US1577006A - Bed casting for gas engines - Google Patents

Description

March is 1926 15%008 E A. WATTS BED CASTING FOR GAS ENGINES Filed Nov, 19, 1924 4 s t $heet 1 O HV'VENTOR.

E L MEI? 4. 14 6 7715 A TTGRNEYS.

March 16 1926.

E. A. w 'TTs BED CASTING FOR GAS ENGINES March 16 1926. 1,577,006 E. A. WATTS BED CASTING FOR GAS ENGINES Filed Nov. 19, 1924 4 sheets-sheet s A TTORNEYS.

March 16 1926.

E. A. WATTS BED CASTING FOR GAS ENGINES Filed Nov. 19 1924 4 s t -sheet 4 Patented Mar. 16, 1926.

UNITED PATENT OFFICE.

ELMER A WA T misrsmermm omogassienos T was MILLER M Rd -ED GAS ENGINE COMPANY, or seame -m), 011m, 'A CORPQBATION 01* 0am BED m m 'FoR GAs ENGINES,

A' plis ti fil wov mb 9, 9 Serial no. mais- To all whom may concern:

Be it known that I, Emyrnn A. Urns, a citizen of the United States, residing at Springfield, in the county of Clark and State ofQOhio, have inventedcertainnew and useful Improvements in Bed Castings for Gas Engines, of which the rollowirig is a specification, reference being had therein to the accompanying drawing.

My invention relates to internal combustion'engfnes and in particular to an integral bed casting therefor.

It is the object of my invention to provide a single unitary} integral casing in an internal combustion engine for use as the support for the cylinder valve mechanism, nk h fi fly h l and C IJ' P S U 80 r ang d hat t ente of gra ty il be r hstr n be dire t d a on h majo axis o h ca ing, an h th ll e 110 eakes 9 fra tu e O t part due o ns h h ar' iwf ecsommod m It is a further object to provide in a single casting all of the essential supports for all of the material portions of the engine so that the parts will be aligned and stay in alignment which is not the case when'jthe engine is built up of a plurality of parts "bolted or otherwise joined together.

It is a further object to provide a single casting which can be economically produced not only when it is cast but whenit is machined. The casting of my invention is" so designed that it may be machined in three directions simultaneously thus enabling large'size engines to be produced on an economical production basis'.

It is essential in such an engine which-is subjected to high pressures and temperatures and which usuallycarries other unit-s sud; as ecenip e or th t the b ting-b designed to take the strains along the major ax sl it o denser oft is 's l ils bf any e hepar' s It. s furth r s nt a Wei h a 1s ass P'Q tha these n in 15. e ht he 1 A possible is a great ad '66- *be noted esteem liners, so that dilierent sizes of cylinders and different sizes of compressors may be employed without modifying the main casting thus greatly'econornizing in production, as

this single common unit isthe base for the construction of varying capacities of englues. 7 p

It is further desirable to so construct this basic casting member that it may be one of a series of similar units which may be joined in pairs or otherwise to form unitary engmes.

ways easily cleaned of this accumulation.

Vrthth'ese and other objects in view, thedrawings illustrating this invention are as follows :1-

Figure 1 is a side elevation of the complete casting with the detachable bearing in place;

Figure 2 is a bottom plan view;

Figi'ire 3 is a top plan view;

Figure 4 is asectionon the line 4l of Figure 3;

Figure 5 is an end elevation from the valve end-of the engine;

Figure 6 is an end elevation from the compressor end Figure 7' is'asection' on the line 77 of Figure 3, looking in the direction of the rr ws;

Fa ureS i's a sect-i9 onthe line 8 8 of:

Figure 3 look-ing' in the directionof the arrows.

--"Referring to the drawings in detail, it will the castings distributed about 1" I thatallinoying move along his inapr a: 'sso that distributed- -iin the Tenal y ar se. per- 1: 1" de' "9011- tion, a

till

wheel portioln and a. portion for guiding the compressor link and piston or cross head.

'lurning to the cylinder portion, 1 designates a cylindrical portion of the casting having an enlarged head 2 for receiving the casing 3 containing the valve mechanism as more :lully set forth in my copending application Sci. No. USA-80.

