to cause the engine
to have practically an equal load to overcome during each stroke of the said beam.
This effect by providing the machine with a weight which is moved over
alternately to one side and the other as the beam oscillates so as to counteract the
difference due to loss of weight by the buoyancy of the submerged or more deeply
submerged devices as they are alternately lowered into the liquid.
The following is a convenient arrangement according to my invention but I do
not limit myself to this precise arrangement. To the mid part of the beam I affix
a toothed sector and engaging with this is a pinion whose axis is mounted in a
bearing in the framing and secured to this axis is an arm carrying a weight
sufficient to exert a leverage on the beam equal or about equal to the difference in
weight aforesaid.
When the beam is in its horizontal position the arm and weight are in a vertical
position and consequently the weight does not preponderate on either side but as
the ends of the beam are alternately lowered and raised the sector rotates the pinion
and moves the weight alternately over to the one and the other side so as to
compensate for the difference in weight due to buoyancy as the dipping devices at
either end of the beam are alternately raised from and lowered into the liquid.
Dated this 25th day of January 1894.
JOHNSONS & WILLCOX,
47, Lincolns Iun Fields, London, W.C., Agents.

page_text: Improvements in Apparatus to be used in the Purification of Coal
Gas or for analogous Operations.
I, CHARLES CLEMENT WALKER of Midland Iron Works Donnington, near
Newport in the County of Salop, Engineer 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 apparatus to be used in the purification of coal gas or for
analogous operations wherein dipping devices at either end of a rocking beam are
alternately lowered into and raised from liquid such as the apparatus described in
the Specifications of Letters Patent No. 1478 dated the 10th day of April 1880
and No. 14925 dated the 17th day of October 1888. In working such apparatus
although when the beam is horizontal and the dipping devices at each end of the
beam are submerged in the liquid to an equal extent the weight at each end of the
beam are equal, when the dipping devices at one end of the beam are submerged in
the liquid and the dipping devices at the other end of the beam are raised from
the liquid or the one device is more deeply submerged than the other, the difference
in resultant weight owing to the buoyant effect of the liquid on the submerged
devices causes the engine driving the machine to have an unequal load to overcome
during each stroke of the beam of the machine. According to my invention I
provide means to compensate for this difference in weight and therefore to cause the
engine to have practically an equal load to overcome during each stroke of the said
beam. This I effect by providing the machine with a weight which is moved over
alternately to one side and the other as the beam oscillates so as to counteract the
difference due to loss of weight by the buoyancy of the submerged or more deeply
submerged devices as they are alternately lowered into the liquid.
I will describe with reference to the accompanying drawing a convenient arrange-
ment for carrying out my invention but I do not limit myself to this precise
arrangement.
Figure 1 represents in elevation so much of an apparatus of the kind hereinbefore
referred to as is necessary to illustrate my invention the rocking beam being shown
in a horizontal position. Figure 2 is a similar view shewing the beam inclined in
one direction to its full extent and Figure 3 shews the beam inclined to its full
extent in the opposite direction.
A is the rocking beam pivotted at a to standards B on the top of the tank C,
containing the purifying liquid to the opposite ends of which beam dipping devices
are connected by rods D. To the mid part of the beam A. I affix a toothed sector E
and engaging with this sector is a pinion F whose axis f is mounted in
bearings in the standards B. Secured to the axis is an arm G carrying a
weight H sufficient to exert a leverage on the beam equal or about equal to the
difference in weight owing to the buoyancy when submerged of the dipping devices
. carried by the lever as aforesaid.
The rocking beam may be operated from a motive power engine by any suitable
means for example as shewn in the drawing one end of the beam A is connected by
a rod d to a crank e on a shaft g on which shaft is keyed a worm wheel h gearing
with a worm i on another shaft K which may be driven by gearing / direct or
otherwise from the engine and thereby impart to the beam the desired rocking
movement.
When the beam is in its horizontal position as shewn in Figure 1 the arm G and
weight H are in a vertical position and consequently the weight does not prepon-
derate on either side of the fulcrum a of the beam but as the ends of the beam are
alternately lowered and raised the sector E rotates the pinion F and moves the
weight H alternately over to the one and then to the other side of the fulcrum a as

page_text: shown respectively in Figures 2 and 3 so as to compensate for the difference in
weight due to buoyancy as the dipping devices at either end of the beam are
alternately raised from and lowered into the liquid.
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 apparatus of the kind herein referred to for use in the purification of coal
gas or analogous operations, the combination with the rocking beam carrying at its
opposite ends dipping devices, of a weight which is moved over alternately to one
side and then the other side of the fulcrum of the beam as the beam oscillates
substantially as and for the purpose hereinbefore described.
2. In apparatus of the kind herein referred to a toothed sector on the rocking
beam engaging with a pinion the axis of which is provided with an arm carrying a
weight which is caused to move with the movements of the rocking beam alternately
to one side and then the other side of the fulcrum of the rocking beam so as to
counteract the differences due to the loss of weight by the buoyancy of the
submerged dipping device or of the more deeply submerged dipping device as the
said dipping devices are alternately lowered into the liquid substantially as herein-
before described.
Dated this 25th day of October 1894.
JOHNSONS & WILLCOX,
Agents.