Improvements in Means suitable for Connecting the Piston Rods and Crank Shafts of Multiple Cylinder Engines.
Year: 1899

page_text: Date of Application, 21st July, 1899
Complete Specification Left, 2nd Oct., 1899-Accepted, 7th Apr.. 1900
Improvements in Means suitable for Connecting the Piston Rods
and Crank Shafts of Multiple Cylinder Engines.
I, ANDREAS RADOVANOVIC, of Rodetzkyplatz 41, Pilsen, Bohemia, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to modified arrangements of the known T-shaped
connecting rods used in marine engines (Fig. 1), the lateral arms a b which are
engaged by the piston rods, being removed towards the crank pin end of the connect
ing rod, whereby it becomes possible to have as many as six cylinders working in one
plane on one crank in a rational manner (Fig. 2).
Fig. 3 illustrates the arrangement diagrammatically. The point c of the connecting
rod engages the crank pin of the crank d, whilst the point e is guided by a link e p.
When the crank shaft is rotated the points f, g, h, i of the connecting rod describe
the closed curves shown. At these points the driving rods j, k, l, m of the several
cylinders are attached, whilst their direction may be any desired one-
The relative positions of the points f, g, h, i, to the crank pin as well as the lengths
-for instancen, o.
of the arms cf, cg, ch, c i can be chosen as desired within practical limits; and two
points may coincide. Instead of guiding the point e by means of the link ep an
ordinary straight guide may be used.
Connecting rods according to my invention are suitable for all cases where a
rectilinear oscillating motion of several piston engines working in one plane is to be
converted into a rotary motion and vice versa-consequently they are equally
applicable for driving engines (water, steam, gas, air, etc.) as for driven machines
(pumps, blowers, compressors, etc.).
In Figs. 4 to 10 inclusive several arrangements of the connecting rod are shown-
n Fig. 4 for two or possibly four cylinders; Fig. 7 shows a connecting rod with a
single side arm for two cylinders, Fig. 8 shows the arrangement of a connecting-rod
or three cylinders, Fig. 9 one for three, and Fig. 10 one for three or possibly
ix cylinders.
Figs. 4 and 6 show the use of the connecting rod in steam engines and do not
equire any further explanation. In gas engines with four-cycle cylinders, the
rrangement shown in Fig. 5 offers the advantage that for each half revolution. an
dmission can be attained if the valve gear is so regulated that the explosions occur
the cylinders in the succession, for instance I, II, III, IV. The cylinder 'I works
erefore during the travel of the pin f from I to 1, (see Fig. 3), immediately there-
ter the cylinder II works from 2 to II, the cylinder III follows from III to 3, and
ally the cylinder IV from 4 to IV. The arrows on the respective curves show the
rection of the motion. Each cylinder therefore works in succession during a half
volution; during the other three half revolutions the blowing-out, the suction, and
e compression occur.
Dated this (1ot dow of t
2000

page_text: Improvements in Means suitable for Connecting the Piston Rods
and Crank Shafts of Multiple Cylinder Engines.
I, ANDREAS RADOVANOVIC, of Rodetzkyplatz 14, Pilsen, Bohemia, 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:-
:-
This invention has reference to modified arrangements of the known T-shaped
connecting-rods used in marine engines (Fig. 1), reference being had to the draw-
ings filed with my Provisional Specification, the lateral arms a b, Fig. 1 which are
engaged by the pistons rods, are removed to the crank-pin end of the connecting
rod, whereby it becomes possible to have as many as six cylinders in one plane and
having their pistons working on one crank in a rational manner (Fig. 2).
Fig. 3 illustrates the arrangement diagrammatically. The point c of the connect-
ing rod engages the crank-pin of the crank d, whilst the point e is guided by a
link e p.
When the crank-shaft is rotated the points f, g, h, i of the connecting-rod
describe the closed curves shown. At these points the driving-rods j, k, l, m of the
several cylinders are attached, while their direction may be any desired one-for
instance n or o. When the crank d is in its dead centre position the points f, g, h, i
will be situated respectively at fo, go, hº, 2º. The positions of the points f, g, h, i in
relation to the crank-pin as well as the lengths of the arms cf, cg, ch, ci can be
chosen as desired within practical limits; and two points may coincide. Instead of
guiding the point e by means of the link e p, an ordinary straight line guiding device-
may be used.
Connecting rods according to my invention are suitable for all cases where a
rectilinear oscillatory motion of several piston engines working in one plane is to be
converted into a rotary motion and vice versa-consequently they are equally applic-
able for driving engines (water, steam, gas, air etc.) as for driven machines (pumps,
blowers, compressors etc.).
In Figs. 4 to 10 inclusive several arrangements of such connecting-rods are shown-
in Fig. 4 one for two or possibly four cylinders; Fig. 7 shows a connecting-rod
with a single-side arm for two cylinders; Fig. 8: shows the arrangement of a con-
necting-rod for three cylinders; Fig. 9 one for three; and Fig. 10 one for three or
possibly six cylinders.
Figs. 4 and 6 shew the use of the connecting-rod in steam engines and do not
require any further explanation. In gas-engines with four-cycle cylinders, the arrange-
ment shown in Fig. 5 offers the advantage that for each half revolution an admission
can be attained if the valve-gear is so regulated that the explosions occur in the
cylinders in, for instance, the succession, I, II, III, IV. The cylinder I works there-
fore during the travel of the pin f from I to 1 (see Fig. 3); immediately thereafter
the cylinder II works from 2 to II; the cylinder III follows from III to 3, and finally
the cylinder IV from 4 to IV. The arrows on the respective curves show the direction
of the motion. Each cylinder therefore works in succession during a half-revolution;
during the other three half-revolutions the blowing-out, the suction, and the com-
pression occur.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. A connecting-rod suitable for two or more cylinder engines, having lateral arms

page_text: at the crank-pin end adapted to be acted upon by the driving-rods of the several
cylinders.
2. The improved connecting rods constructed and arranged as hereinhefore described
with reference to and shown respectively in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6,
Fig. 7, Fig. 8, Fig. 9, and Fig. 10 respectively of the drawings filed with my
Provisional Specification.
Dated this 2nd day of October 1800.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agents for the Applicant.