Improvements in Injectors for Feeding Steam Boilers or Generators and for Raising and Forcing Liquids for other Purposes.
Year: 1887

page_text: Date of Application, 14th Mar., 1887
Complete Left, 27th Oct., 1887.
Complete Accepted, 29th Nov., 1887
PROVISIONAL SPECIFICATION,
Improvements in Injectors for Feeding Steam Boilers or Generators
and for Raising and Forcing Liquids for other Purposes.
I WILLIAM STEELE TOMKINS, of the Atlas Works, Manchester, in the County of
Lancaster, Engineer, do hereby declare the nature of the said invention to be as
follows-
My invention relates to what are termed Exhaust and supplementary Injectors, that
is, to Injectors designed to work with exhaust steam only and to a supplementary
injector combined therewith to be worked by "live" steam from a steam generator.
The object of my invention is to simplify the construction of the combined injectors
so that the internal parts of both injectors (except the steami nozzle of the exhaust
injector) can be readily withdrawn to be inspected or cleaned, and also to arrange the
cocks and valves so as to be operated to start the combined injectors to work by tho
movement of one handle.
I prefer to form the casing for the combined injectors in one piece having the
required junctions for water, steam and overflow, which casing is bored out and
prepared to receive the nozzle for the exhaust steam which is inserted at one end of
the casing, and the nozzles and internal parts forming the other parts of the combined
injector which are inserted and screwed in at the other end of the casing.
The combining nozzle for the exhaust steam is made with a short flap near the small
end of the nozzle and it has a prolongation from one side of it which is made
cylindrical into which the receiving nozzle of the exhaust steam injector is secured,
and this prolongation is also prepared to have one end of the supplementary, com-
bining and discharging cones secured in it.
The exterior of the discharging cone of the exhaust injector forms the steam cone
of the supplementary injector; the cylindrical part of the prolongation from the
combining cone of the exhaust steam injector having slits or openings in it to allow
the steam to enter from the live steam branch of the casing.
Except the steam cone of the exhaust injector all the cones or nozzles of both tho
Exhaust steam and supplementary injectors are thus connected and they can be

page_text: readily screwed in and out at one end of the casing, packing being used if and where
required to make joints with the interior of the casing.
The water passing from the discharging cone of the supplementary injector enters
the casing, and leaves for the boiler at the outlet branch of the casing.
If desired a stop or back pressure valve may be used between the Exhaust and
supplementary injectors.
A cock or valve for exhaust steam and water and for "live" steam and for the
overflow are or may be arranged by my invention to be connected and operated by
one handle so that by moving this handle the cocks or valves are opened and closed in
the order required to start the combined injectors to work.
This is or may be effected by levers and rods or by cam inclines or cams, the
cocks or valves for exhaust steam and water being first opened, then the cock or
valves for "live" steam is opened, and the overflow from the supplementary injector
closed, this order of opening and closing the cocks or valves to start the combined
injector being effected by the movement of one handle.
My improvements are applicable where the supplementary steam is central as
well as at the exterior of the liquid discharged by the Exhaust injector.
Dated this Twelfth day of March A.D. 1887.

page_text: Improvements in Injectors for Feeding Steam Boilers or Generators
and for Raising and Forcing Liquids for other Purposes.
I WILLIAM STEELE TOMKINS of the Atlas Works Manchester, in the County of
Lancaster, 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 :-
My invention relates to what are termed exhaust and supplementary Injectors, that
is to Injectors designed to work with exhaust steam only and to a supplementary
Injector combined therewith to be worked by "live steam from a steam generator.
The object of my invention is to simplify the construction of the combined injectors
so that the internal parts of both injectors (except the steam nozzle of the exhaust
injector) can be readily withdrawn to be inspected or cleaned, and also to arrange the
cocks and valves so as to be operated to start the combined injectors to work by the
movement of one handle.
I prefer to form the casing for the combined injectors in one piece having the
required junctions for water, steam and overflow, which casing is bored out and
prepared to receive the nozzle for the exhaust steam which is inserted at one end of
the easing, and the nozzles and internal parts forming the other parts of the combined
injector which are inserted and screwed in at the other end of the casing.
The combining nozzle for the exhaust steam is made with a short flap near the
small end of the nozzle and it has a prolongation from one side of it which is made
cylindrical into which the receiving nozzle of the exhaust steam injector is secured,
and this prolongation is also prepared to have one end of the supplementary combining
and discharging cones secured in it.
The exterior of the discharging cone of the exhaust injector forms the steam cone
of the supplementary injector, the cylindrical part of the prolongation from the
combining cone of the exhaust steam injector having slits or openings in it to allow
the steam to enter from the live steam branch of the casing.
Except the steam cone of the exhaust injector all the cones or nozzles of both the
Exhaust steam and supplementary injectors are thus connected and they can be readily
screwed in and out at one end of the casing, packing being used if and where required
to make joints with the interior of the casing.
The water passing from the discharging cone of the supplementary injector enters
he casing and leaves for the boiler at the outlet branch of the casing.
If desired a stop or back pressure valve may be used between the exhaust and
upplementary injectors.
A cock or valve for exhaust steam and water and for "live" steam and for the
verflow are or may be arranged by my invention to be connected and operated by
ne handle, so that by moving this handle the cocks or valves are opened and closed
a the order required, to start the combined injectors to work.

