Improvements in Apparatus for Generating Acetylene Gas.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Generating Acetylene Gas.
We, Boo HENNING WALLIN, of Chalmerska Institutet, and BARON RICHARD DE
WENDEL, of Kungsportsavenyan 2 B, both of Gothenburg, Sweden, Engineers,
do hereby declare the nature of this invention to be as follows:-
-
This invention relates to apparatus for generating acetylene gas, into which
apparatus the carbide, preferably divided in certain quantities is fed automatically.
In the accompanying drawings Fig. 1 shows a side view and Fig. 2 a top view
of the generator. Figs. 3 and 4 show details. Figs. 5 and 6 show a side view
and a top view respectively of a modification of the apparatus, and Figs. 7 and 8
show modifications of this latter apparatus.
The carbide is contained in cylindrical shells or wrappers 1, forming cartridges,
or in metal sheet frames open on both sides and at their ends provided with
oblong pivots, or in compartments arranged successively, or in flexible chute,
filled with the carbide, or, finally in any other receiver, containing the carbide
within certain space. The cartridges or pockets may be placed in a spiral
shaped magazine 2. The shaft of this magazine is carried by a lever 17 which
at its one end is pivotally mounted on a shaft, journalled in a bearing on the
frame of the apparatus, while the other end of said lever being provided with a
handle rests on the frame. The magazine or receiver of the carbide consists
of a ribbon 3, which in the generator shown on the drawing is imagined to have
a length of 10 meters and a width of 6 centimeters and which is fastened to a
hub on shaft 4 of the magazine, the ribbon being unwound gradually during
the operation of the generator and wound upon a roller on the shaft round which
the lever can be swung.
As the ribbon is wound upon the roller the cartridges
are pushed sideways downwards into a tube or chute 6, opening into the generat-
ing compartment and having a rectangular or other suitable cross section, the
tube or chute 6 being provided with an articulation so as to be able to yield as
the diameter of the ribbon roller increases see the circle in dotted lines which
At a
represents said roller, the entire ribbon being wound upon the same.
certain point in this chute the cartridges are stopped by fluted wheels or rollers
(star wheels) 7 of which two, three or more are situated on each side of the chute
and which enters the chute on two opposite sides. The shaft 8 of these star wheels
carry two toothed wheels 9 of the same diameter and engaging in one another.
In the one of the wheels 9 engages a smaller pinion 10 the toothed wheels and the
pinion being shown by dotted lines, the shaft of which as well as those of the
wheels is journalled in a small frame. The pressure on the cartridges is obtained
by the pull which is exerted by a gear and a weight 11 and which can be
accurately regulated by said gear and weight. The weight is suspended on a rope
which at the charging of the magazine with cartridges is wound upon a roller
whereby the weight is elevated.
The gas holder bell 12 is located below the magazine and the guide rod 13 of
the same has steel points 14. When the bell of the gas holder descends in conse-
quence of the consumption of the gas, these points pass double pawls 15 acting

page_text: on a ratchet or cam disc 16 provided with for instance, two teeth or cams and
mounted on the same shaft as the above mentioned pinion. When a steel point
passes the upmost pawl or both pawls this is or these are brought out of engage-
ment with the disc 16 thus permitting the pinion 10 to turn so that the star
wheels cause a cartridge to fall down. During the upward movement of the beli
the point passes the pawl or pawls which first yield and then fall down to their
normal positions. At the next descent of the bell the pawl or pawls are again
brought out of engagement with the ratchet or cam disc, whereby the next
cartridge is fed down and so on.
When the magazine is to be provided with cartridges, the lever 17 supporting
the magazine is reversed by lifting its handle and carrying the same past its
vertical position to a horizontal position, the lever being now directed towards
the right side. In order that the tension on the ribbon may be maintained, a
pawl 19 at the lifting of the lever engages into a ratchet wheel 20 on the shaft
of the magazine, so that a sudden winding off of the ribbon and a consequent
falling out of the cartridges is prevented. The pawl is out of engagement with
the wheel 20, when the magazine is in action, because a roller on an extension of
the pawl in this position of the magazine is pressed upwards by a bar 21 fixed
to the frame and parallel to the lever 17.
The construction of the generator is so clearly illustrated on the drawings,
that a detailed description of the same should not be necessary. The semi-
circular vessels 22 and 23, which consist of sheet metal, can be rotated round a
vertical shaft, thus permitting a removal of the lime even during the full opera-
tion of the generator. The vessel on the right hand is lifted by a special handle.
