Improvements in Relief Motion for the Driving Gear of Machinery or Apparatus for the Manufacture of Artificial Fuel or other Plastic Materials.
Year: 1887

page_text: Date of Application, 22nd Jan., 1887
Complete Left, 21st Oct., 1887
Complete Accepted, 20th Jan., 1888
Improvements in Relief Motion for the Driving Gear of Machinery
or Apparatus for the Manufacture of Artificial Fuel or other
Plastic Materials.
We, JOHN ARTHUR YEADON, of 4, Albion Place, Leeds, in the County of York,
and ROBERT MIDDLETON, of Sheepscar Foundry. Meanwood Road, Leeds, in the
County of York, both Engineers, do hereby declare the nature of this invention
to he as follows :-
Our present Invention has reference to the same Machine for which we applied for
Protection on October 30th 1885, for two Improvements numbered 13064 and 13067
respectively, and consists in the Combination or Application of a Fly Wheel which is
loose on a shaft, through one or more arms of which wheel there are holes cast or
drilled, to suit corresponding holes in a metal boss or face plate which is keyed on
this shaft; such plate having on one part of its circumference one or more ratchet
teeth, or notches cast or cut in the circumference, which are made to work in con-
nection with a catch or pawl; or the ratchet wheel or plate may be keyed seperately
on any other part or position on the shaft independently of the fly wheel or face
plate the object of this combination being twofold, viz.. to relieve any sudden or
extreme strain or pressure which may be put on the machine; and to prevent the
machine from running in the reverse direction, and so getting a double charge of the
materials in front of the charging ram.
The Invention will be readily understood by reference to the accompanying
Drawings, where Fig. 1. represents side elevation, Fig. 2. end elevation, Fig. 3 plan
of the arrangement, and Fig. 4 view of the catch wheel notched instead of having the
tooth cast on.
:
A is the Bedplate of the machine B is the Pendulum or Rocking Lover, this
being attached by the double spring connecting rod C, to the pin fixed in the large
internal wheel D, in which works a pinion (not shown in the drawings) which is
keyed on one end of the driving shaft. E. The Fly Wheel F can be fitted in any
position on the shaft, but preferably at the end as shown, and is bored out to fit the
shaft but not keyed fast on it. Through one or more arms of the Fly Wheel, we cast
or drill holes as at G, which are made to correspond with similar holes in the face
plate H, this face plate being keyed or otherwise secured to the shaft E, so that the
face plate can be connected to any or all of the fly wheel arms by a bolt through each
arm, one only, or more of these bolts, being used in working, as may be found most

