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Патент USA US2403684

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' 'July 9, 1946,.
E.) w. RICH
'-. '- 2,403,684
Filed Aug. 17, 1944
4 Sheets-Sheet l _
Z’145F577 h./ ‘Pm/v,
July 9, 1946..
E. w. RICH‘
‘ 2,403,684
‘Filed Aug. 17, 1944
4 Sheets-Sheet 2
[ii-HUT h/ fP/c H,
July 9, ‘1946:
5, w. RICH
" 2,403,684
_Filed Aug. 17,‘ 1944
27 3a
37 '
4Sheets-Sheet 5
Patented July 9, 1946
Everett W. Rich, San-Diego; Calif.
Application August 17, 1944, Serial No; 549,948
1 Claim.
(Cl. 123—16’)
The present invention. relates to’ new and. use
' Mounted on top of the housing. 511s‘ ahead- ll)
ful improvements in rotary combustion engines
thatlis preferably divided vertically‘to correspond
of" the type disclosed‘ in my co-pending applica
to the ‘sections of the, housing, the sections‘ of
tfon Serial‘ No. 548',43'7;.?led~August 7, 1944.
the head being similarly bolted together, as at
The primary object of the‘ present invention is 5 ca. Rods ll secure the housing and head sec.
to simplify‘ and improve the construction and
tions in assembled relation.v
operation ‘of rotary. combustion engines" of the
A‘rotary'p-iston. 12' is mounted ec'centricall‘y in
above kind by providing a single rotary valvein
the; housing 5 and» ?xed on one end of ‘a shaft
the engine head, which, rotary’valve is provided
53 which is journaled in an off-center bearing
with the combustion chamber and controls the 1.0 I4' provided therefor in- the' end‘ section 1 of
supply. of explosive charges to the engine housing
the housing 5. .The eccentric arrangement of pis'-‘
for compression, the supply of compressed; charges
ton I2Jin the housing 5. provides the usual cres
from the engine housing'to the combustion cham
centishapedlcompression and power chamber l5 '
ber‘of' the valve, thev discharge of exploded charges
within saidhousing, and slidable through rock
from the combustion chamber into the housing, 15 ing bearings of the piston 12 are radially mov
and the exhaust‘ of spent gases from the housing
able vanes as shown in my above-mentioned co- '
to the exhaust pipe’ of’ the engine.
pending application and in Italian Patent No.
2493539} of July 28', 1926, one of said bearings be
A more speci?c object of the invention is- to
provide a construction 'of the above kind in which
ing indicated at l8! and one of‘ said vanes being
the spark plug for igniting the explosive charges 20 indicated‘ at I‘! in Figure 8;
in the combustion chamber is carried by‘ and
In accordance with‘ the present invention, the
rotates with the rotary valve.
More speci?c features and advantages of. the
invention. will~ become apparent from the follow;
ingv description when. considered. in ‘connection
with the accompanying‘ drawings; and the inven
tion consists in the novel form, combination and
arrangement of parts hereinafter more’ fully de
scribed, shown in the drawings and claimed.
In‘ the drawings, wherein like reference char
head- i n‘is' formed centrally between its sides with
a relatively large horizontal substantially‘ cylin
drical chamber l8, in which is rotatably ?tted a
' substantially cylindrical‘ valve l9.
The cham
ber l8'and valve l9 preferably‘taper‘ slightly from
right'torleft of Figure 4, and‘ the chamber l8
1 is open at the endat the right of said Figure 4.
At this end of‘the ‘chamber l8, a combined intake
and‘? exhaust ?tting 23 is bolted, aslat 2! (Fig. 3)
acters indicate corresponding parts throughout
to the head‘ HJ; which: ?tting‘ includes an" axial
the several views:
Figure 1 is a side elevational view of a rotary
intake; passage 22, and a surrounding exhaust
Figure 2 isa fragmentary top plan view- there
Figure 3v is a fragmentary horizontal. section
to a nipple 30f. fitting-2i]; as ati25, The exhaust
chamber Til/communicates with an exhaust pipe
26'. At the left end of valve l9, as viewed in Fig
taken. on line 3—3 of Figure 1.
ur-es 41 and 7, said: valve is formed with a com
v chamber 23'. Explosive charges are supplied to
combustion engine constructed in accordance‘
the-intake passage 2,2 by means of. a pipe 24 lead
with. the. present invention.
35 ing-from la: suitable carburetor and connected
‘,Figure 4. is a fragmentary vertical section; 40 bustion chamberzl that is closed at. its outer
taken substantially on line. 4-4 of Figure l, with
side by a removable plug. 28" provided onone end
of a tubular shaft 29 journaled in a bushing 38
Figure 5 is an. elevational view of the rotary
threadedin an opening of. the: head It. provided
valve per set
axially'of'the' valve' chamber. The shaft 29 mm
vFigure 6 is a transverse section taken on line 45 ject's. at this side ofv the head. and‘ has a gear: 3|
6--6 of Figure 5.
e '
securedv thereon which. meshes wlth another‘ gear
Figure 7 is aview similar to» Figure 4, but with
3g‘securedon the projecting shaft i301’. the piston
the rotary valve in central longitudinal section.
11?; Obviously; thisprovides a driving means for
Figure 8 is a fragmentary transverse section
the rotary valve when the engine is in'operation.
50 By adjusting bushing 30 outwardly into engage
taken substantially on line 8—8 of Figure '7.