The handle of the cutting off cock of the gas catch 41 has such a shape, that the
cock will be shut off at the ascent of the said catch, this shutting off being neces-
sary however only now and then when the generator is cleansed. Floating
cartridge shells are prevented by false bottoms consisting of wire nets from
moving from the vessels into the surrounding water cistern. When the handle
of the main cock is in the position, shown in the drawing, the cock is shut,
but simultaneously there is a narrow out let for the gas through a pipe conduit
(shown on the left side of the cock) leading to the atmosphere from the apparatus.
If the inlet to the generating chamber be closed, the gas ascends into the gas
catch 41 and from this to the atmosphere through the above mentioned pipe
conduit, whereafter the bell descends and the operation of the apparatus which
is empty of gas is interrupted.
Hitherto the acetylene gas has generally been dried by means of chloride of
calcium. The disadvantage of this method of drying is, that the water absorbed
by the chloride must be expelled by heating at each renewed charging of the
drier, this heating causing labour as well as expense for the fuel. In automatic
gas generators, which produce the gas periodically or continually in the same
degree as it is consumed and in which the bell of the gas holder may be small,
the drying of the gas is of relatively great importance, as the gas is consumed
almost as soon as it is generated, so that there is no time for the moisture to
settle from it. It has therefore proved practical to use calcium carbide in pieces
for drying the gas. The advantages of doing this are evident. Partly the
carbide is always at hand in acetylene generators, partly it has a very great
drying effect on the gas, passing along the same, almost as great as the effect of
chloride of calcium, and partly (which is the circumstance especially worthy of
being noticed), the product generated in consequence of the absorption of the
moisture is acetylene, so that the acetylene gas, passing along the carbide, is
increased with a quantity of the same gas, proportional to the quantity of
moisture by these reasons the carbide must be considered as the most perfect
means of drying acetylene gas. For the purpose in question it is suitable to
use a so called four way cock, provided with a special lateral boring, which
opens into a narrow pipe leading through the atmosphere, so that when the cock
is turned at the charging of the drier, the gas runs to the atmosphere or to a

page_text: burner, in consequence of which it has no additional pressure within the drier,
when the door is opened for the introduction of fresh carbide. Among the four
ways of the cock one leads from the gas generator, the opposite one from the
drier, another from the bell, while that, opposite to the latter leads to the dryer.
If sheet metal frames of the above mentioned construction, that it to say boxes
without cover and bottom are employed for feeding the calcium carbide into the
generator, the frames or boxes are mounted in the spiral ribbon in such a manner
that said ribbon closes their open sides, as shown in Fig. 3. The pivots 25 of
the frames 24 slide, when the magazine is in operation, along two guides 26 and
move two toothed wheels 27 (Fig. 4). The teeth of these wheels 27 enter between
the pivots of the frames. The frames continue their movement and fall down
into the vessel 22. The carbide may also be in pieces in the frames, or it may
be enclosed in paper wrappers, having a form of a parallelopiped or other suitable
form.
Several details of the apparatus may be modified and such modified details are
shown in Figs. 5, 6, 7 and 8 respectively. Figs. 5 and 6 show a side view and a
top view respectively of a modification of the apparatus and of devices connected
thereto, while Fig. 7 shows a front view of a feed chute substituted for the above
described magazine for carbide cartridges or the like, said magazine consisting
chiefly of a spirally bent ribbon. Fig. 8 shows a modified ratchet arrangement.
As it has proved somewhat difficult to place the different parts of the feeding
device in such a manner that they do not prevent the ascension of the bell, we
bave considered it suitable to provide a special arrangement so as to make the
devices, controlling the feeding of the carbide, independent of the height of the
bell. The modified feeding device is very suitable in this respect. In this
modified device the pawls are two in number, as in the device described above,
but contrarily to the latter they are mounted upon the same shaft and have such
a position, that the one is in engagement with the ratchet wheel, when the other
is out of engagement with the same (see Figs. 5 and 8). The guide rod of the
bell of the above described device, which rod acts directly upon the pawls, is in
this case substituted by a rod 29, surrounded by a tube 28 and provided with
points 30, extending through a vertical slot in the tube. The rod 29 is at its
upper end connected to a chain running over grooved discs and fixed to the top
of the gas holder bell. The feeding device consists as before of star shaped
wheels 31 and the spaces between the ridges of said wheels always meet at the
rotation of the wheels and correspond when together to the shape of the carbide
The shaft
cartridge or other carbide wrapper which may be round, square etc.
