US1229590A

US1229590A - Rotary gas-engine.

Info

Publication number: US1229590A
Application number: US9977016A
Authority: US
Inventors: George Samuel Dawe
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-05-25
Filing date: 1916-05-25
Publication date: 1917-06-12
Anticipated expiration: 1934-06-12

Description

G. S. DAWE. ROTARY GAS ENGINE. APPLICATION FILED MAY 25. I916- Patented June 12, 1917.

4 SHEETS-SHEET I.

G. S. DAWE. ROTARY GAS ENGINE. APPLICATION FILED MAY 25, I916- Patented June 12, 1917.

4 SHEETS-SHEET 3.

e. s. DAWE. ROTARY GAS ENGINE. APPLICATION FILED MAY 25, I916- Patented June 12, 1917.

.4 SHEETS-SHEET 4.

GEORGE SAMUEL DAWE, OF PLYMOUTH, ENGLAND.

E0 TARY GAS-ENGINE.

Specification of Letters Patent.

l atented June 112, 1191?.

Application filed May 25, 1916. Serial No. 99,770.

The present invention relates to rotary engines and more particularly to a rotary engine of the internal combustion type and the invention seeks to provide a rotary gas engine of this type which will be of but few parts and which will be strong, durable and etlicient when in use.

A further object of the invention is to provide an engine of this character which will be of good balance thereby eliminating a great deal of the vibration.

A. further object of the invention is to provide a rotary engine of the type' aforesaid wherein the rotors or pistons of the engine will at the proper time draw in a suitable supply of an explosive mixture, and compress the same preparatory to its discharge.

'With'the above and other objects in View,

which will hereinafter appear as the description continues, the invention consists of the novel features of construction and the formation of parts as will be hereinafter more fully described and particularly pointed. out in the appended claims.

in the accompanying drawings is shown the simple and preferred formof the invention it being, however, understood that no limitation is necessarily made to the precise strrmtural details herein exhibited but the right is hereby reserved to any changes or alteratixims that may be had and come within the scope of the invention without departing from the spirit thereof or sacrificing the efficiency of the same.

in the accompanying drawings;

Figure l is a side elevation of the rotary engine embodying the invention having portions thereof broken away to better illustrate a portionof the interior construction;

Fig; 2- is a vertical longitudinal section through L the same Rig. 3 is a horizontal section taken on the line 3'3 of Fig. 9

Fig. 4 is a vertical transverse section taken on the line H of Fig. 2; v

Fig. 5 is a detail plan view of the piston and driving shaft; and,

Figs. 6 and 7 are detail diagrammatical views to more clearly illustrate the stroke of the engine during one complete revolution.

Referring now more particularly to the drawings wherein like and corresponding parts are designated by similar reference characters throughout the several views.

The casing including a portion of the engine forming the subject matter of the present invention is divided up into two sections indicated by the numerals 1 and 2 being connected bya stationary partition 3. Formed integral with the stationary parti-' tion 3 is an annularly extending ring 4 whichrests between the inner flanges 5 of the sections 1 and 2 and the three are connected together by means of the bolts 6. The sections of the casing l and 2 have formed integral therewith supporting legs 7 upon which the engine is mounted and these legs are arranged adjacent to each end of each section. The outer ends of the sections 1 and 2 are provided with flanges 8 to which are connected by means of the bolts 9 the flanges 10 of the end walls 11 which close the ends of the casing.

Rotatably mounted within the end walls 11 and the central partition 3 is the main driving shaft 12. This shaft 12 is supported by i the cone shaft bearings 13 threaded within a socket formed within each of the end walls 11 and check nuts 1:1 retain these bearings in place. Also arranged within the sockets formed within the end walls 11 at the rear of the cone bearings are gland rings 15 and packing 16 is also arranged within each of the said recesses which is kept tight by the cone bearings resting against a spiral spring 17 also arranged within the said recesses. Whereas l have shown and described a particular bearing for the shaft 12 in each of the end walls 11 it is of courseto be understood that any suitable bearings may be used. A fly wheel 18 is carried by one end of the shaft and a small pinion 19 is carried by the opposite end of the shaft. This pinion 19 meshes with an idler 20 supported upon the bearing shaft carried by one of the end blocks of the casing and the idler 20 meshes with a large gear 22 carried by a longitudinally extending shaft 23 which and 2 and the purpose of this shaft will be v driving shaft 12.

hereinafter described.

