Improvements in Devices for Converting Motion.
Year: 1892

page_text: being date of first Foreign Application (in 7th Jan., 1892
United States of America),
Date of Application (in United Kingdom), 15th June, 1892
Complete Specification Left, 29th Aug., 1.92-Accepted, 1st Oct., 1892
United States of America),
Date of Application (in United Kingdom), 15th June, 1892
Complete Specification Left, 29th Aug., 1.92-Accepted, 1st Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Devices for Converting Motion.
I, MORTEN CHRISTEN WILSON of 398 Highland Avenue, Malden, in the State
of Massachusetts, United States of America, Photographer, do hereby declare the
nature of this invention to be as follows:-
My invention is an improved device for transferring or converting the motion
of a rocking shaft into the continuous rotation of a driving shaft with increased
power.
One object of the invention is to convert the motion of the rocking shaft into the
rotation of a driving shaft substantially at right angles thereto in such a manner
that the amount of friction shall be reduced to a minimum and the parts be as few
in number as possible, thus lessening their liability to breakage.
Another object is to convert the motion of a rocking shaft into the motion of a
driving shaft in such a mauner that all liability of a dead centre shall be removed
and the driving shaft may be started with ease whatever be its position when at
rest.
A further object is to provide means to prevent the backward movement of the
driving shaft in starting the same.
My invention can be carried out in the following way:
Beneath the shaft which it is desired to drive and at substantially right angles
thereto is journaled a rocking shaft which carries a cross bar rigidly connected
therewith and provided with pedals or foot rests or other means for rocking the
rock shaft, to which is also pivoted an oscillating bar connected with the cranks of
the shaft to be driven.
When the shaft is rocked the oscillating rod is tilted, each end being alternately
raised and lowered, and the connections between the ends of the oscillating rod and
the cranks of the driving shaft pull and push upon the said cranks, thus causing
the driving shaft to rotate, the oscillating shaft swinging upon its pivoted con-
nection with the rocking shaft as the cranks swing around in the rotation of the
driving shaft.
2
11
1
In order to remove all liability of a dead centre and to enable the driving shaft
to be started without regard to the position of the cranks thereof when at rest, I'
prefer to form the connections between the ends of the oscillating bar and the
cranks of the driving shaft with an angular bent portion or boxing which is formed
in two portions, adapted to be held together, with their ends embracing the cranks
of the driving shaft. Between their other ends, which are bent downwardly at
approximately right angles to the main portion of the boxing, is secured a rod
capable of slight pivotal movement. The lower end of this rod is pivotally secured
to the end of the oscillating bar by forming a hole or opening in the side of the
rod, which hole is slightly larger than and adapted to receive the end of the
oscillating bar rounded upon its upper side. It has a V shaped concavity in its "
lower face, and into this V shaped concavity passes the conical end of a screw
:

page_text: seated in the end of the rod. This provides a pivotal connection between the rod
and oscillating bar which will allow but little friction and one which may be easily
adjusted to take up wear.
The oscillating rod is mounted upon the rocking bar forward of the driving shaft
a distance equal to the length of the horizontal arm of the angular connection.
This arrangement avoids all dead centres, and in whatever position the driving
shaft is left at the cessation of its movement it may be started again by rocking the
bar or shaft either in one direction or the other, the oscillating bar and angular
connections acting to draw upon the crank when it is in an elevated position, and of
course the other end of the oscillating bar will push upon the other crank a corre-
sponding degree. To further reduce friction as much as possible I have formed
holes or sockets in the brackets which support the rocking shaft, the ends of the
rocking shaft being adapted to fit within these holes. A V shaped concavity is
formed in the under side of the rocking shaft where it rests within the socket, and
the bar is supported by the screw passing through the under side of the bracket,
the conical point or end of the screw entering the V shaped concavity and
holding the end of the rocking bar firmly in place. By this means a bearing is
formed which will allow free pivotal movement, but the parts may be held
sufficiently tight to avoid all rattle and play and may be easily adjusted to take up
the wear.