of the one wheel carries the ratchet wheel 32 which is actuated by the hooks of
the pawl 33 which is so adjusted, that it is alternately acted upon by the points 30,
the hooks being there by alternately engaged with or disengaged from the teeth
of the wheel 32 (as indicated above). The cartridges (if such are used) are fed
from a rectangular chute (see the drawing) provided with sheet metal doors of
a suitable size, said doors being for instance, movable on hinges and closed by
means of hooks. The chute is provided below with a hook 34 acting automatically.
At the operation of the apparatus this hook is kept out of the chute, which con-
sequently is open, but when the chute is to be filled with carbide cartridges or
other wrappers containing carbide, the chute forming the magazine is removed,
the hook moves under the inferior end of the same and the chute is brought to
a horizontal position, for instance on a table for being charged. It is evident,
that the hook which for instance may be acted upon by a spring has for its
purpose to prevent the cartridges from falling out of the chute. When the
chute has been brought in place and the hook pulled out of the same, the
carbide cartridges (or the like) contained in it fall down upon the cartridges in
a stationary chute piece. In large acetylene generators the chute would become
so high that the height of the chamber in which the generator is placed would not
suffice. For this reason several chutes are employed, arranged side by side each
In this case such
chute being placed somewhat higher up than the next one.

page_text: an arrangement is provided that the consequence of action of for instance, five
chutes is 1, 2, 3, 4, 5, 1, 2, 3 etc.
The device adapted for taking up the lime formed by the carbide at the pro-
duction of the gas consists of a vessel 35, arranged in direct communication with
carbide feeder. The vessel 35 is in the present case supported on the upper
edges of a cistern 38 by means of rods 36 on the sides of the same and by means
of hooks 37 arranged on the rods 36. The cistern 38 may be provided with
handle 39 and a cover 40. In order that no interruption of the operation of the
apparatus may take place there may be two vessels 35 for each apparatus. When
the one is used, the other is empty and ready to replace the first mentioned one.
The removal of the vessels 35, the upper parts of which are surrounded by a gas
catch 41, is carried out by lifting the handles on the rods 36 so as to make the
hooks 37 free from the edges of the cistern 38 and by then moving the vessel 35
along one side of said cistern, which side may preferably be oblique after the
vessel has been moved below the lower edge of the gas catch. The inlet for the
carbide cartridges or packets has an oblique position, but it is for the rest of the
same construction as in the apparatus described above. In the operation the
carbide cartridges or packets fall down partly in consequence of their own weight
and partly under the influence of a disc for a weighted rope and a winding
device with a ratchet wheel (not shown in the drawing). This latter arrange-
ment is however not required in all apparatus.
For making the function of the apparatus more sure, two gas bells, the gas
pressures within which are different, may be used. The feeding devices which
in this instance preferably are two in number, one for each bell, are placed the
two bells and work independently of one another, but they deliver the carbide
packets to a common inlet. This cross section of the bells for instance, need
only be half as great as in the construction described. The operation of the
apparatus will be as follows. At the beginning of the generation of the gas
the light gas bell rises and soon reaches its upper position. Then the heavy
bell begins to rise and soon reaches its upper position, whereafter this bell
delivers its contents to the conduit leading to the burners. If by any reason
the feeding device of the latter bell should be disturbed the light bell and the
feeding device of the same cause a continued function of the apparatus.
Dated this 22nd day of September 1898.
HERBERT HADDAN & Co.,
Agents for the Applicant,
18, Buckingham Street, Strand, W.C.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Generating Acetylene Gas.
We, Boo HENNING WALLIN, of Chalmerska Institutet, and BARON RICHARD DE
WENDEL, of Kungsportsavenyan 2B, both of Gothenburg, Sweden, Engineers,
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 apparatus for generating acetylene gas, into which
apparatus the carbide, preferably divided in certain quantities is fed automatically.
In the accompanying drawings Fig. 1 shows a side view and Fig. 2 a top
view of the generator. Figs. 3, 4, and 5 show details. Figs. 6 and 7 show
a side view and a top view respectively of a modification of the apparatus, and
Figs. 8 and 9 show details of this latter apparatus.
