Improvements in Force Pumps Adapted for Use with Spray, Vapour, and other Oil Lamps.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements in Force Pumps Adapted for Use with Spray,
Vapour, and other Oil Lamps.
I, GEORGE ROSE of 5 Avenue Place Springburn, Glasgow, in the county of Lanark,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved pump to be used for forcing air into the oil
tank or reservoir of spray, vapour and other oil lamps and it has for its object to
construct a cheap and effective pump for this purpose.
The force pump as constructed under this invention consists of the usual hollow
cylindrical casing wherein works the plunger or pump piston, the piston being formed
of a metal washer screwed on the lower end of the piston rod and to the underside of
which a cup leather is secured. The plunger or piston is actuated by means of a hand
lever fulcrumed to a link connected to a standard or pillar screwed into the top of the
tank or otherwise secured thereon. The piston rod of the plunger is pin jointed to
the hand lever at any convenient point in its length; or in place of fulcruming the
hand lever to a link connected to the standard, the lever may be directly fulcrumed to
the standard itself in which case a slot would be made in the hand lever to allow of
the movement of the pump piston or the hand lever would be connected to the piston
rod by a short freely moving link. Instead of using a hand lever, however a wheel
and crank or equivalent mechanism may be used to drive the pump, and the pump
may be driven by power instead of by hand.
The pump cylinder which is preferably fitted either by bolting or screwed connection
on the top of the oil tank, but which may be fitted to its side at any convenient part,
has near its lower end an air inlet valve preferably a diaphragm valve, but which may
be a ball or other suitable valve, formed on or fitted it. At the base of the cylinder the
air outlet valve is fitted, preferably by a screwed joint. This valve is preferably a
small diaphragm valve having a guide spindle attached to it and it works in a metallic
cap or casing screw-connected at its upper end to the base of the pump cylinder and
having in its lower end a small hole to allow for the play of the valve spindle. To
prevent air escaping out of the tank the valve is held tight against the air orifice by a

page_text: coil spring fitted in the inside of the casing or cap and pressing against the under side
of the valve. The air at each downward stroke of the pump piston forces the valve
down, against the pressure of the spring and so enters the valve cap or casing from
whence it escapes into the tank through a series of small holes or their equivalent.
formed around the casing. In case of the valve becoming deranged through any
cause another valve and cap may be fitted below it so as to minimise the liability to
derangement of the apparatus.
To enable the pump to be easily screwed on and taken off from the tank the outside
of the cylinder is or may be at its base or other convenient part of hexagonal form so
as to be easily turned by a key. When the pump is bolted to the tank suitable
flanges are formed at the base of the cylinder to enable it to be easily bolted
down.
The invention although described as being used for forcing air into the oil tank
or reservoir can be used for forcing oil thereinto in which case the inlet valve is
connected by a suitable pipe connection to the means of oil supply. In the case of
that class of oil lamps, known as 'steam lamps' the pump can be used to force air
into the water reservoir or tank.
D
T
1
л
1000
H. D. FITZPATRICK,
17, Hope Street, Glasgow,
Agent.

