US1071779A - Rotary engine. - Google Patents

Description

P. NEARING.

ROTARY ENGINE.

APPLICATION FILED APR.21. 1913.

1,071,779. Patented Sept. 2, 1913.

I 2 SHEETS-SHEET 1.

F. NEARING.

ROTARY ENGINE.

APPLICATION FILED 11.21, 1913.

2 SHEETS-SHEET 2.

fig. 9.

fig .11.

coLumnu PLANoanAPn cu, WASHINGTON. n. c.

Patented Sept. 2, 1913.

FRANK NEARING, OF NEW YORK, N. Y.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Sept. 2, 1913.

Application filed April 21, 1913. Serial No. 762,691.

To all whom it may concern Be it known that I, FRANK NnAnrNe, a citizen of the United States, residing at 211 Columbus avenue, borough of Manhattan, city of New York, county of New York, and State of New York, have invented a new and useful Rotary Engine, of which the following is a specification.

My invention relates to improvements in rotary engines; said engines to be ope 'atcd by steam or any vapor, gas explosive or otherwise, or liquid, in which there are two cylinders in the same plane with coupled shafts, the said cylinders being set on a rigid base; upon said shafts are fixed drums each with a piston, said pistons being on opposite sides of the shaft. And the objects of my improvements are, in a rotary engine; first, a valveless, balanced, adjustable pressure inlet. Second: the prevention of pressure leakage between pistons and cylinder heads. Third: the eccentric disks shaped so as to close the abutments with the least degree of revolution between the passage of the pistons and the seating of the ahutmcnts, and to obtain the action of pressure throughout a greater portion of the revolution. Fourth: to prevent the unnecessary wear of the alout- Inents during their movement. Fifth: to prevent loss of pressure through the abutmcnt entries. Sixth: to insure the free return of the abutment into its chamber. Seventh: to simplify the cross heads and guides as there is no pressure on the abutments during movement, and consequently very little friction on the guides.

1 attain these objects by the mechanism illustrated in the accompanying drawings.

Figure 1 is a side elevation of the machine showing the disks, the cross heads and guides, the lever shafts and gears for throwing the pressure cut-off. Flgs. 2, 3 and 4 show the improved piston wing. Fig. 2 shows the complete wing with spring for pressing the two parts against the cylinder heads. Fig. 3 shows a side view of one half. Fig. l: shows a view of one half looking from the bottom of same. The parts shaded show where cut away for inter-lap. Fig. 5 shows the end of cylinder showing the pressure inlet, the lever and toothed are for throwing the cut-off, and the geared arc and pinion forconnecting the lever to the cut-otl' valve. Fig. (3, shows the back of the abutments with the guide and relief grooves. Fig. 7 shows the guides with yokcs. Fig. 8,

shows the engine in plan view, the pressure pipes, the cut-olf lever, gears and shaft, and the eccentric disks with the top one cut away to show the increased circular portion and the eccentric portion of the lower disk. Fig. 9, is a section across cylinder, showing the inlet ports with the drum cut away to take pressure at both ends. Fig. 10, shows the inside face of cylinder head cut away over the cut-off valve and gear connection, and shows the opening to the blow-back valve. Fig. 11, is a cross section through the cylinder near the end showing the drum as chamfered and cut away for pressure inlet, the abutment with guide and relief groove and the piston. Fig. 12, is a section across abutment, cyliiuler head and flange of abutment chamber, showing the blow-bark valve and the pressure inlet for same.

Similar letters refer to similar parts throughout the entire views.

13 represents the base consisting of a channel section of steel or other equally strong material. At equal distances from the center are the two cylinde 0'. connected by the coupled shafts S. upon which shafts within the cylinders C. l. are set the drums J which are chamfercd or cut away at each end to admit pressure from the circular segmental ports 1, the outer edges of which being of somewhat less radius than the perimeter of the drums J. The ports P are in the cylinder heads C and are connected by openings to the inlet pipes 1 which are connected to both heads of both cylinders. 'lhecutplt valves G are shaped to close up the desired portions of the ports 1, and are rabbetcd on the outer and inner sides and slide in grooves recessed within the cylinder heads (1, the outer edges of the cut-oil? valves Gr" are provided with teeth connecting gear wheels G, also within the cylinder heads U, the gear wheels G are mounted on shafts S which run through the cylinder heads, these shafts S" 1 lso carry other gear wheels G, which engage the segments G which are lixed on the shaft S", the lever ,Z is also lixed on the shaft S, which thereby moves all the cut-oll valves G and is provided with the toothed arc Z, together with the clutchlaud connecting rod Z and handle Z, and spring Y for holding the eut-oll valves G in the desired posi tion. The portion of the pistons IQ and E", which are mounted on the drums J are inclined at about the same angle with the l l l) radius of the cylinder as the abutments, and are each in three parts, the parts E being fixed to the drums J the movable parts are halved and interlapped and provided with springs Y in the openings in the middle, which press the two parts of each completed wing longitudinally against the cylinder heads, and the spring Y presses the same radially against the inner sides of the cylinders C, C.

Between the cylinders O are the two bearing stands D, D, which are extended toward the center and upon the top of which are mounted the guides L for the lower cross heads. These guides are plain bars of greater width at the side which bear against the cross heads L and support the cross heads L which are shaped to fit and slide freely on the said guides L The bearing stands D D for supporting the outer ends of the shaft S are set outside and near the cylinders.

