Improvements in or connected with Pumping Apparatus.
Year: 1895

page_text: Date of Application, 23th Nov., 1835
Complete Specification Left, 26th Aug., 1896-Accepted, 21st Nov.. 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pumping Apparatus.
I, JAMES GRIEVE LORRAIN, M. Inst. E.E., M.I. Mech. E., of Norfolk House,
Norfolk Street, Strand, London, W.C. in the County of Middlesex, Chartered Patent
Agent, do hereby declare the nature of this invention (as communicated to me by
Thurs Gustaf Rennerfelt, of 439 Henry Street, Brooklyn, New York State, Mechanical
Engineer, and Robert Lundell of 527 West 34th Street, Brooklyn, New York State,
Manufacturer, both in the United States of America) to be as follows
:-
My invention relates to the operation of liquid or fluid pumping or compressing
apparatus by electric motors and consists of the combination of suitable pumping
mechanism with an electric motor in a self contained apparatus in which the pumping
cylinder and magnet core are united in a single mechanical element.
My invention further consists of the devices and combinations of devices herein-
after set forth.
The object of my invention is to produce an apparatus of the above class of
compact form and minimum weight, the electric parts of which are protected as
far as practical. In my invention as now contemplated an energizing field coil
surrounds the magnet core or pole piece. A second field coil may be placed
around the other pole piece but I do not consider the same essential to the successful
operation of the apparatus.
A frame suitable to support the working parts of the motor may form a part
of the magnetic circuit being preferably formed in two sections or parts made
integral with the respective pole pieces and bolted or otherwise suitably secured to,
each other. The frame may form a water tight casing which encloses the armature,
commutator and field coil and protects the same from water and dust.
In practice I have provided journal boxes for the shaft which are formed upon
removable plates which are fitted to apertures in the frame and suitably held in position.
The apertures are so arranged that by removing either of the said plates the
armature may be removed through the same.
A series of pumping cylinders constructed of suitable magnetic material may be
placed in the magnetic field of the motor of which they may form a part.
In one form of my invention which I shall term my first form the cylinders
are united in a single casting which is made integral with the pole piece, and in
a modified construction which I shall term my second form the cylinders are formed
in a single casting which is bolted or otherwise suitably secured to the field frame
herein before mentioned and in such manner that the magnetic lines of force shall
have the benefit of the iron in the cylinder casting.
In the cylinders work plungers or pistons which are connected by connecting rods
with cranks formed on a crank shaft, the arrangement being such that a rotation
of the said crank shaft produces a reciprocation of each of the plungers.
The cranks are conveniently placed at an angle of substantially 120 degrees with
each other.
The shaft may be conveniently mounted in suitable bearings in brackets projecting
from the cylinder casting.
In the first form of my invention the crank shaft may conveniently be driven by
the motor by means of connecting mechanism consisting of a gear mounted on and
rotating with the armature shaft and in mesh with a gear mounted upon another

page_text: shaft supported in suitable bearings in the frame and carrying at its opposite end
a gear which meshes with another gear of the crank shaft.
Delivery and suction passages communicating with a passage which communicates
with the cylinder may be employed.
The delivery valve and the suction valve may be of any suitable form, further
description whereof in view of the prior art is regarded as unnecessary herein.
An important feature of the present invention is a water tight shield which is
projected over the field coil and preferably over the armature and commutator of
the motor and protects the same from water. This shield may form a part of the
frame hereinbefore described but it might be readily otherwise arranged and used
with good advantage in constructions having other forms of magnetic frames.
It is to be noted that by the arrangement of the water passages as mentioned
1 secure the cooling effect of the water, as it enters and leaves all the cylinders in the
magnetic field which is of great advantage in apparatus of this class. It is also to
be noted that by arranging each piston to be actuated by connected mechanism
common to all the pistons I avoid duplication of parts and greatly simplify the
construction.
Dated this 26th day of November 1805
Improvements in or connected with Pumping Apparatus.
I, JAMES GRIEVE LORRAIN, M. Inst. E.E., M.I. Mech. E., of Norfolk House,
Norfolk Street, Strand, London, W.C. in the County of Middlesex, Chartered Patent
Agent, do hereby declare the nature of this invention (as communicated to me by
Thurs Gustaf Rennerfelt, of 439, Henry Street, Brooklyn, New York State, Mechanical
Engineer, and Robert Lundell of 527, West 34th Street, Brooklyn, New York State,
Manufacturer, both in the the United States of America) and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
My invention relates to the operation of liquid or fluid pumping or compressing
apparatus by electric motors and consists of the combination of suitable pumping
mechanism with an electric motor in a self contained apparatus in which the pumping
cylinder and magnet core are united in a single mechanical element.
My invention further consists of the devices and combination of devices hereinafter
set forth and claimed.
The object of my invention is to produce an apparatus of the above class of
compact form and minimum weight, the electric parts of which are protected as far as
practical.
The present invention is illustrated in the drawings herewith submitted in which
Figure 1 is a sectional view of an apparatus embodying the present invention taken
on line y-y Figure 2.
Figure 2 is also a sectional view of same taken on line x-x Figure 1.
Figure 3 is a sectional view showing a modified form of the present invention
taken on line y 1-y 1 Figure 4.
Figure 4 is a section on line x 1-x 1 Figure 3.
Similar letters of reference refer to similar parts throughout the several views.
In the drawings A represents the armature of the electric motor, B its commutator
and (; the energizing field coil which as shown surrounds the magnet core or pole
piece D. E represents the other pole piece around which a second field coil may be
placed but I do not consider the same essential to the successful operation of the
apparatus, and have not deemed it necessary to illustrate the same in the drawings.
L represents a frame suitable to support the working parts of the motor and which
as shown forms a part of the magnetic circuit being preferably formed in two sections

