Improvements in or applicable to Hydraulic Force-pumps.
Year: 1890

page_text: Date of Application, 24th Jan., 1890
Complete Specification Left. 24th Oct., 1890-Accepted, 29th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Hydraulic Force-pumps.
I NIEL MCDOUGALL of 4 and 5 Victoria Buildings St. Mary's Gate Manchester
in the County of Lancaster Civil Engineer do hereby declare the nature of this
invention to be as follows:-
This invention relates to portable force pumps employed in testing the strength of
steam boilers and similar structures and for other purposes.
The objects of the invention are
1. To lighten such pumps so as to increase their portability, and
2. To render them capable of being more readily applied to the work they are
required for.
In the first place I make the pump in the vertical form and I bolt it to a bed plate,
preferably of steel which forms the bottom of a light tank or cistern, which tank by
preference I make of light steel or other metal in cylindrical form.
This tank thus serves the purpose of a case to contain the pump, and its accessories,
vizt., delivery hose, handles spanner etc. and it is provided with a hinged lid, and also
with a handle whereby it may be carried.
The suction valve to the pump is open to the interior of the tank, so that no suction
pipe is required.
The pump is so constructed that the whole of the parts can be turned, or otherwise
machined, thus securing the greatest possible strength, on the least weight of
material.
In the second place I either make the delivery hose, hell mouthed, for its permanent
attachment to the pump at one end, and to a union joint at the other, the body of the
hose in this case being reduced to the least possible diameter, or I may make the
delivery hose parallel and insert it into a grooved socket at either end securing it with
a ferrule driven into the inside of the hose.
All that is necessary upon arriving at a place where the pump is to be used is to
open the lid, attach the delivery hose to the boiler or other structure requiring to be
tested and fix the handle for working the pump.
A sufficient quantity of water is then poured into the tank and the pump can be set
to work at once.
To enable the pump to be fixed to a tressel plank or other support, lugs are
attached to the base of the tank to enable it to be firmly screwed down by means
of coach screws.
I may place the pump barrel either horizontally, obliquely, or vertically in the
tank.
Dated this 23rd day of January 1890.
COMPLETE SPECIFICATION.
Improvements in or applicable to Hydraulic Force-pumps.
I NIEL MCDOUGALL of 4 and 5 Victoria Buildings, Manchester in the County of
Lancaster, Civil 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 improvements principally in the arrangement of portable
hydraulic force pumps such as are generally used for the purpose of testing by water
pressure the strength of steam boilers and similar structures.

page_text: The objects of the invention are first, that the pump may be made of light
construction and thus increase its portability; secondly that the pump and accessories
may be so arranged as to be readily adapted for use.
The invention consists in so arranging and constructing the pump and its accessories
that it may be mounted inside, and attached to the base of a case or tank of light
construction preferably of cylindrical form and designed with a strong base of sheet
steel or other stiff material.
The tank is closed with a hinged lid and provided with a handle whereby it may
be carried, and it will contain the pump and its accessories riz. :-the delivery hose,
detachable handle spanner &c.
The manner in which any invention may be performed and carried into practical
effect will be readily understood on referring to the two annexed sheets of drawings
and the following explanation.
On the drawings two different arrangements are shown. Figs. 1 and 3 are
sectional views shewing the pump a and case bas when ready for being carried from
place to place, and Figs. 2 and 4 are full views with the hinged lid c thrown open,
the handle d'attached, and the delivery hose e ready for coupling up as when the
pump is in action.
The pump may be worked by a lever d* as shewn on Figs. 1 and 2 (Sheet 1) or
directly as shewn on Figs. 3 and 4 (Sheet 2).
The pump is so constructed that the whole of the parts can be turned or
machined, and thus great strength is secured with the least weight of material.
The suction valve f to the pump a is open to the interior of the tank b so that
no suction pipe is required.
The delivery hose e is attached to the pump at one end and to a union joint ex at
the other, by means of a screwed conical joint as shown on the accompanying
drawings.
All that is necessary upon arriving at a place where the pump is to be used is to
open the lid c attaching the delivery hose to the boiler or other structure requiring to
be tested and fix the handle d for working the pump a.
A sufficient quantity of water is then poured into the tank and the pump a can be
set to work at once.
To enable the pump to be fixed to a tressel plank or other support, lugs b* are
attached to the base of the tank to enable it to be firmly screwed down by means of
coach screws.
I may place the pump barrel either horizontally, obliquely or vertically in the
tank b.
There is a handle c* upon the lid c (or it may be upon any convenient part of the
case b) for carrying the apparatus from place to place.
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 1
claim is :-
A hydraulic force pump, for testing steam boilers and similar structures permanently
fixed in a tank b which forms a vessel for containing the water when in use and is
also provided with a suitable lid and handle or handles so as to form a convenien
casing for containing the pump and its detachable handle, delivery pipe, and other
accessories, and for conveying the same from place to place substantially as herein
before described and illustrated by the annexed drawings.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.