Improvements in Caloric Engines and Pumps Employed in Connection therewith.
Year: 1886

page_text: Date of Application, 9th Oct., 1886.
Complete Left, 1st July, 1887.
Complete Accepted, 2nd Aug., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Caloric Engines and Pumps Employed in
Connection therewith.
I, MAX NOBILING, of No. 5 Rondelstrasse, Gotha, Germany do hereby declare the
nature of this invention to be as follows:-
These improvements relate to small caloric engines such as may be used for
working indoor or garden fountains. The construction of such improved engines
will be readily understood on reference to the accompanying drawings in which Fig. 1
shews an elevation of the engine, the working cylinder being in section, Fig. 2 shews
a plan of the engine, Figs. 3 and 4 an elevation and plan, detached, of the fire pot,
with connections, Fig. 5 a detail of the pump, and Fig. 6 a modified construction of
the pump for the motor engine.
In small caloric engines of known construction the fire pot T has been fixed to the
displacer cylinder V by means of screws, and in order to remove the fire pot for
cleansing the same, the entire engine had to be turned upside down in order to get at
the screws readily.
This disadvantage is obviated in the present construction in a simple manner by
providing the fire pot with a lever action by means of which it is both fixed and
removed. As shewn in Figs. 3 and 4 the lever mechanism consists of a forked
lever a pivotted to pins c c on the upper end of the fire pot. The lever a has other
pins bb near those c c, which, when the fire pot is in the closed position, bear against
a recess or notch in the framing of the engine, as shewn at Figs.
removing the fire pot the lever is moved out of the vertical position into the dotted
horizontal position shewn at Fig. 3, whereby the pins bbare drawn out of the
recesses, and thus allow the fire pot to be removed. For fixing the fire pot again,
the lever a is raised from the horizontal to the vertical position.
and 3. For
Another improvement relates to the arrangement of the working cylinder as a fixed
cylinder A instead of an oscillating one as heretofore, in order to facilitate the
cleansing thereof and the removal of any water that may collect therein. The latter
is made to flow off through the hole at top on removal of the screw y therefrom, the
piston being at the same time made to move upwards.

page_text: The pump for effecting the circulation of cooling water for the upper part of the
displacer cylinder V is of very simple construction dispensing with all valves. The
foot of the oscillating pump is provided with projections as shewn at Figs. 1
and 5, which replace the valves when the pump is in action, by alternately
compressing and thus closing the flexible suction and delivery pipes ss. The
projection acts on the suction pipes and the position shewn on the drawings is
the commencement of the suction stroke, the projection ¹, having compressed
the delivery pipe s¹.
Fig. 6 shews another very simple construction of pump particularly suited for the
present purpose.
The valves for this double acting pump are formed by cup leathers.
The piston is provided with the cup leathers ii which act alternately as suction
and pressure valves, other pressure valves formed of cup leathers n n being provided
in a lateral chamber. The action of this pump will be readily understood without
further description.

page_text: COMPLETE SPECIFICATION.
Improvements in Caloric Engines and Pumps Employed in
Connection therewith.
I. MAX NOBILING of No. 5 Rondelstrasse, Gotha, Germany 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 :-
These improvements relate to small caloric engines such as may be used for
working indoor or garden fountains. The construction of such improved engines will
be readily understood on reference to the accompanying drawings in which Fig. 1
shews an elevation of the engine, the working cylinder being in section, Fig. 2 shows
a plan of the engine, Figs. 3 and 4 an elevation and plan, detached, of the fire pot.
with connections, Fig. 5 a detail of the pump, and Fig. 6 a modified construction of
the pump for the motor engine.
In small caloric engines of known construction the fire pot T has been fixed to the
displacer cylinder V by means of screws, and in order to remove the fire pot for
cleansing the same the entire engine had to be turned upside down in order to get at
the screws readily. This disadvantage is obviated in the present construction in a
simple manner by providing the fire pot with a lever action by means of which it is
both fixed and removed. As shewn in Figs. 3 and 4 the lever mechanism consists of
a forked lever a pivotted to pins c c on the upper end of the fire pot. The lever a has
other pins bb near those cc, which, when the fire pot is in the closed position bear
against a recess or notch in the framing of the engine, as shewn at Figs. 1 and 3.
For removing the fire pot the lever is moved out of the vertical position into the dotted
horizontal position shewn at Fig. 3, whereby the pins are drawn out of the
recesses, and thus allow the fire pot to be removed. For fixing the fire pot again,
the lever a is raised from the horizontal to the vertical position.
Another improvement relates to the arrangement of the working cylinder as a fixed
cylinder A instead of an oscillating one as heretofore, in order to facilitate the
cleansing thereof and the removal of any water that may collect therein. The latter
is made to flow off through the hole at top on removal of the screw g therefrom, the
piston being at the same time made to move upwards.
The pump for effecting the circulation of cooling water for the upper part of the
displacer cylinder V is of very simple construction dispensing with all valves. The
foot of the oscillating pump is provided with projections as shewn at Figs. 1
and 5, which replace the valves when the pump is in action, by alternately
compressing and thus closing the flexible suction and delivery pipes ss. The
projection acts on the suction pipes and the position shewn on the drawing is
the commencement of the suction stroke, the projection ¹, having compressed
the delivery pipe s¹.
Fig. 6 shews another very simple construction of pump particularly suited for the
present purpose. The valves for this double acting pump are formed by cup leathers.

page_text: The piston h is provided with the cup leathers ii which act alternately as suction and
pressure valves, other pressure valves formed of cup leathers n n being provided in a
lateral chamber. The action of this pump will be readily understood without further
description.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what 1 claim in
respect of caloric engines of the kind herein referred to is:
1-The use of a lever fastening for readily fixing and removing the fire pot to and
from the displacer cylinder, consisting of a lever a pivotted to the upper end of the
pot and having pins & b which on raising the lever, bear upon the inclined surfaces of
recesses in the framing and thus press the pot firmly against the displacer cylinder,
substantially as herein described.
2-Arranging the working cylinder A as a fixed cylinder instead of an oscillating
cylinder, for the purposes set forth.
3-Constructing the circulating pump without valves, projections'k at the foot of
the pump being made to compress and close alternately the suction and delivery pipe,
substantially as herein described.
4-Constructing a double acting pump with two cup leathers ii on the piston /
constituting alternately suction and pressure valves, in combination with two cup
leathers n n acting as valves in the pressure chamber of the pump.
1333
ABEL & IMRAY,
Agents for the Applicant.