Year: 1886

page_text: I, WILLIAM FREDERIC MATTES, residing at Scranton in the County of
Lackawanna, and State of Pennsylvania, in the United States of America,
gentleman, 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
3 by the following statement:-
This invention has for its object to furnish a pump which will do more and
better work with less power than can be done by pumps of ordinary construction.
In the drawings-
Figure, 1, is a longitudinal vertical section on the line, x-x, of figure, 2, the
plunger being shown in a side elevation.
Figure, 2, is a longitudinal horizontal section on the line, y-y, figures, 1, and, 3.
Figure, 3, is a longitudinal vertical section on the line, z-z, figure, 2; the plunger
being shown in side elevation.
:
:
Figure, 4, is a vertical cross section on the lines, p-p, figures, 1, and, 3.
In carrying out my invention I employ two casings or barrels, W₁, W, having
their outer ends closed by suitable caps. They are arranged near to each other &
have their adjacent sides united together, as shown at, Č. Over the inner open
ends an end cap or casing C, is placed & slugly jointed so as to provide a water
passage, L, between them. Casing, W₁, has a water inlet port, S, and casing, W³,
has an outlet port, D.
Each casing has an opening through its upper side. A valve plate Q1, is placed
in & partially closes this opening in casing, W¹, & valve plate, Q2, is arranged in &
partially closes the corresponding opening in the casing, W.
The valve plate, Q¹, has its rear end abutted close against the casing while
between its forward end & the casing a water passage, J, is provided.
The valve plate, Q1, is provided with the valves, E, to regulate the flow of water
through the valve openings, a, formed therein. The valve plate, Q³, is provided
with valve openings, e, closed by valves, F.
.
This plate is arranged so that a water passage, K, is at its rear end instead of at
the front end as with plate, Q. The valve plates, Q1, Q',, and the openings or

page_text: passages, J, K, are covered by domes or caps, X1, X*, whereby valve chambers, C², C³,
are formed.
Through the top of the domes, X1, X³, passages, M³, M', are provided and
connected by a cross pipe, N.
The passage, M', has a valve, E¹, located therein which must necessarily open
upward as the space within the chamber, C, is alternately under compression and
suction thereby preventing air being drawn into said space from the air vessel, O,
whereas the air space within the chamber, C³, is at all times under compression
and the passage, M³, leading thereto from the pipe, N, must remain open and
unobstructed as shown in figures, 1, and, 4.
At or near the middle of the cross pipe, N, an air chamber, O, is arranged. This
air chamber conveniently cushions both pumps and prevents the accumulation of
air in the valve chambers, C³, C³.
Diaphragms T¹, T", are arranged within the barrels or casings, W1, W2. They
are made integral with the barrels or casings, and they are bored through to
receive and hold the sleeves, U₁, U³.
They serve as ties to hold the flat opposite sides of the casings together.
They also support the valve plates, Q1, Q³, and permit the extension of said
plates past the middle point over the sleeves, U₁, U³, as far as may be necessary to
make effective areas of the valve openings provided therein equal to the passages, J,
and, K
The hollow plungers or pistons, A, and, B, are supported in sleeves, U₁, U³, and
are provided with piston rods, R, R¹, and a cross head, H, which is operated by a
well known mechanism and the pistons are given a simultaneous movement.
The piston, A, is provided with valves, D₁, at its forward end and the piston, B,
has valves, G, at its rear end.
The arrows which are alongside of the piston rods, R, R¹, are to indicate that
the pistons are being driven toward the rear ends of the barrels, and the valves, G,
in the plunger or piston, B, and the main valves, F, are closed.
The water is flowing out at the exit port, D, and a fresh supply being drawn
through the inlet port, S, hollow piston, A, valves, D, and, E, & passage, L
The outward stroke being completed the return stroke closes the valves, D',
and, E, the head of the piston, A, forces the water before it & through the
passage, L, &, through the now open valves, F, &, G, & into the chamber at the
rear end of the piston, B.
By the reciprocatory movement of the pistons a continuous current of water is
preserved.
The velocity of the current is, of course, least at the instant of the change of the
stroke but this lessening of velocity is less apparent than in ordinary pumps. At
the moment of change of stroke the force is always sufficiently powerful to cause
a violent shook if suddenly interrupted. Therefore the work which the engine is
called upon to do is, in addition to overcoming the static pressure to accelerate a
current already established & not to overcome the intertia of a body of water.
at rest.
.
In my device the strength of this current is sufficient, under favorable circum-
stances to more than overcome the usual loss backwards through the valves
technically known as "slip."
It will be seen that the passage, L, is formed by the cap, C', which may also
form the bed plate of an engine, the side extension plates, v, being shown partly
broken away. This reduces the cost of construction & permits an interchange of
the two pump barrels, W', W³, so that the outlet port, D, may be placed on either
side of the engine as desired.
This invention is an improvement upon the pumping engines now in use in the
following particulars.
1. It lessens materially the loss of power which occurs at each stroke of the
ordinary engine, by the acceleration of a body of water from a state of rest or
confused agitation to the maximum piston speed.

page_text: 2. It permits the use of higher piston speed, and greater number of strokes per
minute, before the loss of power above mentioned or the usual shock & slamming of
valves is encountered. Hence an engine of given size will develope greater capacity.
3. With a given number and size of valves, the effective valve area is doubled
as compared with the ordinary acting pump, or conversely, with a given effective
area the necessary number of valves is reduced one-half.
4. It permits the valves to be placed in more accessible portions and the size of
the valve plate is greatly increased without interfering with convenience of access
or embarrassing the design.
5. It permits a much more convenient location of suction & delivery pipes &
frees the valve chests from all connection with the latter.
-
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:-
1. The combination with the casing provided with a water port, diaphragms
located within the same, & forming an integral part thereof, a sleeve held within the
diaphragms, the plunger working in & supported by the sleeves, a third diaphragm
integrally formed with the casing & located above the sleeve in the plane of the
bore, & a valve plate & valves arranged above the latter diaphragm substantially
as shown & for the purposes set forth.
°
2. The combination of the casings having direct communication with each other,
plungers working therein, apertured dome shaped caps enclosing one side of the
casing & forming chambers to one side of each casing, a cross pipe connecting the
apertures of the caps & communicating with the chambers, an air vessel connected
with the cross pipe & a check valve located within the cross pipe between the air
vessel & the chambers enclosed by one of the dome shaped caps as and for the
purposes set forth.