US706489A - Motor. - Google Patents

Description

Patented Aug. 5, I902. W. EVANS.

I 0T0 R.

(Application filed. Jul. 8, 1902.)

(No Model.)

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UNITED STATES PATENT OFFICE.

IVILLIAM EVANS, OF MANCHESTER, ENGLAND, ASSIGNOR OF TWO-THIRDS TO WILLIAM THOMAS HILL, OF WITIIINGTON, LANCASTER COUNTY, ENG- LAND, AND RONALD GALE, OF WOKING, SURREY COUNTY, ENGLAND.

MOTOR.

SPECIFICATION forming part of Letters Patent No. 706,489, dated August 5, 1902..

Application filed January 8,1902. Serial No. 88,882. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM EVANS, engi neer, a subject of the King of Great Britain and Ireland, and a resident of 21 Birnam street, Seedley, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Motors, (for which I have made application in Great Britain, No. 12,037, dated June 13, 1901,) of which the following is a specification;

This invention relates to a motor designed more especially for washing-machines. It is illustrated in the accompanying drawings, in whichp Figure 1 is an enlarged longitudinal section of the motor. Fig. 2 -is-a similar view with the parts in a diiferent position.

In Fig. 1 the piston-rod B is represented at the back end of its stroke and in Fig. 2 at the forward end. Within the cylinder Z is arranged a suitably-packed double piston, the one, m, being of larger area than the other, n, to which latter the piston-rod 13 is secured. Arranged within the piston-rod B is a spindle 0, which passes through the pistons mm and is supported at one end in a stuffing-box 0'. A double valve 19, having a slotted valve-spin dle q,through which the spindle 0 passes,is provided with two seatings r and sin the valve chest t of the motor. The other end of the valve-spindle q is provided with a piston u,-

slidable fluid-tight in a cylindero. A port 0' conducts pressure at the required times to the piston m. The valve-box t is provided with circular ports 10 w, to govern-which the spin dle 0 is formed with pistons 00 y. A pipe 1, in communication with the supply-nozzle 2, conducts nninterruptedly the water-pressure to the smaller piston n, thepressure to thelarger piston or being'intermittent. V y

The operation of the motor is as follows: At the end of its stroke, as shown in Fig. 1, the piston mhascome into contactwith the piston y and slid the spindle and'pistons into the positions'hownj The portw is then closed w being open to the exhaust 3, so that any water at the hack of the valve 10 is allowed to exhaust. It will be understood that the nozzle 2 is in communication with the water-supply of the house, and the pressure entering as shown by the arrows, Fig. 1, jambs the valve 23 on its seat 7 and passes through the port o to the piston m and also along the pipe 1 to the piston 42. As has been stated, the piston n is under constant water-pressure; but being of less area than the piston. m the superior pressure on the piston m causes the pistons to be traversedoutward into the position shown in Fig. 2, the water in the cylinder Z in front of the piston 12. being forced back along the pipe 1 to mix with the supply. The return. strokeof thepiston-rod B is efiected as follows: On nearing the completion of the outward stroke the piston 'm comes into"'contact with a tappet or adjustable nut 4: on the end of the spindle o and moves it forward until the pistons at y occupy the positions shown in Fig. 2. The port w is then open to pressure and the port w is closed. The water-pressure, as shown. by the arrows, is conducted to 'the back of the piston a, which is of superior area to the valve 19, so that the valve 10 is thrust on its seat 5, thus cutting ofi the supply to the port Q7. The pressure being thus removed from the piston m, the pressure on the piston 01 then reverses the stroke of the piston-rod B, the water in the cylinder behind the piston to exhausting, 'a's shown by the arrows, through the port 1; and via the slotted valve-spindle q to the exhaust-outlet 3, from whence it is discharged through a waste-water pipe. On the completion of the backward stroke the piston or actuates the spindle o to bring the pistons 00 yminthe positions shown in Fig. 1, when on the'pressurebeing removed from the back of the piston to the valve 19 is again thrust on its seating r and the cycle of operations is repeated. The motor is thus doubleacting, with the necessity of only one single and easily-constructed valve-gear.

I declare that what I claim is- A water-motor having two pistons of unequal area, a port in uninterrupted communication with the water supplyandconducting pressure to the piston of the smaller area, a port leading to the piston of larger area, a double valve having a slotted valve-stem and a piston of larger area than the valve, a port In Witness whereof I have hereunto set my leading to back of said piston, and a port hand in presence of two witnesses; leading to exhaust, piston-valves working in the slot of the double valve and actuated by 5 the piston of the motor to govern such ports, Witnesses:

, and an exhaust-port arranged substantially JOSHUA ENTWISLE,

as described. ALFRED YATES.

WILLIAM EVANS.

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