US346741A

US346741A - X elliott

Info

Publication number: US346741A
Authority: US
Publication date: 1886-08-03
Anticipated expiration: 1903-08-03

Description

2 Sheets-Sheet 1.

(No Model.)

F. 0. ELLIOTT.

STEAM ENGINE.

5X um,... P

Q Vi lm conca (No Model.) v 2 Sheets-Sheet 2.

P. O. ELLIOTT'.

STEAM ENGINE.

No. 346,741. men'wflmg.` s, 1886.

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UNITED lSrrvrns PATENT OFFICE.

FRANKLIN O.- ELLIOT'I, OF SPARKLING CATAVBA SPRINGS, N. C.

STEAM-ENGlNE.

SPECIFICATION forming part of Letters Patent No. 346,741, dated August 3, 1886.

Application filed April l, 1886.

To @ZZ whom t may concern:

Be it known that I, FRANKLIN O. ELLIorr, a citizen ofv the United States, residing at Sparkling Catawba Springs, in the county of Catawba and State of North Carolina, haveinvented certain new and useful Improvements in Steam-Engines, of which the following is av specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in rotary steam-engines, and it has for its object to utilize the direct force of the steam Initially and the expansive power of the saine subsequently, in order to economize fuel and secure the full effect of the steam, as more fully hereinafter specified.

The above-mentioned objects I attain by the means illustrated in the accompanying -drawings, in which- Figure l represents a longitudinal vertical sectional view of an engine constructed according to Iny invention; Fig. 2, a transverse vertical section taken on the line a; a: of Fig. l; Fig. 3, a similar view taken on the line y y of Fig. l; Fig. 4, a transverse section taken on the line c e of Fig. l; Fig. 5, a longitudinal sectional view of the governor; Fig. (5, a detached view showing the front of the partition which divides the two cylinders of the engine, and Fig. 7 a rear view of the same.

The letter A indicates the cylinders of the engine, which are two in number, and setlon gitudinally in line with each other, being divided by a partition, I3.

C indicates the heads of the cylinders,whieh are provided with central stufing-boxcs, D, through which the longitudinalshaftE passes. The said shaft at one endis journaled in a bearl ing, F, in which it is adapted to rotate freely.

The other end of said shaft is ilanged and connected by acoupling-box, G, to the iianged end of a stationary pipe, II, in such manner as to rotate independently thereof, for the purpose more fully hereinafter described. The forward end of the shaft is bored, as indicated by the' letter I, and has connected to it a governor, Ii, which consists of a short cylinder, having a central passage divided by means of a partition,L, asindieated in Fig. l of the drawings'. The said cylinder is bored. transverse] y, forming recesses M at opposite sides, in which are adapted to work the pistons N, mounted upon Serial No. 197,428. (No modelj a reciprocating piston rod, I), extending through the stuffing-boxes S at the ends of the recesses before mentioned. The eXtremities of said pistonrod are slotted, and through the slots extend the short arms of the anglelevers T, which are fulcrumed to the brackets U, forming part of lhe governor. The central passage of the governor connects bya passage, V, with the central passage on the other side of the partition, in order to admit steam interinittently to the hollow portion ofthe driving-shaft ofthe engine,and fromthence through the port X in the rotary piston Z to the first cylinder of the engine.

The letter A indicates two ports leading from the steam-passage in the governor to the outer ends of the chambers in which the governing-pistonstravel, in order to balance the same and enable them to operate freely.

Above the 'cylinders are located two valvechests, B' C', in which are adapted to slide the ings, with a gradual curve at one side, so as topermit the valves to fall gradually, without any jerking or interrupted motion. The dividing-pa-rtition between the two cylinders is provided with a recess, H', in front, from which extends a passage, I', leading into the second cylinder. rlhe piston is so shaped as to cover the recess at proper portions of its revolution, and open itat other portions, so as to discharge the exhaust-steam int-o the second cylinder at proper intervals. The pistons at their edges which abut against the interior of the cylinders are slotted longitudinally, and have located in said slots movable packing-plates K', of brass or other similar metal, which are pressed normally outward, forming a packing for the pistons.

The letter L' indicates the final exhaustpipe, extending from the second cylinder into the open air; and M', two escape-pipes, provided with suitable valves extending from the lower portions of the respective cylinders for IOO the escape of water of condensation from the same.

Between the outer surface of the governorcylinder and one of the governor-levers may be located springs N', which will hold the parts normally, but permit the weights to act to shift the governing-pistons at proper times to admit the steam intermittently to the cylinders. A

The operation of my invention is as follows: Steam being admitted through the inlet-pipe enters the governor, and from thence passes into the rst cylinder of the engine, causing its piston to rotate. The governor being in the position shown in Figs. 4 and 5, the steam passes into the recess M and through the port V on its way to the cylinder. As the governor rotates,the weighted levers I operate to shift the pistons N, cutting off the iiow of steam to the engine until the governor has turned to its first-mentioned position, thus admit ting the steam intermittently to the cylinders.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

l. The combination, with the eylinders,their pistons, and sliding valves, ofthe central shaft and governor, the latter having transverse recesses and reciprocating pistons controlled by weighted levers, and suitable ports opened 3o and closed by said levers, so as to intermittently admit steam to the engine, substantially as specified.

2. The combination, in a rotary engine, of the cylinders located longitudinally in line 3 5 with each other, the central shaft bored longitudinally at one end, the piston located thereon and having a port for the admission of steam to themain cylinder, and the governor, whereby steam is intermittently admitted to said cyl- 4o inder, substantially as specified.

3. The combination, in a rotary engine, of the cylinders arranged longitudinally in line with each other, of the central shaft and rotary pistons, the reciprocating valves, the 4 5 governor adapted to admit steam intermittently to the main cylinder, and the dividingpartition recessed and provided with suitable ports, whereby the exhaust-steam from the main cylinder is passed to the secondary eyl- 5o inder, so as to operate expansively therein, substantially as specified.

In testimony whereof I alx my signature in presence of two witnesses.

' F. O. ELLIOTT.

Vitnesses:

F. L. CLINE, J. C. MARTIN.