page_text: advisable. On the circumference of the face plate at 1 is cast a ratchet tooth, which
is designed to work in connection with the pawl or catch K swivelling on the pin L
and falling on the face plate H, being made heavier at that end. Or, the face plate
may be made with a notch cast or cut in as at R Fig. 4. Or, a seperate ratchet
or notched plate may be keyed on some other part of the shaft, and worked inde-
pondently of the face plate attached to the Fly Wheel. M M are adjusting screws by
which the stroke of the pawl can be regulated to prevent too much noise or concussion
by its falling on the body of the catch plate. A loose collar N can be fastened on the
shaft to prevent the Fly Wheel flying off the shaft when the bolts are sheared.
The action of this arrangement is as follows.-In those Machines where the power
or pressure is put on frequently and intermittently, the use of a Fly Wheel is found
very advantageous for the purpose of carrying the driving shaft over the centre, and
saving power. But in the event of any foreign substance getting into any part of
the machine, or other cause interfering with the proper working of the machine, if
the Fly Wheel were keyed fast on the shaft, the momentum of the Fly wheel would
increase rather than decrease any damage which might be done to the machine from
such causes.
We therefore make our Fly Wheel to be loose on the shaft, and not
keyed fast; but instead of this, we key the plate H to the shaft, and then connect it
to the Fly Whool by one or more bolts through the holes G; the diameter and
number of these bolts being proportioned to bo strong enough for the ordinary and
regular work of the machine, but not sufficient to withstand any extra or sudden
strain which may be put upon it; in which latter case the effect is to shear the bolt
or bolts G, and thus release the Fly wheel, which running loose on tho shaft, its
momentum is expended without causing any further damage to the machine.
The second advantage from this combination arises from the fact that sometimes
when the Fly wheel has sheared these small bolts, there is a tendency for the machine
to run the reverse way, either from the rebound, or from the weight of the connecting
rod C, in which case there is some danger of tho charging ram which works in the
box at the bottom of the pugmill P getting an extra or doublo charge of the
materials in front of it, and thus risking a breakage to some part of the machine. We
meet this difficulty in the following manner, viz., by casting on the circumference of
the face plate H a ratchet tooth as shown at I, or notch as shown at R, the shape
of which is such that so long as tho machine is running in the right direction, it only
raises the pawl K each time the shaft revolves; but as soon as the shaft revolves in
the opposite direction, the catch plate is caught and held by the pawl K. We claim
to fix the ratchet or notched wheel and pawl to any part or in any position on the
shaft, and independent of the face plate attached to the Fly Wheel, but we prefer to
fix it as shown in the Drawing, viz., as part of the face plate itself. In that case we
secure the collar N to the shaft to prevent the wheel running off.
It will be seen therefore that the action is twofold, viz., 1st any sudden or undue
strain on the machine is relieved by the shearing of the bolts at G ; and 2nd the
shaft is also prevented from running the reverse way and thus overcharging the
moulds.
We wish it to be understood therefore that what we claim in our Invention is as
follows:-
1st. The use of any Fly Wheel which is loose on any shaft in the Machine,
but connected by one or more bolts to any Face plate which is keyed fast on such
shaft.
2nd. The combination of such Fly Wheel and face plate with either a ratchet tooth
or notch cast in or on the circumference of the face plate itself; or some independent
or seperate ratchet or notched wheel or plate; either of which shall be fitted with
suitable pawl or catch to prevent the shaft running in the reverse direction.
Dated this 20th day of Janna 1907

page_text: COMPLETE SPECIFICATION.
Improvements in Relief Motion for the Driving Gear of Machinery
or Apparatus for the Manufacture of Artificial Fuel or other
Plastic Materials.
We, JOHN ARTHUR YEADON, of 4, Albion Place, Leeds, in the County of York,
and ROBERT MIDDLETON of Sheepscar Foundry, Meanwood Road, Leeds, in the County
of York, both Engineers, do hereby declare the nature of this invention and in what
manner the same is to be perforined, to be particularly described and ascertained in
and by the following statement:-
Our present Invention has reference in the first instance to the same Machine for
which we applied for Protection on October 30 1885 for two improvements numbered
13004 and 13067 respectively, and in the second instance to any other Machines or
Apparatus where the power or pressure applied is exerted intermittently instead of
continuously and consists in the Combination or Application of a Fly wheel which is
loose on a shaft, through one or more arms of which wheel there are holes cast or
drilled to suit corresponding holes in a metal boss or face plate which is keyed on this
shaft;
such plate having, if found desirable, on one part of its circumference one or
more ratchet teeth or notches cast or cut in the circumference, which are made to
work in connection with a catch or pawl; or the ratchet wheel or plate may be keyed
seperately on any other part or position on the shaft independently of the fly wheel or
face plate; the object of this combination being twofold, viz., to relieve any sudden or
extreme strain or pressure which may be put on the machine; and to prevent the
Machine from running in the reverse direction, and so getting a double charge of the
materials in front of the charging ram.
The Invention will be readily understood by reference to the Drawings accom-
panying our Provisional Specification where Fig. 1. represents side elevation, Fig. 2.
end elevation, Fig. 3. plan of the arrangement, and Fig. 4 view of the catch wheel
notched instead of having the tooth cast on.
A is the Bedplate of the machine; B is the Pendulum or Rocking Lever this being
attached by the double spring connecting rod C, to the pin fixed in the large internal
wheel D, in which works a pinion (not shown in the drawings) which is keyed on one
end of the driving shaft E. The Fly Wheel F can be fitted in any position on the
shaft, but preferably at the end as shown, and is bored out to fit the shaft but not
keyed fast on it. Through one or more arms of the Fly Wheel, we cast or drill boles
as at G, which are made to correspond with similar holes in the face plate H, this
face plate being keyed or otherwise secured to the shaft E, so that the face plate can
be connected to any or all of the fly wheel arms by a bolt through each arm, one only,
or more of these bolts, being used in working, as may be found most advisable. On
the circumference of the face plate at 1 is cast a ratchet tooth, which is designed to

