US1231927A - Engine. - Google Patents

Description

A. J. MARX.

ENGINE.

5 SHEETS-SHEET 2.

A. J. MARX. ENGINE.

APPLICATION FILED JUNE 30, i916.4 LQLQQT..

5 SHEETS-SHEET a. 4x-

Wmme@ Patented July s, 191?.

A. J. MARX. ENGINE.

A'PPLICATION FILED JUNE 30, |916. 3,

5 SHEETS-SHEET 4- A. J. MARX.

ENGINE.

Patented July 3, 1917.

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orario.

ARTHUR JOHN MARX, 0F LE SUEUR, MINNESOTA.

ENG-mE.

Specification of Letters Patent.

Patented July 3, 191 "7..

Application led .T une 30, 1916. Serial No. 106,683.

hereby declare the following to be a full,-

clear, and exact description of the invention such as will enable Others skilled in the art to which it appertains to make and use the same.' j

This invention relates to rotary explosive en 'nes.

he object of the invention is to provide a rotary explosive engine embodying an improved general construction, an improved system of oiling, an improved ignition system, and an improved system for supplying fuel to the cylinders. f

A further object of the linvention is to provide a rotary -explosive engine of the four stroke cycle type which can be easily assembled, in which the parts are readily accessible and which will be eliicient in operation.

With the above and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which y Figure 1 is a side elevation of a rotary explosive engine constructed in accordance with the invention,

Fig. 2, a vertical section of same,

Fig. 3, a section on-the line 3 3 of Fig. 2

Fig. 4, a section on the line 4-4 of Fig. 3,

Fig. 5, a section on the line 5-5 of Fig. 3,

Fig. 6, a view in elevation of the exhaust cam Fig. 7, an enlarged section of a fragment of one of the cylinders and its piston,

Fig. 8, a section on the line 8 8 of Fig. 9,

Fig. 9, a planV view of a fragment of the engine showing the timing mechanism in section,

Fig. 10, an enlarged section of a fragment of one of the cylinders showing the exhaust valve and outlet connections; and

Fig. 11, a diagrammatic view of the wiring of the ignition system.

Referring to the drawings the invention is shown as comprising a frame A which carries alined bearings 10 and 11. Rotatably mounted in these bearings are the trunnions 12 and 13 of the case 14 of the engine. This case 14 is substantially cylindrical in shape and may be formed of separate pieces for convenience in assembling. The case 14 is provided with a partition 15 having an opening 16 around whlch are provided inner and outer flanges 17 and 18. The flange 18 is rovided with gear teeth 19 for a purpose t at will presently appear. The inner end of the trunnion 13 is provided with a recess 20 in-which is engaged one end 21 of a fixed crank shaft B. The other end of the shaft B is indicated at 22 and extends through a passage 23 in the `trunnion 12. The central portion of the shaft B is U- shaped and includes an arm connecting portion 24. Mounted on the case 14 is a plurality of cylinders C in each of which is slidable a piston D. Pivotally connected to each piston D is a connecting rod E. The inner end of each connecting rod E terminates in an enlarged portion 25 and-these enlarged portions are provided with lateral extensions 26 which are engaged under the enlarged portions of adjacent connecting rods and in this way the enlarged portions 25 are supported out of contactwith the arm connecting portion 24 to form an oil space. Each connecting rod E is provided with a longitudinal passage 27, the inner end of which communicates with the space between the enlarged portions 25 and the arm connecting'p'ortion 24 of the shaft B. The outer end of each passage 27 communicates with a transverse passage 28 in the related connecting rod E and extending through this passage 28 is an arcuate pi e 29 the ends of which are engaged throng the related piston D so as to deliver oil to the wall of the related cylinder C. Each pipe 29 is provided with a slot 30 at its central portion which connects the bore thereof with the related passage 27 so that oil passing outwardly in the passage 27 will be delivered into the bore of the related pipe 29 and then delivered against the wall of the related cylinder as will be obvious. The fixed crank shaft B is provided with oil passages 31 and 32, the former delivering oil between the end 22 of the shaft B and the trunnion 12 of the engine case and also between the end 21 of the shaft B and the flanges 17 and 18 and the wall of the recess 20, it being noted that l branch assages 33 and 34 are provided in the sha -t B for conveying oil to the parts just enumerated. The passage 32 conveys oil to the space between the arm connecting portions 24 and 25 and the inner end of the connecting rod E from when it passes through the passages 27 for lubricating the cylinders C in the manner previously mentioned.