In many classes of machinery it is desirable to prevent all danger of starting the
driving shaft in a reverse direction from that in which it is ordinarily driven, and I
have aimed to accomplish this by the spring-stops. These spring-stops are attached
to a support slightly in rear of the oscillating rod, and may consist of strips of
spring material having their ends bent upwardly to form a bearing surface on each
side of the rocking shaft. As the oscillating bar rises on one side in the movement
of the rocking shaft it comes against this spring bar and raises it until that portion of
the oscillating bar has reached its highest position, at which time the spring drops
behind the bar and prevents its return under any conditions. Should it be found
desirable, however, to reverse the movement of the driving shaft, the spring-stops
may be swung to one side out of contact with the oscillating bar.
Dated this 15th day of June 1892.
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Devices for Converting Motion.
I, MORTEN CHRISTEN WILSON, of 398 Highland Avenue, Malden, in the State
of Massachusetts, United States of America, Photographer, 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 :-
My invention is an improved device for transferring or converting the motion
of a rocking shaft into the continuous rotation of a driving shaft with increased
power.
One object of the invention is to convert the motion of the rocking shaft into the
rotation of a driving shaft substantially at right angles thereto in such a manner
that the amount of friction shall be reduced to a minimum and the parts be as few
in number as possible, thus lessening their liability to breakage.
Another object is to convert the motion of a rocking shaft into the motion of a
driving shaft in such a manner that all liability of a dead centre shall be removed
and the driving shaft may be started with ease whatever be its position when at
rest.
A further object is to provide means to prevent the backward movement of the
driving shaft in starting the same.

page_text: In the accompanying drawings, which illustrate an embodiment of my invention,
Figure 1 is a perspective view of the device.
Figure 2 is an enlarged sectional view of the bracket supporting the rocking
shaft.
Figure 3 is a sectional view of the preferred form of boxing and rod connecting
the oscillating bar with the cranks of the driving shaft.
Figure 4 is a sectional view illustrating the manner of connecting the rod with
the ends of the oscillating bar.
In the drawings, 1 is representative of the driving shaft of any piece of machinery
which it is desired to operate, this shaft being provided with cranks 2, 2. Beneath.
this driving shaft and at substantially right angles thereto is journaled the rocking
shaft 3, which carries a cross bar 4, rigidly connected therewith and provided with
pedals or foot rests 5, the bar and foot rests being representative of any desirable.
means for rocking the shaft 3.
6 represents an oscillating bar or rod pivoted upon the rocking shaft beneath the
driving shaft in such a manner that when the shaft 3 is rocked this oscillating shaft
will be tilted first in one direction and then in the other, but at the same time may
swing in a plane parallel with the longitudinal axis of the rocking shaft. The ends
of this oscillating shaft are connected with the cranks of the driving shaft by the
connections 7, which are formed in the manner hereinafter described.
When the shaft is rocked, it will be seen that the oscillating rod is tilted, each
end being alternately raised and lowered, and the connections between the ends of
the oscillating rod and the cranks of the driving shaft pull and push upon the said
cranks, thus causing the driving shaft to rotate, the oscillating shaft swinging upon
its pivoted connection with the rocking shaft as the cranks swing around in the
rotation of the driving shaft.
In order to remove all liability of a dead centre and to enable the driving shaft
to be started without regard to the position of the cranks thereof when at rest, I
prefer to form the connections between the ends of the oscillating bar and the
cranks of the driving shaft, as illustrated in Fig. 3, with an angular bent portion or
boxing 8, which is formed in two portions 9, 10, adapted to be held together, with
Between their
their ends, as at 11, embracing the cranks of the driving shaft.
other ends, which are bent downwardly at approximately right angles to the main
portion of the boxing, is secured the rod 12 by the bolt 13, passing through the.
parts 9 and 10 and allowing slight pivotal movement of the said rod 12. The lower
end of this rod 12 is pivotally secured to the end of the oscillating bar, as illustrated,
by forming a hole or opening in the side of the rod 12, which hole is slightly larger
than and adapted to receive the end of the oscillating bar, rounded upon its upper
side, as at 14. It has a V shaped concavity in its lower face, as at 15, and into this
V shaped concavity passes the conical end of a screw 16, seated in the end of the
rod. This provides a pivotal connection between the rod and oscillating bar
which will allow but little friction and one which may be easily adjusted to take
up wear.
