US1427984A - Internal-combustion engine - Google Patents

Description

L. L.TURNEY. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY ZZ 1920.

Patented Sept. 5, 1922.

3 SHEETS-SHIEET 1.

L. -L. TURNEY. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY 22.1920. 1,427,984, Patented Sept. 5, 1922.

3 SHEETS-SHEET 2.

Illl!!! L. L. TURNEY. INTERNAL COMBUSTION ENGINE.

- APPLICATION FILED JULY 22,1920.

Patented Sept. 5, 1922. I 3 SHEETS-SHEET 3- KN 51mm H N 1 1!) mm Q mm. Q Q Q M. G 1 MM Rh A 25::

Patented Sept, 5, 11922,

L. TUMEY, 0F MINNEAPOLIfi MINNESOTA.

rurannst-consusrron enema.

Application filed July 22, 1920. Serial No. 398,161.

To all whom it may concern:

Be it known that 1, LEE lL. TURNEY, a citizen of the United States, and resident of Minneapolis, in the county of Henne in and State of Minnesota, have invente a certain new and useful improvement in Internal-Combustion Engines, of which the following is a full, clear, concise, and exact.

ing it much safer to use than is the ordinary engine of this general class, wherein the several parts of the engine hereinbefore mentioned are exposed.

A salient feature of the present invention is the provision of means whereby I am enabled easily and securely to retain the fly-wheel of the engine upon and in driven relation to its associated crank shaft.

Other features of novelty will appear as the foliowing description progremes.

In the accompanying drawings illustrating my invention Figure 1 is a longitudinal vertical sectional view of an engine embodying the improvements of my invention, this view being taken on the line 1-*-1 of Figure 2.

Figure 2 is a transverse sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a side elevational view of the engine with the side cover plate of the crank case removed, this view illustrating certain parts of the charge-forming mechanism in'section, the view being taken on the line 3-3 of Figure t.

Figure 4 is a fragmentary sectional view taken on the line 4% of Figure 3.

Figure 5 is a fragmentary detail View taken on the line 5--5 of Figure 2.

Figure 6 illustrates a modified connection,

between the fly wheel and crank shaft that ma be employed if desired.

imilar characters of reference refer to similar parts throughout the several news.

The engine ofmy invention comprises the cylinder 10, jacket 11, hopper 12, and crank case 13, all preferably cast in one piece, as

shown. At 14 is shown the water-cooled cylinder head which carries the usual spark plug, the suction operated intake valve 15 and the mechanically operated exhaust valve 16. The crank case comprises one side wall 13" which forms part of the one piece'casting hereinbefore mentioned, this side wall being provided with a crank shaft bearing as clearly shown in Figure 2. On its opposite side that portion of the one piece casting which constitutes the crank case is provided with an opening through which the crank shaft and its associated mechanism may be inserted, this opening however being closed by a removable side cover plate 17 which is bolted to a plate 18 which in turn is bolted to the crank case casting as shown in Figure 3. The plate 18 comprises an annular rim and a web 18 which provides bearings for the crank shaft, and which also supports the magneto 19, the exhaust valve timing gear 20, and the'centrifugal governor mechanism indicated as a whole by the reference numeral 21. It will be noted that the cover plate 1? is provided with a central opens mg 22 through which a crank may be in- 1 sorted to start the engine, this opening, however, being provided with a hinged closure plate 23.

The crank shaft illustrated at 24 has its trunnion portions carried in the bearings afforded by the fixed and removable crank case sides as previously explained. That trunnion'which extends through the fixed crank case side 13 is provided with a pulley 25 which is slipped over the end of the crank shaft and is rigidly held in position in any suitable manner.

Dis osed immediately adjacent the crank case side 13* is the fly-wheel 26 which is retained upon and-in driven relation to the crank shaft by novel means now to be explained... Because of the construction of my engine and the disposition of its several parts, it is impractical to attach the fly wheel to the crank shaft b Woodruff or other key of t e types comused for this purpose. It will be monl noted that one of the crank portions lies immediately adjacent the right side of the flywheel (Fig. 2) and that this crank portion isprovided with a slot which is cut through the said crank portion and along that per means of a tion of the crank shaft journal whereon the fly-wheel is fitted. This slot registers with a slot in the inner surface of the fly-wheel hub. A key 27 is driven into these registering slots from the right (Fig. 2) and is preferably held against displacement by peening the metal of the crank portion over the end of the key as is clearly shown in Figures 2, 1, and 5. This arrangement constitutes a very effective means for securing the fly-wheel to the crank shaft and is of particular advantage in the engine of my invention because of the fact that the key is accessible from the right face of the flywheel (Fig. 2).

The piston 28 is operatively connected with the crank shaft by piston rod 29 and while generally speaking the construction of these parts and the manner of their connection may be conventional, I prefer to provide the piston with a duct 30 which leads inwardly from a recess 31 formed in the outer surface of the upper portion of the piston to the end that oil collected; in said recess, as the piston reciprocates, may drop down by gravity into a recess 29 in the piston end of the piston rod from whence it passes inwardly to a suitable duct to lubricate the piston pin bearing. The cylinder is conveniently supplied with lu-' bricant from a sight-feed oil cup indicated at 32.

