US782802A - Rotary engine. - Google Patents

Description

PATENTED PEB. 14, 1905.

RUBEN,

ROTARY ENGINE. r APPLIOATION FILED MAB.. '7, 1904.

3 SHEETS-SHEET 1.

Smmntov .Eau/art -em m13 l M 5,77 @y rfofmuo No. 782,802. PATENTED FEB. 14. 1905.

E. URI-IN1 ROTARY ENGINE.

APPLIOATION FILED 1mm, 1904.

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@n menton Edu/ard 27736114 PATENTED PEB. 14, i905.

E. UREN.

ROTARY ENGINE.

APPLIOATION FILED MAR. 7. 1904.

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UNTTED STATES Patented February 14, 1905.

PATENT QEETCE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 782,802,

dated February 14, 1905.

Application filed March 7, 1904. Serial No. 196,997.

T rif/ZZ wil/077e t may con/cern:

Be it known that I, EDWARD UREN, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented a newand useful Rotary Engine, of which the following is a specification.

This invention relates to that class of engines having' a revolving piston, a movable abutment, and means for admitting steam into the space between the piston-head and the abutment.

The objection to many of therotary engines heretofore designed has been that they are too complicated for practical use, and while theoretically an improvement in the art, yet praetically they break down under continuous use owing to the multiplicity of parts, especially of valves, springactuated abutments, and sliding piston-heads projected outwardly by springs.

The object of this invention is to provide a rotary engine of the fewest possible parts consistent with an operative practical engine, whereby the whole may be strongly and durably constructed at a reasonable cost. In this engine but one valve, one cam, one abutment, and one piston-head is employed, and all these parts are moved positively and do not depend on gravity or the force of springs for their movement.

My invention also consists in the novel features of construction and combination of parts hereinafter described, particularly pointed out in the claims, and shown in the accompanying drawings, in which` Figure l is an end elevation of my engine. Fig. 2 is a vertical section on the line 2 2 of Fig. 3. Fig. 3 is a longitudinal vertical section on the line 3 3 of Fig. 2.

In the drawings, A represents a cylinder of the desired size, and extending' longitudinally along the top of the cylinder A is a casing A', having parallel side walls and opening downwardly into the cylinder A. The cylinder A is supported by suitable brackets upon a bedplate A. Passing longitudinally through the cylinder A is a shaft B, having a drivingwheel B keyed thereto. The shaft Bis rotatably journaled in the cylinder-heads D and extends through the said heads. Secured to the periphery of the wheel B and extending practically from one cylinder-head D to the other is a piston-head C. The sides of the piston-head are inclined so as to be disposed at right angles to tangential lines touching the periphery of the wheel B. Parallel longitudinally-extending recesses are formed in the piston-head, and sockets C/ communicate with the recesses. In' these sockets are arranged springs ()2, which bear outwardly on the under sides of packing-stri ps C3, arranged in the recesses, the outer faces of the packing'- strips being curved to fit snugly against the sides of the cylinder A.

The-cylinder-heads D are formed with annular exterior shoulders D/, which increase the thickness of the ends, and annular grooves D2 are formed on the inner faces of the ends coinciding with the exterior shoulders D@ Packing -strips Dif are. arranged in these grooves, and springs D4, also arranged in the grooves, bear on the packing-strips and force same outwardly in close engagement with the sides of the rim or periphery of the wheel B'. The packing-rings D3 are formed in two sectionsean inner and an outer sectionthe meeting faces of these sections being oppositely angled, so that the thrust of the springs Di is both outward and lateral, thereby making a tight joint.

A sliding head or abutment Eis adapted to contact on the periphery of the wheel B, and a stem E is connected to this sliding head. The head is adapted to move vertically between the parallel walls of the casing A', the stem working through a suitable stuffing-box formed on the casing A', and above the stuffing-box the stein is slotted, as shown at E2, the upper and lower walls of the slot being rounded. On one side of and adjacent the sliding head is a steam-inlet F, in which is arranged a one-way valve F, and on the opposite side of the sliding' head is arranged an exhaust-port Gr, normally open and not provided with a valve. The exhaust-port G is interiorly threaded, as shown, in order that an exhaust-pipe (not shown) thereto.