Each cylinder C is provided with an exhaust port 35 which is controlled by a valve 36 normally held closed by a, spring 37. One end of a pipe 38 communicates with the port 35 and these pipes 38 support at their outer end a band 39 which acts as a closure for an exhaust trough 40 mounted on the frame A, it being understood that the outer ends of the pipes 38 open through the band 39. Mounted on the outer end of each cylinder C is a bracket 4l and pivoted on this bracket is a rocker arm 42 one end of which is pivotally connected to the valve 36. The other end of the rocker arm 42 has pivotally connected thereto one end of a link 43 and this link is in turn pivotally y connected to one end of a rocker arm 44 mounted in the case 14. Slidably mounted on the partition 15 is a tappet rod 45 the outer end of which is pivotally connected to the rocker arm 44 while the inner end terminates in a cross arm 46 and one end of the latter projects through an opening 47 in the partition 15 into the space between said partition and the adjacent end of the case 14. Keyed on the end 31 of the shaft B is a collar 48 provided with an arm 49 which carries a stub shaft 50. Rotatable on this stub shaft 50 is a gear 51 which meshes with the gear teeth 19 so that rotation of the case 14 will effect rotation of the gear 51. Mounted on the inner face of the gear 51 is a cam F formed of three arms 52, the ends of which are provided with cam faces 53 adapted for coperation with the cross arms 46 on the tappet rod 45. Formed on the crank shaft B is a holding flange 54 which is also adapted to .coperate with the cross arms 46 in a manner that will hereinafter appear. The arm 49 is provided with a passage 55 which communicates with a passage 56 in the stub shaft 5() and this passage 56 serves to deliver oil between said shaft and the gear 51 and cam F. Mounted in the outer end of the passage 55 is a scoop 57 which, durin rotation of the case 14 causes the oil wit inthe case to move into the passage 55 from where it will work its way to the desired points. It will be noted that the case 14 is provided with a groove 58 in which the scoop 57 travels and as oil will always accumulate in this groove an effective lubrication is had. During the operation of the engine, as the exhaust pipe 38 of the cylinder which is ready to exhaustreaches one end of the trough 40 the related tappet rod 45 is forced inwardly of the cam.

F and the exhaust valve 36 opened so that the gases can exhaust through the trough 40 to the atmosphere. As the cross arm 46 is held by the cam F one end thereof passes under the iiange 54 which latter holds the tappet rod 45 in its inward position during the passage of the pipe 38 through the limit of the trough 40. When the pipe 38 has passed beyond the limit of the trough 40 the cross arm 46 moves out of engagement with the flange 54 and the valve 36l is returned to its normal position by the spring 37. The cam F is so timed that it operates to exhaust every other cylinder during the rotation of the engine. Secured to the inner end of the bearing 4lO is a plate 59 and mounted on this plate and on a downwardly extending arm 60 rigid with the bearing 10 is a carbureter 61 which de- `livers to the inner side of the plate 59.

Rigidly secured to the case 14 is a ring 62 the outer edge of which bears against the plate 59. Mounted between the plate 59 and the case 14 is a filler 63 which in conjunction with the ring 62 forms a fuel intake chamber 64, it being noted that the filler 63 is fixed to the plate 59. Radiating from the ring 62 is a plurality of pipes 65 which communicate at their outer ends with the inlet port 66 vof respective cylinders f C. Each inlet port is controlled by a valve 67 normally held closed by a spring 68, said valve opening inwardly and responding to the suction of the piston D duringr its suction stroke. The arrangement and position of the chamber 64 is such that the pipe 65 leading from the cylinder C wherein the piston is partaking of its suction stroke, is

in communication with the chamber 64 and is therefore supplied with the desired fuel from the carbureter` 61.