page_text: or parts made integral with the respective pole pieces and bolted or otherwise suitably
secured to each other. The frame L as shown forms a water tight casing which
encloses the armature, commutator and field coil and protects the same from water
and dust.
In practice I have provided for the shaft a the journal boxes a 1, a 1, which are
formed upon removable plates a 2, a 2 which are fitted to the apertures a 3, a 3 in the
frame Land suitably held in position. The apertures a 3, a 3 are so arranged that
by removing either of plates à 2, a 2 the armature A may be removed through the
same.
S, S, S, represent a series of pumping cylinders constructed of suitable magnetic
material and placed in the magnetic field of the motor of which they form a part.
In Figures and 2 of the drawings the cylinders S, S, S, are shown as united
in a single casting which is made integral with the pole piece D, and in the
modified construction shown in Figures 3 and 4 of the drawings the cylinders S, S, S
are shown as formed in a single casting which is bolted or otherwise suitably
secured to the field frame hereinbefore described and in such manner that the
magnetic lines of force shall have the benefit of the iron in the cylinder casting.
I desire to say in this connection that the object of the modified construction
shown in Figures 3 and 4 is to facilitate the construction of the magnetic frame
and cylinder casting of different materials.
In practice I find it desirable to make the magnetic frame (including the pole
pieces) of cast steel or wrought iron, thereby securing certain well known advan-
tages. The cylinder casting may be of common cast iron or any suitable magnetic
material.
In the cylinders S, S, S work the plungers or pistons F, F, F which are connected
by the connecting rods f, f, with the cranks G, G, G, which are formed on the
crank shaft G1, the arrangement being such that a rotation of the crank shaft G 1
produces a reciprocation of each of the plungers F, F, F.
The cranks G, G, G are conveniently placed at an angle of substantially 120 degrees
with each other to secure an even operation of the apparatus and prevent pounding
or vibration in the apparatus.
The shaft G 1 may be conveniently mounted in suitable bearings in the brackets g, g,
projected from the cylinder casting.
In the form of my invention shown in Figures 1 and 2 I have shown the crank
shaft G 1 as driven by the motor by means of connecting mechanism consisting of a
gear a 4 mounted on and rotating with the armature shaft a and in mesh with a
gear p mounted upon a shaft P, supported in suitable bearings in the frame L and
carrying at its opposite end a gear p 1 which meshes with a gear g 1 of the crank
shaft G 1.
In the form of my invention shown in Figures 3 and 4 of the drawings the
gears p and p 1 and the shaft P are omitted but such variation is immaterial and
other modification of the connecting mechanism shown can be readily made by one
of average skill in the art without any departure from the essential features of the
present invention.
T, T1 and T2 represent water passages, T being the delivery passage, T2 the
suction passage and both of said passages communicating with the passage T1
which communicates with the cylinder S.
K represents the delivery valve and H the suction valve which may be of any
suitable form, further description whereof in view of the prior art is regarded as
unnecessary herein.
In Figures 3 and 4 I have shown a modified valve arrangement providing a
double delivery valve K, K and a double suction valve H, H, but such variation is
immaterial and other variations can readily be made by one skilled in the art and
involve no departure from the present invention.
An important feature of the present invention is the water tight shield which is
projected over the field coil C and preferably over the armature and commutator of
the motor and protects the same from water. As shown the shield forms a part of