Slidably mounted upon the shaft 12 is a sleeve 25 but this sleeve is keyed to the shaft 25 by means of the key 26 extending longitudinally of the shaft whereby the said sleeve may slide longitudinally upon said shaft but will be caused to rotate therewith. This sleeve 25 is adapted to slide within the partition 3 and'is provided with packing rings 27 so as to prevent any leakage of the explosive gas or exhaust from either cylinder of the engine. Carried by each end of the sleeve 25 are the rotors or pistons 28. These pistons lie parallel with each other but are arranged at an angle of about 5'0 with respect to the driven shaft 12 These pistons 28 travel within the spaces formed between the end walls 11 and the central partition 3 and divide each space up into two cylinders in each of which takesplace the compression and explosion of the explosive mixture. The space at the left hand side of the engine is divided by means of the piston traveling in that space into explosive chambers A and B whereas the space at the right hand side of the engine is likewise divided up into the explosive chambers U and I).

The central partition 3 as will be noted in Fig. 2 of the drawings is of greater width at its upper end than at its lower end and its side walls at their medial. portions are inclined at an angle of 50" and are parallel with the side Walls of the pistons. llncircling these centrally inclined portions of the partition 8 are flattened faces 2) which are perpeildicular to the base of the engine and extend at right angles to the driving shaft 12. The inner faces of the end walls 11. are also inclined in an opposite direction to the adjacent inclined faces of the partition 3 and arealso adapted to lie parallel with the side faces of the pistons 28. Tlncirclingthe inclined portions of these end walls 11 are flat annular faces 30 which also lie in a perpendicular plane and at right angles to the lhe opposite side walls of each of the pistons 28 adjacent their. peripheries are provided with flat annular faces 31 which are adapted to coii'icide during their revolving operation with the flat annular faces 29 and 30 and these annular faces also lie in a plane at right angles to the driving shaft 12 when the pistons or rotors are connected thereto. Encircling the outer peripheries of the pistons 28 are packing rings 32- which engage with the inner peripheries of the sections of the casings 1 and 2 and prevent leakage from either of the explosive chambers. Encircliing the sections 1 and 2 of the casing arewat er jackets 33 which provide a cooling medium for the cylinders and may be connected in any preferred or well known manner to a water cooling system. Whereas I have shown and described a water cooling system for the cylinders. it is of course to be understood that any conventional form of air cooled system may be applied to the sectionsof the casing for cooling the cylinders which is common and well known in the art of explosive'engines.

Arranged within the partitions 11 and opposite side walls of the partition 3 are re ceses in which are mounted the rollers 3e: and 35 and which rollers are adapted. to rest upon the flat faces 31 of the pistons 28 dur: ing their entire operation. lVhen an explosion takes place on one side of the piston pressure would be exerted upon the roller which bears upon the opposite face of the piston to which the explosion takes place. The path adjacent to this roller being inclined at an angle of about 50 to the shaft axis, the piston must necessarily give way to the pressure exerted on it and due to its cam shape it will be caused to revolve. The

center of the pistons during the revolving of the same slides in alongitudinal direction upon the shaft but one point of each piston is prevented from this sliding movement as it passes between the rollers 34: and Whereas in the drawings I have shown a single roller resting on each side of each piston it is apparent from such construction that-the wearing efficiency would be increased but these rollers only show a conventional form of an antifriction device which may be substituted therefor and as .such antifriction devices would not form the 'sub ect-nuitter of the present invention and are well known to those-skilled withinthis art it is thought to be unnecessary to go further into details of such constructions but the

rollers

34 and 35 will assist in better illustrating the principles of the invention.

