US819752A - Steam-motor. - Google Patents

Description

No. 819,752. PATENTED MAY 8, 1906. L. GILMORE, JR. 4STEAM MOTOR.

APPL-IOATIO FILED MAR. 27, 1902.

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'1,111111(111111111111"A'lll'llillllli/ No. 819,752. PATENTBD MAY a, 1906.

' L. GILMOREQJR. STEAM MOTOR.

APPLICATION FILED MAR.27, 1902.

2 SHEETS-SHEET 2.

W/T/VESSES.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented May 8, 1906.

Application led March 27, 1902. Serial No. 100,306.

To @ZZ whom it 11mg/ con/cern,.-

Beit known that I, LYMAN GILMORE, Jr., a citizen of the United States, residino` at Colfax, in the county of Placer, State of-)Oalifornia, have invented certain newand useful Improvements in Steam-Motors; and I do hereby declare the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention is an im rovement in an upright steam-motor 3 and it as for its object to produce a motor which will possess the requisite strength and durabilityT and which will be especially simple in construction and eflcient in operation.

I have arranged the parts in such a manner that the maximum effect of the steam is utilized, and in addition to the direct impelling force of the steam I have employed a combination of ejectors to create both a suction and forcing of the steam, which when added to the direct force manifestly increases the percentage of eiciency.

My steam-motor is designed to meet the necessity of a reversible motor to take the place of non-reversible turbine and rotary steam-engines and is adapted to marine use, is positive in action, controlled entirely by one lever, and readily reversed.

The motor is economical in the use of steam, using it from a high to an extremely low pressure with but a minimum of operative parts, the action of the steam upon the operative parts being similar to an ejector which feeds the boiler against its own pressure by adding momentum to the feed. The motor, however, adds momentum to an increased volume of steam, thereby increasing the power by momentum, as Well as by increasing the volume of the steam per s uare inch with the same pressure as that o `the steam as it issues from the ej ector-nozzles.

The manner in which the steam is circulated around and upon the operative parts I am enabled to accomplish the above re-V sults by the mechanism illustrated in the accom panying drawings, in which similar letters of reference represent corresponding parts.

Figure 1 is a vertical central section of the motor, Fi 2 is a section taken along the line X X of ig. l and Fig. 3 is a centra vertical section taken in a direction at right angles to that shown in Fig. 1, the central spindle and connecting ily and belt wheels being shown in elevation.

I will now explain the construction and operation of the invention.

The central disk A is keyed to the central shaft B and rotates in an annular cylinder C. Connected with this disk A are the heads orl fins D, which are braced to the central disk by means of thin central webs, the latter be` similarly formed, but directed upward on opposite sides of the central shaft B. The

inner surface of the cylinder O is recessed at several points a to form chambers which allow the steam to circulate between and operate on a plurality of heads or fins.

In order to control the `ilow of steam through the ejectors F and F', I have provided the slide-valve G, which has an induction-port b and is operated by the rod H to start, stop, and reverse the motor. Directly below the ejector-nozzles F and F is a secondary valve I, operated by the rod J. The rods H and J are connected to the leverfK on opposite sides of the fulcrum thereof. Leading from the valve I and communicating with the cylinder C at opposite extremities ofthe horizontal diameter thereof are the conduits L and L2, which supply the ejectors with hot steam from the exhaust acting on the pe IOO Assuming that the parts are in relative po- I sitions shown, it is manifest that as the steam enters the inductionort b and issues from the nozzle F that t e disk A will revolve through the impact of the steam on the heads. Now to aid this revolution of the central disk and heads the suction from the exhaust in the conduit L caused 'by the ejectors acts against each head through the medium ofthe variable passages a. Said suction then unites with the steam discharging from the nozzle F and fills the passage-Ways leading from the conduit L tothe cylinder C with steam, which is discharged against two ofthe heads continuously. The escaping steam 1s then compressed between the second and third head, and as the heads move forward the steam is released at the valve M and expands against the remaining heads through the variable passages until it reaches the exhaust .0, where it is exhausted practically Without pressure. A partof the exhauststeam i`s caught by the suction, acts on the heads or ins, and supplies the ejectors with hot steam and prevents condensation, acting in a direction opposite to that of the steam, but on the opposite side of the axis of revolution of the disk. It will be seen that the variable passages in the cylinder are carried inwardly to a sharp point at a number of places to come in contact with the periphery of the heads, thus causing the passage of steam to be shut off and turned on automatically and allowing it to expand to its full capacity before reaching the exhaust. By operating 4the lever K the port b will allow the steam to enter the ejector F, while the valve M will close and the valve M open, thereby reversin the action of the motor.

order to reduce to a minimum the friction of the revolvin shaft B, I have employed the roller-bearings which are inclosed in a steel casing Q.

Each of the heads or fins D is provided with a peripheral packing-rin R, which is held outward against the cylin erCby means of a yielding spring 1". The wedge-shaped packing S and packing-ring t are to prevent the escape of steam through the bearings of the motor.

The motor lis provided with the usual liy and belt wheels T and U, which serve their usual functions.

I am aware'that various changes in the form and proportion of arts herein shown c an be made without eparting from the principles of my invention.

and the cylinder and adapted to conductsteain to opposite sides of the piston, a piston rotatably mounted in said cylinder, said pis- `ton comprising a disk having radial fins,

valves controlling said cylinder'passage-ways, and said ejector-passages respectively, and m'eans for operating said valves, substantially in the manner and for the purpose set forth. l

2. In a steam-motor, a steam-chest, a cylinder having suitable induction and exhaust ports, and steam passage-ways therein, a plurality of U-shaped ejectors communicating respectively with the steam-chest and the cylinder and adapted to conduct steam to opposite sides of the piston, U-shaped nozzles arranged in said ejector-passages, a piston rotatably mounted in said cylinder and comprising a disk having radial inls, valves controlling said cylinder passage-ways and said ej ector-passages respectively, and means `for operating said valves.

3. In a steam-motor, an annular cylinder having suitable induction and exhaust ports and having variable passage-ways leading from the exhaust downwardly on each side thereof, ejectors, conduits communicating with said ejectors and the variable passageways, a steam-chamber surrounding the ejectors and communicating therewith, a piston rotatably mounted in said cylinder and hav-I ing radial fins adapted to lit steam-tight with portions of the walls of the cylinder, valves controlling said ejectors, the conduits and the passage-ways respectively, and means lfor operating said valves.

In testimony whereof I aflix my signature 1n presence of two witnesses.

LYMAN G1LMoRE,JR.

Witnesses:

GEORGE PATERsoN, ELIZ. KINCAID.

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