Extending longitudinally above and paralmay be secured IOC lcl with the cylinder A is a rock-shaft H, supported by a suitable bracket H and having secured thereto ad jacent each end rocker-arms H, and the outer end of one of these arms H2 rests in the slot Ff of the sliding-head stem E. A lifting-bar H3 is arrang'ed at the end of the cylinder A, over which one end of the rock-shaft H projects, and the upper portion of the bar works vertically through a sleeve H", and its upper end is pivotally connected to a link H, which in turn is pivoted to the outer or free end of the remaining rocker-arm H2. The lower end of the bar H:i is enlarged to form a shoe H, which rests upon a camwheel J. The cam projection of the camwheel J is bifurcated, and a cam-roller J is journalcd in this bifurcated portion and is adapted to engage and lift the shoe H, lifting' also the bar H, link H5, and rocking the rockshaft H through the medium of the arm H2, to which the link H is attached, and imparting the same rocking movement to the other rocker-arm H, thereby lifting the stem E and the sliding' head E.

Upon the opposite end of the shaft B to that which carries the cam-wheel J is arranged an eccentric l, having the usual eccentricstrap K', rod K, and the cran k-arm Ki pivotcd at its free end to the rod K and connected at its opposite end to the stem F2 of the valve F.

The operation of the engine is as follows: Steam enters the cylinder A through the valve F and inlet F, and as it cannot pass the sliding head E, which is down or in its lowest position, it forces around the piston C, turning the wheel B' and shaft B. f hen the pistonhead has traveled one-thii'd of the distance around the cylinder, steam is cut off by action of the eccentric K and connecting' parts and the steam works by expansion until the piston passes the exhaust As the piston nears the sliding head after passing' the exhaustport Gr the head is drawn upward into the casing A by action of the cam-roller J on the shoe H" and the piston-head passes beneath the sliding' head. As the piston-head passes the steam-inlet F the valve is again opened and a new cycle is commenced.

It will be seen from the above that the construction and operation of the engine are very simple.

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

l. lhe combination with a rotary engine having a revoluble piston therein, of a casing having parallel vertical walls, a sliding head adapted to move vertically between said walls and to project downward into the path of the piston, an upwardly and outwardly extending l stem connected to the sliding head, a rockershaft, an arm secured to the rocker-shaft and adapted to actuate the sliding-head stem, a lifting-bar adapted to move vertically and arranged at an end of the said engine, an arm secured on the rocker-shaft and terminating adjacent the upper end of the lifting-bar, a link pivotally connecting the last-mentioned arm and the lifting-bar, and a cam on the engine-shaft adapted to lift said bar as the piston approaches the sliding head.

2. The combination with a rotary engine having -a piston and a shaft driven by the piston, of a cam-wheel on said shaft having abifurcated cam portion, a roller in said bifurcated portion, a sleeve arranged above the cam-wheel, a lifting-bar movable vertically in the said sleeve and having a shoe formed at its lower end adapted to normally rest on the cam-wheel and to be engaged by the camroller, a rock-shaft, a rocker-arm secured to the said shaft adjacent its outer end, a pivoted link connecting the upper end of the lifting-bar and the outer free end of the rockerarm, a sliding head adapted to extend normally into the path of the piston, a slotted stem connected to said head, and a rocker-arm secured to the rock-shaft and having' its free end in engagement with the slot of theI stem of thc sliding head.

3. In a rotary engine, a cylinder, cylinderheads, annular, exterior shoulders formed on the said heads, annular grooves formed on the inner faces of the cylinder-heads coincident with the shoulders, springs in the grooves, a sectional packing-ring arranged in the said grooves the meeting faces of the sections being' oppositely angled, a shaft through the cylinder, and a wheel keyed to the shaft and having its sides bearing on the outer section of the said packing-rings.

LL. A rotary engine comprising a cylinder, a rotatable shaft journaled therein, a wheel keyed to the said shaft and extending from end to end of the cylinder, a piston-head arranged on the periphery of the wheel parallel to the shaft and extending from end to end of the cylinder, said piston-head being formed with two parallel, longitudinal recesses and having' sockets opening into said recesses, springs in the sockets, packing-strips arranged in the recesses and engaged by the springs, the sides of the said piston-head being outwardly divergent, and means for admitting and exhausting steam from the said cylinder.

EDWARD UREN.

lVitnesses:

F. H. DENNY, FRANK 'J. Prrz.

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