The magneto 19 is bolted or otherwise rigidly secured upon the plate 18 at a point directly above the crank shaft bearing and the magneto armature shaft is provided with a spur gear 33, which meshes with a gear 34 keyed upon the crank shaft at a tegral with the cam 35 which in turn cooperates-with a follower roller 36 provided at one end of the exhaust valve'operating rocker arm 37. The rocker arm extends through an opening in and is pivoted to the crank case and has its exposed end disposed directly under the exhaust valve stem, so that movement imparted to the rocker arm at the proper time in the engine cycle may cause appropriate operation of the exhaust valve. A spring 38 interposed between the rocker arm and the under side ofthe cylinder jacket normally holds the follower roller 36 in engagement with'its co-operating cam 35. plied to the right hand vcrank shaft bearing (Fig. 2) and to the bearin of gear 20 through suitable passages. leading from grease cup 39, while the left hand crank shaft bearing (Fig. 2) is supplied with lubricant from a grease cup 40. Access to the several parts contained within the crank case may be had through an opening 41, which is normally closed by a cover plate Lubricant is supf 43. The cover plate 43 is normally removably held in position by any suitable means, as, for instance, by the sprin arm 42. These spring arms when disposed transversely of the opening 41 hold the cover in position, but may be turned longitudinally .of the opening to permit ready removal of a fuel supply tank, a fragment of which is shown at 48. This tank is preferably of the flat, shallow type. and'is ordinarily disposed between the parallel beams whereon this type of engine is ordinarilv mounted. The supply of combustible mixture from the induction passage to the combustible mixture-intake 49 is controlled by a reciprocating throttle valve 50. The throttle valve 50 is provided at that end thereof .nearest the fuel port with a V-shaped notch which extends through an opening in the crank case and is attached to one end of a bell crank lever 53, mounted at 54 upon a shaft carried by the plate 18. A spring 55 acting between the small arm of the bell crank and an adjusting screw 56 carried by the removable plate 17, normally urges the bell crank in a counter-clockwise direction (Fig. 4). This tendency of the spring 55 is however normally offset by the spring 57 associated with a governor plunger 58. When the engine is operating, the governor weights 59 59 determine the position of the plunger 58, increasing the compression of the spring 57 as the engine speed increases and thereby permitting the smaller spring 55 to hold the bell crank 53 and its connect ed throttle valves in such positions that the pre-determined speed of the engine is maintained. I

It will be noted that the magnetoand its timing gear as well as the exhaust valve operating gear and the governor mechanism are mounted upon and removable with the plate 18. By reason of the fact that the device for attaching the fly-wheel to the crank shaft is accessible on that side of the flywheel next adjacentthe crank, it is possible for me to detach and remove the crank for inspection, replacement or repair, without wheel next adjacent the crank and is securely held in position upon the fly-wheel by the nut 61. The pin engages in a recess in the adjacent face of its associated crank portion when the crank shaft and fly-wheel are assembled, as shown in Figure 6. This engagement of the pin 60 with the crank affords a very effective driving connection between the crank shaft and fly-wheel and affords practically the same advantages-as have been ascribed to the form of fly-wheel connection illustrated in Figures 2 and if desired, the crank portion with which the pin 60 co-o'perates may be provided with a s screw 62 which may be tightened down upon the pin prevent axial movement of the crank shaft independent of the fly-wheel. The set screw is, of course, readily accessible through the top of the crank case.

Having thus described my invention, what l claim is new and desire to secure by Letters Patent of the United States is:

An internal combustion engine comprising a cylinder, a crank case closed on one side and. open on the other side, magneto, governor and valve operating mechanism, a plate for said open side providing means for mounting the magneto, governor and valve-operating mechanism, a crank shaft in said crank case mounted in said plate at one end and in the closed side of the crank case at the other end and extending through the said closed side to. provide means for driving attachment, a fly wheel in said crank case mounted on said crank shaft with one face thereof lying adjacent a cheek of the crank portion-of said crank shaft, registering slots in said crank cheek and the hub of said fly wheel, a key having a driven-fit in said slots and having its outer end lying adjacent the outer endjof the slot in said crank cheek, the metal ofsaid crank cheek being peened over the outer end of the key to prevent displacement thereof.

2. An internal combustion engine comprising a cylinder, a crank case closed on one-side and open on the other'side, magneto, governor and valve operating mechanism, a plate for said open side providing meansfor mounting the magneto, governor and valve-operating mechanism, a crank shaft in said crank case mounted in said plate at one end and in the closed side of the crank case at the other end and extending through the said closed side to provide means for driving attachment, a fly wheel in said crank case mounted on said crank shaft with one face thereof lying adjacent a cheek of the crank portion of said crank shaft, registering slots in said crank cheek and the hub of said fly wheel, a key having a driven fit in said slots and having its outer end lying adjacent the outer end of the slot in said crank cheek, the end of the slot in said check adjacent the end of the key being closed to prevent displacement of the key.

3. An internal combustion engine comprising a cylinder, a crank case closed on one side and open on the other side, a plate for said open side, a crank shaft journaled in said plate and the closed side of said crank case and removable transversely of the crank case when said plate is removed, a wheel in said crank case mounted on said crank shaft between the closed side of said crank case and a cheek of the crank, registering slots in said crank cheek and the hub of said fly wheel, a key fitting in said slots and having'its outer end lying adjacent the outer end of the slot in said crank check, the metal of said crank cheek being peened over the outer end of the key to prevent displacement thereof.

a. An internal combustion engine comprising a cylinder, a crankcase closed on one side and open on the other side, governor and valve operating mechanism for said engine, a plate for said open side providing means for mounting the governor and valve operating mechanism, a crank shaft in said crank case mounted in said plate at one end and in the closed side of the crank case at the other end, a fly wheel in said crank case mounted on said crank shaft with one face thereof lying adj acent a check of the crank portion of the crank shaft, and means adapted to interlock the crank cheek and fly wheel to afi'ord a driving'connection between the crank shaft and flv wheel. I

In witness whereof, l hereunto subescribe my name this 17th day of July, 1920.

LEE L. TURNE Y.

Witnesses:-

E. A. Mon, CHAs. J. MILLER.

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