Патент USA US2409963код для вставки
Oct» 22, 1945» s. D. SHEARMAN 2,409,962 PUMP FOR LUBRICANTS AND THE LIKE ` Filed May 23, 1945 n lm j . . 0 In mw ` U2 Patented Oct. 22, 1946 2,409,962 Spicer D. Shearman, Èryan, Ohio, assigner to The . ArolEquipipept Corporation, Bryan, Ohio, a cor poration vof Ohio Application Mayes, 1945, serialfNo; 595,419 e clanes. (01.'1403-55 2 . \ My present ‘invention `relates Vto a Apump Vfor lubricant andthe like having ya novel primer pis bolts 34 an'dhas a tubular'liousing 36 depending ton and ¿pump plunger arrangement-,ï tube 38 is also provide'dwhi‘ch serves as ‘a primer therefrom into ‘the ’container In. Anjexte?sion cylinder and it is `coupled to >the tube 36 by va -' Óne *obiefct VVci" 'the inventionjis `to provide a 4‘simple structure having means to both >prime a nipple 40. tlie‘pressure >pump by means of a "Singh recipro _jcatiñgmóticn öfja. pump' ’ > ' wherein prììi’íër piston >is 'reciprocablè a 'cyl - - by the lower end of a high pressure ‘cylinder ‘44 which has ‘a head 48. The head ‘46 contains an ‘ Another .object is to "provide an "arrangement » I Within the primer cylinder 38 awp'iston ’42 iof cup leather type is reciprocable. Itis 'supported pressure pump and 'at ‘the‘same time operate 10 outlet valve seat 48 against which ‘a check valve inder ¿and `in* the cylinder `a pump plunger is 'ar 5l)v of ball -type is adapted‘tò normally seat. The head 44 is connected at Eits upper end cooperateA therewith to pump lubricant at high pressure Vfrom the pump structure and to create 1. with a tubular rod 52 which is threaded into 'the `lower vend of a piston rod 54. The îpiston rod54 has ‘a bore 56> part way into `it `fr’or'n ‘the lower a vacuum on the return stroke vwhich quickly end, and this tbore communicates by meanïs‘öf a ranged, the primer piston having ‘a cylinder to sucks the lubricant brought to the `high pressure :pump by the primer `piston `into the. cylinder of the 4high pressure pump when it îleaves the plunger. . ~ I " _1 Another object is to provide an arrangementjof this character in which the piston rod Ais hollow so that the lubricant under high pressuremay pass up through it to the discharge port of the pump. ' ' - A further object is to' provide a simple arrange ment which involves few Íparts and but little as sembly labor rfor fabricating a pump structure including a means to prime the pump. ' f With these -and other objects Vin view, my in vention consists in the construction, arrange ment and `combination of the various ‘parts `of my y'device whereby the objects'contemplated ’are attained, .as hereinafter l"more fully set 4forth, -side loutlet 58 with a cavity 68 in the vhead 32.. The cavity 68 communicates with an outlet port 462 which extendsto the point of use/'such a's‘the fro usual grease hose ending in fa discharge. nozzle, which may or may not be Vthe valved type, as desired. A packing ïgland 64 surrounds the piston Vrod 54 for retaining packing l66 in the lower end of 265 the head 32 to avoid leakage between the head and the piston rod. The tube 36 has' breather openings 68, the purpose of which will herein after appear. _ - ` - I For` reciprocatmg‘the piston rod 54 I», provide to a handlever‘ï'lß pivb’ted‘tothe ‘head`3'2 by means of a link 12. The lever 'l0 'carries a pivot pin 'I4 with which the upper end of the rod 54 is con nected after extending out of the head through a packing nut 16. ' The high :pressure cylinder 44 is adapted to coact at times with a »high pressure plunger 'I8 accompanying drawing, wherein: ‘ . ` , 1 which has a shouldered down 1portion'8ll fsup Fig.` l is Ya vertical, sectional View `through ya vported in a hub-82. The hub 82 is‘connected by pump for lubricant and the 'like'emb'cdying m'y spokes 84 with `an annular member 86. The invention, and-showing the `primer piston inlow member 86 is connected with the lower end ofzthe ered position; ~ . 1 " "40 >plunger cylinder 38 by means of a connector -ring Fig. 2 is enlarged sectional View of the 88 having its upper and lower ends flanged over pump mechanism per se showing the primer pis as shown in Fig. 2. The shouldered down por ton in elevated position; and tion 80 is retained in the vhub 82 by a nut 90. Fig. 3 is a bottom plan view of Fig. 2. Freely slidable on- the tubular housing 36 and On the accompanying drawing I have used the 45 pointed out -in my claims and illustrated in -the in the cylinder 38 is a hub 92 and a cone-shaped reference numeral I0 to indicate a tubular con follower plate 94. The plate 94 is adapted to tainer having a bottom I2. A lid lli is provided follow the lubricant 96 in the container II) and for the container IU and it may be secured to has a peripheral ilange 98 extending upwardly. the container as by means of clamp screws I6 and I8 coacting with b-rackets 20 and 22 on the tank 50 The flange 98 occupies a position close enough to the wall of the container I0 toclean the lub-ri and brackets 24 and 26 on the lid. The clamp cant from the wall with the exception of a thin screw I5 has a wing nut 28 and the clamp screw film. I8 has a sleeve nut 38 threaded thereon, as illus Practical operation. trated. A pump head 32 is mounted on the lid I4 as by 55 In the operation of my pump structure, the 3 4 cylinder 44 and the plunger 18 together constitute nected therewith for operating said primer pis a high pressure pump, whereas the piston 42 and the cylinder 38 constitute a primer therefor. Be ginning with the lower end of the stroke, as in Fig. 1, it will be obvious that there is no pump ing action within the cylinder 44 when the direc tion of reciprocation is reversed and the cylinder ton and pump cylinder and for receiving the lu bricant from said check valve and discharging it to a discharge port of the pump. 2. In a pump for lubricant and the like, a primer cylinder, a primer piston movable there in, a pump cylinder carried by said primer piston, 44 is moved"Qupwardly.v :The check' valve 50‘ will a pumpiplunger carried.