An Improved Reversing and Controlling Apparatus for Steam Winding and other similar Engines.
Year: 1899

page_text: Date of Application, 1st Mar., 1899
Complete Specification Left, 30th Nov., 1899-Accepted, 1st Mar., 1900
An Improved Reversing and Controlling Apparatus for Steam
Winding and other similar Engines.
JOHN WOOD, Elmfield, Wigan, Mechanical Engineer, do hereby declare the
nature of this invention to be as follows:-
The object of the invention is to facilitate the reversing and controlling of
steam winding and other similar engines.
In carrying out my invention I provide a steam cylinder with slide valve,
and, placed longitudinally with it on the same bed a second cylinder charged
with oil. The piston of oil cylinder is upon the same rod as the steam cylinder
piston, and works in conjunction with it."
The oil cylinder has attached to it a valve box with ports communicating to
oil cylinder, and, piston valves perforated to allow free circulation of oil and
which piston valves are upon the same rod and act in conjunction with the slide
valve of steam cylinder. To the piston rod is fixed a crosshead connecting by means
of links with one end of a lever keyed to reversing shaft of engine.
To the slide valve rod is attached a double lever with a coupling rod at each end.
One coupling rod is attached to a lever working on a fulcrum fixed to the bed-
plate and connected at the other end with another lever keyed on reversing shaft.
The other coupling rod is attached to a hand lever with quadrant and ratchet, by
the movement of which lever the whole apparatus is controlled.
Dated this 27th day of February 1899.
An Improved Reversing and Controlling Apparatus for Steam
Winding and other similar Engines.
JOHN WOOD, of Elmfield, Wigan, in the County of Lancaster, Mechanical
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:-
This invention relates to winding engines, more particularly such as are
employed at coal mines, and is designed for easy manipulation of the reversing
gear.
It will be fully described with reference to the accompanying drawings in which
sufficient of a winding engine is shewn to illustrate the invention.
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page_text: Fig. 2. Plan.
Fig. 3. Sectional plan of the steam and oil cylinders with their respective
valves.
A steam cylinder A complete with slide valve is firmly bolted to bedplate C,
and also securely held in position thereon by blocking keys e, e.
Placed longitudinally with steam cylinder A is an oil cylinder B which is
also firmly bolted to bedplate C. The two cylinders A and B are connected
together by a casting D, which also forms covers for back end of steam cylinder A
and front end of oil cylinder B, thus keeping the two cylinders rigid and perfectly
in line with each other.
The piston of the oil cylinder B is secured on the same piston rod E as the
piston of the steam cylinder A, and works in conjunction with same.
Attached to the oil cylinder B is a valve box F, the ports of which communicate
with the ends of the oil cylinder, in the valve box F are two piston valves one to
each port, which said valves are perforated to allow free circulation of the oil
from one end to the other of the oil cylinder B.
These piston valves are secured to the same valve rod G, as the slide valve
of the steam cylinder A and also work in conjunction with same.
To the piston rod E is attached by means of a cottern, a crosshead H with
turned ends, on which are secured the two connecting links J, J', which connect
the crosshead H to the lever K which lever is securely keyed on to the reversing
shaft L of engine.
On the reversing shaft L is keyed the lifting lever M which raises and lowers
the suspension link N this suspension link N is connected to valve rod 0 of
engine, and moves the block in the reversing link P. The movement of this
block in the reversing link P controls the forward and backward motion of the
engine. On the bedplate C, two guides Q and R are firmly bolted; the guide Q
is for piston rod E and the guide R is for valve rod G.
To the end of valve rod is attached a double lever S also to the ends of
which are attached the coupling rods T and T.
The rod T is attached at the opposite end to the double lever which works
on fulcrum m, which said fulcrum is secured to bedplate C by two studs. The
double lever is then connected at the opposite end to the connecting link V:
this link connects the double lever to the lever W which is keyed on
reversing shaft L of engine.
The connecting link V is provided with screw ends and a double nut for
adjustment.
Also the ends of levers and W are made with long slotted pin-holes for
regulating the travel of valves. The coupling rod T is attached at one end to the
double lever S and at the opposite end to a hand lever X which said hand lever
is worked by engineman and controls the whole apparatus.
The hand lever X works on a pin in the quadrant Y, and is fitted with brass
lever, spring, catch etc. for holding same in any desired position.
The quadrant Y is bolted on to a bracket Z.
The bedplate C is bolted on to the two brackets 7 and 7". The three
brackets Z, Z and Z are all securely bolted to bedplate of engine by studs.
MODE OF OPERATION.
When the hand lever X is moved from central position, through the inter-
vention of coupling rod T, the double lever S is also moved accordingly. This
gives movement to the valve rod G, which, actuating slide valve r, opens port in
steam cylinder A thus allowing steam to enter cylinder and thereby forcing
piston and rod E forward or backward as may be desired. The travelling of
piston and rod, through the intervention of coupling links J J and lever K, gives
a turning motion to the reversing shaft L, and thus also gives movement to
lifting lever M, which being connected to valve rod 0, thereby reverses the engine.
The lever W being keyed on the same reversing shaft L gives movement to the
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page_text: double lever U through the coupling rod V. The double lever U through the
coupling rod T¹ also gives an opposite movement to the double lever S to that
originally given by the movement of the, hand lever X thereby causing the
steam valve e to close the steam port and thus stopping the reverser in any
desired position.
The working of the reverser is made smooth and perfectly free from jerking
by the action of the oil in the oil cylinder B the piston valves of which being
worked exactly in conjunction with the steam valve r of steam cylinder A, thus
allowing the oil ports to open and close precisely at the same moment as the
ports of the steam cylinder. When the steam valve closes the ports of the steam
cylinder A, the piston valves also close the ports in the oil cylinder B thereby
locking the whole arrangement at any point whatever at the will of the engineman.
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. The application to winding or any other engines which of necessity, are
required to run in both directions; of an apparatus which facilitates the reversing
of such engines with a minimum amount of energy on the part of the engineman.
2. An improved simple arrangement of valves for working the apparatus; the
valve which controls the steam in the steam cylinder being an ordinary slide valve
and the two valves for controlling the passages of the oil in the oil cylinder
being ordinary piston valves. All the three valves being secured on the same
valve rod, absolutely prevent any disarrangement in the motion of same.
3. An apparatus which on the whole, is so entirely under the control of the
engineman, as to enable him, with ease, to either completely reverse the engines
or to place, and when necessary leave them, in such a position as to absolutely
prevent them from starting in either direction, thus preventing accident in the
absence of the engineman, should the steam by accident be admitted to the steam
engine cylinders.
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