US905747A - Reversible oscillating engine. - Google Patents

Description

J. L. FILLING.

REVERSIBLE OSGILLATING ENGINE.

Y APPLICATION IILED In e, 1907. Patented Dec. L 1908- 3 SHEETS-SHEET l.

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Y APILIUATION FILED HAY 6, 1907. Patented Dea 1 3 SHEETS-SHEET 3.

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UNITED STATES PATENT oEEToE.

JAMES LOWE PILLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO J. L. PILLING COMPANY, CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

REVERSBLE OSCILLATING ENGINE.

Specification of Letters Patent.

Patented Dec. 1', 1908.

Application led Hay 6, 1967. Serial No. 372,007.

To all whom it may concern:

Be it known that I, JAMES LowE FILLING, a citizen of the United States of America, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Reversible Oscillating Engines, of which the following is a specification.

This invention relates to reversible oscillating engines, and more especially to the type of oscillating engines set forth in my former patent No. 787,692, dated April 18, 1905, and the present improvement has for its object to provide a simple and efficient structural formation and combination of parts, adapted to afford means for the ready and eiiicient reversal of thedirection of rotation of the engine, all as will hereinafter more fully appear.

In the accompanying drawings: Figure 1, is an elevation of the end head of a twin cylinder engine casing, illustrating the ported seats of the same. Fig. 2, is a longitudinal Sectional elevation of said engine, illustrating the general arrangement of the engine parts, as well as the ported valve face of one of the engine cylinders. Fig. 3, isl a sectional elevation on line ca Fig. 6, illustrating the reversing valve of the engine. Fig. 4, is a similar view on line @2-m Fig. 6. Fig. 5, is a vertical transverse section of the engine, on line #km2 Fig. 4. Fig. 6 is a detail longitudinal section of the engine on line v4-x4 Fig. 4. Fig. 7, is a detail elevation of the ported end of the movable member of the reversing valve. Fig. 8, is a detail transverse section of the same intermediate its length. Fig. 9, is a detail elevation of the ported end of the stationary member of the reversing valve.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents the main in'closing housing having at one end a fixed or integral head 2, and at the other end a removable head 3, to constitute a closed casing in which the cylinders and other moving parts of the engine are contained. As usual in the present type of engines, the fixed head aforesaid carries the bearings for the engine shaft, while the removable head is formed with the series of passages and ports by which air or other motive fluid is conducted to and from the oscillating cylinders of the engine; and in addition carries the reversing valve by which the direction of revolution of the engine is governed, and to such end said removable head will comprise a construction as follows 4, is an individual passage or channel formed longitudinally inthe head 3, and communicating at each end with a pair of seat ports 6 and 7 of each engine valve, while at its middle said passage 4 is in connection with an individual passage or channel 10 of the reversing valve hereinafter described. 5, is a similar individual passage or channel formed in parallel relation to the channel 4, and communicating at each end with the other pair of seat ports 8 and 9 of each engine valve, while at its middle, said passage 5, is in connection with an individual passage or channel of the reversing valve hereinafter described.

12, is a transverse cylindrical bore or chamber formed in the head 3, intermediate of the passages 4 and 5, and adapted to receive a stationary bushing, constituting the stationary member of the reversing valve as hereinafter set forth. Such bore communicates with the aforesaid channels 10 and 11, and also with individual channels 13 and 14, which in turn are in communication with the inlet and the exhaust necks 15 and 16 for the motive fluid, as shown in Figs. 3 and 4.

17, is the stationary bushing secured in the aforesaid bore 12, and provided with a marginal flange 18 at its outer end, which -its an outer enlarged portion of the bore 12 to insure the proper position of the bushing in the end head 3 of the engine casing. The said bushing constitutes the stationary member of the manually controlled reversing valve of the engine, and to this end is formed with a closed inner head 19, and with an outer head 20, formed with four equidistantly spaced ports 21, 22, 23 and 24, as shown more particularly in Figs. 5, 6 and 9.

25, are a corresponding number of longitudinal and radial partitions dividing the interior of the bushing into four passages, which in turn constitute individual connecting channels between the four ports 21, 22, 23 and 24, just described, and the before described channels 10, 11, 12 and 13, through openings formed in the circular wall ofs'aid valve member 17, as illustrated in Figs. 5V

and 6. Such movable valve member is formedv with an outer closed head and an inner ported head, the ports 27 28, 29 and 30 of which correspond and are adapted to register with the radial ports 21, 22, 23 and 24 of the stationary valve member.

31, is a central longitudinal partition dividing the interior of the movable valve member into two chambers and with each chamber individual to a pair of the ports 27, 29', and 2S, 30 as illustrated more particularly in Fig. 8.

32, is a cover closing the outer end of the aforesaid bore 12, in which the reversing valve is arranged.

