Improvements in and connected with Measuring Pumps for Inflam- mable Oils and other Liquids, especially applicable to Oil Engines.
Year: 1898

page_text: Date of Application, 4th July, 1898
Completo Cannifination loft 11th Fah
1000
Accented
18th Mar 1899
Complete S
Date of Application, 4th July, 1898
1000
fication Loft 11th Foh
Accepted 18th Mar 1899
Improvements in and connected with Measuring Pumps for Inflam-
mable Oils and other Liquids, especially applicable to Oil Engines.
We, WINTER RANDELL PIDGEON, Esq., Engineer, of 42, Porchester Square,
London, W., and EDWARD FRANKLIN BRADLEY, Esq., Engineer, of "The Hive,"
Anson Road, Tufnell Park, London, N., do hereby declare the nature of this
invention to be as follows:-
The object of our invention is to provide a pump which will supply an accu-
rately measured and constant quantity of fluid at each stroke for any purpose
required, such as feeding paraffin to an oil engine, &c.
Fig. 1 shows diagramatically the essential elements of our invention.
A is a slide sliding on the face of B, and carrying a plunger P.
S is the supply port, through which the fluid to be pumped is supplied, pre-
ferably at a slight pressure.
1) is the delivery port.
P is the plunger.
A is first slid to bring P opposite S. P is then retreated for a determined
distance, as shown in the diagram. A is next slid back till P is opposite D, and
P is then pushed forward. A is then slid back till P is opposite S, when P is
withdrawn, and A again slid till P is opposite D, and so on. An amount of fluid
filling the space X is thus taken from S and delivered to D at each stroke. This
amount can be varied at will by changing the throw of the plunger P.
The improvement of this arrangement over an ordinary pump consists in the
fact that there are no lifting valves to lend an element of uncertainty or get
clogged with dust, and no spaces in which air or vapour can collect, and, by its
expanding and contracting, vary the amount of fluid transferred at each stroke.
The slide A and plunger P can be driven by a four motion movement or any
other well recognised mechanical means.
Fig. 2 shows a more convenient way of attaining the same object.
A is a circular rod sliding in the block B through stuffing boxes D, 1).
P is the plunger sliding in A through a stuffing box E.
A is driven backwards and forwards by an eccentric and connecting rod, or
any other mechanical means. On the end of P there is a head F which comes in
contact with the stops G & H, of which one is variable. As A slides backwards
and forwards it carries the plunger P with it, so far as the stops G & H will
allow. Following the action, A slides to the left, and, when the port S is
sufficiently open, F catches on the stop G, and holds back the plunger P, in-
creasing the cavity X by a determined amount; then, as A returns to the right,
P travels with it until the port D is sufficiently open, when F is stopped by H,
and pushed down, driving the fluid up D.
When using the pump to supply benzine to an explosion engine, or other
machine in which it may be ignited, we prefer to allow it to float up through

