Year: 1899

page_text: Date of A application, ist Dec.,
1077
Complete Specification Left, 29th Aug., 1900-Accepted, 29th Sept., 1900
Date of Application, 18 Dec., 199
Complete Specification Left, 29th Aug., 1900-Accepted, 29th Sept., 1900
We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE
JAKEMAN, Engineers, Greenwich Road, in the County of Kent, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to that form of chemical fire engine, wherein an alkaline
solution is carried in a closed vessel, and pressure raised in the same by the
admixture of a certain quantity of acid carried in a receptacle inside the closed
vessel.
One method of carrying out our invention is as follows:-
The receptacle for containing the acid is preferably a glass bottle. The mouth
of the bottle is sealed by means of a thin capsule of suitable metal to resist acid.
The sealed bottle is placed in a cage in the alkali vessel, mouth upwards, the
cage being of considerably greater length than the bottle. Upon the underside
of the cover closing the orifice in the vessel, through which the bottle is intro-
duced, we provide prongs or cutters capable of perforating the capsule closing
the bottle.
When the apparatus is not in action the bottle stands mouth upwards in the
cage, and the cover of the vessel is firmly secured.
When required for use the whole apparatus is inverted when the bottle slides
down the cage mouth downwards and the capsule is perforated by the prongs or
cutters provided on the cover for the purpose. This liberates the acid and permits
its action ou the alkaline solution in the usual manner. In some cases we pro-
vide a weight at the bottom of the cage to give additional impetus to the bottle
when perforating the capsule.
In another form we use a lever or other mechanical appliance for actuating the
perforating apparatus.
In cases where we make use of an agitator to mix the liquids in the vessel we
arrange for the first movement of the mechanism to perforate the capsule.
Dated this 30th day of November 1899.
J. C. MERRYWEATHER.
C. J. W. JAKEMAN.

page_text: 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:-
-
Our invention relates to that form of chemical fire engine, wherein an alkaline
solution is carried in a closed vessel, and pressure raised in the same by the
admixture of a certain quantity of acid carried in receptacle inside the closed
vessel.
One method of carrying out our invention is as follows:-
The receptacle for containing the acid is preferably a glass bottle. The mouth
of the bottle is sealed by means of a thin capsule of suitable metal to resist acid.
The sealed bottle is placed in a cage in the alkali vessel, mouth upwards, the
cage being of considerably greater length than the bottle. Upon the underside
of the cover closing the orifice in the vessel through which the bottle is intro-
duced, we provide prongs or cutters capable of perforating the capsule closing
the bottle.
When the apparatus is not in action 'the bottle stands mouth upwards in the
cage, and the cover of the vessel is firmly secured.
When required for use the whole apparatus is inverted when the bottle slides
down the cage mouth downwards and the capsule is perforated by the prongs or
cutters provided on the cover for the purpose. This liberates the acid and permits
its action on the alkaline solution in the usual manner. In some cases we pro-
vide a weight at the bottom of the cage to give additional impetus to the bottle
when perforating the capsule.
In another form we use a lever or other mechanical appliance for actuating the
perforating apparatus.
In some cases where we make use of an agitator to mix the liquids in the. vessel
we arrange for the first movement of the mechanism to perforate the capsule.
In the accompanying drawings,
Fig. 1. Shows the form of chemical engine which is operated by its inversion.
Fig. 2. Shows the form of chemical engine in which a lever is used for actuat-
ing the perforating apparatus.
Fig. 3. Shows the form of chemical engine in which an agitator is used, the
first movement of which actuates the perforating apparatus.
B is the
In Fig. 1, A is the closed vessel carrying the alkaline solution.
bottle containing the acid. The bottle is made of lead or other acid resisting
material and is sealed by a thin metal capsule C secured to the mouth of the
bottle by the screwed cap D. Eis the cage in which the acid bottle is placed.
Fis the cover closing the orifice of the vessel A. G is the cutter for perforating
the capsule Cand is fixed to the cover F. H is an outlet fitted for the attach-
ment of flexible hose. Upon the inversion of the vessel A the acid bottle B
slides down the cage E, the capsule C falling on and being perforated by the
cutter G, thus liberating the acid and permitting its action on the alkaline solu-
tion contained in the vessel A.
In Fig. 2, A is the closed vessel carrying the alkaline solution. B₁ is the
bottle containing the acid sealed by the thin metal capsule C¹ secured to the
mouth of the bottle by the screwed cap D¹. E¹ is a receptacle in which the
bottle is placed. F¹ is the cover closing the orifice of the vessel A¹. G¹ is the
cutter for perforating the capsule C. The cutter G₁ is operated by the cam H¹
fixed to a shaft K' actuated by an external lever L¹.
In Fig. 3, A2 is a portion of the closed vessel carrying the alkaline solution.
B2 is the bottle containing the acid sealed by a thin metal capsule C secured to
the mouth of the bottle by the screwed cap D². E is a receptacle in which the
bottle is placed. Fis the cover closing the orifice of the vessel A2. G2 is the
cutter for perforating the capsule C². The cutter G2 is operated by the cam H2
fixed to a shaft K2 and rotated by an external handle L2. M2 and N2 are agitators
fixed to the shaft K2 for mixing the liquids.
In Figs. 2 & 3 we do not confine ourselves to the cam motion shown for actuat-

page_text: ing the cutter as obviously a lever, screw or other mechanical device can be sub-
stituted.
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. In a chemical engine the method of sealing the bottle by a thin metal capsule
substantially as illustrated and described.
2. In a chemical engine the method of perforating the capsule by the inversion
of the apparatus substantially as illustrated and described.
3. In a chemical engine the method of perforating the capsule by a lever
operated from the exterior of the apparatus substantially as illustrated and
described.
4. In a chemical engine the method of perforating the capsule by the rotation
of a shaft substantially as illustrated and described.
5. In a chemical engine the combination of perforating mechanism and agita-
tor substantially as illustrated and described.
Dated this 29th day of August 1900.
J. C. MERRYWEATHER.
C. J. W. JAKEMAN.