Improvements in and relating to Pumps and Syringes.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Pumps and Syringes.
We FRANCIS JAMES TOWNSEND of 1 Brighton Placo Irving Street Decorator,
WILLIAM MATHEWS SIDDALL of Mansfield Villa Stoney Lane, Moseley Mechanical
Engineer and GEORGE HENRY HADGKISS of Avondale Road Sparkbrook Mechanical
Engineer, all of Birmingham in the County of Warwick do hereby declare the
nature of our invention to be as follows:-
This invention consists in the combination and arrangement of the parts herein-
after described forming and constituting "an improved double action pump'
suitable for use in small sizes with air, gas, steam, or liquid and also suitable for
use as a syringe.
We provide a barrel or cylinder of suitable length and diameter, near one end of
such barrel or cylinder we provide a port-hole and also a similar port-hole near tho
other end, we connect the two port-holes by means of a suitable conduit situated
outside the bore of barrel and leading from one port-hole to the other port-hole,
that end of conduit coincidental with the discharge end of pump is left open and a
valve seat is provided therein, such valve seat being situated just below the front-
end port-hole, a suitable valve is provided to rest in the conduit valve-seat and a cap
is also provided to close the open end of conduit.
In the construction of small hand-pumps under this our invention wo provide a
disc and secure it to the internal periphery of barrel so as to form a permanent closed
front end to pump, but in the building of large pumps under this our invention the
closed end may be cast or otherwise formed in one piece with the barrel, or as part
of the cover, but in all cases the disc or stop end of barrel would be provided with
one, two, or more outlet passages for use in the manner hereinafter described; the
piston-rod may pass through the stop-end of pump, or the piston-rod may end in a
connection with the back side of piston, in such cases a short rod is by preference
provided on the outer face of disc, in all cases we provide a valve made of rubber
or other equivalent and suitable substance to take a flat bearing on the outer face
of disc or stop-end of barrel.
We next provide a piston-rod carrying a suitable piston or plunger, we also
provide a cap or cover for the back end of pump-barrel, the piston-rod passing out
through such back-end cap or cover so as to receive a suitable handle with which
to operate the piston or plunger by band, or so as to receive connecting mechanism
for large sizes, operated by motive power.
We next provide a cap for the front end of barrel, such cap being provided with
a suitable nozzle to deliver air, gas or liquid, the cap may screw or otherwiso take
connection with the delivery end of barrel, either inside or outside such barrel.

page_text: The barrel is provided with an inlet-branch-pipe, at or about equal distance from
each end, such inlet-branch-pipe is formed into a valve-seat to receive a check-valve,
a cap or cover being secured over the check-valve, such cap having an inlet passage
through which to draw air, gas, or liquid into the barrel of
pump.
In putting the separate parts together, the valve is placed in the barrel iulet-
branch-pipe and a cap screwed over the branch or otherwise connected to said
branch-pipe; a washer made from india-rubber or other suitable yielding material
is next passed over the end of piston-rod, or over the short rod projecting from disc,
so as to take a flat bearing over the outlet passages in said disc, the piston-rod
carrying the piston or plunger is then passed into the back-end of pump and the
piston pushed up to front end of pump-barrel, the back-end cover of pump is then
screwed or otherwise secured in position and the front cap or nozzle also screwed
or otherwise secured in position.
In using our improved pump for expanding the tyre of a bicycle, air would enter
through the central inlet branch; when the piston was at back end of barrel ready
for forward stroke (the air so entered filling the whole length of the pump-barrel)
the pushing of the piston-rod handle would carry the piston or plunger to the front
of barrel thus carrying the air in front of the said piston or plunger, the air so
pushed forward would escape through the passages in the disc, lifting the rubber
valve during such forward stroke and entering the chamber formed above the disc
under the front cover, the air would pass out of such air chamber through the nozzle
of cap.
