Improvements in and connected with Fluid-pressure Engines.
Year: 1890

page_text: Date of Application, 29th Nov., 1890.
Complete Specification Left, 27th Aug., 1891-Accepted, 3rd Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Fluid-pressure Engines.
I, JOSSE EGIDE SPANOGHE of Cappelle, Antwerp, Belgium, Engineer, do
hereby declare the nature of this invention to be as follows:-
groove.
This invention consists in the employment of a shaft provided with a central
enlargement or core having a diameter of about half that of the cylinder and on
the surface of which is formed a helicoidal groove consisting of a thread thereon
composed of two parts joined at their ends one of which represents a half turn
of the right screw and another a half turn of the left screw.
Into this groove a
cylindrical bowl projects, having a diameter slightly less than the width of the
This bowl is located in the piston which is composed of two parts coupled
by means of bolts and each part having a cylindrical prolongation or trunk
having an internal diameter so that the enlargement may freely rotate in it. The
enlargement thus rotates in what may be called a trunk piston. To prevent the
piston from turning in the cylinder it is provided with a groove at the part where
the piston flanges are bolted together with packing between; this groove works on
a guide feather fixed in the interior of the cylinder and acts as a guide to the
piston. When the piston is driven in one direction by the steam it travels the
whole length of the cylinder and the bowl taking into the groove in the enlarge-
ment or core causes the latter to make a half revolution; then being driven by the
steam in the other direction it makes a second half revolution so that a single to
and fro movement of the piston produces an entire revolution of the enlargement
and consequently of the shaft of which it forms part.
Dated this 20th day of November 1890.
COMPLETE SPECIFICATION.
Improvements in and connected with Fluid-pressure Engines.
1, JOSSE EGIDE SPANOGHE, of Cappelle, Antwerp, Belgium, 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 :-
The object of my invention is to obtain a motive power engine of greater
simplicity than heretofore, in which the piston rod, connecting rod, crank, and
crank shaft, are dispensed with.
And in order that my invention may be understood I will describe same with
reference to the accompanying drawings, in which
Figure 1 is a sectional side elevation, and Figure 2 a sectional end elevation of
a motive power engine constructed in accordance with my said invention.
This invention consists in the employment of a shaft A. provided with a central
enlargement or core B having a diameter of say about half that of the cylinder;
on the enlarged part B held by nuts C, there is a sheath D in which is formed a
helicoidal groove E consisting of a thread thereon composed of two parts joined
at their ends, one of which represents a half turn of the right screw and another
a half turn of the left screw. Into this groove E a bowl G projects, having a
diameter slightly less than the width of the groove. This bowl G is located in
the piston which latter is composed of two parts I and J coupled by means of bolts,
[Price Bd1

page_text: and each part having a hollow cylindrical prolongation or trunk S S having such
an internal diameter that the enlarged part B D may freely rotate in it. The
enlarged part B D thus rotates in what may be called a trunk piston. To prevent
the piston from turning in the cylinder it is provided with a projecting part M at
the point where the piston flanges are bolted together and with packing piece N ;
this projecting part M works in a guide .groove P formed in the interior of the
cylinder acting as a guide to the piston. When the piston is..driven..in one
direction by the steam, it travels the whole length of the cylinder, and the bowl G
taking into the groove in the enlarged part or core B D causes the latter to
make a half revolution, then the piston being driven by the steam in the other
direction it causes the enlarged part B D to make a second half revolution so that
a single to and fro movement of the piston produces an entire revolution of the
enlarged part B D and consequently of the shaft of which it is fixed to or forms
part.
The advantages of this new system may be summed up in the following.
1. Considerable diminution in the price of construction.
2. Maintenance is easier and less costly.
3. Exemption from breakage of the parts thus avoiding stoppages and cost of
repair.
4. Important increase in power and speed while the largest machines can work
to 250 revolutions per minute.
5. The machine may be single acting, double compound with simple double
or triple expansion.
6. The cylinders with their steam distribution, pistons and shafts not cranked of
old machines can be utilized in the construction of these new machines.
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 :-
:
:-
First In motive power engines, the shaft A. with enlarged part B D and having
formed therein a helicoidal groove E all substantially as described and shown on
the accompanying drawings.
Second In motive power engines, the pistons composed of two parts I J with
hollow cylindrical prolongations or trunks S S, and bowls G all substantially as
described and shown with reference to the accompanying drawings.
Third: In motive power engines, the cylinder formed with slot P whereby
rotation of the piston is prevented as set forth.
Fourth: In motive power engines, the bowl G located between the two halves I J
of the piston for rotating the shaft A through the helicoidal groove E in the enlarged
part B D. of the said shaft as set forth.
Fifth The general arrangement, construction and combination of parts com-
posing my improved motive power engines all substantially as described and
illustrated with.reference to the accompanying drawings together with any mere
modification or modifications thereof.
Dated this 27th day of Amount 1001