Improvements in Gas Generators.
Year: 1898

page_text: Improvements in Gas Generators.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
-
My invention relates to improvements in gas generators and consists of a gas
chamber or generator which rises and falls in a manner hereinafter fully described,
a water chamber a gas generating or producing chamber for receiving the gas
producing material, means of communication with said generating chamber, con-
sisting of a chute and a holder for supplying the gas producing material. The
apparatus is especially adapted for use in the generation of acetylene gas from
calcium carbide.
Supported upon brackets secured to the upright posts is a horizontal guide
or track consisting of two rails bent in the form of arcs of concentric circles and
having their centre in the axis of the gas generator. Running upon said track
is a carbide holder suitably provided with wheels and bent to conform to the
circular form of the track which is formed with the flanges adapted to properly
guide the holder in its travel. The said holder is provided with a plurality of
compartments each of which is provided in the bottom with a discharging door
which when unlocked is adapted to fall downward by gravitation. Intermediately
of the rails is a lock rail suitably secured and projecting upwardly a distance
sufficient to cause said doors, when resting upon it, to be closed and by frictional
contact to cause them to remain closed and locked while the holder is travelling
upon the track. The chute extends upwardly and terminates immediately below
the track; at this point the rail is interrupted, a portion being removed of a length
sufficient to permit a door to drop through and permit the carbide to be dis-
charged into the chute. A suitable cover for covering the holder is provided.
Secured to the inner side of the holder is a rack which is engaged by a pinion
secured to a shaft journalled in a bearing secured in a suitable manner to the
track. At the opposite end of the said shaft is secured a sprocket wheel provided
with curved teeth. The upwardly curved sprocket teeth are located in the path
of a depending rod pivoted to the top of the gas chamber. The length of said rod
and the sizes of the sprocket and pinion are so adjusted that when the gas
chamber has fallen to its extreme lower limit or substantially so, the rod will
have actuated the sprocket and the pinion will have rotated sufficiently to have
moved the holder a distance equal to that between the centres of two adjacent
carbide compartments.
A water chamber is supported upon a hollow base of inverted conical shape,
which in turn is supported by suitable means on the before mentioned guide rods,

page_text: and a hollow cylinder of smaller diameter than the gas chamber rests in and is
secured to the water chamber. A water supply pipe passes through the water
chamber and enters into the small hollow cylinder and also by another branch
enters the said water chamber at the top into the annular space formed between
the gas chamber and the water chamber; the said water chamber and annular
space and the hollow cylinder may by this arrangement be filled to the required
height with water.
Formed integral with and depending from the lower face of the cone shape
bottom are two hangers forming the journal bearing for two cams on the outside
of said hangers, the lever arms of said cams are bent around and joined, con-
tinuing in a single ratchet toothed arm. A dog secured upon said cone shaped
bottom and near said lower face, is adapted to engage the ratchet teeth and
secure said arm against upward movement. Valve guides formed integral with or
secured to the inside of the neck of said cone shaped bottom guide a valve to its
valve seat. The said valve is suspended from a link connected to the end of a
crank whose shaft is journalled in a suitable bearing.
The said shaft passes
through the shell of the funnel and has attached to its outer end a hand lever by
means of which said valve may be seated or unseated.
The gas producing chamber or carbide receiver is mounted upon rollers so that
it may be moved from or placed in its position under the neck of the base of
the water chamber. The upper rim of said chamber is formed with a flange of a
diameter which will permit it to pass between the hangers; the height of said
chamber is such that the flange will enter between said hangers just above the
cams when the cam lever is in its raised position. A washer is interposed between
said flange and the lower face of the water chamber base to form a water tight
joint.
The chute extends angularly from beneath the carbide holder and enters the
side of the water chamber and the inner cylinder, passing through the annular
space between the water chamber and inner cylinder, being thus in direct com-
munication with the gas producing chamber. The upper end of the small
cylinder is covered with a conical cover having in its centre an opening sur-
rounded by a cylindrical ring. In the bottom of said ring is supported a per-
torated disc and over the top of said ring is secured in a suitable manner a strip
of cheese cloth. The space between the cloth and the perforated disc being filled
with charcoal.
Suitable rollers are secured to the top of the gas chamber and engage with the
guide rods, thereby guiding the said gas chamber in its rise and fall.
