US1717591A - Fluid-actuated engine - Google Patents

Description

June 18, 1929. Q B, WESTON 1,717,591

FLUID A'CIUATED ENGINE Filed April 24, 1926 5 Sheets-Sheet 1 92 I CKWW 4. m

IN V EN TOR.

BY Wjz z MA A TTORNEYS.

June 18, 1929. c. B. WESTON FLUID ACTUATED ENGINE Filed April 24. 1926 3 Sheets-Qheet 2 Q y W 6 7% IN V EN TOR.

A TTORNEYS.

3 Sheets-Sheet 3 INVENTOR.

0 07 .UHM'E DH O Q/ m J A L M r M A TTORNEYS.

June 1929. c. B. WESTON FLUID ACTUATBD ENGINE Filed April 24, 1926 cLARENcn B. WESTON. or, ER E, rENNsYLvlmrA,nssreivon, LBWY MEsnEEAssIen-QI PATEN MENTS, TO BUTC YRUS- ERIE COMPANY, OF SOUTH. MILWAUKEE,WISCONSI1\T, A/ICOR- PORA'I'IQN or DELAWARE.

Application filed April '24,

This invention is 1 designed to control fluid-actuated engines'so as to positively"reverse them in a simple-manner. In the preferred form the reversal is accomplished simultaneously with the operation of the throttle, thus adapting the device to such engines as are used for excavating machines and similar "deviceswhere the reversal factors are of great importance.- Tlie'controlling mechanism is preferably mounted on the engine shaft and in the present invention is housed in a cylindrical carrier which has some fly wheelaction, the carrier properly housing the mechanism. In carrying out the invention a double fluid-actuated control is provided so that the eccentric is positively positioned in both directions through the pressure oi the fluid-actuated means. Details and features of the invention will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as follows:

Fig. 1 shows a plan View.

Fig. 2 a side elevation, partly in section.

Fig. 3 a sectional View throughthe devices I on the line 3-3 in Fig.4 showing the fluid actuated controlling means' Fig. 4 a section on the line 44in Fig. Fig. 5 a sectional view of the throttle and" controlling valve, the; throttle being closed and the valve setting the engine'to a forward direction of movement.

Fig. 6 a similar view with the throttle. valve slightly opened and the controlling valve in a position for a forward movementof the engine.

Fig. 7 a section on the line 7-7 in Fig. 4. Fig. 8 a diagram showing the relative crank and eccentric positions for Fig. 3.

Fig. 9 a sectional view of the controlling mechanism on the line 99 in Fig. 10, the mechanism being set to drive the engine 7 in a reverse direction.

Fig. 10 a section'on the line 1010 in Fi 1 I 1 Fig. 11 a sectionalview of the throttle and controllingvalve inposition to throw the controlling mechanism tothe position of Fig.9.

Fig. 12 a sectional view of the throttle and control valve, in position for reverse movement as indicated in'Fig. 9, the throttle valvebeingslightlyopon.

I FLUID-nominate]: ENGINE crank and eccentric positions of Fig.9.

on the line1l 14 in 192a. "SeriaIINo;164390.;

F ig. 13 a diagram indicating the relative Fig. 14 is a section Fig. 11."

1 marks the frame oifjthe"engine,f2. the Cyl111ClGIS,' 3 the valve h t 4 t e crank shaft, l the cranks/l bearingsfor the crank shaft. 5' connecting rods; 6 cro s h ad 7" cross head guides, 8 piston rods, 9 pistons... 10 steam port's leading' from'thecylinder to the engine valve chamber l l, 12"steampas-TJ sages leading from the" chamber 11 through a port 13 to the throttle valve chamber 145 15 exhaust ports leadingfromythe valve chamber 11, 16 the end elementsfof the en gine valve 16, said'elementsjoperating]across the ports 10 and 15," 17 the centerelement.

of the valve operating over the ports. or passages '12. This is the'ordinary cylin-" drical engine valve construction cutting off the fluid on the inner'end of the endelenient" valves 16. The rod 18 is connected with rocket 20-;formed on a sleeve 21'. The'sleevo 21 is carr ed in a bearing QQand'is provided with a rocker 28. Th'e'rocker 23 is connected by' an eccentric rod 24 with an eccentric 27 carried by a shaft 28. The shaft 28' e'x-" I so strap 25 and the eccentricstrap is'mounted on an eccentric26. The rod 191mg a rocker tends through the sleeve 21'and has a rocker,

