Improvements in Transmitting Reciprocatory into Rotary Motion and in Apparatus therefor.
Year: 1887

page_text: Date of Application, 5th Oct., 1887
Specification Accepted, 8th Nov., 1887
Improvements in Transmitting Reciprocatory into Rotary Motion
and in Apparatus therefor.
I OTTO NEUHAUSER Manufacturer of Pforzheim Great Dukedom of Baden 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 for its object improvements in transmitting the reciprocatory
motion of steam and other engines or motors into rotary motion and in the apparatus
and method of carrying out this object whereby is obtained the more advantageous
transmission of the motive power imparted to a connecting rod (or other part of an
engine or machine) having a to and fro motion to a rotating piece of machinery, such
as is usually effected by means of a crank or cranks.
And in order the better to explain my present invention so that it may be easily
understood, and readily, carried into practice I will proceed to describe the same with
reference to the accompanying drawings.
Over two spur wheels or rollers A and A' Figure 1 or E E¹ Figures 5 and 6 runs
an endless chain B or a flexible band F with which chain or band is connected or
jointed a connecting rod C or other piece of machinery having a to and fro motion.
The connection of these parts as shewn in Figures 1 to 4 is effected in such a
manner that the chain B is attached on both sides to the projecting ends D¹ of the
pin D formed like a chain link and is so arranged as to turn freely in the head C¹ of
the connecting rod thus forming an endless chain.
In Figures 5 and 6 the pin G G which is connected at its end G₁ with the
connecting rod is hollowed out according to the convexity of the roller E or E' and
the flexible band F is connected with the pin G by screws or in some other
suitable way.
As shown in Figures 1 to 3 the chain is formed of inner links b and outer links b₁
which surround the former like a clasp and are connected therewith by bolts 62 the
rollers A A¹ gear into the intermediate spaces b³.
In the arrangement Figures 5 and 6 the flexible band is provided at fixed equal
distances with round or other shaped holes e in which pins el on the circumference of

page_text: one or both the rollers E E¹ gear so that when the connecting rod moves the
rollers E E' rotate.
The head of the connecting rod at each stroke of the piston is moved to and fro
from the position at a of the roller A or f of the roller E with the chain B or band F
to the outermost position a¹ of the roller A' or the outermost position f¹ of the
roller E. Power imparted thereto is thus transmitted to the chain or band and thus
to the rollers A A' or E E' respectively or to one of them only when the other only
serves as a guide pulley.
The great advantage thereby attained, is, that during the whole travel of the head
of the connecting rod from the moment when the rectilineal motion begins at a² or f
until it reaches a³ or f³ and similarly on the return travel from a or to a³ or f
the most advantageous and favorable application of power conceivable which where
rotating cranks are used only takes effect at two moments viz. :-when the crank is
perpendicular to the direction of the motion of the piston.
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. As a substitute for a crank in crank motions an endless chain or flexible band
carried over two rollers with which chain or band a connecting rod or other piece of
machinery. having a to and fro motion is linked in such a way that motive power
imparted therefrom to the chain or band serves to rotate the rollers.
2. The connection (referred to in Claim 1) of an endless chain with a piece of
machinery having a to and fro motion, in such a manner that the chain is locked on
both sides on the projecting end D¹ (Figures 2 to 4) of the pin D formed as a chain
link which pin rests and revolves in the head of the connecting rod substantially as
described and shown in Figures 1 to 4 of the drawings annexed.
3. The connection (referred to in Claim 1) of an endless flexible band F with a
piece of machinery having a to and fro motion in such a manner that the chain is
locked on both sides on the end G of the pin G G which is hollowed out according
to the convexity of the rollers E E¹ which pin rests and revolves in the head of
the connecting rod substantially as described and shown in Figures 5 and 6 of the
drawings annexed.
Datad this 5th dov of Outobon 1997