US681180A - Engine. - Google Patents

Description

no. 6s|,|so. Patented Aug. 27, wol..

` J. c. BAKER.

ENGINE.

(Application filed ept. b, 1900.)

(no Model.) V a sheets-sheer 2.

Hdhjasses Patented Aug. 27, |90I. J. C. BAKER.

No. 6a|,|a0.

ENGINE.

(Application led Sept. 5, 1900.)

3 Sheets-Sheet 3.

(lo Model.)

6 ...y Hl 6 To all whom it 17mg/ concern.: Beit known that I, J osEPH CLARKBAKER, a citizen of the United States, residing at Warren, in the county of Tyler and State of Texas, have invented a new and useful Engine, of which the following is a specification. This invention relates to steam-engines in general, and more particularly to the class of reciprocating steam-engines, although the ini i ventionisequallyapplicabletoenginesdriven N by any fluid-pressure, the object of the invention being to construct an engine in ,which v both live steam and exhaust-steam may be utilized against a single piston to reciprocate it. i i v Further objects and advantages of the invention will be apparent from the following i description. i In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a side elevation showing the complete engine, the shaft being shown in section and the ily-Wheel omitted. Fig. 2 @is a section on line 2 2 of Fig. 1, the piston and its rod, with the shaft, eccentrics, and i some of the connected parts, being in elevation. Fig. 3 is a section on line 3 3 of Fig. 2. Fig. 4 is a section on line 4 4 of Fig. 2. Fig. `5is an elevation showing one of the valveoperating mechanisms.

Referring now to the drawings, the engine y of the present invention consistsof acylinder 5, having three steam-chests 6, 7, and 8,

and in this cylinder is disposed a reciprocatory piston 9, having a rod 10, which connects i i with a cross-head 1l, with which is connected la connecting-rod 12, leading to the crank 13 `of the engine-shaft 14.

Leading to the steam-chest@ is a feed-pipe i 15, including a valve 16, the casing of which `contains two valve-seats 17 and 1S, of which the former is the throttle-seat and receives the throttle-valve head 19, operated by a screw-stem in the usual manner. The valveseat `13 is located `between the :seat17 and i the steamy-chest and is adaptedto receive a reciprocatory` valve-head 20, the stem 2l of which is pivoted to a bell-crank lever 22,

y `which is in turn connected with an operatingi i rocker 23. Thisrocker 23 is pivoted upon a `1 standard 24 and has a connecting-rod 25 ad- JOSEPH CLARK BAKER, OF VV-ARREN, TEXAS.

ENGINE.

sPncInIcArIoN 'forming part of Lettere raten'. No. 681,180, dated August a?, 1901. Application filed September 5, 1900. Serial No. 29, 065. (No model.)

just-ably connected therewith and leading to the collar 26 of a common form of ballast-ball device. Thus as the collar is raised by the outward swinging of the ballast-balls the rocker is moved pivotally to close the govern ing-valve and cut oft the supplyof steam.

Steam-ports 30 and 31-lead from the chest 6 to the front and rear ends of the cylinder, respectively, Aand these ports are opened and closed alternately by means of rotary valves 32 and 33,- disposed in cylindrical casings 34 and 35, which communicate with the ports and the steam-chest, these rotary valves being substantially triangular and having their edges snugly fitting against the inner faces of the casings. The casings 34 and 35 communicate with the chest 6 through ports 36 and 37, which lie at right angles to the ports `30 and 31, so that for each rotation of one hundred and twenty degrees the ports 36 and 37 will be brought into communication and then out of communication. To operate `these valves to bring their respective ends of the cylinder into communication with the chest 6 alternately, the end of each valve eX- terior` to the chest is provided with a ratchet wheel, (shown'at 38 and 39,) and upon the projecting ends of the valves are pivotally mounted rockers 40 and 41, carrying pawls 2 and 43, the pawls and ratchets being oppositely disposed and the rockers being connected with a common rod 44, so that as the rod is reciprocated the rockers Will be operated to engage their pawls with the ratchets and rotate the valves alternately to communicate theiports governed thereby. The rod 44 is connected with a rock-lever 45, which `is operated from aneccentric 46 upon shaft 14 through an eccentric-rod 47.