Rotatably mounted on the frame A isa 'shaft 69, having fixed thereon a gear 7() which meshes with a gear 71 fixed on the trunnion 12 of the case 14. This shaft 69 is provided with an operating handle 72 whereby the shaft may be manually rotated to effect the starting of the engine as will be obvious. Fixed on the shaft 69 inwardly of the gear is a disk of insulating material 73v surrounded by a. metallic band 74 having spaced projecting contacts 75, three such contacts being shown in this instance as five cylinders are employed in the engine. Rotatably mounted on the frame A and surrounding the inner end of the shaft 69 is a ring of insulating material 76.

which carries ay contactspring 80 to be en# gaged by the projecting' contact' 75 vastlie` 1T, meneer disk` 73 rotates. Also mounted 'on the ring 76 is a binding post. 8 1 the inner end'of.

1.0- nected by a'wirev 85 with the spark plug 86 which carries a spring contact 82gvvhich' `constantly engages the,r lmetallic band'74." .-Mounted on the "frame'- A and insulated.v

therefromA isa contact plate-83 which is adapted to vbe engaged successively by'contacts84 mounted on and insulated from the case 11,4," Each of the contacts 84 is coni of the related cylinder C, The binding post 79 "is connected by a Wire 87 with a coil 88 and-the latter is connected` `by a wire 89 with vthe" contact .plate 83 and by Wire 8.8 Witha-battery 91. The binding post 8l is v connected by'a Wire 90 -with the-batteryl andthe latterisconnected by a Wire 92 :und the vvire 88 with the engine framefAI-to constitute the necessary ground. tation of the disk 7 3 and the band 74is 4so timed that.v an explosion in a given .cyl-

inder will only be eiected every othery time that its contact 84 engages the plate 83.

What is jclaimed'is 1.11; a rotaryengine, the combinationof a ,iixed .cranky a casin rotatably mounted 'von thercrank, a ,plurality of cylmders rigidlyV located] on `the yperiphery 'of said cas-- ing, pistons in thecylinders connected with the crank, an exhaust valve for each cylinder, an arm rigidly mounted on the crank,

a gear rotatably mounted on said arm; a

' gear rigid with the casing and meshing 40 a fixed crank, a casing rotatably*mounted with the gear on the arm, a `cam rigid with the gear on the arm, (and tappet rodsconnected with respective exhaust valv/es `.and ada ted to be operated'A to open saidvalves time cam during rotation of the casing. 2. In a rotary engine, the'combination of on the crank, aplurallty of cyllnders` rig.

.i idly located onthe peri hery of saidv oasder, a frame supporting said crank, anexing,pistons in the cylin ers connected with the crank, an exhaust val've for each cylin-` vhaust trough mounted on the frame, pipes@ l leading from the exhaust' yvalves lrespec-4 tively, an annular ,band supported bythe tree' ends of said pipes. and through which .50' s the 'pipes open, said band `closing the mouthof the exhausttrough,-. and means for` opening` the exhaust' valveA 4of alternatecylinders TheA ro- *1 through saidtransverse passages respecf tively and having their vends enaged through respective pistons, said pipes eing provided With slots whereby their bores are placed 1n communication with respective longitudinal passages, 'and means for supplyingy oilAto said longitudinal passages.

4. ln a rotary explosive engine the combination of a fixed crank, a plurality of cylindei's rotating about the crank, pistons in the cylinders, connecting. rods' pivoted at one end to the pistons, enlargements on the vother lends of the connecting rods, lateral Wings on each-enlargement extending under adjacent enlargements vqhereby the latter'are held in spaced relation to the crank, andclam'ping bands surrounding the enlargements.

5. In a rotary engine, the combination of a'xed crank,v a casing rotatable on the crank, a pluralit of cylinders rigidly lo lcated on the periphery of said casing, pistons in the cylinders connected with the crank, anormally closed exhaust valve for each cylinder, a tappet rod mounted on `the casing and connected with respective exhaust valves, a cam device' mounted on the 'crank and rotated from thev casing to ac- 4tuate the tappet, rods to open the exhaust valves, and a holding flange on the crank adapted to engage and hold the tappet rods in v alve opening position after said rods have been-'operated to open the valvesby the. cam` devices.

ln testimony whereo I ax my signature, in the presence o two witnesses;

\ ARTHUR JOHN Manx,

S. S. Srnmnn, Gnecn l CRoNnN.

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