IMPROVEMENTS IN AUTOMATIC STEAM PUMPS
Year: 1884

page_text: I, ALFRED GOZZARD of Britannia Works, Mary Street Sheffield in the County of
York Brass Founder and Steam Fittings Manufacturer etc do hereby declare tho
nature of my said invention for IMPROVEMENTS IN AUTOMATIC STEAM PUMPS
to be as follows:-
To any of the usual forms of Combination Steam Pumps, I add to the Piston or
Pump rod a Collar or Projecting Stud arranged so as to come into contact with
and move a set of Levers attached to or in connection with the Steam distributing
Valve, the said levers having a common Fulcrum, but not the same movements,
so that while the first lever of the set moves constantly with the reciprocating
parts of the Pump, the second lever is only moved just before the end of the full
Stroke is completed in either direction a sufficient amount to enable said second
lever to be further actuated by a weight or spring attached thereto in such
manner as to carry said lever and the Steam distributing Valve instantaneously
through the requisite travel to effect the reversal of the motion of Piston and
Pump etc, the said second lever remaining stationery and the Valve consequently
wide open until near the completion of the Stroke when the process before described
is repeated but in an opposite direction so long as it is desired that the Pump shall
continue in motion.
And to render such Pumps more perfectly Automatic and self starting, to be
worked at variable speeds or stopped altogether by the different levels of liquids
or by the varying pressures of liquids and Gases contained in the Vessols in
connection with such Pumps.
I provide a loaded piston fitted into a Cylinder having at one end a com-
munication with the vessel connected to the Pump, and at the other end connections
with the Stop Valve in the Steam supply Pipe in such a way that whenever a
prescribed difference occurs in the level of the liquids or of pressure of liquids and
Gases, a corresponding movement of the said loaded piston takes place, admitting or
shutting off Steam from the Pump as may be required without care or attention on
the part of the attendant.

page_text: COMPLETE SPECIFICATION.
I, ALFRED GOZZARD of Britannia Works Mary Street Sheffield in the County of
York Brass Founder and Steam Fittings Manufacturer etc do hereby declare the
nature of my invention for IMPROVEMENTS IN AUTOMATIC STEAM PUMPS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
To any of the usual forms of Combination Steam Pumps, I add to the Piston or
Pump Rod a Collar or Projecting Stud arranged so as to come into contact with
and move a set of Levers attached to or in connection with the Steam Distributing
Valve, the said Levers having a common Fulcrum, but not the same movements so
that while the first lever of the set moves constantly with the reciprocating parts
of the Pump the second lever is only moved just before the end of the full stroke is
completed in either direction a sufficient amount to enable said second lever to be
furthe actuated by a weight or Spring attached thereto in such manner as to carry
said lever and the Steam Distributing Valve instantaneously through the requisite
travel to effect the reversal of the motion of Piston and Pump etc, the said second
lever remaining stationery and the Valve consequently wide open until near the
Completion of the Stroke when the process before described is repeated but in an
opposite direction so long as it is desired that the Pump shall continue in motion.
And to render such Pumps more perfectly Automatic and self starting to be
worked at variable speeds or stopped altogether by the different levels of liquids
or by the varying pressures of liquids and Gases contained in the Vessels in
connection with such Pumps.
I provide a loaded Piston fitted into a Cylinder having at one end a communi-
cation with the vessel connected to the Pump, and at the other end connections
with the Stop Valve in the Steam Supply Pipo in such a way that whenever a
prescribed difference occurs in the level of the liquids or of pressure of liquids and
Gases a corresponding movement of the said loaded Piston takes place, admitting
or shutting off Steam from the Pump as may be required without care or attention
on the part of the attendant.
In order that my Invention may be better understood and explained I have
hereunto attached a Sheet of Drawings illustrating what I believe to be the best
and most convenient methods (but not the only methods) of carrying my invention
into practical effect and whereon Fig 1. represents a side elevation of an Automatic
Double Acting Steam Pump. Fig 2 is a front elevation of the same. Fig 3 is an
elevation partly in section of the Cylinder and loaded Piston for controlling the
starting and stopping of Pump.
Like letters indicate like parts in all the Figures. A is the Steam Cylinder
B is the Pump Cylinder Ċ is the reciprocating rod having a suitable Piston
attached at each of its ends. D is a Collar fastened to and moving with Piston
rod C and with its projecting stud engaging into the end of lever E having a
bearing or fulcrum in bracket T Through the boss of the lever E and through
bracket T the Shaft U is made to pass which has a lever F fastened to one of its
ends and another lever G fastened to its other end for the purpose of trans-
mitting motion to the rod J. (although in certain arrangements the lever F may

page_text: be dispensed with and the rod J. may be connected direct to lever G or even to the
valve rod K. H and I respectively are levers for transmitting the requisito
amount of travel to the valve K. L is a Spring having one of its ends fastened
to the bracket T and its other end attached to a suitable stud or projection from
lever G. To prevent the Spring L pulling the lever G too far over, Cushioned
Stops V and V₁ are formed on sides of lever E. M is a lever connected with the
Steam regulator valve and N. N₁ represent rods connecting lever M with lever R
which last lever is also in connection with a loaded Piston Ŏ moving in a suitable
Cylinder P. and to one end of which is attached a Pipe S. communicating with
the vessel into which the liquid or mixture of liquids and Gases is being forced
or supplied. Y Y¹ are adjustible Stops attached to rod J to regulate movement
of valve rod K.
It will readily be seen that on Steam being admitted to Cylinder A by means of
the regulator valve connected with M the rod C with the attachment D will be put
in motion and will carry along with it the long end of lever E against the Stops V
of which lever G is resting, thus also moving the J but no motion of valve rod K
will ensue until the stop Y is brought into contact with lever H or its equivalent,
the determined movement of C will then be nearly completed and the Spring L
will also have been brought over to exert its force on the other side of free
end of lever G and will thus suddenly carry the lever G against second stop Y¹
at the same time completing the travel of valve and rod K thereby giving full
steam to the other end of Cylinder and reversing the Action.
When it is desired to maintain a uniform pressure of the liquids or of a mixture
of liquids and Gases as in the manufacture of Aerated Waters for instance, I
then use a Piston O loaded by means of a spring or weights etc to the required
pressure and working in a suitable cylinder P the supply Pipe of which S is
connected to any part of the apparatus or delivery side of Pump, so that so soon
as the required pressure is exceeded the Piston O by means of the lever R and
rod N, lever M and regulator valve immediately shuts off the supply of Steam,
thus stopping action of the Pump until the pressure again falls to or below the
required amount, whereupon the load on Piston O will secure the re-opening of
regulator valve and the Automatic working of the Pump.
•
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what I
claim is
1st The Application, Construction and Arrangement in connection with Steam
Pumps, of Collars, Levers, Rods, Springs or Weights for the purpose of Distributing
Steam to work such Pumps, substantially as herein described and as illustrated in
the accompanying Drawings or any modification thereof.
2nd The Application, Construction and Arrangement of a loaded Piston and
Cylinder for the purpose of Automatically starting, stopping or regulating the speed
of working Steam Pumps against a uniform pressure or level of liquid etc sub-
stantially as herein described and as illustrated in the accompanying Drawings or
any modification thereof.
In witness whereof I the said Alfred Gozzard have hereunto set my hand (and