page_text: the frame L hereinbefore described but it is evident that it might be readily other-
wise arranged and used with good advantage in constructions having other forms
of magnetic frames.
The operation of my improved pumping apparatus will be readily understood from
the foreging description of the form and arrangement of the several parts. It is to
be noted however that by the arrangement of the water passages as shown I secure
the cooling effect of the water, as it enters and leaves all the cylinders, in the
magnetic field which is of great advantage in apparatus of this class. It will also
be noted that by arranging each piston to be actutated by connected mechanism
common to all the pistons I avoid duplication of parts and greatly simplify the
construction.
I desire to say that I am aware of the state of the art as shown in Letters Patent
of the United States issued to Van Depoele No. 496331, April 25, 1893 and
No. 461295, Oct. 13, 1891, also Sprague No. 372824, Nov. 8, 1887, also Buell
No. 344344, and I claim nothing shown or described therein.
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. In an electric pumping apparatus the combination with the associated parts of
a pump and electric motor of a pumping cylinder and magnet core united in a
single mechanical element, and a magnet yoke made integral with the core and
surrounding the field coil and armature, and mechanism actuated by the motor for
driving the pump, substantially as described.
2. In an electrical pumping apparatus, the combination with a revolving armature,
of a hollow pole piece, a piston therein, and connected mechanism actuated by the
armature for actuating the piston comprising a plurality of rigid connecting bars,
substantially as described.
3. In an electrical pumping apparatus, the combination of a pump and an electric
motor in a self contained apparatus in which the pumping cylinder and magnetic
core are united in a single mechanical element, mechanism for actuating the pump,
and a pitman connection between the same and armature, substantially as described.
4. In an electrical pumping apparatus, the combination with a revolving armature,
of a hollow pole piece, a piston therein, connected mechanism actuated by the
armature for actuating the piston, a field coil, and a yoke or keeper forming a water
tight shield for the coil, substantially as described.
5. In an electrical pumping apparatus, the combination with a revolving armature,
of a hollow pole piece having a water way and cylinder therein, a piston working
in the cylinder, aud a driving connection between the armature and piston, substantially
as described.
6. The combination with associated parts of an electric motor, of a magnetic frame
enclosing the field coil and armature, a pumping cylinder in magnetic connection
with the frame, a piston in the pumping cylinder and connected mechanism driven by
the motor for actuating the piston, substantially as described.
7. The combination with associated parts of an electric motor of a suitable
magnetic frame, a series of pumping cylinders formed in a single piece of magnetic
material, and suitable connections with the magnetic frame of the motor whereby
the field of the motor is strengthened by the magnetic material in the cylinders,
pistons working in the cylinders and means actuated by the motor for actuating the
pistons, substantially as described.
8. The combination with associated parts of an electric motor of a suitable
magnetic frame, a series of pumping cylinders and water passages communicating
therewith formed in a single piece of magnetic material, and suitable connections
with the magnetic frame whereby the field of the motor is strengthened by the
magnetic material in the cylinders and cooled by the passage of the water, pistons
working in the cylinders, and means actuated by the motor for actuating the pistons,
substantially as described.

page_text: 9. The combination with an electric motor, of a series of pumping cylinders located
in and forming a part of the field magnet, a piston working in each cylinder and
connected mechanism driven by the motor and common to all the pistons for
actuating each piston, substantially as described.
10. The combination with an electric motor of a series of pumping cylinders.
located in and forming part of the field magnet, a piston working in each cylinder,
a single crank shaft for actuating all the pistons and connected mechanism driven
by the motor for actuating the crank shaft, substantially as described.
11. In an electrical pumping apparatus, the combination with the associated parts.
of an electric motor, comprising a suitable field magnet, of a series of pumping
cylinders formed of magnetic material and in magnetic connection with the field
magnet, whereby the field of the magnet is strengthened by the magnetic material
in the cylinders, pistons in the cylinders, and means actuated by the motor for
actuating the pistons, substantially as described.
12. The combination with an electric motor, of a series of pumping cylinders of
magnetic material located above the motor and in magnetic connection with the field,
a water tight shield projecting over the field core of the motor, pistons in the
cylinders, and means actuated by the motor, for actuating the pistons, substantially
as described.
13. The combination with an electric motor of a series of pumping cylinders and
water passages communicating therewith located in and forming a part of the field
magnet, a piston working in each cylinder and connected mechanism driven by the-
motor for actuating the pistons, substantially as described.
Docil
1900
J. G. LORRAIN,
Chartered Patent Agent.