This ci'ilarged head 2 is provided with a series of spaced internally extending; abutments or ribs l which are distributed about the periphery of the cylinder to act as sup ports for the detachable cylinder liner, the

other end of which is supported by the internally extending," integral ring, 5. An opening 6 is provided in the top of this casing 1 to which is litted a connection. This opening permits of access to the space between the cylinder liner and the casingl in which cooling fluid circulates.

The second portion oi the casting is desigi'tated 7. It substantially cylindrical save to) a rectangular opening 8 the purposes of which will be hereinafter described.

The base oi this portion 7 designated 9 is flat and is provided with the ribs 10 for sup porting the slides which support the end of the piston rod to the end of the pltman con nected with the crank of the main shaft oi the engine upon which the av wheel is mounted. Thus the support for the reciproeating parts aligned with the cylinder and the crank sha'tt ot the engine hi s an integral support with the cylinder and with the support for the crank shat't an opening 8 perinits oi: the ready access to these reciprocatin s parts for either withdrawal or renewal as well as adjustment and for the detaching of the piston rod from the piston asset forth in my copending apliilication, Ser. No. Tina-2n.

In fiu'thcring, this idea there provided a third portion oi' the engine which constitutes the support for the crank shaft, pitmen and [iv wheel. A, U-shaped opening" is provided as at it for receiving the detachable blurring; blocks l2 carrying the crank shaft in the aperture 13. .i\ cap plate 1 L held in position by the bolts serves to s-iumort this crank shaft. The casting is luoadeued at this point as at 16 to form an aperture hearing; and supporting surface for the ct nh shaft. This enlarged port-ion of the casting; also it ans a housing; 16 for the l ears \vhieli are located in the space I will be noted thatthe hearings for crank shaft may therefore be littedout h: lily when desiretl without disturbiir the t oi the engine. l hoc-ranl't shaft in lo rated approviulately central y at the mass constituting the casting. A cup can be titted on the top oi the-openingS to enclose the lily wheel and the reciprocating parts.

The fourth portionotthe casting is substantially cylindrical and is designated l8. It provides the upper ribs 19 and the lower ribs which act as quides for the slide block carrying the end of the compressor piston rod and the pitinan. A hand held in the side of the casting as at 21 is provided for the usual purposes. The end of the casting is enlarged as at for receiving the castings oi? the compressor cylinder that the compressor may be detachably mounted on the end of this unitary support ing' casting. It will be noted also that the third portion of the casting below the crank shaft is extended downwardly in the se1nicircular portion marked to give the requisite clearance for the crank on the fly whee shaft and to also provide an oil well for supplying lubrication. A casting is pro vided with the threaded aperture 2% from which a pipe leads for conveying the lubricent.

The entire casting is provided with side flanges 25, side walls 26 and 27 which are turned over to form the feet 28. A diagonally disposed transverse rib 29 is formed between these side walls and provided with a foot 30. This rib arranged as to take the thrust of the reei nocating parts. A series of transverse arch shaped ribs extending from side wall to side wall are also provided such as 31, 3:2, 33 and 3 1-.

On the outside of the engine there are provided a, plurality of bosses or collars 35 for receiving the bolts which attach the engine bed to the usual concrete foundation.

()n the outside of the engine bed provided a vertical base 36 which is the outside ot a casing 37 containing the valve mechanism for the engine and serving as a support therefor.

Referring to Figure 7, it will be noted that the casing snrrouiuling the internal combustion engine cylii'ider and substantially cylindrical with exception to the lower ortion which is provided with an opening at the bottom of the casing marked 87. This opening bordered by the wall 38 on the one side and. a dowmvardly extend int: apron on the other. This apron merges with one 0]. the side walls 3.5 of the base of the engine. A. passageway marked l-O is provided. from this water circulation chainher to the outside of the tnigine. it plate is mounted on this open mouthed pa ssageway to normally closeit, but it will be observed thatany sediment or foreign mate rial maysettleto the bottom of the water circulation passageway. pa down the apron it?) and e nuoved through the opt-1r in it). xl'he engine has alz-zo formed in tegrally therewith the passae'eways all. 42?. and These passageways torin chambers for theintroduction 0t air, the introduction oi tuel. andthe passage of carbureted fuel ill) th1ou ghthe passageway marked at in Figure 5 into the valve casing whence the car'- bureted fuel 1s passed through the valve and cylinder-head into the cylinder carried with the minimum of joints necessary and with the 'minimumof danger of breakage or fracture due to varying temperatures and pressures.