Leading to each of the explosive chambers A, B, C and D are the intake and exhaust ports 36 and 37 respectively. These intake and exhaust ports lead to the explosive chambers adjacent the medial portion thereof as better illustrated in Fig. 4 and the inlet port is in communication with the vertical passageway 38. Leading from this passageway 38 is a passageway which is connected to any suitable source of supply for feeding the explosive mixture to the combustion chamber. Arranged within the channel-way 38 is an ordinary inverted mushroom valve 40 having extended there from and through the upper end of the casing a valve rod ll whereby upon the depression ofthe valve rod the valve 1-0 will be opened and communication established between the pasageways 38 and 39 whereby the explosive mixture may enter the inlet port 36 and then into the explosive chamb r and 45 whereby they maybe depressed and the valves connected thereto opened. The cams 46 and the arrangement of the

gears

19, 20 and 22 may be such that a proper timing mechanism will be accomplished for permitting the entrance of the explosive gases to each explosive chamber at the proper time and at the proper time permit the exhaust gases from the explosive chambers to escape to the atmosphere. Leading to each of the explosive chambers are the.

spark plugs'l'i which are also connected to any suitable source of energy and timing de-' vice whereby the explosion will take place at the proper time in each explosive chamber.

The operation of the invention will be best understood with the following descrip tion having reference to Figs. 6 and 7 of the drawings; when the proper supply of explosive mixture has been admitted within the chamber A and compressed, the chamber B- will during the compressing operation within the-chamber A draw in a new supply of gas while the exhaust gas contained within the chamber C will be exhausting and the firing of the explosive mixture will take place in the chamber D. Upon the next quarter revolution the firing will take place in chamber A as shown in Fig. 7, compression will take place in chamber B, the drawing in of a newsupply of explosive mixture will take place in chamber C and the burnt gases contained within chamber D will be forced from the chamber and exhausted. Upon the next fourth revolution the chamber A will exhaust, fir.- ing will take place in chamber B, compression will take place in chamber C and the drawing of a new supply of gas will take place in chamber I). In the last quarter of the revolution the chamber A will draw in a new supply of explosive mixture, the chamber B will exhaust the burnt gases contained therein, firing of the explosive mix ture will take place in chamber C while compression will take place in chamber D. This action takes place throughout each revolution of the pistons. It is of course to beunderstood-that the' timing mechanism is to-be brought into play at the proper time for causing the explosive mixture to explode &

within the chambers It will also be noted I from Figs. 6 and 7 that due to the cam construction of the pistons 28 the sleeve 25 will be moved in a longitudinal direction upon the shaft 12 thereby causing a portion of the pistons to travel laterally Within spaces formed between the partition 3 and the end walls 11 thereby causing the burnt gases to be forced from the chambers and the new supply of combustible mixture to be coinpressed Within the chambers prior to'explosion. Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An internal combustion engine comprising a sectional casing, a partition dividing the sections of the casing and connected therewith, a shaft journaled within said casing, a sleeve slidably mounted upon said shaft, each of the said sections having a chamber formed therein, the opposite ends of said sleeve terminating within said chambers, a piston carried by-each end of said sleeve and arranged at an angle .of about 50 therewith, said pistons adapted to revolve within said chambers, an inlet and exhaust ort-leading to said chambers at each side 0 said pistons, valves arranged within said inlet and exhaust ports, and a timing mechanism connecting said shaft with said inlet and exhaust valve'swhereby upon the rotation of said shaft the valves will be.

operated substantially pose set forth.

2. An internal combustion'engfine comprising a cylindrical casing, a partition aras and for the purranged within said casing forming a-chamrigidly connected to the opposite ends of said sleeve and adapted to revolve within.

said chambers and means whereby upon the rotation of said shaft the pistons will be caused to jointly slide upon said shaft for the purpose specified.

4. A rotary internal combustion engine comprising a casing, a partition for dividing said casing into two chambers, the end walls of the casing and the side walls of the partition being inclined, a shaft journaled within said casing, a sleeve keyed to said shaft and adapted to slide thereupon, a piston carried by each end of said sleevev and adapted to revolve within said chambers, whereby upon the rotation of said shaft the opposite faces of said piston will lie parallel with said inclined Walls when adjacent thereto substan tially as and for the purpose specified.

5. A rotary internal combustion engine comprising a cylindrical casing, a partition for dividing the sections of the casing into chambers, a shaft journaled Within said casing, pistons slidahly mounted upon said shaft and adapted to revolve Within said chambers, inlet and exhaust ports leading to said chambers on each side of said pistons, valves arranged Within Said inlet and exhaust ports, a timing shaft journaled upon said casing and operatively connected to the 5 first mentioned shaft, and cams carried by said timing shaft adapted to actuate said valves substantially as and for the purpose set forth.

In Witness whereof I have hereunto set 26 my hand.

JAMns M. DAvisoN, ANNIE Gossn.