Mechanism for Producing Oscillatory Motion.
Year: 1898

page_text: Date of Application, 15th Nov., 1898-Accepted, 11th Feb., 1899
COMPLETE SPECIFICATION.
Mechanism for Producing Oscillatory Motion.
I, RICHARD STRESEMANN, of No. 66, Köpnickerstrasse, Berlin, Gentleman 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:-
The novel feature of the present engaging and disengaging mechanism is the
peculiarity of its construction the object of which is to produce an oscillatory,
inotion by means of one or two cranks. This motion is intended to be practically
utilised in different ways.
Fig. 1 in the accompanying drawing is a horizontal section through the centre
of such an engaging and disengaging mechanism, showing the position of all the
parts when the two sliding rails are pushed farthest apart from each other.
Fig. 2 a similar section, showing the position of the parts, when the sliding
rails are pushed nearest together.
Figs. and 4 are views corresponding with these two sections, on the upper
plate A.
Figs. 5 and 5 show the two end positions of the connecting rods F F and the
interchangeable engagement of the ball shaped ends of these rods in the boxes
belonging to the three bridges.
Figs. 6 and 6 are plan views of the bridges ED E', by means of which the
position at the time of the parts in connection therewith may be understood.
Figs. 7 and 7 represent one of the two block or wedge pieces K, with the rollers
attached thereto in two views, one being a section, and on an enlarged scale.
Fig. 8 is a side view of the sliding rails I I with the balls N N and wheels M M
running therein and showing also the connecting rod P¹ and the position of a
wedge or block piece K.
Fig. 9 shows the arrangement of the two parts of the telescopic tube.
The apparatus which forms a connected whole consists substantially of two
plates AA lying one over the other and connected together by means of columns.
On these plates the various connected or combined parts are arranged.
The plate A is supported by columns, fixed to the plate A. In the middle of
the plate A are two bearing blocks, in which a shaft Cis seated. On this shaft a
bridge" or oscillating beam is fixed and to the right and left of the latter are
two loosely mounted bridges or oscillating beams E and E. At the two ends
of the shaft C is a single crank or two cranks placed opposite to each other and
which, in consequence of the swing-like motion of the bridge D fixed to the
shaft C, can be set in oscillation. Further, by reason of their weight and the
swinging motion, these cranks serve to a certain extent as balance wheels.
The motion of the fixed bridge D is effected partially in an automatic way by
means of a ball X which moves on one half of the bridge D, partially by means
of a mechanical contrivance on the upper plate A, the parts of which contrivance
are connected with one half of the bridge ) by means of two connecting rods F F
as well as by a lever rod H.

page_text: On the upper plate A¹ are arranged two sliding rails II resting on balls & 3,
the distance of which rails from one another can be varied by means of two flat
sided wedge or block pieces K K, seated on small rollers and adjustable on A, in
association with four springs d, acting from the outside on the sides of the sliding
rails I I.
About half way in the direction of their length, the sliding rails I I are bent
like a curve, and these bends or curves are as high as the path described by the
swinging of the half part of the bridge D, at the spot where the connecting
roda F Fare joined to the bridge.
On each sliding rail I runs a wheel and a ball N, which are connected together
by means of a rod 0; in addition to which the wheels M and M as also the balls N N
are connected with the shafts P 1" in such a manner that the wheels and rollers
can be easily pushed sideways on these shafts, according to the distance at the
time of the rails I I from one another.
The shaft P, with which the wheels M M are connected, is itself connected
in front (on the fore side) by rods F F with the half part of the bridge D, which
does not carry the ball X, whilst in the middle of P a telescopic tube is rotably
fixed. This tube serves to effect a connection between the axis of the balls Í
and the shaft P¹.
k
Underneath the plate A¹ in a suitable spot, a bearing or seating is provided
for a bent lever Q, the one arni a of which is connected with the lever rod H,
whilst the other arm b engages in a slot of the projecting piece or spur & belonging
to the wedge or block piece K. By moans of the swinging motion of the bridge I
the rod is raised and lowered, and by the arrangement of the bent-lever Q, the
backward and forward sliding on the plate A, between the sliding rails II of
the wedge or block pieces, which are connected together by means of the con-
necting rods R R, is brought about.
One end of each of the connecting rods F F which are rotably and adjustably
fixed to the ends of the shaft 1" outside the sliding rails II, is formed like a ball,
and is alternately surrounded (or enclosed) by one of the box-shape holders or
receptacles lying adjoining one another on the fixed bridge D or by one of those
on the loosely mounted bridges EE. This is effected in the following
manner: By means of the lever Q the wedge or block pieces K K are pushed
between the balls or rollers of the sliding rails I I, whereby the distance of the
rails from one another is increased. In order that with the rails I I, the wheels
and balls N thereon, may also be at a greater distance apart from one another,
the rods F F, connected in a suitable manner with the wheels M, must also move
apart from each other, the result and intention of which is, that, in the highest
position taken by the half bridges E DE, the ball-like ends of the rods FF,
which are adjustably seated on the shaft P¹, will be in the particular (or respective) 4
boxes attached to the bridge D), whereas, these ends leave these boxes again, in
proportion, (or according) to the increasing distance of the rails II from each
other, and are drawn into one of the corresponding boxes of the loose bridges E
or E'. This position is taken by the ball-like parts of F F, when the particular
(or respective) half bridges have assumed their lowest position.
50
The bridges E D E seated on the crank shaft C have certainly a similar swing-
ing motion, nevertheless these motions are not simultaneous; for instance, whilst
the two ball-shaped ends of the connecting rods F F are drawn out of (or away
from) the boxes belonging to the bridge D, the part of the bridge which has become
free is raised by means of a ball X sliding down (or running down) on the other
half bridge whereas the two ends of the loose bridges E E' are still held in a state
of rest by means of the ball-shaped ends of the connecting rods FF. If the
bridge D on this side has reached the highest position and meanwhile the ball-
shaped ends have entered the two boxes belonging to that bridge, this end of the
bridge will be depressed again by the connecting rods FF. In order, however, 55
that the lowering of the two freed bridges E E' may be effected at the proper
time, a square carrier W is provided on the fixed bridge D, which during the