Referring in detail to the drawings, the present
ment with gear 3|, the valve l9 may be drawn
engine includes a housing 5 preferably composed
to the left, of Figure 4 ‘so as to snugly seat said
of an intermediate section 6 and end sections ‘I
tapered valve I9 in its tapered chamber 18. Valve
and ‘la bolted together, as at B, and formed to
l9'is provided on its periphery and at suitable
include base portions 9.
points with packing rings 33, and a lock nut 34
the rotary valve in elevation.
may be threaded on bushing 30 to secure it in
adjusted position. At the other or right end,
as viewed in Figure 4, the valve I9has an axial
hollow reduced portion 35 that is journaled in
the central portion of the ?tting 20 and also
provided with peripheral packing rings. At the
right end, as viewed in Figure '1, the valve I9 has
an axial intake passage 35 and a. second longi
tudinal passage 31 at one side ofv said passage
' ?red in the chamber 21 and the port 4I simul
taneously registers with passage 42 so as to per
mit the expanding gases to pass from the com
bustion chamber into the chamber I5 of the
housing behind the succeeding vane I1 for driv
ing the piston I12. As the piston continues to ro
tate, the valve I9 will have its port 39 registered
with the passage 45, thereby permitting the spent
gases to pass from the housing chamber I5 and
36. The inner end of passage 36 communicates 10 outwardly through the exhaust pipe 26 by way
of passage 31 and chamber 23. The ports of the
with a peripheral arcuate port 33 provided in
valve are in overlapping relation, as shown, so
the valve I9 adjacent the combustion chamber
that when a charge is admitted for compression
21, while the inner end of passage 31 communi
in advance of. one vane, spent exhaust gases are
cates with another peripheral arcuate port 39 of
the valve I9. The valve I9 also has two other 15 being discharged from in front of the other vane.
arcuate peripheral ports 40 and M which com-' - In other words, high e?iciency is had by overlap
ping the ports as do the valve operations of ordi
municate with the combustion chamber 21, and >
nary high speed four-cycle engines. The de
it will be noted that the ports are successively
staggered 90° about the periphery of the valve 7 scribed cycle of operation is rapidly repeated so
I9. Provided in the head I!) and housing 5 is a 20 as to provide a substantially continuous drive for
the power shaft I3, as will be apparent to those
passage 42 located in the plane of the port 4|
skilled in the art.
and arranged to conduct exploded gases from
From the foregoing description, it will be seen
the combustion chamber 21 to the compression
that I have provided a very efficient and simpli?ed
and power chamber I5 of the housing. At the
opposite side of the valve, the head In and hous 25 construction wherein a single rotary valve con
trols ,the- admission of charges to be compressed,
ing 5 has a similar passage 43 located in the plane
the passage of the compressed charges to the com
of the port 40 of the valve and arranged to con
bustion chamber, the passage of the exploded
duct compressed charges from the chamber I5 of
gases from the combustion chamber to the com
the housing to the combustion chamber 21. A
further passage 44 is .provided in the head Iii and 30 pression and :power chamber of the housing, and
the discharge of exhaust gases from the chamber
housing 5 at the same side of the valve as the
of the housing to the exhaust pipe, said single ro
passage 43, and this passage 44 is arranged in the
tary valve further having the combustion cham
plane of the port 38 of the'valve so as to conduct
ber formed therein. Minor changes in details of
fuel charges from the passage 36 to the cham
construction illustrated and described are con
ber I5 of the housing for compression. Still an
templated, suchas fall within the spirit and scope
other passage 45 is provided in the head In and
of the invention as claimed. .
housing 5 at the same side of the valve as the
What I claim is:
passage 42, and this passage 45 is in the plane
In a rotary combustion engine, a circular hous
of the :port 39 of valve I9 for conducting spent
or exhaust gases from the housing chamber I5 40 ing, an eccentric piston rotatable in the housing,
a head mounted on the housing, a single rotary
to the exhaust passage 31 for ultimate discharge
valve journaled in the head and having a com
into chamber 23 and then outwardly through
bustion chamber therein, said head, housing and
exhaust pipe 25.
valve having cooperating ports and passages for
' For igniting the compressed explosive charges
within the combustion chamber 21 at the proper 45 successively controlling the admission of fuel
charges to the housing for compression, passage
intervals, suitable ignition means is provided in
of the compressed charges from the housing to
cluding a, spark plug 45 ?tted and secured within
the combustion chamber for ?ring, passage of
the hollow shaft 29 of the valve I9, said spark
plug having its points exposed within the cham
the exploded gases from the combustion chamber
ber 21 and provided at its outer end with a con .50 to the housing, and discharge of the spent gases
from the housing to the atmosphere, means for
tact head 41 constantly engaged by a brush 48
mounted on the head I3 and connected with the
?ring the compressed charges within the com
ignition wire 49. In this way a constant elec
bustion chamber, and a driving connection be
trical connection is provided between the wire
tween the piston and said Valve, said valve hav
49 and the feed terminal of the spark plug, while
ing two longitudinal :passages in an end portion
allowing the spark plug and valve‘ to rotate in the
thereof, each communicating at its inner end
operation of the engine
, As the piston I2 rotates, the valve I9 is driven
so as to register port 38 with passage 44 and ad
mit an explosive charge to the housing chamber
I5 in advance of one of the vanes I1 of the en
gine. Continued rotation of piston I2 causes
the explosive charge to be compressed, whereupon
the valve I9 will have turned to a position wherein
the port 40 has registered with the passage 43
for admitting the compressed charge from the
housing chamber I5 to the combustion chamber
21. The compressed charge is then immediately
with a di?ferent ‘port of the valve, a ?tting se
cured to the head and including a central intake
passage communicating with one passage of the
valve-and a surrounding exhaust chamber com
municating with the other passage of the valve,
a charge supplying pipe coupled to the ?tting in
communication with the ?rst-named passage of
.65 the latter, and an exhaust pipe leading from the
exhaust chamber of said ?tting.
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