A New or Improved System of Piston Valves, applicable to Steam Engines or the like.
Year: 1895

page_text: Date of Application, 26th Apr., 1895
Complete Specification Left, 7th Jan., 1896-Accepted, 8th Feb., 1896
PROVISIONAL SPECIFICATION.
A New or Improved System of Piston Valves, applicable to Steam
Engines or the like.
I, ARTHUR BOLLINCKX of 30, Chaussée de Mons, Brussels in the Kingdom
of Belgium, Mechanician, do hereby declare the nature of this invention to be as
follows:
This invention relates to a new or improved system of opening and closing
devices replacing in steam and similar motive power engines the usual distributing
apparatus such as slide-valves, valves, cocks and the like.
This novel mechanism consists of a piston specially designed in such manner as
to reduce to a minimum the clearance and surfaces which tend to diminish the
efficiency of the motor by increasing the condensation, in the interior of the
cylinder.
In applying my invention to a steam engine cylinder, I provide in the
thickness of the cylinder ends one or more pistons to which a reciprocating
motion is communicated by any suitable mechanism. In the course of this
movement these pistons open and close orifices which are arranged around a
cylindrical passage in which the piston moves to and fro, the whole thus serving
as an inlet and outlet valve mechanism.
For the escape, I prefer to place one at least of the pistons very low down,
either on a level with the bottom of the cylinder or preferably somewhat lower,
in order to facilitate the discharge of the water of condensation which may be
present in the cylinder.
These pistons may if preferred be provided with rings to ensure their steam-
tightness.
I reserve the right of applying them to the admission as well as to the emission
of the steam.
A New or Improved System of Piston Valves, applicable to Steam
Engines or the like.
I, ARTHUR BOLLINCKX, of 30, Chaussée de Mons, Brussels, in the Kingdom
of Belgium, Mechanician, 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:-
My invention consists in the use as a movable valve of a piston the base of
which turned to the inside of the cylinder is in the same plane as the inner surface
of the cover at the moment when the steam enters the cylinder so that the
clearance and the cooling surface are reduced to a minimum.

page_text: The accompanying drawings represent the invention as applied to the escape of
steam and in this
Figure 1 is a longitudinal section of a cylinder.
Figure 2 is a transverse section on the line X Y.
Figure 3 is a transverse section on the line V Z.
The pistons A have a reciprocating movement in the cylindrical passages C
placed in the cylinder cover and around which are annular channels B opening
freely into the escape pipe E and engaging with the passages C by the openings D
so that referring to the two positions of the pistons represented in Figure 1 the
openings being uncovered by the piston. A on the left side the steam escapes
freely, whilst on the right side the pistou A closes these apertures. As in this
position the interior face of the piston is exactly on the same plane as the interior
surface of the cylinder cover the clearance at the moment of the admission of
steam is reduced to the minimum as well as the surface which has been cooled
during the preceding escape.
In order that the water carried into or condensed in the cylinder may be
discharged at each stroke of the piston I arrange the lower part of the sleeve C
at the same level or preferably a little lower than the bottom of the cylinder. The
pistons may be provided with packing rings, I may also apply them to the steam
inlets as well as to the outlets.
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:-
1. In a steam engine or other similar motor the employment, as valves for the
escape of the gas or vapour, of pistons the inner faces of which are at the
moment of the admission on the same plane as the cover or bottom of the cylinder
and which are actuated by a reciprocating movement in cylindrical passage, whose
axis is parallel to that of the main cylinder and which are placed at the same
level or a little lower than the lowest part of the cylinder and surrounded by
annular channels suitably provided with apertures for the escape of the gas or
vapour which escapes from the cylinder.
2. The application of the same system to the admission of gas or vapour into
motor cylinders..
Dated this 2nd dow of L1000
W. P. THOMPSON & Co.,
31, High Holborn, London, W.C., Patent Agents for the Applicant.