US1081458A - Automatic reversible motor. - Google Patents

Description

J. MOKENNEY.

AUTOMATIC REVERSIBLE MOTOR.

Patented Dec. 16, 1913.

APPLICATION FILED JULYV', 1913.

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JOHN MCKENNEY, OF ANACONDA, MONTANA.

AUTOMATIC REVERSIBLE MOTOR.

Specification of Letters Patent. A

Patented Dec. Mi, 1943.

Application led July 7, 1913. Serial` No. 777,699.

To @ZZ 'whom t may concern:

. Be it known that I, JOHN MCKENNEY, of Anaconda, in the county of Deerlodge and State of Montana, have invented certain new and useful Improvements in Automatic Reversible Motors; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had Yto the accompanying drawings, which form part of this specification.

This invention is an improvement'in rotary engines and motors and has particular reference to means for automatically reversing the engine after a predetermined number of revo-lutions of the main shaft thereof in either direction. The invention provides a novel valve controlling mechanism by which the direction of rotation of the main engine shaft is controlled, and an engine equipped therewith is especially adaptable for driving reciprocating parts of machines; such as planer beds, and `other devices. I also provide means. whereby the valve controlling mechanism can be rendered inactive and allow the engine to run continuously in either direction desired by the operator.

In the accompanying drawings I have illustrated apractical form of motor and valve ,reversing mechanism embodying the invention andA will describe same with reference thereto.

In said drawingsFigure l is a sectional elevation of a motor showing the working chambers, pistons and ports, and valve chamber. Fig. 2 is an exterior view sho-wing the valve mechanism. Fio 3 is a similar view showing the parts 4in different position.

Fig. 4 is a detail edge view of F ig. 2.

The engine casing 1 may be of any suitable form and contains a working chamber la within which is eccentrically 4located a rotary piston 2 which is mounted on a shaft 2b. The piston is provided with four' equidistant radial slots 2 in which slots are slidably mounted abutments 3; and the diametrically opposite abutments 3 are connected by rods 3a which extend di ametrically through the piston, the connected abutments being so formed that the abutments will move in and out according to the curvature of the outer wall of the chamber l and will always maintain practically a fixed relation to each other. A

At the point where the piston 2 contacts with the outer wall of thechamber 1a I preferably locate a packing 3c which will prevent short circuiting of fluid from one side of this packing to the other.

Communicating with the chamber la at opposite sides of the packing 3C are ports 4a, 4b which also communicate with a valve chamber 4, in which chamber is mounted a slidable valve 5 whichA is adapted to establish communication between either ports 4a or 4b and the main outlet port 4c, according to the position of the. valve 5. When valve 5 establishes communication between ports 4a, (or 4%) and port 4c it opens communication between the other ports 4", (or 43,) and thev chamber 4. Fluid, such as steam, compressed air or water under pressure, is admittedginto the chamber 4 and will flow for example through port 4b into chamber la and engage abutments 3 t-herein and force piston 2 to rotate through cylinder to the left until iiuid can escape through port 4fL to outlet 4. If the valve be shifted to the right fluid will pass from chamber 4 through port. 4a to the chamber la and port 4b and then to the outlet 4c and the piston will rotate to the left,

The valve 5 as shown is provided with a rack 5a meshing with a segment 6a on a shaft 6 which extends outside the valve chamber and is pro-vided with operating arm 6"; to this arm 6b may be-connectcd a stud 6" to `which is pivotally connected the upper end of an actuating spring 9 hereinafter referred to. The arm 6b may also have a stud 6d on its inner side which is adapted to engage with a catch 7d on the lever 7 when the arm is swung to the left, or with catch Ze when the arm is swung to the right. The lever 7 is pivoted to the frame as at 7a and is provided with 'a -cam portion ,7c adapted to be alternately engagedby tripping pins 8il on a gear 8 as hereinafter explained, and cause lever 7 to release the pin 6d.

The gear 8 is rotatably mounted on a stud 8c attached to the side ofthe frame and it meshes with apinion 10 rotatably mounted on a"stud l()a attached to the frame, and this pinion 10 is fast t-o a gear l0b also rotatably mounted on stud 10a; and gear 10b meshes with a pinion 2e on the shaft 2b.