page_text: falling of the fixed half-bridge D, grasps the adjoining half-bridges E E¹ at the
suitable moment and likewise presses them down.
The operation of this apparatus, in consequence of its whole general construction
is as follows:―
The balls N N are brought into the highest spot of the curve-like parts of the
aliding rails I I, illustrated in Fig. 2, and thus have a tendency, to push along the
almost horizontal path of II the wheels M M connected with them by means of
the connecting rods 0 0 and lying in front of them on the slide rails. "When this
is effected, the whole of the parts of the engaging and disengaging apparatus take
the positions illustrated in Fig. 1, and thereby bring about the half of the oscil-
lating motion of the cranks fixed to the shafts.
With the pushing forward of the wheels M M in conjunction with the rising of
the half of the fixed bridge D on which is an oblique path Z for the ball X, the
ball X has passed from the position represented in Fig. 2 to the height indicated
by dotted lines in Fig. 1 and, as, after the rising of this part of the bridge, a
decidedly narrowed obliquely arranged path exists, the ball X, by reason of its
own weight. will roll as far as the extreme or end point illustrated in Fig. 1, the
parts of the tube G telescoping into one another. After a short stay, only in conse-
quence of the gradually complete sinking of this half of the bridge and up to
the time when the ball shaped ends of the connecting rods FF have issued from
the boxes on the other half bridge D, the ball X acquires the tendency to roll down
on the now very oblique path, the tube G is extended to a certain extent during
Buch rolling and the wheels M reach the end position illustrated in Fig. 2. The
balls N N are at the same time forced up, on the highest point of the curve like
halves of the slide rails.
The weight of the rapidly descending ball X is to be determined in such a
manner that thereby the weights of the two balls N N which are to be forced up
as well as the resulting frictional loss shall be surmounted.
The suitable proportions of weight for the ball x and the balls N N may be
omitted from this specification as the object and adaptability of an engaging and
disengaging mechanism of the kind may be very varied, nor is any reference
made to the necessary driving power for this apparatus or the nature of such
power. On the other hand, the arrangement in the present construction is dis-
tinctly based on certain proportions of measurement, from which it can be
physically shown, that there is an increase of working power as compared with a
power for operating the engaging and disengaging mechanism, or an apparatus in
connection therewith.
The present construction of an engaging and disengaging apparatus is intended
to serve as an example of the practical value of this working power, amongst the
innumerable possible variations, as regards the choice of the proportions of the
measurements.
Assuming the course of the wheels M M on the running path to be equal to
15 units, the length of a connecting rod F from the middle of the ball-shaped
lower end to the middle of a wheel M being 25 units, then, if a line be drawn
from the middle point after the wheel M has completed its course (from the point
in Fig. 2 to that shown in Fig. 1) to the axis of the ball-shaped end part of F,
it will be seen that this line will stand at a right angle to the line of the travelled
course and will be exactly 20 units in length.
Thus, if the wheel M be set in motion in the reverse direction, in consequence
of applied power, a load attached to the axis of the ball-shaped part of the con-
necting rod, will be raised to the extent of 5 units. (This load is represented in
the present engaging and disengaging mechanism by the oscillating motion of the
cranks through the bridge.)
By the course described by the ball N of 15 units of length, a mechanism on
the engaging and disengaging apparatus is so adjusted that power is automatically
evolved thereby, which power can be utilised in the working of the engaging and