The oscillating rod is mounted upon the rocking bar forward of the driving shaft
a distance equal to the length of the horizontal arm 7× of the angular connection 7..
This arrangement avoids all dead centres and in whatever position the driving
shaft is left at the cessation of its movement it may be started again by rocking the
bar or shaft either in one direction or the other, the oscillating bar and angular
connections acting to draw upon the crank when it is in an elevated position, and
of course the other end of the oscillating bar will push upon the other crank a
corresponding degree. To further reduce friction as much as possible, I have
formed holes or sockets-17 in the brackets 18, which support the rocking shaft, the
ends of the rocking shaft being adapted to fit within these holes. A V shaped
concavity is formed in the under side of the rocking shaft where it rests within the
socket 17, and the bar is supported by the screw 19 passing through the under side
of the bracket, the conical point or end of the screw entering the V shaped concavity
and holding the end of the rocking bar firmly in place. By this means a bearing.
i

page_text: is formed, which will allow free pivotal movement; but the parts may be held
sufficiently tight to avoid all rattle and play and may.be.easily adjusted to take
up the wear...
In many classes of machinery it is desirable to prevent all danger of starting the
driving shaft in a reverse direction from that in which it is. ordinarily driven, and I
have aimed to accomplish this by the spring stops 20. These spring stops are
attached to a support slightly in rear of the oscillating rod, and may consist of
strips of spring material having their ends bent upwardly to form a bearing surface
on each side of the rocking shaft. As the oscillating bar rises on one side in the
movement of the rocking shaft it comes against this spring bar and raises it until
that portion of the oscillating bar has reached its highest position, at which time
the spring drops behind the bar and prevents its return under any conditious..
Should it be found desirable however, to reverse the movement of the driving shaft,
the spring stops may be swung to one side out of contact with the oscillating bar.
To more particularly describe the action of the stops. it may be stated that the
arrow shown in full lines represents the path of the oscillating bar as it moves on
its pivot and is raised and lowered by the rock shaft.
It will be clear that this
movement will simply raise the stop until the oscillating bar slips from under it,
when the stop will return to normal position to be raised by the bar again. Should
the oscillating movement of the bar be reversed while in the position shown, the
dotted arrow will show the path of the bar relatively to the spring stop, and it will
be clear that this movement will bring the bar squarely against the end of the stop,
which under such contact acts as a rigid stop.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In combination, the rocking shaft, a bar arranged transversely thereof and
pivoted thereto to oscillate longitudinally of the rock shaft, the part to be driven,
and the connection from the transverse bar to said part, substantially as described..
2. In combination, the rocking shaft, a bar arranged transversely thereof and
pivoted thereto to oscillate longitudinally of the rock shaft, the crank shaft, and
the connections from said oscillating bar to the cranks of said shaft, substantially
as described.
3. In combination, the rocking shaft, a bar arranged transversely of the rock
shaft and pivoted thereon to oscillate longitudinally thereof, the part to be driven,
and the angular connection between the oscillating bar and said part, substantially
as described.
4. An oscillating bar pivoted upon a rocking shaft, connections between the ends
of the oscillating bar and the cranks of the driving shaft and means for preventing
the retrograde movement of the oscillating bar, substantially as described.
5. An oscillating bar mounted on a rocking shaft, connections between the ends
of the bar and the cranks of the driving shaft, and spring arms carried upon a
pivoted support and adapted to engage the oscillating bar and prevent the
retrograde movement thereof, substantially as described.
6. An oscillating bar mounted on a rocking shaft and connections between the
ends of the bar and the cranks of the driving shaft, such connections consisting of a
boxing having an angular extension, and a rod pivoted between the arms of the
extension, substantially as described.
Dated the 20th day of A 1905
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Applicant's Agent.