US1722798A - Detachable end frame for engines - Google Patents

Description

July so, 1929. L B, 33mg 4 1,722,798

DETAGHABLE END FRAME FOR ENGINES Original Filed June 18. 1

Patented July 31), 1929.

parts stareestates ernr errat f LEE B. JONES, 0F EVANSVILLE, INDIANA, ASSIGNOR T0 SUNBEAIK ELECTREC MANU- FACTUBIETG COMPANY, OF EVANSVILLRINDIANA, A CORPORATION 0F 11? DIANA.

.D ETACHABLE END 'FR AME FOE ENGINES Application filed. June 18, 1921, Serial No. 47$,6 l. Renewed January 17,1928.

My invention relates to end frames used on prime movers and it has particular relation to a frame which closes one side of an engine crank casing andat the same time serves a number of special purposes which will hereinafter be set forth.

One object of my invention is to provide a frame for closing one side of an engine crank casing; and while I will hereinafter describe the end frame as applied to a particular construction it will be understood that its use is in many other prime movers wherein it is desired to obtain structural and operative characteristics analogous to those hereinafter described. p v

The timing mechanism 7 has associated therewith, on the end frame, make-andreak device which is operatively associated with a spark terior of the frame. 4

A better understanding of my invention, as well asotherobjects thereof, will be apparent by reference to the accompanying drawings;

' in which,

Fig. 1 is an elevational sectional view of the prime mover portion of the power plant described in the above identified co-pending' application, the detachable end frame being shown in operat1ve relation with the remaing der of the mechamsm;

Fig. 2 is a frame showing the interior face thereof; and, Fig. 3 is an elevational view of the end of the crank casing and illustrates the exterior face of the end frame. I V

Referring more particularly to the drawings, one end of the main assembly unit comprises a crank casing 10 in which is journalled a fly-wheel 11. A connecting rod 12 is attached to a piston 13, the latter reciprog v14c of another eating in a cylinder-portion assembly unit 15. Admissmn valves 16 are provided whereby fuel isadmitted from a manifold 17 to a space 18 directly above, and

in communication with, thecylinder 14;. To

the left of the space 18 is formed an ignition pocket 19' at the bottom of which is an exhaust port 20 adapted to be closed by an ex haust valve 21, the latter being reciprocated by a valve rod 22 which is so associated with a spring 23 that it is normally held in closet position. I

coil which is mounted on the e20.

perspective view of the end The connecting rod 12is'not joined to'th e fly-wheel 11 by theusual til-shaped crankbut, as shown, 1s pinned directly thereto at 2%.

A detachable end frame comprises a main ing thereinto and having an interrupter 33 mounted on the end thereof. A breathing device 81 allows air to pass through said cap 31 whereby the oil in the bathat the bottom of the casing is drawn up and around the gears and satisfactorily lubricates the same.

The shaft tending upwardly through the frame and being adapted for abutting contact with the rod 22. On the interior end of the shaft 27 is adjustably mountedacrank 35.which is provided with a forked end 36, the latter 28 also hasmounted thereupon-a cam 28 which actuates a tappet rod 3.4; eX-' being adapted to fit over apin or reduced I portion 37 of the crank pin 24, whereby the crank 35 is rotated. This causes therotation of the shaft 27, and of the intermeshinggears 28 and 80, which, in turn, efiects the recip rocation of therod'3 l and the opening of the exhaust valve 21. It will be noted that-the crank 35 is secured to the end of the shaft 27 by aset screw 38 and it may,ftherefore, have its angular relation with respect to saidshaft varied by loosening said screw. If desired this angular relation can be adjusted from the outside; Moreover, thegset screw adjustment is only illustrative since any other equivalent adjusting and securing means can be employed. A spark coil 39 is mounted on the exterior of; the end frame.

From a consideration of the above described mechanism the operation thereof is more or less apparent. j When it is desired tov vary the relation between the opening of the exhaust valve and the position of the piston I at said opening, the end frame maybe readily detached and the crank 35 adjusted with re spect to the shaft 27 whereupon any desired relation may be obtained. v v

The structure which I have heretofore described is especiallyadvantageous in view of the machine in which I have found its use most pertinent, although, as I hav'eabove pointed out, it should not be understood that I am limiting the use of this structure to internal combustion engines of the type illustrated. Because of the manner in whichthe' relation between the crank and the valve is timed extreme accuracy of alignment is not necessary The yoke or forked end which fits over the reduced portion 37 functions Y even though-there may be some slight deable feature of structure is emphasized in this field. End plates may be substituted, one for the other, without knowledge of valve timing and, in fact, it is the usual practice, when service in'regard to repairs is required, to send the end plate to properly time or adjust the partsl It is obvious that, because the plate can be sent by itself and this very important adjustment made, a great deal of time is saved and in addition the cost of repair is sharply decreased because of the low shipping cost.

