US753771A - Driving mechanism for pumps. - Google Patents

Description

No. 753,771. PATENTED MAR. 1, 1904.

J. G. WHITMER. DRIVING MECHANISM FOR PUMPS.

APPLICATION FILED SEPT. 15. 1903.

N0 MODEL.

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Patented March 1, 1904.

PATENT OFFICE.

JOHN C. VVHITMER, OF LORDSBURG, CALIFORNIA.

-DRIVING MECHANISM FOR PUMPS.

SPECIFICATION formingpart of Letters Patent N0. 753,771, dated March 1, 1904. 7

Application filed September 15, 1903. Serial No. 178,326. (No model.)

To alZ whom it may concern:

Be it known that I, JOHN C. WHITMER, a citizen of the United States, residing at Lordsburg, in the county of Los Angeles, State of California, have invented new and useful Improvements in Driving Mechanism for Pumps, of which the following is a specification.

My invention relates to driving mechanism for a double-acting pump; and the object thereof is to provide means for operating the same to produce a continuous flow of water with a minimum expenditure of power. I accomplish this object by the mechanism described herein, and illustrated in the accompanying drawings, in which Figure 1 is a side elevation of my driving mechanism, and Fig. 2 is a. plan of the same.

In the drawings, A is the frame, on which are pivotally mounted the slotted levers B, which carry on their short end the toothedsectors C, which mesh with rack-bars D, to which the pump-rods (not shown) are connected. In the frame is mounted the driving-shaft E, on one end of which is pulley F for the reception of a belt, (not shown,) by means of which power is applied to the driving-shaft. Any other -means of applyingpower may be adopted.

On the driving-shaft are rigidly mounted pinions G, which mesh with gear wheels H, which are mounted in'bearings secured to the frame. I have shown these gear-wheels mounted on shafts I, which have two bearings J secured to the frame; but only one bearingis necessary. These gear-wheels are pro.- vided with crank-pins K, which carry slideblocks L, that move in slots B of the slotted levers. These crank-pins are arranged on opposite sides of the shafts on which the gears power is applied to drive the levers the strain of lifting the rack-bars commences and is completed during the time that the slide-block is going outwardly or away from the fulcrum and back from the point at which the crankpin reaches a line which runs tangent from the fulcrum to the pathof revolution of the crankpin. The downward movement is effected during the remainder of the revolution of the crank-pin. As the downward movement of the rack-bar is accomplished in less time than the upward movement at every stroke for a short period of time, both rackbars move upward together, thereby always insuring a constant motion in the upward flow of the water. At the back of the rack-bars are placed roller-bearings M to reduce the frictional contact of the rack-bars in their movement through the guide N, fixed to the frame. 1

It will be observed that when the crank-pin is at and very close to the point at which a line projected from the fulcrum is tangent to its line of revolution the rack-bar has but very slight if any movement, 7 which gives the valves of the pump ample time to seat themselves before the upward stroke commences,

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a driving mechanism, a frame; two levers pivoted intermediate their ends in said frame; each of said levers having at one end a toothed sector, and a longitudinal slot in the other end; rack-bars meshing with said sectors and adapted to be moved thereby; gears mounted in said frame at a point crossed by the oscillation of the slotted end of said levers; crank-pins affixed to said gears at points on the opposite sides of the shafts on which the gears are mounted, said crank-pins passing into the slots in said levers; means to operate said gears.

2. In a pumping mechanism a frame; two levers pivotally mounted in said frame intermediate their ends so that the distance from the pivot to one end shall be greater, than the distance to the other end, said levers being in parallel planes and each having on the shorter end a. tooth-sector and in the longer end a lonpoint crossed by the center of the slots as the levers move in said frame; slide-blocks in said slots; crank-pins aflixed to said gears at points I on the opposite sides of the axles on which the gears are mounted, said crank-pins being operatively connected to said slide blocks;

means to operate said gears.

In witness that I claim the foregoing I have hereunto subscribed my name this 8th day of 5 September, 1903.

. JOHN C. WHITMER. Witnesses:

L. C.- MEREDITH, W. S. CARSON.

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