US1359644A - Power-jack - Google Patents

Description

G. R. WRIGHT.

POWER JACK.

APPLICATION FILED DEC. 9. 19m.

Patented Nov.

2 SHEETS-SHEET l.

UNITED STATES PATENT OFFICE.

GEORGE R. WRIGHT, OF FORT WORTH, TEXAS.

POWER-JACK.

Application filed December 9, 1918. Serial No. 265.938.

a pump operating means, in the same manner as the efficiency of any drive mechanism is increased by the use of a fiy wheel.

A further object is to provide weighted pendulums so connected to the driven elements as to act directly upon them during the operation of the mechanism, the use of .described and pointed being understood that the pendulums permitting a considerable reduction in the power required to operate a pump.

With the foregoing and other objects in View the invention consists of certain novel details of construction and combinations of parts which will be hereinafter more fully out in the claims, it various changes may be made in the construction and arrangement of the parts without departing from the spirit or sacrificing any of the advantages of the invention as set forth in the ap ended claims.

n the accompanying drawings the preferred form of the invention has been shown.

In said drawings- Figure 1 is a front elevation of the jack.

Fig. 2 is a plan view thereof.

Fig. 3 is a ,view showing in full and dotted lines two positions to which the parts will move during the operation of the mechanism.

Referring to the figures by characters of reference, 1 designates a stand or supporting frame having a bearing 2 for a" centrally supported walking rod 4 is pivotally connected to one arm of the walking beam and may be driven by any suitable mechanism so as to move the walking beam at a predetermined number of strokes per minute. V

Pivotally connected to the ends of the Specification of Letters Patent.

beam 3. An operating Patented Nov; 23, 1920.

walking beam arependulums 5 each includmg a weight 6 and journaled within the walking beam or upon one side thereof at points 7 equidistant from the bearing of the walking beam, areo positely disposed bell crank levers 8 of tlie same size and the lower arms of which are extended toward each other. The free ends of these lowerarms are pivotally connected as at '9 to the upper ends of the pump rods 10.

The upper ends of the upper arms of the levers 8 arepivotally connected, as at 11, to a link 12. They are also pivotally attached to connecting rods 13 which extend downwardly past the walking beam and are pivotally connected, at 14, to the pendulums.

VVhenthe walking beam is oscillated by the application of power thereto through the reciprocating rod 4, the pump rods 10 will be given a reciprocating movement as ordinarily. As the oscillation of the beam continues, however, the pendulums will begin to swing until the relative movement thereof will be transmitted, through the rods 13 and levers 8 to the rods, thereby to increase the movement of said rods 10. In other words, when the walking beam travels from one limit of its movement, indicated by dotted lines in Fig. 3, the pendulums will maintain their positions relative to the beam and the rods 10 will be shifted as ordinarily until the beam reaches the other limit of its movement where it is brought to an abrupt stop. This will cause the two pendulums to be impelled to the positions shown by full lines in Fig. 3 with the result that the bell crank levers will impart further movement to the pump rods in the direction in which they had been moving. At the same time the pendulum on the lowermost arm of the beam 3 having been swung inwardly toward the center of the beam and the otherpendulum having been swung outwardly, the upper arm will overbalance the lower arm so that the power required to return the beam to its other extreme position will be reduced.

What is claimed is '1. The combination with a walking beam and means for oscillating the same, of a pendulum hung from each end of the beam, oppositely disposed levers movable with the beam and equidistant from the bearing thereof, a link connection between the levers, I

crank levers upon tlre Walking beam, 9, hnk connectmg the upper arms of sand levers, and rods connecting the upper arms 10 of said levers to the pendulums at points below the beam, and pump rods connected to the lower arms of the respective levers.

In testimony that I claim the foregoing as my own, I have hereto affixed my slgnature in the presence of two Witnesses.

GED. R. WRIGHT.

Witnessesr FRED. D. HOFFMAN, D. W. MARTIN.

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