Improvements in Pumps.
Year: 1891

page_text: Date of Application, 3rd Nov., 1891
Complete Specification Left, 21st July, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pumps.
I, PAULIN FABRE of St. Etienne, in the Republic of France, Engineer, do
hereby declare the nature of this invention to be as follows:-
:-
This apparatus comprises two semi-circular pump-bodies in the shape of two
halves of a hollow ring. An air-tight partition separates the one from the other,
thus forming the double pump-body in which the pistons reciprocate. Both these
pistons are supported by the same beam swinging with the rocking spindle which
carries it.
It will be seen that if an alternate rotary motion be imparted to this spindle, one
of the pistons will thereby be caused to exercise a sucking or exhausting action and
the other a forcing action. To obtain this result the front part of the said spindle
is shaped into or provided with a square whereon is fitted a beam each end of which
is provided with a hook engaging with another hook belonging to a stirrup-shaped
device having a pedal.
The pedal is pivotted on a pivot projecting from the arm of the wheel-barrow-
shaped carriage upon which the pump is erected.
The square spindle-end is supported by suitable bearings.
The suction-pipe is connected with the feed-reservoir.
Valves are provided
which by their special arrangement enable one orifice to be used for each pump-body
both for suction and discharge.
The two valves are placed one above the other within a box. The upper valve
is provided with a hollow spindle within which the spindle of the lower valve is
adapted to move. Below these valves, there is a suction-orifice, and above them,
there is the discharge orifice. Between the two is the opening or port connecting
the valves with the pump-body.
It will thus be seen that according as the valves are acted upon by the pistons
either the one valve or the other will rise and allow the liquid to pass.
The connections may be made in any convenient manner.
It is sufficient to place one foot on each of the pedals and to press them down
alternately by a rocking motion to the right and left to obtain water under
pressure.
Dated this 3rd day of November 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
.
COMPLETE SPECIFICATION.
Improvements in Pumps.
I, PAULIN FABRE of St. Etienne, in the Republic of France, 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 will be best understood by reference to the accompanying drawings
in which
Figure 1 is a front view and Figure 2 a side elevation on a smaller scale of my
improved pump which I intend introducing under the name of "Velo-pump."
One half of the apparatus (taken from the central line A B Figure 1) is the
exact counterpart of the other half and therefore one half only of figure is an
elevation, while the other half is a section.
This apparatus comprises two semi-circular pump-bodies CD Figure 1 and c¹ c¹
| Price 8d.

page_text: Figure 2, in the shape of two halves of a hollow ring. An air-tight partition E F
separates C from D thus forming the double pump-body in which the pistons G
reciprocate. Both these pistons are supported by the same beam H H swinging
with the rocking spindle J.
It will be seen that if an alternate rotary motion be imparted to this spindle J,
one of the pistons will thereby be caused to exercise a sucking or exhausting action
and the other a forcing action. To obtain this result the front part of the said
spindle J is shaped into or provided with a square K whereon is fitted a beam L
each end of which is provided with a hook M engaging with another hook N
belonging to a stirrup-shaped device Q having a pedal P.
To avoid unduly complicating the drawing all parts of this pedal are not shewn
in detail in Figure 1, but they clearly appear in Figure 2 where it may be seen
that the pedal is pivotted on a pivot R projecting from the arm of the wheel-barrow-
shaped carriage upon which the pump is erected.
The square spindle-end K extending between S and S¹ Figure 2 is supported by
two carriers or chairs U V consisting of flat iron bars, the former U being
preferably an angle-iron with a groove, and the latter V forming a bearing.
At X is arranged the suction-pipe which by means of another pipe is connected
with the feed-reservoir. At Y are arranged valves which arrangement necessitates
only one orifice Z being used for each pump-body both for suction and discharge.
Figure 3 shows this invention on an enlarged scale. The two valves A and B
are placed one above the other within a box. The upper valve A is provided with
a hollow spindle C within which the spindle D of the lower valve is adapted
to move. Below these valves, at G, there is a suction-orifice, and above them
at F there is the discharge orifice. Between the two at E is the opening or port
connecting the valves with the pump-body.
It will thus be seen that according as the valves are acted upon through E by
the pistons either the one valve B or the other A will rise and allow the liquid to
pass. It is only necessary therefore to connect G with the exhaust X, E with the
pump-body and F with the air-reservoir W, Figure 2, to cause water to be conveyed
into the latter under pressure.
These connections may be made in any convenient manner.
It is as will be understood sufficient to place one foot on each of the pedals P
and to press them down alternately by a rocking motion to the right and left to
obtain water under pressure.
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 particular application of the weight or power of the human body to
the operation of a pump substantially as described and illustrated in the
accompanying drawings.
2. The combination with the vibrating arm of a circularly reciprocating pump of
pedals such as P having a free fulcrum at R and connected by finks with the arm
substantially as described and illustrated in the accompanying drawings.
3. The combination with a frame such as 6 having handles c and wheel a of a
pump such as described and pedals such as P for operating it the whole constructed
and operating substantially as described and illustrated in the accompanying
drawings.
4. The arrangement of pump valves A and B accessible by the removal of cap J
substantially as described and illustrated in the accompanying drawings.
W. P. THOMPSON & BOULT,
Agents for the Applicant.