The backward travel of the piston would discharge the second barrel full of air
that had entered the barrel after the piston in its forward stroke had passed the
inlet-valve of inlet-branch situated in centre of barrel, the backward stroke of
plunger or piston driving the air out of pump-barrel through the back-end port-hole
of barrel, into the conduit, along which it would rush and lift the conduit-valve
provided at front open end of conduit and so permit the air to pass through the front
port-hole of barrel into the chamber hereinbefore described as formed between the
upper face of disc and the under side of front cover of barrel, from whence the air
would pass through the nozzle in exactly the same manner as the air driven by front
stroke of piston.
From the foregoing description it will be readily understood that our improved
double action-pump can be utilized in small sizes for Bicycles such a double action
pump six inches in length delivering as much air into a tyre at one backward and
forward stroke as a single action pump 12 inches in length would deliver in one
stroke.
The receiving and delivery of water or other liquids by means of our improved
double action pump is exactly similar to that herein before described in relation to
the receiving and delivery of air, a flexible or other supply-tubo being connected
to the short central supply branch of barrel, such supply-tube being carried to the
water or other liquid to be pumped up and discharged.
Our improved double action pump as hereinbefore described is suitable for use as
a syringe when fitted with suitable rose or delivery nozzle.
Our improved double action pump as hereinbefore described is also suitable for
construction in large sizes so as to connect the piston-rod or plunger-rod to motivo
power and so lift and discharge large volumes of air, gas or liquid.
Dated this 2nd day of September 1896.
ALFRED WILLIAM TURNER,
Cobden Buildings, 67 Corporation Street, Birmingham,
Agent for the Applicants.

page_text: Improvements in and relating to Pumps and Syringes.
We FRANCIS JAMES TOWNSEND of 1 Brighton Place Irving Street Decorator,
WILLIAM MATHEWS SIDDALL of Mansfield Villa Stoney Lane, Moseley, Mechanical-
Engineer and GEORGE HENRY HADCKISS of Avondale Road Sparkbrook, Mechanical
Engineer, all of Birmingham in the County of Warwick 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 consists in the combination and arrangement of the parts herein-
after described forming and constituting an improved double-action pump suitable
for use in small sizes with air, gas or liquid and also suitable for use as a syringe.
We will now proceed to describe with reference to the accompanying drawings
the manner in which our invention is constructed and used.
Figure 1 represonts a longitudinal section of the pump.
Figure 2 represents a plan of Figure 1.
Figure 3 represents a longitudinal section of a cast pump suitable for making up
in large sizes.
Figure 4 represents an end view of Figure 1 as viewed from the arrow with the
nozzle and valves removed.
Figure 5 represents a section of Figure 1 on the line A. B.
In carrying out our invention we provide a barrel or cylinder «. Near the end of
barrel we provide port-holes b and c, we next connect the two port-holes by means
of the conduit d; the end of conduit coincidental with the discharge end of pump
is left open and a valve-seat e provided, such valve-seat being situated below the
front end port-hole b, a valve f is provided to rest in the valve-seat e and a removable
cap g is provided to close the end of conduit.
In the construction of small hand-pumps under this our invention we provide a
disc h as shewn at Figure 1 and secure it to the internal periphery of barrel so as to
form a permanent closed front-end to pump, but in the building of large pumps
under this our invention the closed end may be cast or otherwise formed in one
piece with the barrel as shewn at j Figure 3, or as part of the cover, but in all cases
the disc or stop end h or j of barrel a would be provided with one, two, or more
outlet passages for use in the manner hereinafter described; the piston-rod may
pass through the top of pump, or the piston-rod may end in a connection with the
back-side of piston, in such case a short rod x is by preference provided on the
outer face of disc, in all cases we provide a valve w made of rubber or other
equivalent and suitable substance to take a flat bearing on the outer face of disc or
stop end of barrel.
The piston-rod m carries a suitable piston or plunger n, we also provide a cap or
cover o for the back-end of pump-barrel a provided with a suitable stuffing-box,
the piston-rod passes out through the stuffing-box of such back-end cap or cover,
so as to receive a suitable handle p with which to operate the piston or plunger by
hand, or the piston-rod may receive connecting-mechanism at q suitable for operation
by motive-power.