29 at its outer end. The rocker 29 is cone nected by a link 30 with a bell crank lever'ff 31. "The bell crank lever 31 is'mounted on. a pin 32 and is connected by a link33 with 1 Thus itwill be seen that the link 38' is quar ter-ing to the rod 24 211116. asthecranks are set quartering: the valve movement for each engine istimed properly with the qu'arterp ing cranks and that the throwing ofhthe eccentric for one of the engines throws the" 1 eccentrlc for the other'of'the engin a d.

that varying the eccentric with relationjto i the crank shaft similarly "varies the throw for bothcylinders. 1 i A throttle valve34 is of a 'sliding type'op-Y crating in a valve face 3? in thechamber 14. It has ports 35 and86 extending through f u it and eachot' theseportsis a'daptedpto be brought into register with the port 13 lead a cylinder at each end of the rock lever, pistons in each cylinder, and connections between the pistons and the rock lever.

3. In a fluid actuated engine, the combination with the valve operating parts comprising a cylinder, a piston, engine valve, crank and crank shaft, connections between the crank and piston, an eccentric, and connections between the eccentric and engine valve, of a fluid actuated mechanism mounted on the shaft controlling the position of the eccentric comprising a rock lever swinging the eccentric to reverse the same; and a piston and cylinder moans operating the rock lever through fluid pressure in both directions, and devices comprising ways in the engine shaft conveying pressure fluid to the means.

4:. I11 a fluid actuated engine, the combination with the valve operating parts comprising a cylinder, a piston, engine valve, crank and crank shaft, connections between the crank and piston, an eccentric, and con nections between the eccentric and engine valve, of a fluid actuated mechanism mounted on the shaft controlling the position of the eccentric comprising fluid pressure means throwing the eccentric under fluid pressure in. both directions and holding the same under fluid pressure in forward and reverse positions during the power effort of the engine, said meanscomprising a rock lever, a cylinder at each end of the rock lever, pistons in each cylinder, and connections between the pistons and the rock lever; and devices comprising ways in the shaft conveying pressure fluid to said cylinders.

5. In a fluid actuated engine, the combination with a cylinder, :1 piston, an engine valve, a crank, a shaft driven by the crank, connections between the crank and piston, an eccentric mounted on the shaft, and connections between the eccentric and engine valve, of a fluid actuated mechanism controlling the position of the eccentric comprising fluid pressure means throwing the eccentric under fluid pressure in both directions; two control conduits leading to the pressure means; a valve mechanism con trolling the conduits; and a throttle valve actuated with the valve mechanism opening the throttle after the opening of the valve mechanism in both directions.

6. In a fluid actuated engine, the combination with a cylinder, a piston, an engine valve, a crank, a shaft driven by the crank, connections between the crank and piston, an eccentric mounted on the shaft, and connections between the eccentric and engine valve, of a fluid actuated mechanism controlling the position of the eccentric comprising fluid pressure means throwing the eccentric under fluid pressure in both directions; two control conduits leadingto the pressure means; a valve mechanism I concomprising a valve opening one conduit by a movement in one direction andthe other conduit by a movement in the opposite di-' valve, of a fluid actuated mechanism con-' trolling the position of the eccentric comprising fluid pressure means throwing the eccentric under fluid pressure in both directions two conduits leading from the means; a controlling valve mechanism having a controlling valve seat to which the conduits are ported and a port leading to the engine; and a sliding throttle valve having ports adapted to open said conduits alternately andto open the port to the engine with the opening of either conduit, the opening of the port to the engine following the open ing of a port to a conduit.

8. In a fluid actuated engine, the combination with a cylinder, a piston, an engine valve, a crank, a shaft driven by the crank,

connections between the crank and piston,

an eccentric mounted on the shaft, and connections between the eccentric and engine Valve, of a fluid actuated mechanism cons trolling the position of the eccentric comprising fluid pressure means throwing the eccentric under fluid pressure in both directions; two conduits leading from the means; a controlling valve mechanism having a controlling valve seat to which the conduits are ported and a port leading to the engine; and a sliding throttle valve having ports adapted to open said conduits alternately and to open the port to the engine following the opening of either conduit, said valve having means exhausting one of the conduits as the other conduit is opened.

In testimony whereof I have hereunto set my hand.

CLARENCE B. WESTON. I

trolling the conduits, said valve mechanism

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