US629297A

US629297A - Rotary engine.

Info

Publication number: US629297A
Application number: US68388298A
Authority: US
Inventors: John L Keil
Original assignee: E L KEIL
Current assignee: E L KEIL
Priority date: 1898-06-18
Filing date: 1898-06-18
Publication date: 1899-07-18
Anticipated expiration: 1916-07-18

Description

Patentedluly l8, I899.

J. L. m. ROTARY ENGINE.

(Appkcl-tmn 8106 June 18 1898) a Shank-Shan I. 1

(In Ian den.)

" UNITED STATES dbl-1N L. KEIL, or BLAIR,

PATENT. @FFICEL' KEIL, or sfAME PEACE;

ROTARY enema.

srncrrrcarrolv forming part of Letters Patent 110,629,297, dated July 18, 1899.

Application filed June 18, 1893;

To all whom, it may concern:

Be it known that I, JOHN L. KEIL, acitizenv of the United States of America, residingat;

The object of this invention is to econom-I' ically utilize steam, compressed air, or gas in the propulsion of machinery. i My invention consists in the construction, arrangement, and combination of elements hereinafter set forth, pointed out in my claim, and illustrated by the accompanying draw{ ings, in which- I 1 Figure 1 is an elevation of one side of the complete engine. Fig. 2 is a verticalsection of the engine. Fig. 3 is a vertical section of the engine at right angles to the section of Fig. 2.. r l In the construction of the engine as shown the numeral 10 designates a casing mounted on a base 11 and provided with removable heads12 13. Tl1eheads12 13are formedwith annular grooves 14 15, respectively, on their inner faces, which grooves mate with grooves 17 18, formed in the casing 10 and provided with cylinders, within which the piston-heads travel. A steam-pipe 19 is secured at one end to the central portion of a valvechamber 20, located above and fixed to the casing 10, and a throttle-valve 21 is mounted foreseih lation in said valverchamb'er. Two ingress-I ports 22 23 lead from thevalve-chamber'2Q to the cylinders. Rocking valves 24 25 are seated in and control the passage through the ports 22 23. A shaft 26 is mounted for rotation in the casing 10 and heads 12 1-3, concentrio with the annular cylinders, and hubs 27 28 are mounted on and keyed to the said shaft within the casing, which hubs are securedtoget-herbybolts 29 29. Packing-rings 303030 30 are mounted on the hubs 27 28 and form-steam-tight joints between said hubs and the casing. Piston-heads 31 32 are fixed to the hubs 27 28. in diametrically opposite positions and project from the hubs into the- Serial No. 683,882. (No model.)

for vertical reciprocation'in said seats. Packportion of thesliding abntments 35 '36, and

expansive springs 39 40, mounted in said sliding abutments, impinge against the plates and hold the same in contact with the hubs 27 28 when the sliding abutments are in their lowest positions. An exhaust-cavity 41 is formed in the casing 10 between the cylinders, and exhaust-ports 42 42 open from the respective cylinders into said cavity, which ports are located adjacent to and on opposite sides of the vertical plane of the sliding abutments 35 36. Condensation-ports 44: 45 are formed in the lower portion of the casing 10, communicating with the cylinders, and petcocks 4:6 47 control the passage through said ports. An exhaust-port 48 leads through the lower portion of the casing 10 from the exhaust-cavity4l.

-T he throttle-valve 21 is provided with a crank 49, and a hand-lever or manually-reciprocated rod 50 is connected at one end to said crank and supported on a bracket 51,

.ing-plates 37 38 are mounted in the lower fixed to the casinglO. I Cranks 52 53 arefixed I reciprocation in oscillating levers 64 65, fulcrumedon the cylinder-head 12 by means of stub shafts or pivots 66 67. The blocks 62 63 are both connected to a connecting-rod68'at one end,and the oute r end of said rod is pivoted to the lower end of a manually-operated lever .69.. ,The lever 69 is keyed near. itscenter on one end of a rock-shaft 70, which shaft is horizontally positioned and extends from side to side of the engine. A piston 71 is mounted for reciprocation in a cylinder 72, fixed to the basell, and is connected to one end of each oscillating lever v64 65. A frame 73is mounted on theshaft 26 for reciprocation transversely of saidshaft and isconnected at one end to one end of the lever 65. A cam-wheel 74 is loosely mounted on the shaft 26 and is so arranged relative to the frame 73 as to reciprocate said frame. A ratchet-wheel 75, having ratchets facing both directions,is mounted on the shaft I the casing 10.

