Improvements in Gear for Regulating and Reversing Steam or other.Fluid Pressure Engines and for Controlling the Brake of Winding or Hauling or other Engines.
Year: 1897

page_text: Date of Application, 9th Jan., 1897
Complete Specification Left, 9th Oct., 1897-Accepted, 11th Dec., 1897
PROVISIONAL SPECIFICATION.
Improvements in Gear for Regulating and Reversing Steam or other.
_Fluid Pressure Engines and for Controlling the Brake of Winding
or Hauling or other Engines.
We MICHAEL WATSON of 5 Ashfield Terrace East in the City and County of
Newcastle on Tyne Engineer and JACOB GOWLAND JOICEY of 30 Bewick Road
Gateshead in the County of Durham Engineer do hereby declare the nature of this
invention to be as follows:-
Our invention is an improved arrangement of mechanism for regulating and
reversing steam or other fluid pressure engines or for controlling the brake of winding
or other engines and is as follows
Our invention is an improved arrangement of mechanism for regulating and
reversing steam or other fluid pressure engines, or for controlling the brake of winding
or other engines, and has for its object the relief of the engine attendant in the
application of power, and also securing greater rapidity of action, and more efficient
and definite application of the power, than is usually attained by present methods.
Our improvement consists in using two cylinders with reciprocating piston and
rods, which may be placed in any suitable position relatively to each other, and
having a proper connection between the two piston rods."
We prefer to place them tandem, and the description following is for that arrange-
ment, but it must be understood that we do not therefore confine ourselves to that
arrangement exclusively.
One cylinder is used as the power cylinder, to which steam or other fluid under
pressure is admitted at either end as required, the second cylinder is supplied with
oil, or other fluid, and acts as a lock, or regulator, controlling and determining the
movement of the power piston through the rod or rods, which in this arrangement
are in a straight line.
The piston rod is connected to the reversing gear or brake gear of the engine by
suitable connections, so that the movement of the piston rods, communicates the
necessary movement to the link or radius rod for reversing, er the band, or blocks, or
girders, for brake power.
The valve for controlling the admission of steam or other fluid under pressure to
the power cylinder, may be either of the ordinary D form or a piston or other form of
valve; a piston valve is preferably used for covering the ports of the locking cylinder,
but other suitable forms may be used.
The admission valve to the power cylinder, and the locking valves to the locking
cylinder, are connected by rods or other suitable connections, so that the two valves
move uniformly.
The valve rod is connected to one end of a lever, the other end of this lever being
connected to the crosshead, piston rod, or to some part which receives its movement
from the piston rod either directly, or by suitable intermediate levers and
connections.
At a suitable intermediate point on this lever we attach another lever controlled
by the engine attendant.

page_text: The action of this arrangement is as follows :-
When the attendant moves the hand or treddle lever under his control, it moves
the valves of the power cylinder, and locking cylinder, by the intermediate con-
nections with the main lever which is then fulcumed by the crosshead or piston
rod; a movement of the piston in both cylinders follows, the oil or other fluid being
forced from one end of the locking cylinder and taken in at the other, this movement
of the pistons, gives a corresponding movement to the end of the main or controlling
lever, which is then fulcumed by the lever in the hands of the attendant, and the
valves are drawn back by the movement of the pistons, to a position covering the
ports, and all further movement is arrested until a further opening of the valves by
the attendant takes place, and these operations may be continued until the desired
result is attained.
The movement of the pistons therefore iminediately follows, and is almost indentical
with that of the hand lever.
Various arrangements of levers can be made to secure the desired result, the
essential action of the gear being, that as soon as the attendant opens the admission
valve, the resulting movement in the power cylinder itself closes the valves of both
the power cylinder and locking cylinder through the connections, thus locking the
whole gear in that position.
Where a liquid under pressure is available, only the cylinder called the locking
cylinder need be used.
LOLL
Tanna 1907
Improvements in Gear for Regulating and Reversing Steam or other
Fluid Pressure Engines and for Controlling the Brake of Winding
or Hauling or other Engines.
We MICHAEL WATSON of 5 Ashfield Terrace East in the City and County of
Newcastle on Tyne Engineer, and JACOB GOWLAND JOICEY of 30 Bewick Road
Gateshead in the County of Durham 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 :-
Our invention is an improved arrangement of Mechanism for controlling the
brake of Winding or other engines and may be used for reversing steam or other
fluid pressure engines. It has for its object the relief of the engine attendants in
the application of power and also securing greater rapidity of action and more
efficient and definite application of the power than is usually attained by present
methods.
Our Improvements consist in using two cylinders with reciprocating pistons and
rods, which may be placed in any suitable position relatively to each other, and having
a proper connection between the two pistons.
We prefer to place them tandem and the description following is for that
arrangement but it must be understood that we do not therefore confine ourselves to
that arrangement exclusively.
One cylinder is used as the power cylinder to which steam or other fluid under
pressure is admitted at either end as required.
The second cylinder is supplied with oil or other liquid and acts as a lock or
regulator, controlling, and determining the movement of the power piston through
the rod or rods which in this arrangement are on one axis.

