s
Year: 1894

page_text: I, EUSTACE ERNEST WIGZELL, of Billiter House, Billiter Street, London E.C.,
Engineer, do hereby declare the nature of this invention to be as follows:-
In my improved engine I place two or more cylinders at right angles to the
crank shaft, and in each cylinder I use two pistons working in opposite directions
to each other, in connection with T shaped connecting rods, or triangular shaped
connecting rods.
1, EUSTACE ERNEST WIGZELL, of Billiter House, Billiter Street, London, E.C.,
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 :-
In my improved engine I place two or more cylinders at right angles to the crank
shaft, and in each cylinder I use two pistons working in opposite directions to
each other, in connection with T shaped connecting rods, or triangular shaped
connecting rods.
In the drawings annexed hereto I show in Fig. 1 an elevation of the construction,
in my improved manner, of a triple expansion engine with three cylinders A. B. C.
placed at right angles to the crank shaft D., in each of these cylinders I have two
pistons E and E, F and F', and G and G', these pistons working in opposite directions
to each other in each cylinder. The piston rods shown H. H. H. of the three
bottom pistons E. F. and G pass through stuffing boxes I. I. I. at the bottom of the
cylinders and are connected to guide blocks J. K. L. The two outside guide
blocks J. and L are joined by short links M and N, to a T shaped, triangular
shaped, or any convenient shaped connecting rod or rods, provided that these two
working centres and the centre of the crank if joined together by a line would
form a triangle; this connecting rod is shown B' in the drawing, the centres being
shown at O. P. and Q¹.
The centre guide block K is connected to the connecting rod direct at Q, and
the apex of the T or triangular shaped connecting rod B1 is connected to the
centre crank of a three throw crank shaft as shown at R in Fig. 2.
The top pistons E F and G¹, have their piston rods S. S. S. passing through
stuffing boxes T. T. T. in the top cylinder covers and at the top end of these piston
rods there are crossheads U. V. and W.
The crosshead V belonging to the piston E' is also shown in drawing Fig. 2.
connected by rods X. X. which pass on each side of the cylinder A., to guide
blocks Y. Y. and then by means of the middle centres of T shaped or triangular
shaped connecting rods A' A' to the cranks Z. Z.

page_text: These connecting rods are also shown in Fig. 1 at A' one of them being on each
side of the middle T, or triangular shaped connecting rod B'.
The two crossheads U. and W. in Fig. are connected by connecting rods (the
end of one of which can be seen at C¹) which run down each side of the cylinders B.
and C. to the T or triangular shaped connecting rod A' Fig. 1. and A' A¹ Fig. 2.
joining same at the ends D' and H Fig. 1. which work on each side of the T, or
triangular shaped connecting rod shown B' Figs. 1 and 2. and on to the two
cranks Z. Z. Fig. 2 so that when the crank R. Fig. 2 is at its top centre, and the
cranks Z. Z. are at their bottom centres all the pistons are then in the centre of
their cylinders A. B. and C.
In Fig. 2. I show a method of opening and closing the admission of steam and
the exhaust. For this purpose I prefer using a piston valve as at A² with three
pistons B2, C², D2, the valve being shown with the steam passing in at E² in
between the two pistons E and E' whilst the exhaust from the top and bottom of
these pistons is passing out at F2 F2, but it must be understood that I do not confine
myself to any particular kind of piston valve, slide valve, or Corliss valve, or to
any particular method of working the valves for the inlet and outlet of steam to
the cylinders A. B. and C. but it is understood that for working these valves and
to keep same uniform with the pistons I can use a T or triangular shaped connecting
rod, similar to the connecting rods of the engine, working on an eccentric instead
of a crank, the eccentric being made to change its centres on the shaft for
reversing; or an ordinary link motion can be adapted, or in the case of stationary
engines three separate eccentrics can be used; or for reversing two separate
eccentrics can be used for each cylinder with link motion.
The advantages of such an engine as described are, perfect balance, the up and
down strains being equalised violent vibrations are overcome, a uniform power
throughout the revolution of the crank, high speed, smaller diameter of cylinders
for any given power, less space occupied and working parts reduced; a single
triple expansion engine, built on ny improved principle, being equal to six
cylinders.
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 I
claim is :-
:-
1. The improved steam engine substantially as described and shown in drawings.
2. In a steam engine the combination of two pistons in each cylinder, such
pistons working in opposite directions to each other, with a connecting rod or rods
made shaped, or triangular shaped, or in any such way that if the crank centre
and the two outer working centres of the connecting rod or rods were joined together
by a line it would form a triangle.
3. In a steam engine the use of two or more cylinders placed in a line at right
angles to the crank shaft each cylinder having two pistons working in opposite
directions to each other and connected to T shaped or triangular shaped connecting
rod or rods, substantially as described and shown in drawings.
Dated this 19th day of July 1895.