The gas generator is manipulated and operated as follows;
The compartments of the carbide holder are filled with substantially fixed and
equal charges, such charges being sufficient to about fill the gas chamber when
at its highest point of travel. The carbide holder, depending rod, sprocket and
pinion having been adjusted so that the engagement of the rod will have moved
the end compartment exactly over the chute, the door is permitted to fall and the
carbide charge is discharged into the chute from which it enters the conical
bottom of the water chamber by which it is deflected beneath the valve in the
neck of the latter and drops into the gas generating cylinder secured thereto.
The water chamber having been filled with water to a point just below the top
of the inner cylinder the said generating chamber has also been filled with water.
As soon as the carbide enters the generating chamber, acetylene gas is generated
and passes upwardly through the water in the water chamber and through the
chaiccal interposed between the gas chamber and the said gas generating cham-
ber, the said charcoal acting as a purifying filter. The acetylene gas fills the gas
chamber above the surface of the water and begins to lift it upwardly. In this
upward movement the rod is carried along and on coming in contact with the
sprocket-wheel slides off the lower surface of the engaging teeth.
Gas now being withdrawn from the gas chamber, the latter falls and on near-

page_text: ing the lower limit of its fall the rod engages the sprocket wheel in the manner
above described, thereby causing the next compartment of the carbide holder to
be moved over the chute and the contents thereof discharged into the latter. The
gas holder thereupon again rises. The said compartments are hence automati-
cally intermittently and successively moved and the contents thereof discharged
at a fixed point in the travel of the carbide holder, thus charging the apparatus as
required.
The doors are again closed by the contact therewith of the rail on the opposite
side of the interruption.
The above arrangement is especially advantageous in that the charged compart-
ments are never over or connected with the chute at any time excepting at the
time of the discharge whereby moisture rising from the water in the chute, is
excluded from the said charged compartments, thus insuring the contents of the
latter from deterioration which would follow such communication and consequent
contact with said moisture.
In order to provide for the regulation of the pressure of the gas in the gas
chamber, I provide a tube open at the bottom and secured to the top of the said
chamber, which tube depends and travels in a second tube which extends down-
wardly into the water chamber and is closed at the bottom. A pipe enters the
bottom of said second tube and extends upwardly into the gas chamber projecting
a short distance over the water's surface its lower extremity communicating with
the atmosphere. The length of the second tube is such that when the gas chamber
reaches a predetermined height near the limit of its upward travel, the lower end
of said first tube will have risen over the surface of the water, thereby allowing
a portion of the gas to escape into the outlet pipe. In this manner the pressure
of the gas is always that due to the weight of the gas chamber, that is, it is
substantially constant.
When the gas generating chamber is full of spent carbide, the valve in the
neck of the water chamber base is lowered upon its seat, thus scaling the water
chamber and shutting off the water therein from the said generating chamber:
the engaging dog is then disengaged from the cam lever which is raised to move
the cams to permit the said generating chamber to drop upon the floor and be
removed from beneath the water chamber. The spent material may then be
removed while the water and gas chambers are both sealed. After removal of
the spent carbide the generating chamber is replaced in position and the valve
raised off its seat, thereby again filling the said chamber with water.
I may if desired modify the construction of the carbide holder by making the
track straight instead of circular as above described.
A further modified form of my carbide holder may consist of a belt having
attached thereto upright partition's the whole being inclosed in a casing, the said
belt running around two pulleys, one of which is secured to the shaft on which is
secured the sprocket wheel.
Dated this 23rd day of March 1808

page_text: 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 gas generators and is illustrated in the accompanying
drawings in which:
Figure I represents a side elevation of my improved gas generator;
Figure II represents a top plan view thereof;
Figure III represents a sectional view taken upon the line 3--3 in Figure II;
Figure IV represents a detail view of the means for actuating the holder which
contains the gas producing material;
Figure V represents a vertical central cross-sectional view of the gas and water
chambers;
Figures VI and VII represent a top plan and a broken side elevation respec-
tively of two modified forms of gas producing material holder;
Figure VIII represents an elevation of the deflecting means showing the gas
producing chamber attached thereto;
Figure IX represents a vertical conical cross-sectional view taken on line 9-9,
Figure VIII, of the means for deflecting the gas producing, material, showing also
the means for securing the gas generating chamber to the bottom of the water
chamber and the generating chamber in elevation secured thereto;
Figure X represents a top plan of the guide for guiding the material holder,
and
Figure XI represents a cross-sectional view taken on line 11-11, Figure II,
showing a holder compartment in position for discharging the gas producing
material.