page_text: The piston rod is connected to the brake gear of the engine by suitable connections,
so that the movement of the piston rod communicates the necessary movement to
the band, strap, block, or girders used for the brake.
The valve for controlling the admission of steam or other fluid under pressure to
the power cylinder, may be of the ordinary D form or a piston valve or other form.
A piston valve is preferably used for covering the ports of the locking cylinder,
but other suitable forms may be used in which case the connections must be made
suitable for the valves.
The admission valve to the power cylinder and the locking valves to the
locking cylinder are connected by rods or other suitable connections so that the two
valves move simultaneously.
The valve rod is connected to one end of a lever, the other end of this lever being
connected to the cosshead or piston rod, or to some part which receives its movement
from the piston rod either directly or by suitable intermediate levers and
connections..
At a suitable intermediate point on this lever we attach another lever controlled
by the engine attendant.
The action of this arrangement is as follows.-When the attendant moves the
hand lever or treddle under his control, this action moves the valves of the power
cylinder and locking cylinder by the intermediate connections with the main lever
which is then fulcumed by the crosshead or piston rod; a movement of the piston
in both cylinders immediately follows, the oil or other liquid being forced from one
end of the locking cylinder and taken in at the other, this movement of the pistons
gives a corresponding movement to the end of the main or controlling lever which is
then fulcrumed by the lever controlled by the attendant and the valves are drawn
back by the movement of the pistons, to a position covering the ports and all further
movement is arrested until a further opening of the valves by the attendant takes
place and these operations may be continued until the desired result is attained.
The movement of the pistons therefore immediately follows and is almost
simultaneous with that of the foot or hand lever.
Various arrangements of levers can be made to secure the desired result. The
essential action of the gear being, that as soon as the attendant opens the
admission valve, the resulting movement in the power cylinder itself closes the valves
of both the power cylinder and the locking cylinder through the connections, thus
locking the whole gear in that position.
Where a liquid under pressure is available, only the cylinder named the
locking cylinder need be used. The valves acting both for the admission of the
liquid under pressure and when closed for locking the cylinder.
The various ports may be of any suitable material and the arrangement varied to
suit any particular case.
In the drawing No. 1. fig 1 is a sectional elevation of the power cylinder, the
locking cylinder and the valves and mechanism connected therewith. In which A is'
the hand lever working on a fulcrum and connected at its lower end by links B to a
differential lever C the lever C having at its lower end a fulcrum pivotted at a suitable
point on a bracket S which is attached to the piston rod R R on which is fixed the
piston P of the power cylinder Q as well as the piston M of the locking cylinder N.
The upper end of the differential lever C is connected by links to the
valve spindle D D which is prolonged through the steam chest of the power cylinder Q
and into the oil chamber or tank L of the locking cylinder N.
Fixed upon the spindle D there is a slide valve E working over the supply ports F & G
and over the exhaust port X regulating the supply of steam or other Huid to or from
the two sides of the piston P of the power cylinder Q.
On the prolonged port of slide spindle D in the tank or oil chamber L there are
two valves H & I working over the ports J and K for the purpose of allowing a free
circulation of the oil from or to the two sides of the piston M, of the
locking cylinder N, through the ports J & K, or of otherwise closing these ports