The carbide is contained in cylindrical shells or wrappers 1, forming cart-

page_text: ridges, or in metal sheet frames open on both sides and at their ends provided
with oblong pivots, or in compartments arranged successively, or in removeable
chutes, or in any other suitable receivers containing the carbide within certain
space. The cartridges or packets may be placed in a spiral shaped magazine 2.
The shaft 4 of this magazine is carried by a lever 17 which at its one end is
pivotally mounted on a shaft, journalled in a bearing on the frame of the
apparatus, while the other end of said lever provided with a handle rests on the
frame. The magazine or receiver of the carbide consists of a band or ribbon 3,
which in the generator shown on the drawing is taken to have a length of
10 meters and a width of 6 centimeters and which is fastened to a hub on shaft 4
of the magazine, the ribbon being unwound gradually during the operation
of the generator and wound upon a roller 48 on the shaft round which the lever
can be swung. As the ribbon is wound upon a roller the cartridges are moved
downwards into a tube or chute 6, opening into the generating compartment and
having a rectangular or other suitable cross section the tube or chute 6 being
provided with an articulation 44 so as to be able to yield as the diameter of the
ribbon roller increases, see the circle in dotted lines which represents said roller,
the entire ribbon being wound upon the same. At a certain point in this chute
the cartridges are stopped by fluted wheels or rollers (star wheels) 7 of which
iwo, or more are situated at the same lever on each side of the chute and
which enter the chute on two opposite sides. The shaft 8 of these star wheels
carry two toothed wheels 9 of the same diameter and engaging in one another.
In the one of the wheels 9 a smaller pinion 10 engages, the toothed wheels and
the pinion being shown by dotted lines, the shaft of which as well as those of
the wheels being journalled in a small frame. The pressure on the cartridges
and the unwinding of the ribbon is obtained by the pull which is exerted by
a gear 47 and weight 11 or other suitable means and which can be accurately
regulated by said gear and weight which can be diminished or augmented.
The weight is suspended on a rope 45 which at the charging of the magazine with
cartridges is wound upon a roller 46 whereby the weight is elevated.
The gas holder bell 12 is located below the magazine and the guide rod 13
of the same has steel points 14.
When the bell of the gas holder descends in consequence of the consumption
of gas, these points pass double pawls 15 acting on a ratchet or cam disc 16
provided with, for instance, two teeth or cams and mounted on the same shaft
as the above mentioned pinion. When a steel point passes the upmost pawl or
both pawls this is, or these are, brought out of engagement with the disc 16
thus permitting the pinion 10 to turn so that the star wheels cause a cartridge
to fall down. During the upward movement of the bell the point passes the
pawl or pawls which first yield and then fall down to their normal positions.
At the next descent of the bell the pawl or pawls are again brought out of engage-
ment with the ratchet or cam disc, whereby the next cartridge is fed down and
so on.
When the magazine is to be provided with cartridges the lever 17 supporting
the magazine is reversed by lifting its handle and carrying the same past its
vertical position to a horizontal position, the lever being now directed towards
the right side. In order that the tension on the ribbon may be maintained, a
pawl 19 at the lifting of the lever engages into a ratchet wheel 20 on the shaft
of the magazine, so that a sudden winding off of the ribbon and a consequent
falling out of the cartridges is prevented.
The pawl is out of engagement with the wheel 20, when the magazine is in
action, because a roller on an extension of the pawl in this position of the
magazine is pressed upwards by a bar 21 fixed to the frame and parallel to the
lever 17.
The construction of the generator is so clearly illustrated on the drawings,
that a detailed description of the same should not be necessary. The semi-
circular vessels 22 and 23 which consist of sheet metal, can be rotated round a

page_text: vertical shaft, thus permitting a removal of the lime even during the full operation
of the generator. The vessel on the right hand is lifted by a handle. The
handle of the cutting off cock of the gas catch 41 has such a shape, that the cock
will be shut off at the ascent of the said catch, this shutting off being necessary
however only now and then when the generator is cleansed. Floating cartridge
shells are prevented by false bottoms consisting of wire nets from moving from
the vessels into the surrounding water cistern. When the handle 53 of the main
cock is in the position, shown in the drawing, the cock is shut, but simultane-
ously there is a narrow outlet for the gas through a pipe 56 (shown on the left
side of the cock) leading to the atmosphere from the apparatus. If the outlet from
the generating chamber be clogged, the gas ascends into the gas catch 41 lying
in water and from this to the atmosphere through the above mentioned pipe 56.