My improved apparatus consists of a gas chamber A which rises and falls in a
manner hereinafter fully described, a water chamber A', a gas generating cham-
ber B for receiving the gas producing material, means of communication with
said generating chamber, consisting of a chute C and a holder F for supplying
the gas producing material. The said apparatus is especially adapted for use in
the generating of acetylene gas from calcium carbide.
Supported upon brackets secured to the upright guide posts is a horizontal
guide or track consisting of two rails EE bent in the form of ares of concentric
circles and having their centre in the axis of the gas generator. Running upon
said track is a carbide holder F suitably provided with wheels and bent to con-
form to the circular form of the track which is formed with the flanges ee adapted
to properly guide the holder in its travel. The said holder is provided with a
plurality of compartments f each of which is provided in the bottom with a dis-
charging door f which when unlocked is adapted to fall downward by gravitation.
Intermediately of the rails is a lock rail (suitably secured and projecting
upwardly a distance sufficient to cause said doors, when resting upon it, to be
closed and by frictional contact to cause them to remain closed and locked while
the holder is travelling upon the track. The chute C extends upwardly and ter-
minates immediately below the track at this point the rail G is interrupted, a
portion being removed of a length sufficient to permit a door f¹ to drop through
and permit the carbide to be discharged into the chute. A suitable cover få for
covering the holder is provided.
Secured to the inner side of the holder is a rack H, Figure III which is
engaged by a pinion J secured to a shaft j journalled in a bearing ¹ secured
in a suitable manner to the track. At the opposite end of the said shaft is
secured a sprocket wheel K provided with curved teeth k, Figures IV and VII.
The upwardly curved sprocket teeth are located in the path of a depending rod L
pivoted to the top of the gas chamber A. The length of said rod and the sizes
of the sprocket and pinion are so adjusted that when the gas chamber has fallen
to its extreme lower limit or substantially so, the rod will have actuated the
sprocket and the pinion will have rotated sufficiently to have moved the holder
a distance equal to that between the centres of two adjacent carbide compartments,

page_text: A water chamber A¹ is supported upon a hollow base A2 of inverted conical
shape, which in turn is supported by suitable means on the before mentioned
guide rods d, and a hollow cylinder A³ of smaller diameter than the gas chamber A
rests in and is secured to the water chamber A', as shown in Figure V. A water
supply pipe P passes through the water and enters into the cylinder A3 and also
by another branch enters the said water chamber at the top into the annular
space formed between the gas chamber and the water chamber; the said water
chamber and annular space and the hollow cylinder may by this arrangement be
filled to the required height with water.
Formed integral with and depending from the lower face of the cone shape
bottom A2, Figures VIII and IX are two hangers a forming the journal bearing
for two cams 6 on the inside of said hangers; the lever arm 6 of said cams are
bent around and joined, continuing in a single ratchet toothed arm 62. A dog a¹
secured upon said cone shaped bottom and near said lower face, is adapted to
engage the ratchet teeth and secure said arm 12 against upward movement. Valve
guides, Figures VIII and IX formed integral with or secured to the inside of
the neck of said cone shaped bottom guide a valve A to a valve seat The said
valve is suspended from a link a, connected to the end of a crank, whose
shaft a is journalled in a suitable bearing a'. The said shaft passes through the
shell of the funnel and has attached to its outer end a hand lever a8, by means
of which said valve may be seated or unseated.
The gas producing chamber or carbide receiver B is mounted upon rollers so
that it may be moved from or placed in its position under the neck of the base of
the water chamber. The upper rim of said chamber is formed with a flange B¹
of a diameter which will permit it to pass between the hangers a; the height of
said chamber is such that the flange will enter between said hangers just above
the cams when the cam lever is in its raised position shown in dotted lines in
Figure VIII. A washer is interposed between said flange and the lower face
of the water chamber base to form a water tight joint.
The chute C extends angularly from beneath the carbide holder and enters the
side of the water chamber and the inner cylinder, passing through the annular
space between the water chamber and inner cylinder, being thus in direct com-
munication with the gas producing chamber. The upper end of the cylinder A³
is covered with a conical cover As having in its centre an opening surrounded by
a cylindrical ring a. In the bottom of said ring is supported a perforated disc aio
and over the top of said ring is secured in a suitable manner a strip of cheese
cloth a. The space between the cloth and the perforated disc being filled with
charcoal Aº.
