US856739A - Rotary engine. - Google Patents

Description

No. 856,739. PATENTED JUNE 11, 1907.

B. A. SLADE.

ROTARY ENGINE.

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No. 856,739 PATENTED JUNE 11, 1907.

B. A. SLADE.

ROTARY ENGINE.

APPLiOATION FILED JULY 30, 1906.

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No. 856,739. PATENTED JUNE 11, 1907. .B. A. SLADE.

ROTARY ENGINE.

APPLIOATIO'N FILED JULY 30, 1900.

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No. 856,739. PATENTED JUNE 11, 1907- B. A. SLADE.

ROTARY ENGINE.

APPLICATION FILED JULY 30, 1906.

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WZZrwssea 4 1707/6 mow 5.012. Slade BASIL ALFRED SLADE, OF LONDON, ENGLAND.

ROTARY ENGINE.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed July 30,1906. Serial No. 328,471.

To (ZZZ- whom it may concern.-

Be it known that I, BASIL ALFRED SLADE, a subject of the King of Great Britain, of 27 Charles street, Berkeley Square, London, in the county of Middlesex, England, have invented a new and useful Rotary Engine, of which the following is a specification.

My invention relates to improvements in rotary motive power engines and pumps in which a central shaft passes through stuffing boxes in the ends of a cylinder, one or more curved radial pistons or arms being fixed upon the shaft and revolving with it in the cylinder, radial diaphragms sliding in chambers upon the periphery of the cylinder, and against the pistons, and steam being admitted and exhausted to or from the space between the piston and the diaphragms in succession by means of pipes and valves actuated by cams; and the objects of my improvements are, to make the driving shaft and piston work automatic ally entirely with out valves, to provide means by which the direction of the revolution can be reversed, and to make the entire engine simple, effective, and durable. I attain these objects by the means illustrated in the accompanying drawings, in which Figure 1 is a front elevation of a motive power engine having three radial diaphragms. Fig. 2 is an end view. Fig. 3 is a transverse vertical section. Fig. 4 is a longitudinal vertical section. Fig. 5 is an elevation, partly in section, of the front of the engine. Fig. 6 is an elevation, partly in section, of the front cover of the cylinder end. Fig. 7 .is an elevation showing the back of the engine, with the cover on the end of the cylinder removed. Fig. 8 is a vertical longitudinal sec tion, on the line A-B (looking to the left) in Fig.7 Fig. 9 is a modification of the engine in which only two diaphragms are used. Fig. 10 illustrates another modification in which three diaphragms are used, themselves sliding in a revolving piston in an elliptical cylinder.

Similar letters refer to similar parts throughout the several views.

a, (Figs. 2, 3, i, and 8) is the cylinder carried upon a supporting base I).

c and d are strong ends bolted to the cylinder 0., through which the driving shaft 9 passes, through stuffing boxes 6 and f.

h is the piston upon the shaft 9, extending radially completely across the cylinder a, its outer ends h, 7L2 being curved (as shown in Fig. 3) to fit accurately in the cylinder at, and provided with spring packing at i. The sides connecting the two ends of the piston, are curved to a much longer radius so as to leave spaces is, is between them and the inside of the cylinder (0. Both ends of the piston are made to fit, as steam tight as possible, against the two ends 0, d, of the cylinder at, (for which purpose spring packing may be used if necessary).

Z, Z, Z are radial equidistant closed chainbers round the outercircumference of the cylinder a, in which fit and work sufficiently steam-tight, three radially corresponding plates or diaphragms m, m, m Enlargements or extensions, n, 'n, n at the bottom of the chambers Z, Z, Z to which steam is supplied through passages at proper times, carry the steam to one or other side of the diaphragms and to the space between the latter and the revolving piston at 0, Fig. 3, while the exhaust steam is conveyed away through the same passages to the enlargements n, n, W, and thence through the passages through the piston to the exhaust pipe.

By admitting steam to one side of the diaphragm m, the piston 71 is made to revolve in one direction, while by admitting it at the other side, the direction is reversed, the exhaust passages being similarly and simultaneously changed.