If sheet metal frames of the above mentioned construction, that is to say, boxes
without cover and bottom Fig. 5 are employed for feeding the calcium carbide
into the generator, the frames or boxes are mounted in the spiral ribbon in such
a manner that said ribbon closes their open sides, as shown in Fig. 4. The
pivots 25 of the frames 24 slide, when the magazine is in operation along two
guides 58 of a piece 61 and move two toothed wheels 27 (Fig. 4).
The teeth of these wheels 27 enter between the pivots of the frames. The
carbide charge drops into the chute 59 after the roller has been passed and the
frames continue their movement and fall down into the vessel 60. The carbide
may also be in pieces in the frames, or it may be enclosed in paper wrappers,
having a form of a parallelopiped or other suitable form.
Several details of the apparatus may be modified and such modified details aro
shown in Figs. 6, 7, 8 and 9 respectively. Figs. 6 and 7 show a side view and a
top view respectively of a modification of the apparatus and of devices con-
nected thereto, while Fig. 8 shows a front view of a feed chute substituted for
the above described magazine for carbide cartridges or the like, said magazine
consisting chiefly of a spirally bent ribbon.
Fig. 9 shows a modified ratchet arrangement. As it has proved somewhat
difficult to place the different parts of the feeding device in such a manner that
they do not prevent the ascension of the bell, we have considered it suitable to
provide a special arrangement so as to make the devices, controlling the feeding
of the carbide independent of the height of the bell. The modified feeding device
is very suitable in this respect. In this modified device the pawls are two in
number, as in the device described above but contrarily to the latter they are
mounted upon the same shaft and have such a position that the one is in
engagement with the ratchet wheel, when the other is out of engagement with
the same (see Figs. and 9). The guide rod of the hell of the above described
device, which rod acts directly upon the pawls, is in this case substituted by a rod 29,
surrounded by a tube 28 and provided with points 30, extending through a
vertical slot in the tube. The rod 29 is at its upper end connected to a chain
running over grooved discs and fixed to the top of the gas holder hell. The feed-
ing device consists as before of star shaped wheels 31 and the spaces between the
ridges of said wheels always meet at the rotation of the wheels and correspond
when together to the shape of the carbide cartridge or other carbide wrapper
which may be round, square etc.
The shaft of the one wheel carries the ratchet wheel 32 which is actuated by
the hooks of the pawl 33 which is so adjusted that it is alternately acted upon
by the points 30, the hooks being thereby alternately engaged with or dis-
engaged from the teeth of the wheel 32 (as indicated above). The cartridges
(if such are used) are fed from a rectangular chute (see the drawing) provided
with sheet metal doors of a suitable size, said doors being for instance, movable
on hinges and closed by means of hooks. The chute is provided below with a
hook 34 acting automatically. At the operation of the apparatus this hook is
kept out of the chute, which consequently is open, but when the chute is to be
filled with carbide cartridges or other wrappers containing carbide, the chute

page_text: forming the magazine is removed, the hook moves under the inferior end of the
same and the chute is brought to a horizontal position, for instance on a table
for being charged. It is evident, that the hook which, for instance, may be
acted upon by a spring has for its purpose to prevent the cartridges from falling
out of the chute. When the chute has been brought in place and the hook
pulled out of the same, the carbide cartridges (or the like) contained in it fall
down upon the cartridges in a stationary chute piece. In large acetylene
generators the chute would become so high that the height of the chamber in
which the generator is placed would not suffice. For this reason several chutes
may be employed, arranged suitably side by side.
The device adapted for taking up the lime formed by the carbide at the pro-
duction of the gas consists of a vessel 35, arranged in direct communication with
carbide feeder. The vessel 35 is in the present case supported on the upper
edges of the cistern 38 by means of rods 336 on the sides of the same and by means
of hooks 37 arranged on the rods 36. The cistern 38 may be provided with
handle 39 and cover 40. In order that no interruption of the operation of the
apparatus may take place there may be two vessels 35 for each apparatus. When
the one is used, the other is empty and ready to replace the first mentioned one.