The top of the casting 18 is providedwith a rib to further strengthen it along the backbone.

It will be understood that I desire to comprehend Within my invention such modifications as may be necessary to adapt it to varying conditions of use.

Another important object of my invention is the locating of a bolt 46 beneath the portion of the casting which receives the hearing and upon which great weight and considerable thrust is placed.

This bolt 46 ties the two slots of the castingtogether, thus taking the thrust to some degree and distributing it at a point of great strain throughout the remainder of the integral bed casting.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In an internal combustion engine, an integral casting consisting of an internal combustion cylinder portion, a guide portion for the internal combustion piston rod, a supporting portion for the crank shaft and fly wheel, a guide portion for a compressor cylinder pistoinineans on said internal combustion cylinder portion for supporting a cylinder liner in spaced relation thereto, a plurality of transverse ribs, said walls and end walls integrally connecting, bracing and supporting said several portions of the casting.

2. In an internal combustion engine, an integral casting distributed about the major axis of movement of the reciprocating parts consisting of a cylinder casing portion, a bed for guiding and supporting the reciprocating parts of the internal combustion piston, a portion for furnishing bearings forv "the crank shaft of the engine, and a portion for guiding the piston rod of a compressor attached to said engine, said casting being provided with supporting walls to form a unitary base tied together by integral ribs.

In an internal combustion engine, an integral casting distributed about the major axis ofmovement of the reciprocating parts consisting of a cylinder casing portion, a bed for guiding and supporting the reciprocating parts of the internal combustion piston, a portion for furnishii'ig. bearings for the crank shaft of the engine, portion for guiding thepiston rod of a compressor attached to said engine, said casting being provided with supporting walls to form a 'inita'ry b'a'se tied together by integral ribs, a fourth portion of said ribs arched from all to wall of the base supporting the main portion of-the casting on the ground of the arch and another portion of the braces being diagonally disposed to form an abut- 11 161113 120 take the thrust from the moving parts directly into thefoundation on which the engine-rests.

-l. In an internal combustion engine, a unitary casting consisting of supporting side walls, a cylinder casing mounted thereon, transverse ribs tying said walls and cylinder casing to one another, and a downwardly and outwardly extending apron forming a passageway for the exit of foreign material from the interior of the cylinder to the exterior of the casting, whereby the space between the cylinder casting and av cylinder liner may be drained when desired.

In an internal combustion engine, a unitary casting consisting of supporting side walls, a cylinder casing mounted thereon, transverse ribs tying said walls and cylinder casing to one another, a downwardly and outwardly extending apron forming a passageway for the exit of foreign material from the interior of the cylinder to the exterior of the casting, whereby the space between the cylinder casting and acylinder liner may be drained when desired, and other portions of said casting formed into chambers for use as manifolds and as supports for carburetor mechanism.

6. In an internal combustion engine, a single unitary casting of substantially the same general diameter throughout, substantially equally distributed about the major axis of the engine along which the reciproeating parts have their line of movement, a lateral extension midway of said casting to serve as a support for the bearings for a transverse crank to which the reciprocating parts of the engine are connected, means in said transverse portion for forming a housing and bearing support for the timing gears associated with said crank and engine, said side extension being cut away in a U-shaped aperture for receiving the detachable hear ing for supporting said crank.

7. In an internal combustion engine, a single unitary casting of substantially the same general diameter throughout, substantially equally distributed about the major axis of the engine along which the reciprocating parts have their line of movement, a lateral extension midway of said casting to serve as a support for the bearings for a transverse "crank to which the reciprocating parts of the engine are connected, means in axis of the engine along which the reciprocating parts have their line of movement, a lateral extension midway of said casting to serve as a support for the bearings for a transverse crank to which the reciprocating parts of the engine are connected, and a bolt located fore and aft in said lateral extension of the casting engaging the fore and aft walls thereof for tying the said Walls together and distributing the strains therethrough.

In testimony whereof, I atlix my signature.

ELMER A. WATTS.

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