US 1884008 A
Description (OCR text may contain errors)
Oct. 25, 1932. LQCKHART 1,884,608
Filed Dec. 5, 1930 4 Sheets-Sheet l In veninr A/OZQTZZ w. ga ziarz wddaw A tlomey Oct. 25, 1932. H. M. LOCKHART 1,884,008
Filed Dec. 5, 1930 4 Sheets-Sheet 2 A m \a Oct. 25, 1932. H, ocg 1,884,008
Filed Dec. 5, 1930 4 Sheets-Sheet s Inventor 623w? JOCZZQTZ A tlomey Oct. 25, 1932. M, LOCKHART 1,884,008
Filed Dec. 5, 1930 4 Sheeis-Sheet 4 Inventor A homey l atentecl Oct. 25, 19321 rarer cr mes HOBART M. LOCZKHART, OF NORTH WILKESBOBO, NORTH CAROLINA PUMP Application filed December 5, 1930. Serial No. 500,388.
This invention relates to certain new and useful improvements in pumps having more particular reference to a deep well pump for supplying water from the pump to city houses and the like, and the primary ob]ect ofthe invention is to provide an improved pump head for apparatus for operating the pump.
The nature and advantages of the apparatus are apparent to those skilled in the artin 9 the light of the following explanation of the drawingswherein is shown apreferred embodiment of the invention;
A salient feature of the present invention is to provide an improved pump head which may be readily dismantled and just as readily assembled, facilitating removal of any of the working parts of the same for the purpose of repair or for any other reason.
A still further object of the invention is to provide a pump head, wherein the gearing forming part thereof is always immerged 1n a suitable lubricant, and further, wherein the head may be driven from an electric motor of one quarter horse power, and yet deliver at least two gallons of fresh water each minute.
' A further objectof the invention is to provide a pump head that is very simple in construction, consists of but few parts, and which upon the opening of spigot arranged in the waterline, the pump will be set into operation for delivering fresh water.
' Other ob3ects and advantages of the 1nven- I I I tion w ll become apparent during a study or n the following description, taken in connection partly in elevation for more clearly illustrating the automatic switch arranged in circuit with the electric motor.
Referring in detail to the drawings, it will be seen that the improved pump head comprises a gear casing 1 within which is journalled a transverse shaft 2 and opposite walls of the gear case are provided with apertures 3 providing bearings for the ends of the shaft. Splined to the shaft 2 is a relatively large gear 1 that is in mesh with a pinion 5 splined to a second transverse shaft 6, the said walls of the casing being provided with apertures 7 constituting bearings for the end of the shaft 6. Also splined on the shaft 6,'is a relatively large gear wheel 8 that is in mesh with a pinion 9 splined to a driven shaft 10, the said walls of the gear casing 1 being provided with apertures 11 constituting bearings for the ends of the driven shaft 10.
In order that the shafts 2, 6 and 10, may be readily removed from the gear case, I prefer to form the gear case into two pieces by dividing the same alongits horizontal plane, taken longitudinally of the case and near the center of the several apertures therein.
The line of division extends from one end to the other of the gear case and thus divides the same into a lower section A and an upper or cover section B. The lower sectionA at the end thereof is provided with suitably apertured flanges 13 to facilitate anchoring of the section to a suitable support.
Exteriorly of the gear case, the driven shaft 10 on one end thereof is equipped with a pulley wheel 14 over which is trained a drive belt 15, the latter being alsotrained overa relatively small pulley wheel 16 on one end of the shaft 17 of a suitable electric motor M.
Exteriorly of the gear case, on one end of shaft 2, is a crank arm 18 and a connecting rod 19 at one end is pivoted as at 20 to a crank pin extending laterally from one end of the crank arm 18. The other end of the connecting rod 19 is pivoted to a pin 21 projecting laterally from the upper end of a slide member 22 that is slidable on a guide rod 23 depending from the gear case 1. The guide rod 23 is braced with respecttothe casing 1 through the medium of a suitable brace 24.