- by ‘ said primer cylinder, close from the position of Fig. 1 to the position of >said ipump cylinder being movable onto and olf Fig. 2 as soon as such movement is started, and 10 of said pump plunger, said primer cylinder and the plunger will accordingly produce a vacuum pump cylinder communicating freely with each within the cylinder 44. At the same time, the up Y other when the pump cylinder is oir the pump ward movement of the piston 42 draws lubricant ' plunger, and an'outlet check valve carried by said in through the ring 86 betw'een'the'y spokes 84v -f pump cylinder. thereof for charging the space within the cylinder 15 3. In> a pump of the character disclosed, a 38 surrounding the plunger '18 when the lower end of the piston 42 leaves the upper end of the plunger 18. The vacuum in the cylinder 44 will at that time draw a charge of lubricant up into the cylinder. primer cylinder', a primer piston movable therein, a stationary pump plunger, a pump cylinder si multaneously movable with said primer piston and being movable onto and off of said pump 20 plunger, said primer cylinder and pump cylinder ` L» Upon the down stroke this charge of lubricant willbe trapped in the cylinder 44 by the plunger communicating freely with each other when the pump cylinder-is offy the pump plunger, and a tu 18, .and will be displaced therefrom through the bular piston rod connected with said pump-,cylin check valve 50 andinto the tubular piston rod 52. der for operating it and said primer piston and The lubricant passing through the check valve 25 for receiving the lubricant therefrom and dis 5l) will displace any lubricant above it upwardly charging it from the pump. . j Y. _ , ' through the. bore 56 of the piston rod- .54, then 4.,In a pump structure, a cylinder, a primer outwardly through its port 58 into the cavity 60, piston reciprocable therein,"a plunger'ca'rried by and from there through the discharge opening said cylinder, said piston havinga- k,cylinder co' 62 into the lubricant hose. , 30 operable‘ with said plunger to pump liiuid,v a >pis From the foregoing descriptionV it will be ob ton rod 'for reciprocating said primer; piston and vious-that I have‘provided an element 44-42 said' pump cylinder, to provide Vsuction and dis which servesboth as a high pressure cylinder and charge-strokes, said cylinders being in free coni munication with each other at the end of a suc a primer piston. When Athis element is recipro -cated, it primes the high pressure pump and by tion stroke, and an outlet check valve carried by ‘ cooperation of yits cylinder with the plunger '18, the lubricant is dispensed at a pressure depend said pump cylinder. ’ 5. In'a vpump structure, a cylinder, a piston ing upon _thearea of the plunger 18 in relation reciprocable therein, a plunger carried by said to the pressure on the handle’lû. The high pres cylinder, said piston being hollow to receive said sure pump is effectively and efficiently primed 40 plunger and cooperate therewith to pump iiuid, each time the cylinder 44 leaves the upper endof apiston rod for reciprocating said piston and said the plunger 18, thus eliminating all voids inthe pump'cylinder, to provide suction and discharge stream of lubricant being dispensed. strokes, said cylinder and the hollow portion of Some changes may be made in the construc said piston being in free communication with tion'and arrangement of the parts of my device 45 each other at the end of a suction stroke, and without departing from the real spirit and pur an outlet check valve carried by said pump cylin pose of my invention, and it is my intention to der, said piston rodibeing hollow and the outlet cover .by my claims any modified forms of struc side of said check vvalve communicating there ture or use of> mechanical equivalents which may be reasonably included within their scope. I claim as my invention: with. 50 . . " , 6. In a’pump structure, a cylinder, a primer Y piston reciprocable therein, a spider at the lower end of said cylinder, a plunger carried by said primer cylinder, a primer piston movable therein, spider, said piston having a bore cooperable with a pump cylinder carried by said primer piston, said plunger to'pump iiuid, a piston rod for recip a pump plunger carried by said primer cylinder, 55 rocating said primer piston, to provide Ysuction said pump cylinder being movable onto and oiT and discharge strokes, said cylinder and said bore 1. In a pump for lubricant and the like, a of said pump plunger, said primercylinder'and pump cylinder communicating freelyzwith each other when 4the pump cylinder is 4off the pump plunger, an outlet check valve carried by said 60 pump cylinder, and a tubular lpiston `rod con beingV in free communication with each other at the end of a suction stroke, andan outlet check valve carried by said primer piston andV com municating with said bore. ‘ ' ’r ,I „ SPICER D. SHEARMAN.