US2568646A - Pump - Google Patents

Description

G. N. LITTLE Sept. 18, 1951 PUMP Filed Jan. 22, 1948 Gemye IKLiZZ'Ze, a? 1 Patented Sept. 18, 1951 PUMP George N. Little, Kansas City, Mo., assignor of one-fourth to Walter S. Pyle, Kansas City, onefourth to Charles 0. Spangler, and one-fourth to J. Leo Spengler, both of Independence, Mo.

Application January 22, 1948, Serial No. 3,757

2 Claims. (Cl. 103103) My invention relates to pumps for circulating water through the cooling systems of internal combustion engines, and one object of the invention is the provision of a pump of this character in which the drive shaft of the pump is mounted independently of the driving pulley and the cooling fan in order to be relieved of all weight excepting the weight of the impeller.

Another object of the invention is the provision of independent oiling means for the respective drive shaft, and pulley bearings so that in the event leakage of water occurs around the drive shaft bearing it will be prevented from entering the pulley bearing and washing lubricant therefrom.

Further objects of the invention are the provision of a simple, inexpensive and eflicient pump in which the parts thereof can be readily assembled for use or disassembled for repairs, or replacement of parts.

In order that the invention may be fully understood reference will now be had to the accompanying drawing, in which:

Fig. l is a plan view of the pump mounted on the fragmentary showing of the front end of an internal combustion engine.

Fig. 2 is a vertical longitudinal central sectional view of the pump on line 22 of Fig. 1, partially broken away.

Fig. 3 is a front elevation of the forward portion of the pump.

Fig. 4 is a rear elevation of the pump.

Fig. 5-is a fragmentary sectional detail of the pulley and its bearing with means for conducting a lubricant to said bearin In carrying out the invention I provide a housing 2 having a water chamber 4 in one end and a reduced tubular extension 6 at its opposite end. The chamber 4 has an inlet 8 and an outlet duct I0 communicating with the water cooling system of the engine A, in the conventional manner. The housing 2 is provided with a peripheral flange l2 having ears It with apertures, through which bolts I8 extend to removably secure the pump housing to the front end of the engine.

An impeller is operably mounted radially inwardly from flange H to draw in water through the inlet 8, force it from the chamber through the outlet duct I0, and throughout the cooling system of the engine in the conventional manner. The impeller 20 is fixedly mounted upon the rear end of a drive shaft 22 and has a closed rear side 23 which prevents water from returning to the chamber 4 after being forced into the outlet l0.

ing 24 arranged axially in the housing, as disclosed by Fig. 2. The bushing 24 is provided near its rear end with transverse apertures 26 through which a lubricant may pass between the contacting surfaces of the drive shaft 22 and the bushing.

A duct 28 extends radially through a portion of the rear wall 30 of the water chamber 4 for the purpose of conducting lubricant, injected through a conventional fitting B, to the apertures 23 of the bushing 24. The lubricant is retained between the drive shaft 22 and the bushing 24 by packing 32 and 34 placed at the front and rear ends, respectively, of the bushing and compressed tightly around the shaft and the ends of the bushing by a packing-nut 36, threaded into the forward end of the tubular extension 6 at the front end of the housing, The head of the packingnut 36 has a number of radial holes 31 into any one of which a pin may be inserted for adjustment of the nut. Pressure of the packing against the ends of the bushing is suflicient to prevent rotation of the latter with the drive shaft 22.

A pulley 38, preferably of the V-sheave type, is provided for driving the shaft 22. Said pulley is mounted independently of the drive shaft upon a two-row ball bearing 40 having a stationary inner ball race 42 pressed friction tight upon the tubular extension 6, and an outer ball race 44 pressed friction tight into the hub of the pulley 38 to rotate therewith. The bearing 43 is further secured upon the tubular extension 8 by a split washer 46 and a retaining outer ball race 44, arranged at opposite sides of bearing. The outer ball race 44 is secured in place by the heads 48 of screws 50 threaded into one side of the pulley 38. The washer 46 is mounted in a peripheral groove 52 in the forward portion of the tubular extension 6. A felt washer 54 is placed in a recess at one side of the bearing 43 to retain a lubricant therein received through a fitting C, of conventional type, threaded into one side of the pulley 38.

The front side of the pulley 3B is provided with a plurality of equally spaced lugs 58, to the front ends of which a plate is secured by screws 62. One pair of diametrically opposed lugs 58 are provided with confronting notches 66 to receive the ends of a pin 68 extending transversely through an aperture in the forward portion of the shaft 22 to drive the latter when the pulley is in operation. The plate to is provided at its front side with a forwardly projecting annular member Ill, upon which the hub 12 of a conventional fan D is mounted and secured in place by The shaft 22 extends forwardly through a bush- 5 the screws 62.

From the foregoing description taken in connection with the accompanying drawing, it is apparent that the life of the drive shaft 22 and the bushing 24 will be greatly prolonged by relieving them of the weight of the pulley 38 and the strain imposed thereon by the lateral pull of the pulley belt (not shown). It is also apparent that the pump may be readily assembled by forcing the ball bearing 40 into the pulley 3i and then mounting said ball bearing upon the extension 6 of the housing 2, after which the drive shaft 22 may be placed through the bushing 24, the packing 32 and 34, and the packing nut I. The pin 68 may then be placed transversely through the opening in the drive shaft 22 and secured at its ends in the notches 66 for the pur-- pose of transmitting motion from the pulley ll to the drive shaft 22.

While I have shown the preferred form of my pump it is to be understood that variations and modifications thereof may be made which fall within the scope of the invention as claimed.

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

1. A pump comprising a housing adapted to be secured at one end to an internal combustion engine and provided with a chamber having an inlet and an outlet adapted to communicate with the water cooling system of the engine, an impeller located in said chamber and adapted to circulate the water, a drive shaft extending longitudinally through the housing and upon which the impeller is fixed, a pulley mounted upon the housing and independently of the-drive shaft, a plurality of lugs projecting forwardly from one side of the pulley and apair of which have confronting notches in their front ends, and a pin extending transversely through the drive shaft and having its ends removably seated in the respective notches.

2. In a pump, an integral housing having a chamber with inlet and outlet openings, an impeller located in the chamber, a drive shaft extending axially through the housing and upon which the impeller is fixed, a bearing arranged exteriorly upon the housing, a pulley mounted upon the bearing, spaced means projecting from one side of the pulley, and a pin extending through the drive shaft and having its end portions confined in recesses formed in said spaced means.

GEORGE N. LITTLE.

REFERENCES CITED The following references. are of record in the file of this patent: V

UNITED STATES PATENTS Name Date Madress et a1 Mar. 13, 1934 Walker May 29, 1934 Visser Aug. 14, 1934 Sprinl: Jan. 21, 1936 Number

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