US706149A - Pump-spring connection. - Google Patents

Description

No. 706,l49. "Patented Au'gffi I902.

J. 0. BANE.

PUMP SPRING CUNNECTIDN.-

(Application'flled my 13, 19021 (No Model.)

attozmu UNITED STATES I PATENT OEEIGE.

1 JAMES o. BANE, OF wAsEoA, MINNESOTA.

PUMP-SPRING CONNECTION.

SPECIFICATION forming part of Letters Patent No. 706,149, dated August 5, 1902.

Application filed May 13 1902. Serial No. 107.085. (No model.)

To all whom, it ram/y concern:

Be it known that 1, JAMES O. BANE, a citizen of the United States, residingat Waseca, in the county of YVaseca and State of Minnesota, have invented a new and useful Improvement in Pump-Spring Connections; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to that class of pumps in which springs are used to balance the weight of the pump-rod, boxes, &c., and its object is to provide simple and'reliable means for securely supporting the ends of the springs in such a manner that the springs will not hop ofi from the fastenings nor become broken. I

To this end my invention consists in the construction and combination ofparts forming a pump, hereinafter more fully described, and particularly pointed out in the claim,

reference being had to the accompanying drawings, in which Figure I represents a pump according to my invention in side elevation. Fig. II is a plan view of one of the spring base-plates'and a portion of a springattached. Fig. III is an edgewise view of the same plate and portion of a spring. Figs. IV and V are plan views of the plate, showing modified forms of the spring connections. Fig. V I is an edgewise view of the modification shown in Fig. IV, and Fig. VII is an edgewise view of the modification shown in Fig. V.

Numeral 6 represents the body of" a pump provided with a bracket-top 7, to which the pump lever or handle 8 is pivoted.

9 represents the piston-rod,and 10 a pitman connecting the rod and handle.

11 is a plate located on top of the body 6 and provided with studs 12, upon each of which one end of a spring 13 is looped and through which is a hole for a retaining-pin l-L' tenings, and, secondly, the springs are likely to bebroken in service if they are held in any rigid manner at their ends. I have therefore shaped the studs 12 so that a hole may be drilled crosswise through each to receive a retaining-pin 14 at a little distance above the spring, and I-have shaped the outer face 16 of the stud as an arc of a circle whose center is at 16, near the base of its opposite side. Furthermore I shape the spring so that it will always rest on its toe under the center 16, whether the spring be in its compressed or extended condition. By this means the swinging of each arm of a spring'when at work is upon the toe asafulcrum and around the point 16as a center, the dotted line 17 showing the upper limit of its'path of'motion and the retaining-pin .14 being located just beyond this limit. The normal position of the spring is its upward limit near the line 17, and when it begins to be compressed in opera: tion it slides against the face 15 of the stud, and that face being the arc of a circle from the center 16 it permits the spring to swing either downward 'or upward without resistance, whereas if this face of the stud were in a straight line, either vertical or at any angle, it would interfere with the free movement of the spring one way or the other and have a tendency to break either the stud or spring. The pin l iis located just beyond the path of the spring, so as not to be sheared off by either the direct" action of the spring or by the kicking movement from the rebound of the spring that would result if more space were given for the spring to kick. v

The advantages of this invention are in the direction of securing permanent and reliable springs to aid in the operation of pumping. It is'to be understood that the top plate 18 is secured to the piston-rod and may be provided with the same style of studs as those above described, the plate being inverted to receive the upper ends of the springs. also to be understood that the separate pins 14 maybe substituted bya ring-pin 19, secured to the studs in any usual manner, as bypassing directly through them, as in Figs. V and VII,

or as by split eye-pins 20, as in Figs. 1V and VI. Circular studs would not keep the springs from turning sidewise out of place, but quarter-round studs, such as are shown Itis ICO

in Fig. IV, or square studs, as in Fig. V, or studs out of round horizontally in any direction would serve the purpose, so I use the words out of round in the claim to express this characteristic.

Having thus fully described my invention, what I believe to be new, and desire to secure by Letters Patent, is the following:

In a pump, a stationary body; a reciprocating piston-rod; a spring base-plate supported on the body and another spring basep late secured to the piston-rod; the said baseplates having studs projecting from their adjacent faces, each of the said studs being out

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