D at the center is the lower bearing of the perpendicular shaft S 7 D is the top bearing of the shaft S D is the bearing for shaft S Between the cylinders G, G and the hearing stands D D are the couplings K, K, which are packed somewhat apart.

On and near the center of the main shaft S is set the bevel gear G, which engages with a similar bevel gear G on the perpendicular shaft S which gears operate the disks F and F which in turn push against the rollers N, N, N, N, causing the cross heads L L L L to move forward and back upon the guides L L L L the rods R, R, R, R, holding the cross heads so that the rollers are constantly against the rims of the disks. At one end of each rod is a spring Y permitting a slight variation in case of a little inequality in the distance across the eccentric portion of the disks. The cross heads L are shaped to fit the guides L which are plain bars, the lower ones wider on the upper sides, set on the bearing stands D, D, and the upper set of guides which work on the disk F are'wider on the lower sides and are secured to the top brace B The abutment chambers or cases A are fixed to the cylinder heads and provide support and bearing for the abutments and are provided-with grooves in the back side to allow accumulated pressure to escape during the withdrawal of said abutments.

The abutment A is in two parts. The upper part A is removable and is set on pins at each end and is pressed downward by the spring G to hold the lower portion A firmly against the drum J and the abutments A are also provided with grooves on the back side fitting a guide A set in the abutment slots in cylinders O,

' which guides hold the abutment A slightly away from the drum J during the movement of the said abutments, but allows the spring Y to press it against the drum when seated, the said grooves and guides being both inclined somewhat so that their sup port is withdrawn at the end of the stroke, and the abutment rests firmly against the drum J thus preventing unequal wear by grinding on both the abutment A and the drum J There is a g oove in the back side of the abutment A for a middle portion of its length, and a corresponding groove opposite in the abutment case, but not through the cylinder heads; so as to allow accumulated pressure to escape from the abutment case during the withdrawal of the abutment. Between the cylinder heads and the flanges of the abutment chambers are valves A, which work in ways formed to hold them.

These valves consist of fiat plates of the same width as the openings in the cylin der heads leading to the abutment chambers, and are set perpendicular to the abutment. The edges of these plates farthest from the abutments are beveled and face openings from the inner face of cylinder heads C3,

which allow the pressure, when applied, to

enter said opening and force the valve A firmly against the abutment, preventing thereby the leakage of pressure throu h the abutment entry. This pressure is wit drawn by the exhaust. V

T represents the cover to the outer abut ment slots.

V represents an opening in cylinders at a point where there is no action.

A brace B B 'made of two angles connects the cylinder at top; Upon this brace is mounted the upper bearing of the perpendicular shaft S which bearing 1s marked D and the guides L for the cross heads working on thedisk F are also fixed between the two angles forming the brace B The yokes Y to which the rods are attached, are firmly fixed to the cross heads, one pair of rods being separated sufficiently to clear the other pair.

In operation the pressure enters the first cylinder through the pipes P and through the circular ports and entrances cut away at each end of drums at both ends simultaneously, pressing against the piston of that cylinder and forcing the said piston around through a portion of its revolution until the exhaust X is reached. Before this point is reached the abutment of the second cylinder is seated, and the second cylinder has taken the pressure, as both disks are circular for somewhat more than a semicircle, and both cylinders are in action before the first one has exhausted during every revolution. The segmental ports may be shortened by the movement of the cut-cit valve which is adjusted and held by the lever Z and the toothed are Z'*. The abutments A are supported by the guides until the cylinder is closed, at which point the incline on guide, and also in abutment groove allows the abutment to rest upon the drum. As the pressure is applied it acts on the end of the valve A, pressing it firmly against the abutment and preventing any escape into the abutment chamber. As the abutment is withdrawn a groove on the underside of same and a groove opposite in the abutment case acts as a relief against any compression in the abutment chamber.

Having thus described my invention, which I claim is new, and desire to secure by Letters Patent is:

1. In a rotary engine the combination of the two cylinders mounted on a rigid base and provided with intake ports taking pres sure automatically through both heads of each cylinder in turn for the desired degree of revolution, and exhaust ports and movable abutments of the coupled shafts mounted in independent bearings and carrying within said cylinders drums having pistons capable of radial and longitudinal expansion, mounted thereon, substantially as shown and described.

2. A rotary enginecomprising a cylinder containing a longitudinal sliding abutment and having mounted therein a horizontal sha'lt carrying a three part piston in combination with a vertical shaft carrying two eccentric disks and connected with a said horizontal shaft by means of bevel gears, one of said disks being flattened for a smaller portion of its perimeter, while the other has a corresponding portion of incre: sed radius and connecting means whereby the rotation of said disks causes the reciprocation of said abutment, substantially as shown and described.

3. In a rotary engine having a cylinder containing a longitudinally moving abut ment, provided with a supporting guide, a valve to prevent pressure escape and relief, grooves, the mechanism for operating said abutment consisting of the vertical shafts; the eccentric disks mounted thereon; the friction rollers bearing against said disks and mounted on cross heads moving on guides, and the rods connecting the cross heads on one side of one disk with the cross heads on the opposite side of the other disk, whereby the rollers are held constantly against the edges of said disks, substantially as shown and described.

FRANK NEARING.

l Vitnesses Len SPENCER, LAWRENCE R. COLBY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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