26,and spring-pressed detents 76 77,0ppositely arranged on the cam-Wheel 74, engage the ratchets. I in the exhaustports 42 43, and gear-Wheels S0 81, fixedto said valves, are engaged by rods 82 83, fixed, respectively, to the lever 69, and a crank-arm 84, fixed to the shaft 70. An oscillating lever 85 is mounted on a pivot 86, fixed to the head 12, and an antifriction-wheel 87 on one end of said lever travels in a camgroove in a cam-wheel 88, mounted on the shaft 26. The outer end of the lever 85 is slotted, and a block 89 is mounted in the slot therein. A connecting-rod formed of two sections 90 91, telescoping relative to each other, is connected at its lower end to the block 89 and at its upper end to a crank 92, fixed to a rockshaft 93, mounted in a bracket 94, rising from The section 90 and a set-screw 95 are mounted in the section through a slot 96 in the section 91. A collar 97 is rigidly mounted 011 the section 91, and a spring 98, of expansive character, mounted on the rod, impinges at one end against said collar. The section 90 is screw-threaded at 9'9, and a collar 100, interior-1y screw-threaded, is mounted adj ustabl-y on the said screw-threaded portion and receives impingement of the lower end of the spring 98. The rock-shaft 93 is rigidly secured to one end of crank-arms 101 102, which extend horizontally to and are connected with stems on the sliding abutments 35 36. A slotted lever 103 is fulcrumed at its center on a pivot 104, fixed to thccylinder-' head 12, and a block 105 is mounted for re ciprocation in said lever. A connecting-rod 106 is fixed at its upper end to the block 105,

and the lower end of said rod has a pivotal connection to the cam-wheel 88. A connecting-rod 107 is fixed at one end to the block 105 and at the other end to the lever above the rock-shaft 70. The outer end of a rod 108 and the upper end of said rod is fixed to a crank 109 on a shaft 110, which shaft has a bevel-gear connection with a centrifugal governor mechanism, and the governor mechanism is belted (Q-$116 shaft 26. The opposite side of the engine is provided with a d uplicate of the mechanism described.

In practical use the steam enters through 'thethrottle andone of the rocking valves and engages one of the piston-heads, a backing being formed by the sliding abutment 35. The piston-head is caused to travel to the point A by the steam-pressure, and at this point the steam is cut off by the automatic rotation of the rocking valve, and the expansion of theconfined steam impels the pistonhead to the exhaust-port, at which time the expansion of the steam has entirely been utilized. \Vhen the-first piston-head makes a one-half revolution, the rocking valve opens to the other cylinder, and entering steam acts upon the other piston-head in like manner.

Rocking Valves 78 79 are mounted The sliding abntments 35 36 automatically rise to permit the passage of the piston-heads after the exhaust from the respective cylinders, and the governor mechanism controls the entrance of the steam by automatically opening and closing the rocking valves.

By the use of the hand-lever 69 the engine may be reversed by reversingthe passage of steam from one rocking valve to the other.

By arranging the exhaust near the end of the stroke I provide for utilizing the entire expansive energy of the steam.

By the use of the double piston-heads I provide for the action of steam on one head or the other almost continuously, thus avoiding dead-centers and reciprocating movements.

It is obvious that gas, compressed air, or similar expansive medium maybe employed 7 in place of steam.

1 claim as my invention- An engine comprising a casing having two or more annular cylinders, two concentric pistons mounted for travel in said cylinders, a

shaft to which said concentric pistons are rig-' idly connected, bolts transversely seated in and rigidly connecting the hubs of'the concentric pistons, steam-ingress ports leadin g to said cylinders, a throttle-valve arranged for manual actuation and controlling said ingress-ports, rocking valves mounted in and controlling said ports adjacent the cylinders, cranks attached to said rocking valves, rods attached at their upper ends to said cranks,

blocks carried on the lower ends of said rods,

levers mounted for oscillation, in which said blocks are slidingly mounted, dash-pot mechanism connected with the levers, a frame mounted for reciprocation and oscillation transverselyof the shaft'and attached to the dash-pot mechanism, ahand-lever controlling the oscillation of the frame, an adjustable cam-wheel on the main shaft, a governor, connections between the cam-wheel and governor and controlled by the hand-lever controlling the oscillating levers, sliding abutments arranged .for alternate rectilinear re- JOHN L. KEIL.

\V itnesses:

S. XV. EVANS, O. G. KEIL.