page_text: disengaging mechanism, whereas otherwise such power would have to be obtained
from the driving apparatus.
This evolution or development of force is based on the weight of the ball x in
falling, and is sufficient subject to suitable determination of the weights of the
balls N N and X to allow of the bridge D in riding at the axis of the ball-shaped
part of F to pass over a path or course of 5 units of length, the axis of the shaft
rotating at the same time.
By reason of this ascent of 5 units of length not only will the wheels M M be
again brought into the positions illustrated in Fig. 2, but the balls N N will pass
upwards over the curve-shaped course on I I.
This being effected, the ball X has come to the position of rest, on the other hand,
however, at this moment, the two balls N N have again the tendency to roll down
on the sloping path or course and to drive the wheels M M forwards, whereby the
bridge 1 is caused to perform backwards the just completed movement. Simul-
taneously herewith the ball, reaches, in the beginning of this collective or general
movement the position on the engaging and disengaging mechanism, in which
the automatic development of power can set in.
By means of this raising and lowering of the bridge D) which is firmly connected
with the shaft C, the swinging motion of two (or merely of one) cranks attached
to C is effected.
In order, however, to render possible an effective exercise of power on the
mechanism by the rolling down of the ball X on the oblique path, this ball when
it acquires the tendency to roll down, must also be free in order to gather force.
For this purpose, the end of the bridge lying opposite to the ball, and which was
brought into the lowest position by means of the guiding rods, need no longer be
held fast there must be an alternative or exchange of the points of pressure with
which the guiding rods come into contact, in the two boxes of the bridge D to
the points of tension in the boxes of the bridge E.
For this purpose the wedge or block pieces E E connected together by means
f RR, are arranged, which upon the rising and falling of the one half of 1, are
pushed between the slide rails II by the engaging of the lever rod H and the
double lever Qin a pin or projection of the part K, or drawn out again.
Since the wheels M and M run on I I they also must take like distances apart
from one another, and as the connecting rods F F are attached to the shaft I in
such a manner that when the rails M M are pushed they are pushed to the same
extent, the lower ball-like ends of the connecting rods F F will also be displaced
in the boxes on the bridges ED E, and thereby alternately, (according to the
height or depth of the course taken by the bridge) force down the fixed bridge D
or draw up the two bridges E E¹.
Hence, however, results firstly, the setting free of the ball X and the gathering
of a force in the rolling down of the same on the path Z and, secondly, that by
the result of this collection of force, the balls N N made in corresponding propor-
tions in regard to weight, are drawn along the curve-shaped elevation of II, in
order to automatically drive the wheels M M in the opposite direction to that of
the course meanwhile covered by the same, and thereby to effect the lowering of
the half bridge of D.
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. An engaging and disengaging apparatus, the distinguishing feature of which
is a bridge D, fixed to the shaft C, and two bridges E E' loosely mounted and move-
able around the said shaft, which bridges, by means of connecting rods F F, are
united with two running or rolling wheels M M, which run on adjustable slide
rails II, on a plate A arranged above the bridges as well as with balls N N
connected with the wheels, so that in the case of a rolling motion being set up,

page_text: the axis of the wheels pass over a partial course of three units of an entire course,
whilst the connecting rods F F with a length of five units of the course, after the
covering or travelling of the course by the wheels M M, assume a position at a
right angle to the line of this course and the axis of a suitably arranged apparatus
connecting the rod FF with the fixed bridge D, is lowered to the extent of a unit
of the course or is raised, if the direction of the course be reversed.
2. In an engaging and disengaging mechanism, as described under Claim 1 an
arrangement, as may be preferred, for the purpose of ensuring the adjustability of
the slide rails II and the interchangeable character of the connecting of the con-
necting rods F F on the one hand with the two loose bridges E E¹ in the lowest
position of the same and the other hand with the fixed bridge D in the highest
position.
3. In engaging and disengaging mechanism as described under Claim 1, the
arrangement of a sloping running path Z on one half of the fixed bridge D, as
well as the curve-like form of the slide rails II and the connection of the ball x
running on the path Z, and on the curve-like formed parts with the balls N N by
means of a telescoping tube C and of the rods O with the shaft P¹ of the running
wheels M M.
4. The application of the proportions of measurement. specially referred to in
Claim to an apparatus forming a complete whole in itself, which is intended
for producing an oscillating motion.
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., For the Applicant.