page_text: This is or may be effected by levers and rods or by cam inclines or cams, the cocks
or valves for exhaust steam and water being first opened, then the cock or valves for
live steam is opened, and the overflow from the supplementary injector closed, this
order of opening and closing the cocks or valves to start the combined injector being
effected by the movement of one handle.
My improvements are applicable where the supplementary steam is central as well
as at the exterior of the liquid discharged by the Exhaust injector.
Fig. 1 is an outside elevation.
Fig. 2 is a longitudinal section taken at a right angle to the plane of the elevation
fig. 1.
Fig. 3 is a cross sectional elevation through the water supply branch at A-A fig. 2,
showing the cock therein.
Fig. 4 is a cross section through the casing upon the line B-B fig. 2, looking
towards the small end of the exhaust steam combining cone from the discharging
cone, and
Fig. 5 is a cross section through the delivery branch of the casing looking towards
the delivery end of the discharging cone.
Fig. 6 is an elevation showing the combined injector as when applied to the side of
a Locomotive and below the footplate thereof and with the handle connected therewith,
for actuating the cock and valves, and
Fig. 7 is an elevation showing the injector combined with a throttle valve for
turning on and off the supply of exhaust steam and the mechanism for actuating the
cock and valves.
The casing a for the combined exhaust and live steam injector is formed in one
piece with branches or junctions for exhaust steam (a) for water (a2) for live
steam (3) for delivery of the combined steam and water (a) for overflow from the
exhaust steam part of the Injector (a) and also overflow (a) from the live steam
part of the injector.
The casing a is bored out to receive the exhaust steam nozzle which is placed at
one end, as shown, and the casing is also bored out to receive and fit the upper part
of the exhaust steam combining cone c and also the projecting cylindrical part (el and e²)
from the discharging end of the exhaust steam combining cone or nozzle c.
The discharging end of the exhaust steam combining cone c is combined with a
short flap hinged at c which has a projection from one side which will when the
flap opens come against the interior of the casing and thus limit the movements of
the flap c
The projection from the exhaust steam combining cone c is cylindrical to fit the
bored out casing and has two screw tapped holes axial with the exhaust steam
discharging cone c, one in the part c¹ for the receiving nozzle d, and the other for the
combining and discharging cones e, of the live steam part of the injector.
The cone is first passed through the screw tapped hole in c² for the cones e, and
then the latter is screwed in the hole in the part c² which is or may be pinned or
otherwise secured when screwed in to prevent it from unscrewing when the entire
connected parts are screwed in and out of the lower end of the casing a, as shown,
the end of the cones e having a screw plug e for examining the passages and
removing obstructions when required.
One cylindrical part c¹ of the prolongation of the exhaust steam combining cone c is
separated from the other 2 by a space formed by slots or holes e* which allow live
steam to pass from the annular space c to the exterior of the nozzle d, the interior of
which forms the discharging cone of the exhaust steam injector, and the exterior the
steam cone of the live steam injector.
When the combined steam and water has passed the discharging
cone e from the
live steam injector, it leaves by passages e² formed on the exterior of the live steam
discharging cone e and enters the annular space between the latter and the interior o
the casing a, passing outwards through the delivery branch or junction a'.
The branch or junction a² for water to the exhaust steam injector is provided with
a cock for turning on and off the supply of water as shown by figs. 1, 2 and 3.