While I have described but one embodiment of my invention, many modifications therein mayoccur to those skilled in the art and I desire, therefore, that same be limited only by the showing of the prior art and by the scope of the appended claims.

- Having thus described my invention what I nowclaim as new and desire to secure by Letters Patent, is: p

V 1. In an internal combustion engine, a crank case and means comprising a crank therein, an end frame for said case, a spark coil mounted on said frame,- shafts ournalled interiorly of said frame, a make-andbreak element mounted on one of said shafts" in operative relation withsaid coil, a valve stem actuated by the same shaft, means connectinganotheiishaft with said crank, and

gearing between saidshafts.

2. In an internal combustion engine, a

' crankcase and means comprising a crank and a connecting rod therein, an end frame for said case, a spark coil mounted on said frame, shafts journalled interiorly of said" frame, a make-and-break element mounted on one of said shafts in operative relation wlth said coil,'a valve stem actuated by the same shaft, means connecting another shaft with said crank, gearing between said shafts, and means for varying the relative positions of said valve steinand said rod. 7

3. In an internal combustion engine,v a crank case and. means comprising a crank and a connecting rod therein, an end frame for said case, a spark coil mounted on said frame, a shaft journalled in said frame and having a make-and-break device mounted thereon in operative relation with said coil,a valve stem actuated by the same shaft, a gear wheel on said shaft, another gear wheel'driving said first gear and mounted .on another shaft, a crank connecting said last-named shaft to said rod, and means for varying the relative positions of said valve stem and said rod. a

4. In an internal combustion engine, a crank case and means compris ng a crank and a connecting rod therein, an end frame for said case, a spark coilmounted on said frame, a shaft journalled in sa d frame and having a make-and-breakdevice mounted thereon in operative relation with said coil,

a valve stem actuated by the same shaft, a. 7

gear wheel on said shaft, another gear wheel driving said first gear and mounted on another shaft, a crank connecting said lastnained shaft to said rod, and means whereby said crank may beturned loosely about said second shaft for varying the relative posi tions of said valve stem and said rod.

5. In an internal combustion, engine, a crank case and means comprising a crank and a connecting rod therein, an end frame for said case, a spark case mounted on said frame, a shaft journalled in said frame and having a make-and-break 'device'mounted thereon inoperative relation with said coil, a valve stem actuated bythe sameshaft, a gear wheel onmsaid shaft, another gear wheel driving said first gear and mounted on another shaft, a crank connecting said "last-named shaft to said rod, and means for varying therelative positions of said valve stem and said rod, the axes about which said second shaft and said main crankfrotate be ing coincident.

6. In a prime mover, a crank case, a detachable end frame for the latter having a bracket cast integrally on the interior thereof,

and shafts extending betweenthe body of said frame and said bracket. 7

7 Ina prime mover, a crankcase, a detachable end frame for the latter havinga bracket cast integrally onthe interior thereof, shafts extending between. the body of said frame and said bracket, cooperative gears-positioned on said shafts eXteriorly bf'said frame, and a cap piece covering said gears.

8. In a prime mover, a crank case, a detachableend frame for the latter having abracket east integrally on .theinterior therei of, shafts extending between the body of 7 said frame and said bracket, a coil mounted on said frame, an interruptor device assotachalole end frame ciated with the latter, and a make-and-break device on one of said shafts cooperating with said interruptor device.

9. In a prime mover, a crank case, a defor the latter having a bracket cast integrally on the interior thereof, shafts extending between the body of said frame and said bracket, cooperative gears positioned on said shafts exteriorly of said a coil mounted on said frame, a cap frame,

an interruptor deiece coverin said ears vice mounted on said cap piece, and means on one of said shafts extending 1nto and cooperating with said interruptor device.

10. In a prime mover, a. crank case and means comprising a connecting rod and crank therein, a detachable end frame forsaid case, valve actuating shafts in said end frame,and a crank adjustably mounted on one of said shafts and having a forkedend engaging a portion of said rod.

In witness whereof, I vhave hereunto subscribed my name.

LEE B. JONES.

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