US1135750A - Rotary engine. - Google Patents

Description

IE. 0. ALLEN & F. J. MUELLER.

ROTARY ENGINE. APPLICATION FILED FEB. 24. 19M.

. Patented, Apr..13,1915.

41 SHEETS-SHEET 1.

E. 1c. ALLEN E F. L.v MUELLER.

ROTARY ENGINE.

APPLICATION FILED FEB. 24, 1914.

Pafiented Apr. 13, 1915.

4 SEBETS8HBET 2.

' WlTNEEaSE5= E. C. 'ALLEN & F. J. MUELLER.

ROTARY ENGINE. APPUCATION FILED FEB. 24, I914.

*1 SHEETS-SHEET 3.

' Patented Apr. 13, 1915.

.E, C. ALLEN &-F. J. MUELLER.

ROTARY ENGINE.

I APPLICATION FILED FEB- 24; I914- mmfifl, mm Patented Apr.13, L915.

4 sums-$111221 4.

wrmasshis ":LVELNTOFES Ul ll'fE nine.

ERNEST C. ALLEN AND FELIX J. MUELLER, OF WEST ALLIS, WISCONSIN.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Apr. 13, 1915.

Application filed February 24, 1914. Serial No. 820,690.

To all whom it may concern:

Be it known that we, ERNEST O. ALLEN and FELIX J. MUELLER, citizens of the United States, residing at West Allis, in

the county of Milwaukee and State of Wisv-rhich is readily assembled and taken apart;

third, an engine of the above character which is of a compoundtype, and suitable for both condensing and non-condensing operations; fourth, a rotary engine in which a combination of specially constructed valves of the rotary type are employed to affect the admission, the cut-off of the pressure fluid to the high pressure chambers and thence to the low pressure chambers, and the regulation of the exhaust port open- With the foregoing and other objects in view which will appear as the description proceeds, the inventionrcsides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed,'it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

F or full understanding of the invention, reference is to be had to the following description and accompanying drawings in which:-

figure 1 is a longitudinal sectional view 't trough. the complete engine, said section bBlIlg taken upon line MM as shown in- Fig. looking in the direction of the arrows. Fig. 2 is a section taken online AA of Fig. 1 illustrating the positions of the high and low pressure abutting valves with re spect to the rotating pistons-at the'beginning of a stroke. Fig. 3 is a front elevation showing the inlet pipe connections. Fig. 4 is a rear elevation thereof disclosing exhaust pipe connections and reversing gear.

Fig. 5 is a detail section on line B-B Fig. 1 showing the meansof controlling the abutting valves. Fig. 6 is a detail section on line CU Fig. 2 showing the construction of the high pressure abutting valves. Fig. 7 is an end View of a low pressure abutting valve looking on the inlet side. Fig. 8 is a detail section on line DD Fig. 2 showing the construction of the low pressure abutting valves. Fig. 9 is a perspective view of a rotary admission and cut-off valve. Fig. 10 is a detail sectional view of the form of packing interposed between the moving and stationary parts. Fig. 11 is a detail View showing one of the rotary pistons with packing strips in place.

In these drawings like characters of reference indicate corresponding parts in each figure.

The preferred form of construction as illustrated in the drawings comprises a stationary cylindrical casing or stator consisting of end members 1 and 2 which are formed at the under sides with bases whereby the engine may be mounted upon and secured to a suitable support. Arranged between these members is an intermediate partition3, said members and partition being rigidly secured together at intervals by means of bolts 4. v A shaft 5 is mounted in bearings 6 and 6, which are supported by the pedestals 7 and 7. Said pedestals being rigidly fastened to the above mentioned end members by means of bolts l. At the points where the shaft 5 extends through the end members special sealing glands comprising 8, 9, 10, 8, 9 and 10 are employed to confine the leakage pressure fluid within the walls of the stator. In this sealing gland 9 and 9 are rings fixedly disposed with respect to the end members 1 and 2.

8 and 8 are rings fixedlydisposed with respect to the shaft 5. Grooves are formed in the adjacent faces of. 8, 9, 8' and 9', forming annular recesses for receiving the sealing rings 10 and 10. The screws 11 also disposed in the end members 1 and 2 provide for longitudinal adjustment.

Mounted upon and rigidly secured to shaft 5 by means of keys is a. plurality of rotors 12 and 'l-id. Said rotors are of a diameter less than that of the interior of the stator,

so that annular spaces are formed around mediate partition 3 thus forming a series of j initial and expansion chambers which are By means of independent of each other. packing rings 16 disposed in annular grooves between the adjoining faces of the rotors and the stator, the amount of leakage pressure fluid is reduced to a minimum.

Disposed a out the peripheries of the rotors12 and 13 and securely fixed thereto by means of the'bolts 17 is a plurality of pistons 18, 18 arranged in pairs, that is,

, each piston having a like one placed diametrically opposite. The pistons 18 and 18- form a plurality of separate initial pressure; fluid chambers 1 1 and 1 1 in the annular.

space between the rotor 12 and the. stator" and in a like manner the pistons 18 and '18 carried by the rOtOr 13 and which are of the same number and in longitudinal alinement with these, fprm a plurality of expansion 24. and 24 chambers in the annular space between the rotor 13 and the stator. These pistons 18',

18 are also supplied with packing strips as detailed in Fig. 11, forming a snug fit'wlth.