page_text: water in an arrangement similar to a sight feed lubricator, so as to prevent any
possibility of fire being conveyed backwards to the supply tank.
When it is required to use this pump on an explosion engine controlled by a
governor, it can be arranged that the governor determines whether the pump
shall work or not. This can be done by pivotting the piece N, which carries the
stop H, on the pin K and connecting to the governor, so that the latter can
move H sideways with regard to F and thus allow F to miss H and thus cause a
stroke of the pump to be missed. The same end may be attained by an adapta-
tion of several of the well-known hit-or-miss devices.
When it is necessary to place the pump in a hot situation, we prefer to jacket
it with a cold water supply, similar to that surrounding the cylinder of an ex-
plosion engine, in order to prevent volatile liquids, such as benzine, being vapor-
ized in the pump and thus render its action uncertain.
In cases where it is necessary to place the pump at some distance from the
cylinder, or when supplying benzine or paraffin directly into the cylinder, we
prefer to put a check valve as near the extreme end as possible, to prevent the
heat of the cylinder vaporizing the volatile liquid in the tube at such times as
the governor may have caused the pump to miss one or more strokes, and also
to bear the pressure of the explosion.
Dated this First day of July 1898
1
Improvements in and connected with Measuring Pumps for Inflam-
mable Oils and other Liquids, especially applicable to Oil Engines.
We, WINTER RANDELL PIDGEON, Engineer, of 42, Porchester Square, London,
W., and EDWARD FRANKLIN BRADLEY, Engineer, of "The Hive," Anson Road,
Tufnell Park, London, N., do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:.
-
The object of our invention is to provide a pump which will supply an accu-
rately measured and constant quantity of fluid at each stroke for any purpose
required, such as feeding paraffin to an oil engine &c.
Fig. 1 on the drawings left with the Provisional Specification shows diagra-
matically the essential elements of our invention. .
A is a slide sliding on the face of B and carrying a plunger P.
S is the supply port, through which the fluid to be pumped is supplied, pre-
ferably at a slight pressure.
D is the delivery port.
.P is the plunger.
A is first slid to bring P opposite S. P is then retreated for a determined
distance, as shown in the diagram. A is next slid back till P. is opposite D, and
P is then pushed forward. A is then slid back till P is opposite S, when P is
withdrawn, and A again slid till .P is opposite D, and so on.. An amount of
fluid filling the space X is thus. taken from S and delivered to D at each stroke.
This amount can be varied at will by changing the throw of the plunger P.
The improvement of this arrangement, over an ordinary pump consists in the
fact that there are, no lifting valves to. lend an element of uncertainty or get
clogged with dust, and no spaces in which air or vapour can collect, and by its

page_text: expanding and contracting, vary the amount of fluid transferred at each stroke.
The slide A and plunger P can be driven by a four motion movement or any
other well recognised mechanical means.
Fig. 2 shows a more convenient way of attaining the same object.
A is a circular rod sliding in the block B through stuffing boxes D, D.
P is the plunger sliding in A. through a stuffing box E.
A is driven backwards & forwards by an eccentric and connecting rod, or
any other mechanical means. On the end of P there is a head F, which comes in
contact with the stops G & H, of which one is variable. As A slides backwards
and forwards it carries the plunger P with it, so far as the stops G & H will
allow. Following the action, A slides to the left, and, when the port S is
sufficiently open, F catches on the stop G and holds back the plunger P in-
creasing the cavity X by a determined amount; then as A returns to the right,
P travels with it until the port D is sufficiently open, when F is stopped by H,
and P pushed down, driving the fluid up D.
When using the pump to supply benzine to an explosion engine, or other
machine in which it may be ignited, we prefer to allow it to float up through
water in an arrangement similar to a sight feed lubricator, so as to prevent any
possibility of fire being conveyed backwards to the supply tank.
When it is required to use this pump on an explosion engine controlled by a
governor, it can be arranged that the governor determines whether the pump
shall work or not. This can be done by pivotting the piece N, which carries the
stop H, on the pin K and connecting N to the governor, so that the latter can
move H sideways with regard to F and thus allow F to miss H and thus cause a
stroke of the pump to be missed. The same end may be attained by an adapta-
tion of several of the well-known hit-or-miss devices.
When it is necessary to place the pump in a hot situation, we prefer to jacket
it with a cold water supply, similar to that surrounding the cylinder of an ex-
plosion engine, in order to prevent volatile liquids, such as benzine, being vapor-
ized in the pump and thus render its action uncertain.
In cases where it is necessary to place the pump at some distance from the
cylinder, or when supplying benzine or paraffin directly into the cylinder, we
prefer to put a check valve as near the extreme end as possible, to prevent the
heat of the cylinder vaporizing the volatile liquid in the tube at such times as
the governor may have caused the pump to miss one or more strokes and also
to bear the pressure of the explosion.
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:-
1. The pump substantially as described.
2. The combination of pump, as described, together with water safety apparatus
substantially as described.
3. The combination of pump with internal combustion engine substantially
as described.
יתי
1011
T
WINTER RANDELL PIDGEON.
EDWARD FRANKLIN BRADLEY.