page_text: Vapour, and other Oil Lamps.
I, GEORGE ROSE formerly of 5 but now of 3 Avenue Place Springburn, Glasgow
in the County of Lanark, 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 an improved pump to be used for forcing air into the oil
tank or reservoir of spray vapour and other oil lamps and it has for its object to
construct a cheap and effective pump for this purpose.
And in order that my said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings Fig. 1, of which is an elevation of my
improved force pump, & fig. 2 is a vertical section of same. Fig. 3, represents the
pump as driven by a wheel and crank. Fig. 4, represents in section a different
arrangement of air inlet valve from that shown in figs. 1 and 2. Fig. 5 is a plan
view of the air outlet valve and showing the cap in section on the line x-x fig. 2.
Referring to the drawings-
The force pump as constructed under this invention consists of the usual hollow
cylindrical casing A, wherein works the plunger or pump piston B, the piston being
constructed of the usual metal washer C, screwed on the lower end of the piston rod
and to the underside of the washer C the cup leather D is secured by means of a
nut a and washer b. The plunger or piston is actuated by means of a hand lever E,
fulcrumed at F to a link & connected to a standard or pillar H which is preferably
screwed into the top of the oil tank or reservoir I or otherwise secured thereon. The
piston rod of the plunger is pin jointed to the hand lever E, at any convenient point in its
length, or in place of fulcruming the hand lever E to a link & connected to the standard H,
the lever may be directly fulcrumed to the standard, which in this case would be
longer, a slot being made in the hand lever E to allow of the movement of the pump
piston or the hand lever E might be connected to the piston rod by a short freely
moving link. Instead of using a hand lever, however a wheel K and crank L (see
fig. 3) or equivalent mechanism may be used to drive the pump. The pump may be
driven by power instead of by hand if so desired.
The pump cylinder A, which is preferably fitted either by bolting or screwed
connection on the top of the oil tank, but which may be fitted to its side at any con-
venient part, has preferably near its lower end an air inlet valve M, preferably a small
disc or diaphragm valve as shown, but which may he a ball or other suitable valve,
formed on or fitted to it. At the base of the cylinder A, the air outlet valve is fitted.
This valve is a small disc or diaphragm valve N, having a circular knife edge or
ridge n, formed on it, this ridge fits into or closes by preference against a female
groove O, filled with india rubber or other soft material so as to form a sensitive air
tight joint when the valve is closed against its seat, or instead of having a groove
filled with india-rubber the seat may be formed with a solid soft metal face. The
valve is formed with or has attached to its under side a guide spindle P and also a
small three toed guide spindle Q to its upper side. The spindle Q is formed with the
toes or edges to allow air to pass from the cylinder A, into the tank or reservoir I.
Instead of having a triangular shaped spindle Q, the spindle may be made round and

page_text: have grooves formed in it to serve as air passages. The valve works in a metal cap R
screwed either at its upper end to a socket piece S which in its turn is screwed into
the base of the pump cylinder A. or it may be screwed directly to the base of the
cylinder itself. This cap R has at its lower end a small hole in it to allow for the
play of the valve spindle P. To prevent air escaping out of the tank or reservoir I,
the valve N, is held tight against its seat by a coil spring T, fitted in the inside of the
casing or cap R and which presses against the under side of the valve. The air at
each downward stroke of the pump piston forces the valve N, to open against the
pressure of the spring T, and so passes into the valve cap or casing R from whence it
escapes into the oil tank or reservoir I through a series of small holes U or their
equivalent formed around the casing R. In case of the valve becoming deranged
through any cause another valve and cap or several of them may be fitted below it
so as to minimise the effects of such derangement.
To enable the pump to be easily screwed on and taken off from the tank the outside
of the cylinder is or may be at its base V or at other convenient part of hexagonal
form so as to be easily turned by a key or spanner. When the pump is to be bolted
to the tank suitable flanges are formed at the base of the pump cylinder to enable it
to be easily bolted down.
Instead of using the air inlet valve M, as shown at figs. 1 and 2, a valve W,
(fig. 4) similar in construction to the air outlet valve may be used. In this case the
valve seat is made in the cap instead of in the socket piece as hereinbefore described.
Or the inlet valve M may be dispensed with altogether and suitable clack or other
valves be made in the piston B, as with ordinary pumps, in this case the piston rod
would work in a stuffing box and there would also be formed a suitable air admission
valve in the cylinder cover Y.
My improved force pump whilst being simple in construction and effective is not
so liable to become deranged as. pumps heretofore used with oil lamps, as none of the
working parts come in contact with the oil so as to be subject to its destructive action.
And further the valve N, being formed with a knife edge n, no grit or dirt has room
to lodge thereon and so tend to prevent the valve's effective action.
The invention although described as being used for forcing air into the oil tank
or reservoir can, if so desired, be used for forcing oil thereinto in which case the
inlet valve is connected by a suitable pipe connection to the means of oil supply.
In the case of that class of oil lamps, known as "steam lamps" the pump can be
used to force air or water into the water reservoir or tank.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The general arrangement and combination of the parts of the improved force
pump for use in connection with spray, vapour, and other oil lamps, substantially
as hereinbefore described and shown in the drawings annexed.
2. The combination with the oil tank or reservoir of spray vapour or other oil
lamps of a pump, constructed substantially as. hereinbefore described and shown on
the annexed drawings, for the purpose of forcing air into said oil tank or reservoir.
3. In a force pump for use in connection with spray vapour or other oil lamps the
application and use of an outlet valve constructed substantially as hereinbefore described
and shown on the annexed drawings.
Dated this 27th day of December 1888.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow,
Agent.