The chest;7 isconnected with the ends of the cylinder` 5 by means of exhaust- ports 49 and 50, and leading from the chest 7 to the chest 3 is an exhaust-passage 51, the ports 49 and 50 being brought alternately into communication with the` passage ltthrough the medium of an oscillatory valve 52, of "disk shape to t snugly in chest 7, this valve 52 having a recess 53in its inner face, which` covers first port 49 and the passage. 51 and then port 50 and passage 5l. This valve is oscillated by means of a connecting-rod 54, attached to the crank-shaft 55 of the valve the opposite side of the piston is continuous during the entire stroke of the piston. The

obj ect in admitting the live steam after a portion of the strokehas been completed is in org der that the exhaust-steam may be utilized over again on the face of the piston'by returning it from the exhaust side to the feed side i of the vpiston duringthe initial movement of the piston. To .thus supply exhaust-steam to the feed side of the piston at both strokes of the piston, the chest 8 and its cooperating valves 60 and 6l are provided. The valves 60 and 6l.are cylindrical rotary valves,.and each :hasa passage cut in its face, these .passages of the valves being` adapted tocommunicate the :feed-ports 62 and 63 alternately with `the chest8, which communicates with the chest 7 through the exhaust-passage 5l.

,Each of the valves 60 and 6l has a disk 64 and 65, respectively, upon the exposed end of itsstem, said disks having lugs 66 and 67, respectively, each having .a flat face .and .a curved face, the lIiat faces beingdisposed to- Wardeach other orrin opposite directions,-as shown kin Fig. 6. These lugs are adapted for engagement alternately by oppositely -disposed triggers 68 and 69, which are springpressed and are mounted upon a reciprocatory rod 70, operatively'conuected Withthe rocker 45. v.Thus as the rod 70 is reciprocated its triggers alternately engage .and release the lugs to open the valves and permit them `to close, the closing of the valves'beingaccomplished by means Vof springs 7l and 72, disposed in-casings 7 3 and 74, and against which press pistons. having rods 75 and`7 6, pivotally connected Withcran k-arms 7 7 and.78, fixed to the valves. y

The operation of theengine is as follows:` The valvesbeing in the positions shown, the piston is traveling toward the rear of the cylinder and the exhaust-port 50 is in communication With the exhaust-passage 5l, as in-` dicated in dotted .lines in Fig. 1 of the drawings, the chest 8 being in communication with the front end of the cylinder through the port 62. The exhaust-steam from the rear end of: the cylinder then runs to the front end of the cylinder and feeds thereinto` during aportion of the stroke of the piston, the ` ports 30 and 31 being at this time cut off. When the stroke is partly completed, the valve is closed and valve.32 is opened, when the live steam enters through .port 30, t0 .thefront side of the'piston and drives the vrod 84.

pose a valve 8O is provided in the exhaust pipe 8l, which leads from the exhaust-passage 51, said valve .having itsv stem 82 connected with a bell-crank lever 83, which is in turn connected with rocker 23 by means of a Thus when there is an excessive accumulation of steam in chest 8 the speed of the engine decreases, when the ballast-balls -drop and open the valve 8l to permit exhaust of steam, the governor-valve being at the same time opened to admit more steam.

When the engine is to be used without utilizing the exhaust-steam in the manner above described, a gate-valve86, Which'governs the end of .the exhaust-passage 51 where it-enters chest S, is closed and the stem of fvalve 8O is 'released from its operating mechanism and-is opened to permit the exhaust to pass directly from the exhaust-passage through the valve. The gate-valve has Aa yro'd 87, through .the medium of which saidvalvemay be operated by hand.

'What is claimed is* 1. A steam-engine comprising a cylinder having a .piston therein, a steam-chest for live steam having ports communicatingwith the ends of the cylinder, valves adapted 'to open and close said ports alternately, exhaust-.ports for the-cylinder, an exhaust-pas*- sage, a valve adapted to communicate theex'- haust-passage With the exhaust-ports alternately, a chest communicating with :the exhaust-.passage, kand valved ports communicating the last-named chest with the ends of the cylinder, said last-named valves being adapted for operationalternately and inadvance of the valve of the live-steam chest.

2. Avsteam-engine comprising a cylinder having a piston therein, a .steam-chest for live steam, valved ports connectingsaid chest with opposite ends ofthe cylinder andadapt- IOO ed for alternate operation, Aexhaust-ports for the cylinder, an exhaust-passage, a valve for communicating the exhaust-passage with the exhaust-ports alternately, a chest connected with theexhaust-passage, valved ports lead- IIO ing from the last-named chest tothe ends of the cylinder to supply exhaust-steam thereto alternately, a relief-valve, a governor .connected with the relief-valve for operating it, and means for opening the live-steam `'feedports subsequent to the opening of the exhaust-steam feed-ports.

In testimony that I claim the foregoing as my own I have hereto affixed myv signature in the presence of tWo Witnesses.

JOSEPH CLARK BAKER. Witnesses:

T. 1B.' BEATY,

C. Y. GREGORY.

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