The removal of the vessels 35, the upper parts of which are surrounded by a gas
catch 41, is carried out by lifting the handles on the rods 36 so as to make the
hooks 37 free from the edges of the cistern 38 and by then moving the vessel 35
along one side of the said cistern, which side may preferably be oblique after
the vessel has been moved below the lower edge of the gas catch. The inlet for
the carbide cartridges or packets has an oblique position, but it is for the rest
of the same construction as in the apparatus described above. In the operation
the carbide cartridges or packets fall down partly in consequence of their own
weight and partly under the influence of a disc for a weighted rope and a winding
device with a ratchet wheel (not shown in the drawing). The latter arrange-
ment is however not required in all apparatus.
For making the function of the apparatus more sure, two gas bells, the gas
pressures within which are different, may be used. The feeding devices which
in this instance preferably are two in number, one for each hell, work inde-
pendently of one another, but they deliver the carbide packets to a common
inlet.
The cross section of the bells for instance, need only be half as great as in
the construction described. The operation of the apparatus will be as follows.
At the beginning of the generation of the gas the light gas bell rises and soon
reaches its upper position. Then the heavy bell begins to rise and soon reaches
its upper position, whereafter this bell delivers its contents to the pipe leading
to the burners. If by any reason the feeding device of the latter bell should
be disturbed the light bell and the feeding device of the same cause a continued
function of the apparatus.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;-
1. An improved apparatus for generating acetylene gas, which apparatus is
automatically fed with calcium carbide, or the like in pieces or in certain
quantities and characterized thereby, that on two sides of the chute or the like,
through which the gas generating material is fed to the generator, are located
means preventing an irregular feeding of gas generating material to the generat-
ing chamber, for instance wheels (7), having recesses at their circumferences and
arranged in such a manner that the recesses, or spaces between the teeth or ridges
of the opposed wheels meet, the shafts of the wheel series on both sides of the
chute being provided with toothed wheels (9) engaging in one another and of
which one is actuated by a pinion (10) the shaft of which carries a ratchet or
cam dise (16) acting upon the pawls (15) which are arranged in such a manner,

page_text: that they alternately have a checking influence upon the disc (16) thereby, that
points (14) on the guide rod (13) of the gas bell at the descension of the bell
successively bring the pawls (15) out of engagement with the ratchet or cam
disc (16) and at their ascension pass the articulated ends of the said pawls, without
turning the pawls, substantially as set forth.
2. In an improved apparatus for generating acetylene gas as in Claim (1), the
arrangement of a spirally wound ribbon (3), between the turns of which the
carbide gas generating material is located, divided in portions and the one end of
which ribbon is fixed to a shaft (4), carried by a lever (17), provided with a
handle (18) and the one end of which lever rests on the frame of the apparatus,
while its other end can be swung round a shaft mounted in the frame, the other
end of the ribbon being connected to a roller (48), rotatable on the same shaft as
the lever (17), the outlet opening for the carbide formed between the two utmost
ribbon turns, communicating with the chute or tube leading to the generating
chamber, in order that the roller (48) put in motion by means of toothed wheels
and a weight or other known arrangement may force the carbide down into the
generator, substantially as set forth.
3. A modification of the arrangement, described in Claims (1) and (2), con-
sisting partly therein that the pawls instead of acting on the pinion (10) are
united to one pawl with two hooks and so adjusted that it is alternately actuated
by points (30) on the rod (29), connected to the gas bell and movable in a
tube (28), provided with a longitudinal slot for the points (30), and partly therein
that the spiral shaped magazine and the lever (17) are substituted by one (or
more) vertical tube or chute opening into the chute, leading to the generator,
substantially as set forth.
4. In an apparatus for generating acetylene gas as described above an arrangement
for taking up the lime, produced from the carbide by the generation of the gas,
in such a manner that interruption of the operation does not take place, consist-
ing of a vessel (35), communicating with the carbide or other feeding in device,
the vessel (35) having its upper edge located in the gas catch (41) lying in
water, and being on its side provided with rods (36) on which are handles and
hooks, the latter resting on the edge of the water cistern of the apparatus, sub-
stantially as set forth.
5. In the chute adapted for the feeding of the gas generating material into
the apparatus and provided with doors for the introduction of this material
into the same, the arrangement of a hookshaped or otherwise formed part (34),
which is pivotally fixed to the chute and acted upon by a spring, so that the
chute, when necessary can be closed below, substantially as set forth.
Dated this 20th day of June 1800
HERBERT HADDAN & Co.,
Agents for the Applicants, 18, Buckingham Street, Strand, London,