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Патент USA US2410596

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w. 5, ma.
-
A. c. BRADFORD
SLIDING VANE ENGINE OR PUMP
Filed Nov. 9, 1945 ~
2,43 Q5
Patented Nov. 5, i946
2,410,596.
SLIDING VANE ENGINE on. PUMP
' Aaron 0.- Bradford, Thayer, Mo. _
Application November 9, 1943, Serial No. 509,599
‘
'3 Claims.
(oi. 103-137) ,- '
i
.-
This invention relates to a rotary pump or en
gine, and has for the primary object the provision of a‘ device of this character which will be ex
tremely ef?cient and consists of a minimum num
ber of parts, such as a stator and a rotor includ
ing a slidable abutment or gate of an improved
construction to assure against leakage between
the rotor and stator and still maintain friction
therebetween reduced to a minimum.
.
-
2
>
the body's of the stator as well as with the heads
or end walls 8 to prevent leakage between the
gate or'abutment and the stator.
The. packing i9 is substantially triangular
shaped in cross section so as to tightly ?t the
V‘-shaped grooves and protrudes a limited dis
, tance beyond said grooves to have the stated W11)
ing contact with the stator. ' The'packing i9 is
made up from aplurality of L-shaped strips, the
With these and other objects in view as will 10 ends of which are cut on an angle so that when
become more apparent as the description pro
the strips are assembled in the grooves of the
ceeds, the invention consists in certain novel fea;
abutment or gate the ends of the strips will over
tures of construction, combination and arrange
lap, as shown at 20, effecting an efficient seal be
ment of parts as will be hereinafter more fully
tween connecting or adjacent strips of the pack
15 mg.
described and claimed.
For a complete understanding of my invention,
Thelrotor rotateswithin the stator and during
reference is to be had to the following description
its rotation the gate. or abutment is free toslide
and accompanying drawing, in which
_
relative thereto. so that the packing thereof will
Figure 1 is a side elevation illustrating a pump
maintain a wiping contact with the interior walls‘
or engine constructed in accordance with my in 20 of the statorand it will be seen that during the
vention.
rotation of the rotor any fluid which may be
Figure 2 is a transverse sectional view illustrat
within the chamber ‘I will be forced therefrom by
ing the stator and rotor, the latter including the
the abutment or gate when the latter passes be
- improved construction of abutment or gate.
yond the outlet port and that ?uid will be taken
Figure 3 is a vertical sectional view illustrating 25 into the chamber 1 as the abutment or gate moves
the device
c
away from the inlet port l6,~thereby permitting
Figure 4 is a side elevation illustrating the
the ?uid to be efficiently circulated by the device
abutment or gate.
Figure 5 is an edge elevation illustrating the
gate or abutment. .
Referring in detail to the drawing, the numeral
5 indicates a stator including an annular body 5
in which is'formed. a chamber 1 of substantially
elliptical shape. The stator 5 further includes
if the device is used as a pump and if used as a
compressor or engine substantially the same op
30, erations
occur,
-
While I have shown ‘and described the pre—
ferred embodiment of my invention, it will be
understood that minor changes in construction,
combination and arrangement'of parts may be
made without departing from the spirit and scope
removable end walls or heads 8- provided with in
ternal recesses 9 arranged in opposed relation
and eccentrically of the chamber ‘l and which
" of the invention as claimed.
age- about the shaft.
stator, said packing taking the form of L-shaped
Having thus described my invention, what I
provides seats for rotatably supporting a rotor
claim is:
Ill’ having wiping contact at one point with the
1. In a pump, a stator having inlet and outlet
internal wall of the body 6 of the stator 5 and 40 ports ‘and forming a chamber of elliptical section‘
between inlet and outlet ports designated gen
and having opposite end walls and a curved side
erally by the characters 10 and l l.
wall, a rotor eccentrically journaled in the cham
A shaft 12 is integral with one end of the rotor
ber and having contact with the stator between
l0’ and extends through an opening #3 provided
said ports and provided with a slot, a substan
in one of the heads or end walls 8.) A stu?‘lng
tially rectangular shaped plate slidable in the slot
gland It is provided between said last-named
and having grooves in the edges thereof, and a
head or end wall and the shaft I? to prevent leak
packing arranged in the grooves to contact the
The rotor l0’ includes a cylindrical body l5
strips to fit about the corners of said'plate and
provided with an elongated slot l6 extending 50 having their adjacent ends beveled for overlap- ‘
therethrough to slidably receive an abutment or
ping, all of said edges of the rectangular plate
gate ll substantially rectangular ‘shaped, the
having grooves formed therein and the beveled
edges of which are provided with substantially v
overlapping ends of said. packing strips bein'g dis- '
shaped grooves 58 to accommodate packing l9
posed in the intermediate part of each of said '
adapted to have wiping contact with the Wall of 55 edges, so that the packing strip portions on the
3
2,410,596
opposite side edges of the plate are disposed inv
contact with the end walls or the stator and of
the slots in the rotor and the other packing strip
portions on the other opposite side edges of the
plate are in contact with the curved stator wall.
_
2. In a pump or the like, a stator having inlet _
4
. i
.
ranged within the groove‘that the beveled over
lapping ends lie within the portion of said groove
‘ intermediate the walls thereof and the opposed
ends ?t about the complemental edges or said
groove.
‘
3.~ In a pump, a stator having inlet and outlet
ports and iorming a chamber of elliptical section
and having opposite end walls and a curved side
wall, a rotor eccentrically Journaled in the
a curved side wall, a rotor eccentrically journaled
in said chamber and having contact with the 10 chamber and having contact with the stator be
tween said ports and provided with a slot, a sub
curved side wall of the stator between said ports
stantialhr rectangular plate slidable in said rotor '
and provided with a slot having opposite end
slot and having V-shaped grooves in its edges and
walls ‘each ?ush with an end wall of the stator,
coactlng with the walls of the pump chamber and
a substantially rectangular plate slidable in said
slot and having grooves in its edges and coact 15 including opposite edges each of which passes
over said ports in succession, said plate forming
ing with the interior of the chamber and includ
expanding and contracting ?uid spaces, and a
ing a pair of opposite edges; each of which passes
packing mounted within each of said grooves,
over said parts in succession and forming ex
saidpacking taking the form of substantially L
panding and contracting ?uid pumping spaces,
'and a packing mounted within each- of said’ 20 shaped strips having their adjacent ends beveled
to overlap one another and of a cross-section
grooves, said packing taking the form or substan
and outlet ports and forming a chamber of el
llptical section and having opposite end walls and
tially L-shaped strips having their adjacent ends
beveled to overlap one another and being so are
r
conforming to a groove of said plate.
I
AARON C. BRADFORD.
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