page_text: and so locking the piston M and with it the piston rod R and the connection T
leading to the brake strap or beam.
U is a treadle which may be used (instead of the hand lever A) connected to the
levers by bell crank V.
The handle A and mechanism is shewn in mid gear. The manner of working is
as follows.
Let the handle A be moved say in the direction of its arrow then motion will be
communicated from its lower end through links B to the differential lever C which
moving on its fulcrum on the piston rod bracket gives a forward motion to the
slide valve spindle D and the valves upon it. Thus the slide valve E is moved to the
full, or to some extent, opening the port F of the power cylinder to the pressure
whilst the port G is opened to the exhaust port X.
At the same time the valves of the locking cylinder N open the ports J & K, so
that the oil or other liquid may freely flow through these ports and thus the pressure
in the power cylinder is free to act on the piston P causing an outward movement
of the piston with the piston rod R and the connection to the brake beam, or strap
and carrying with it the lower end of the differential lever C.
When a slight movement of this lever has taken place it moves on the pin of the
link B as a fulcrum and moves the slide spindle D in the opposite direction to the
arrow until the ports F and G on the power cylinder and the ports J & K of
the locking cylinder are closed, thus shutting off the steam or other fluid to the
power cylinder and preventing any ingress or egress of oil to or from the
locking cylinder and stopping & firmly locking the gear in that position.
The motion may be continued again and again by successive movements of the
handle A until the requisite pressure on the brake drum be attained at which point
the locking cylinder will retain the apparatus in that position.
The reverse action of the apparatus is accomplished by moving in the same
nanner the handle A in the opposite direction.
Several different combinations of levers may be arranged to secure the result
described in the foregoing and by the drawing No 1 fig 1, one of which arrangements
is shewn in drawing No 2. figs 1 and 2.
Fig 1 is a side elevation and fig 2 a front elevation of levers D2, D3 and fulcrum
bracket D. In which A¹ is the hand lever, D+ the connecting link with lever D³
which towards the middle of its length is fulcrumed on lever D2 whilst at its lower
end it is connected with the lever C¹, by the link B¹.
The lever D2 is pivoted on the brackets D5 and having one end attached to lever D³.
and at the other end to the valve spindle D'.
The piston rod R' is attached to the lever C' and this lever communicates the
power from the piston rod R¹ through the axle or weigh bar C² to the brake strap or
girder.
U is a treadle which may be used (instead of the hand lever A¹) connected to the
levers by bell crank V1.
The cylinders may be arranged as those shewn in drawing No 1 or otherwise.
The handle A¹ and mechanism being in mid gear the manner of working is as
follows. Let the handle A' be moved in the direction of its arrow carrying with it
lever D³ which for the time being has its fulcrum on link B₁ so carrying with it
lever D2 which is hinged on a fixed bracket D5 thus moving the lower part of lever D²
in the opposite direction namely that shewn by the arrow at D₁ and moving the
slide valve spindle D¹ with it as shewn which is immediately followed by an admission
of steam to the power cylinder and with it the piston rod R¹ and the lever C¹ which
communicates this motion through link B' lever D³ and lever D² to the slide spindle D¹
and bringing it back to its normal or mid position and thus locking the apparatus as
in the former case.
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
The annligation of the machonism and anuertue anbotentiall..
1
1

page_text: the specification and drawings for controlling the brake of winding, hauling and
other engines by means of a differential or compensating arrangement by which a
series of definite motions may be produced ensuring the desired pressure on the
brake and a definite locking of the gear.
Dated th: LL .
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