A Telescopic Plunger for Pumps of Steam Boilers and the like which enables to the Engine.
Year: 1898

page_text: A Telescopic Plunger for Pumps of Steam Boilers and the like, which
enables Hand Power to be Substituted for Steam without Dis-
connecting the Engine.
I, PIERCE JOHN MOORE, of The Cross, Wyvenhoe, Colchester, Engineer, do
horeby declare the nature of this invention to be as follows:-
This invention refers to injector pumps for filling steam boilers and is specially
designed for service on steam launches and small stationary engines. It is how-
ever applicable wherever it is required to employ occasionally hand power instead
of steam for pumps or injectors.
.
It consists in forming the stem of the plunger (or piston rod) of the pump
telescopic, that is to say in two parts, one being a hollow tube or sleeve while
the other is a rod or tube connected to the engine which can be disconnected
from the sleeve and kept still while the sleeve is being operated by a hand lever.
To effect this I form the inside rod or tube with the usual jaw or knuckle joint
for attachment to the engine, and a removable cotter pin connects this rod to the
sleeve.
A detachable lever pump handle with connections is fixed on the barrel of
the pump, and is so arranged as to disconnect readily when the engine is at
work. When the engine is not at work and it is desired to operate the pump,
this handle gears with flanges or collars on the sleeve and thus enables the
plunger to be worked independently of the engine, the cotter pin being first
withdrawn.
1000
COMPLETE DI FULTIVATION
A Telescopic Plunger for Pumps of Steam Boilers and the like, which
enables Hand Power to be Substituted for Steam without Dis-
connecting the Engine.
I, PIERCE JOHN MOORE, of The Cross, Wyvenhoe, Colchester, Engineer, do
hereby declare the nature of this invention and in what manner the same is to

page_text: be performed, to be particularly described and ascertained in and by the follow-
ing statement:-
This invention refers to injector pumps for filling steam boilers and is specially
designed for service on steam launches and small stationary engines. It is how-
ever applicable wherever it is required occasionally to employ hand power instead
of steam for pumps and injectors.
It consists in forming the stem of the plunger (or piston rod) of the pump
telescopic, that is to say in two parts one being a hollow tube or sleeve while
the other is a rod or tube connected to the engine which can be disconnected
from the sleeve and kept still while the sleeve is being operated by a hand lever.
To effect this I form the inside rod or tube with the usual jaw or knuckle joint
for attachment to the engine, and a removable cotter pin connects this rod to the
sleeve.
A detachable lever pump handle with connections is fixed on the barrel of
the pump, and is so arranged as to disconnect readily when the engine is at
work.
When the engine is not at work and it is desired to operate the pump, this
handle gears with flanges or collars on the sleeve and thus enables the plunger
to be worked independently of the engine the cotter pin being first withdrawn.
I will now describe the invention with reference to the accompanying draw-
ings, in which;
Fig. 1 shows an elevation of a vertical pump with my improved attachment.
Fig. 2 shows a sectional elevation of the telescopic plunger.
Fig. 3 shows a sectional plan view on the line 1-2 of Fig. 1.
Fig. 4 shows an elevation on a reduced scale of a horizontal pump fitted with
my invention.
a is the pump barrel, into which is fitted a telescopic plunger consisting of
an outer sleeve b, which constitutes the actual plunger, and an inner rod c which
fits into the sleeve b. The upper end of the rod c is connected to some moving
part of the engine such as a projection on the crosshead, as shown in dotted lines,
Fig. 1. When the pump is being operated by engine power the sleeve b and
inner rod c are coupled or attached together as shown in Fig. 2, by the cotter d
which passes through both, and is preferably kept in place by a leaf spring e or
other device.
To permit the cotter pin to be withdrawn, the spring e is pivoted at e¹ so that
it may swivel sideways off the end of the cotter.
When the pump is to be operated by manual power, the sleeve b and rod c
are uncoupled by withdrawing the cotter pin d and the engine is turned so that
the rod c will be carried to and remain at the highest point of its stroke.
The hand gear is now fitted to the upper end of the sleeve b.
61 is a boss flattened on two sides of its circumference and provided with upper
and lower projecting flanges 6.
f is a lever handle one end of which is forked, to fit round the boss 61 and is
fulcrummed at g to the forked end of a link h attached to a lug on the pump
barrel.
The hand pumping gear may be disconnected, by withdrawing the pin & which
connects the link k to the lug h¹ on the pump barrel. The pin is preferably
squared to keep the link in position. The oscillation of the lever arm f thus
raises and lowers the sleeve b, which is free to move owing to the rod c being at
the top of its stroke.
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:
In a steam pump, the combination therewith of a hand power alternative
gear to be brought into use when the engine is still, and consisting of a double

page_text: plunger bc, cotter pin d, spring e, boss b', lever f, link h and lug h¹; or equiva-
lent devices, as herein described and set forth.
Dated this 28th day of June 1898
S. S. BROMHEAD,
Patent Agent,
171, Queen Victoria Street, London, E.C.