page_text: work in connection with the pawl or catch K swivelling on the pin L, and falling on
the face plate H, being made heavier at that end. Or, the face plate may be made
with a notch cast or cut in as at R Fig. 4. Or a seperate ratchet or notched plate
may be keyed on some other part of the shaft, and worked independently of the face
plate attached to the Fly Wheel. M M are adjusting screws by which the stroke of
the pawl can be regulated to prevent too much noise or concussion by its falling on
the body of the catch plate. A loose collar N can be fastened on the shaft to
prevent the Fly Wheel flying off the shaft when the bolts are sheared.
The action of this arrangement is as follows: In those Machines where the power
or pressure is put on frequently and intermittently, the use of a Fly Wheel is found
very advantageous for the purposo of carrying the driving shaft over the centre, and
saving power. But in the event of any foreign substance getting into any part of
the machine, or other cause interfering with the proper working of the machine, if
the Fly wheel were keyed fast on the shaft, the momentum of the Fly Wheel would
increase rather than decrease any damage which might be done to the machine from
such causes. We therefore make our Fly wheel to be loose on the shaft, and not
keyed fast; but instead of this, we key the plate H to the shaft, and then connect it
to the Fly Wheel by one or more bolts through the holes G; the diameter and
number of theso bolts being proportioned to be strong enough for the ordinary and
regular work of the machine, but not sufficient to withstand any extra or sudden
strain which may be put upon it; in which latter caso the effect is to shear the bolt
or bolts G, and thus release the Fly wheel, which running loose on the shaft, its
momentum is expended without causing any further damage to the machine.
The second advantage from this combination arises from the fact that sometimes
when the Fly wheel has sheared these small bolts, there is a tendency for the machine
to run the reverse way, either from the rebound, or from the weight of the connecting
rod C, in which caso there is some danger of the charging rain which works in the
box at the bottom of the pugmill P getting an extra or doublo charge of the
materials in front of it, and thus risking a breakago to some part of the machine.
We meet this difficulty in the following manner, viz., by casting on the circumference
of the face plate El a ratchet tooth as shown at I, or notch as shown at R, the shape
of which is such that so long as the machine is running in the right direction, it only
raises the pawl K each time the shaft revolves; but as soon as the shaft revolves in
the opposite direction, the catch plate is caught and held by the pawl K. We claim
to fix the ratchet or notched wheel and pawl to any part or in any position on the
shaft, and independant of the face plate attached to the Fly Wheel, but we prefer to
fix it as shown in the Drawing, viz., as part of the face plate itself. In that case we
secure the collar N to the shaft to prevent the wheel running off.
It will be seen therefore that the action is twofold, viz., 1st any sudden or undue
strain on the machine is relieved by the shearing of the bolts at G, and 2nd the
shaft is also prevented from running the reverse way and thus overcharging the
moulds.
We wish it to be understood that although we have described the abovo chiefly in
its application to any Machine or Apparatus for the manufacture of Artificial or
Compressed Fuel we claim the use of the same as applied to any other Machine or
Apparatus where the power or pressure to be exerted is applied in an intermittent
manner and not in a continuous one, such for example as in Punching and Shearing
Machines, Rolling Mills etc.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is :-
:-
1st. The use of any Fly Wheel which is loose on any shaft in the Machine, but
connected to any Face Plate or Boss which is keyed fast on such shaft, by one or
more small bolts which we call shearing bolts, the strength of which shall be in
proportion to the power or pressure required to be exerted by the Machine, but so that

page_text: if any extra pressure is put on the Machine, more than is calculated upon and
allowed for, such bolt or bolts shall be sheared in two and allow the Wheel to run
loose on the shaft.
2nd. The combination of such Fly Wheel and face plate with either a ratchet
tooth or notch cast in or on the circumference of the faco plate itself; or some
independant or seperate ratchet or notched wheel or plates; citlier of which shall
be fitted with suitable pawl or catch to prevent the shaft running in the reverse
direction.