Improvements in or relating to Cylinder and Piston Motors or Engines.
Year: 1898

page_text: Date of Application, 5th Apr, 1898-Accepted, 20th May, 1898
COMPLETE SPECIFICATION.
Improvements in or relating to Cylinder and Piston Motors or
Engines.
A communication from FLAVIUS HAYOT, of 3, Rue de Coetlogon, Paris, in the
Republic of France, Merchant.
:
I, ALFRED JULIUS BOULT, of 111 Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, 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 :-
This invention relates to an engine or motor with 4 pistons, 2 of which work in a
vertical cylinder horizontally reciprocated by the other two, the 4 pistons transmitting
rotary motion to the driving shaft by means of a single-crank pin.
The accompanying drawing illustrates, by way of example, the application of the
construction according to this invention to a gas-motor.
Fig. 1 is a vertical longitudinal section.
Fig. 2 a vertical cross section.
Fig. 3 a plan view and
Fig. 4 an elevation.
A is a frame supporting the crank shaft B in bearings C. To the frame are
secured two uprights or standards in which are formed or to which are secured two
cylinders E E and 4 guides F F F F. Between the two standards D D is suspended
by means of guides G and pistons H H a movable cylinder J in which operate
pistons K K secured together by means of a plate or bar L. With the latter engages
the crank pin M. The result is that the 2 pistons K K by their reciprocating motion
cause the crank to rotate and at the same time move the cylinder J laterally in its
guides F F.
The driving fluid acts only on one face of the pistons, the other one being open to
the atmosphere. The fluid for the pistons K K arrives and escapes through inlets N
arranged respectively on and under the cylinder J. For the pistons H the fluid
arrives through openings O and escapes through openings P arranged at the side in
the covers (Fig. 4) of the cylinders. An opening Q in the wall of the cylinder J
enables the latter to move on the driving shaft B.
This arrangement of the engine with 4 pistons is more particularly applicable
where it is desired to avoid shocks as caused by explosions in gas and like engines.
This construction has also the advantage of overcoming dead points of a simple
construction owing to the pistons acting directly on the crank, and of requiring little
space in which to work. This is especially important in gas engines as it is possible
to obtain 4 consecutive explosions for each revolution of the crank.
In case of gas-engines the gas may pass to the pistons K K through 2 of the
chambers F F and escapes through the other two. The inlet is therefore on one side
of the machine and the exhaust on the other. The guides G are provided for this
purpose with passages in order to place the chambers F F in communication with
those N N on the cylinder.
The valve gear, regulating and ignition devices may be of any construction enabling

page_text: the 4 pistons to act successively and independently of each other, and may be arranged
as to enable them to be used all together or single as desired that is to say it may
be possible to work with either 1, 2, 3 or 4 pistons according to the work to be
performed.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I
claim is
1. A four-piston motor 2 of the pistons of which connected by a member affording
a bearing for and connection to the crank pin are arranged in a cylinder movably
supported in a fixed frame, said cylinder being provided with two lateral extensions
forming the pistons of two oppositely arranged cylinders substantially as
described.
2. A four piston motor comprising a double cylinder J with connected piston K
acting in the crank pin B said cylinder being laterally movable in guides and having
two lateral extensions H H forming the pistons of two oppositely arranged cylinders E
substantially as described.
3. The combination and arrangement of parts constituting the complete four
piston motor substantially as described or illustrated in the accompanying
drawings.