Completely through the body of the piston, near its center, are four passages, 1, 1, and 2, 2, (see Fig. 3) concentric with the driving shaft, the open ends of which fit closely (as they revolve) against the inner sides of the cylinder ends 0, (Z. On the outer face of the cylinder end a is a central projection or boss p, extending partly through which are two concentric grooves 3, 4, in such position that three openings, 5, 6, 7, through the bottom of the outer recess correspond with those 1, 1, through the piston, and three openings 8, 9, 10, through the bottom of the inner recess 4 correspond with those 2, 2, through the piston.

g is a cover fitting over the boss 1) and screwed to the cylinder end a, and fitting round the stuffing box a (see Fig. 4) through which the shaft {1 passes. The cover q is provided with an inlet steam pipe 11, and an exhaust pipe 12, communicating with the re cesses 3 and 4 respectivelyigjigThe other cylin-' v port 17 which passes out through the outer (or opposite) side of the cylinder end d into the inside of the cover 7', so that the steam coming through the passage in the piston passes into the T-shaped recess on the inner side of the cover (1 and thence into the cover 1* through a passage in the outside of the cover d.

The ends of the chambers Z, Z, Z are open, but are closed by radial projecting parts Z 1, Z of the cylinder ends and d which are screwed to them. Two passages 18 shown formed partly in the cylinder end (1 and partly in the cover 1" are arranged parallel to each of the diaphragms m, m, m their outer ends opening into the enlargements n, n, M, one upon each side of the diaphragm, while their inner ends open through the outer face of the cylinder end (1, into the interior of the cover 1".

19 is a disk fitting into the interior of the cover 1 so as to occupy the space between the face of the cylinder (1, and the back of the cover 1. This disk 19 is provided with means by which it can be made to revolve through a part of a circle, (in Figs. and 6 a handle 20 is shown connected with it and passing through a narrow slot 21 in the cover 1") and it has through it six openings of the shape shown at 2 in Figs. 5 and 6. These openings are approximately triangular, their inner angle in one position coinciding and com municating with the passage 16 from the inlet passage through the piston, while in the other position of the disk their inner passage is completely out off from the inlet in the piston. At the same time, as shown in Figs. 5 and 6, the outer part of the openings form a communication (as the disk is turned) between one or the other of the alternate passages and the enlargement n on the opposite side of the diaphragm, and the corresponding exhaust passage through the piston.

Where it is not desired that the direction of rotation of the engine should be capable of being reversed the valve disk 19 may be omitted, or fixed, or may form part of the boss on the cylinder end (Z, one of each pair of passages 18 being also omitted, steam being admitted from one of the passages 1 through the piston directly into one of the ports 13, 14, or 15, and thence, as the piston revolves, into one of the chambers 22, and

In Figs. 3, 4, and 8 is shown the method used to make the joint between the ends of the diaphragms and the revolving pistons. 23 is a sliding piece hinged to the inner end of the diaphragm m by a pin 24;, the junction being made as nearly as possible steamtight. The end of the diaphragm is made in the form of a segment of a circle, in end view, at 25, and the end of the sliding piece at 23 is hollowed and made to fit closely and turn upon the circular end of the diaphragm. The outer end of the sliding piece is made somewhat concave and slides sufficiently steam-tight over the surface of the piston as the latter revolves. Upon the concave end 23 of the sliding piece are fixed spring packing strips 26, the upper parts of which press against and work upon the convex end of the diaphragm, and they are shown fitting in grooves in the latter. Through the cen ter of the diaphragm m is a radial passage 27 opening into the outer end of the chamber, in which the diaphragm m works, while the inner end of the passage branches out on 100 each side of the diaphragm, the ends being each opened and closed alternately by the spring packing strips 26 so that the space at the outer end of the chamber is connected alternately with steam and exhaust, and the diaphragm is pressed against the retreating surface of the revolving piston.

Ordinary means for lubrication are provided where necessary.

Fig. 9 is a transverse section showing a no modified form of the engine, in which two opposite diaphragrns are used, instead of three, the piston being similar to that already described, and the distributing valves and passages being of the same kind but suitably modified, and the same letters of reference indicate the corresponding parts to those in the other figures.

Fig. shows another form of engine in which, instead of a cylinder a chamber is used more or less elliptical in cross section, the chamber consisting of two semi-cylindrical parts 28, 29, connected by a central part 30, the three parts being separately bored to fit a cylindrical piston 31, fitted upon a driving shaft 9 and provided with radial chambers Z and diaphragms m, steam being admitted and exhausted through passagesand openings of a similar kind to those already described.

Where it is desired that the motor should work as a compound .engine, two diaphragms may be used arranged at unequal distances apart, the exhaust from the smaller chambers being used to supply the larger chamber. or, cylinders of similar circumference, but of greater width, may be placed side by side with the principal ones.

I have described the invention, with reference to the drawings, especially as applied to motive power engines, but by driving the pistons round by the driving shaft, instead of causing them to be driven, it is evident that it may be used instead as a pump.

