US1551437A

US1551437A - Steam engine

Info

Publication number: US1551437A
Authority: US
Publication date: 1925-08-25
Anticipated expiration: 1942-08-25

Description

Aug. 25, 1925.

A. C. STALEY STEAK ENGINE Filed Sept. 26 1921 To all whom t may concern:

Patented Aug. 25, 192.5.

UNITED STATES ALLENFC. STALEY, or nA FAYETTE, INDIANA.

` a, STEAM ENGINE.

Application sie@ septemberze, 192'1. serial No.v 503,469.

Beit known that I, ALLEN C. STALnY, a citizen of the United States yof America, and resident of the city of La AFayette,in the county of Tippecanoe, State of Indiana,

have invented new and useful Improvements f in Steam Engines, of which thefo-llowing is a specification. 'f This invention relates to single acting steam engines as applied particularly tov ,automotive apparatus, rather than to stationary use-where vdevices for oil and water separation maybe easily applied, as space and weight are of little relative importance in the latter, while in the former these are generally a matter of serious import.

In practice, it isvery' desirable to rsecure the manifold advantages of the s-ingle acting Y high 4speedV automobile type vof engine used in internal combustion enginedcars, owing to compactness, high power weight ratio,"and Aease of production by machine ltools de- K veloped for use by the gas'` car industry.

Owing, however, tothe fact that heretofore itfha'ssbeen practically impossible to prevent water and steam from blowing past I the pistons V,and enteringv the cranlcase, vwhere the resulting contaminationof the oil by the. water and condensedfsteain, either Vcreates an emulsion causing failure of the lubricationvsystem, or in cases where special lated water at vfrequent intervals is an'v annoyance notY acceptable to modern autop' y f the (drawings,r thesleeveG has a flange Aattached` to the upperfpart of the crankcasebemobile standards and requirements.

l This water accumulates', first'upon 'starting from cold when large quantities seep' past the piston,yho=wever well fitted'and eonf structed, and enter the Vcrankcase and lubrication system. Also, owing to the high difference in pressure existing between the top and bottom of the pistons while the engine is operating under power load, a continual leakage of steam, however minute, occurs and eventually finds its way into the lubricating oil in the forni of water with the usual detrimental effects.

Referring to the accompanying. drawings which are made a part hereof- Figure 1 represents a sectional view of one form of my invention wherein the cylinder is cast in three pieces.

Figure 2 represents a sectional view showing another embodiment of my invention wherein the cylinder is cast in a single fkFigure l.

somewhat differentM from the showing in Figure 3 'shows Ya/sectional view of a 'further' modification in which the cylinder 1s cast with a removable top portion, the' piston construction also'being somewhat different from the pistons shown in Figures l and 2.

1 Figure 4 represents a sectional view of a further modification embodying the cylinder construction shown in Figure l and the exhaust portarrangement of Figure 2:

" Referring to Figure 2' of the drawing,'it

will be noted that numeralv l'A refers to a Asteam engine cylinder,lnumeral 2 to an exhaust passage connected with the cylinder by the port' or ports 8.' The' broken part 5` indicates the 'top of the crankcase ony which the cylinders may be mounted, or as in this case integral' with it. Below the part 5 is the ordinarycrankcase'or chamber containing the crankshaft, connecting rods, kbearings','etc.', (not shown) the whole lubricated and bathed by a spray of oil created in any usualman'ner.` This lastislstandard or coinmon practice and is inv noway novel orunusual'. Y

