Improvement in rotary steam-engines
US 130300 A
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' 3 Sheets -sheefl. H. JUNGLI NG. Improvement in Rotary Steam N0. 130,300.
Patented Au'g. 6,1872.
3Shees--$veet2. H. JUNGUNG. Improvement ih Rotary Steam-Engines.
UNITED STATES PATENT OFFICE.
HUGO JUNGLING, OF HANNOVER, PRUSSIA.
IMPROVEMENT IN ROTARY-STEAM-ENGINES.
- "Specification forming .part of Letters Patent No. 130,300, dated August 6, 1872.
Specification describing an Improvement in Rotary Engines, the invention of HUGO J UNG- LING, of the city of Hannover, in the Kingdom of Prussia.
This invention relates to that description of rotary engines in which a revolving cylinder with pistons attached and radially sliding abutments, or revolving and radially-sliding pistons with abutments, carried by a station ary outer cylinder, are used; and the invention consists in a novel construction and certain combinations of parts, valves, and duets or passages, whereby compactness, durability, and efiEiciency generally are obtained, with facility for running the engine in opposite directions, and either under afull head or pressure or with variable expansion.
In the accompanying drawing, Figure 1 represents a plan of my improved engine, in which steam will be referred to as the propelling agent; Fig. 2, a horizontal central section at the line to w Fig. 3, a partly sectional side view at the line as so; Fig. 4, a transverse vertical section at the line y y and Fig. 5, a sectional side or end view at the line z z.
Similar letters of reference indicate corresponding parts throughout the several figures of the drawing.
A is a stationary inner cylinder, supported by cylindrical side or end studs a a in side pieces or bearings B B of the main frame.
' The two sides of this cylinder are closed by covers b b, of circular form, and fast to said cylinder, but of larger diameter than it, as clearly shown in Fig. 2. Within, and dividing such cylinder into equal parts, are three hollow radial partitions, c c 0, having within them radially-sliding abutments O O 0, each of which is capable of projecting through said cylinder, and the inner ends of which are constructed with cylindrical prolongations d d that fit within correspondingly-shaped chambers in the central portion of the cylinder A.
These sliding abutments C are also each provided with two opposite side studs, 6 0. Through each of the supporting-studs or fixed trunnions a a are three longitudinal ducts, ff f or f j j, arranged to communicate at their inner ends with radial ducts g'g, extending through the cylindrical prolongations, and opening through opposite sides of the sliding abutments O at points which, when said abutments are forced outward, just project beyond the outer circumferential portion of the cylinder A. D is 'an outside revolving cylinder, arranged around the fixed cylinder A, but of larger diameter than it, so as to form steam spaces or chambers h h h, and having covers 6 i rigidly secured to it. This outer cylinder D fits lightly or easily upon the disks or covers b b of the cylinder A; and its covers are constructed to form sleeve-bearings on the fixed studs or trunnions a a. It is also provided on its inner periphery with two oppositely-arranged vfast blocks or pistons, E E, which rest freely upon the outer periphery of the fixed cylinder A. In the inner face of each cover z'of the cylinder D is a cam-shaped groove, k, as shown in Figs. 2 and 4, and into which the side studs 0 of the sliding abutments 0, or rollers fitted on the ends of the studs, enter, said studs passing through. radial slots lin the covers b of the stationary cylinder A. F is a main steam-pipe or system of steam-supply pipes, and G a main exhaustpipe or system of exhaust-pipes, arranged to com municate respectively and interchangeably through a pair of cocks or valves, H H, with boxes or chambers I I at opposite ends of the engine. These boxes or chambers are provided with circularly-revolving disks or valves J J, each of which has two oppositely-disposed ports, m m, through it, and which are alternately brought into communication with the longitudinal ducts f ff on the one side, and with the longitudinal ducts f f j on the other side-that is, the one valve with the one set I of ducts. and the other valve with the other. Such communication, however, is made indirectly through circularly-adjustable cut-ofl' valves K K, arranged between the valves J J and fixed seats a a, through which latter the ducts f f extend. The cut-off valves K K have each three elongated curved openings, 0 o 0, in them, and may be operated or adjusted in a circular direction by worm-wheels on their peripheries and screws q. The valves J J are revolved automatically by pinions-r r and spur-wheels s s from or through spur-gear t t on the sleeves of the revolving outer cylinder D.
Supposing steam to be admitted to the pipe F and through the cock H to the chamber I, while the cock H is adjusted to establish communication between the chamber 1 and exhaust-pipe G, then steam will be passed through the valves J and K, and successively or in regular order through the ducts f and 9 into the steam spaces or chambers h behind the pistons E, so soon as the cam-shaped grooves 7c in the covers 0' of the revolving cylinder act upon the side studs 0 to throw and keep out the radial abutments O, exhaust at the same time being established on the opposite side of the abutments by means of the ducts g f and chamber 1 through the valves J K. The cylinder D then revolves in the direction indicated by arrow in Fig. 4, and the camgrooves k operate in due course to draw in the abutments G for passage of the pistons E of the cylinder D over them. On reversing the position of the cocks H H, so that the chamber I is in communication with the main steam-pipe F and the chamber I in connection with the main exhaust-pipe G, then the ducts f 9 become inlets and the ducts f 9 outlets, thereby reversing the motion of the en gin e. The intervention of the cut-off valves K K between the valves J J and the ports f f at the outer ends of the fixed trunnions a a, or fixed seats n n, arranged externally to said ends, provides for workin g the steam in the engine either under full pressure or with a variable amount of expansion, according to the adjustment of the openings 0 0 o in the valves K K relatively to the ducts f j, the revolving valves J J only having two ports in them, corresponding to the number of pistons E E. Of course, only one of these cut-off valves K K is adjusted at a time to control or affect the ducts f or j--that is, the one on the inlet side of the-engine, according to the direction in which the latter may be running-the other cut-off valve on the exhaust side of the engine then being fully open.
As there are in the combination or arrangement shown in the drawing two traveling pistons and three sliding abutments, the steam-spaces h are equivalent to three steamcylinders working simultaneously that is, two under afull or expansive action of the steam, while the third is preparing for new work. 7
Power may be taken from the revolving cylinder D either by belt or gearing. In some cases it maynot be necessary to reverse the engine, but only to provide for its running in one direction, in which case a single main exhaust-duct may take the place of the three exhaust-ducts passing through the center of the inner cylinder, and the outer cylinder might be made stationary while the inner one revolves.
Having thus described my improvement in rotary engines, I claim- The combination of the cooks H H with the steam and exhaust pipes F G, the revolving valves J J, the cut-off valves K K, the main inlet and outlet ducts f f f and f f f, the radially-sliding abutments G C O with their inlet and outlet ducts g g, the cylinders A D, and the pistons E E, substantially as specified.
This specification signed by me this ninth day of April, 1872.
HUGO JUNGLING, Witnesses:
JULIUs ALBRECHT, Brennan RoEssrN.