page_text: The junctions upon the casing for live steam (a³) and for overflow from the live
steam have each a valve casing and attached by flanges or otherwise.
Each valve casing and is constructed with a stuffing box for a valve spindle and
valve as shown in fig. 2.
The valve spindle g* is continuous and extends between the two valves g' and '
which are screwed or otherwise secured upon the ends of the spindle g* after the .
gland and gland casings have been first placed thereon.
The valve for live steam is shown closed and the valve for overflow from the
live steam injector is shown open in fig. 2.
The middle part of the spindle for the two valves is jointed with an arm *
having its fulcrum on a stud secured in the casing a, of the injector, and upon the
same stud the boss of another arm or lever ³ is placed, the bosses of the two arms
being arranged to interlock with play between them to allow the arm ³ to he
oscillated through the are 1-2, fig. I, before it begins to carry with in the arm h*
fig. 1, which arm h* in opening and closing the valves g' and ' moves through the
are shown by centre lines on fig. 1.
There is an arm or lever on the water cock, which moves through the arc 1-2
shown on fig. 1, in opening or closing the cock and through the are 2-3 after it has
opened the cock. The two arms or levers and h³ are connected by a rod ƒ” jointed
to each so as to move together.
It will be understood that when the arms or levers and h³ are in the position
shown in fig. 1, the water supply and the live steam is shut off and the overflow from
the live steam is open.
In starting the injector to work when the supply of exhaust steam is turned on the
levers or arms and are slowly moved through the arcs 1-2 by any suitable
connection, say with the arm as shown in fig. 1, then this slow movement of the
said levers through the arcs 1-2 will first turn on the supply of water and the latter
part of the movement through the ares, that is, from 2-3 will open the live steam
supply and close the live steam overflow and thus start the combined exhaust and live
steam injector to work.
The reverse oscillation of the levers f" and ³ first. shuts off the water supply and
lastly shuts the live steam supply and opens the live steam overflow.
Fig. 6 shows the combined exhaust and live steam injector as supposed to he
arranged on the side of a Locomotive with the rod for actuating the levers and h³
passing vertically through a slot or hole in the foot plate of the Locomotive.
This rod has notches in its edge which will take hold of the edge of the foot
plate, the notches being held against the edge of the slot in the foot plate by a bent
spring as shown, secured to the foot plate i. A weighted lever is or may be arranged
to press against the handle rod / same as the spring if desired.
In the position in which the handle rod is shown, one notch has hold of the edge
of the foot plate and holds the handle rod in the position in which the injector is not
working, and when drawn up to bring the next two notches in the edge of the handle
rod to take hold of the edge of the foot plate the injector is started to work, but in
moving the handle rod * there is a pause made between the two lowest notches on the
handle rod/*.
x
In fig. 7 the combined exhaust and live steam injector is supposed to be placed with
its longitudinal axis in a horizontal position, and the connecting rod is actuated by
a rod and lever having its fulcrum on any convenient part, this hand lever j³
being provided with a spring bolt (same as the reversing gear lever of a Locomotive)
which shoots into notches in a quadrant.
The rod which is actuated is jointed by a link to an arm upon the end of a
throttle valve spindle for turning on and off the supply of exhaust steam, so that
the exhaust steam is turned on to the injector at the saine time or a little before the
water supply.
When my improved combined exhaust and live steam injectors are used for other
purposes than supplying Locomotive boilers, they are placed in any required position
and the rod is connected with the actuating handle accordingly.

page_text: 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 combination and arrangement of combined exhaust steam and live steam
injectors so that all the internal parts except the exhaust steam cone can be with-
drawn from one end of the casing, as hereinbefore described and illustrated by the
drawings.
2. The combination and arrangement of the parts of combined exhaust steam and
live steam Injectors so that the cocks or valves for water, live steam and overflow from:
live steam are actuated by one handle, substantially as hereinbefore described and
illustrated by the drawings.
3. The combination and arrangement of the parts of combined exhaust, steam and
live steam Injectors so that the cocks or valves for exhaust steam, water, live steam
and overflow from live steam are actuated by one handle substantially as hereinbefore
described and illustrated by the drawings.
4. The combination and arrangement of the parts of combined exhaust steam and
live steam Injectors, substantially as herein before described and illustrated by
figs. 1 to 6 inclusive of the drawings, and by fig. 7 of the drawings.
Dated this Twenty-sixth day of October 1887.
PETER J. LIVSEY,
Agent.