the walls of the pressure fluid chambers. Main initial pressure fluid controlling valves 20 and 20, cylindrical in shape, which are to be restricted to a certain oscillatory motion by external means,'not disclosed in the drawings, but communicating with the same through the stems 21 and 21' which form parts thereof. Said stems extend through glands 22 and 22 disposed in the walls of special inlet pipe connections, preventing .any leakage of pressure fluid to the atmos-' phere. The function of these rotary controlling valves is to regulate the time of port opening and cut-ofi'. Said valves are disposed in rotary abutting valves 25 and 25, these abutting valves, arranged in pairs about the peripheries of the rotor 12, are

located in cylindrical recesses formed in the 'end member 1 and placed diametrically opposite each other, having the ports of said rotary controlling. valves 23 and 23' com municating respectively with the assages which are formed in sai rotary abutting valves. By means of. this combination of ports and passages the pressure fluid is admitted at either side of the vertical center line of these valves depending upon the direction of rotation desired. The arrange- I mentof these combinations of valves as described permit the pressure fluid to be simultaneously admitted and cut-off at oints diametrically opposite, thus resulting In a high degree balanced conditions about the rotor at all times, it being understood that the area of the port openings in each set of diametrically placed-valves are of the same size.

After the pressure fluid is admitted to the initial chain are variable cut-offs occur in order to. malntaln regulation of speed under variable loads. These cut-oifs are brought "about by the external means heretofore mentioned, through communication with the fluid to the point of cut-off, the remainder of the stroke being completed by the expansive force of' the pressure fluid. From these' chambers admission to the low pressure chambers is brought about. by means of passages 27 28 and 28 formed in the low pressure abutting valves 29 and 29', said admission necessarily occurring immediately after pistons 18 and 18 pass the points 30 and 30'. Said low pressure abutting valves which are located in cylindrical recesses formed in end member 2 and intermediate member 3, are placed about the periphery of rotor 13 diametrically opposite each other and in longitudinal alinement with their corresponding initial pressure inlet valves and rotary abutting valves. The manner in which the rotary abutting valves 25, 25", 29 and 29 are .en-

'gaged and held together at their adjacent in special exhaust connection 35. The rotary abutting valves are provided on their under sides with shock absorbing springs 33 which tend to reduce the jar upon them caused by the rotating pistons.

The pressure fluid after being thoroughly expended in the low pressure expansion chambers 15 and 15, passes through suitable openings 34 and 3 1' provided in end memher 2, then into the special exhaust connection 35 and 35'. -As can be seen from the different views provision for ample area of exhaust openings are made by means of the specially constructed low pressure abutting valves.

Means is provided for changing the direction of rotation of the engine. The reversing of the engine is brought about by means of a reversing lever 36. This lever is s curely fastened to the valve stem 37 and by" engaging the end of this stem with slots 38 and 38, suitably formed in the end of the low pressure abuttin valve, then turning said valve by means 0 lever 36 bringing the opposite faces of the abutting valves into play as abutments and thereby transferring the pressure fluid inlet to the opposite side of the vertical, center line of the valve combinations. As'before stated the motion of the different abutting valves is influenced by the springs 31 and 31 which are received and fastened at one end in specially formed recesses provided for in the special exhaust connection 35. The springs 31 and 31' are employed in turn dependin upon the direction of rotation deslred. he influence of the springs being transmitted to the rotary abutting Valves through the wing 39 which forms a part of the valve stem 37. It is evident in reversing that the angularity of the rotary abutting valves with respect to their vertical center line must be changed.

Said change necessitates the force which 1nfiuences the motion of said valves tobe trans ferred to the opposite side of the vertical center line of the valves, this change being brought about by withdrawing the valve stem 37 from its slots provided in the low pressure rotary abutting valve, then turning lever 36 together with stem 37 through the required angle to permit engagement with the other slot provided.- In this operation the wing 39 is brought up againSt-thefree end of the opposite acting compression spring thus bringing its influence "into operation.

Having thus described the invention, what we claim as new and desire to secure by Letters Patent is In a compound rotary engine; a casing divided into high and low pressure rotor receiving compartments and having substantially diametrically, oppositely arranged abutment receiving chambers disposed adjacent the compartments; high and low pressure rotors arranged within the high and low pressure compartments respectively; swinging hollow abutments arranged within the abutment receiving chambers, each abutment comprising a high pressure abutmentsection discharging into the high pressure compartment and a low pressure abutmentsection receiving the exhaust from the high pressure compartment and discharging into the low pressure compartment, each abutment-section having its opposite ends open and-adapted to be broughtto covered and uncovered positions whereby the direction of By means of connecting rod 42 linked.

to levers 4:0 and 41 any change in the angularity of either combination of valves while reversing will be transmitted 'tothe diametrically oppositely disposed combination of valves. At the same time this mechanism serves to transmit the influence of the springs acting upon the first combination of valves, to those of the second combination oppositely disposed. At the points wherethe stems 37 and 37 project from the special exhaust connections 35 and 35', suitable packing glands 4:3 and 43 are provided.

These glands prevent leakage of the pressure fluid from the exhaust connections and in condensing operation prevent air from leaking in.

rotation of the rotors may be reversed; mechanical connections between the abutments whereby they may be simultaneously turned in reversing the rotors; spring operated means to automatically return the discharging end of each abutment-section to the operative position when moved therefrom by the corresponding rotor .during the operation of the rotor; a tubular valve arranged within each high pressure abutment-section to be turned therein for regulating the passage offiuid pressure through the same; and means for simultaneously supplying fluid pressure to the high pressure abutment-sections. v

In testimony whereof we aflix our signatures in the presence of two witnesses.

ERNEST (J. ALLEN. FELIX J. MUELLER.

Witnesses:

JOSEPH B. BRADY, EUGENE BEAUNSCHWEIGER.

patent may be obtained for five cents each, by addressing the Commissioner. of I'atents,

Washington, D. 0'.

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