To the projecting end of the stud 10a may be ixedly attached the lower end of the spring 9, which is preferably a leaf sprin and its upper end is engaged with the stu 6c on the arm 6b. The studs 8a are detachably attached to the gear 8 in any suitable .mannen To the gear 8 is attached a stud 8b \to each revolution of the gear 8, for example say 10), as the gear 8 rotates the stud 8* engages the spring 9 and begins to deflect v it to the right and continues to deflect. it

' until pin 8a comes into engagement with and raises lever 7 sufficiently to cause catch 7d to release the stud 6d; as soon as the stud is disengaged spring 9 (which is then flexed) immediately swings arm fil to the right and brings the stud 6d into engagement with catch 7eon lever '7 Thismovement of the arm oscillates shaft 6 and through segment 6a slidesthe valve 5 to the right, cutting 0E communication between Vthe chamber 4 and port 4b and establishing communication between said chamber andv port 4a; and between port 4b and the discharge port 4. This produces a reversal of-movement ofthe main piston;` and this reverse movement continues vuntil in the'reverse rotation of gear 8 the other v,stud 8"l engages spring 9 and moves itto the left, the fleXure of the spring increasing until pin 8a engages cam 7c and causescat'ch 7d to release pin 6d, whereupon spring 9 throws the arm 6* back to the left, thereby shifting the valveto its first position and causing the piston to turn in .the opposite direction. By this means the valve is automatically shifted and the shift of the valve is effected quickly. The number of rotations of the main piston in the intervals between each shift lof the valve is determinable by proportioning the gears, and by the relative position of pin 8a. If it is desired to have the engine run for any length of time in one direction only, the stud 8b can be removed andthe valve will then remain in either position to which it is shiftedby the operator.

What I claim is:

1. In combination, an engine, and a valve adapted to control the engine; with, a rock shaft and connections for operating the valve, a lever on said rock shaft, a spring connected with said lever adapted to throw it in either position, a rotary member adapted to engage the spring and flex same until it causes the shift of the valve; gearing for actuating said member,

a catch for holding the valve locked in either position, and means on saidro-tary member for disengaging the catch.

2. In combination, an engine, and a valve for controlling the engine; with y, a rock shaft and connect-ions' for actuating said valve, and a lever on said rock shaft; with a rotary member beside said lever, gearing for operating said rotary member from the main engine shaft, a spring beside said member connectedwith said lever, and a stud on said member adapted to engage and flex said spring until the latter throws the lever and shifts the valve.

3. In combination, an engine, a valve for controlling the inlet of fluid to the engine, a rock'shaft and connections for actuating said valve, and 'a lever on said rock shaft; with a rotary member beside said lever, gearin for operating said rotary member from t e main engine shaft, a spring beside said member connected with said lever, a

stud on said member adapted to engage and v flex said spring until the latter throws the lever and shifts ythe valve; a catch for` locking the lever to hold the valve in either eX- treme position, and means on saidrotary member adapted to'release the catch to permit the spring to shift the lever.

4. In combination with an engine, and a valve adapted to control the inlet of fluid to the engine; arock-shaftand connections for operating the valve; a lever on said rock-shaft, a device connected with saidlever and adapted to throw said lever`in either position, a gear adjacent said device, gearing for actuating said gear, and a stud on said ear adapted to engage said device alternate y on opposite sides and'cause it to shift ythe valve.

5. In combination with an' engine, a valve chamber, and a valve in said chamber,.a rock-shaft and connections for operating the valve, a lever onsaid rock-shaft, a -flatspring engaging said lever and adapted to throw it in either position, and a rotary member adjacent said means adapted to engage said 'spring alternately on opposite sides to cause it to shift the valve, and gearing for actuating` saidmember, substantially as described.

6. In combination, an engine, and a valve adaptedy to control the inlet and outlet of fluid to the engine; a rock-shaft and connections for operatingthe valve, and a lever on said rock-shaft; with a device adapted to throw said lever in either position, a rotary member adapted to engage said device alternately on opposite sides and cause it to shift the valve; a catch for holding the valve i main valve. arock-shaft and connections for operating the valve, shaft, a spring connected with said lever adapted to throw said lever in either position, a rotary member adapted to engage the springalternatelyon opposite sides and eX same until it causes a snap shift of the Ealve, and gearing for actuating said memer. i

a lever on said rook-y ln testimony that l claim the foregoing as my own, l -afX my signature in presence of tWo Witnesses.

JHN MCKENNEY.

Witnesses:

lIRENE SUGRUE,

JOHN W. JAMES.

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