We next provide a cap r for the front end of barrel, such cap being provided
with a suitable nozzles to deliver air, gas or liquid, the cap r may screw or other-
wise take connection with the delivery end of barrel, either inside or outside such
barrel.
The barrel is provided with an inlet branch-pipe t, at or about equal distance
from each end, a cap or cover u is provided and formed with a valve-seat such cap

page_text: or cover screwing over the branch t and so retaining the valve within the branch t
the cap or cover u is provided with an inlet passage through which to draw air, gas
or liquid into the barrel of pump.
In putting the separate parts together, the valve v is placed in the barrel inlet
pipe and the cap u screwed over the branch or otherwise connected to such
branch t.
A washer w made from india-rubber or other suitable material is next passed
over the short rod x projecting from disc h, so as to take a flat bearing over the
outlet passages in said disc h, the piston-rod carrying the piston or plunger is then
passed into the back-end of pump and the piston pushed up to front-end of pump-
barrel, the back-end cover o of pump is then screwed or otherwise secured in position
and the front cap or nozzle r also screwed or otherwise secured in position..
In using our improved pump for expanding the tire of a bicycle, air would enter
through the central inlet branch t, when the piston was at the back-end of barrel
ready for forward stroke (the air so entered filling the whole length of the pump-
barrel) the pushing of the piston-rod handle p would carry the piston or plunger n,
to the front of the barrel thus driving the air or liquid in front of the said piston or
plunger n, the air or liquid so driven forward would escapo through the passages k
in the disc w lifting the rubber valve during such forward stroke and entering the
chamber y formed above the disc w under the front cover r, the air or liquid would
pass out of the chamber y through the nozzle 8 at top of cap.
The backward travel of the piston » would discharge the second barrel-full of
air or liquid that had entered the barrel after the piston in its forward stroke had
passed the inlet valve of branch t situated in centre of barrel, the backward stroke
of plunger or piston driving the air or liquid out of pump-barrel through the back-
end port-hole c of barrel into conduit d'along which it would rush and lift the
conduit valvef provided at front ond of conduit and so permit the air to pass through
the front port-hole b of barrel into the chamber z herein before described as formed
between the upper face of disc and the under-side of barrel front-cover r, from
whence the air would pass through the nozzle in exactly the same manner as the
air driven by front stroke of piston.
From the foregoing description it will be readily understood that our improved
double-action pump can be utilized in small sizes for bicycles, such a double-action
pump six inches in length delivering about as much air into a tyre at one backward
and forward stroke as a single-action pump 12 inches in length would deliver in its
forward stroke.
The receiving and delivery of water or other liquids by means of our improved
double-action pump is exactly similar to that herein before described in relation to
the receiving and delivering of air, a flexible or other supply-tube being carried to
the water or other liquid to be pumped and discharged.
Our improved double action pump as hereinbefore described is also suitable for
construction in large sizes as shewn at Figure 3, so as to connect the piston-rod m
to motive-power at q and so lift and discharge large volumes of air, gas or liquid.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1st. A double-action air-pump for use in expanding flexible wheel-tires, made by
the combination of the barrel a with the conduit d, the port-holes e c, the outlet-
passages and the valves f and vas illustrated and described in relation to
Figures 1, 2, 4 and 5.
2nd. A double-action pump for use as a syringe or for use in discharging liquids,
made by the combination of the barrel a with the conduit d, the port-holes the
outlet passages k and the valves f and v as illustrated and described in relation to
Figures 1, 2, 4 and 5.
3rd. A double-action pump actuated by motive power, made by the combination

page_text: of a barrel with a conduit connected by means of port-holes together with the inlet
and outlet valves as illustrated and described in relation to Figure 3.
Dated this 8th day of June 1897.
ALFRED WILLIAM TURNER,
Cobden Buildings, 67 Corporation Street, Birmingham,
Agent for the Applicants.