33, is a central operating stem on the movable member of the reversing valve; such stem passes through a central orifice in the cover 32, and is formed with a non-circular end for the reception of a suitable handle or crank.

The operation of the reversing valve above describedis as follows With a partial rotation of the movable valve member in one direction, its ports 28 and 30 are in register with the ports 22 and 24 of the stationary valve member, and motive fluid from the inlet neck 15 is introduced through said ports into the channel or passage 5; at the same time the companion ports 27 and 29 of the movable valve member are in register with register with the ports 23 and 22 of the stationary valve member, and motive fluid from the inlet neck 15 1s introduced through said ports into the channel or passage 4; at the` same time' the ports 27 and 29 of the movable valve member are in register with the ports 24 and 21 of the stationary valve member, to connect the passage or channel 5 with the exhaust neck or passage 16. As so connected the engine is operative in the other direction, say to the left. With the movable valve member turned so that its ports 21, 22, 23 and 24, are out of registerL Avitli' the ports 27, 28, 29 and 30, of the sta- 'vtionary valve member, motive fluid isl cut oitA from the engine cylinders,vand the engine lat'rest.`

34 is a Aspring interposed between the cover 32v and the movable member of the reversing 'valve to yieldingly hold said valve member to its seat.

35 is a central guide stem on the aforesaid movable valve member', and having bearing in a central orifice in the stationary valve member 17 as shown.

36 is a secondary spring interposed between the inner end of the stationary valv-e member 17 and a removable nut 37 on the inner' end of the guide stem 35, to assist in holding the movable valve member to its seat.

3S are counterpart oscillating engine cylinders provided with the usual trunnions 39, by means of which they have oscillation in suit-able bearings formed therefor inthe end heads 2 and 3 of the engine casing, as usual.. Such cylinders are provided with the usual pistons and piston rods connected in common to the crank pin of the engine shaft 40.

4l is the usual circular seat on a side of each cylinder, and through which the opposite ports 42 and 43 open. Such ports communicate with the respective ends of a cylinder and are adapted to alternately register with one pair or the other of the before described seat ports 6, 7, 8 and 9, in the normal operation of the engine and in manner usual thereto.

In the present improvement the trunnion in Fig. 5, and with the area of said piston chamber slightly in excess of the combined area of a pair of the ports 6, 7, 8 and 9.

46 is a pipe or passage extending from a motive fluid inlet portion of the engine, preferably the inlet neck 15, to the piston chamber 45 aforesaid, and adapted to introduce therein a motive fluid pressure in excess of that exerted in the opposite direction through the series of ports 6, 7, S and 9, to thus maintain the circular seat 41 of the engine cylinder in proper contact with the valve seat of the engine housing and with a minimum amount of friction and wear, regardless of fluctuations in pressure of the motive fluid supplied to the engine.

47 is a neck on the casing of the reversing valve for the attachment of a suitable lubricator.

Having thus fully described my said invention what I claim as new and desire to secure by Letters Patent is 1. A controlling and reversing valve comprising in combination a valve housing forming a part of an end head of the engine' casing and provided with apair of individual passages adapted for communication with the engine cylinders, crossed partitions in said housing forming four chambers two of which have individual communication with the pair of passages aforesaid, inlet and outlet necks on the valve housing having eo1n lnunication with the other two of said chambers, a circular closed top movable valve member divided by a central transverse partition into a pair of chambers and seated at one end of the four chambers aforesaid, a cover forming a journal for said movable valve member, and means for imparting a turning movement to said valve member, substantially7 as set forth.

2. A controlling and reversing valve comprising in combination a valve housing forming a part of an end head ofthe engine casing and provided with a pair of individual passages adapted for communication with the engine cylinders and having a circular bore, a stationary valve member arranged in said bore and divided radially into four chambers two of which have individual communication with the pair of passages aforesaid, inlet and outlet necks on the valve housing having communication with the other two of said chambers, a circular closed top movable valve member divided by a central transverse partition into a pair of chambers and seated at one end of the four chambers aforesaid, a cover forming a journal for said movable valve member, and means for imparting a turnin movement to said valve member, substantial y as set forth.

3. A controlling and reversing valve comprising in combination a valve housing forming a part of an end head of the engme casing and provided with a pair of individual passages adapted for communication with the engine cylinders and having a central bore enlarged at its outer end, a stationary valve member flanged at its outer end and litted to said bore, said valve member being divided radially into four chambers two of which have individual communication with the pair of passages aforesaid, inlet and outlet necks on the valve housing having communication with the other two of said chambers, a Circular closed top movable valve member divided by a central transverse partition into a pair of chambers and seated at one end of the four chambers aforesaid, a cover forming a journal for said movable valve member, and means for imparting a turning movement to said valve member, substantially as set forth.

Signed at Chicago, Illinois this 30th day of April 1907.

' JAMES LOWE FILLING. Witnesses:

ROBERT BURNS, HENRY Mon.

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