Suitable rollers A7 are secured to the top of the gas chamber and engage with
the guide rod d, thereby guiding the said gas chamber in its rise and fall.
The gas generator is manipulated and operated as follows:-
The compartments of the carbide holder are filled with substantially fixed and
equal charges, such charges being sufficient to about fill the gas chamber when
at its highest point of travel. The carbide holder, depending rod, sprocket and
pinion having been adjusted so that the engagement of the rod will have moved
the end compartment f³ exactly over the chute C, the door is permitted to fall into
the position shown in dotted lines in Figure XI; and the carbide charge is thus
discharged into the chute from which it enters the conical bottom of the
water chamber by which it is deflected beneath the valve in the neck
of the latter and drops into the gas generating cylinder secured thereto. The
water chamber having been filled with water to a point just below the top of the
inner cylinder A³, the said generating chamber has also been filled with water.
As soon as the carbide enters the generating chamber, acetylene gas is generated
and passes upwardly through the water in the water chamber and through the
charcoal interposed between the gas chamber and the said gas generating chamber,
the said charcoal acting as a purifying filter. The acetylene gas fills the gas
cylinder above the surface of the water and begins to lift it upwardly. In this

page_text: upward movement the rod L is carried along and on coming in contact with the
sprocket wheel slides off the lower surface of the engaging teeth k.
Gas now being withdrawn from the gas chamber, the latter falls and on near-
ing the lower limit of its fall the rod engages the sprocket wheel in the manner
above described, thereby causing the next compartment of the carbide holder to
be moved over the chute and the contents thereof discharged into the latter. The
gas holder thereupon again rises. The said compartments are hence automati-
cally intermittently and successively moved and the contents thereof discharged
at a fixed point in the travel of the carbide holder, thus charging the apparatus as
required.
The doors are again closed by the contact therewith of the rail on the opposite
side of the interruption.
The above arrangement is especially advantageous in that the charged compart-
ments are never over or connected with the chute at any time excepting at the
time of the discharge whereby moisture rising from the water in the chute, is
excluded from the said charged compartments, thus insuring the contents of the
latter from deterioration which would follow such communication and consequent
contact with said moisture.
A
In order to provide for the regulation of the pressure of the gas in the gas
chamber, I provide a tube M, Figure V, open at the bottom and secured to the
top of the said chamber, which tube depends and travels in a second tube N,
which extends downwardly into the water chamber and is closed at the bottom.
pipe enters the bottom of said tube N and extends upwardly into the gas cham-
ber projecting a short distance over the water's surface its lower extremity com-
municating with the atmosphere. The length of the tube M is such that when
the gas chamber reaches a predetermined height near the limit of its upward
travel, the lower end of said tube M will have risen over the surface of the water,
thereby allowing a portion of the gas to escape into the outlet pipe 0. In this
manner the pressure of the gas is always that due to the weight of the gas
chamber, that is, it is substantially constant.
For automatically closing the receiving end of the chute C, I provide a valve C¹
in the upper or receiving end thereof (see Figure 3), which opens on the discharge
of carbide upon it and closes on the discharge from it of the said carbide. The
closing action of said valve C is brought about by a counter weight C secured
thereto. The object of said valve is to prevent moisture from the generator rising
in the chute and decomposing the carbide in the holder. represents a guard
for deflecting the carbide on to the valve.
When the gas generating chamber is full of spent carbide, the valve in the
neck of the water chamber base is lowered upon its seat. thus sealing the water
chamber and shutting off the water therein from the said generating chamber;
the ena dug is then disengaged from the cam lever which is raised to move
the casas to permit the said generating chamber to drow upon the flow and be
em: ved from beneath the water chamber. The spent material may then be
removed while the water and gas chambers are both sealed. After removal of
the spent carbide the generating chamber is replaced in position and the valve
raised off its seat, thereby again filling the said chamber with water.
Figure VI illustrates a carbide holder of my improved form differing only from
the holder above described in that it has a straight instead of circular track.
In a further modification Fig. VII I have shown a carbide holder consisting
of a belt having attached thereto upright partitions the whole being enclosed in
a casing, the said belt running around two pulleys, one of which is secured to the
shaft on which is secured the sprocket wheel K.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my foreign corespondent, I declare that what I claim is:
1. In a gas generator, the combination with a rotary holder provided with a

page_text: plurality of compartments, of a chute with which the compartments are adapted
to successively communicate, a gas producing chamber with which the chute
communicates, automatic mechanism for revolving the holder, and means for
automatically closing the receiving end of the chute after the discharge into it
of the contents of any one of the compartments of the holder, substantially as
set forth.