YThe invention relates tothe method used in catching or diverting the leakage `pastthey piston intothe exhaust passageor especially IIOII-Gmulsfyng lllbl'CHS are Used?, thrinkpreventingthe same from entering the IlCOIlVGIleIlC@ 0f drawing Ofihe @CCU-H1- Jicranlicase. VThis object is obtained by means of the 'special construction of the piston and piece, the lower' exhaust ports being also:L

the auxiliary sleevef'. As'clearly shown in Ylow the cylinder. The flange has a shoulder A13 r,concentric withthe bore. of the sleeve 6 fitting closely in the cylinder bore and arranged to I, guide or pilot the sleeve inthe cylinder in assembling `the parts.v TheA flange is arranged at a distance from each end of theAV sleeve so that one end of the sleeve extends down into the crankcase while the' other extendsup into the cylinder. The piston 7 hasa flange or cuff 12.0n thev head Y. guided in the cylinder 1. Y f

existing at this point passes into the annular space 11, but does not pass through the small annular space 8, between the lower part of the piston and the sleeve 6, as the pressure in space 11, being Ain constant vcommunication with the exhaust passage 2, through ports 3 and 9, is at a comparatively low pressure, as determined by the back pressure of the engine exhaust at all times.

. This small difference .in pressure is insufficient to force any appreciable amount of water or steam through the annulus 8 which is kept to small dimensions by good mechanical workmanship, and against the resistance of the oil iilm which is always present for lubrication purposes.

rlhe construction or embodiment shown in Figure 2 is but one method of accomplishing the desired result and otherV drawings are shown illustrating other constructions achieving the same general result to a greater or lesser extent. In Fig. 1 the chamber wall 15 is made integral with, the wall 16 of the crankcase and the crankcase is integral therewith, a sleeve 17 providing a bearing for the reduced portion 18 of vthe piston which has a cuff 19 slidably mounted in the cylinder 2O which in this instance is closed at the upper end by a removable cap 21 held in place by bolts 22. The cylinder 19 has an annular' flange 23 resting on the inwardly bent flange which forms the upper wall of the exhaust chamber. In Fig. l the cylinder terminates slightly above the wall` of the crankcase leaving an escape passage at 24 between the end of the cylinder and the top of the crankcase whereby water and steam may 1escape to the exhaust chamber- One or more upper passages 25 provide 'for the escape of steam to the exhaust chamber.

In Fig. 5 the cylinder 25 is integral with the upper wall 26 of the crankcase and with the wall 27 of the exhaust chamber, as well as with the cylinder wall 28 which forms the inner wall ol' the exhaust chamber. Connections from the cylinder to the exhaust chamber are as in Fig. 1. A sleeve 29 guides the reduced part 30 of the piston and is integral with the wall of the crankcase but does not extend upwardly therefrom as in Figure 1, nor is the piston provided with an overhanging cuff, this piston being merely enlarged at the upper' end to lit in the cylinder'.

In Fig. 4l the wall 31 of the exhaust chamber is integral with the upper wall 32 of the crankcase. The sleeve 33 guiding the reduced part of the piston is set into an opening in the upper wall of the crankcase and has a thickened part which may be machined to fit in such opening. Above the wall 32 the sleeve has a flange resting on said wall with a shoulderlf piloting the sleeve in the cylinder 35 which has upper and lower passages 36 and 37 leading to the exhaust chamber as in Fig. 2. rlhe cylinder has an annular flange 38 resting on and secured to the inwardly turned upper part of the exhaust chamber wall 31. A cap 39 forms a closure for the upper part of the cylinder, to which it is secured by bolts 40. The cylinder in Figure l is similar to that in Figure 2. The invention relates not only to the special constructions shown but also to any construction embodying the principle of so constructing a piston and the surfaces against which it operates that only the exhaust pressure is effective to force water of condensation into the crankcase.

I claim:

In a vapor pressure engine, a crankcase containing a lubricant, a cylinder, an exhaust chamber encircling the lower end of the cylinder, ports in the cylinder wall leading to said chamber, a piston operating within the cylinder and formed with a skirt of less diameter than the head, a sleeve for guiding said skirt fixed in relation to the cylinder said sleeve having a radial llange closing the space between the sleeve and the cylinder, and a shoulder on the flange concentric with the bore of the sleeve said shoulder fitting in the cylinder bore, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ALLEN C. STALEY.