I am aware that, prior to my invention, rotary motive power engines and pumps have been made with cylinders in which revolve radial pistons upon a driving shaft, operating in conjunction with radial diaphragms. I, therefore, do not claim such a combination broadly, but

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, in a rotary motive power engine, of a cylinder (1, cylinder ends a, d, bearings and stufling boxes 6, f, shaft g, radial pistons it having curved surfaces on their sides 3' and ends 71, b radial diaphragms m, radial chambers Z, recesses or enlargements n, inlet passages 1, 1, and exhaust passages 2, 2, through the central part of the piston h, project-ing boss p, cover g, concentric recesses 3 and 4, inletpipe 11, eX haust pipe 12, holes 5, 6, 7, from the recess 3, and holes 8, 9, 10 from the recess 4, cover 1 on cylinder end cl, central recess in cover 1", loose disk 19 in recess, passages 13, 14, 15, partly through cylinder end d opening at their outer parts through passages 17 into openings 22 in disk 19, of such shape that steam admitted into them is directed in one position of the disk 19 into one of the radial passages 18 and to one side of the diaphragm m, and when the disk 19 is turned, into the other of the parallel radial passages 18, and to the other side of the diaphragms, the radial passages 18 passing to enlargements at on one or other side of the diaphragm m, according to the position to which the disk 19 is turned, and means for turning the disk 19, all substantially as set forth.

2. In a rotary motive power engine, having a cylinder, radial sliding diaphragms, and a central driving shaft, the piston it having its outer ends 72 7L2 curved to fit in the cylin der and its sides 9' which connect the ends h, h curved to a much larger radius so as to leave spaces 76, k between them and the inside of the cylinder, packing at i, i, in the ends h, hf of the piston, and concentric passages 1, 1, and 2, 2, through the body of the piston for the inlet and outlet of steam, the inlet passages 1, 1., being at a greater radial distance from the center than the outlet passages, 2, 2, substantially as set forth.

3. In a rotary motive power engine, having a cylinder, a central driving shaft and re volving piston, and radial sliding diaphragms, the combination with the sliding diaphragms, of a concave sliding piece 23, pivoted by a pin 24 upon the rounded end of the sliding diaphragm m, spring packing strips 26, and a radial passage 27 having lateral openings at its lower end each covered and uncovered alternately by the packing strips 26, substanti ally as set forth.

4. The reversing disk 19 having pairs of triangular shaped openings 22, their outer longer side concentric with the edge of the disk and their outer corners corresponding with the inner ends of the passages 18, and their inner corners corresponding with the opening 17 for the inlet of steam, substantially as set forth.

5. In a rotary engine, a cylindeiga central shaft, a radial piston mounted on said shaft and revolving with it in said cylinder, a plurality of sliding diaphragms mounted to rotate said piston and provided with inlet and exhaust passages for the steam, and means carried by said diaphragms for alternately opening and closing said steam passages, substantially as described.

6. In a rotary engine, a cylinder, a central shaft, a radial piston mounted on said shaft and revolving with it in said cylinder, a plurality of sliding diaphragms mounted in the periphery of said cylinder, said diaphragms being adapted to rotate said piston and being provided with inlet and exhaust passages for the steam, swinging members carried by said diaphragms, and means carried by said diaphragms for alternately opening and closing said steam passages, substantially as described.

7. In a rotary engine, a cylinder, a central shaft, a radial piston mounted on said shaft and revolving with it in said cylinder, a plurality of sliding diaphragms mounted in the periphery of said cylinder, said diaphragms being adapted to rotate said piston and being provided with inlet and exhaust passages for the steam, swinging members mounted on the inner ends of said diaphragms, and means connected to and actuated by said swinging members for alternately opening and closing said steam passages, substantially as described.

8. In a rotary engine, a cylinder, a central shaft, a radial piston mounted on said shaft and revolving with it in said cylinder, a plurality of sliding diaphragms mounted in the periphery of said cylinder, said diaphragms being adapted to rotate said piston and being provided with a central steam passage and branch passages extending from said In Witness whereof I have hereunto set my central passages near the inner ends thereof, hand in the presence of two Witnesses. swinging members mounted on the inner ends of said diaphragrns and packing strips con- BASIL ALFRED SLADE' nected to said swinging members and actuat- Witnesses:

ed to alternately open and close said branch ARTHUR E. EDWARDS,

passages, substantially as described. D. K. BOYLE.

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