2. In a gas generator, the combination with a rotary holder divided into a
plurality of radial compartments, of a casing enclosing the holder and having
a feed opening and a discharge opening, a door for each compartment adapted
to be kept closed by contact with the enclosing casing, and to open automatically
upon reaching the discharge opening of the casing, a chute communicating
with the discharge opening of the casing, means for automatically revolving the
holder, and a gas producing chamber with which the chute communicates, sub-
stantially as set forth.
3. In a gas generator, the combination with a rotary holder divided into radial
compartments, of an enclosing casing provided with feed and discharge openings,
a door for each compartment, adapted to be kept closed by contact with the casing
except when opposite the discharge opening of said casing, a chute communicat-
ing with the discharge opening of the casing, a gas-producing chamber with
which the chute communicates, means for revolving the holder intermittently,
and means for automatically closing the receiving end of the chute alter the dis-
charge into it of the contents of any one of the compartments of the holder, sub-
stantially as set forth.
4. In a gas generator, the combination with a gas receiving chamber adapted
to rise and fall by the variation of gas pressure therein, of a rotary holder divided
into a plurality of radial compartments, a casing enclosing said holder, and pro-
vided with feed and discharge openings, mechanism operated by the rise and fall
of the gas receiving chamber for controlling the revolution of the holder, doors
for said compartments adapted to be kept closed by contact with the casing, and
to open automatically when opposite the discharge opening in said casing, a
chute communicating with said discharge opening, a gas producing chamber into
which the chute discharges, and means for automatically closing the receiving
end of said chute after each discharge into it from the holder, substantially as
set forth.
5. The combination with a gas receiving chamber, of a rotary holder divided
into radial compartments and provided with doors, a casing enclosing the holder,
means for intermittently revolving the holder controlled by the movement of
the gas receiving chamber, a chute communicating with the discharge opening
of the casing, an automatic valve for said chute and a gas producing chamber
into which the chute empties, substantially as set forth.
6. In a gas generator, the combination of a rotary holder provided with a
plurality of compartments adapted to contain certain charges of gas producing
material and inclosed in a casing provided with an opening, a gas producing
chamber, a chute connecting said chamber with said opening, means for inter-
mittently rotating said holder to successively bring each compartment over said
opening whereby the contents of such compartment may be discharged into said
chute, substantially as set forth.
7. In a gas generator, the combination of a rotary holder provided with a
plurality of compartments adapted to contain certain charges of gas producing
material and inclosed in a casing, each compartment provided with an outwardly
opening door, said casing provided in the bottom with an opening, a gas pro-
ducing chamber, a chute connecting said chamber with said opening, means for
automatically and intermittently rotating said holder to successively bring each
compartment over said opening, whereby the door of said compartment may open
by gravitation and the contents discharged into the chute. Substantially as set
forth.
8. In an acetylene gas generator, the combination with a water chamber, a

page_text: carbide chamber, and a coupling for detachably securing said two chambers
together, substantially as set forth.
9. In an acetylene gas generator, the combination with a water chamber pro-
vided with a converging chamber for receiving the gas generating material, a
valve for sealing the water chamber, and a chamber for receiving the gas generat-
ing material, and a coupling device for detachably securing the last named cham-
ber to the water chamber, substantially as set forth.
10. In an acetylene gas generator, the combination of a water chamber, a
chamber for receiving the gas generating material, a coupling device for remov-
ably securing said generating material chamber to said water chamber, and means
for controlling communication between said two chambers, substantially as set
forth.
11. In an acetylene gas generator, the combination of a horizontal guide, a
carbide holder adapted to run upon said guide and provided with a plurality of
carbide compartments provided with a chute adapted to receive and convey the
carbide to the gas generating chamber, and means for automatically actuating
said holder to successively discharge the contents of said compartments into said
chute, substantially as set forth.
12. In an acetylene gas generator, the combination of a horizontal track, a car-
bide holder adapted to run upon said track and provided with a plurality of
carbide compartments, each compartment provided with a discharging door, and
means for opening said door at a fixed point in the travel of the said holder, sub-
stantially as set forth.
13. In an acetylene gas generator, the combination of a horizontal track, a car-
bide holder adapted to run upon said track and provided with a plurality of
carbide compartments, each compartment provided with a discharging door, a
lock for locking said door, and means for unlocking the latter at a fixed point
in the travel of the said holder, substantially as set forth.