Bolted to the lower end of the guide rod loo 23 at 25 is a stufiing box 26. The stufling box 26 is on the upper end of pump tubing 27. Operable within the pump tubing 27, and stuiling box 26 is the usual pump or sucker rod 28 that is secured to suitable means 29 to a lateral lug 3O integral with the slide 22.
hianifestly, upon operation of motor M, the rotative movement of the shaft 17 of the motor is transmitted to the driven shaft 10, rotative movement of the shaft 10 being transmitted to the shaft due through the medium of the gearing arranged within the gear case 1. The crank arm 18 rotating with the shaft 2 imparts an oscillatory movement to the connecting rod 19 thus imparting reciprocatory movement to the slide 22, the latter transmitting its'movement to the sucl ier rod or pump rod 28 for forcing water from the well upwardly through thewell' tubing 27 and stuffing box 26 to discharge from the stufling box through a lateral'outlet nipple 32 extending l'aterally'from the stufiing box.
On the outer end'of the nipple 31 is a riser 32 connected to the nipple through a suitable elbow 33 arranged within the riser 82 is a checkvalve 34 and above the check valve a T-coupling35. Leading from a branch of the T-coupling 35 is a branch pipe 36 that at its outer end is coupled through the medium of elbow 37 with a supply pipe 38 adapted to lead through any suitable water main for supplying a house or the like with water.
Onthe riser 32, above the T-coupling 35 is an air chamber 39 that has a nipple 40 rising from the top thereof. Threadedly engaged with theupper end of the nipple 40 is a valve casing 41 within which is arranged an automatic-valve structure.
The automatic switch structure arranged in the casing 41 comprises a pair ofcontacts 42. respectively anchored at one, end to a wall of the casing as at 43 suitably insulated from saidwallas at 44. The confronting ends of the fixed contact 42 are arranged in spaced relation, and are ada tedto bebridgedby a bridge member 45, t at includes a vertical stem 46 the free end'of which is suitably engaged with a diaphragm 47 anchored within the bottom of the casing as at 48. a The bridge member is normally maintained in contactwith the adjacent end of the fixed contact members 42 through the medium of a coil spring 49' impinging against saidmeinber 45. Secured to the upper end of the coil spring 49 is a plug50 threadedly engaged with the top wall of the casing 41.
The, switch structure arranged in the casing 41, as just described, in a closed condition when the electric motor M is running, said switch beingv arranged in circuit. with the electric motor. When the air pressure in the, chamber 39 exceeds a predetermined amount, the pressure consequently exertedon the diaphragm 47 will overcome theact'ion ofthe spring 49 thus moving the bridge member 45 out of engagement with the contact 42 opening the circuit to the motor M for stop-.
ping the same, resulting in a stopping of the pump.
Vvhen a spigot or the like is turned on for drawing water from the pump the air pressure is of course decreased, thus permitting the bridge member 45 under influence of the spring 49'to move downwardly to bridge the contact 42 thus closing the circuit to the motor for starting the same whereby the pump is again put in motion as is apparent.
The removal part or cover part B of gear casing l is secured to the fixed or lower part A ofthe gear casing through the medium of suitable bolts 51.
The slide 22'adjacent its upper end isalso provided with a suitable grease cup 52' for maintaining the slide and the guide rods 33 therefor in a well lubricated condition.
From the foregoing then it will be seen that I have provided a working head of this character, which will as before stated'permit the removal of certain of the working parts, without requiring a removal of other of the working parts, and that the movable parts of the working head especially the gearing, and the slide 22 are maintained at alltimes in a well lubricated condition, it being under stood that the casing 1 is adapted to contain a suitable lubricant, and that further the working head is capable of operation free of such noise incident tothe operation of such ump.
Even though I have herein shown and described the preferred embodiment of the invention it is to be understood that the-same is susceptible to changes, modifications and improvements coining within the scope of the appended claim.
Having thus described my invention, what I claim as new is:
In combination with a pump and transmission mechanisinincluding a casing, a vertically arranged rodihaving its upper end connected" with the casing and its lower end with the pump, a brace connected withthe casing at that side which is o zsite to the side to which the rod is connected, said brace extending diagonally and having its lower endconnected with the lower end of therod, a cross head slidably arranged on the rod and having a projection atits upper endiand a projection at its lower enchmeans for connecting the piston rod of the pump to the lower projectioma pitman connected tothe upper projection and to the transmission means.
In testimony whereof I aflix my signature.
HOBART M. LOCKHART.