14. In an acetylene gas generator, the combination of a horizontal track, a car-
bide holder adapted to run upon said track and provided with a plurality of car-
bide compartments, each compartment provided with a discharging door. and
means for holding said doors closed by frictional contact therewith, said means being
interrupted, whereby said doors may be successively opened at a fixed point in
the travel of the said holder, substantially as set forth.
15. In an acetylene gas generator, the combination of a horizontal track, a car-
bide holder adapted to run upon said track and provided with a plurality of car-
bide compartments, each compartment provided in the bottom thereof with a dis-
charging door, a rail, said doors when closed resting upon said rail, and said
rail being interrupted whereby said doors may open at said interrupted point,
substantially as set forth.
16. In an acetylene gas generator, the combination of a horizontal track, a car-
bide holder adapted to run upon said track and provided with a plurality of car-
bide compartments, a chute communicating with the gas generating chan her of
said generator, a rack secured to said holder, a pinion engaging said rack, and
means adapted to operate said rack and pinion to intermittently and successively
move each carbide compartment over and discharge the contents thereof into said
chute, substantially as set forth.
17. In an acetylene gas generator having a gas chamber operated by the gene-
rated gas, the combination of a horizontal track, a carbide holder adapted to run
upon said track and provided with a plurality of carbide compartments, a chute
communicating with the gas generating chamber of said generator, a rack secured
to said holder, a pinion engaging said rack, a sprocket wheel operatively con-
nected with said pinion and means secured to said gas chamber for actuating said
sprocket wheel to operate said rack and pinion to successively move each carbide
compartment over and discharge the contents thereof into said chute, substantially
as set forth.
18. In an acetylene gas generator, the combination of a gas chamber, a carbidę

page_text: chamber, means for sealing said gas chamber, and means for removing spent car-
bide while the said gas chamber is sealed, substantially as set forth.
19. In an acetylene gas generator, the combination of a water chamber pro-
vided with a chamber for receiving the gas generating material, means for sealing
the water chamber, and means for removing said material while said chamber is
so sealed, substantially as set forth.
20. In an acetylene gas generator, the combination of a water chamber a cham-
ber for receiving the gas generating material, means for removably securing said
generating material chamber to said water chamber, and means for controlling
communication between said two chambers, substantially as set forth.
21. In an acetylene gas generator, the combination of a water chamber, a
chamber for receiving the gas generating material, means for removably securing
the said generating material chamber to the bottom of said water chamber, and
means for controlling communication between said two chambers, substantially
as set forth.
22. In an acetylene gas generator, the combination of a water chamber, a car-
bide holder formed at the top with a flange, means for securing said flange to the
bottom of said water chamber to form a water tight joint, substantially as set
forth.
23. In an acetylene gas generator, the combination of a gas receiver, a carbide
holder, means of communicating between said holder and receiver, and means
for deflecting the carbide from said communicating means, substantially as set
forth.
24. In an acetylene gas generator, the combination of a gas receiver having a
water chamber, a carbide holder, means of communication between said holder
and chamber and means for deflecting the carbide from said communicating
means, substantially as set forth.
25. In an acetylene gas generator, the combination of a gas receiver, a carbide
holder, and means of communication between said holder and chamber, said
chamber provided with means for deflecting said carbide, substantially as set forth.
26. In an acetylene gas generator, the combination of a water chamber, a gas
generating chamber, a carbide holder, means of communication between said
holder and water chamber, and means for deflecting the carbide from the com-
municating means into said generating chamber. substantially as set forth.
27. In an acetvlene gas generator, the combination of a water chamber, a gas
generating chamber, a carbide holder, a feeding chute communicating with said
holder and water chamber, said water chamber having an inclined bottom adapted
to deflect the carbide from said chute into the generating chamber, substantially
as set forth.
1
28. In an acetylene gas generator, a receptacle containing a quantity of char-
coal and interposed between the gas generating chamber and the gas chamber,
whereby the gas generated is caused to pass through said charcoal before entering
said gas chamber, substantially as set forth.
29. In an acetylene gas generator, provided with a water chamber adapted to
be actuated by the generated gas, the combination with a tube depending from
the inside of said gas chamber and open at its lower extremity, of a pipe
communicating with the atmosphere and projecting over the surface of the water
and into the said tube, substantially as set forth.
1000
HASELTINE. LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.